WO2018209946A1 - 触控显示面板、显示装置及触控显示面板的驱动方法 - Google Patents

触控显示面板、显示装置及触控显示面板的驱动方法 Download PDF

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WO2018209946A1
WO2018209946A1 PCT/CN2017/116517 CN2017116517W WO2018209946A1 WO 2018209946 A1 WO2018209946 A1 WO 2018209946A1 CN 2017116517 W CN2017116517 W CN 2017116517W WO 2018209946 A1 WO2018209946 A1 WO 2018209946A1
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self
display panel
touch display
capacitance
pixels
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English (en)
French (fr)
Inventor
张洁
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BOE Technology Group Co Ltd
Ordos Yuansheng Optoelectronics Co Ltd
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BOE Technology Group Co Ltd
Ordos Yuansheng Optoelectronics Co Ltd
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Priority to US16/068,927 priority Critical patent/US10949007B2/en
Publication of WO2018209946A1 publication Critical patent/WO2018209946A1/zh
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving

Definitions

  • the present disclosure relates to the field of display technologies, and in particular, to a touch display panel, a display device, and a driving method of the touch display panel.
  • 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.
  • Some embodiments of the present disclosure provide a touch display panel, a display device, and a driving method of the touch display panel.
  • a touch display panel includes: an upper substrate, a lower substrate disposed opposite the upper substrate; and a matrix arranged between the upper substrate and the lower substrate a driving chip configured to perform progressive scanning on the plurality of pixels; a common electrode layer between the upper substrate and the lower substrate, which is divided into a plurality of independent self-capacitance electrodes, The self-capacitance electrode is connected to the driving chip through a corresponding wire,
  • the driving chip is further configured to apply a common electrode signal to the corresponding row self-capacitance electrodes only when the pixels corresponding to the respective rows of self-capacitance electrodes are in a scanning state.
  • each row of self-capacitance electrodes corresponds to a plurality of rows of pixels.
  • the number of rows of pixels corresponding to each row of self-capacitance electrodes is the same.
  • the method further includes: a plurality of compensation resistors electrically connected to the plurality of wires, and a resistance value of each compensation resistor and a corresponding wire The length is negatively correlated.
  • the touch display panel provided by some embodiments of the present disclosure further includes: a plurality of compensation capacitors respectively coupled to the plurality of wires, and a capacitance value of each compensation capacitor and a corresponding wire The length is negatively correlated.
  • the first electrode of the compensation capacitor is disposed in the same layer as the wire.
  • a part of the wire is multiplexed as a first electrode of the compensation capacitor.
  • the wire and the self-capacitance electrode are disposed in different layers, and the second electrode and the self-capacitance of the compensation capacitor The electrodes are set in the same layer.
  • the wire is disposed in the same layer as the self-capacitance electrode, and the second electrode of the compensation capacitor is different from the self-capacitance electrode. Layer settings.
  • the touch display panel provided by some embodiments of the present disclosure further includes a data line extending in the same direction as the wire extending direction.
  • the wires are disposed in the same layer and insulated from the data lines.
  • the driving chip is further configured to detect a change in a capacitance value of each of the self-capacitance electrodes during touch control. Determine the touch position.
  • a display device provided by some embodiments of the present disclosure includes the above touch control display panel provided by an embodiment of the present disclosure.
  • the pixels in the touch display panel are progressively scanned, and only when the pixels corresponding to the respective rows of self-capacitance electrodes are scanned, a common electrode signal is applied to the corresponding row of self-capacitance electrodes.
  • the driving method provided by some embodiments of the present disclosure determines the touch position by detecting a change in the capacitance value of each of the self-capacitance electrodes during touch.
  • each row of self-capacitance electrodes corresponds to n rows of pixels, where n is an integer greater than or equal to 1, and the driving method is specifically:
  • the pixels in the touch display panel are progressively scanned, and the common electrode signals are applied to the respective rows of self-capacitance electrodes only when the pixels of the n rows corresponding to the self-capacitance electrodes of the respective rows are scanned.
  • FIG. 1 is a schematic structural diagram of an example of a touch display panel according to an embodiment of the present disclosure
  • FIG. 2 is a schematic top plan view of a touch display panel according to an embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of driving sequence of a touch display panel in a display stage according to an embodiment of the present disclosure
  • FIG. 4 is another schematic structural diagram of a touch display panel according to an embodiment of the present disclosure.
