WO2016119333A1 - 内嵌式触摸屏及其驱动方法以及显示装置 - Google Patents

内嵌式触摸屏及其驱动方法以及显示装置 Download PDF

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Publication number
WO2016119333A1
WO2016119333A1 PCT/CN2015/078793 CN2015078793W WO2016119333A1 WO 2016119333 A1 WO2016119333 A1 WO 2016119333A1 CN 2015078793 W CN2015078793 W CN 2015078793W WO 2016119333 A1 WO2016119333 A1 WO 2016119333A1
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Prior art keywords
touch
electrode
sub
electrodes
substrate
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PCT/CN2015/078793
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English (en)
French (fr)
Inventor
杨盛际
董学
王海生
丁小梁
刘英明
赵卫杰
李昌峰
刘伟
Original Assignee
京东方科技集团股份有限公司
北京京东方光电科技有限公司
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Priority to US14/912,993 priority Critical patent/US10013086B2/en
Publication of WO2016119333A1 publication Critical patent/WO2016119333A1/zh

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Definitions

  • the present invention relates to the field of touch technologies, and in particular, to an in-cell touch panel and a driving method thereof, and a display device.
  • the Touch Screen Panel With the rapid development of display technology, the Touch Screen Panel has gradually spread throughout people's lives.
  • the touch screen can be divided into an add-on touch panel, an on-cell touch panel, and an in-cell touch panel according to the composition structure.
  • the external touch screen is produced by separately separating the touch screen from the liquid crystal display (LCD), and then being bonded together to become a liquid crystal display with touch function.
  • the external touch screen has higher production cost and light transmittance. Low, thicker modules and other shortcomings.
  • the in-cell touch screen embeds the touch electrode of the touch screen inside the liquid crystal display, which can reduce the overall thickness of the module, and can greatly reduce the manufacturing cost of the touch screen, and is favored by major panel manufacturers.
  • the existing in-cell touch screen mainly utilizes the principle of mutual capacitance to realize the detection of the touch position of the finger.
  • the touch TFT and the touch sensing line are directly added to the existing TFT (Thin Film Transistor) array substrate; that is, two layers are formed on the surface of the TFT array substrate.
  • Transparent conductive electrodes generally strip-shaped ITO (Indium Tin Oxides) electrodes
  • the two ITO electrodes are respectively used as a touch screen driving line and a touch sensing line of the touch screen, and two ITO electrodes The intersection of the opposite faces forms a sensing capacitor.
  • the working process is: when loading the touch driving signal to the ITO electrode as the touch driving line, detecting the voltage signal that the touch sensing line is coupled through the sensing capacitor, in the process, when the human body touches the touch screen, the human body electric field Will act on the sensing capacitor to make the induction
  • the capacitance value of the capacitor changes, thereby changing the voltage signal coupled by the touch sensing line, and the position of the contact can be determined according to the change of the voltage signal.
  • the structural design of the above-mentioned existing in-cell touch panel requires a new film layer on the existing TFT array substrate, which requires an additional process to be added when manufacturing the TFT array substrate, which increases production cost and is not conducive to improving production efficiency. .
  • an object of an embodiment of the present invention provides an in-cell touch panel capable of achieving low cost and high production efficiency.
  • Another object of the embodiments of the present invention is to provide a driving method of an in-cell touch panel capable of achieving low cost and high production efficiency.
  • Still another object of embodiments of the present invention provides a display device capable of achieving lower cost and higher production efficiency.
  • an embodiment of the present invention provides an in-cell touch panel including a first substrate and a second substrate disposed opposite to each other, and a transparent conductive layer disposed on a side of the first substrate facing the second substrate, and a plurality of first touch electrodes insulated and disposed in different layers;
  • the transparent conductive layer is divided into a plurality of mutually independent sub-electrodes arranged in a matrix; the sub-electrodes located in the odd rows are the second touch sub-electrodes, the sub-electrodes located in the even rows are the common electrodes, and the second contacts in the same column
  • the control electrode constitutes a second touch electrode; or the sub-electrodes located in the even rows are the second touch sub-electrodes, the sub-electrodes located in the odd rows are the common electrodes, and the second touch sub-electrodes located in the same column form a
  • the second touch electrode; or the sub-electrode in the odd-numbered column is the second touch sub-electrode; the sub-electrode in the even-numbered column is the common electrode, and the second touch sub-electrodes in the same row form a second touch electrode
  • the sub-electrodes located in the even-numbered columns are the second touch sub-e
  • the extending direction of the first touch electrode is perpendicular to the extending direction of the second touch electrode, and each first The touch electrodes are respectively disposed opposite to a row or a column of common electrodes perpendicular to the second touch electrodes;
  • the first touch electrode is a touch driving electrode
  • the second touch electrode is a touch sensing electrode
  • the first touch electrode is a touch sensing electrode
  • the second touch electrode is a touch driving electrode
  • each of the first touch electrodes is disposed on a side of the second substrate facing the first substrate.
  • each of the first touch electrodes is composed of a plurality of strip-shaped first touch sub-electrodes.
  • each of the first touch electrodes has a grid structure.
  • the material of the first touch electrode is a metal or a transparent conductive material, in order to avoid the influence of the first touch electrode on the display panel.
  • the embedded touch screen further includes: a black matrix layer on a side of the first substrate facing the second substrate, or a side of the second substrate facing the first substrate;
  • the pattern of each of the first touch electrodes is located in a region where the orthographic projection of the first substrate is located in the pattern of the black matrix layer.
  • the first substrate is an array substrate, and the second substrate is an opposite substrate;
  • the first substrate is an opposite substrate, and the second substrate is an array substrate.
  • the in-cell touch panel in a case where the first substrate is an array substrate and the second substrate is a counter substrate, the in-cell touch panel further includes :
  • a common electrode line and a wire disposed on a side of the first substrate facing the second substrate and disposed in a different layer from the transparent conductive layer; wherein the common electrode is electrically connected to the corresponding common electrode line through the via hole, and the second touch electrode passes through the via hole Electrically connected to the corresponding wire.
  • the wires are disposed in the same layer as the common electrode lines, and the extending directions of the wires and the common electrode lines are the same as the extending direction of the second touch electrodes.
