技术领域technical field
本实用新型涉及触摸输入装置，尤其涉及一种包括显示模块并且能够检测施加于触摸表面的触摸压力的触摸输入装置。The utility model relates to a touch input device, in particular to a touch input device comprising a display module and capable of detecting touch pressure applied to a touch surface.
背景技术Background technique
用于操作计算系统的输入装置有多种类型。例如，按键(button)、键(key)、操纵杆(joystick)及触摸屏之类的输入装置。由于触摸屏简单易操作，因此触摸屏在操作计算系统方面的利用率增大。There are many types of input devices used to operate computing systems. For example, input devices such as buttons, keys, joysticks, and touch screens. Due to the simplicity and ease of operation of touch screens, the utilization of touch screens in operating computing systems has increased.
触摸屏可以构成包括触摸感测板(touch sensor panel)的触摸输入装置的触摸表面，其中触摸感测板可以是具有触摸-感应表面(touch-sensitive surface)的透明板。这种触摸感测板附着在显示屏的前面，触摸-感应表面能够盖住显示屏中看得见的面。用户用手指等对触摸屏单纯触摸即可操作计算系统。通常，计算系统识别触摸屏上的触摸及触摸位置并解析这种触摸，从而能够相应地执行运算。The touch screen may constitute a touch surface of a touch input device including a touch sensor panel, which may be a transparent plate with a touch-sensitive surface. The touch-sensing pad is attached to the front of the display, and the touch-sensing surface covers the visible side of the display. The user can operate the computing system simply by touching the touch screen with a finger or the like. Typically, a computing system recognizes touches and locations of touches on a touchscreen and interprets such touches so that operations can be performed accordingly.
此时需要一种在不降低显示模块性能的同时，不仅能够检测触摸屏上的触摸位置，还能够检测触摸压力大小的触摸输入装置。At this time, there is a need for a touch input device that can detect not only the touch position on the touch screen but also the touch pressure without reducing the performance of the display module.
实用新型内容Utility model content
技术问题technical problem
本实用新型的目的在于提供一种不仅能够检测触摸屏上的触摸的位置，还能够检测触摸压力大小的包括显示模块的智能手机。The purpose of the utility model is to provide a smart phone including a display module that can detect not only the position of touch on the touch screen, but also the magnitude of the touch pressure.
本实用新型的另一目的在于提供一种能够在不降低显示模块的清晰度(visibility)及光透过率的同时检测触摸位置及触摸压力大小的包括显示模块的智能手机。Another object of the present invention is to provide a smart phone including a display module capable of detecting touch position and touch pressure without reducing the visibility and light transmittance of the display module.
技术方案Technical solutions
根据本实用新型实施形态的智能手机，包括：覆盖层；触摸感测板，其位于所述覆盖层的下部，包括被施加驱动信号的多个驱动电极与输出能够检测触摸位置的感测信号的多个接收电极；显示模块，其包括显示板及用于所述显示板执行显示功能的构成；压力电极，其位于所述显示模块的下部；遮蔽用基板，其位于所述压力电极的下部；隔离层，其位于所述压力电极与所述遮蔽用基板之间；以及，触摸感测电路，其根据从所述压力电极输出的电容的变化量检测触摸压力的大小，其中所述电容的变化量随所述压力电极与所述遮蔽用基板之间的距离变化。The smart phone according to the embodiment of the present utility model includes: a cover layer; a touch sensing board, which is located at the lower part of the cover layer, and includes a plurality of drive electrodes to which a drive signal is applied and a sensor signal that outputs a sensing signal capable of detecting a touch position. A plurality of receiving electrodes; a display module, which includes a display panel and a structure for the display panel to perform a display function; a pressure electrode, which is located at the lower part of the display module; a shielding substrate, which is located at the lower part of the pressure electrode; an isolation layer, which is located between the pressure electrode and the substrate for shielding; and a touch sensing circuit, which detects the magnitude of the touch pressure according to the change in capacitance output from the pressure electrode, wherein the change in capacitance The amount varies with the distance between the pressure electrode and the shielding substrate.
根据本实用新型另一实施形态的智能手机，包括：覆盖层；触摸感测板，其位于所述覆盖层的下部，包括被施加驱动信号的多个驱动电极与输出能够检测触摸位置的感测信号的多个接收电极；显示模块，其包括显示板及用于所述显示板执行显示功能的构成；压力电极，其位于所述显示模块的下部；遮蔽用基板，其位于所述压力电极的下部；隔离层，其位于所述压力电极与所述显示模块之间；以及，触摸感测电路，其根据从所述压力电极输出电容的变化量检测触摸压力的大小，其中所述电容的变化量随所述压力电极与所述显示模块之间的距离变化。A smart phone according to another embodiment of the present utility model includes: a cover layer; a touch sensor panel located at the lower part of the cover layer, including a plurality of drive electrodes to which a drive signal is applied and a sensor that outputs a touch position. A plurality of signal receiving electrodes; a display module, which includes a display panel and a structure for the display panel to perform a display function; a pressure electrode, which is located at the lower part of the display module; a shielding substrate, which is located at the bottom of the pressure electrode The lower part; an isolation layer, which is located between the pressure electrode and the display module; and a touch sensing circuit, which detects the magnitude of the touch pressure according to the change in capacitance output from the pressure electrode, wherein the change in capacitance The amount varies with the distance between the pressure electrode and the display module.
根据本实用新型又一实施形态的智能手机，包括：覆盖层；触摸传感器，其位于所述覆盖层的下部，包括被施加驱动信号的多个驱动电极与输出能够检测触摸位置的感测信号的多个接收电极；显示模块，其包括显示板及用于所述显示板执行显示功能的构成；压力电极，其位于所述显示模块的下部；基准电位层，其与所述压力电极相隔；隔离层，其位于所述压力电极与所述基准电位层之间；以及，触摸感测电路，其根据从所述压力电极输出电容的变化量检测触摸压力的大小，其中所述电容的变化量随所述压力电极与所述基准电位层之间的距离变化。According to another embodiment of the utility model, the smart phone includes: a cover layer; a touch sensor located at the lower part of the cover layer, including a plurality of drive electrodes to which a drive signal is applied and a sensor signal that outputs a sensing signal capable of detecting a touch position. A plurality of receiving electrodes; a display module, which includes a display panel and a composition for the display panel to perform a display function; a pressure electrode, which is located at the lower part of the display module; a reference potential layer, which is separated from the pressure electrode; isolation layer, which is located between the pressure electrode and the reference potential layer; and a touch sensing circuit, which detects the magnitude of the touch pressure according to the variation of the capacitance output from the pressure electrode, wherein the variation of the capacitance varies with The distance between the pressure electrode and the reference potential layer varies.
根据本实用新型又一实施形态的触摸输入装置，能够检测施加于触摸表面的触摸压力，其特征在于，包括：显示模块，其具有显示板；基板，其配置于所述显示模块的下部，并且与所述显示模块之间通过隔离层相隔；以及压力电极，其直接形成于所述显示模块，其中，从所述压力电极检测随所述压力电极与所述基板之间的电容发生变化的电子信号，所述电容随所述压力电极与所述基板之间的相对距离的变化而发生变化，根据所述电容检测所述触摸压力。According to another embodiment of the present invention, the touch input device can detect the touch pressure applied to the touch surface, and is characterized in that it includes: a display module, which has a display panel; a substrate, which is arranged at the lower part of the display module, and separated from the display module by an isolation layer; and a pressure electrode that is directly formed on the display module, wherein electrons that vary in capacitance between the pressure electrode and the substrate are detected from the pressure electrode signal, the capacitance changes with the change of the relative distance between the pressure electrode and the substrate, and the touch pressure is detected according to the capacitance.
根据本实用新型又一实施形态的触摸输入装置，能够检测施加于触摸表面的触摸压力，其特征在于，包括：显示模块，其具有显示板；基板，其配置于所述显示模块的下部，并且与所述显示模块之间通过隔离层相隔；以及压力电极，其一体形成于所述显示模块，其中，所述触摸输入装置从所述压力电极检测随所述压力电极与所述基板之间的电容发生变化的电子信号，所述电容随所述压力电极与所述基板之间的相对距离的变化而发生变化，所述触摸输入装置根据所述电容检测所述触摸压力。According to another embodiment of the present invention, the touch input device can detect the touch pressure applied to the touch surface, and is characterized in that it includes: a display module, which has a display panel; a substrate, which is arranged at the lower part of the display module, and separated from the display module by an isolation layer; and a pressure electrode, which is integrally formed in the display module, wherein the touch input device detects from the pressure electrode as the contact between the pressure electrode and the substrate An electronic signal in which the capacitance changes, the capacitance changes with the change of the relative distance between the pressure electrode and the substrate, and the touch input device detects the touch pressure according to the capacitance.
根据本实用新型又一实施形态的触摸输入装置，能够检测施加于触摸表面的触摸压力，其特征在于，包括：显示模块，其具有显示板；基板，其配置于所述显示模块的下部，并且与所述显示模块之间通过隔离层相隔；以及压力电极，其以印刷方式形成于所述显示模块，其中，所述触摸输入装置从所述压力电极检测随所述压力电极与所述基板之间的电容发生变化的电子信号，所述电容随所述压力电极与所述基板之间的相对距离的变化而发生变化，所述触摸输入装置根据所述电容检测所述触摸压力。According to another embodiment of the present invention, the touch input device can detect the touch pressure applied to the touch surface, and is characterized in that it includes: a display module, which has a display panel; a substrate, which is arranged at the lower part of the display module, and Separated from the display module by an isolation layer; and a pressure electrode, which is formed on the display module by printing, wherein the touch input device detects from the pressure electrode along with the pressure electrode and the substrate The capacitance changes with the change of the relative distance between the pressure electrode and the substrate, and the touch input device detects the touch pressure according to the capacitance.
根据本实用新型又一实施形态的触摸输入装置，能够检测施加于触摸表面的触摸压力，其特征在于，包括：显示模块，其具有显示板；基板，其配置于所述显示模块的下部，并且与所述显示模块之间通过隔离层相隔；以及压力电极，其以图案化方式形成于所述显示模块，其中，所述触摸输入装置从所述压力电极检测随所述压力电极与所述基板之间的电容变化的电子信号，所述电容随所述压力电极与所述基板之间的相对距离的变化而发生变化，所述触摸输入装置根据所述电容检测所述触摸压力。According to another embodiment of the present invention, the touch input device can detect the touch pressure applied to the touch surface, and is characterized in that it includes: a display module, which has a display panel; a substrate, which is arranged at the lower part of the display module, and separated from the display module by an isolation layer; and a pressure electrode, which is formed in the display module in a patterned manner, wherein the touch input device detects from the pressure electrode as the pressure electrode and the substrate The electric signal is an electronic signal of a change in capacitance between the pressure electrode and the substrate, and the capacitance changes with the change of the relative distance between the pressure electrode and the substrate, and the touch input device detects the touch pressure according to the capacitance.
技术效果technical effect
本实用新型能够提供一种不仅能够检测触摸屏上的触摸的位置，还能够检测触摸压力大小的包括显示模块的智能手机。The utility model can provide a smart mobile phone including a display module, which can not only detect the touched position on the touch screen, but also detect the touch pressure.
并且，本实用新型能够提供一种在不降低显示模块的清晰度(visibility)及光透过率的同时检测触摸位置及触摸压力大小的包括显示模块的智能手机。Moreover, the present invention can provide a smart phone including a display module that detects a touch position and a touch pressure without reducing the visibility and light transmittance of the display module.