  • FIG. 5 is another schematic structural diagram of a touch display panel according to an embodiment of the present disclosure.
  • FIG. 6 is another schematic structural diagram of a touch display panel according to an embodiment of the present disclosure.
  • FIG. 7 is another schematic structural diagram of a touch display panel according to an embodiment of the present disclosure.
  • FIG. 7b is another schematic structural diagram of a touch display panel according to an embodiment of the present disclosure.
  • a touch display panel comprising: an upper substrate 01, a lower substrate 02 and a driving chip 03 disposed opposite to the upper substrate 01, and a plurality of pixels and a common electrode layer 04 arranged in a matrix between the substrate 01 and the lower substrate 02, wherein the common electrode layer 04 is divided into a plurality of independent self-capacitance electrodes 05, and the self-capacitance electrodes 05 are connected to the corresponding wires 06 through
  • the driving chip 03 has a row of self-capacitance electrodes 05 corresponding to a plurality of rows of pixels; the driving chip 03 is configured to perform progressive scanning on the pixels, and only when the pixels corresponding to the respective rows of self-capacitance electrodes 05 are in a scanning state, the corresponding row self-capacitance Electrode 05 applies a common electrode signal.
  • the position of the driving chip 03 may also be disposed at other positions than the lower substrate 02. In other words, the position of the driving chip 03 is not limited to being disposed opposite to the upper substrate 01. Moreover, in other embodiments, each row of self-capacitance electrodes 05 may also correspond to a single row of pixels.
  • the driving timing of the touch display panel can be as shown in FIG. 3, when scanning the pixels of the first to n rows, the driving chip 3 is A row of self-capacitance electrodes applies a common voltage signal Vcom1. Similarly, when scanning the n+1th to 2nth rows of pixels, the driver chip 3 can apply a common voltage signal Vcom2 to the row of self-capacitance electrodes corresponding thereto.
  • the driving chip 3 can apply a common voltage signal Vcomx to the row of self-capacitance electrodes corresponding thereto, that is, only when the pixels corresponding to the respective rows of self-capacitance electrodes are in a scanning state, correspondingly A common electrode signal is applied from the capacitor electrode.
  • the scanning of the n-th row of pixels refers to applying a scan signal to the gate line gate corresponding to the row of pixels, and applying a data signal to the data line Data corresponding to the row of pixels.
  • the touch display panel may include an upper substrate, a lower substrate disposed opposite the upper substrate, a driving chip, a plurality of pixels arranged in a matrix between the upper substrate and the lower substrate, and a common electrode layer.
  • the common electrode layer is divided into a plurality of independent self-capacitance electrodes, and the self-capacitance electrodes are connected to the driving chip through corresponding wires, and each row of self-capacitance electrodes can correspond to a plurality of rows of pixels; the driving chip is configured to perform progressive scanning on the pixels And applying a common electrode signal to the corresponding row of self-capacitance electrodes only when the pixels corresponding to the respective rows of self-capacitance electrodes are in a scanning state.
  • the common electrode signals are applied to the corresponding row self-capacitance electrodes, thereby reducing the amount of data required to be processed by the driving circuit, thereby The design of the drive circuit is simplified, and the production cost is saved.
  • the touch display panel provided by some embodiments of the present disclosure does not need to add an additional film layer, and only needs to pattern the common electrode layer disposed in the original layer to form a corresponding self-capacitance electrode pattern, thereby saving Production costs increase production efficiency.
  • the touch electrode density of the touch screen is usually on the order of millimeters. Therefore, in a specific implementation, the density and the occupied area of each "self-capacitance electrode" can be selected according to the required touch density to ensure the required touch density.
  • each "self-capacitance electrode” is designed as a square electrode of about 5 mm * 5 mm.
  • the pixel density of the display screen is usually on the order of micrometers. Therefore, generally one self-capacitance electrode corresponds to a plurality of pixel units in the display screen.
  • the touch display panel provided by some embodiments of the present disclosure divides the common electrode layer disposed on the upper substrate into a plurality of self-capacitance electrodes and corresponding wires.
  • a self-capacitance electrode of a regular arrangement is obtained.
  • the number of rows of pixels corresponding to each row of self-capacitance electrodes is the same.
  • the method further includes: a plurality of compensation resistors Rn electrically connected to the plurality of wires 06, and each of the compensation resistors Rn
  • the resistance value is inversely related to the length of the corresponding wire 06. That is, the longer the wire, the smaller the resistance value of the compensation resistor Rn to which the wire is connected.