  • the in-cell touch panel provided by the embodiment of the present invention further includes: a plurality of sub-arrays arranged in a matrix on a side of the first substrate facing the second substrate a pixel, and a gate signal line and a data signal line that cross each other;
  • the wire extends in the same direction as the gate signal line or the same as the data signal line.
  • two gate signal lines are disposed between sub-pixels of adjacent rows; and each adjacent two columns of sub-pixels a pixel group sharing a data signal line between the two columns of sub-pixels;
  • the wire and the common electrode line are alternately disposed at a gap between adjacent pixel groups, and are disposed in the same layer as the data signal line.
  • two data signal lines are disposed between sub-pixels of adjacent columns; and each adjacent two rows of sub-pixels are a pixel group sharing a gate signal line between the two rows of sub-pixels;
  • the wires and the common electrode lines are alternately disposed at a gap between adjacent pixel groups, and are disposed in the same layer as the gate signal lines.
  • a gap width between the first touch electrode and the adjacent second sub-touch electrode corresponds to a width of three sub-pixels.
  • an embodiment of the present invention further provides a driving method for the above-mentioned in-cell touch panel, the driving method comprising: performing display scanning and touch scanning in a time division in a frame time; wherein:
  • the touch scan signal is loaded on the touch driving electrode, and the touch sensing electrode is coupled to the touch scan signal and output.
  • an embodiment of the present invention further provides a display device, including Any of the above-mentioned in-cell touch panels provided by the embodiments of the present invention.
  • the present invention since the transparent conductive layer is divided into the second touch electrode and the common electrode, the common electrode layer connected to the entire whole surface is divided to form the second touch electrode and the common electrode which are insulated from each other.
  • the common touch signal is applied to the second touch electrode and the common electrode.
  • the touch scan signal is loaded on the first touch electrode or the second touch electrode, and the second touch electrode or The first touch electrode couples the touch scan signal and outputs the touch function and the display function through time-division driving.
  • the second touch electrode is fabricated by changing the structure of the existing common electrode layer. Therefore, on the basis of the existing preparation process, the additional process is not required to be separately prepared.
  • the second touch electrode saves production costs and improves production efficiency.
  • the above-mentioned in-cell touch panel divides the transparent conductive layer into a plurality of mutually independent sub-electrodes arranged in a matrix, which not only ensures uniform distribution of the sub-electrodes of the entire touch screen, but also constitutes a second touch due to the sub-electrodes constituting the common electrode
  • the sub-electrodes of the control electrode have the same structure, so that the load of the common electrode and the second touch sub-electrode can be ensured.
  • the first touch electrode is disposed at a position opposite to the common electrode to prevent the first touch electrode and the second touch electrode from overlapping, thereby minimizing the first touch electrode and the second touch. Coupling capacitance between the electrodes.
  • FIG. 1 is a schematic cross-sectional structural view of an in-cell touch panel according to an embodiment of the present invention
  • FIG. 2a is a schematic top plan view of an in-cell touch panel according to an embodiment of the present invention.
  • FIG. 2b is a second schematic structural view of an in-cell touch panel according to an embodiment of the present invention.
  • FIG. 3a is a third schematic structural view of an in-cell touch panel according to an embodiment of the present invention.
  • FIG. 3b is a fourth schematic structural view of an in-cell touch panel according to an embodiment of the present invention.
  • FIG. 4a is a schematic top view of the in-cell touch panel according to an embodiment of the present invention.
  • 4b is a schematic top view of the in-cell touch panel according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart diagram of a driving method of an in-cell touch panel according to an embodiment of the present invention.
  • each film layer in the drawings do not reflect the true scale, and are merely intended to illustrate the present invention.
  • An embodiment of the present invention provides an in-cell touch panel, as shown in FIG. 1 , including a first substrate 1 and a second substrate 2 opposite to each other; and a transparent portion disposed on a side of the first substrate 1 facing the second substrate 2
  • the conductive layer 3 is a plurality of first touch electrodes 01 insulated from the transparent conductive layer 3 and disposed in different layers.
  • the transparent conductive layer 3 is divided into a plurality of mutually independent sub-electrodes arranged in a matrix;
  • the sub-electrodes located in the odd rows are the second touch sub-electrodes 021
  • the sub-electrodes located in the even rows are the common electrodes 03
  • the second touch sub-electrodes 021 in the same column form a second touch.
  • the sub-electrodes located in the odd-numbered columns are the second touch sub-electrodes 021
  • the sub-electrodes located in the even-numbered columns are the common electrodes 03
  • the second touch sub-electrodes 021 located in the same row form a second Touch electrode 02.
  • the sub-electrodes located in the even rows are the second touch sub-electrodes 021, the sub-electrodes located in the odd rows are the common electrodes 03, and the second touch sub-electrodes 021 located in the same column.
  • a second touch electrode 02 is formed.
  • the sub-electrodes located in the even columns are the second touch sub-electrodes 021, the sub-electrodes located in the odd-numbered columns are the common electrodes 03, and the second touches are located in the same row.
  • the electrode 021 constitutes a second touch electrode 02.
  • the second touch sub-electrode 021 and the common electrode 03 are staggered in a row, and the second touch sub-electrodes 021 in the same column form a second touch electrode 02; or, the second touch sub- The electrode 021 and the common electrode 03 are staggered in a row, and the second touch sub-electrodes 021 located in the same row form a second touch electrode 02.
  • the extending direction of the first touch electrode 01 is perpendicular to the extending direction of the second touch electrode 02, and each of the first touch electrodes 01 is opposite to a row or a column of common electrodes 03 perpendicular to the second touch electrode 02.
  • the first touch electrode 01 is a touch driving electrode
  • the second touch electrode 02 is a touch sensing electrode
  • the first touch electrode 02 is a touch sensing electrode
  • the second touch electrode 02 is a touch driving electrode.
  • the common electrode layer connected to the entire entire surface is divided to form a second insulated circuit.
  • the touch electrode and the common electrode are loaded with a common electrode signal for the second touch electrode and the common electrode during display, and the touch scan signal is loaded on the first touch electrode (or the second touch electrode) during touch
  • the second touch electrode (or the first touch electrode) is coupled to the touch scan signal and output, and the touch function and the display function are implemented by time-sharing driving.