附图说明Description of drawings
图1为根据本实用新型实施例的电容式触摸感测板及执行其动作的构成的简要图；FIG. 1 is a schematic diagram of a capacitive touch sensing panel according to an embodiment of the present invention and the composition of performing its actions;
图2a、图2b及图2c为显示根据本实用新型实施例的触摸输入装置中显示模块与触摸感测板的相对位置的概念图；2a, 2b and 2c are conceptual diagrams showing the relative positions of the display module and the touch sensing board in the touch input device according to an embodiment of the present invention;
图3为根据本实用新型第一实施形态的具有能够检测触摸位置及触摸压力的结构的触摸输入装置的剖面图；3 is a cross-sectional view of a touch input device with a structure capable of detecting touch positions and touch pressures according to a first embodiment of the present invention;
图4为根据本实用新型第二实施形态的触摸输入装置的剖面图；4 is a cross-sectional view of a touch input device according to a second embodiment of the present invention;
图5为根据本实用新型第二实施形态的触摸输入装置的立体图；5 is a perspective view of a touch input device according to a second embodiment of the present invention;
图6a为根据本实用新型第一实施例的包括压力电极图形的触摸输入装置的剖面图；6a is a cross-sectional view of a touch input device including a pressure electrode pattern according to a first embodiment of the present invention;
图6b为图6a所示触摸输入装置受到压力的情况的剖面图；Fig. 6b is a cross-sectional view of the situation where the touch input device shown in Fig. 6a is under pressure;
图6c为根据本实用新型第二实施例的包括压力电极的触摸输入装置的剖面图；6c is a cross-sectional view of a touch input device including pressure electrodes according to a second embodiment of the present invention;
图6d显示根据本实用新型第一实施例的压力电极图形；Fig. 6d shows the pressure electrode pattern according to the first embodiment of the present invention;
图6e显示根据本实用新型第二实施例的压力电极图形；Fig. 6e shows the pressure electrode pattern according to the second embodiment of the present invention;
图6f及图6g显示能够适用于本实用新型实施例的压力电极图形；Figure 6f and Figure 6g show the pressure electrode pattern applicable to the embodiment of the present invention;
图7a为根据本实用新型第三实施例的包括压力电极的触摸输入装置的剖面图；7a is a cross-sectional view of a touch input device including pressure electrodes according to a third embodiment of the present invention;
图7b显示根据本实用新型第三实施例的压力电极图形；Fig. 7b shows the pressure electrode pattern according to the third embodiment of the present invention;
图8显示根据本实用新型实施例的压力电极的附着结构；Fig. 8 shows the attachment structure of the pressure electrode according to the embodiment of the present invention;
图9a及图9b显示根据本实用新型第二实施例的压力电极的附着方法；Fig. 9a and Fig. 9b show the attachment method of the pressure electrode according to the second embodiment of the present invention;
图10a至图10c显示根据实用新型第二实施例的将压力电极连接到触摸感测电路的方法；10a to 10c show the method of connecting the pressure electrode to the touch sensing circuit according to the second embodiment of the utility model;
图11a至图11c显示根据本实用新型实施例的压力电极构成多个信道的情况；Fig. 11a to Fig. 11c show the situation that the pressure electrode according to the embodiment of the present invention constitutes a plurality of channels;
图12为显示通过非导电性客体加压根据本实用新型实施形态的触摸输入装置1000的触摸表面中心部的实验得到的对应于客体克重的电容的变化量的坐标图。FIG. 12 is a graph showing the amount of change in capacitance corresponding to the grammage of the object obtained through an experiment in which a non-conductive object pressurizes the central portion of the touch surface of the touch input device 1000 according to the embodiment of the present invention.
具体实施方式detailed description
以下参照显示有可实施本实用新型的特定实施例的附图详细说明本实用新型。通过详细说明使得本领域普通技术人员足以实施本实用新型。本实用新型的多种实施例虽各不相同，但并非相互排斥。例如，说明书中记载的特定形状、结构及特性可在不超出本实用新型技术方案及范围的前提下通过其他实施例实现。另外，公开的各实施例内的个别构成要素的位置或配置在不超出本实用新型的技术方案及范围的前提下可以变更实施。因此，以下详细说明并非以限定为目的，因此确切定义本实用新型的范围的话仅限于与技术方案所记载的范围等同的所有范围。附图中类似的附图标记在各方面表示相同或类似的功能。The utility model will be described in detail below with reference to the accompanying drawings showing specific embodiments in which the utility model can be implemented. The detailed description enables those skilled in the art to implement the utility model. The various embodiments of the invention are not identical but not mutually exclusive. For example, the specific shapes, structures and characteristics recorded in the specification can be realized through other embodiments without going beyond the technical solution and scope of the present utility model. In addition, the positions and arrangements of individual components in each of the disclosed embodiments can be changed and implemented without departing from the technical scheme and scope of the present invention. Therefore, the following detailed description is not intended to be limited, and when the scope of the present invention is accurately defined, it is limited to all ranges equivalent to the scope described in the claims. Like reference numerals in the figures indicate the same or similar functions in all respects.
以下参照附图说明根据本实用新型实施例的触摸输入装置。以下举例示出电容式触摸感测板100及压力检测模块400，但也可以适用能够通过任意方式检测触摸位置及/或触摸压力的触摸感测板100及压力检测模块400。A touch input device according to an embodiment of the present invention will be described below with reference to the accompanying drawings. The capacitive touch sensing board 100 and the pressure detection module 400 are shown as examples below, but the touch sensing board 100 and the pressure detection module 400 capable of detecting touch position and/or touch pressure by any means may also be applied.
图1为根据本实用新型实施例的电容式的触摸感测板100及执行其动作的构成的简要图。参照图1，根据本实用新型实施例的触摸感测板100包括多个驱动电极TX1至TXn及多个接收电极RX1至RXm，可包括驱动部120及感测部110，其中驱动部120为了所述触摸感测板100的动作而向所述多个驱动电极TX1至TXn施加驱动信号，感测部110接收包括对触摸感测板100的触摸表面进行触摸时发生变化的电容变化量信息的感测信号以检测触摸及触摸位置。FIG. 1 is a schematic diagram of a capacitive touch-sensing panel 100 according to an embodiment of the present invention and the structure for performing its actions. Referring to FIG. 1 , a touch sensing panel 100 according to an embodiment of the present invention includes a plurality of driving electrodes TX1 to TXn and a plurality of receiving electrodes RX1 to RXm, and may include a driving part 120 and a sensing part 110, wherein the driving part 120 is for all Based on the operation of the touch sensor panel 100 described above, drive signals are applied to the plurality of drive electrodes TX1 to TXn. signal to detect touches and touch locations.
如图1所示，触摸感测板100可包括多个驱动电极TX1至TXn与多个接收电极RX1至RXm。图1显示触摸感测板100的多个驱动电极TX1至TXn与多个接收电极RX1至RXm构成正交阵列，但本实用新型不限于此，多个驱动电极TX1至TXn与多个接收电极RX1至RXm可以构成对角线、同心圆或三维随机排列等任意维度及其应用排列。其中n及m是正整数，两者的值可以相同或不同，大小可以因实施例而异。As shown in FIG. 1 , the touch sensing board 100 may include a plurality of driving electrodes TX1 to TXn and a plurality of receiving electrodes RX1 to RXm. 1 shows that a plurality of driving electrodes TX1 to TXn and a plurality of receiving electrodes RX1 to RXm of the touch sensing board 100 form an orthogonal array, but the utility model is not limited thereto. A plurality of driving electrodes TX1 to TXn and a plurality of receiving electrodes RX1 To RXm can form any dimension such as diagonal line, concentric circle or three-dimensional random arrangement and its application arrangement. Where n and m are positive integers, the values of the two may be the same or different, and the values may vary according to the embodiments.
如图1所示，多个驱动电极TX1至TXn与多个接收电极RX1至RXm可排列成分别相互交叉。驱动电极TX包括向第一轴方向延长的多个驱动电极TX1至TXn，接收电极RX可包括向交叉于第一轴方向的第二轴方向延长的多个接收电极RX1至RXm。As shown in FIG. 1 , a plurality of driving electrodes TX1 to TXn and a plurality of receiving electrodes RX1 to RXm may be arranged to cross each other, respectively. The driving electrode TX includes a plurality of driving electrodes TX1 to TXn extending in a first axis direction, and the receiving electrode RX may include a plurality of receiving electrodes RX1 to RXm extending in a second axis direction crossing the first axis direction.
根据本实用新型实施例的触摸感测板100中，多个驱动电极TX1至TXn与多个接收电极RX1至RXm可形成于相同的层。例如，多个驱动电极TX1至TXn与多个接收电极RX1至RXm可形成于绝缘膜(未示出)的同一面上。并且，多个驱动电极TX1至TXn与多个接收电极RX1至RXm也可以形成于不同的层。例如，多个驱动电极TX1至TXn与多个接收电极RX1至RXm可以分别形成于一个绝缘膜(未示出)的两面，或者，多个驱动电极TX1至TXn形成于第一绝缘膜(未示出)的一面，多个接收电极RX1至RXm形成于不同于所述第一绝缘膜的第二绝缘膜(未示出)的一面上。In the touch sensing panel 100 according to the embodiment of the present invention, the plurality of driving electrodes TX1 to TXn and the plurality of receiving electrodes RX1 to RXm may be formed on the same layer. For example, a plurality of driving electrodes TX1 to TXn and a plurality of receiving electrodes RX1 to RXm may be formed on the same face of an insulating film (not shown). Also, the plurality of driving electrodes TX1 to TXn and the plurality of receiving electrodes RX1 to RXm may be formed in different layers. For example, a plurality of driving electrodes TX1 to TXn and a plurality of receiving electrodes RX1 to RXm may be respectively formed on both sides of one insulating film (not shown), or a plurality of driving electrodes TX1 to TXn may be formed on a first insulating film (not shown). Out), a plurality of reception electrodes RX1 to RXm are formed on a side of a second insulating film (not shown) different from the first insulating film.
多个驱动电极TX1至TXn与多个接收电极RX1至RXm可以通过由透明导电物质(例如，二氧化锡(SnO2)及氧化铟(In2O3)等构成的铟锡氧化物(Indium Tin Oxide；ITO)或氧化锑锡(Antimony Tin Oxide；ATO))等形成。但这只是举例而已，驱动电极TX及接收电极RX也可以由其他透明导电物质或非透明导电物质形成。例如，驱动电极TX及接收电极RX可以由包括银墨(silver ink)、铜(copper)及碳纳米管(Carbon Nanotube；CNT)中至少一种的物质构成。并且，驱动电极TX及接收电极RX可以采用金属网(metalmesh)或由纳米银(nano silver)物质构成。A plurality of driving electrodes TX1 to TXn and a plurality of receiving electrodes RX1 to RXm can be made of indium tin oxide (Indium Tin Oxide) composed of a transparent conductive material (for example, tin dioxide (SnO2 ) and indium oxide (In2 O3 ). Oxide; ITO) or antimony tin oxide (Antimony Tin Oxide; ATO)) and so on. But this is just an example, and the driving electrodes TX and the receiving electrodes RX can also be formed of other transparent conductive materials or non-transparent conductive materials. For example, the driving electrode TX and the receiving electrode RX may be composed of at least one material including silver ink, copper and carbon nanotube (Carbon Nanotube; CNT). Moreover, the driving electrode TX and the receiving electrode RX can be made of metal mesh or nano silver.
根据本实用新型实施例的驱动部120可以向驱动电极TX1至TXn施加驱动信号。根据本实用新型的实施例，驱动信号可以以一次向一个驱动电极施加的方式依次施加到第一驱动电极TX1至第n驱动电极TXn。上述施加驱动信号的过程可以再次重复进行。但这只是举例而已，其他实施例中可以同时向多个驱动电极施加驱动信号。The driving part 120 according to an embodiment of the present invention may apply a driving signal to the driving electrodes TX1 to TXn. According to an embodiment of the present invention, the driving signal may be sequentially applied to the first driving electrode TX1 to the nth driving electrode TXn in a manner of being applied to one driving electrode at a time. The above process of applying the driving signal can be repeated again. But this is just an example, and in other embodiments, driving signals can be applied to multiple driving electrodes at the same time.
