WO2018161547A1 - 触控基板及其驱动方法、显示面板及显示装置 - Google Patents
触控基板及其驱动方法、显示面板及显示装置 Download PDFInfo
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- WO2018161547A1 WO2018161547A1 PCT/CN2017/103913 CN2017103913W WO2018161547A1 WO 2018161547 A1 WO2018161547 A1 WO 2018161547A1 CN 2017103913 W CN2017103913 W CN 2017103913W WO 2018161547 A1 WO2018161547 A1 WO 2018161547A1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR 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; CALCULATING OR 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; CALCULATING OR 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; CALCULATING OR 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR 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
- G06F3/0448—Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR 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
- G06F3/045—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04106—Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection
Definitions
- the present disclosure relates to the field of display technologies, and in particular, to a touch substrate, a method for preparing the touch substrate, a display panel, and a display device.
- Touch screens have become the main human-computer interaction means for personal mobile communication devices and integrated information terminals (such as tablet PCs, smart phones, and super laptops) because of their ease of operation, intuitiveness and flexibility.
- the touch screen can be divided into four main types: resistive touch screen, capacitive touch screen, infrared touch screen and surface wave (SAW) touch screen.
- resistive touch screen capacitive touch screen
- capacitive touch screen has multi-touch function, the reaction time is fast, the service life is long and the transmittance is high, the user experience is superior, and as the process is gradually matured, the yield rate is significantly improved, so that the capacitive screen is The price is decreasing day by day, and it has become the main application of touch interaction of small and medium size information terminals.
- the touch screen in the prior art mainly has two types of mutual capacitance type and self-capacitance type.
- the mutual capacitance type touch screen forms a capacitance at a position where the lateral electrode and the vertical electrode intersect, and when the finger touches, the capacitance value of the capacitance is detected, thereby achieving the touch.
- Checkpoint detection The self-capacitive touch screen realizes the detection of the touch point by detecting the change in the capacitance of the electrode to the ground.
- the mutual-capacitive touch structure requires horizontal and vertical electrodes, and requires three MASK (patterning) processes, which are complicated in process and high in production cost.
- the self-capacitive touch structure requires only one MASK process, but The number of electrode leads is increased, the difficulty of wiring is increased, and the number of corresponding Pin pins is also increased, which leads to a large size of the FPC (Flexible Printed Circuit Board), which increases the material cost and the production difficulty.
- FPC Flexible Printed Circuit Board
- the present disclosure aims to at least solve one of the technical problems existing in the prior art, and provides a touch substrate and a driving method thereof, a display panel, and a display device.
- a first aspect of the present disclosure provides a touch substrate including:
- each of the plurality of touch electrode blocks including two sub-electrodes, each row of touch electrode blocks including two sub-row electrodes, and The sub-electrodes located in the same sub-row are connected together;
- a resistance detecting module configured to input driving signals one by one to the touch electrode blocks in each row;
- the first control module is configured to determine, according to the time when the touch electrode block outputs a driving signal in each row, the touch electrode block that generates the touch;
- a capacitance detecting module configured to input a capacitance detecting signal one by one to the sub-electrodes in each sub-row of the row of the touch electrode blocks in which the touch occurs;
- the second control module is configured to determine the position of the touch point according to the capacitive feedback signal output by the two sub-electrodes corresponding to the touch-control electrode block.
- each sub-electrode is triangular in shape.
- each of the plurality of touch electrode blocks is multiplexed into a common electrode in a display phase.
- the touch substrate includes a plurality of pixel units arranged in an array, and the pixel unit is disposed corresponding to the touch electrode block.
- one touch electrode block corresponds to one pixel unit.
- one touch electrode block corresponds to a plurality of pixel units arranged in an array.
- the material of each sub-electrode is ITO.
- the first control module and the second control module are integrated.
- a second aspect of the present disclosure provides a driving method of the above touch substrate, where the driving method includes:
- the feedback signal determines the position of the touch point.
- the driving signal is an excitation signal.
- a third aspect of the present disclosure provides a display panel including the above touch substrate.
- a display device including the above display panel is provided.
- FIG. 1 is a schematic structural diagram of a touch substrate provided by an embodiment of the present disclosure
- FIG. 2 is a schematic diagram of inputting a driving signal to each row of touch electrode blocks according to an embodiment of the present disclosure
- FIG. 3 is an equivalent circuit diagram of a sub-electrode of a touch substrate in the absence of a finger touch according to an embodiment of the present disclosure
- FIG. 4 is an equivalent circuit diagram of a sub-electrode of a touch substrate according to an embodiment of the present disclosure when a finger touch has occurred;
- FIG. 5 is a schematic diagram of inputting a capacitance detection signal to each sub-row sub-electrode according to an embodiment of the present disclosure.
