技术领域technical field
本发明属于显示技术领域，具体涉及一种触控基板、显示面板及显示装置。The invention belongs to the field of display technology, and in particular relates to a touch substrate, a display panel and a display device.
背景技术Background technique
触摸屏因具有易操作性、直观性和灵活性等优点，已成为个人移动通讯设备和综合信息终端，如平板电脑、智能手机，以及超级笔记本电脑等主要人机交互手段。触摸屏根据不同的触控原理可分为电阻触摸屏、电容触摸屏、红外触摸屏和表面波(SAW)触摸屏等四种主要类型。其中，电容触摸屏具有多点触控的功能，反应时间快，使用寿命长和透过率较高，用户使用体验优越，同时随着工艺的逐步成熟，良品率得到显著提高，电容屏价格日益降低，目前已成为中小尺寸信息终端触控交互的主要技术。Due to its advantages of ease of operation, intuition and flexibility, the touch screen has become the main means of human-computer interaction for personal mobile communication devices and comprehensive information terminals, such as tablet computers, smart phones, and super notebook computers. Touch screens can be divided into four main types according to different touch principles: resistive touch screens, capacitive touch screens, infrared touch screens, and surface wave (SAW) touch screens. Among them, the capacitive touch screen has the function of multi-touch, fast response time, long service life and high transmittance, and the user experience is superior. At the same time, with the gradual maturity of the technology, the yield rate has been significantly improved, and the price of the capacitive screen has been reduced day by day. , has become the main technology for touch interaction of small and medium-sized information terminals.
图1例举了一种现有传统自容式In cell touch pattern(盒内触控图案)设计的俯视示意图，图中每一个大小为5*5mm的矩形图案即为一个触控单元1，它同时起到了TX(发送信号)和RX(接收信号)的作用，每个触控单元1通过触控信号线3与柔性线路板2绑定(FPCBonding)区驱动芯片(IC)的管脚(pin)相连接。触摸屏工作时，人手指的触摸会导致相应矩形触控单元1的自电容发生变化，驱动芯片捕捉到这一信号后，可根据该触控单元1电容的变化来判断手指的具体位置。Fig. 1 exemplifies a schematic top view of an existing traditional self-contained In cell touch pattern design, in which each rectangular pattern with a size of 5*5mm is a touch unit 1, which At the same time, it plays the role of TX (transmitting signal) and RX (receiving signal). Each touch unit 1 binds (FPCBonding) the pin (pin) of the chip (IC) to the flexible circuit board 2 through the touch signal line 3. ) are connected. When the touch screen is working, the touch of a human finger will cause the self-capacitance of the corresponding rectangular touch unit 1 to change. After the driver chip captures this signal, the specific position of the finger can be determined according to the change in the capacitance of the touch unit 1 .
发明人发现现有技术中至少存在如下问题：在图1中，每个矩形触控单元1对应一条信号通道，矩形触控单元1越小，一次触控操作中，电容发生变化的触控单元1数量就越多，触控灵敏度也就越高。但是触控单元1数量过多会使触控面板的Fanout区(扇出区)布线所需空间大大增加，从而导致边框变宽。The inventors found that there are at least the following problems in the prior art: in Figure 1, each rectangular touch unit 1 corresponds to a signal channel, and the smaller the rectangular touch unit 1, the touch unit whose capacitance changes during one touch operation 1 The more the number, the higher the touch sensitivity. However, too many touch units 1 will greatly increase the space required for wiring in the Fanout area (fan-out area) of the touch panel, resulting in a wider frame.
发明内容Contents of the invention
本发明所要解决的技术问题包括，针对现有的触控基板存在的上述问题，提供一种布线简单、成本较低的触控基板、显示面板及显示装置。The technical problem to be solved by the present invention includes, aiming at the above-mentioned problems existing in the existing touch substrate, to provide a touch substrate, a display panel and a display device with simple wiring and low cost.