  • the second touch electrode is fabricated by modifying the structure of the existing common electrode layer. Therefore, on the basis of the existing preparation process, an additional process is not required to be separately prepared. The second touch electrode saves production costs and improves production efficiency.
  • the above-mentioned in-cell touch panel divides the transparent conductive layer into a plurality of mutually independent sub-electrodes arranged in a matrix, which not only ensures uniform distribution of the sub-electrodes of the entire touch screen, but also constitutes a second touch due to the sub-electrodes constituting the common electrode
  • the sub-electrodes of the control electrode have the same structure, so that the load of the common electrode and the second touch sub-electrode can be ensured.
  • the first touch electrode is disposed at a position opposite to the common electrode to prevent the first touch electrode and the second touch electrode from overlapping, thereby minimizing the first touch electrode and the second touch. Coupling capacitance between the electrodes.
  • the dividing line when dividing the transparent conductive layer, the dividing line generally avoids the open area of the display, and is disposed in the graphic area of the black matrix layer, that is, the gap between the sub-electrodes is on the first substrate or the second
  • the orthographic projections on the substrate will typically be located at the gap between the sub-pixels.
  • the in-cell touch panel provided by the embodiment of the present invention may be: the first substrate may be an array substrate, and the second substrate may be an opposite substrate; of course, the first substrate may also be an opposite substrate, and the second substrate may be
  • the array substrate is not limited herein.
  • the first touch electrode and the second touch electrode may be disposed on the same substrate, or may be separately disposed on different substrates. Not limited.
  • each of the first touch electrodes 01 is disposed on a side of the second substrate 2 facing the first substrate 1 .
  • the above-mentioned in-cell touch panel provided by the embodiment of the invention is applicable to both a twisted nematic (TN) liquid crystal display and an advanced super-dimensional field switch (ADS) type liquid crystal display.
  • TN twisted nematic
  • ADS advanced super-dimensional field switch
  • HADS High-advanced Dimension Switch
  • IPS In-Plane Switch
  • the common electrode layer of the plate-like structure is located below the slit-shaped pixel electrode, that is, the common electrode is located at the lower substrate and the pixel electrode. There is also an insulating layer disposed between the common electrode and the pixel electrode.
  • the slit-shaped common electrode is located above the pixel electrode of the plate-like structure, that is, the pixel electrode is located between the lower substrate and the common electrode, and is further disposed between the pixel electrode and the common electrode. Insulation.
  • the in-cell touch panel provided by the embodiment of the present invention is more suitable for an ADS type or HADS type liquid crystal display screen, so that the common electrode layer on the array substrate in the prior art is separated to form the common electrode and The second touch electrode.
  • the material of the pole may be a metal material or a transparent conductive material, which is not limited herein.
  • the first touch electrode 01 may be disposed to cover the surface electrode structure of one row or one column of the common electrode 03, and may of course be disposed in a plurality of strip structures as shown in FIG. 3a, or as shown in FIG. 3b.
  • the grid structure shown is not limited herein.
  • each of the first touch electrodes 01 may be composed of a plurality of strip-shaped first touch sub-electrodes 011; or as shown in FIG. 3b, each of the first touch electrodes 01 is a grid structure.
  • each of the first touches is preferably composed of a plurality of strip-shaped first touch sub-electrodes.
  • the embedded touch screen may further include: a substrate facing the side of the second substrate, or a black matrix layer of the second substrate facing the side of the first substrate;
  • the pattern of each of the first touch electrodes is located in a region where the orthographic projection of the first substrate is located in the pattern of the black matrix layer.
  • the in-cell touch panel when the in-cell touch panel provided by the embodiment of the present invention is applied to an ADS type or HADS type liquid crystal display, that is, when the first substrate is an array substrate and the second substrate is a counter substrate As shown in FIG. 2a and FIG. 2b, the in-cell touch screen may further include:
  • a common electrode line 04 and a wire 05 disposed on a side of the first substrate 1 facing the second substrate 2 and disposed in a different layer from the transparent conductive layer 3; wherein the common electrode 03 passes through the via (see, for example, FIGS. 4a and 4b) and the corresponding The common electrode line 04 is electrically connected, and the second touch electrode 02 is electrically connected to the corresponding wire 05 through the via hole.
  • the common electrode may be electrically connected to the common electrode line through a plurality of via holes.
  • the second touch electrode may also pass through a plurality of via holes and wires. Electrical connection is not limited herein.
  • the wires are disposed in the same layer as the common electrode lines, and the extending directions of the wires and the common electrode lines are both second and second.
  • the touch electrodes extend in the same direction.
  • the wire is disposed in the same layer as the common electrode line, and the new preparation process can be omitted, and the wire and the common electrode line can be obtained only by changing the composition of the corresponding film layer, which simplifies the process steps and saves production. Cost increases production efficiency.
  • the extending directions of the wires and the common electrode lines are set to be the same as the extending direction of the second touch electrodes, which not only facilitates the connection between the wires and the second touch electrodes, but also ensures that the wires do not cross the common electrode lines, thereby avoiding Crosstalk occurs between the electrodes.
  • the in-cell touch panel provided by the embodiment of the present invention further includes: disposed on the first substrate 1 facing the second substrate, as shown in FIG. 4a and FIG. 4b a plurality of sub-pixels 4 arranged in a matrix on one side, and gate signal lines G and data signal lines D which are mutually intersected;
  • the wire 05 extends in the same direction as the gate signal line G or is the same as the data signal line D.
  • the extending direction of the wire and the common electrode line is set to be the same as the gate signal line, or the same as the data signal line, so that the wire and the common electrode line are located in the display area of the display screen, and the frame area is not occupied, thereby being minimized.
  • the width of the border of the display helps to achieve a narrow bezel design.
  • two gate signal lines G are disposed between the sub-pixels 4 of adjacent rows;
  • Each adjacent two columns of sub-pixels 4 is a pixel group, sharing a data signal line D between the two columns of sub-pixels 4;
  • the wire 05 and the common electrode line 04 are alternately disposed at a gap between adjacent pixel groups, and are disposed in the same layer as the data signal line D.
  • the wire 05 and the common electrode line 04 are alternately arranged adjacent to each other.
  • the wire 05 and the common electrode line 04 are electrically connected to the corresponding second touch electrode 02 and the common electrode 03 through the corresponding via holes V, respectively.