感测部110可以通过接收电极RX1至RXm接收包括施加驱动信号的驱动电极TX1至TXn与接收电极RX1至RXm之间生成的电容(Cm)101的信息的感测信号，以检测触摸与否及触摸位置。例如，感测信号可以是施加到驱动电极TX的驱动信号通过驱动电极TX与接收电极RX之间生成的电容(Cm)101耦合的信号。如上，可以将通过接收电极RX1至RXm感测施加到第一驱动电极TX1至第n驱动电极TXn的驱动信号的过程称为扫描(scan)触摸感测板100。The sensing part 110 may receive a sensing signal including information of a capacitance (Cm) 101 generated between the driving electrodes TX1 to TXn to which the driving signal is applied and the receiving electrodes RX1 to RXm through the receiving electrodes RX1 to RXm to detect touch or not and Touch location. For example, the sensing signal may be a signal in which a driving signal applied to the driving electrode TX is coupled through a capacitance (Cm) 101 generated between the driving electrode TX and the receiving electrode RX. As above, the process of sensing the driving signals applied to the first to nth driving electrodes TX1 to TXn through the receiving electrodes RX1 to RXm may be referred to as scanning the touch sensing panel 100 .
例如，感测部110可包括与各接收电极RX1至RXm通过开关连接的接收器(未示出)。所述开关在感测相应接收电极RX的信号的时间区间开启(on)使得接收器能够从接收电极RX感测到感测信号。接收器可包括放大器(未示出)及结合于放大器的负(-)输入端与放大器的输出端之间即反馈路径的反馈电容器。此时，放大器的正(+)输入端可与接地(ground)连接。并且，接收器还可以包括与反馈电容器并联的复位开关。复位开关可以对接收器执行的从电流到电压的转换进行复位。放大器的负输入端连接于相应接收电极RX，可以接收包括关于电容(Cm)101的信息的电流信号后通过积分转换为电压。感测部110还可以包括将通过接收器积分的数据转换为数字数据的模数转换器(未示出：analog to digital converter；ADC)。数字数据随后输入到处理器(未示出)，然后通过处理用于获取关于触摸感测板100的触摸信息。感测部110在包括接收器的同时还可以包括ADC及处理器。For example, the sensing part 110 may include a receiver (not shown) connected to each of the receiving electrodes RX1 to RXm through a switch. The switch is turned on (on) during a time interval of sensing a signal of a corresponding receiving electrode RX so that the receiver can sense a sensing signal from the receiving electrode RX. The receiver may include an amplifier (not shown) and a feedback capacitor coupled between the negative (-) input of the amplifier and the output of the amplifier, ie, the feedback path. At this point, the positive (+) input of the amplifier can be connected to ground. Also, the receiver may further include a reset switch connected in parallel with the feedback capacitor. The reset switch resets the current-to-voltage conversion performed by the receiver. The negative input terminal of the amplifier is connected to the corresponding receiving electrode RX, which can receive the current signal including the information about the capacitance (Cm) 101 and convert it into a voltage by integration. The sensing part 110 may further include an analog to digital converter (not shown: analog to digital converter; ADC) converting data integrated by the receiver into digital data. The digital data is then input to a processor (not shown) and then processed for obtaining touch information about the touch-sensing panel 100 . The sensing unit 110 may also include an ADC and a processor while including a receiver.
控制部130可以执行控制驱动部120与感测部110的动作的功能。例如，控制部130可以生成驱动控制信号后发送给驱动部120使得驱动信号能够在预定时间施加到预先设定的驱动电极TX。并且，控制部130可以生成感测控制信号后发送给感测部110使得感测部110在预定时间从预先设定的接收电极RX接收感测信号并执行预先设定的功能。The control unit 130 can perform the function of controlling the actions of the driving unit 120 and the sensing unit 110 . For example, the control unit 130 may generate a driving control signal and send it to the driving unit 120 so that the driving signal can be applied to a preset driving electrode TX at a predetermined time. In addition, the control unit 130 may generate a sensing control signal and send it to the sensing unit 110 so that the sensing unit 110 receives the sensing signal from a preset receiving electrode RX at a predetermined time and executes a preset function.
图1中驱动部120及感测部110可以构成能够感测对本实用新型实施例的触摸感测板100的触摸与否及触摸位置的触摸检测装置(未标出)。根据本实用新型实施例的触摸检测装置还可以包括控制部130。根据本实用新型实施例的触摸检测装置可以在包括触摸感测板100的触摸输入装置1000中集成于作为触摸感测电路的触摸感测IC(touchsensing Integrated Circuit：图10a～图10c中的150)上。触摸感测板100中的驱动电极TX及接收电极RX例如可以通过导电线路(conductive trace)及/或印刷于电路基板上的导电图形(conductive pattern)等连接到触摸感测IC 150中的驱动部120及感测部110。触摸感测IC 150可以位于印刷有导电图形的电路基板，例如图10a～图10c中用160表示的第一印刷电路板(以下称为‘第一PCB’)上。根据实施例，触摸感测IC 150可以装配在用于触摸输入装置1000工作的主板上。In FIG. 1 , the driving unit 120 and the sensing unit 110 may constitute a touch detection device (not shown) capable of sensing whether the touch sensor panel 100 is touched or not and the position of the touch in the embodiment of the present invention. The touch detection device according to the embodiment of the present invention may further include a control unit 130 . The touch detection device according to the embodiment of the present utility model can be integrated in a touch sensing IC (touchsensing Integrated Circuit: 150 in FIGS. superior. The driving electrodes TX and receiving electrodes RX in the touch sensing board 100 can be connected to the driving part in the touch sensing IC 150 through conductive traces and/or conductive patterns printed on the circuit board, etc., for example. 120 and the sensing unit 110. The touch sensing IC 150 may be located on a circuit substrate printed with conductive patterns, such as a first printed circuit board (hereinafter referred to as 'first PCB') denoted by 160 in FIGS. 10a-10c. According to an embodiment, the touch sensing IC 150 may be mounted on a main board for the operation of the touch input device 1000 .
如上所述，驱动电极TX与接收电极RX的每个交叉点都生成预定值的电容Cm，手指之类的客体靠近触摸感测板100时这种电容的值可以发生变化。图1中所述电容可以表示互电容Cm。感测部110通过感测这种电学特性，可以感测对触摸感测板100触摸与否及/或触摸位置。例如，可以感测对由第一轴与第二轴构成的二维平面构成的触摸感测板100的表面的触摸与否及/或其位置。As described above, each intersection of the driving electrodes TX and the receiving electrodes RX generates a capacitance Cm of a predetermined value, and the value of this capacitance can change when an object such as a finger approaches the touch-sensing panel 100 . The capacitance described in FIG. 1 may represent a mutual capacitance Cm. The sensing unit 110 can sense whether or not the touch sensing panel 100 is touched and/or the position of the touch by sensing such electrical characteristics. For example, the presence or absence of a touch and/or its position on the surface of the touch-sensing panel 100 constituted by a two-dimensional plane constituted by the first axis and the second axis may be sensed.
进一步来讲，在发生对触摸感测板100的触摸时可以通过检测被施加驱动信号的驱动电极TX检测触摸的第二轴方向的位置。同样，对触摸感测板100进行触摸时，可以从通过接收电极RX接收的接收信号检测电容变化，以检测触摸的第一轴方向的位置。Further, when a touch occurs to the touch sensing panel 100 , the position in the second axis direction of the touch may be detected by detecting the driving electrode TX to which the driving signal is applied. Also, when the touch sensing panel 100 is touched, a change in capacitance may be detected from a reception signal received through the reception electrode RX to detect a position in the first axis direction of the touch.
以上详细说明的触摸感测板100为互电容式的触摸感测板，但根据本实用新型实施例的触摸输入装置1000中，用于检测触摸与否及触摸位置的触摸感测板100除上述方法以外还可以通过自电容方式、表面电容方式、投影(projected)电容方式、电阻膜方式、表面弹性波方式(surface acoustic wave；SAW)、红外线(infrared)方式、光学成像方式(optical imaging)、分散信号方式(dispersive signal technology)及声学脉冲识别(acousticpulse recognition)方式等任意的触摸感测方式实现。The touch sensing board 100 described in detail above is a mutual capacitive touch sensing board, but in the touch input device 1000 according to the embodiment of the present utility model, the touch sensing board 100 used for detecting touch or not and the touch position is not the above-mentioned In addition to the method, self-capacitance, surface capacitance, projected capacitance, resistive film, surface acoustic wave (SAW), infrared, optical imaging, Any touch sensing method such as dispersive signal technology and acoustic pulse recognition method can be realized.
在根据本实用新型实施例的触摸输入装置1000中，用于检测触摸位置的触摸感测板100可位于显示模块200的外部或内部。In the touch input device 1000 according to an embodiment of the present invention, the touch sensing panel 100 for detecting a touch position may be located outside or inside the display module 200 .
根据本实用新型实施例的触摸输入装置1000的显示模块200可以是包括于液晶显示装置(Liquid Crystal Display；LCD)、等离子显示板(Plasma Display Panel；PDP)、有机发光显示装置(Organic Light Emitting Diode；OLED)等的显示板。因此，用户可以一边从视觉上确认显示板显示的画面一边对触摸表面进行触摸以进行输入行为。此时，显示模块200可包括控制电路，该控制电路使得从用于触摸输入装置1000工作的主板(mainboard)上的中央处理单元即CPU(central processing unit)或应用处理器(applicationprocessor；AP)等接收输入并在显示板上显示所需内容。这种控制电路可以装配在图9a、9b中的第二印刷电路板210(以下称为第二PCB)上。此时，用于显示板200工作的控制电路可包括显示板控制IC、图形控制IC(graphic controller IC)及其他显示板200工作所需的电路。The display module 200 of the touch input device 1000 according to the embodiment of the present utility model may be included in a liquid crystal display device (Liquid Crystal Display; LCD), a plasma display panel (Plasma Display Panel; PDP), an organic light emitting display device (Organic Light Emitting Diode ; OLED) and other display panels. Therefore, the user can perform an input action by touching the touch surface while visually checking the screen displayed on the display panel. At this time, the display module 200 may include a control circuit that enables the CPU (central processing unit) or application processor (application processor; AP) on the mainboard (mainboard) for the touch input device 1000 to work. Receive input and display desired content on the display panel. Such a control circuit may be mounted on a second printed circuit board 210 (hereinafter referred to as second PCB) in Figs. 9a, 9b. At this time, the control circuit for the operation of the display panel 200 may include a display panel control IC, a graphic controller IC (graphic controller IC) and other circuits required for the operation of the display panel 200 .
图2a、图2b及图2c为显示根据本实用新型实施例的触摸输入装置中显示模块与触摸感测板的相对位置的概念图。图2a至图2c显示的显示板为LCD板，但这不过是举例，实际上根据本实用新型实施例的触摸输入装置1000可以适用任意的显示板。FIG. 2 a , FIG. 2 b and FIG. 2 c are conceptual diagrams showing the relative positions of the display module and the touch sensing board in the touch input device according to an embodiment of the present invention. The display panels shown in FIGS. 2 a to 2 c are LCD panels, but this is just an example. Actually, the touch input device 1000 according to the embodiment of the present invention can be applied to any display panels.
本申请说明书中附图标记200表示显示模块，但图2及相关说明中附图标记200不仅表示显示模块，还可以表示显示板。如图2a至图2c所示，LCD板可包括具有液晶元件(liquid crystal cell)的液晶层250、液晶层250两端的包括电极的第一玻璃层261与第二玻璃层262、与所述液晶层250相对的方向上的位于所述第一玻璃层261的一面的第一偏光层271及位于所述第二玻璃层262的一面的第二偏光层272。为执行显示功能，LCD板还可以包括其他构成且可以变形，这是本领域技术人员的公知常识。The reference numeral 200 in the specification of the present application represents a display module, but in FIG. 2 and related descriptions, the reference numeral 200 not only represents a display module, but may also represent a display panel. 2a to 2c, the LCD panel may include a liquid crystal layer 250 having liquid crystal cells, a first glass layer 261 and a second glass layer 262 including electrodes at both ends of the liquid crystal layer 250, and the liquid crystal layer 250. The first polarizing layer 271 on one side of the first glass layer 261 and the second polarizing layer 272 on one side of the second glass layer 262 in the direction opposite to the layer 250 . In order to perform the display function, the LCD panel may also include other components and be deformed, which is common knowledge of those skilled in the art.