解决本发明技术问题所采用的技术方案是一种触控基板，包括多个触控单元和多条触控信号线，每个所述触控单元连接一条所述触控信号线；所述触控基板还包括多个第一开关单元和多条源极信号线；其中，所述源极信号线通过所述第一开关单元与相应的触控单元连接；The technical solution adopted to solve the technical problem of the present invention is a touch substrate, including a plurality of touch units and a plurality of touch signal lines, each of the touch units is connected to one of the touch signal lines; The control substrate further includes a plurality of first switch units and a plurality of source signal lines; wherein, the source signal lines are connected to corresponding touch units through the first switch units;
所述第一开关单元，用于在所述第一开关控制信号的控制下，在触控阶段打开；The first switch unit is configured to be turned on during the touch stage under the control of the first switch control signal;
所述源极信号线，用于在触控阶段为所述触控单元提供触控电压信号。The source signal line is used to provide a touch voltage signal for the touch unit in a touch stage.
优选的是，所述触控基板还包括多条栅线和多条数据线，且在所述栅线和所述数据线的交叉位置处限定出像素单元；其中，Preferably, the touch control substrate further includes a plurality of gate lines and a plurality of data lines, and pixel units are defined at intersection positions of the gate lines and the data lines; wherein,
每条所述源极信号线还连接与其对应的所述数据线，用于在显示阶段为与其连接的数据线提供数据电压信号。Each of the source signal lines is also connected to the corresponding data line for providing a data voltage signal to the data line connected to it during the display phase.
优选的是，所述触控基板还包括多个公共电极、公共电极信号线、多个第二开关单元；其中，Preferably, the touch control substrate further includes a plurality of common electrodes, common electrode signal lines, and a plurality of second switch units; wherein,
所述公共电极与所述触控单元分时复用；The common electrode is time-division multiplexed with the touch unit;
所述公共电极线通过所述第二开关单元与所述触控信号线连接；所述第二开关单元，用于在所述第二开关控制信号的控制下，在显示阶段打开；所述公共电极线，用于在显示阶段为所述公共电极提供公共电压信号。The common electrode line is connected to the touch signal line through the second switch unit; the second switch unit is configured to be turned on in the display stage under the control of the second switch control signal; the common The electrode lines are used to provide common voltage signals to the common electrodes during the display phase.
进一步优选的是，所述第二开关单元为开关晶体管。Further preferably, the second switch unit is a switch transistor.
优选的是，所述第一开关单元为开关晶体管。Preferably, the first switch unit is a switch transistor.
优选的是，各个所述触控单元成矩阵排布。Preferably, each of the touch units is arranged in a matrix.
优选的是，所述触控单元的材料为透明导电材料。Preferably, the material of the touch control unit is a transparent conductive material.
优选的是，所述触控基板还包括源极驱动器，各个所述源极信号线均与所述源极驱动器连接。Preferably, the touch control substrate further includes a source driver, and each of the source signal lines is connected to the source driver.
解决本发明技术问题所采用的技术方案是一种显示面板，包括上述的触控基板。The technical solution adopted to solve the technical problem of the present invention is a display panel, including the above-mentioned touch substrate.
解决本发明技术问题所采用的技术方案是一种显示装置，包括上述的显示面板。The technical solution adopted to solve the technical problem of the present invention is a display device, including the above-mentioned display panel.
本发明具有如下有益效果：The present invention has following beneficial effect:
在本发明中，该触控触控基板在显示阶段，第一开关控制信号为低电平信号，各个第一开关单元是关断的，此时源极信号线将数据电压引入至数据线，以供实现不同灰阶的显示。在触控阶段，第一开关控制信号为高电平信号，此时各个第一开关单元打开，此时源极信号线不再向数据线提供数据电压信号，而是向触控信号线提供触控电压信号，以供在触控单元发生出触控时可以感应到触控点的位置。本发明中的该种触控基板的实现方式，较现有技术中采用单独增加的引线作为触控信号线3而言，本实施例的触控基板无需增加单独的通道数以及引线为各个触控单元1提供触控信号，从而可以降低生产成本。In the present invention, when the touch control substrate is in the display stage, the first switch control signal is a low-level signal, and each first switch unit is turned off. At this time, the source signal line introduces the data voltage to the data line, For displaying different gray scales. In the touch stage, the first switch control signal is a high-level signal. At this time, each first switch unit is turned on. At this time, the source signal line no longer provides a data voltage signal to the data line, but provides a touch signal to the touch signal line. The control voltage signal is used to sense the position of the touch point when the touch unit is touched. Compared with the implementation of the touch substrate in the present invention, which uses separately increased leads as the touch signal lines 3 in the prior art, the touch substrate of this embodiment does not need to increase the number of separate channels and lead wires for each touch The control unit 1 provides touch signals, thereby reducing production costs.