  • two data signal lines D are disposed between the sub-pixels 4 of adjacent columns;
  • the two rows of sub-pixels 4 are a group of pixels, sharing a gate signal line G between the two rows of sub-pixels;
  • the wire 05 and the common electrode line 04 are alternately disposed at a gap between adjacent pixel groups, and are disposed in the same layer as the gate signal line G.
  • the position of the gate signal lines between adjacent pixel groups can be saved.
  • the wire 05 and the common electrode line 04 are alternately disposed at a gap between adjacent pixel groups, and the wire 05 and the common electrode line 04 pass through the corresponding via hole V and the corresponding second touch electrode 02 and the common electrode, respectively. 03 electrical connection.
  • the gap width between the first touch electrode and the adjacent second sub-touch electrode directly affects the touch change rate. Therefore, the first touch electrode and the adjacent second sub-electrode
  • the gap width between the touch electrodes is required to ensure the amount of change in the touch capacitance while meeting the requirements of the rate of change.
  • a gap width between the first touch electrode and the adjacent second sub-touch electrode corresponds to a width of three sub-pixels.
  • an embodiment of the present invention further provides a driving method for the above-mentioned in-cell touch panel.
  • the driving method may include: displaying scanning and touch scanning in a time-sharing manner in one frame time. ;among them:
  • S501 Apply a common electrode signal to all sub-electrodes in the transparent conductive layer during a display scanning period;
  • the touch scan signal is loaded on the touch driving electrode during the touch scanning period, and the touch sensing electrode is coupled to the touch scan signal and output.
  • the execution order of step S501 and step S502 is not limited for one frame time period, and may be first displaying a scanning time period, a second touch scanning time period, or a touch scanning time period. Display the scan time period, no restrictions here, as long as each guarantee In the frame time, the execution order of S501 and S502 is the same.
  • an embodiment of the present invention further provides a display device, including the above-mentioned in-cell touch panel provided by the embodiment of the present invention.
  • the display device can be any product or component having a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.
  • a display function such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.
  • An in-cell touch panel, a driving method thereof, and a display device provided by the embodiment of the present invention are configured to divide a transparent conductive layer into a second touch electrode and a common electrode, which is equivalent to performing an existing common electrode layer connected to the entire surface. Dividing, forming a second touch electrode and a common electrode that are insulated from each other. When displaying, the second touch electrode and the common electrode are loaded with a common electrode signal, and when touched, the first touch electrode or the second touch The electrode is loaded with the touch scan signal, and the second touch electrode or the first touch electrode is coupled to the touch scan signal and output, and the touch function and the display function are realized by the time division drive.
