技术领域technical field
本实用新型涉及显示领域，具体地，涉及一种显示面板和一种包括该显示面板的显示装置。The utility model relates to the display field, in particular to a display panel and a display device comprising the display panel.
背景技术Background technique
触摸屏是目前最新的信息输入设备，它能简单、方便、自然地实现人机交互，为人们提供一种全新的多媒体人机交互方法，由于其具有触摸反应灵敏、支持多点触摸等优点，极大地满足了人们的视觉和触觉的享受。Touch screen is the latest information input device at present. It can realize human-computer interaction simply, conveniently and naturally, and provide people with a brand-new method of multimedia human-computer interaction. The earth satisfies people's visual and tactile enjoyment.
通常，触摸屏至少包括用于显示的显示屏和用于触控的触控屏。目前，触摸屏按照组成结构可以分为：外挂式触控屏（Add onMode Touch Panel）、覆盖表面式触控屏（On Cell Touch Panel）以及内嵌式触控屏（In Cell Touch Panel），即在显示屏的内部、表面或外部做出感应电极Rx、驱动电极Tx。尽管触控屏的结构不同，但均包括有感应电极Rx和驱动电极Tx，并分别连接相应的感应信号线和驱动信号线。在人体触摸触控屏的过程中，通过感应电极Rx和驱动电极Tx之间的电场变化，从而“感知”人体的触碰来实现触控功能。Generally, a touch screen includes at least a display screen for display and a touch screen for touch control. At present, according to the structure of the touch screen, it can be divided into: Add onMode Touch Panel, On Cell Touch Panel and In Cell Touch Panel. Sensing electrodes Rx and driving electrodes Tx are formed inside, on the surface or outside of the display screen. Although the structures of the touch screens are different, they all include sensing electrodes Rx and driving electrodes Tx, and are respectively connected to corresponding sensing signal lines and driving signal lines. When the human body touches the touch screen, the touch function is realized by "sensing" the touch of the human body through the change of the electric field between the sensing electrode Rx and the driving electrode Tx.
作为当今液晶显示领域的佼佼者，高级超维场转换（ADvancedSuper Dimension Switch，ADSDS，简称ADS）模式的液晶显示装置凭借其宽广的视角、更高的对比率、更高的分辨率及更明亮的颜色呈现，逐渐被消费者所追捧。在具有触控功能的ADS模式的液晶显示装置中，通常采用电容互感式“感知”触控，因此通常将感应电极Rx与驱动电极Tx设置为在正投影方向上至少部分重叠的交叉式，但这种结构在实现“感知”的同时，为了保证正常的触控电容变化率，要求感应电极Rx和驱动电极Tx之间不能有太大的正对面积，以保证二者之间的节点电容满足触控要求。但是，目前通常采用的感应电极Rx和驱动电极Tx的排列方式，容易导致感应电极Rx与驱动电极Tx之间的耦合电容过大，影响触控的灵敏度；而且，感应电极Rx通常沿黑矩阵的纵边（就目前的彩膜基板而言，纵边的宽度小于横边的宽度）设置，由于较窄的黑矩阵无法完全遮挡感应电极Rx的图形，导致在正常显示情况下出现感应电极Rx对图像显示造成阻碍，影响显示效果。As a leader in the field of liquid crystal display today, the liquid crystal display device of the Advanced Super Dimension Switch (ADSDS, referred to as ADS) mode relies on its wide viewing angle, higher contrast ratio, higher resolution and brighter The color presentation is gradually sought after by consumers. In an ADS mode liquid crystal display device with a touch function, capacitive mutual inductance is usually used to "sense" touch, so the sensing electrode Rx and the driving electrode Tx are usually arranged in a cross pattern that at least partially overlaps in the front projection direction, but This structure realizes "sensing", and in order to ensure the normal touch capacitance change rate, it is required that there should not be too much facing area between the sensing electrode Rx and the driving electrode Tx, so as to ensure that the node capacitance between the two satisfies Touch requirements. However, the arrangement of sensing electrodes Rx and driving electrodes Tx commonly used at present may easily lead to excessive coupling capacitance between sensing electrodes Rx and driving electrodes Tx, which affects touch sensitivity; moreover, sensing electrodes Rx are usually arranged along the black matrix The vertical side (as far as the current color filter substrate is concerned, the width of the vertical side is smaller than the width of the horizontal side) is set, because the narrow black matrix cannot completely block the pattern of the sensing electrode Rx, resulting in a pair of sensing electrodes Rx under normal display conditions. The image display is obstructed and affects the display effect.
因此，如何提高触控的灵敏度，改善图像显示效果，成为目前亟待解决的技术问题。Therefore, how to improve the touch sensitivity and improve the image display effect has become a technical problem to be solved urgently.
实用新型内容Utility model content
本实用新型的目的在于提供一种显示面板和一种包括该显示面板的显示装置，该显示面板通过将驱动电极与公共电极同层设置，并利用冗余的数据线结构使得同一列的驱动电极电连接，减小了驱动电极的对地电容，提高了触控灵敏度；同时，将感应电极设置于黑矩阵的较宽长条的覆盖范围内，改善了图像显示效果。The purpose of this utility model is to provide a display panel and a display device including the display panel. The display panel arranges the driving electrodes and the common electrodes on the same layer, and utilizes redundant data line structure to make the driving electrodes of the same column The electrical connection reduces the ground capacitance of the driving electrodes and improves the touch sensitivity; at the same time, the sensing electrodes are arranged within the coverage of the wider strips of the black matrix to improve the image display effect.
解决本实用新型技术问题所采用的技术方案是一种显示面板，该显示面板包括阵列基板和彩膜基板，其中，所述阵列基板中设置有第一电极和第二电极，所述彩膜基板中设置有第三电极，所述第一电极和所述第二电极设于同一层，所述第一电极和所述第二电极依次间隔平行设置且彼此电性隔离，所述第二电极与所述第三电极在空间上对应设置。The technical solution adopted to solve the technical problem of the utility model is a display panel, which includes an array substrate and a color filter substrate, wherein the array substrate is provided with a first electrode and a second electrode, and the color filter substrate A third electrode is arranged in the middle, the first electrode and the second electrode are arranged on the same layer, the first electrode and the second electrode are arranged in parallel at intervals and are electrically isolated from each other, and the second electrode and the second electrode are arranged in parallel and electrically isolated from each other. The third electrodes are correspondingly arranged in space.
优选的是，所述第一电极包括多个排列成行且相互绝缘的子电极，处于同一列的多个所述子电极彼此电连接，处于不同列的多个所述子电极彼此电性隔离；所述第二电极的延伸方向与所述第一电极的子电极的行排列方向相同，多个所述第二电极彼此电连接。Preferably, the first electrode includes a plurality of sub-electrodes arranged in rows and insulated from each other, the plurality of sub-electrodes in the same column are electrically connected to each other, and the plurality of sub-electrodes in different columns are electrically isolated from each other; The extension direction of the second electrodes is the same as the row arrangement direction of the sub-electrodes of the first electrodes, and a plurality of the second electrodes are electrically connected to each other.
优选的是，处于同一列的多个所述子电极通过第一电极连接线彼此电连接，所述第一电极连接线的延伸方向与所述第一电极的子电极的行排列方向垂直。Preferably, the plurality of sub-electrodes in the same column are electrically connected to each other through first electrode connection lines, and the extension direction of the first electrode connection lines is perpendicular to the row arrangement direction of the sub-electrodes of the first electrodes.