  • the difference in the load of the output due to the difference in the length of the wires connected between the driving chip and the self-capacitance electrode is improved by connecting a compensation resistor to the wire, so that the uniformity of display is improved.
  • the setting of the resistance value of the compensation resistor is to detect the output difference of each wire load by applying a common electrode signal to each wire in advance, determine the resistance value of the resistance according to the difference, and then set the compensation of the corresponding resistance value.
  • the resistance is such that the resistance of each wire is equal to the sum of the resistances connected to the wires, thereby improving the uniformity of display.
  • the touch display panel provided by the other embodiments of the present disclosure, as shown in FIG. 5, further includes: a plurality of compensation capacitors Cn coupled to the plurality of wires 06, and a capacitance value of each compensation capacitor Cn. It is inversely related to the length of the corresponding wire 06, wherein the compensation capacitor Cn comprises a first electrode and a second electrode. The difference in the load of the output due to the difference in the length of the wires connected between the driving chip and the self-capacitance electrode is improved by connecting the compensation capacitor to the wire, so that the uniformity of display is improved.
  • the setting of the capacitance value of the compensation capacitor is obtained by testing in advance, and then the compensation capacitor of the corresponding capacitance value is set according to the obtained value, so that the wires have the same load, thereby improving display uniformity.
  • the first electrode 07 of the compensation capacitor is disposed in the same layer as the wire 06, and the first electrode 07 and the wire 06 are disposed above
  • the insulating layer 09, the self-capacitance electrode 05 and the second electrode 08 are disposed in the same layer, and the self-capacitance electrode 05 is connected to the wire 06 through the via hole, so that in the preparation, the preparation process of the first electrode is not separately added, and only the original wire is required to be changed.
  • the patterning of the film layer can be realized, which simplifies the process steps, saves production costs and improves production efficiency.
  • the touch display panel provided by some embodiments of the present disclosure, a part of the wire 06 is multiplexed into the first electrode, that is, utilized.
  • the wire and the second electrode 08 constitute a compensation capacitor.
  • the second electrode 08 disposed above it has a smaller area, and for a shorter length of wire 062, a portion disposed above it
  • the two electrodes 08 have a large area, thereby forming compensation capacitors of different sizes.
  • the second electrodes 08 above the wires 06 having different lengths are different in area, thereby forming compensation capacitors of different sizes. .
  • the second electrode 08 and the self-capacitance electrode 05 are further simplified in order to further simplify the process steps. Same layer setting. Therefore, in the preparation, the preparation process of the second electrode is not separately added, and only the composition of the film layer corresponding to the original self-capacitance electrode can be changed, the process step is simplified, the production cost is saved, and the production efficiency is improved.
  • the touch display panel provided by some embodiments of the present disclosure, when the wires are disposed in the same layer as the self-capacitance electrodes, since the first electrodes are disposed in the same layer as the wires or are multiplexed by the wires, in order to ensure that the first electrodes are
  • the second electrode has a large facing area, and the second electrode is disposed in a different layer from the self-capacitance electrode.
  • a data line is further included, and the wire extending direction is the same as the data line extending direction.
  • the wires are disposed in the same layer and insulated from the data lines. Therefore, in the preparation, it is not necessary to separately increase the preparation process of the wire, and only the composition of the film layer corresponding to the original data line needs to be changed, the process step is simplified, the production cost is saved, and the production efficiency is improved.
  • the driving chip is further configured to apply a touch scan signal to each “self-capacitance electrode” during touch control, by detecting each “self-capacitance electrode”.
  • the capacitance value changes to determine the touch position.
  • the specific principle is: when the human body does not touch the screen, the capacitance of each "self-capacitance electrode” is a fixed value. When the human body touches the screen, the capacitance of the corresponding self-capacitance electrode is a fixed value superimposed on the human body capacitance.
  • the driving chip can determine the touch position by detecting the change of the capacitance value of each "self-capacitance electrode” in the touch timing section.
  • the driving chip can simultaneously apply a touch scan signal to the self-capacitance electrode, or apply a touch scan signal to the self-capacitance electrode line by line, which is not limited herein.
  • the touch scan signal can be a square wave signal.
  • the touch display panel provided by some embodiments of the present disclosure divides the common electrode layer disposed in the entire entire layer into a plurality of self-capacitance electrodes, in order not to affect the normal display function, in the common electrode layer.