  • the second touch electrode is fabricated by changing the structure of the existing common electrode layer. Therefore, on the basis of the existing preparation process, the additional process is not required to be separately prepared.
  • the second touch electrode saves production cost and improves production efficiency.
  • the above-mentioned in-cell touch panel divides the transparent conductive layer into a plurality of mutually independent sub-electrodes arranged in a matrix, which not only ensures uniform distribution of the sub-electrodes of the entire touch screen, but also constitutes a second touch due to the sub-electrodes constituting the common electrode
  • the sub-electrodes of the control electrode have the same structure, so that the load of the common electrode and the second touch sub-electrode can be ensured.
  • the first touch electrode is disposed at a position opposite to the common electrode to prevent the first touch electrode and the second touch electrode from overlapping, thereby minimizing the first touch electrode and the second touch. Coupling capacitance between the electrodes.

Abstract

一种内嵌式触摸屏及其驱动方法以及显示装置。将透明导电层（3）分割成第二触控电极（02）和公共电极（03），形成相互绝缘的第二触控电极（02）和公共电极（03）。触控时，对第一触控电极（01）或第二触控电极（02）加载触控扫描信号，第二触控电极（02）或第一触控电极（01）耦合触控扫描信号并输出，通过分时驱动实现触控功能和显示功能。由于通过对现有公共电极层结构进行变更来制作第二触控电极（02），不需要增加额外工艺单独制备第二触控电极（02），节省了生产成本。

Description

内嵌式触摸屏及其驱动方法以及显示装置 技术领域
本发明涉及触控技术领域，尤其涉及一种内嵌式触摸屏及其驱动方法以及一种显示装置。
背景技术
随着显示技术的飞速发展，触摸屏(Touch Screen Panel)已经逐渐遍及人们的生活中。目前，触摸屏按照组成结构可以分为：外挂式触摸屏(Add on Mode Touch Panel)、覆盖表面式触摸屏(On Cell Touch Panel)、以及内嵌式触摸屏(In Cell Touch Panel)。其中，外挂式触摸屏是将触摸屏与液晶显示屏(Liquid Crystal Display，LCD)分开生产，然后贴合到一起成为具有触摸功能的液晶显示屏，外挂式触摸屏存在制作成本较高、光透过率较低、模组较厚等缺点。而内嵌式触摸屏将触摸屏的触控电极内嵌在液晶显示屏内部，可以减薄模组整体的厚度，又可以大大降低触摸屏的制作成本，受到各大面板厂家青睐。
目前，现有的内嵌式触摸屏主要是利用互电容的原理实现对手指触摸位置的检测。具体实施时，是在现有的TFT(Thin Film Transistor，薄膜场效应晶体管)阵列基板上直接另外增加触控扫描线和触控感应线实现的；即在TFT阵列基板的表面制作两层相互异面相交的透明导电电极(一般为条状ITO(Indium Tin Oxides，铟锡金属氧化物)电极)，这两层ITO电极分别作为触摸屏的触控驱动线和触控感应线，在两条ITO电极的异面相交处形成感应电容。其工作过程为：在对作为触控驱动线的ITO电极加载触控驱动信号时，检测触控感应线通过感应电容耦合出的电压信号，在此过程中，当有人体接触触摸屏时，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，进而改变触控感应线耦合出的电压信号，而根据电压信号的变化，就可以确定触点位置。
上述现有的内嵌式触摸屏的结构设计，需要在现有的TFT阵列基板上增加新的膜层，导致在制作TFT阵列基板时需要增加额外的工艺，使生产成本增加，不利于提高生产效率。
发明内容
有鉴于此，本发明实施例的一个目的提供了一种能够实现成本较低、生产效率较高的内嵌式触摸屏。
本发明实施例的另一个目的提供了一种能够实现成本较低、生产效率较高的内嵌式触摸屏的驱动方法。
本发明实施例的又一个目的提供了一种能够实现成本较低、生产效率较高的显示装置。
因此，根据一个方面，本发明实施例提供了一种内嵌式触摸屏，包括相对而置的第一基板和第二基板，设置于第一基板面向第二基板的一侧的透明导电层，与透明导电层绝缘且异层设置的多个第一触控电极；其中，
透明导电层被分割成呈矩阵排列的多个相互独立的子电极；位于奇数行的子电极为第二触控子电极，位于偶数行的子电极为公共电极，且位于同一列的第二触控子电极组成一第二触控电极；或，位于偶数行的子电极为第二触控子电极，位于奇数行的子电极为公共电极，且位于同一列的第二触控子电极组成一第二触控电极；或，位于奇数列的子电极为第二触控子电极，位于偶数列的子电极为公共电极，且位于同一行的第二触控子电极组成一第二触控电极；位于偶数列的子电极为第二触控子电极，位于奇数列的子电极为公共电极，且位于同一行的第二触控子电极组成一第二触控电极；