优选的是，所述第一电极连接线与所述第一电极和所述第二电极之间设置有绝缘层，所述绝缘层在对应着所述第一电极的区域开设有绝缘层过孔，所述第一电极连接线在对应着所述第一电极的区域分设有至少两条并联连接的支线，该所述支线与所述第一电极通过所述绝缘层过孔电连接；所述第一电极连接线在对应着所述第二电极的区域仅设置一条支线，该所述支线与所述第二电极通过所述绝缘层电性隔离。Preferably, an insulating layer is provided between the first electrode connection line and the first electrode and the second electrode, and an insulating layer via hole is opened in a region corresponding to the first electrode in the insulating layer , the first electrode connection line is divided into at least two branch lines connected in parallel in the area corresponding to the first electrode, and the branch lines are electrically connected to the first electrode through the via hole in the insulating layer; The first electrode connection line has only one branch line provided in the area corresponding to the second electrode, and the branch line is electrically isolated from the second electrode through the insulating layer.
优选的是，所述阵列基板包括多条数据线，所述第一电极连接线与所述数据线依次间隔设置、且所述数据线的延伸方向与所述第一电极连接线的延伸方向相同。Preferably, the array substrate includes a plurality of data lines, the first electrode connection lines and the data lines are sequentially arranged at intervals, and the extension direction of the data lines is the same as the extension direction of the first electrode connection lines .
优选的是，所述第一电极连接线与所述数据线同层设置，所述第一电极连接线与所述数据线采用相同的材料、在同一构图工艺中形成。Preferably, the first electrode connection line and the data line are arranged on the same layer, and the first electrode connection line and the data line are formed using the same material and in the same patterning process.
优选的是，所述阵列基板中还设置有栅线，所述栅线与所述第一电极连接线和所述数据线交叉设置并将所述阵列基板划分为多个子像素区域，所述子像素区域内设置有薄膜晶体管，同一所述数据线两侧的所述子像素区域中，相邻行子像素区域中的薄膜晶体管对角设置，且该对角设置的所述薄膜晶体管的源极与同一所述数据线电连接、其栅极与不同的所述栅线电连接。Preferably, the array substrate is further provided with gate lines, the gate lines intersect with the first electrode connection lines and the data lines and divide the array substrate into a plurality of sub-pixel regions, the sub-pixel regions Thin film transistors are arranged in the pixel area, and in the sub-pixel areas on both sides of the same data line, the thin film transistors in the sub-pixel areas of adjacent rows are arranged diagonally, and the sources of the thin film transistors arranged diagonally It is electrically connected to the same data line, and its gate is electrically connected to a different gate line.
优选的是，所述子像素区域内还设置有像素电极，所述像素电极与该所述子像素区域内的所述薄膜晶体管的漏极电连接；所述第一电极和所述第二电极设置于所述像素电极的上方，且所述第二电极与所述像素电极在正投影方向上至少部分重叠。Preferably, a pixel electrode is also provided in the sub-pixel area, and the pixel electrode is electrically connected to the drain of the thin film transistor in the sub-pixel area; the first electrode and the second electrode It is disposed above the pixel electrode, and the second electrode at least partially overlaps with the pixel electrode in an orthographic projection direction.
优选的是，所述彩膜基板还包括黑矩阵和彩膜层，所述黑矩阵为由宽度不等的长条交错形成的网格结构，所述第三电极设置于远离所述彩膜基板的黑矩阵一侧且设置在宽度较大的所述长条上，多个所述第三电极通过第三电极连接线彼此电连接。Preferably, the color filter substrate further includes a black matrix and a color filter layer, the black matrix is a grid structure formed by interlacing strips with different widths, and the third electrode is arranged far away from the color filter substrate The plurality of third electrodes are electrically connected to each other through third electrode connecting lines.
优选的是，相邻的所述第一电极与所述第三电极之间的水平间距为一个所述子像素区域在与所述第一电极的排列方向垂直的方向上的宽度。Preferably, the horizontal distance between the adjacent first electrodes and the third electrodes is the width of one sub-pixel region in a direction perpendicular to the arrangement direction of the first electrodes.
一种显示装置，包括显示面板，其中，所述显示面板采用上述的显示面板。A display device includes a display panel, wherein the above-mentioned display panel is used for the display panel.
本实用新型的有益效果是：本实用新型提供的显示面板，在不增加工艺流程的基础上，通过将原有的板状的公共电极做矩形分割处理，保证用于作为显示用的公共电极与作为触控用的驱动电极彼此电性隔离，并应用冗余数据线实现驱动电极之间的连接，即能够同时满足触控功能和显示功能的要求，使得包含有该显示面板的显示装置具有良好的图像显示效果，以及较高的触控灵敏度。The beneficial effects of the utility model are: the display panel provided by the utility model, on the basis of not increasing the process flow, by performing rectangular segmentation processing on the original plate-shaped common electrodes, it is guaranteed that the common electrodes used for display and The driving electrodes used for touch control are electrically isolated from each other, and redundant data lines are used to realize the connection between the driving electrodes, that is, the requirements of the touch function and the display function can be met at the same time, so that the display device including the display panel has good performance. Excellent image display effect and high touch sensitivity.
附图说明Description of drawings
附图是用来提供对本实用新型的进一步理解，并且构成说明书的一部分，与下面的具体实施方式一起用于解释本实用新型，但并不构成对本实用新型的限制。在附图中：The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the description, together with the following specific embodiments, are used to explain the utility model, but do not constitute a limitation to the utility model. In the attached picture:
图1为本实用新型实施例1中显示面板的剖视图；Fig. 1 is a cross-sectional view of a display panel in Embodiment 1 of the present utility model;
图2为图1中驱动电极、感应电极与公共电极的相对位置示意图；FIG. 2 is a schematic diagram of the relative positions of the driving electrodes, the sensing electrodes and the common electrodes in FIG. 1;
图3为对应着图2中A点局部放大的示意图；Fig. 3 is a schematic diagram corresponding to a partial enlargement of point A in Fig. 2;
图4为本实用新型实施例1中驱动电极的连接示意图；4 is a schematic diagram of the connection of the driving electrodes in Embodiment 1 of the present utility model;
图5为本实用新型实施例1中像素分布的平面示意图；5 is a schematic plan view of pixel distribution in Embodiment 1 of the present utility model;
图6为本实用新型实施例2中显示装置的结构示意图；6 is a schematic structural diagram of a display device in Embodiment 2 of the present invention;
图7为本实用新型实施例2中时序信号波形图。FIG. 7 is a waveform diagram of timing signals in Embodiment 2 of the present invention.
其中，附图标记说明：Wherein, the reference numerals explain:
1-阵列基板；11-第一基板；12-薄膜晶体管；13-第一电极；131-第一电极连接线；14-第二电极；15-绝缘层过孔；16-像素电极；17-栅线；18-数据线；2-彩膜基板；21-第二基板；22-黑矩阵；23-彩膜层；24-第三电极；241-第三电极连接线；3-液晶层；31-液晶分子；41-栅极驱动器；42-源极驱动器；43-电压转换器；44-发射器；45-触控控制器。1-array substrate; 11-first substrate; 12-thin film transistor; 13-first electrode; 131-first electrode connection line; 14-second electrode; 15-insulating layer via hole; 16-pixel electrode; 18-data line; 2-color film substrate; 21-second substrate; 22-black matrix; 23-color film layer; 24-third electrode; 241-third electrode connection line; 3-liquid crystal layer; 31-liquid crystal molecule; 41-gate driver; 42-source driver; 43-voltage converter; 44-emitter; 45-touch controller.