  • the dividing line generally avoids the open area of the display and is placed in the graphic area of the black matrix layer.
  • the above-mentioned touch screen may further include: a black matrix layer disposed on a side of the upper substrate facing the lower substrate or a side of the lower substrate facing the upper substrate;
  • the orthogonal projection between the adjacent two self-capacitance electrodes is located in the area where the pattern of the black matrix layer is located in the area where the pattern of the black matrix layer is located;
  • the pattern of each of the wires is located in the area where the pattern of the black matrix layer is located in the orthographic projection of the lower substrate.
  • some embodiments of the present disclosure further provide a display device, including a touch display panel provided by some embodiments of the present disclosure, which may be: a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital device. Any product or component that has a display function, such as a photo frame or a navigator.
  • a display device including a touch display panel provided by some embodiments of the present disclosure, which may be: a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital device. Any product or component that has a display function, such as a photo frame or a navigator.
  • the display device reference may be made to the above embodiment of the in-cell touch panel, and the repeated description is omitted.
  • some embodiments of the present disclosure further provide a driving method of a touch display panel, where the driving method includes:
  • the pixels in the touch display panel are progressively scanned, and the common electrode signal is applied to the self-capacitance electrodes of the row only when the pixels corresponding to the respective rows of self-capacitance electrodes are scanned.
  • the driving method of the touch display panel controls the timing of applying the common electrode signals to the self-capacitance electrodes of each row, that is, only when scanning the pixels corresponding to the “self-capacitance electrodes”
  • the capacitor electrode applies a common electrode signal to reduce the amount of data required to be processed by the driving circuit, thereby simplifying the design of the driving circuit and saving production costs.