附图说明Description of drawings
图1为现有的触控基板的结构示意图；FIG. 1 is a schematic structural diagram of an existing touch substrate;
图2为本发明的实施例1的触控基板的结构示意图；2 is a schematic structural diagram of a touch substrate according to Embodiment 1 of the present invention;
图3为本发明的实施例1的触控基板中一个触控单元的结构示意图；3 is a schematic structural view of a touch unit in the touch substrate according to Embodiment 1 of the present invention;
图4为本发明的实施例1的触控基板的优选结构在显示阶段的工作结构示意图；4 is a schematic diagram of the working structure of the preferred structure of the touch substrate according to Embodiment 1 of the present invention in the display stage;
图5为本发明的实施例1的触控基板的工作时序图。FIG. 5 is a working sequence diagram of the touch substrate according to Embodiment 1 of the present invention.
其中附图标记为：1、触控单元；2、柔性线路板；3、触控信号线；4、源极信号线；5、第一开关单元；6、第二开关单元；7、公共电极线。Wherein reference signs are: 1. touch unit; 2. flexible circuit board; 3. touch signal line; 4. source signal line; 5. first switch unit; 6. second switch unit; 7. common electrode Wire.
具体实施方式detailed description
为使本领域技术人员更好地理解本发明的技术方案，下面结合附图和具体实施方式对本发明作进一步详细描述。In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
实施例1：Example 1:
如图2所示，本实施例提供一种触控基板，该触控基板可以应用至自容式触控面板中。该触控基板上包括多个触控单元1和多条触控信号线3，每个触控单元1连接一条触控信号线3；该触控单元1既做触控电极又做感应电极，触控信号线3既用于为触控电极提供触控信号，又用于将触控电极上的所感应的感应信号进行输出，以供确定触控点发生的位置。As shown in FIG. 2 , this embodiment provides a touch substrate, which can be applied to a self-capacitive touch panel. The touch substrate includes a plurality of touch units 1 and a plurality of touch signal lines 3, each touch unit 1 is connected to a touch signal line 3; the touch unit 1 is used as both a touch electrode and a sensing electrode, The touch signal line 3 is not only used to provide touch signals to the touch electrodes, but also used to output the sensing signals on the touch electrodes for determining the position of the touch point.
特别的是，本实施例中的触控基板还包括多个第一开关单元5和多条源极信号线4；其中，源极信号线4通过第一开关单元5与相应的触控单元1连接；第一开关单元5用于在第一开关控制信号(GCL信号)的控制下，在触控阶段打开；源极信号线4用于在触控阶段为触控单元1提供触控电压信号。In particular, the touch substrate in this embodiment further includes a plurality of first switch units 5 and a plurality of source signal lines 4; wherein, the source signal lines 4 communicate with the corresponding touch units 1 through the first switch units 5 Connection; the first switch unit 5 is used to open in the touch stage under the control of the first switch control signal (GCL signal); the source signal line 4 is used to provide the touch voltage signal for the touch unit 1 in the touch stage .
本领域技术人员可知的是，源极信号线4是将源极驱动器上所输出的数据电压信号引入至数据线(设于触控基板上)的引线。而在本实施例中源极信号线4不仅具有该功能，还可以触控电压信号引入至触控信号线3上，以感知所发生触控点的位置。Those skilled in the art know that the source signal line 4 is a lead line that introduces the data voltage signal output from the source driver to the data line (set on the touch control substrate). In this embodiment, the source signal line 4 not only has this function, but also can introduce the touch voltage signal to the touch signal line 3 to sense the position of the touch point.