图2a显示触摸输入装置1000中的触摸感测板100配置于显示模块200外部的情况。触摸输入装置1000的触摸表面可以是触摸感测板100的表面。图2a中能够作为触摸表面的触摸感测板100的面可以是触摸感测板100的上部面。并且根据实施例，触摸输入装置1000的触摸表面可以是显示模块200的外面。图2a中，能够成为触摸表面的显示模块200的外面可以是显示模块200的第二偏光层272的下部面。在此，为保护显示模块200，可以用玻璃之类的覆盖层(未示出)盖住显示模块200的下部面。FIG. 2 a shows the situation that the touch sensing board 100 in the touch input device 1000 is disposed outside the display module 200 . The touch surface of the touch input device 1000 may be the surface of the touch sensor panel 100 . The face of the touch-sensing panel 100 in FIG. 2 a that can be a touch surface may be the upper face of the touch-sensing panel 100 . And according to an embodiment, the touch surface of the touch input device 1000 may be the outside of the display module 200 . In FIG. 2 a , the outer surface of the display module 200 that can be a touch surface may be the lower surface of the second polarizing layer 272 of the display module 200 . Here, in order to protect the display module 200, the lower surface of the display module 200 may be covered with a cover layer (not shown) such as glass.
图2b及2c显示触摸输入装置1000中的触摸感测板100配置于显示板200内部的情况。在此，图2b中用于检测触摸位置的触摸感测板100配置于第一玻璃层261与第一偏光层271之间。此时，触摸输入装置1000的触摸表面是显示模块200的外面，在图2b中可以是上部面或下部面。图2c显示液晶层250包括用于检测触摸位置的触摸感测板100的情况。此时，触摸输入装置1000的触摸表面是显示模块200的外面，图2c中可以是上部面或下部面。图2b及图2c中，能够作为触摸表面的显示模块200的上部面或下部面可以被玻璃之类的覆盖层(未示出)盖住。2 b and 2 c show the situation that the touch sensing board 100 in the touch input device 1000 is disposed inside the display board 200 . Here, the touch sensor panel 100 for detecting the touch position in FIG. 2 b is disposed between the first glass layer 261 and the first polarizing layer 271 . At this time, the touch surface of the touch input device 1000 is the outside of the display module 200, which may be the upper face or the lower face in FIG. 2b. FIG. 2c shows a case where the liquid crystal layer 250 includes the touch-sensing panel 100 for detecting a touch position. At this time, the touch surface of the touch input device 1000 is the outside of the display module 200, which may be the upper surface or the lower surface in FIG. 2c. In Fig. 2b and Fig. 2c, the upper or lower face of the display module 200, which can be used as a touch surface, can be covered by a covering layer (not shown) such as glass.
以上说明了检测对根据本实用新型实施例的触摸感测板100的触摸与否及/或触摸位置，但利用根据本实用新型实施例的触摸感测板100不仅能够检测触摸与否及/或触摸位置，还能够检测触摸压力的大小。另外，还可以包括独立于触摸感测板100检测触摸压力的压力检测模块检测触摸压力的大小。The above has described the detection of whether the touch sensor board 100 according to the embodiment of the present invention is touched or not and/or the touch position, but the use of the touch sensor board 100 according to the embodiment of the present invention can not only detect whether the touch sensor board 100 is touched or not and/or The touch position can also detect the size of the touch pressure. In addition, a pressure detection module that detects the touch pressure independently of the touch sensing panel 100 may also be included to detect the magnitude of the touch pressure.
图3为根据本实用新型第一实施形态的具有能够检测触摸位置及触摸压力的结构的触摸输入装置的剖面图。3 is a cross-sectional view of a touch input device having a structure capable of detecting touch positions and touch pressures according to a first embodiment of the present invention.
包括显示模块200的触摸输入装置1000中用于检测触摸位置的触摸感测板100及压力检测模块400可附着在显示模块200的前面。因此能够保护显示模块200的显示屏，并且能够提高触摸感测板100的触摸检测灵敏度。The touch sensing panel 100 and the pressure detection module 400 for detecting a touch position in the touch input device 1000 including the display module 200 may be attached to the front of the display module 200 . Therefore, the display screen of the display module 200 can be protected, and the touch detection sensitivity of the touch sensing panel 100 can be improved.
此时，压力检测模块400也可以与用于检测触摸位置的触摸感测板100独立工作，例如，可以使压力检测模块400独立于检测触摸位置的触摸感测板100仅检测压力。并且，也可以使压力检测模块400结合于检测触摸位置的触摸感测板100检测触摸压力。例如，可以采用用于检测触摸位置的触摸感测板100中的驱动电极TX与接收电极RX中的至少一个电极检测触摸压力。At this time, the pressure detection module 400 can also work independently of the touch sensor board 100 for detecting the touch position, for example, the pressure detection module 400 can only detect pressure independently of the touch sensor board 100 for detecting the touch position. Moreover, the pressure detection module 400 can also be combined with the touch sensing board 100 for detecting the touch position to detect the touch pressure. For example, at least one of the driving electrode TX and the receiving electrode RX in the touch sensing panel 100 for detecting the touch position may be used to detect the touch pressure.
图3显示压力检测模块400能够结合于触摸感测板100检测触摸压力的情况。图3中，压力检测模块400包括使所述触摸感测板100与显示模块200之间相隔的隔离层420。压力检测模块400可包括通过隔离层420相隔于触摸感测板100的基准电位层。此时，显示模块200可以起到基准电位层的功能。FIG. 3 shows the situation that the pressure detection module 400 can be combined with the touch sensing board 100 to detect touch pressure. In FIG. 3 , the pressure detection module 400 includes an isolation layer 420 separating the touch sensing board 100 from the display module 200 . The pressure detection module 400 may include a reference potential layer separated from the touch sensing board 100 by an isolation layer 420 . At this time, the display module 200 may function as a reference potential layer.
基准电位层可以具有能够引起驱动电极TX与接收电极RX之间生成的电容101发生变化的任意电位。例如，基准电位层可以是具有接地(ground)电位的接地层。基准电位层可以是显示模块200的接地(ground)层。此时，基准电位层可以是与触摸感测板100的二维平面平行的平面。The reference potential layer may have any potential that can cause a change in the capacitance 101 generated between the driving electrode TX and the receiving electrode RX. For example, the reference potential layer may be a ground layer having a ground potential. The reference potential layer may be a ground layer of the display module 200 . At this time, the reference potential layer may be a plane parallel to the two-dimensional plane of the touch sensing panel 100 .
如图3所示，触摸感测板100与作为基准电位层的显示模块200相互间隔。此时，根据触摸感测板100与显示模块200的粘接方法的差异，触摸感测板100与显示模块200之间的隔离层420可以是气隙(air gap)。As shown in FIG. 3 , the touch sensing board 100 and the display module 200 serving as a reference potential layer are spaced apart from each other. At this time, according to the difference in bonding methods of the touch sensing board 100 and the display module 200 , the isolation layer 420 between the touch sensing board 100 and the display module 200 may be an air gap.
此时，可以利用双面胶带430(Double Adhesive Tape；DAT)固定触摸感测板100与显示模块200。例如，触摸感测板100与显示模块200是各面积相层叠的形状，触摸感测板100与显示模块200的各边缘区域的两个层通过双面胶带430粘接，触摸感测板100与显示模块200的其余区域可相隔预定距离d。At this time, the touch sensor board 100 and the display module 200 can be fixed by using a double-sided adhesive tape 430 (Double Adhesive Tape; DAT). For example, the touch sensing board 100 and the display module 200 are in the shape of stacking each area, and the two layers of each edge area of the touch sensing board 100 and the display module 200 are bonded by double-sided adhesive tape 430, and the touch sensing board 100 and the display module 200 are bonded together. The remaining areas of the display module 200 may be separated by a predetermined distance d.
通常，对触摸表面进行触摸时触摸感测板100不发生弯曲的同时，驱动电极TX与接收电极RX之间的电容(Cm)101仍发生变化。即，对触摸感测板100进行触摸时互电容(Cm)101可以相比于基本互电容减小。其原因在于手指等作为导体的客体靠近触摸感测板100时客体起到接地(GND)的作用，互电容(Cm)101的边缘电容(fringingcapacitance)被客体吸收。在没有对触摸感测板100进行触摸时，基本互电容就是驱动电极TX与接收电极RX之间的互电容的值。Generally, the capacitance (Cm) 101 between the driving electrode TX and the receiving electrode RX still changes while the touch-sensing panel 100 does not bend when the touch surface is touched. That is, the mutual capacitance (Cm) 101 may be reduced compared to the basic mutual capacitance when the touch sensing panel 100 is touched. The reason is that when a conductor object such as a finger approaches the touch sensor panel 100 , the object acts as a ground (GND), and the fringing capacitance of the mutual capacitance (Cm) 101 is absorbed by the object. The basic mutual capacitance is the value of the mutual capacitance between the driving electrode TX and the receiving electrode RX when the touch sensing panel 100 is not touched.
由于客体对触摸感测板100的触摸表面即上部表面进行触摸而受到压力的情况下，触摸感测板100可以发生弯曲。此时，驱动电极TX与接收电极RX之间的互电容(Cm)101的值可进一步减小。其原因在于触摸感测板100弯曲导致触摸感测板100与基准电位层之间的距离从d减小到d′，因此所述互电容(Cm)101的边缘电容不仅被客体吸收，还会被基准电位层吸收。触摸客体为非导体的情况下互电容(Cm)的变化可以仅源于触摸感测板100与基准电位层之间的距离变化(d-d′)。In a case where pressure is applied due to an object touching the touch surface, ie, the upper surface, of the touch-sensing panel 100 , the touch-sensing panel 100 may be bent. At this time, the value of the mutual capacitance (Cm) 101 between the driving electrode TX and the receiving electrode RX can be further reduced. The reason is that the bending of the touch-sensing panel 100 causes the distance between the touch-sensing panel 100 and the reference potential layer to decrease from d to d', so the fringe capacitance of the mutual capacitance (Cm) 101 is not only absorbed by the object, but also Absorbed by the reference potential layer. In the case where the touch object is a non-conductor, the variation of the mutual capacitance (Cm) may only come from the variation of the distance (d−d′) between the touch sensing board 100 and the reference potential layer.
如上所述，触摸感测板100及压力检测模块400位于显示模块200上的触摸输入装置1000不仅能够检测触摸位置，还能够检测触摸压力。As described above, the touch input device 1000 in which the touch sensing panel 100 and the pressure detection module 400 are located on the display module 200 can detect not only a touch position but also a touch pressure.
但如图3所示，触摸感测板100及压力检测模块400均配置在显示模块200上部的情况下，具有显示模块的显示特性下降的问题。尤其，显示模块200上部包括气隙的情况下显示模块的清晰度及光透过率可能会下降。However, as shown in FIG. 3 , when both the touch sensor panel 100 and the pressure detection module 400 are disposed above the display module 200 , there is a problem that the display characteristics of the display module are degraded. In particular, if the upper part of the display module 200 includes an air gap, the clarity and light transmittance of the display module may decrease.
因此为了防止发生这种问题，可以不在用于检测触摸位置的触摸感测板100与显示模块200之间配置气隙，而是通过光学胶(Optically Clear Adhesive；OCA)之类的粘接剂完全层压(lamination)触摸感测板100与显示模块200。Therefore, in order to prevent this problem from occurring, an air gap may not be configured between the touch sensor panel 100 for detecting the touch position and the display module 200, but an adhesive such as Optically Clear Adhesive (OCA) may be used to completely The touch sensor board 100 and the display module 200 are laminated.
图4为根据本实用新型第二实施形态的触摸输入装置的剖面图。根据本实用新型第二实施形态的触摸输入装置1000中用于检测触摸位置的触摸感测板100与显示模块200之间通过粘接剂完全层压。因此可提高能够通过触摸感测板100的触摸表面确认的显示模块200显示的颜色鲜明度、清晰度及光透过性。4 is a cross-sectional view of a touch input device according to a second embodiment of the present invention. In the touch input device 1000 according to the second embodiment of the present invention, the touch sensing board 100 for detecting the touch position and the display module 200 are completely laminated by an adhesive. Therefore, the color vividness, clarity, and light transmittance of the display module 200 that can be confirmed through the touch surface of the touch sensor panel 100 can be improved.