具体实施方式Detailed ways
以下结合附图对本实用新型的具体实施方式进行详细说明。应当理解的是，此处所描述的具体实施方式仅用于说明和解释本实用新型，并不用于限制本实用新型。The specific embodiment of the utility model will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the utility model, and are not intended to limit the utility model.
一种显示面板，该显示面板包括阵列基板和彩膜基板，其中，所述阵列基板中设置有第一电极和第二电极，所述彩膜基板中设置有第三电极，所述第一电极和所述第二电极设于同一层，所述第一电极和所述第二电极依次间隔设置且彼此电性隔离，所述第二电极与所述第三电极在空间上对应设置。A display panel, comprising an array substrate and a color filter substrate, wherein a first electrode and a second electrode are arranged in the array substrate, a third electrode is arranged in the color filter substrate, and the first electrode The first electrode and the second electrode are disposed on the same layer as the second electrode, and the first electrode and the second electrode are sequentially arranged at intervals and electrically isolated from each other, and the second electrode and the third electrode are arranged correspondingly in space.
一种显示装置，包括显示面板，其中，所述显示面板采用上述的显示面板。A display device includes a display panel, wherein the above-mentioned display panel is used for the display panel.
实施例1：Example 1:
本实施例提供一种显示面板，该显示面板具有内嵌式触控屏，可用于ADS模式的液晶显示装置。This embodiment provides a display panel, which has an embedded touch screen and can be used in an ADS mode liquid crystal display device.
如图1、2所示，该显示面板包括阵列基板和彩膜基板，其中，阵列基板1包括第一基板11以及设置于第一基板11上方的第一电极13和第二电极14，彩膜基板2包括第二基板21以及设置于第二基板21上方的第三电极24，第一电极13和第二电极14设于同一层，第一电极13和第二电极14依次间隔平行设置且彼此电性隔离，第二电极14与第三电极24在空间上对应设置。在本实施例中，第一电极13可以分时复用为显示用的部分公共电极Vcom和触控用的驱动电极Tx，第二电极14可以作为显示用的、为阵列基板提供公共电压的部分公共电极Vcom，第三电极24可以作为触控用的感应电极Rx。As shown in Figures 1 and 2, the display panel includes an array substrate and a color filter substrate, wherein the array substrate 1 includes a first substrate 11 and a first electrode 13 and a second electrode 14 arranged above the first substrate 11, and the color filter The substrate 2 includes a second substrate 21 and a third electrode 24 arranged above the second substrate 21, the first electrode 13 and the second electrode 14 are arranged on the same layer, and the first electrode 13 and the second electrode 14 are arranged in parallel with each other at intervals. Electrically isolated, the second electrode 14 and the third electrode 24 are arranged correspondingly in space. In this embodiment, the first electrode 13 can be time-divisionally multiplexed as part of the common electrode Vcom for display and the driving electrode Tx for touch control, and the second electrode 14 can be used as a part for display and providing a common voltage for the array substrate. The common electrode Vcom and the third electrode 24 can be used as sensing electrodes Rx for touch control.
如图2所示，第一电极13包括多个排列成行且相互绝缘的子电极，处于同一列的多个子电极彼此电连接，处于不同列的多个子电极彼此电性隔离；第二电极14的延伸方向与第一电极13的子电极的行排列方向相同，多个第二电极14彼此电连接。在本实施例中，排列方向即指，沿某一方向，子电极具有连续的分布，对应到图2中，第一电极13中子电极的排列方向即指子电极沿着相邻的第二电极14之间形成的间隙区排列的方向。具体的，如图2所示，处于同一列的多个子电极通过第一电极连接线131彼此电连接，第一电极连接线131的延伸方向与第一电极的子电极的行排列方向垂直（图2中所示的第一电极连接线131还示出了显示区边沿的布线方向）。As shown in Figure 2, the first electrode 13 includes a plurality of sub-electrodes arranged in rows and insulated from each other, a plurality of sub-electrodes in the same column are electrically connected to each other, and a plurality of sub-electrodes in different columns are electrically isolated from each other; the second electrode 14 The extending direction is the same as the row arrangement direction of the sub-electrodes of the first electrodes 13 , and the plurality of second electrodes 14 are electrically connected to each other. In this embodiment, the arrangement direction means that along a certain direction, the sub-electrodes have a continuous distribution. Corresponding to FIG. The direction in which the gap regions formed between the electrodes 14 are aligned. Specifically, as shown in FIG. 2, a plurality of sub-electrodes in the same column are electrically connected to each other through a first electrode connection line 131, and the extension direction of the first electrode connection line 131 is perpendicular to the row arrangement direction of the sub-electrodes of the first electrode (Fig. The first electrode connection line 131 shown in 2 also shows the wiring direction of the edge of the display area).
在本实施例中，如图1所示，彩膜基板2还包括黑矩阵22和彩膜层23，黑矩阵22为由宽度不等的长条（包括纵边和横边）交错形成的网格结构，横边的宽度大于纵边的宽度，第三电极24设置于横边的上方、且远离彩膜基板的黑矩阵22一侧，多个第三电极24彼此电连接。如图2和图5所示，第三电极24通过第三电极连接线241（图2中所示的第三电极连接线241还示出了显示区边沿的布线方向）彼此电连接。由于此时第三电极24设置在黑矩阵22的较宽的横边上，黑矩阵22能使得第三电极24完全落在其正投影方向内，黑矩阵22能完全遮挡感应电极Rx的图形，因此能减小甚至消除感应电极因遮挡到正常显示区域而可能造成的对显示画面的阻碍的不良。In this embodiment, as shown in FIG. 1 , the color filter substrate 2 further includes a black matrix 22 and a color filter layer 23 , and the black matrix 22 is a network formed by interlacing long strips (including vertical and horizontal sides) of different widths. Grid structure, the width of the horizontal side is greater than the width of the vertical side, the third electrode 24 is arranged above the horizontal side and away from the side of the black matrix 22 of the color filter substrate, and the plurality of third electrodes 24 are electrically connected to each other. As shown in FIG. 2 and FIG. 5 , the third electrodes 24 are electrically connected to each other through third electrode connection lines 241 (the third electrode connection lines 241 shown in FIG. 2 also show the wiring direction of the edge of the display area). Since the third electrode 24 is arranged on the wider lateral side of the black matrix 22 at this time, the black matrix 22 can make the third electrode 24 fall completely in its orthographic projection direction, and the black matrix 22 can completely block the pattern of the sensing electrode Rx, Therefore, it is possible to reduce or even eliminate the defect of obstructing the display screen that may be caused by the sensing electrodes blocking the normal display area.
另外，在本实施例的显示面板中，如图1所示，彩膜基板2和阵列基板1之间设置有液晶层3，液晶层3包括多个液晶分子31。In addition, in the display panel of this embodiment, as shown in FIG. 1 , a liquid crystal layer 3 is disposed between the color filter substrate 2 and the array substrate 1 , and the liquid crystal layer 3 includes a plurality of liquid crystal molecules 31 .