本实施例中的触控基板包括多条栅线和多条数据线，在栅线和数据线在交叉位置限定出像素单元，每条所述源极信号线4还连接与其对应的所述数据线，用于在显示阶段为与其连接的数据线提供数据电压信号。The touch substrate in this embodiment includes a plurality of gate lines and a plurality of data lines, pixel units are defined at the crossing positions of the gate lines and data lines, and each source signal line 4 is also connected to the corresponding data line. The line is used to provide a data voltage signal for the data line connected to it during the display phase.
具体的，在显示阶段，第一开关控制信号为低电平信号，各个第一开关单元5是关断的，此时源极信号线4将数据电压引入至数据线，以供实现不同灰阶的显示。在触控阶段，第一开关控制信号为高电平信号，此时各个第一开关单元5打开，此时源极信号线4不再向数据线提供数据电压信号，而是向触控信号线3提供触控电压信号，以供在触控单元1发生出触控时可以感应到触控点的位置。本实施例中的该种触控基板的实现方式，较现有技术中采用单独增加的引线作为触控信号线3而言，本实施例的触控基板无需增加单独的通道数以及引线为各个触控单元1提供触控信号，从而可以降低生产成本。Specifically, in the display stage, the first switch control signal is a low-level signal, and each first switch unit 5 is turned off. At this time, the source signal line 4 introduces the data voltage to the data line for realizing different gray scales. display. In the touch stage, the first switch control signal is a high-level signal. At this time, each of the first switch units 5 is turned on. At this time, the source signal line 4 no longer provides the data voltage signal to the data line, but to the touch signal line. 3. Provide a touch voltage signal for sensing the position of the touch point when the touch unit 1 is touched. Compared with the implementation of the touch substrate in this embodiment, which uses separately increased leads as the touch signal lines 3 in the prior art, the touch substrate in this embodiment does not need to increase the number of separate channels and lead wires for each The touch unit 1 provides touch signals, thereby reducing production costs.
结合图3和4所示，作为本实施例中的一种优选的实现方式，触控基板上的触控单元1是与公共电极分时复用的，该触控基板上还包括多条公共电极信号线和多个第二开关单元6，公共电极线7通过所述第二开关单元6与所述触控信号线3连接；第二开关单元6用于在所述第二开关控制信号(GCH信号)的控制下，在显示阶段打开；公共电极线7，用于在显示阶段为所述公共电极提供公共电极电压Vcom。As shown in Figures 3 and 4, as a preferred implementation in this embodiment, the touch unit 1 on the touch substrate is time-multiplexed with the common electrodes, and the touch substrate also includes multiple common electrodes. The electrode signal line and a plurality of second switch units 6, the common electrode line 7 is connected to the touch signal line 3 through the second switch unit 6; the second switch unit 6 is used for the second switch control signal ( Under the control of the GCH signal), it is turned on during the display phase; the common electrode line 7 is used to provide the common electrode voltage Vcom for the common electrode during the display phase.
具体的，结合图5所示，在一帧画面的显示过程中包括：显示阶段和触控阶段两个部分。Specifically, as shown in FIG. 5 , the display process of one frame includes two parts: a display stage and a touch stage.
在显示阶段，第一开关控制信号(GCL信号)为低电平信号，第一开单元关断，第二开关控制信号(GCH信号)为高点平信号，第二开关单元6打开，此时源极信号线(source)4将源极驱动器所提供的数据电压信号引入至相应的数据线，以为相应的像素单元中的像素电极进行充电，同时第二开关单元6打开，通过公共电极线7将公共电极电压Vcom写入公共电极中，此时每个像素单元中的像素电极与公共电极形成电场，从而实现像素单元的不同灰阶的显示。In the display stage, the first switch control signal (GCL signal) is a low level signal, the first switch unit is turned off, the second switch control signal (GCH signal) is a high level signal, and the second switch unit 6 is turned on. The source signal line (source) 4 introduces the data voltage signal provided by the source driver to the corresponding data line, so as to charge the pixel electrode in the corresponding pixel unit, and at the same time, the second switch unit 6 is opened, and the common electrode line 7 The common electrode voltage Vcom is written into the common electrode, and at this time, the pixel electrode in each pixel unit forms an electric field with the common electrode, thereby realizing the display of different gray scales of the pixel unit.