图4、图5及参照该图说明的内容示出了触摸感测板100通过粘接剂层压附着在显示模块200上的根据本实用新型第二实施形态的触摸输入装置1000，但根据本实用新型第二实施形态的触摸输入装置1000还可以包括图2b及图2c等所示的触摸感测板100配置在显示模块200内部的情况。进一步来讲，图4及图5示出了触摸感测板100盖住显示模块200的情况，而触摸感测板100位于显示模块200内部且显示模块200被玻璃之类的覆盖层盖住的触摸输入装置1000可以作为本实用新型的第二实施形态。Fig. 4, Fig. 5 and the contents explained with reference to the figures show the touch input device 1000 according to the second embodiment of the present utility model in which the touch sensing board 100 is laminated and attached to the display module 200 through an adhesive, but according to the present invention The touch input device 1000 of the second embodiment of the utility model may also include the case where the touch sensing board 100 shown in FIG. 2 b and FIG. 2 c is disposed inside the display module 200 . Further, FIG. 4 and FIG. 5 show the situation that the touch sensing board 100 covers the display module 200, and the touch sensing board 100 is located inside the display module 200 and the display module 200 is covered by a covering layer such as glass. The touch input device 1000 can be used as the second embodiment of the present invention.
根据本实用新型实施例的触摸输入装置1000可包括手机(cell phone)、个人数字助理(Personal Data Assistant；PDA)、智能手机(smart phone)、平板电脑(tablet PersonalComputer)、MP3播放器、笔记本电脑(notebook)等具有触摸屏的电子装置。The touch input device 1000 according to the embodiment of the present utility model may include a mobile phone (cell phone), a personal digital assistant (Personal Data Assistant; PDA), a smart phone (smart phone), a tablet computer (tablet PersonalComputer), an MP3 player, a notebook computer (notebook) and other electronic devices with a touch screen.
根据本实用新型实施例的触摸输入装置1000中，基板300与例如触摸输入装置1000的最外廓机构即壳体320一起起到包围容纳用于触摸输入装置1000工作的电路基板及/或电池的装配空间310等的外壳(housing)的功能。此时，用于触摸输入装置1000工作的电路基板上可以装配有作为主板(main board)的中央处理单元即CPU(centralprocessing unit)或应用处理器(application processor；AP)等。基板300使得显示模块200与用于触摸输入装置1000工作的电路基板及/或电池相分离，可以切断显示模块200发生的电噪声。In the touch input device 1000 according to the embodiment of the present utility model, the substrate 300 together with, for example, the outermost mechanism of the touch input device 1000, that is, the housing 320, serves to surround and accommodate the circuit substrate and/or battery for the operation of the touch input device 1000. The housing (housing) function of the assembly space 310 and the like. At this time, a central processing unit (CPU) or an application processor (application processor; AP) as a main board may be mounted on the circuit substrate for the operation of the touch input device 1000 . The substrate 300 separates the display module 200 from the circuit substrate and/or battery used for the operation of the touch input device 1000 , and can cut off electrical noise generated by the display module 200 .
在触摸输入装置1000中，触摸感测板100或前面覆盖层可以大于显示模块200、基板300及装配空间310，因此可以形成壳体320使得壳体320与触摸感测板100一起包围显示模块200、基板300及电路基板。In the touch input device 1000, the touch sensing board 100 or the front cover layer can be larger than the display module 200, the substrate 300 and the assembly space 310, so the housing 320 can be formed so that the housing 320 surrounds the display module 200 together with the touch sensing board 100 , the substrate 300 and the circuit substrate.
根据本实用新型第二实施形态的触摸输入装置1000可以通过触摸感测板100检测触摸位置，通过在显示模块200与基板300之间配置压力检测模块400检测触摸压力。此时，触摸感测板100可以位于显示模块200的内部或外部。压力检测模块400包括例如由气隙(air gap)构成的隔离层420，此部分将参照图5至图7b进行详细说明。根据实施例，隔离层420可以由冲击吸收物质构成。根据实施例，隔离层420可以用介电物质(dielectric material)填充。The touch input device 1000 according to the second embodiment of the present invention can detect the touch position through the touch sensor board 100 , and detect the touch pressure by disposing the pressure detection module 400 between the display module 200 and the substrate 300 . At this time, the touch sensing panel 100 may be located inside or outside the display module 200 . The pressure detection module 400 includes, for example, an isolation layer 420 formed of an air gap, and this part will be described in detail with reference to FIGS. 5 to 7 b. According to an embodiment, the isolation layer 420 may be composed of a shock absorbing substance. According to an embodiment, the isolation layer 420 may be filled with a dielectric material.
图5为根据本实用新型第二实施形态的触摸输入装置的立体图。如图5所示，根据本实用新型实施例的触摸输入装置1000的压力检测模块400可包括使显示模块200与基板300相隔的隔离层420及位于隔离层420内的电极450及460。以下，为了与触摸感测板100中的电极明确区分，将用于检测压力的电极450、460称为压力电极450、460。此时，压力电极450、460位于显示板的背面，而不是位于其前面，因此不仅可以由透明物质形成，还可以由非透明物质形成。Fig. 5 is a perspective view of a touch input device according to a second embodiment of the present invention. As shown in FIG. 5 , the pressure detection module 400 of the touch input device 1000 according to the embodiment of the present invention may include an isolation layer 420 separating the display module 200 from the substrate 300 and electrodes 450 and 460 inside the isolation layer 420 . Hereinafter, the electrodes 450 and 460 for detecting pressure are referred to as pressure electrodes 450 and 460 in order to clearly distinguish them from the electrodes in the touch sensor panel 100 . At this time, the pressure electrodes 450 and 460 are located on the back of the display panel instead of in front thereof, so they can be formed not only of transparent materials, but also of non-transparent materials.
此时，为保持隔离层420，可以沿基板300上部边缘形成具有预定厚度的粘接带440。图5显示粘接带440形成于基板300的所有边缘(例如，四角形的四个边缘)的情况，但粘接带440也可以仅形成于基板300边缘中的至少一部分(例如，四角形的三个边缘)。实施例中，粘接带440也可以形成于基板300的上部面或显示模块200的下部面。为了使基板300与显示模块200具有相同电位，粘接带440可以是导电带。另外，粘接带440可以是双面胶带。本实用新型的实施例中，粘接带440可以由无弹性的物质构成。本实用新型的实施例中，向显示模块200施加压力时显示模块200能够弯曲，因此即使粘接带440不随压力发生形变也能够检测出触摸压力的大小。At this time, in order to maintain the isolation layer 420 , an adhesive tape 440 having a predetermined thickness may be formed along the upper edge of the substrate 300 . 5 shows the situation where the adhesive tape 440 is formed on all edges of the substrate 300 (for example, four edges of a quadrangular shape), but the adhesive tape 440 may also be formed on at least a part of the edges of the substrate 300 (for example, three corners of a quadrangular shape). edge). In an embodiment, the adhesive tape 440 may also be formed on the upper surface of the substrate 300 or the lower surface of the display module 200 . In order to make the substrate 300 and the display module 200 have the same potential, the adhesive tape 440 may be a conductive tape. In addition, the adhesive tape 440 may be a double-sided adhesive tape. In an embodiment of the present invention, the adhesive tape 440 may be made of inelastic material. In the embodiment of the present invention, the display module 200 can be bent when pressure is applied to the display module 200 , so even if the adhesive tape 440 does not deform with the pressure, the magnitude of the touch pressure can be detected.
图6a为根据本实用新型第一实施例的包括压力电极图形的触摸输入装置的剖面图。如图6a所示，根据本实用新型第一实施例的压力电极450、460可以在隔离层420内形成于基板300上。Fig. 6a is a cross-sectional view of a touch input device including pressure electrode patterns according to the first embodiment of the present invention. As shown in FIG. 6 a , pressure electrodes 450 , 460 according to the first embodiment of the present invention may be formed on the substrate 300 within the isolation layer 420 .
用于检测压力的压力电极可包括第一压力电极450与第二压力电极460。此时，第一压力电极450与第二压力电极460中的任意一个电极可以是驱动电极，其余一个可以是接收电极。可以向驱动电极施加驱动信号并通过接收电极获得感测信号。施加电压时，第一压力电极450与第二压力电极460之间可以生成互电容。The pressure electrodes for detecting pressure may include a first pressure electrode 450 and a second pressure electrode 460 . At this time, any one of the first pressure electrode 450 and the second pressure electrode 460 may be a driving electrode, and the other one may be a receiving electrode. Driving signals can be applied to the driving electrodes and sensing signals can be obtained through the receiving electrodes. When a voltage is applied, mutual capacitance may be generated between the first pressure electrode 450 and the second pressure electrode 460 .
图6b为图6a所示触摸输入装置受到压力的情况的剖面图。为遮蔽噪声，显示模块200的下部面可以具有接地(ground)电位。通过客体500向触摸感测板100的表面施加压力的情况下，触摸感测板100及显示模块200可以发生弯曲。因此接地电位面与压力电极450、460的图形之间的距离d可以减小到d′。这种情况下随着所述距离d减小，边缘电容被显示模块200的下部面吸收，因此第一压力电极450与第二压力电极460之间的互电容可以减小。因此，可以从通过接收电极获得的感测信号中获取互电容的减小量算出触摸压力的大小。Fig. 6b is a cross-sectional view of the touch input device shown in Fig. 6a under pressure. In order to shield noise, the lower surface of the display module 200 may have a ground potential. When the object 500 exerts pressure on the surface of the touch-sensing panel 100 , the touch-sensing panel 100 and the display module 200 may bend. The distance d between the ground potential plane and the pattern of the pressure electrodes 450, 460 can thus be reduced to d'. In this case, as the distance d decreases, the fringe capacitance is absorbed by the lower surface of the display module 200 , so the mutual capacitance between the first pressure electrode 450 and the second pressure electrode 460 can be reduced. Therefore, the amount of reduction of the mutual capacitance can be obtained from the sensing signal obtained by the receiving electrodes to calculate the magnitude of the touch pressure.
根据本实用新型实施例的触摸输入装置1000中，显示模块200在施加压力的触摸下能够发生弯曲。显示模块200弯曲时可以在触摸位置发生最大变形。根据实施例，显示模块200弯曲时发生最大变形的位置与所述触摸位置可以不一致，但显示模块200至少在所述触摸位置发生弯曲。例如，触摸位置靠近显示模块200的外廓及边缘部分等位置的情况下，显示模块200弯曲程度最大的位置与触摸位置可能不相同，但显示模块200至少在所述触摸位置发生弯曲。In the touch input device 1000 according to the embodiment of the present invention, the display module 200 can be bent under the touch with applied pressure. The largest deformation may occur at the touched position when the display module 200 is bent. According to an embodiment, the position where the display module 200 is most deformed when it is bent may not coincide with the touched position, but the display module 200 is bent at least at the touched position. For example, when the touch position is close to the outline and edge of the display module 200, the position where the display module 200 bends the most may be different from the touch position, but the display module 200 bends at least at the touch position.
此时为遮蔽噪声，基板300的上部面也可以具有接地电位。因此，为防止基板300与压力电极450、460发生短路(short circuit)，压力电极450、460可以形成于绝缘层470上。图8显示根据本实用新型实施例的压力电极的附着结构。参照图8中(a)，压力电极450、460形成于位于基板300上的第一绝缘层470。并且根据实施例，可以将形成有压力电极450、460的第一绝缘层470附着在基板300上。根据实施例，可以将具有对应于压力电极图形的贯通孔的掩模(mask)配置在基板300或基板300上的第一绝缘层470上后喷射导电喷剂(spray)形成压力电极。In this case, in order to shield noise, the upper surface of the substrate 300 may have a ground potential. Therefore, in order to prevent a short circuit between the substrate 300 and the pressure electrodes 450 , 460 , the pressure electrodes 450 , 460 may be formed on the insulating layer 470 . Fig. 8 shows the attachment structure of the pressure electrode according to the embodiment of the present invention. Referring to FIG. 8( a ), the pressure electrodes 450 and 460 are formed on the first insulating layer 470 on the substrate 300 . And according to an embodiment, the first insulating layer 470 formed with the pressure electrodes 450 , 460 may be attached on the substrate 300 . According to an embodiment, a mask having through holes corresponding to the patterns of the pressure electrodes may be disposed on the substrate 300 or the first insulating layer 470 on the substrate 300 and then conductive spray (spray) may be sprayed to form the pressure electrodes.