如图5所示，阵列基板1包括多条数据线18，第一电极连接线131与数据线18依次间隔设置、且数据线18的延伸方向与第一电极连接线131的延伸方向相同。为了简化工艺，在阵列基板的制备过程中，第一电极连接线131与数据线18同层设置，第一电极连接线131与数据线18采用相同的材料、在同一构图工艺中形成。例如，第一电极连接线131可以采用钼、铝等金属形成。As shown in FIG. 5 , the array substrate 1 includes a plurality of data lines 18 , the first electrode connection lines 131 and the data lines 18 are sequentially arranged at intervals, and the extension direction of the data lines 18 is the same as that of the first electrode connection lines 131 . In order to simplify the process, in the preparation process of the array substrate, the first electrode connection lines 131 and the data lines 18 are arranged on the same layer, and the first electrode connection lines 131 and the data lines 18 are formed using the same material and in the same patterning process. For example, the first electrode connecting wire 131 may be formed of metals such as molybdenum and aluminum.
如图5所示，阵列基板1中还设置有栅线17，栅线17与第一电极连接线131和数据线18交叉设置并将阵列基板1划分为多个子像素区域，子像素区域内设置有薄膜晶体管12（薄膜晶体管为阵列基板1的一部分，在图1中未具体示出），同一数据线18两侧的子像素区域中，相邻行子像素区域中的薄膜晶体管12对角设置，且该对角设置的薄膜晶体管12的源极与同一数据线18电连接。同时，为了实现逐行扫描显示，同一数据线18两侧的子像素区域中，相邻行子像素区域中的薄膜晶体管12的栅极与不同的栅线17电连接。As shown in FIG. 5 , the array substrate 1 is also provided with a gate line 17, which is arranged to intersect with the first electrode connection line 131 and the data line 18, and divides the array substrate 1 into a plurality of sub-pixel regions. There are thin film transistors 12 (the thin film transistors are part of the array substrate 1, not specifically shown in FIG. 1 ), and in the sub-pixel regions on both sides of the same data line 18, the thin-film transistors 12 in the sub-pixel regions of adjacent rows are arranged diagonally , and the sources of the diagonally arranged thin film transistors 12 are electrically connected to the same data line 18 . Meanwhile, in order to realize progressive scanning display, in the sub-pixel regions on both sides of the same data line 18 , the gates of the thin film transistors 12 in the sub-pixel regions of adjacent rows are electrically connected to different gate lines 17 .
也即，在本实施例中，阵列基板为双栅型（Dual Gate）结构，与现有技术中单栅型结构中处于不同列子像素区域中的薄膜晶体管的源极均需分别各连接一根数据线相比，该结构中只需在相邻的两列子像素区域之间设置一根数据线，并将该数据线分别与位于其两侧的子像素区域中的薄膜晶体管的源极电连接即可，因此可以很巧妙地将未连接薄膜晶体管的数据线作为电极连接线（即本实施例中的第一电极连接线131，可视为冗余的数据线结构）使用；而且，由于电极连接线与数据线同层设置，电极连接线与数据线采用相同的材料、在同一构图工艺中形成，因此不用额外增加工艺步骤即可制备完成该结构的阵列基板。That is to say, in this embodiment, the array substrate has a dual-gate structure, and the sources of the thin-film transistors in different sub-pixel regions in the single-gate structure in the prior art need to be connected to one respectively. Compared with the data line, in this structure, only one data line needs to be set between two adjacent columns of sub-pixel regions, and the data line is electrically connected to the source electrodes of the thin film transistors in the sub-pixel regions on both sides of the data line respectively. Therefore, the data lines not connected to the thin film transistors can be cleverly used as electrode connection lines (that is, the first electrode connection line 131 in this embodiment, which can be regarded as a redundant data line structure); and, because the electrodes The connection lines and the data lines are arranged on the same layer, and the electrode connection lines and the data lines are made of the same material and formed in the same patterning process, so the array substrate with this structure can be prepared without adding additional process steps.
同时，这里应该理解的是，本实施例中的行和列、横边和纵边为正交设置、并且相对设置，在实际应用中对其具体方向不做限定，只要保证行和列、横边和纵边分别为正交设置即可。At the same time, it should be understood here that the rows and columns, horizontal sides and vertical sides in this embodiment are arranged orthogonally and relative to each other, and their specific directions are not limited in practical applications, as long as the rows and columns, horizontal sides and vertical sides are ensured The side and the vertical side can be set to be orthogonal respectively.
在本实施例中，参考图5，阵列基板的子像素区域内还设置有像素电极16（像素电极为阵列基板1的一部分，在图1中未具体示出），像素电极16与该子像素区域内的薄膜晶体管12的漏极电连接；第一电极13和第二电极14设置于像素电极16的上方，且第二电极14与像素电极16在正投影方向上至少部分重叠。在本实施例中，像素电极16为狭缝状。在本实施例中，作为公共电极Vcom的一条第二电极14可以覆盖多个子像素区域，而且，第二电极14为一部分公共电极，第一电极13在显示时间段为另一部分公共电极，该两部分公共电极共同形成一个接近板状电极层。在本实施例中，公共电极与像素电极一起将电场提供给夹在二者之间的液晶层3；并根据增加到各子像素区域中的像素电极上的电位来驱动液晶分子31，从而实现图像显示。由于公共电极与像素电极16均设置在阵列基板1中，因此，可以通过狭缝电极边缘所产生的电场以及狭缝电极层与板状电极层间产生的电场形成多维电场。In this embodiment, referring to FIG. 5 , a pixel electrode 16 is also provided in the sub-pixel area of the array substrate (the pixel electrode is a part of the array substrate 1, not specifically shown in FIG. 1 ), and the pixel electrode 16 is connected to the sub-pixel The drains of the thin film transistors 12 in the region are electrically connected; the first electrode 13 and the second electrode 14 are disposed above the pixel electrode 16 , and the second electrode 14 and the pixel electrode 16 at least partially overlap in the orthographic projection direction. In this embodiment, the pixel electrodes 16 are in the shape of slits. In this embodiment, one second electrode 14 serving as the common electrode Vcom can cover multiple sub-pixel regions, and the second electrode 14 is a part of the common electrode, and the first electrode 13 is another part of the common electrode during the display period. Part of the common electrodes together form a nearly plate-shaped electrode layer. In this embodiment, the common electrode and the pixel electrode provide an electric field to the liquid crystal layer 3 sandwiched between them; and the liquid crystal molecules 31 are driven according to the potential added to the pixel electrode in each sub-pixel area, thereby realizing Image display. Since the common electrode and the pixel electrode 16 are both disposed in the array substrate 1 , a multi-dimensional electric field can be formed by the electric field generated at the edge of the slit electrode and the electric field generated between the slit electrode layer and the plate electrode layer.