第一触控电极的延伸方向与第二触控电极的延伸方向垂直，且各第一 触控电极分别和与第二触控电极垂直的一行或一列公共电极相对设置；以及
第一触控电极为触控驱动电极，第二触控电极为触控感应电极；或第一触控电极为触控感应电极，第二触控电极为触控驱动电极。
较佳地，在本发明实施例提供的上述内嵌式触摸屏中，各第一触控电极设置于第二基板面向第一基板的一侧。
较佳地，在本发明实施例提供的上述内嵌式触摸屏中，各第一触控电极由多条条状第一触控子电极组成。
较佳地，在本发明实施例提供的上述内嵌式触摸屏中，各第一触控电极为网格状结构。
较佳地，为了避免第一触控电极对显示面板的影响，在本发明实施例提供的上述内嵌式触摸屏中，第一触控电极的材料为金属或者透明导电材料。嵌式触摸屏还包括：位于第一基板面向第二基板一侧，或第二基板面向第一基板一侧的黑矩阵层；
各第一触控电极的图形在第一基板的正投影位于黑矩阵层的图形所在的区域内。
在具体实施时，在本发明实施例提供的上述内嵌式触摸屏中，第一基板为阵列基板，第二基板为对向基板；或
第一基板为对向基板，第二基板为阵列基板。
较佳地，在具体实施时，在本发明实施例提供的上述内嵌式触摸屏中，在第一基板为阵列基板而第二基板为对向基板的情况下，内嵌式触控屏还包括：
位于第一基板面向第二基板一侧、且与透明导电层异层设置的公共电极线和导线；其中，公共电极通过过孔与对应的公共电极线电连接，第二触控电极通过过孔与对应的导线电连接。
较佳地，为了简化制作工艺，进一步降低生产成本，在本发明实施例 提供的上述内嵌式触摸屏中，导线与公共电极线同层设置，且导线和公共电极线的延伸方向均与第二触控电极的延伸方向相同。
较佳地，为了简化制作工艺，进一步降低生产成本，在本发明实施例提供的上述内嵌式触摸屏中，还包括：设置于第一基板面向第二基板的一侧呈矩阵排列的多个亚像素、以及相互交叉而置的栅极信号线和数据信号线；
导线的延伸方向与栅极信号线相同，或与数据信号线相同。
较佳地，在具体实施时，在本发明实施例提供的上述内嵌式触摸屏中，相邻行的亚像素之间设置有两条栅极信号线；且以每相邻的两列亚像素为一个像素组，共用一条位于该两列亚像素之间的数据信号线；
导线和公共电极线交替设置在相邻的像素组之间的间隙处，且与数据信号线同层设置。
较佳地，在具体实施时，在本发明实施例提供的上述内嵌式触摸屏中，相邻列的亚像素之间设置有两条数据信号线；且以每相邻的两行亚像素为一个像素组，共用一条位于该两行亚像素之间的栅极信号线；
导线和公共电极线交替设置在相邻的像素组之间的间隙处，且与栅极信号线同层设置。
较佳地，在本发明实施例提供的上述内嵌式触摸屏中，第一触控电极与相邻的第二子触控电极之间的间隙宽度对应三个亚像素的宽度。
相应地，根据另一个方面，本发明实施例还提供了一种上述内嵌式触摸屏的驱动方法，该驱动方法包括：在一帧时间内，分时进行显示扫描和触控扫描；其中：
在显示扫描时间段，对透明导电层中的所有子电极施加公共电极信号；
在触控扫描时间段，对触控驱动电极加载触控扫描信号，触控感应电极耦合触控扫描信号并输出。
相应地，根据又一个方面，本发明实施例还提供了一种显示装置，包 括本发明实施例提供的上述任一种内嵌式触摸屏。
本发明实施例提供的上述内嵌式触摸屏及其驱动方法以及一种显示装置。根据本发明实施例，由于将透明导电层分割成第二触控电极和公共电极，相当于将现有的整面连接的公共电极层进行分割，形成相互绝缘的第二触控电极和公共电极，在显示时，对第二触控电极和公共电极均加载公共电极信号，在触控时，对第一触控电极或第二触控电极加载触控扫描信号，而第二触控电极或第一触控电极耦合触控扫描信号并输出，通过分时驱动实现触控功能和显示功能。由于本发明实施例提供的内嵌式触摸屏，通过对现有公共电极层结构进行变更来制作第二触控电极，因此，在现有制备工艺的基础上，不需要增加额外的工艺单独制备第二触控电极，从而节省了生产成本，提高了生产效率。并且，上述内嵌式触摸屏，将透明导电层分割成呈矩阵排列的多个相互独立的子电极，不仅可以保证整个触摸屏的子电极分布均匀，并且由于组成公共电极的子电极与组成第二触控电极的子电极结构相同，因此还可以保证公共电极与第二触控子电极的负载相匹配。另外，将第一触控电极设置与与公共电极相对的位置，避免第一触控电极与第二触控电极有交叠区域，从而可以最大限度的降低第一触控电极与第二触控电极之间的耦合电容。
附图说明
图1为本发明实施例提供的内嵌式触摸屏的剖面结构示意图；
图2a为本发明实施例提供的内嵌式触摸屏的俯视结构示意图之一；
图2b为本发明实施例提供的内嵌式触摸屏的俯视结构示意图之二；
图3a为本发明实施例提供的内嵌式触摸屏的俯视结构示意图之三；
图3b为本发明实施例提供的内嵌式触摸屏的俯视结构示意图之四；
图4a为本发明实施例提供的内嵌式触摸屏的俯视结构示意图之五；
图4b为本发明实施例提供的内嵌式触摸屏的俯视结构示意图之六；
图5为本发明实施例提供的内嵌式触摸屏的驱动方法的流程示意图。
具体实施方式
下面详细描述本发明的具体实施例，所述具体实施例的示例在附图中示出，其中自始至终相同的标号表示相同或相似的元件。下面参考附图描述的具体实施例是示例性的，旨在解释本发明，而不能解释为对本发明的一种限制。
下面结合附图，对本发明实施例提供的内嵌式触摸屏及其驱动方法以及显示装置的具体实施方式进行详细地说明。
附图中各膜层的厚度和形状不反映真实比例，目的只是示意说明本发明内容。
本发明实施例提供了一种内嵌式触摸屏，如图1所示，包括相对而置的第一基板1和第二基板2；设置于第一基板1面向第二基板2的一侧的透明导电层3，与透明导电层3绝缘且异层设置的多个第一触控电极01。
如图2a和图2b所示，透明导电层3被分割成呈矩阵排列的多个相互独立的子电极；其中，
如图2a所示，位于奇数行的子电极为第二触控子电极021，位于偶数行的子电极为公共电极03，且位于同一列的第二触控子电极021组成一第二触控电极02。或者，如图2b所示，位于奇数列的子电极为第二触控子电极021，位于偶数列的子电极为公共电极03，且位于同一行的第二触控子电极021组成一第二触控电极02。或者，在一个未图示的实施例中，位于偶数行的子电极为第二触控子电极021，位于奇数行的子电极为公共电极03，且位于同一列的第二触控子电极021组成一第二触控电极02。又或者，在另一个未图示的实施例中，位于偶数列的子电极为第二触控子电极021，位于奇数列的子电极为公共电极03，且位于同一行的第二触控子电极021组成一第二触控电极02。也就是说，根据本发明实施例，在透明 导电层3中，第二触控子电极021和公共电极03在行上交错排列，且位于同一列的第二触控子电极021组成一第二触控电极02；或者，第二触控子电极021和公共电极03在列上交错排列，且位于同一行的第二触控子电极021组成一第二触控电极02。
第一触控电极01的延伸方向与第二触控电极02的延伸方向垂直，且各第一触控电极01分别和与第二触控电极02垂直的一行或一列公共电极03相对设置。
第一触控电极01为触控驱动电极，第二触控电极02为触控感应电极；或，第一触控电极01为触控感应电极，第二触控电极02为触控驱动电极。