并且，在显示模块200的下部面具有接地电位的情况下，为防止位于基板300上的压力电极450、460与显示模块200发生短路，可用另外的第二绝缘层471盖住压力电极450、460。并且，可以用另外的第二绝缘层471盖住形成于第一绝缘层470上的压力电极450、460后一体附着到基板300形成压力检测模块400。Moreover, when the lower surface of the display module 200 has a ground potential, in order to prevent the pressure electrodes 450, 460 on the substrate 300 from short-circuiting with the display module 200, another second insulating layer 471 can be used to cover the pressure electrodes 450, 460 . Moreover, another second insulating layer 471 may be used to cover the pressure electrodes 450 and 460 formed on the first insulating layer 470 and then integrally attached to the substrate 300 to form the pressure detection module 400 .
参照图8中(a)说明的压力电极450、460的附着结构及方法还可以适用于压力电极450、460附着于显示模块200的情况。压力电极450、460附着于显示模块200的情况将参照图6c进一步详细说明。The attachment structure and method of the pressure electrodes 450 and 460 described with reference to (a) of FIG. The attachment of the pressure electrodes 450, 460 to the display module 200 will be further described in detail with reference to FIG. 6c.
并且，根据触摸输入装置1000的种类及/或实现方式，附着有压力电极450、460的基板300或显示模块200可以无接地电位或仅有弱接地电位。这种情况下，根据本实用新型实施例的触摸输入装置1000还可以包括设置于基板300或显示模块200与绝缘层470之间的接地电极(ground electrode：未示出)。根据实施例，接地电极与基板300或显示模块200之间还可以包括其他绝缘层(未示出)。此时，接地电极(未示出)能够防止作为压力电极的第一压力电极450与第二压力电极460之间生成的电容过大。Moreover, according to the type and/or implementation of the touch input device 1000 , the substrate 300 or the display module 200 attached with the pressure electrodes 450 , 460 may have no ground potential or only a weak ground potential. In this case, the touch input device 1000 according to the embodiment of the present invention may further include a ground electrode (ground electrode: not shown) disposed between the substrate 300 or the display module 200 and the insulating layer 470 . According to an embodiment, other insulating layers (not shown) may be further included between the ground electrode and the substrate 300 or the display module 200 . At this time, the ground electrode (not shown) can prevent excessive capacitance generated between the first pressure electrode 450 and the second pressure electrode 460 as pressure electrodes.
以上说明的压力电极450、460的形成及粘接方法可同样适用于以下实施例。The formation and bonding methods of the pressure electrodes 450 and 460 described above are also applicable to the following embodiments.
图6c为根据本实用新型第二实施例的包括压力电极的触摸输入装置的剖面图。虽然第一实施例显示压力电极450、460形成于基板300上的情况，但压力电极450、460也可以形成于显示模块200的下部面。此时，基板300可以具有接地电位。因此，对触摸感测板100的触摸表面进行触摸的情况下基板300与压力电极450、460之间的距离d减小，从而能够引起第一压力电极450与第二压力电极460之间互电容的变化。Fig. 6c is a cross-sectional view of a touch input device including pressure electrodes according to a second embodiment of the present invention. Although the first embodiment shows the situation that the pressure electrodes 450 , 460 are formed on the substrate 300 , the pressure electrodes 450 , 460 may also be formed on the lower surface of the display module 200 . At this time, the substrate 300 may have a ground potential. Therefore, when the touch surface of the touch sensor panel 100 is touched, the distance d between the substrate 300 and the pressure electrodes 450, 460 decreases, thereby causing mutual capacitance between the first pressure electrode 450 and the second pressure electrode 460. The change.
图6d显示根据本实用新型第一实施例的压力电极图形。图6d显示第一压力电极450与第二压力电极460形成于基板300上的情况。第一压力电极450与第二压力电极460之间的电容可以随显示模块200的下部面与压力电极450、460之间的距离变化。Fig. 6d shows the pressure electrode pattern according to the first embodiment of the present invention. FIG. 6 d shows the situation that the first pressure electrode 450 and the second pressure electrode 460 are formed on the substrate 300 . The capacitance between the first pressure electrode 450 and the second pressure electrode 460 may vary with the distance between the lower surface of the display module 200 and the pressure electrodes 450 , 460 .
图6e显示根据本实用新型第二实施例的压力电极图形。图6e显示压力电极450、460形成于显示模块200的下部面上的情况。Fig. 6e shows the pressure electrode pattern according to the second embodiment of the present invention. FIG. 6 e shows a situation where pressure electrodes 450 , 460 are formed on the lower surface of the display module 200 .
图6f及图6g显示能够适用于本实用新型实施例的压力电极450、460的图形。通过第一压力电极450与第二压力电极460之间的互电容变化检测触摸压力的大小时，有必要形成第一压力电极450与第二压力电极460的图形使得生成用于提高检测精确度的必要的电容范围。第一压力电极450与第二压力电极460之间的相对面积越大或长度越长时，生成的电容大小可能越大。因此，可以根据必要的电容范围调节设计第一压力电极450与第二压力电极460之间相对的面积大小、长度及形状等。图6f及图6g为第一压力电极450与第二压力电极460形成于相同层上的情况，显示了形成的压力电极中彼此相对的第一压力电极450与第二压力电极460的长度加长的情况。Fig. 6f and Fig. 6g show patterns of pressure electrodes 450, 460 applicable to embodiments of the present invention. When detecting the magnitude of the touch pressure through the mutual capacitance change between the first pressure electrode 450 and the second pressure electrode 460, it is necessary to form a pattern of the first pressure electrode 450 and the second pressure electrode 460 to generate a pattern for improving the detection accuracy. necessary capacitance range. When the relative area between the first pressure electrode 450 and the second pressure electrode 460 is larger or the length is longer, the generated capacitance may be larger. Therefore, the size, length and shape of the relative area between the first pressure electrode 450 and the second pressure electrode 460 can be adjusted and designed according to the necessary capacitance range. Fig. 6f and Fig. 6g show the situation that the first piezo electrode 450 and the second piezo electrode 460 are formed on the same layer, showing that the lengths of the first piezo electrode 450 and the second piezo electrode 460 opposite to each other in the formed piezo electrodes are lengthened. Condition.
第一实施例及第二实施例中，第一压力电极450与第二压力电极460形成于相同的层，但根据实施例，第一压力电极450与第二压力电极460也可以形成于不同的层。图8中(b)显示第一压力电极450与第二压力电极460形成于不同层时的附着结构。如图8中(b)所示，第一压力电极450形成于第一绝缘层470上，第二压力电极460可形成于位于第一压力电极450上的第二绝缘层471上。根据实施例，可以用第三绝缘层472盖住第二压力电极460。此时由于第一压力电极450与第二压力电极460位于不同的层，因此可以设置成相重叠(overlap)。例如，第一压力电极450与第二压力电极460可以设置成近似于参照图1说明的触摸感测板100中的M×N结构即驱动电极TX与接收电极RX的图形。此时，M及N可以是1以上的自然数。In the first embodiment and the second embodiment, the first piezoelectric electrode 450 and the second piezoelectric electrode 460 are formed on the same layer, but according to the embodiment, the first piezoelectric electrode 450 and the second piezoelectric electrode 460 may also be formed on different layers. layer. (b) of FIG. 8 shows the adhesion structure when the first pressure electrode 450 and the second pressure electrode 460 are formed in different layers. As shown in FIG. 8( b ), the first pressure electrode 450 is formed on the first insulating layer 470 , and the second pressure electrode 460 may be formed on the second insulating layer 471 on the first pressure electrode 450 . According to an embodiment, the second pressure electrode 460 may be covered with a third insulating layer 472 . At this time, since the first pressure electrode 450 and the second pressure electrode 460 are located in different layers, they can be arranged to overlap. For example, the first pressure electrodes 450 and the second pressure electrodes 460 may be arranged in a pattern similar to the M×N structure of the touch sensor panel 100 described with reference to FIG. 1 , that is, the driving electrodes TX and the receiving electrodes RX. In this case, M and N may be a natural number of 1 or more.
第一实施例中举例了通过第一压力电极450与第二压力电极460之间的互电容变化检测触摸压力。但压力电极450、460可以只包括第一压力电极450与第二压力电极460中任意一种压力电极，这种情况下可通过检测一种压力电极与接地层(显示模块200或基板300)之间的电容变化检测触摸压力的大小。In the first embodiment, it is exemplified that the touch pressure is detected through the mutual capacitance change between the first pressure electrode 450 and the second pressure electrode 460 . However, the pressure electrodes 450 and 460 may only include any one of the first pressure electrode 450 and the second pressure electrode 460. The capacitance change between them detects the size of the touch pressure.
例如，图6a中的压力电极可以只包括第一压力电极450，此时可以通过显示模块200与第一压力电极450之间的距离变化引起的第一压力电极450与显示模块200之间的电容变化检测触摸压力的大小。由于触摸压力增大时距离d减小，因此显示模块200与第一压力电极450之间的电容可以随着触摸压力的增大而增大。这可同样适用于图6c相关的实施例。此时，压力电极无需为了提高互电容变化量检测精确度而具有梳齿形状或三叉形状，可以具有如图7b所示板(例如，四角板)形状。For example, the pressure electrode in FIG. 6a may only include the first pressure electrode 450. At this time, the capacitance between the first pressure electrode 450 and the display module 200 may be caused by the change of the distance between the display module 200 and the first pressure electrode 450. Changes the size of the detected touch pressure. Since the distance d decreases when the touch pressure increases, the capacitance between the display module 200 and the first pressure electrode 450 may increase as the touch pressure increases. The same applies to the embodiment associated with Fig. 6c. In this case, the pressure electrode does not need to have a comb-tooth shape or a trident shape in order to improve the detection accuracy of mutual capacitance variation, but may have a plate (eg, a square plate) shape as shown in FIG. 7 b .
图8中(c)显示压力电极仅包括第一压力电极450时的附着结构。如图8中(c)所示，第一压力电极450可形成于位于基板300或显示模块200上的第一绝缘层470上。并且根据实施例，可以用第二绝缘层471盖住第一压力电极450。(c) in FIG. 8 shows the attachment structure when the pressure electrode only includes the first pressure electrode 450 . As shown in (c) of FIG. 8 , the first pressure electrode 450 may be formed on the first insulating layer 470 on the substrate 300 or the display module 200 . And according to an embodiment, the first pressure electrode 450 may be covered with the second insulating layer 471 .
图7a为根据本实用新型第三实施例的包括压力电极的触摸输入装置的剖面图。根据本实用新型第三实施例的压力电极450、460可以在隔离层420内形成于基板300的上部面及显示模块200的下部面上。Fig. 7a is a cross-sectional view of a touch input device including pressure electrodes according to a third embodiment of the present invention. The pressure electrodes 450 and 460 according to the third embodiment of the present invention may be formed on the upper surface of the substrate 300 and the lower surface of the display module 200 within the isolation layer 420 .
用于检测压力的压力电极图形可包括第一压力电极450与第二压力电极460。此时，第一压力电极450与第二压力电极460中任意一个电极可以形成于基板300上，其余一个电极可以形成于显示模块200的下部面上。图7a显示第一压力电极450形成于基板300上，第二压力电极460形成于显示模块200的下部面上。The pressure electrode pattern for detecting pressure may include a first pressure electrode 450 and a second pressure electrode 460 . At this time, any one of the first pressure electrode 450 and the second pressure electrode 460 may be formed on the substrate 300 , and the other electrode may be formed on the lower surface of the display module 200 . FIG. 7 a shows that the first pressure electrode 450 is formed on the substrate 300 , and the second pressure electrode 460 is formed on the lower surface of the display module 200 .