  • the driving method provided by some embodiments of the present disclosure may further include:
  • the touch position is determined by detecting a change in the capacitance value of each "self-capacitance electrode”.
  • each "self-capacitance electrode” When the human body does not touch the screen, the capacitance of each "self-capacitance electrode" is a fixed value. When the human body touches the screen, the capacitance of the corresponding self-capacitance electrode is a fixed value superimposed on the human body capacitance, and the driving chip is in contact.
  • the control timing segment can determine the touch position by detecting the change in the capacitance value of each "self-capacitance electrode".
  • each row of self-capacitance electrodes corresponds to n rows of pixels, where n is an integer greater than or equal to 1, and the driving method is specifically:
  • the pixels in the touch display panel are progressively scanned, and only when n rows of pixels corresponding to the respective rows of self-capacitance electrodes are scanned, a common electrode signal is applied to the corresponding row of self-capacitance electrodes.

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  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Position Input By Displaying (AREA)
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Abstract

本公开公开了一种触控显示面板、显示装置及触控显示面板的驱动方法。该触控显示面板包括：上基板；与上基板相对设置的下基板；位于上基板与下基板之间呈矩阵排列的多个像素；驱动芯片，被配置为对多个像素进行逐行扫描；以及位于上基板与下基板之间的公共电极层，其被分割成多个相互独立的自电容电极，自电容电极通过对应导线连接至驱动芯片，其中，驱动芯片还被配置为仅在与各行自电容电极对应的像素处于扫描状态时，对相应行自电容电极施加公共电极信号。

Description

触控显示面板、显示装置及触控显示面板的驱动方法
相关申请的交叉引用
本申请要求于2017年5月18日递交的题为“一种触控显示面板、显示装置及触控显示面板的驱动方法”的中国专利申请(申请号201710353151.9)的优先权，在此以全文引用的方式将该中国专利申请并入本文中。
技术领域
本公开涉及显示技术领域，尤其涉及触控显示面板、显示装置及触控显示面板的驱动方法。
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。
发明内容
本公开一些实施例提供了触控显示面板、显示装置及触控显示面板的驱动方法。
根据本公开的一些实施例，提供了一种触控显示面板，包括：上基板、与所述上基板相对设置的下基板；位于所述上基板与所述下基板之间呈矩阵排列的多个像素；驱动芯片，被配置为对所述多个像素进行逐行扫描；位于所述上基板与所述下基板之间的公共电极层，其被分割成多个相互独立的自电容电极，所述自电容电极通过对应导线连接至所述驱动芯片，
其中，所述驱动芯片还被配置为仅在与各行自电容电极对应的像素处于扫描状态，对相应行自电容电极施加公共电极信号。
在一种可能的实现方式中，每一行自电容电极对应多行像素。
在一种可能的实现方式中，在本公开一些实施例提供的上述触控显示面板中，每行自电容电极对应的像素行数相同。
在一种可能的实现方式中，在本公开一些实施例提供的上述触控显示面板中，还包括：与多根导线分别电连接的多个补偿电阻，每个补偿电阻的电阻值与相应导线的长度负相关。