容易理解的是，在薄膜晶体管中由于含有作为控制端的栅极以及作为输入/出端的源/漏极，为保证各端口的正常工作，栅极与源/漏极之间可以设置有栅绝缘层，薄膜晶体管与像素电极之间可以设置有钝化层或平坦层。相应的，在本实施例中，第一电极连接线131与第一电极13和第二电极14之间设置有绝缘层（图4、5中略去而未示出），绝缘层在对应着第一电极13的区域开设有绝缘层过孔15（Via Hole），第一电极连接线131在对应着第一电极13的区域分设有至少两条并联连接的支线，该支线与第一电极13通过绝缘层过孔15电连接；第一电极连接线131在对应着第二电极14的区域仅设置一条支线，该支线与第二电极14通过绝缘层电性隔离。如图4所示，在第一电极连接线131在对应着第一电极13（驱动电极Tx）的区域，使用全区域的导通方式或者多根支线的连接方式（在图4中只示出3根支线），使得驱动电极Tx内部本身的阻值降低；而在对应着穿越第二电极14（公共电极Vcom）的区域，只用一根或很少根支线路进行电连接，以减小驱动电极Tx的对地电容。另外，在图4中，每一支线与驱动电极Tx电连接时仅通过一个绝缘层过孔15；当然，也可以如图5所示，每一支线与驱动电极Tx电连接时通过两个绝缘层过孔15，甚至通过更多的绝缘层过孔。It is easy to understand that since the thin film transistor contains the gate as the control terminal and the source/drain as the input/output terminal, in order to ensure the normal operation of each port, a gate insulating layer can be provided between the gate and the source/drain , a passivation layer or a planarization layer may be provided between the thin film transistor and the pixel electrode. Correspondingly, in this embodiment, an insulating layer (omitted and not shown in FIGS. An insulating layer via hole 15 (Via Hole) is opened in the area of an electrode 13, and the first electrode connection line 131 is provided with at least two branch lines connected in parallel in the area corresponding to the first electrode 13, and the branch line and the first electrode 13 pass through The insulating layer via hole 15 is electrically connected; the first electrode connection line 131 has only one branch line in the area corresponding to the second electrode 14 , and the branch line is electrically isolated from the second electrode 14 through the insulating layer. As shown in FIG. 4, in the area corresponding to the first electrode 13 (driving electrode Tx) of the first electrode connection line 131, the conduction mode of the whole area or the connection mode of multiple branch lines (only shown in FIG. 4 3 branch lines), so that the internal resistance of the drive electrode Tx is reduced; and in the area corresponding to the second electrode 14 (common electrode Vcom), only one or a few branch lines are used for electrical connection, so as to reduce Capacitance to ground of drive electrode Tx. In addition, in FIG. 4, each branch line is electrically connected to the driving electrode Tx through only one insulating layer via hole 15; of course, as shown in FIG. 5, each branch line is electrically connected to the driving electrode Tx through two insulating layer via holes Layer vias 15, and even more vias through more insulating layers.
这里应该理解的是，第一电极13和第二电极14与第一电极连接线131之间的绝缘层能起到电隔离的作用，且一般采用透明材料形成，例如采用硅氧化物、硅氮化物、铪氧化物、硅氮氧化物或铝氧化物等形成，由于这些层的结构与形成工艺与现有技术相同，因此这里不再赘述；同时，由于这些绝缘层一般采用透明材料形成，对图4、5中的平面图的观察不会造成阻碍，因此在图4、5的平面示意图中略去绝缘层的示意。It should be understood here that the insulating layer between the first electrode 13 and the second electrode 14 and the first electrode connection line 131 can play the role of electrical isolation, and is generally formed of transparent materials, such as silicon oxide, silicon nitride compound, hafnium oxide, silicon oxynitride or aluminum oxide, etc., because the structure and formation process of these layers are the same as the prior art, so it will not be repeated here; at the same time, because these insulating layers are generally formed of transparent materials, for Observation of the plan views in FIGS. 4 and 5 is not hindered, so the illustration of the insulating layer is omitted in the plan views of FIGS. 4 and 5 .
如图3所示，在图2中对应的A点的局部放大示意图中，第一电极13（驱动电极Tx）与第三电极24（感应电极Rx）之间的水平间距GAP的宽度，直接影响触控电容变化率。优选的是，相邻的第一电极13与第三电极24之间的水平间距为一个子像素区域在与第一电极13的排列方向垂直的方向上的宽度。在实际应用中，在保证触控电容变化率的同时，可以调整合适的GAP宽度，从而得到满足要求的变化率。同时，由于驱动电极Tx与感应电极Rx之间并不形成直接的正对面积，因此能最大限度降低驱动电极Tx与感应电极Rx之间的耦合电容，提高触控灵敏度。As shown in Figure 3, in the partially enlarged schematic diagram corresponding to point A in Figure 2, the width of the horizontal gap GAP between the first electrode 13 (driving electrode Tx) and the third electrode 24 (sensing electrode Rx) directly affects Touch capacitance change rate. Preferably, the horizontal distance between adjacent first electrodes 13 and third electrodes 24 is the width of one sub-pixel region in a direction perpendicular to the arrangement direction of the first electrodes 13 . In practical applications, while ensuring the rate of change of the touch capacitance, an appropriate GAP width can be adjusted to obtain a rate of change that meets requirements. At the same time, since there is no direct facing area between the driving electrodes Tx and the sensing electrodes Rx, the coupling capacitance between the driving electrodes Tx and the sensing electrodes Rx can be minimized to improve touch sensitivity.
本实施例中显示面板的驱动方法，基于上述显示面板的结构，即该显示面板包括阵列基板和彩膜基板，阵列基板中设置有第一电极和第二电极，彩膜基板中设置有第三电极，第一电极和第二电极设于同一层，第一电极和第二电极依次间隔平行设置且彼此电性隔离，第二电极与第三电极在空间上对应设置，驱动方法包括将第一电极分时复用为显示用的部分公共电极和触控用的驱动电极。The driving method of the display panel in this embodiment is based on the above-mentioned structure of the display panel, that is, the display panel includes an array substrate and a color filter substrate, the array substrate is provided with a first electrode and a second electrode, and the color filter substrate is provided with a third electrode. Electrodes, the first electrode and the second electrode are arranged on the same layer, the first electrode and the second electrode are arranged in parallel at intervals and are electrically isolated from each other, the second electrode and the third electrode are arranged correspondingly in space, and the driving method includes the first The electrodes are time-divisionally multiplexed into some common electrodes for display and driving electrodes for touch control.
同样基于上述显示面板的结构，第一电极包括多个排列成行且相互绝缘的子电极，处于同一列的多个子电极通过第一电极连接线彼此电连接，处于不同列的多个子电极彼此电性隔离；多个第二电极彼此电连接，多个第三电极通过第三电极连接线彼此电连接，驱动方法包括：在第一阶段，为第一电极和第二电极提供公共参考电压；在第二阶段，为第一电极提供触控驱动信号，为第三电极提供触控感应信号。Also based on the above-mentioned structure of the display panel, the first electrode includes a plurality of sub-electrodes arranged in rows and insulated from each other, the plurality of sub-electrodes in the same column are electrically connected to each other through the first electrode connection line, and the plurality of sub-electrodes in different columns are electrically connected to each other. isolation; a plurality of second electrodes are electrically connected to each other, and a plurality of third electrodes are electrically connected to each other through a third electrode connection line. The driving method includes: in the first stage, providing a common reference voltage for the first electrode and the second electrode; In the second stage, a touch driving signal is provided for the first electrode, and a touch sensing signal is provided for the third electrode.
由于阵列基板包括多条数据线，第一电极连接线与数据线依次间隔设置；阵列基板中还设置有栅线，栅线与第一电极连接线和数据线交叉设置并将阵列基板划分为多个子像素区域，子像素区域内设置有薄膜晶体管，同一数据线两侧的子像素区域中，相邻行子像素区域中的薄膜晶体管对角设置，驱动方法包括：在第一阶段，通过同一数据线向相邻列的薄膜晶体管的源极输出数据信号，通过不同的栅线向相邻行的薄膜晶体管的栅极输出扫描信号；在第二阶段，通过第一电极连接线向一列第一电极输出驱动信号，通过第三电极连接线第三电极输出感应信号。Since the array substrate includes a plurality of data lines, the first electrode connection lines and the data lines are sequentially arranged at intervals; the array substrate is also provided with gate lines, and the gate lines are arranged to cross the first electrode connection lines and the data lines, and the array substrate is divided into multiple sub-pixel regions, thin film transistors are arranged in the sub-pixel regions, in the sub-pixel regions on both sides of the same data line, the thin-film transistors in the sub-pixel regions of adjacent rows are diagonally arranged, and the driving method includes: in the first stage, through the same data line line to output data signals to the source electrodes of thin film transistors in adjacent columns, and output scan signals to the gate electrodes of adjacent row thin film transistors through different gate lines; The drive signal is output, and the sensing signal is output from the third electrode through the third electrode connection line.