在触控阶段，第一开关控制信号(GCL信号)为高电平信号，第一开单元打开，第二开关控制信号(GCH信号)为低电平信号，第二开关单元6关断，此时公共电极线7不再为公共电极写入公共电极电压Vcom，同时源极驱动器不再所提供的数据电压信号，而是通过源极信号线4/source给公共电极输入触控电压信号，每个公共电极此时做触控单元1用，以对触控位置进行确定。In the touch stage, the first switch control signal (GCL signal) is a high-level signal, the first opening unit is turned on, the second switch control signal (GCH signal) is a low-level signal, and the second switch unit 6 is turned off. At this time, the common electrode line 7 no longer writes the common electrode voltage Vcom into the common electrode, and at the same time, the source driver no longer provides the data voltage signal, but inputs the touch voltage signal to the common electrode through the source signal line 4/source. The first common electrode is now used as the touch unit 1 to determine the touch position.
其中，上述的第一晶体管和第二晶体管均可以为开关晶体管，当然也可以采用具有开关特性的其他元件。当第一晶体管和第二晶体管均采用开关晶体管时，开关晶体管可以与触控基板的像素单元中的开光晶体管采用依次构图工艺制备，此时不会增加工艺步骤，也不会增加成本。Wherein, both the above-mentioned first transistor and the second transistor may be switching transistors, and of course other elements with switching characteristics may also be used. When both the first transistor and the second transistor are switching transistors, the switching transistor and the switching transistor in the pixel unit of the touch substrate can be fabricated by a sequential patterning process, which does not increase process steps or cost.
其中，上述的各个触控单元1是成矩阵排布的。在此需要说明的是，一个触控单元1可以对应一个像素单元，此时所能够检测到的触控位置更精确。当然也可以是，每一个触控单元1对应多个相邻的像素单元，此时所需要布置的触控信号线3的数量相对较少，不会影响触控基板的开口率。Wherein, the above-mentioned touch units 1 are arranged in a matrix. It should be noted here that one touch unit 1 may correspond to one pixel unit, and in this case the detected touch position is more accurate. Of course, it is also possible that each touch unit 1 corresponds to a plurality of adjacent pixel units. In this case, the number of touch signal lines 3 to be arranged is relatively small, which will not affect the aperture ratio of the touch substrate.
其中，触控单元1的材料为透明导电材料，例如，氧化铟锡(ITO)等。Wherein, the material of the touch control unit 1 is a transparent conductive material, for example, indium tin oxide (ITO) and the like.
实施例2：Example 2:
本实施例提供一种显示面板和一种显示装置，其中，该显示面板包括实施例1中触控基板，该显示装置包括前述的显示面板。This embodiment provides a display panel and a display device, wherein the display panel includes the touch substrate in Embodiment 1, and the display device includes the aforementioned display panel.
当然本实施例中该显示装置可以为：手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。Of course, the display device in this embodiment can be any product or component with a display function such as a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, and the like.
当然本实施例中显示装置还具有常规的显示装置的外框等结构。Of course, the display device in this embodiment also has structures such as the outer frame of a conventional display device.
可以理解的是，以上实施方式仅仅是为了说明本发明的原理而采用的示例性实施方式，然而本发明并不局限于此。对于本领域内的普通技术人员而言，在不脱离本发明的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本发明的保护范围。It can be understood that, the above embodiments are only exemplary embodiments adopted for illustrating the principle of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also regarded as the protection scope of the present invention.
| Application Number | Priority Date | Filing Date | Title |
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| CN201610383351.4ACN106055156A (en) | 2016-06-01 | 2016-06-01 | Touch substrate, display panel and display device |
| Application Number | Priority Date | Filing Date | Title |
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| CN201610383351.4ACN106055156A (en) | 2016-06-01 | 2016-06-01 | Touch substrate, display panel and display device |
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| CN106055156Atrue CN106055156A (en) | 2016-10-26 |
| Application Number | Title | Priority Date | Filing Date |
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| CN201610383351.4APendingCN106055156A (en) | 2016-06-01 | 2016-06-01 | Touch substrate, display panel and display device |
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| CN106527820A (en)* | 2016-12-27 | 2017-03-22 | 武汉华星光电技术有限公司 | Array substrate of embedded touch structure, and display panel |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication | Application publication date:20161026 |