在一种可能的实现方式中，在本公开一些实施例提供的上述触控显示面板中，还包括：与多根导线分别耦接的多个补偿电容，每个补偿电容的电容值与相应导线的长度负相关。
在一种可能的实现方式中，在本公开一些实施例提供的上述触控显示面板中，补偿电容的第一电极与所述导线同层设置。
在一种可能的实现方式中，在本公开一些实施例提供的上述触控显示面板中，所述导线的一部分复用为所述补偿电容的第一电极。
在一种可能的实现方式中，在本公开一些实施例提供的上述触控显示面板中，所述导线与所述自电容电极异层设置，所述补偿电容的第二电极与所述自电容电极同层设置。
在一种可能的实现方式中，在本公开一些实施例提供的上述触控显示面板中，所述导线与自电容电极同层设置，所述补偿电容的第二电极与所述自电容电极异层设置。
在一种可能的实现方式中，在本公开一些实施例提供的上述触控显示面板中，还包括数据线，其延伸方向与所述导线延伸方向相同。
在一种可能的实现方式中，在本公开一些实施例提供的上述触控显示面板中，所述导线与所述数据线同层且绝缘设置。
在一种可能的实现方式中，在本公开一些实施例提供的上述触控显示面板中，所述驱动芯片还被配置为在触控时，通过检测各所述自电容电极的电容值变化以判断触控位置。
本公开一些实施例提供的一种显示装置，包括本公开实施例提供的上述触 控显示面板。
本公开一些实施例提供的一种触控显示面板的驱动方法，包括：
在显示时，对触控显示面板中像素进行逐行扫描，且仅当扫描与各行自电容电极对应的像素时，对相应行自电容电极施加公共电极信号。
在一种可能的实现方式中，本公开一些实施例提供的上述驱动方法，在触控时，通过检测各所述自电容电极的电容值变化以判断触控位置。
在一种可能的实现方式中，在本公开一些实施例提供的上述驱动方法中，每行自电容电极对应n行像素，其中n为大于等于1的整数，所述驱动方法具体为：
在显示时，对触控显示面板中像素进行逐行扫描，且仅当对各行所述自电容电极对应的n行所述像素进行扫描时，对相应行自电容电极施加公共电极信号。
附图说明
图1为本公开实施例提供的触控显示面板的示例结构示意图；
图2为本公开实施例提供的触控显示面板的示例俯视示意图；
图3为本公开实施例提供的触控显示面板在显示阶段的驱动时序示意图；
图4为本公开实施例提供的触控显示面板的另一结构示意图；
图5为本公开实施例提供的触控显示面板的另一结构示意图；
图6为本公开实施例提供的触控显示面板的另一结构示意图；
图7a为本公开实施例提供的触控显示面板的另一结构示意图；
图7b为本公开实施例提供的触控显示面板的另一结构示意图。
具体实施方式
为了使本公开的目的、技术方案和优点更加清楚，下面将结合附图对本公开作进一步地详细描述，显然，所描述的实施例仅是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本公开保护的范围。
附图中各部件的形状和大小不反映真实比例，目的只是示意说明本公开内 容。
下面结合附图，对本公开实施例提供的触控显示面板、显示装置及触控显示面板的驱动方法的具体实施方式进行详细地说明。
在本公开的一些实施例中，提供了一种触控显示面板，如图1和图2所示，包括：上基板01、与上基板01相对设置的下基板02和驱动芯片03、位于上基板01与下基板02之间呈矩阵排列的多个像素和公共电极层04，其中，公共电极层04被分割成多个相互独立的自电容电极05，自电容电极05通过对应导线06连接至驱动芯片03，每一行自电容电极05对应多行像素；驱动芯片03被配置为对像素进行逐行扫描，且仅在与各行自电容电极05对应的像素处于扫描状态时，对相应行自电容电极05施加公共电极信号。此外，在其他实施例中，驱动芯片03的位置也可设置在除了下基板02之外的其他位置处。换言之，驱动芯片03的位置不限于与上基板01相对设置。此外，在另一些实施例中，每一行自电容电极05也可对应于单行像素。
例如，以一行自电容电极对应n行像素为例，在显示过程中，触控显示面板的驱动时序可如图3所示，当对第1至n行像素进行扫描时，驱动芯片3对第1行自电容电极施加公共电压信号Vcom1，同理，当对第n+1至2n行像素进行扫描时，驱动芯片3可对与其对应的该行自电容电极施加公共电压信号Vcom2，当对第xn-n+1至xn行像素进行扫描时，驱动芯片3可对与其对应的该行自电容电极施加公共电压信号Vcomx，即仅在与各行自电容电极对应的像素处于扫描状态时，对相应行自电容电极施加公共电极信号。其中，对第n行像素进行扫描是指对该行像素对应的栅线gate施加扫描信号，同时对该行像素对应的数据线Data施加数据信号。
本公开一些实施例提供的触控显示面板，可包括上基板、与上基板相对设置的下基板、驱动芯片、位于上基板与下基板之间呈矩阵排列的多个像素、和公共电极层，其中，公共电极层被分割成多个相互独立的自电容电极，自电容电极通过对应导线连接至驱动芯片，每一行自电容电极可对应多行像素；驱动芯片被配置为对像素进行逐行扫描，且仅在与各行自电容电极对应的像素处于扫描状态时，对相应行自电容电极施加公共电极信号。通过对各行自电容电极施加公共电极信号的时序进行控制，即只有在扫描各自电容电极对应的像素时， 才对相应行自电容电极施加公共电极信号，减少驱动电路所需处理的数据量，从而简化了驱动电路的设计，节约了生产成本。
除此之外，本公开一些实施例提供的触控显示面板不需要增加额外的膜层，仅需要对原有的整层设置的公共电极层进行构图工艺形成对应的自电容电极的图形，节省了生产成本，提高了生产效率。