本发明实施例提供的上述内嵌式触摸屏，由于将透明导电层分割成第二触控电极和公共电极，相当于将现有的整面连接的公共电极层进行分割，形成相互绝缘的第二触控电极和公共电极，在显示时，对第二触控电极和公共电极均加载公共电极信号，在触控时，对第一触控电极(或第二触控电极)加载触控扫描信号，而第二触控电极(或第一触控电极)耦合触控扫描信号并输出，通过分时驱动实现触控功能和显示功能。由于本发明实施例提供的内嵌式触摸屏中，通过对现有公共电极层结构进行变更来制作第二触控电极，因此，在现有制备工艺的基础上，不需要增加额外的工艺单独制备第二触控电极，从而节省了生产成本，提高了生产效率。
并且，上述内嵌式触摸屏，将透明导电层分割成呈矩阵排列的多个相互独立的子电极，不仅可以保证整个触摸屏的子电极分布均匀，并且由于组成公共电极的子电极与组成第二触控电极的子电极结构相同，因此还可以保证公共电极与第二触控子电极的负载相匹配。另外，将第一触控电极设置在与公共电极相对的位置，避免第一触控电极与第二触控电极有交叠区域，从而可以最大限度的降低第一触控电极与第二触控电极之间的耦合电容。
在具体实施时，在本发明实施例提供的上述内嵌式触摸屏中，为了不 影响正常的显示功能，在对透明导电层进行分割时，分割线一般都会避开显示的开口区域，设置在黑矩阵层的图形区域，即各子电极之间的间隙在第一基板或第二基板上的正投影一般会位于亚像素之间的间隙处。
具体地，在具体实施时，本发明实施例提供的上述内嵌式触摸屏，第一基板可以为阵列基板，第二基板为对向基板；当然第一基板也可以为对向基板，第二基板为阵列基板，在此不作限定。
进一步地，在具体实施时，本发明实施例提供的上述内嵌式触摸屏，第一触控电极和第二触控电极可以均设置与同一基板上，也可以分别设置于不同基板上，在此不作限定。较佳地，在本发明实施例提供的上述内嵌式触摸屏中，如图1所示，各第一触控电极01设置于第二基板2面向第一基板1的一侧。
本发明实施例提供的上述内嵌式触摸屏，既适用于扭转向列(Twisted Nematic，TN)型液晶显示屏，也适用于高级超维场开关(Adwanced Dimension Switch，ADS)型液晶显示屏、高开口率高级超维场开关(High-Adwanced Dimension Switch，HADS)型液晶显示屏和平面内开关(In-Plane Switch，IPS)型液晶显示屏。
进一步地，在本发明实施例提供的上述内嵌式触摸屏应用于ADS型液晶显示屏时，板状结构的公共电极层位于狭缝状像素电极的下方，即公共电极位于下基板与像素电极之间，并且在公共电极与像素电极之间还设置有绝缘层。而应用于HADS型液晶显示屏时，狭缝状的公共电极位于板状结构的像素电极的上方，即像素电极位于下基板与公共电极之间，并且在像素电极与公共电极之间还设置有绝缘层。
在具体实施时，本发明实施例提供的上述内嵌式触摸屏，更适用于ADS型或HADS型液晶显示屏，这样将现有技术中位于阵列基板上的公共电极层进行分隔形成上述公共电极与第二触控电极。
进一步地，在本发明实施例提供的上述内嵌式触摸屏中，第一触控电 极的材料可以金属材料，也可以为透明导电材料，在此不作限定。
进一步地，在具体实施时，在本发明实施例提供的上述内嵌式触摸屏中，当第一触控电极的材料为透明导电材料时，由于不需要考虑开口率的问题，因此，如图2a和图2b所示，可以将第一触控电极01设置成覆盖一行或一列公共电极03的面电极结构，当然也可以设置成如图3a所示的多条条状结构，或者如图3b所示的网格状结构，在此不作限定。
在具体实施时，在本发明实施例提供的上述内嵌式触摸屏中，当第一触控电极的材料为金属材料时，由于金属材料大多不透光，会影响开口率，需要尽量减小第一触控电极的投影面积，因此如图3a所示，各第一触控电极01可以由多条条状第一触控子电极011组成；或者如图3b所示，各第一触控电极01为网格状结构。较佳地，各第一触控由多条条状第一触控子电极组成的触控效果较佳。
进一步地，当第一触控电极的材料为金属材料时，为了避免第一触控电极影响开口率，在本发明实施例提供的上述内嵌式触摸屏中，嵌式触摸屏还可以包括：位于第一基板面向第二基板一侧，或第二基板面向第一基板一侧的黑矩阵层；
各第一触控电极的图形在第一基板的正投影位于黑矩阵层的图形所在的区域内。
进一步地，在具体实施时，当本发明实施例提供的上述内嵌式触摸屏应用于ADS型或HADS型液晶显示屏时，即在第一基板为阵列基板而第二基板为对向基板的情况下；如图2a和图2b所示，内嵌式触控屏还可以包括：
位于第一基板1面向第二基板2一侧、且与透明导电层3异层设置的公共电极线04和导线05；其中，公共电极03通过过孔(例如参见图4a和4b)与对应的公共电极线04电连接，第二触控电极02通过过孔与对应的导线05电连接。
较佳地，为了降低公共电极与公共电极线之间的接触电阻，公共电极可以通过多个过孔与公共电极线电连接，同理，第二触控电极也可以通过多个过孔与导线电连接，在此不作限定。
较佳地，为了简化制作工艺，进一步降低生产成本，在本发明实施例提供的上述内嵌式触摸屏中，导线与公共电极线同层设置，且导线和公共电极线的延伸方向均与第二触控电极的延伸方向相同。这样在制备时，将导线与公共电极线同层设置，可以不用增加新的制备工艺，仅需变更对应的膜层的构图即可制得导线与公共电极线，简化了工艺步骤，节省了生产成本，提高了生产效率。并且，导线和公共电极线的延伸方向均设置为与第二触控电极的延伸方向相同，不仅可以便于导线与第二触控电极的连接，并且可以保证导线与公共电极线不会交叉，避免电极间发生串扰。
较佳地，为了简化制作工艺，进一步降低生产成本，在本发明实施例提供的上述内嵌式触摸屏中，还包括：如图4a和图4b所示，设置于第一基板1面向第二基板2的一侧呈矩阵排列的多个亚像素4、以及相互交叉而置的栅极信号线G和数据信号线D；
导线05的延伸方向与栅极信号线G相同，或与数据信号线D相同。这样将导线和公共电极线的延伸方向设置为与栅极信号线相同，或与数据信号线相同，使导线和公共电极线位于显示屏的显示区域，不用占用边框区域，从而可以最大程度的降低显示屏的边框宽度，有利于实现窄边框设计。较佳地，在具体实施时，在本发明实施例提供的上述内嵌式触摸屏中，如图4a所示，相邻行的亚像素4之间设置有两条栅极信号线G；且以每相邻的两列亚像素4为一个像素组，共用一条位于该两列亚像素4之间的数据信号线D；
导线05和公共电极线04交替设置在相邻的像素组之间的间隙处，且与数据信号线D同层设置。这样，通过双栅设计，可以节省出相邻像素组之间数据信号线的位置。从而将导线05与公共电极线04交替设置在相邻 的像素组之间的间隙处，并且导线05和公共电极线04分别通过对应的过孔V与对应的第二触控电极02和公共电极03电连接。
或者，在具体实施时，在本发明实施例提供的上述内嵌式触摸屏中，如图4b所示，相邻列的亚像素4之间设置有两条数据信号线D；且以每相邻的两行亚像素4为一个像素组，共用一条位于该两行亚像素之间的栅极信号线G；
导线05和公共电极线04交替设置在相邻的像素组之间的间隙处，且与栅极信号线G同层设置。这样，通过双源设计，可以节省出相邻像素组之间栅极信号线的位置。从而将导线05与公共电极线04交替设置在相邻的像素组之间的间隙处，并且导线05和公共电极线04分别通过对应的过孔V与对应的第二触控电极02和公共电极03电连接。