通过客体500向触摸感测板100的表面施加压力的情况下，触摸感测板100及显示模块200可以发生弯曲。因此第一压力电极450与第二压力电极460之间的距离d能够减小。这种情况下，随着所述距离d减小，第一压力电极450与第二压力电极460之间的互电容可以增大。因此可以从通过接收电极获得的感测信号中获取互电容的增加量以算出触摸压力的大小。When the object 500 exerts pressure on the surface of the touch-sensing panel 100 , the touch-sensing panel 100 and the display module 200 may bend. Therefore, the distance d between the first pressure electrode 450 and the second pressure electrode 460 can be reduced. In this case, as the distance d decreases, the mutual capacitance between the first pressure electrode 450 and the second pressure electrode 460 may increase. Therefore, the increase amount of the mutual capacitance can be obtained from the sensing signal obtained by the receiving electrodes to calculate the magnitude of the touch pressure.
图7b显示根据本实用新型第三实施例的压力电极图形。图7b显示第一压力电极450形成于显示模块200的下部面，第二压力电极460形成于基板300的上部面。如图7b所示，第一压力电极450与第二压力电极460形成于不同的层，因此不同于第一实施例及第二实施例，第一压力电极450及第二压力电极460无需构成梳齿形状或三叉形状，可以是板形状(例如，四角板形状)。Fig. 7b shows the pressure electrode pattern according to the third embodiment of the present invention. FIG. 7 b shows that the first pressure electrode 450 is formed on the lower surface of the display module 200 , and the second pressure electrode 460 is formed on the upper surface of the substrate 300 . As shown in Figure 7b, the first pressure electrode 450 and the second pressure electrode 460 are formed on different layers, so unlike the first embodiment and the second embodiment, the first pressure electrode 450 and the second pressure electrode 460 do not need to form a comb A tooth shape or a trident shape, may be a plate shape (for example, a quadrangular plate shape).
图8中(d)显示第一压力电极450附着于基板300上，第二压力电极460附着于显示模块200时的附着结构。如图8中(d)所示，第一压力电极450位于形成于基板300上的第一绝缘层470-2上，第一压力电极450可以被第二绝缘层471-2盖住。并且，第二压力电极460位于形成于显示模块200的下部面上的第一绝缘层470-1上，第二压力电极460可以被第二绝缘层471-1盖住。(d) of FIG. 8 shows the attachment structure when the first pressure electrode 450 is attached to the substrate 300 and the second pressure electrode 460 is attached to the display module 200 . As shown in (d) of FIG. 8 , the first pressure electrode 450 is located on the first insulating layer 470 - 2 formed on the substrate 300 , and the first pressure electrode 450 may be covered by the second insulating layer 471 - 2 . Also, the second pressure electrode 460 is located on the first insulating layer 470-1 formed on the lower surface of the display module 200, and the second pressure electrode 460 may be covered by the second insulating layer 471-1.
如以上结合图8中(a)进行说明，附着有压力电极450、460的基板300或显示模块200无接地电位或仅有弱接地电位的情况下，与图8中(a)至图8中(d)所示第一绝缘层470、470-1、470-2之间还可以包括接地电极(未示出)。此时，接地电极(未示出)与附着有压力电极450、460的基板300或显示模块200之间还可以包括另外的绝缘层(未示出)。As described above in conjunction with (a) in FIG. 8, when the substrate 300 or the display module 200 with the pressure electrodes 450, 460 attached has no ground potential or only has a weak ground potential, the (d) may further include a ground electrode (not shown) between the first insulating layers 470 , 470 - 1 , and 470 - 2 . At this time, another insulating layer (not shown) may be included between the ground electrode (not shown) and the substrate 300 or the display module 200 on which the pressure electrodes 450 , 460 are attached.
如上所述，根据本实用新型实施例的触摸输入装置1000感测压力电极450、460发生的电容变化。因此，需要向第一压力电极450与第二压力电极460中的驱动电极施加驱动信号，应该从接收电极获取感测信号并根据电容的变化量算出触摸压力。根据实施例，还可以包括用于压力检测模块400工作的触摸感测IC。这种情况下如图1所示，重复包括类似于驱动部120、感测部110及控制部130的构成，因此发生触摸输入装置1000的面积及体积增大的问题。As mentioned above, the touch input device 1000 according to the embodiment of the present invention senses the capacitance change of the pressure electrodes 450 , 460 . Therefore, a driving signal needs to be applied to the driving electrodes of the first pressure electrode 450 and the second pressure electrode 460 , and the sensing signal should be obtained from the receiving electrodes and the touch pressure should be calculated according to the variation of capacitance. According to an embodiment, a touch sensing IC for the operation of the pressure detection module 400 may be further included. In this case, as shown in FIG. 1 , similar configurations including the driving unit 120 , the sensing unit 110 , and the control unit 130 are repeated, and thus the area and volume of the touch input device 1000 increase.
根据实施例，压力检测模块400可以通过用于触摸感测板100工作的触摸检测装置施加驱动信号并接收感测信号以检测触摸压力。以下假设第一压力电极450为驱动电极，第二压力电极460为接收电极并进行说明。According to an embodiment, the pressure detection module 400 may apply a driving signal and receive a sensing signal to detect a touch pressure through a touch detection device for operating the touch sensing panel 100 . In the following, it is assumed that the first pressure electrode 450 is a driving electrode, and the second pressure electrode 460 is a receiving electrode for description.
在此，根据本实用新型实施例的触摸输入装置1000中的第一压力电极450从驱动部120接收驱动信号，第二压力电极460可以将感测信号发送给感测部110。控制部130可以使得扫描触摸感测板100的同时扫描压力检测模块400，或者，控制部130可以生成控制信号使得分时并在第一时间区间扫描触摸感测板100，在不同于第一时间区间的第二时间区间扫描压力检测模块400。Here, the first pressure electrode 450 in the touch input device 1000 according to the embodiment of the present invention receives a driving signal from the driving part 120 , and the second pressure electrode 460 can send a sensing signal to the sensing part 110 . The control unit 130 can scan the pressure detection module 400 while scanning the touch-sensing panel 100, or the control unit 130 can generate a control signal so that the touch-sensing panel 100 is time-divided and scanned in the first time interval, different from the first time interval. The second time interval of the interval scans the pressure detection module 400 .
因此，根据本实用新型实施例中第一压力电极450与第二压力电极460应与驱动部120及/或感测部110电连接。此时，用于触摸感测板100的触摸检测装置作为触摸感测IC 150，通常形成于触摸感测板100的一端或与触摸感测板100形成于同一平面上。压力电极450、460的图形与触摸感测板100的触摸检测装置可通过任意方法电连接。例如，压力电极450、460的图形可以利用显示模块200中的第二PCB 210，通过连接器(connector)连接于触摸检测装置。例如图5所示，分别从第一压力电极450与第二压力电极460电延长的导电线路451及461可通过第二PCB 210等电连接至触摸感测IC150。Therefore, according to the embodiment of the present invention, the first pressure electrode 450 and the second pressure electrode 460 should be electrically connected to the driving part 120 and/or the sensing part 110 . At this time, a touch detection device for the touch sensing board 100 as the touch sensing IC 150 is generally formed at one end of the touch sensing board 100 or on the same plane as the touch sensing board 100 . The patterns of the pressure electrodes 450 and 460 and the touch detection device of the touch sensor panel 100 can be electrically connected by any method. For example, the patterns of the pressure electrodes 450 and 460 can utilize the second PCB 210 in the display module 200 to be connected to the touch detection device through a connector. For example, as shown in FIG. 5 , the conductive lines 451 and 461 electrically extended from the first pressure electrode 450 and the second pressure electrode 460 respectively can be electrically connected to the touch sensing IC 150 through the second PCB 210 and the like.
图9a及图9b显示根据本实用新型第二实施例的压力电极的附着方法。图9a及图9b显示根据本实用新型实施例的压力电极450、460附着于显示模块200下部面的情况。图9a及图9b示出显示模块200下部面中局部装配有用于显示板工作的电路的第二PCB 210。9a and 9b show the attachment method of the pressure electrode according to the second embodiment of the present invention. FIG. 9a and FIG. 9b show the situation that the pressure electrodes 450 and 460 are attached to the lower surface of the display module 200 according to the embodiment of the present invention. Figures 9a and 9b show the second PCB 210 in the lower face of the display module 200 partially fitted with circuits for the operation of the display panel.
图9a显示压力电极450、460的图形附着于显示模块200的下部面使得第一压力电极450与第二压力电极460连接于显示模块200的第二PCB 210一端的情况。其中，图9a显示第一压力电极450与第二压力电极460制作形成于绝缘层470上的情况。压力电极450、460的图形可以形成于绝缘层470上作为一体型的薄板(sheet)附着在显示模块200的下部面。第二PCB 210上可以印刷有导电图形，以使得能够将压力电极450、460的图形电连接至触摸感测IC 150等必要构件。此部分将参照图10a至图10c进行说明。9 a shows the pattern of pressure electrodes 450 , 460 attached to the lower surface of the display module 200 such that the first pressure electrode 450 and the second pressure electrode 460 are connected to one end of the second PCB 210 of the display module 200 . Wherein, FIG. 9 a shows the situation that the first pressure electrode 450 and the second pressure electrode 460 are manufactured and formed on the insulating layer 470 . The patterns of the pressure electrodes 450 and 460 may be formed on the insulating layer 470 as an integral sheet attached to the lower surface of the display module 200 . Conductive patterns may be printed on the second PCB 210 so that the patterns of the pressure electrodes 450 , 460 can be electrically connected to necessary components such as the touch sensing IC 150 . This part will be described with reference to Figures 10a to 10c.
图9b显示第一压力电极450与第二压力电极460一体形成于显示模块200的第二PCB 210的情况。例如，制作显示模块200的第二PCB 210时从第二PCB上分割预定面积并预先印刷用于显示板工作的电路及对应于第一压力电极450与第二压力电极460的图形。第二PCB 210上可以印刷有将第一压力电极450及第二压力电极460电连接至触摸感测IC 150等必要构成的导电图形。FIG. 9 b shows the situation that the first pressure electrode 450 and the second pressure electrode 460 are integrally formed on the second PCB 210 of the display module 200 . For example, when manufacturing the second PCB 210 of the display module 200 , a predetermined area is divided from the second PCB, and circuits for display panel operation and patterns corresponding to the first pressure electrodes 450 and the second pressure electrodes 460 are pre-printed. Conductive patterns that electrically connect the first pressure electrode 450 and the second pressure electrode 460 to the touch sensing IC 150 and other necessary components may be printed on the second PCB 210 .
图10a至图10c显示根据本实用新型第二实施例的将压力电极连接到触摸感测IC150的方法。图10a至图10c显示触摸感测板100位于显示模块200外部的情况，显示触摸感测板100的触摸检测装置集成于装配到用于触摸感测板100的第一PCB 160上的触摸感测IC 150的情况。10a to 10c show a method of connecting a pressure electrode to a touch sensing IC 150 according to a second embodiment of the present invention. 10a to 10c show the case where the touch sensing board 100 is located outside the display module 200, showing that the touch detection device of the touch sensing board 100 is integrated into the touch sensing board 160 assembled to the first PCB 160 for the touch sensing board 100. The case of IC 150.
图10a显示附着于显示模块200的压力电极450、460通过第一连接器121连接至触摸感测IC 150的情况。如图10a所示，智能手机等移动通信装置中触摸感测IC 150通过第一连接器(connector)121连接在用于显示模块200的第二PCB 210。第二PCB 210可通过第二连接器221电连接于主板。因此，触摸感测IC 150可通过第一连接器121及第二连接器221与用于触摸输入装置1000工作的CPU或AP收发信号。FIG. 10 a shows the situation that the pressure electrodes 450 , 460 attached to the display module 200 are connected to the touch sensing IC 150 through the first connector 121 . As shown in FIG. 10 a , the touch sensing IC 150 in a mobile communication device such as a smart phone is connected to the second PCB 210 for the display module 200 through a first connector 121 . The second PCB 210 can be electrically connected to the main board through the second connector 221 . Therefore, the touch sensing IC 150 can transmit and receive signals with the CPU or the AP for the operation of the touch input device 1000 through the first connector 121 and the second connector 221 .