一般地，触摸屏的触控电极密度通常在毫米级，因此，在具体实施时，可以根据所需的触控密度选择各“自电容电极”的密度和所占面积以保证所需的触控密度，例如，各“自电容电极”设计为5mm*5mm左右的方形电极。而显示屏的像素密度通常在微米级，因此，一般一个自电容电极会对应显示屏中的多个像素单元。并且，本公开一些实施例提供的触控显示面板是将现有的整层设置在上基板上的公共电极层分割成多个自电容电极和对应的导线。
在具体实施时，为了方便对公共电极层进行切割，得到规整排列的自电容电极，在本公开一些实施例中提供的触控显示面板中，每行自电容电极对应的像素行数相同。
进一步地，在本公开另一些实施例提供的触控显示面板中，如图4所示，还可包括：与多根导线06分别电连接的多个补偿电阻Rn，且每个补偿电阻Rn的电阻值与相应导线06的长度负相关。即导线越长，该导线连接的补偿电阻Rn的电阻值越小。通过在导线上连接补偿电阻来改善由于驱动芯片与自电容电极之间连接的导线的长度不同导致的输出的负载的差异，从而使显示的均一性得到了提高。
在一些实施例中，对补偿电阻的电阻值大小的设置是预先通过对各导线施加公共电极信号，检测各导线负载的输出差异，根据该差异确定电阻的电阻值，然后设置相应电阻值的补偿电阻，以使每条导线的电阻与该导线连接的电阻之和一致，从而提高显示的均一性。
进一步地，在本公开另一些实施例提供的触控显示面板，如图5所示，还包括：与多根导线06分别耦接的多个补偿电容Cn，且每个补偿电容Cn的电容值与相应导线06的长度负相关，其中，补偿电容Cn包括第一电极和第二电极。通过在导线上连接补偿电容来改善由于驱动芯片与自电容电极之间连接的导线的长度不同导致的输出的负载的差异，从而使显示的均一性得到了提高。
在一些实施例中，对补偿电容的电容值的设置，是预先通过测试获取的，然后根据获取的值设置相应电容值的补偿电容，以使各导线具有相同的负载，从而提高显示的均一性。
为了简化工艺步骤，如图6所示，在本公开的一些实施例提供的触控显示面板中，补偿电容的第一电极07与导线06同层设置，第一电极07和导线06上方设置有绝缘层09，自电容电极05与第二电极08同层设置，自电容电极05通过过孔与导线06连接，这样在制备时，不用单独增加第一电极的制备工艺，仅需变更原导线对应的膜层的构图即可实现，简化了工艺步骤，节省了生产成本，提高了生产效率。
此外，为了省去制作第一电极的工艺步骤，如图7a和图7b所示，在本公开的一些实施例提供的触控显示面板中，导线06的一部分复用为第一电极，即利用导线与第二电极08构成补偿电容。在本公开的一些实施例中，如图7a所示，对于长度较长的导线061，在其上方设置的第二电极08面积较小，对于长度较短的导线062，在其上方设置的第二电极08面积较大，从而形成大小不同的补偿电容。在本公开的另一些实施例中，如图7b所示，通过设置将第二电极08设置成阶梯形状，使长度不同的导线06上方的第二电极08面积不同，从而形成大小不同的补偿电容。
如图6所示，在本公开的一些实施例提供的触控显示面板中，当导线06与自电容电极05为异层设置时，为了进一步简化工艺步骤，第二电极08与自电容电极05同层设置。这样在制备时，不用单独增加第二电极的制备工艺，仅需变更原自电容电极对应的膜层的构图即可实现，简化了工艺步骤，节省了生产成本，提高了生产效率。
在本公开的一些实施例提供的触控显示面板中，当导线与自电容电极同层设置时，由于第一电极与导线同层设置或由导线复用，因此，为了保证使第一电极与第二电极具有较大的正对面积，第二电极与自电容电极异层设置。
此外，在本公开的一些实施例提供的触控显示面板中，还包括数据线，导线延伸方向与数据线延伸方向相同。
在本公开的一些实施例提供的触控显示面板中，导线与数据线同层且绝缘设置。这样在制备时，不用单独增加导线的制备工艺，仅需变更原数据线对应 的膜层的构图即可实现，简化了工艺步骤，节省了生产成本，提高了生产效率。
进一步地，在本公开的一些实施例提供的触控显示面板中，驱动芯片还用于在触控时，向各“自电容电极”上施加触控扫描信号，通过检测各“自电容电极”的电容值变化以判断触控位置。具体原理为：当人体未触碰屏幕时，各“自电容电极”所承受的电容为一固定值，当人体触碰屏幕时，对应的自电容电极所承受的电容为固定值叠加人体电容，驱动芯片在触控时序段通过检测各“自电容电极”的电容值变化可以判断出触控位置。
在一些实施例中，驱动芯片可以同时向自电容电极施加触控扫描信号，也可以逐行向自电容电极施加触控扫描信号，在此不作限定。在一些实施例中，触控扫描信号可以为方波信号。
在具体实施时，本公开的一些实施例提供的触控显示面板是将现有的整层设置的公共电极层分割成多个自电容电极，为了不影响正常的显示功能，在对公共电极层进行分割时，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。
具体地，本公开的一些实施例提供的上述触摸屏中，还可以包括：设置于上基板面向下基板的一侧，或设置于下基板面向上基板的一侧的黑矩阵层；
相邻的两个自电容电极之间的分割间隙在下基板的正投影均位于黑矩阵层的图形所在区域内；
各导线的图形在下基板的正投影均位于黑矩阵层的图形所在区域内。
此外，本公开的一些实施例还提供了一种显示装置，包括本公开的一些实施例提供的触控显示面板，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。