具体地，在具体实施时，第一触控电极与相邻的第二子触控电极之间的间隙宽度会直接影响触控变化率，因此，第一触控电极与相邻的第二子触控电极之间的间隙宽度要保证触控电容变化量的同时，满足变化率的要求。较佳地，在本发明实施例提供的上述内嵌式触摸屏中，第一触控电极与相邻的第二子触控电极之间的间隙宽度对应三个亚像素的宽度。
基于同一发明构思，本发明实施例还提供了一种上述内嵌式触摸屏的驱动方法，如图5所示，该驱动方法可以包括：在一帧时间内，分时进行显示扫描和触控扫描；其中：
S501、在显示扫描时间段，对透明导电层中的所有子电极施加公共电极信号；
S502、在触控扫描时间段，对触控驱动电极加载触控扫描信号，触控感应电极耦合触控扫描信号并输出。
具体地，在具体实施时，针对一帧时间段，步骤S501和步骤S502的执行顺序不进行限制，可以是先显示扫描时间段，后触控扫描时间段，也可以先触控扫描时间段后显示扫描时间段，在此不作限制，只要保证每一 帧时间内，S501和S502的执行顺序相同就可以。
基于同一发明构思，本发明实施例还提供了一种显示装置，包括本发明实施例提供的上述内嵌式触摸屏。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。该显示装置的实施可以参见上述内嵌式触摸屏的实施例，重复之处不再赘述。
本发明实施例提供的一种内嵌式触摸屏及其驱动方法以及显示装置，由于将透明导电层分割成第二触控电极和公共电极，相当于将现有的整面连接的公共电极层进行分割，形成相互绝缘的第二触控电极和公共电极，在显示时，对第二触控电极和公共电极均加载公共电极信号，在触控时，对第一触控电极或第二触控电极加载触控扫描信号，而第二触控电极或第一触控电极耦合触控扫描信号并输出，通过分时驱动实现触控功能和显示功能。由于本发明实施例提供的内嵌式触摸屏，通过对现有公共电极层结构进行变更来制作第二触控电极，因此，在现有制备工艺的基础上，不需要增加额外的工艺单独制备第二触控电极，节省了生产成本，提高了生产效率。并且，上述内嵌式触摸屏，将透明导电层分割成呈矩阵排列的多个相互独立的子电极，不仅可以保证整个触摸屏的子电极分布均匀，并且由于组成公共电极的子电极与组成第二触控电极的子电极结构相同，因此还可以保证公共电极与第二触控子电极的负载相匹配。另外，将第一触控电极设置在与公共电极相对的位置，避免第一触控电极与第二触控电极有交叠区域，从而可以最大限度的降低第一触控电极与第二触控电极之间的耦合电容。
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (15)

  1. 一种内嵌式触摸屏，包括相对而置的第一基板和第二基板，其特征在于，所述内嵌式触摸屏还包括：设置于所述第一基板面向所述第二基板的一侧的透明导电层，与所述透明导电层绝缘且异层设置的多个第一触控电极；其中，
    所述透明导电层被分割成呈矩阵排列的多个相互独立的子电极；其中，位于奇数行的所述子电极为第二触控子电极，位于偶数行的所述子电极为公共电极，且位于同一列的所述第二触控子电极组成一第二触控电极；或，
    位于偶数行的所述子电极为第二触控子电极，位于奇数行的所述子电极为公共电极，且位于同一列的所述第二触控子电极组成一第二触控电极；或，
    位于奇数列的所述子电极为第二触控子电极，位于偶数列的所述子电极为公共电极，且位于同一行的所述第二触控子电极组成一第二触控电极；或
    位于偶数列的所述子电极为第二触控子电极，位于奇数列的所述子电极为公共电极，且位于同一行的所述第二触控子电极组成一第二触控电极；
    所述第一触控电极的延伸方向与所述第二触控电极的延伸方向垂直，且各所述第一触控电极分别和与所述第二触控电极垂直的一行或一列公共电极相对设置；以及
    所述第一触控电极为触控驱动电极，所述第二触控电极为触控感应电极；或所述第一触控电极为触控感应电极，所述第二触控电极为触控驱动电极。
  2. 如权利要求1所述的内嵌式触摸屏，其特征在于，各所述第一触 控电极设置于所述第二基板面向所述第一基板的一侧。
  3. 如权利要求2所述的内嵌式触摸屏，其特征在于，各所述第一触控电极由多条条状第一触控子电极组成。
  4. 如权利要求2所述的内嵌式触摸屏，其特征在于，各所述第一触控电极为网格状结构。
  5. 如权利要求3或4所述的内嵌式触摸屏，其特征在于，所述第一触控电极的材料为金属或者透明导电材料。
  6. 如权利要求3或4所述的内嵌式触摸屏，其特征在于，所述嵌式触摸屏还包括：位于所述第一基板面向所述第二基板一侧，或所述第二基板面向所述第一基板一侧的黑矩阵层；
    各所述第一触控电极的图形在所述第一基板的正投影位于所述黑矩阵层的图形所在的区域内。
  7. 如权利要求1所述的内嵌式触摸屏，其特征在于，所述第一基板为阵列基板，所述第二基板为对向基板；或
    所述第一基板为对向基板，所述第二基板为阵列基板。
  8. 如权利要求7所述的内嵌式触摸屏，其特征在于，在所述第一基板为阵列基板而所述第二基板为对向基板的情况下，所述内嵌式触控屏还包括：
    位于所述第一基板面向所述第二基板一侧、且与所述透明导电层异层设置的公共电极线和导线；其中，所述公共电极通过过孔与对应的公共电极线电连接，所述第二触控电极通过过孔与对应的导线电连接。
  9. 如权利要求8所述的内嵌式触摸屏，其特征在于，所述导线与所述公共电极线同层设置，且所述导线和所述公共电极线的延伸方向均与所述第二触控电极的延伸方向相同。
  10. 如权利要求9所述的内嵌式触摸屏，其特征在于，还包括：设置于所述第一基板面向所述第二基板的一侧呈矩阵排列的多个亚像素、以及 相互交叉而置的栅极信号线和数据信号线；
    所述导线的延伸方向与所述栅极信号线相同，或与所述数据信号线相同。
  11. 如权利要求10所述的内嵌式触摸屏，其特征在于，相邻行的亚像素之间设置有两条栅极信号线；且以每相邻的两列亚像素为一个像素组，共用一条位于该两列亚像素之间的数据信号线；
    所述导线和所述公共电极线交替设置在相邻的像素组之间的间隙处，且与所述数据信号线同层设置。
  12. 如权利要求10所述的内嵌式触摸屏，其特征在于，相邻列的亚像素之间设置有两条数据信号线；且以每相邻的两行亚像素为一个像素组，共用一条位于该两行亚像素之间的栅极信号线；
    所述导线和所述公共电极线交替设置在相邻的像素组之间的间隙处，且与所述栅极信号线同层设置。
  13. 如权利要求10-12任一项所述内嵌式触摸屏，其特征在于，所述第一触控电极与相邻的所述第二子触控电极之间的间隙宽度对应三个亚像素的宽度。
  14. 一种如权利要求1-13中任一项所述的内嵌式触摸屏的驱动方法，其特征在于，所述驱动方法包括：在一帧时间内，分时进行显示扫描和触控扫描；其中：
    在显示扫描时间段，对透明导电层中的所有所述子电极施加公共电极信号；
    在触控扫描时间段，对所述触控驱动电极加载触控扫描信号，所述触控感应电极耦合所述触控扫描信号并输出。
  15. 一种显示装置，其特征在于，包括如权利要求1-13中任一项所述的内嵌式触摸屏。
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