此时，图10a显示压力电极450通过图9b所示方式附着于显示模块200的情况，但也可以适用通过如图9a所示方式附着的情况。第二PCB 210可以形成有将压力电极450、460通过第一连接器121电连接到触摸感测IC 150的导电性图形。At this time, FIG. 10 a shows the situation that the pressure electrode 450 is attached to the display module 200 in the manner shown in FIG. 9 b , but the situation in which the pressure electrode 450 is attached in the manner shown in FIG. 9 a can also be applied. The second PCB 210 may be formed with a conductive pattern electrically connecting the pressure electrodes 450 , 460 to the touch sensing IC 150 through the first connector 121 .
图10b显示附着于显示模块200的压力电极450、460通过第三连接器473连接到触摸感测IC 150的情况。图10b中，压力电极450、460通过第三连接器473连接到用于触摸输入装置1000工作的主板，然后可以通过第二连接器221及第一连接器121连接到触摸感测IC 150。此时，压力电极450、460可以印刷在与第二PCB 210分离的另外的PCB211上。或者根据实施例，可以在绝缘层470上形成压力电极450、460的图形，从压力电极450、460延长导电线路等并通过第三连接器473等连接至主板。FIG. 10 b shows the situation that the pressure electrodes 450 , 460 attached to the display module 200 are connected to the touch sensing IC 150 through the third connector 473 . In FIG. 10 b , the pressure electrodes 450 , 460 are connected to the main board for the touch input device 1000 through the third connector 473 , and then can be connected to the touch sensing IC 150 through the second connector 221 and the first connector 121 . At this time, the pressure electrodes 450 , 460 may be printed on another PCB 211 separated from the second PCB 210 . Or according to an embodiment, patterns of the pressure electrodes 450 and 460 may be formed on the insulating layer 470 , conductive lines and the like are extended from the pressure electrodes 450 and 460 and connected to the main board through the third connector 473 and the like.
图10c显示压力电极450、460的图形通过第四连接器474直接连接到触摸感测IC 150的情况。图10c中，压力电极450、460可以通过第四连接器474连接到第一PCB 160。第一PCB 160上可以印刷有从第四连接器474电连接至触摸感测IC 150的导电图形。因此，压力电极450、460可以通过第四连接器474电连接至触摸感测IC 150。此时，压力电极450、460可以印刷在与第二PCB 210分离的另外的PCB 211上。第二PCB 210与另外的PCB 211可以通过绝缘防止彼此短路。或根据实施例，可以在绝缘层470上形成压力电极450、460，从压力电极450、460延长导电线路等并通过第四连接器474连接至第一PCB 160。FIG. 10 c shows the situation where the pattern of pressure electrodes 450 , 460 is directly connected to the touch-sensing IC 150 through the fourth connector 474 . In FIG. 10 c , the pressure electrodes 450 , 460 may be connected to the first PCB 160 through a fourth connector 474 . A conductive pattern electrically connected from the fourth connector 474 to the touch sensing IC 150 may be printed on the first PCB 160 . Accordingly, the pressure electrodes 450 , 460 may be electrically connected to the touch sensing IC 150 through the fourth connector 474 . At this time, the pressure electrodes 450 , 460 may be printed on another PCB 211 separated from the second PCB 210 . The second PCB 210 and the other PCB 211 may be prevented from being short-circuited to each other by insulation. Or according to an embodiment, the pressure electrodes 450 , 460 may be formed on the insulating layer 470 , conductive lines etc. are extended from the pressure electrodes 450 , 460 and connected to the first PCB 160 through the fourth connector 474 .
图10b及图10c的连接方法不仅适用于压力电极450、460形成于显示模块200下部面的情况，还适用于形成于基板300上的情况。The connection method shown in FIG. 10 b and FIG. 10 c is applicable not only to the case where the pressure electrodes 450 and 460 are formed on the lower surface of the display module 200 but also to the case where the pressure electrodes 450 and 460 are formed on the substrate 300 .
图10a至图10c假设触摸感测IC 150形成于第一PCB 160上的覆晶薄膜(chip on film；COF)结构并进行了说明，但这不过是举例说明，本实用新型还能够适用于触摸感测IC 150装配在触摸输入装置1000的装配空间310内主板上的载芯片板(chip on board；COB)结构。根据关于图10a至图10c的说明，本领域普通技术人员容易想到其他实施例的情况下也通过连接器连接压力电极450、460。10a to 10c assume that the touch-sensing IC 150 is formed on a chip-on-film (COF) structure on the first PCB 160 and illustrate, but this is just an example, the utility model can also be applied to touch The sensing IC 150 is mounted in a chip on board (COB) structure on a main board within the mounting space 310 of the touch input device 1000 . According to the description of FIG. 10a to FIG. 10c , those skilled in the art can easily imagine that the pressure electrodes 450 and 460 are also connected through connectors in other embodiments.
以上说明了第一压力电极450作为驱动电极构成一个信道，第二压力电极460作为接收电极构成一个信道的压力电极450、460。但这只是举例说明，实施例中驱动电极及接收电极可分别构成多个信道并在多重触摸(multi touch)时检测多重压力。It has been explained above that the first pressure electrode 450 serves as the driving electrode to form a channel, and the second pressure electrode 460 serves as the receiving electrode to form the pressure electrodes 450 and 460 of a channel. But this is just an example. In the embodiment, the driving electrodes and the receiving electrodes can respectively form multiple channels and detect multiple pressures during multi-touch.
图11a至图11c显示根据本实用新型实施例的压力电极构成多个信道的情况。图11a显示第一压力电极450-1、450-2与第二压力电极460-1、460-2分别构成两个信道的情况。图11b显示第一压力电极450-1、450-2构成两个信道，第二压力电极460构成一个信道的情况。图11c中显示第一压力电极450-1至450-5与第二压力电极460-1至460-5分别构成五个信道的情况。Fig. 11a to Fig. 11c show the situation that the pressure electrode according to the embodiment of the present invention constitutes a plurality of channels. Fig. 11a shows the situation that the first pressure electrodes 450-1, 450-2 and the second pressure electrodes 460-1, 460-2 constitute two channels respectively. Fig. 11b shows the situation that the first pressure electrodes 450-1, 450-2 form two channels, and the second pressure electrode 460 forms one channel. Fig. 11c shows the situation that the first pressure electrodes 450-1 to 450-5 and the second pressure electrodes 460-1 to 460-5 constitute five channels respectively.
图11a至图11c显示压力电极构成单个或多个信道的情况，可以通过多种方法使得压力电极构成单个或多个信道。图11a至图11c未示出压力电极450、460电连接于触摸感测IC 150的情况，但可以通过图10a至图10c及其他方法将压力电极450、460连接到触摸感测IC 150。Fig. 11a to Fig. 11c show the situation that the pressure electrodes form single or multiple channels, and the pressure electrodes can form single or multiple channels through various methods. 11a to 11c do not show the situation that the pressure electrodes 450, 460 are electrically connected to the touch sensing IC 150, but the pressure electrodes 450, 460 can be connected to the touch sensing IC 150 through FIGS. 10a to 10c and other methods.
图12为显示通过非导电性客体加压根据本实用新型实施形态的触摸输入装置1000的触摸表面中心部的实验得到的对应于客体克重(gram force)的电容变化量的坐标图。由图12可知，加压本实用新型实施例的触摸输入装置1000的触摸表面中心部的力越大，压力检测模块400中的压力电极450、460的图形的电容变化量越大。FIG. 12 is a graph showing the capacitance variation corresponding to the gram force of the object obtained through the experiment of pressing the center of the touch surface of the touch input device 1000 according to the embodiment of the present invention by a non-conductive object. It can be seen from FIG. 12 that the greater the force applied to the center of the touch surface of the touch input device 1000 in the embodiment of the present invention, the greater the capacitance change of the patterns of the pressure electrodes 450 and 460 in the pressure detection module 400 .
以上说明的压力检测模块400为电容式检测模块，但根据本实用新型实施例的触摸输入装置1000在压力检测模块400利用隔离层420及压力电极450、460的情况下可采用任意方式的压力检测模块。The pressure detection module 400 described above is a capacitive detection module, but the touch input device 1000 according to the embodiment of the present utility model can adopt any method of pressure detection under the condition that the pressure detection module 400 uses the isolation layer 420 and the pressure electrodes 450 and 460 module.
上述各实施例中所说明的特征、结构、效果等包含于本实用新型至少一个实施例，但并非仅限定于一个实施例。并且，各实施例中所示的特征、结构、效果等可以由实施例所属领域的普通技术人员对其他实施例进行组合或变形实施。因此，关于这些组合与变形的内容应视为包含于本实用新型的范围。The features, structures, effects, etc. described in the above embodiments are included in at least one embodiment of the present utility model, but are not limited to only one embodiment. Moreover, the features, structures, effects, etc. shown in each embodiment can be combined or modified in other embodiments by those skilled in the art to which the embodiment belongs. Therefore, the content about these combinations and modifications should be considered to be included in the scope of the present invention.
并且，以上以实施例为中心进行了说明，但这些不过是举例说明而已，并非对本实用新型进行限定，本实用新型所属领域的普通技术人员在不超出本实施例的本质特性的范围内，还可以进行以上未提及的多种变形及应用。例如，实施例中具体出现的各构成要素可变形实施。并且，有关这些变形与应用的差异点应视为包含于本实用新型的技术方案内。In addition, the above has been described centering on the embodiments, but these are just examples and not limiting the present invention. Those of ordinary skill in the art to which the present invention pertains can also use the present embodiment within the scope not exceeding the essential characteristics of the present embodiment. Various modifications and applications not mentioned above are possible. For example, each constituent element specifically presented in the embodiment may be implemented in a modified manner. Moreover, the differences related to these deformations and applications should be considered to be included in the technical solution of the present utility model.
产业上的可应用性Industrial Applicability
本实用新型能够提供一种不仅能够检测触摸屏上的触摸的位置，还能够检测触摸压力大小的包括显示模块的智能手机。The utility model can provide a smart mobile phone including a display module, which can not only detect the touched position on the touch screen, but also detect the magnitude of the touch pressure.
并且，本实用新型能够提供一种在不降低显示模块的清晰度(visibility)及光透过率的同时检测触摸位置及触摸压力大小的包括显示模块的智能手机。Moreover, the present invention can provide a smart phone including a display module that detects a touch position and a touch pressure without reducing the visibility and light transmittance of the display module.
| Application Number | Priority Date | Filing Date | Title |
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| KR1020140098917AKR101681305B1 (en) | 2014-08-01 | 2014-08-01 | Touch input device |
| KR10-2014-0098917 | 2014-08-01 | ||
| CN201590000041.9UCN207198825U (en) | 2014-08-01 | 2015-07-31 | smart phone |
| Application Number | Title | Priority Date | Filing Date |
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| CN201590000041.9UDivisionCN207198825U (en) | 2014-08-01 | 2015-07-31 | smart phone |
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| CN201620013377.5UExpired - LifetimeCN205486018U (en) | 2014-08-01 | 2015-07-31 | Electrode sheet |
| CN201620075484.0UExpired - LifetimeCN205540674U (en) | 2014-08-01 | 2015-07-31 | Touch input device |
| Application Number | Title | Priority Date | Filing Date |
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| CN201620075349.6UExpired - LifetimeCN206003066U (en) | 2014-08-01 | 2015-07-31 | Smart mobile phone |
| CN201620013377.5UExpired - LifetimeCN205486018U (en) | 2014-08-01 | 2015-07-31 | Electrode sheet |
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| CN106484188A (en)* | 2016-10-31 | 2017-03-08 | 厦门天马微电子有限公司 | A kind of touch-control display panel and pressure detection method |
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| CN110557963A (en)* | 2016-11-24 | 2019-12-10 | 希迪普公司 | Touch input device capable of detecting pressure suitable for display noise compensation |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
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| CX01 | Expiry of patent term | Granted publication date:20160831 |