此外，本公开的一些实施例还提供了一种触控显示面板的驱动方法，该驱动方法包括：
在显示时，对触控显示面板中像素进行逐行扫描，且仅当扫描与各行自电容电极对应的像素时，对该行自电容电极施加公共电极信号。
本公开的一些实施例提供的触控显示面板的驱动方法，通过对各行自电容电极施加公共电极信号的时序进行控制，即只有在扫描各“自电容电极”对应 的像素时，才对各行自电容电极施加公共电极信号，减少驱动电路所需处理的数据量，从而简化了驱动电路的设计，节约了生产成本。
此外，本公开的一些实施例提供的驱动方法还可包括：
在触控时，通过检测各“自电容电极”的电容值变化以判断触控位置。
当人体未触碰屏幕时，各“自电容电极”所承受的电容为一固定值，当人体触碰屏幕时，对应的自电容电极所承受的电容为固定值叠加人体电容，驱动芯片在触控时序段通过检测各“自电容电极”的电容值变化可以判断出触控位置。
在具体实施时，在本公开的一些实施例提供的驱动方法中，每行自电容电极对应n行像素，其中n为大于等于1的整数，驱动方法具体为：
在显示时，对触控显示面板中像素进行逐行扫描，且仅当对各行自电容电极对应的n行像素进行扫描时，对相应行自电容电极施加公共电极信号。
显然，本领域的技术人员可以对本公开进行各种改动和变型而不脱离本公开的精神和范围。这样，倘若本公开的这些修改和变型属于本公开权利要求及其等同技术的范围之内，则本公开也意图包含这些改动和变型在内。

Claims (18)

  1. 一种触控显示面板的驱动方法，其中，所述触控显示面板包括：
    上基板；
    与所述上基板相对设置的下基板；
    位于所述上基板与所述下基板之间呈矩阵排列的多个像素；
    位于所述上基板与所述下基板之间的公共电极层，其被分割成多个相互独立的自电容电极；以及
    驱动芯片，通过对应导线连接至所述自电容电极；
    所述驱动方法包括：
    在显示时，所述驱动芯片对所述触控显示面板中像素进行逐行扫描，且仅当扫描与各行自电容电极对应的像素时，对相应行自电容电极施加公共电极信号。
  2. 如权利要求1所述的驱动方法，还包括：
    在触控时，通过检测各所述自电容电极的电容值变化以判断触控位置。
  3. 如权利要求1所述的驱动方法，其中，所述触控显示面板还包括：
    与多根导线分别电连接的多个补偿电阻，每个补偿电阻的电阻值与相应导线的长度负相关。
  4. 如权利要求1所述的驱动方法，其中，所述触控显示面板还包括：
    与多根导线分别耦接的多个补偿电容，每个补偿电容的电容值与相应导线的长度负相关。
  5. 如权利要求1所述的驱动方法，其中，每行自电容电极对应n行像素，其中n为大于等于1的整数，所述驱动方法具体为：
    在显示时，对触控显示面板中像素进行逐行扫描，且仅当对各行自电容电极对应的n行像素进行扫描时，对相应行自电容电极施加公共电极信号。
  6. 一种触控显示面板，包括：
    上基板；
    与所述上基板相对设置的下基板；
    位于所述上基板与所述下基板之间呈矩阵排列的多个像素；
    驱动芯片，被配置为对所述多个像素进行逐行扫描；以及
    位于所述上基板与所述下基板之间的公共电极层，其被分割成多个相互独立的自电容电极，所述自电容电极通过对应导线连接至所述驱动芯片，
    其中，所述驱动芯片还被配置为仅在与各行自电容电极对应的像素处于扫描状态，对相应行自电容电极施加公共电极信号。
  7. 如权利要求6所述的触控显示面板，其中，每一行自电容电极对应多行像素。
  8. 如权利要求7所述的触控显示面板，其中，每行自电容电极对应的像素行数相同。
  9. 如权利要求6所述的触控显示面板，还包括：
    与多根导线分别电连接的多个补偿电阻，每个补偿电阻的电阻值与相应导线的长度负相关。
  10. 如权利要求6所述的触控显示面板，还包括：
    与多根导线分别耦接的多个补偿电容，每个补偿电容的电容值与相应导线的长度负相关。
  11. 如权利要求10所述的触控显示面板，其中，补偿电容的第一电极与所述导线同层设置。
  12. 如权利要求10所述的触控显示面板，其中，所述导线的一部分复用为所述补偿电容的第一电极。
  13. 如权利要求11或12所述的触控显示面板，其中，所述导线与所述自电容电极异层设置，所述补偿电容的第二电极与所述自电容电极同层设置。
  14. 如权利要求11或12所述的触控显示面板，其中，所述导线与所述自电容电极同层设置，所述补偿电容的第二电极与所述自电容电极异层设置。
  15. 如权利要求6-14任一项所述的触控显示面板，还包括：
    数据线，其延伸方向与所述导线延伸方向相同。
  16. 如权利要求15所述的触控显示面板，其中，所述导线与所述数据线同层且绝缘设置。
  17. 如权利要求6-16任一项所述的触控显示面板，其中，所述驱动芯片还被配置为：在触控时，通过检测各所述自电容电极的电容值变化以判断触控 位置。
  18. 一种显示装置，包括如权利要求6-17任一项所述的触控显示面板。
PCT/CN2017/116517 2017-05-18 2017-12-15 触控显示面板、显示装置及触控显示面板的驱动方法 Ceased WO2018209946A1 (zh)

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