在上述的驱动方法中，第一时间段大于等于第二时间段，第一时间段与第二时间段之和等于帧周期。In the above driving method, the first time period is greater than or equal to the second time period, and the sum of the first time period and the second time period is equal to the frame period.
与现有技术中ADS模式液晶显示装置中公共电极为板状结构相比，在本实施例中，公共电极为由第一电极和第二电极共同构成的类似板状的栅网结构，第二电极中间隔形成了分割设置的多个用于触控的第一电极（驱动电极Tx），该驱动电极Tx与彩膜基板内侧的第三电极（感应电极Rx），实现触控。即将现有技术中整面为板状分布的公共电极设计为方块图形，其中的一部分方块（小方块）电极通过纵向的与原数据线位置相当的第一电极连接线进行连接，作为触控用的驱动电极Tx，该驱动电极Tx与设置于彩膜基板中的网格状的感应电极Rx公共实现触控目的；而相邻的驱动电极Tx之间间隔分布的另一部分方块（大方块）电极作为显示用的公共电极Vcom，并同时在触控时间段维持一定的电压值，以保证触控的灵敏度。其中，公共电极Vcom与感应电极Rx的延伸方向一致，且在空间位置上对应设置，以便能最大限度的降低驱动电极Tx与感应电极Rx之间的耦合电容。Compared with the common electrode in the ADS mode liquid crystal display device in the prior art which is a plate-shaped structure, in this embodiment, the common electrode is a similar plate-shaped grid structure composed of the first electrode and the second electrode. A plurality of first electrodes (driving electrodes Tx) for touch control are formed at intervals among the electrodes, and the driving electrodes Tx and the third electrodes (sensing electrodes Rx) inside the color filter substrate realize touch control. That is to say, in the prior art, the common electrodes distributed on the entire surface in a plate shape are designed as a square pattern, and a part of the square (small square) electrodes are connected through the first electrode connecting line in the longitudinal direction corresponding to the position of the original data line, as a touch control. The drive electrode Tx of the drive electrode Tx and the grid-shaped sensing electrode Rx arranged in the color filter substrate share the purpose of touch control; and another part of the square (large square) electrodes distributed between adjacent drive electrodes Tx It serves as the common electrode Vcom for display, and maintains a certain voltage value during the touch time period to ensure touch sensitivity. Wherein, the extension direction of the common electrode Vcom is consistent with that of the sensing electrode Rx, and is correspondingly arranged in a spatial position, so as to minimize the coupling capacitance between the driving electrode Tx and the sensing electrode Rx.
简言之，在本实施例的显示面板中，通过采用感应电极Rx横切排布，驱动电极Tx纵切排布,并将感应电极Rx设置于宽度较大的横向BM区域内，还利用双栅型（Dual Gate）结构采用间隔设置的第一电极连接线（冗余数据线）连接相邻两列子像素区域中的薄膜晶体管，将驱动电极Tx的驱动信号通过第一电极连接线直接输入，不仅保证显示用公共电极信号与触控用驱动信号输入的同步性，而且也大大降低了驱动电极Tx的阻值，在保证正常的触控功能和显示功能的条件下，可有效降低显示时感应电极Rx可能造成的对显示画面的阻碍的不良。In short, in the display panel of this embodiment, the sensing electrodes Rx are arranged transversely, the driving electrodes Tx are arranged vertically, and the sensing electrodes Rx are arranged in the lateral BM region with a large width. The dual gate structure adopts the first electrode connection lines (redundant data lines) arranged at intervals to connect the thin film transistors in the sub-pixel regions of two adjacent columns, and the driving signal of the driving electrode Tx is directly input through the first electrode connection lines. It not only ensures the synchronization of the common electrode signal for display and the drive signal input for touch control, but also greatly reduces the resistance of the drive electrode Tx, which can effectively reduce the inductance during display under the condition of ensuring normal touch function and display function. Defects that the electrode Rx may cause to obstruct the display screen.
本实施例的显示面板，只需在原用于形成公共电极的金属膜层的基础上，在构图工艺中采用掩模板将该金属膜层做矩形分割处理，并应用冗余数据线实现驱动电极之间的连接，保证用于作为显示用的公共电极与作为触控用的驱动电极彼此电性隔离，即能够同时满足触控功能和显示功能的要求，而不需要增加额外的工艺制程，不仅工艺简化，而且容易保证良品率。In the display panel of this embodiment, on the basis of the metal film layer originally used to form the common electrode, the metal film layer is divided into rectangles by using a mask in the patterning process, and redundant data lines are used to realize the connection between the driving electrodes. The connection between them ensures that the common electrode used for display and the drive electrode used as touch are electrically isolated from each other, that is, the requirements of touch function and display function can be met at the same time without adding additional process, not only the process Simplified, and it is easy to ensure the yield rate.
实施例2：Example 2:
本实施例提供一种显示装置，该显示装置包括实施例1中的显示面板。本实施例以高级超维场转换（ADvanced SuperDimension Switch，ADSDS，简称ADS）模式的液晶显示装置为例进行详细说明。This embodiment provides a display device, which includes the display panel in Embodiment 1. In this embodiment, a liquid crystal display device in an advanced superdimension switch (ADvanced SuperDimension Switch, ADSDS, ADS for short) mode is taken as an example to describe in detail.
其中，该显示装置可以为：液晶面板、电子纸、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。Wherein, the display device may be any product or component with a display function such as a liquid crystal panel, electronic paper, a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, and the like.
在该高级超维场转模式的液晶显示装置中，通过狭缝电极边缘所产生的电场以及狭缝电极层与板状电极层间产生的电场形成多维电场，使液晶层内狭缝电极间、电极正上方所有取向液晶分子都能够产生旋转，从而提高了液晶工作效率并增大了透光效率。高级超维场开关技术可以提高TFT-LCD产品的画面品质，具有高分辨率、高透过率、低功耗、宽视角、高开口率、低色差、无挤压水波纹（push Mura）等优点。In the liquid crystal display device of this advanced ultra-dimensional field switching mode, the electric field generated by the edge of the slit electrode and the electric field generated between the slit electrode layer and the plate electrode layer form a multi-dimensional electric field, so that between the slit electrodes in the liquid crystal layer, All aligned liquid crystal molecules directly above the electrodes can be rotated, thereby improving the working efficiency of the liquid crystal and increasing the light transmission efficiency. Advanced ultra-dimensional field switching technology can improve the picture quality of TFT-LCD products, with high resolution, high transmittance, low power consumption, wide viewing angle, high aperture ratio, low color difference, no push Mura, etc. advantage.
如图6所示，在该显示装置中还包括栅极驱动器41、源极驱动器42和触控控制器45，栅极驱动器41与多条栅线17电连接，栅极驱动器41产生扫描信号电压，通过栅线17传送至与栅线17电连接的薄膜晶体管的栅极，向薄膜晶体管12提供扫描信号，以选通与该栅线17连接的薄膜晶体管12的子像素区域；源极驱动器42与数据线18电连接，源极驱动器42产生数据信号电压，通过数据线18传送至与该数据线18电连接的两列子像素区域中的薄膜晶体管12的源极，获得显示画面数据信号；触控控制器45和第一电极连接线131电连接，触控控制器45产生触控驱动信号，通过第一电极连接线131传送至与该第一电极连接线131电连接的第一电极13。As shown in Figure 6, the display device also includes a gate driver 41, a source driver 42 and a touch controller 45, the gate driver 41 is electrically connected to a plurality of gate lines 17, and the gate driver 41 generates a scanning signal voltage , transmitted to the gate of the thin film transistor electrically connected to the gate line 17 through the gate line 17, providing a scanning signal to the thin film transistor 12 to gate the sub-pixel region of the thin film transistor 12 connected to the gate line 17; the source driver 42 Electrically connected to the data line 18, the source driver 42 generates a data signal voltage, which is transmitted to the source electrodes of the thin film transistors 12 in the two columns of sub-pixel regions electrically connected to the data line 18 through the data line 18 to obtain the display screen data signal; The touch control controller 45 is electrically connected to the first electrode connecting line 131 , and the touch controller 45 generates a touch driving signal, which is transmitted to the first electrode 13 electrically connected to the first electrode connecting line 131 through the first electrode connecting line 131 .
在本实施例中，显示装置还包括电压转换器43，电压转换器43分别与源极驱动器42和触控控制器45电连接。电压转换器43与源极驱动器42电连接，用于接收源极驱动器42发出的数据信号；电压转换器43通过源极驱动器42还与薄膜晶体管12的源极电连接，用于向薄膜晶体管12的源极发送数据信号；电压转换器43与触控控制器45电连接，触控控制器45经电压转换器43获取感应信号和发送驱动信号。In this embodiment, the display device further includes a voltage converter 43 , and the voltage converter 43 is electrically connected to the source driver 42 and the touch controller 45 respectively. The voltage converter 43 is electrically connected with the source driver 42 for receiving the data signal sent by the source driver 42; the voltage converter 43 is also electrically connected with the source of the thin film transistor 12 through the source driver 42 for supplying The source of the voltage converter 43 is electrically connected to the touch controller 45, and the touch controller 45 obtains the induction signal and sends the driving signal through the voltage converter 43.
这里应该理解的是，本实施例中触控控制器45同时集成了触控感应和触控驱动的功能，但是，本实施例并不限定触控控制器45必须为集成式，为降低芯片成本，本实施例中的触控控制器45也可以分别由具有接收触控感应的功能的芯片和具有发送触控驱动的功能的芯片来组合实现。It should be understood here that the touch controller 45 in this embodiment integrates the functions of touch sensing and touch driving at the same time, but this embodiment does not limit that the touch controller 45 must be integrated, in order to reduce chip cost In this embodiment, the touch controller 45 may also be realized by combining a chip with a function of receiving touch sensing and a chip with a function of sending touch drive.
为了便于控制第一电极13在不同的时间段分别起到触控作用和显示作用，优选地，如图6所示，显示装置还包括发射器44，发射器44与电压转换器43电连接，用于向电压转换器43发出控制信号，并通过电压转换器43在触控时间段分别为第一电极13提供触控信号；在显示时间分别为第一电极13和第二电极14提供公共电压信号。In order to facilitate the control of the first electrode 13 to perform touch control and display functions in different time periods, preferably, as shown in FIG. 6 , the display device further includes an emitter 44, which is electrically connected to the voltage converter 43, Used to send control signals to the voltage converter 43, and provide touch signals to the first electrode 13 respectively through the voltage converter 43 during the touch time period; provide common voltages to the first electrode 13 and the second electrode 14 respectively during the display time Signal.
为保证显示装置的正常显示，将显示装置在显示一帧画面的帧周期的时间分成两个时间段，如图7所示，第一时间段为显示时间段，第二时间段为触控时间段。其中，第一时间段大于等于第二时间段，第一时间段与第二时间段之和等于帧周期。In order to ensure the normal display of the display device, the display device is divided into two time periods when the frame period of displaying a frame is displayed. As shown in FIG. 7, the first time period is the display time period, and the second time period is the touch time period. part. Wherein, the first time period is greater than or equal to the second time period, and the sum of the first time period and the second time period is equal to the frame period.
在本实施例中，电压转换器43可以将来自显示驱动芯片（图6中未示出）的公共电压信号，在第一时间段内提供至第一电极13和第二电极14，以进行画面显示；而在第二时间段内，电压转换器43可以接收由第一电极13（此时第一电极13为驱动电极Tx）和第三电极24（此时第三电极24为感应电极Rx）因受人体触碰而获得的与参考电压值不同的电压，并经发射器44计算得到触摸位置坐标，以进行触摸控制。也就是说，在显示装置工作过程中，第一电极13和第二电极14作为公共电极与像素电极16产生电场，驱动液晶分子31发生偏转，以进行画面显示；而当人体在显示面板上发生触碰时，由于第一电极13与第三电极24之间形成的电场发生变化，由此感应触碰的发生，进而达到触摸控制的目的。In this embodiment, the voltage converter 43 can provide the common voltage signal from the display driver chip (not shown in FIG. display; and in the second time period, the voltage converter 43 can receive the voltage generated by the first electrode 13 (the first electrode 13 is the driving electrode Tx at this time) and the third electrode 24 (the third electrode 24 is the sensing electrode Rx at this time) A voltage different from the reference voltage value obtained by being touched by the human body is calculated by the transmitter 44 to obtain the touch position coordinates for touch control. That is to say, during the working process of the display device, the first electrode 13 and the second electrode 14 are used as common electrodes to generate an electric field with the pixel electrode 16 to drive the liquid crystal molecules 31 to deflect to display images; When touched, the electric field formed between the first electrode 13 and the third electrode 24 changes, thereby sensing the occurrence of a touch, and then achieving the purpose of touch control.
在本实施例的显示装置的驱动过程中，在第一时间段内，第一电极13和第二电极14作为显示用的公共电极，当栅线17向薄膜晶体管12提供扫描信号时，阵列基板1中不同行的薄膜晶体管依次顺序逐行导通；同时，电压转换器43在接收到发射器44发出的控制信号的情况下，接收来自显示驱动芯片的公共电压信号和来自源极驱动器的数据信号，并通过数据线18向薄膜晶体管12的源极提供数据信号电压（或者说灰阶信号），通过第一电极连接线131和公共电极线分别向第一电极13和第二电极14提供公共参考电压，从图7中可见，该时间段（显示阶段）上的直流电压值较小（3V左右）；同时与薄膜晶体管12的漏极连接的像素电极16得电，与第一电极13和第二电极14（第二电极14与像素电极在正投影方向上至少部分重叠）共同作用形成电场，作用在液晶层3上，驱动阵列基板1与彩膜基板2之间的液晶分子31，以使得液晶分子31的偏转方向发生改变，实现画面显示。In the driving process of the display device of this embodiment, in the first time period, the first electrode 13 and the second electrode 14 are used as common electrodes for display, and when the gate line 17 provides the scan signal to the thin film transistor 12, the array substrate The thin film transistors in different rows in 1 are sequentially turned on row by row; at the same time, the voltage converter 43 receives the common voltage signal from the display driver chip and the data from the source driver in the case of receiving the control signal sent by the transmitter 44 signal, and provide the data signal voltage (or grayscale signal) to the source of the thin film transistor 12 through the data line 18, and provide the common Reference voltage, as can be seen from Figure 7, the DC voltage value in this time period (display stage) is small (about 3V); at the same time, the pixel electrode 16 connected to the drain of the thin film transistor 12 is powered, and the first electrode 13 and The second electrode 14 (the second electrode 14 and the pixel electrode at least partially overlap in the orthographic projection direction) work together to form an electric field, which acts on the liquid crystal layer 3 to drive the liquid crystal molecules 31 between the array substrate 1 and the color filter substrate 2, so that The deflection direction of the liquid crystal molecules 31 is changed to realize screen display.
在第二时间段内，阵列基板1中第一电极13作为触控用的驱动电极Tx，从图7中可见，该时间段（触控阶段）上的直流电压值较大（7V-8V），彩膜基板2中的第三电极24作为触控用的感应电极Rx（图7中第三电极信号的波形图中1，2…n-1，n代表n次第三电极的逐行扫描），由于相邻的第一电极13和第三电极24依次交替设置，并在空间上交叉相对（没有直接的正对面积），从而形成一对互感式的电容极板；相应的，与第一电极13电连接的第一电极连接线131为驱动信号线，与第三电极24电连接的第三电极连接线241为感应信号线，感应电极Rx通过感应信号线经由电压转换器43与触控控制器45相连通，驱动电极Tx通过驱动信号线经由电压转换器43与触控控制器45相连通。电压转换器43在接收到发射器44发出的控制信号的情况下，通过驱动信号线对作为驱动电极的第一电极13加载触控驱动信号，并检测感应信号线返回的与第三电极24之间的感应电容（此时第一电极13和第三电极24分别为感应电容的两个极板）耦合出的电压信号，在此过程中，有人体接触触控屏时，人体电场就会作用在感应电容上，使感应电容的电容值发生变化，进一步使得耦合出的电压值发生变化，进而改变触控感应信号线返回电压转换器43的电压信号，根据电压信号的变化，就可以确定触点位置，实现触摸控制。In the second time period, the first electrode 13 in the array substrate 1 is used as the driving electrode Tx for touch control. It can be seen from FIG. 7 that the DC voltage value in this time period (touch stage) is relatively large (7V-8V). , the third electrode 24 in the color filter substrate 2 is used as the sensing electrode Rx for touch control (1, 2...n-1 in the waveform diagram of the third electrode signal in FIG. 7, n represents n times of progressive scanning of the third electrode ), since the adjacent first electrodes 13 and third electrodes 24 are arranged alternately in sequence, and they cross each other in space (there is no direct facing area), thus forming a pair of mutual inductance capacitive plates; correspondingly, with the first The first electrode connection line 131 electrically connected to one electrode 13 is a driving signal line, and the third electrode connection line 241 electrically connected to the third electrode 24 is a sensing signal line, and the sensing electrode Rx is connected to the contactor via the voltage converter 43 through the sensing signal line. The touch controller 45 is connected, and the driving electrode Tx is connected to the touch controller 45 through the voltage converter 43 through the driving signal line. When the voltage converter 43 receives the control signal sent by the transmitter 44, it applies the touch driving signal to the first electrode 13 as the driving electrode through the driving signal line, and detects the difference between the return of the sensing signal line and the third electrode 24. The voltage signal coupled by the inductive capacitance between them (the first electrode 13 and the third electrode 24 are the two plates of the inductive capacitance at this time). During this process, when a human body touches the touch screen, the electric field of the human body will act On the sensing capacitor, the capacitance value of the sensing capacitor is changed, and the coupled voltage value is further changed, thereby changing the voltage signal returned from the touch sensing signal line to the voltage converter 43. According to the change of the voltage signal, the touch can be determined. Click the position to achieve touch control.
这里应该理解的是，在第一时间段中，第三电极24上的施加有很微弱的电压（300mV）；同时，在第二时间段中，第二电极14上的电压保持为第一时间段中的电压值，如此设置，减小了基准电压的变化幅度，由于触控时间段相对显示时间段较短，利用液晶分子偏转的惯性，使得在一帧画面时间内因触控切换对显示造成的影响较小。It should be understood here that, in the first time period, a very weak voltage (300mV) is applied to the third electrode 24; meanwhile, in the second time period, the voltage on the second electrode 14 remains at the first time The voltage value in the segment, so set, reduces the variation range of the reference voltage. Since the touch time period is shorter than the display time period, the inertia of the liquid crystal molecule deflection is used to cause the display to be damaged due to touch switching within one frame time. has less impact.
在本实施例所提供的显示装置中，可以通过发射器44和电压转换器43共同作用以实现上述步骤。In the display device provided in this embodiment, the above steps can be realized through the cooperation of the transmitter 44 and the voltage converter 43 .
这里应该理解的是，当人体手指触摸到不同像素区域的第一电极或第三电极时，由于通常人体手指与显示面板具有一定的接触面积，使得触摸具有连续性（即一般是不小于感应精度的人体触碰），如前所述，第一电极或第三电极分别充当驱动电极或感应电极的角色，在显示装置具有多个按一定规则排列的像素区域时，能保证感应电极和驱动电极相邻间隔设置，因此，即使人体触摸面积隶属于不同的像素区域，也不会影响触控的效果。It should be understood here that when a human finger touches the first electrode or the third electrode in a different pixel area, since the human finger usually has a certain contact area with the display panel, the touch has continuity (that is, generally not less than the sensing accuracy human body touch), as mentioned above, the first electrode or the third electrode acts as the driving electrode or the sensing electrode respectively, and when the display device has a plurality of pixel areas arranged according to a certain rule, it can ensure that the sensing electrode and the driving electrode Adjacent intervals are set, so even if the touch area of the human body belongs to different pixel areas, it will not affect the touch effect.
对于第一时间段与第二时间段的设置，可以根据具体的显示装置应用环境以及对响应精度、触控精度等条件来确定。例如，以频率为60Hz为例，显示装置显示一帧的帧周期时间为16.7ms，则可以选取其中12.7ms作为显示时间段，其他的4ms作为触控时间段，当然也可以根据显示装置中控制用的IC芯片的处理能力适当的调整两者的时长，在此不做具体限定。The setting of the first time period and the second time period may be determined according to the specific application environment of the display device and conditions such as response accuracy and touch accuracy. For example, taking the frequency as 60Hz as an example, the display device displays a frame cycle time of 16.7ms, you can select 12.7ms as the display time period, and the other 4ms as the touch time period, of course, it can also be controlled according to the display device. The processing capability of the IC chip used properly adjusts the duration of both, which is not specifically limited here.
该显示装置具有良好的图像显示效果，以及较高的触控灵敏度。The display device has good image display effect and high touch sensitivity.
可以理解的是，以上实施方式仅仅是为了说明本实用新型的原理而采用的示例性实施方式，然而本实用新型并不局限于此。对于本领域内的普通技术人员而言，在不脱离本实用新型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实用新型的保护范围。It can be understood that, the above embodiments are only exemplary embodiments adopted to illustrate the principles 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 utility model, and these variations and improvements are also regarded as the protection scope of the present utility model.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420179184.8UCN203894514U (en) | 2014-04-14 | 2014-04-14 | Display panel and display device |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420179184.8UCN203894514U (en) | 2014-04-14 | 2014-04-14 | Display panel and display device |
| Publication Number | Publication Date |
|---|---|
| CN203894514Utrue CN203894514U (en) | 2014-10-22 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420179184.8UExpired - Fee RelatedCN203894514U (en) | 2014-04-14 | 2014-04-14 | Display panel and display device |
| Country | Link |
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| CN (1) | CN203894514U (en) |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | Granted publication date:20141022 | |
| CF01 | Termination of patent right due to non-payment of annual fee |