- an embodiment of the present disclosure provides a touch substrate including a substrate, and a plurality of touch electrode blocks 10 disposed on the substrate in an array, and each of the touch electrode blocks 10 includes two Each of the sub-electrodes 11 includes a plurality of sub-electrodes, and the sub-electrodes 11 are located in the same sub-row; the resistance detecting module is configured to input driving signals to the touch-electrode blocks 10 of each row one by one; The first control module is configured to determine, according to the time when the touch electrode block 10 of each row outputs the driving signal, the touch electrode block 10 that generates the touch; and the capacitance detecting module, which is used for the touch control that generates the touch The sub-electrodes 11 of each sub-row in the row of the pole block 10 input the capacitance detection signals one by one; and the second control module is configured to output the capacitances of the two sub-electrodes 11 corresponding to the touch-sensitive electrode block 10 in which
- the touch layer in the touch substrate is formed by an array of single-layer touch electrode blocks 10, wherein each touch electrode block 10 is composed of two sub-electrodes 11 and each row of touch electrode blocks 10 is composed of two sub-row sub-electrodes 11 (i.e., row 1 shown in Fig. 1 includes sub-row 1 and sub-row 2), and sub-electrodes 11 located in the same sub-row are connected together.
- a driving signal is input to the input end of each row of the touch electrode block 10 through a resistance detecting module, and the driving signal may be an excitation signal u, that is, a row touch
- the two sub-row electrodes 11 included in the control electrode block 10 simultaneously input drive signals.
- the sub-electrode 11 can be equivalent to a resistor R and a capacitance C to the ground. Because of the RC delay, for each row of the touch electrode block 10, after t 0 is passed, The output of the row of touch electrode blocks 10 receives the drive signal input from its input. If there is a finger touch, as shown in FIG. 4, at the position touched by the finger, the sub-electrode 11 is divided into two resistors R 1 and R 2 , and a finger-to-ground capacitance C 1 and a ground capacitance C, at this time, the output when the drive signal is delayed with respect to the finger is not touched, will produce a change, i.e.
- the output of the row only touch electrode block 10 receives the drive signal from the input terminal passes. Therefore, the y coordinate of the finger touch can be determined according to which row of the RC delay time changes. Further, when the finger moves on the same sub-row electrode 11, a different RC delay is generated according to the two divided resistance values R 1 and R 2 . Based on the different RC delays, the x-coordinate of the finger touch can be determined. Thereby, the position of the touch-sensitive electrode block 10 in which the touch occurs (ie, a large area touched by the finger, such as the area defined by the dotted circle in FIG. 2) can be obtained. Then, as shown in FIG.
- the capacitance detecting module inputs the capacitance detecting signal (self-capacitance detecting signal) one by one to the sub-electrodes 11 in the two sub-rows corresponding to the touch-sensitive electrode block 10 that is touch-sensitive, and the touch occurs.
- the capacitive feedback signals output by the two sub-electrodes 11 corresponding to the touch electrode block 10 determine the precise position of the touch point (ie, which of A, B, and C in FIG. 5 is touched).
- the touch substrate provided in this embodiment can detect a more accurate position of the touch point.
- each of the sub-electrodes 11 has a triangular shape.
- each sub-electrode 11 is also Other shapes may be used as long as the two sub-electrodes 11 in each of the touch electrode blocks 10 can be assembled into electrode blocks.
- the material of the sub-electrode 11 is indium tin oxide (ITO), and may be other transparent conductive materials.
- the touch substrate in this embodiment further includes a plurality of pixel units arranged in an array, and the pixel unit is disposed corresponding to the touch electrode block 10.
- the touch electrode block 10 corresponds to one pixel unit
- the touch electrode block 10 corresponds to a plurality of pixel units arranged in an array.
- one touch electrode block 10 corresponds to 2 ⁇ 2 pixel units. .
- each touch electrode block 10 in the touch substrate is multiplexed into a common electrode in the display phase. That is, the touch electrode block 10 can be time-multiplexed, used as a touch electrode in the touch phase, and used as a common electrode in the display phase.
- the first control module and the second control module in the touch substrate are integrated, that is, the two are integrated in the same control chip.
- the approximate touch position is first determined by the resistance detection, and then the accurate touch point is determined by the capacitance detection.
- the touch substrate in this embodiment has a simpler wiring than the self-capacitive touch substrate, and has a smaller structure than the mutual-capacitive touch substrate, and is lighter and thinner.
- FIG. 2-5 another embodiment of the present disclosure provides a method for driving a touch substrate, which is the touch substrate in the above embodiment.
- the driving method includes:
- the touch electrode block 10 of each row is input with a driving signal one by one, and the touch electrode block 10 that generates the touch is determined according to the time when the driving electrode block 10 outputs the driving signal for each row.
- the driving detection signal is input to the input end of each row of the touch electrode block 10 through the resistance detecting module, and the driving signal may be the excitation signal u, that is, the two sub-subelectrodes included in the row of the touch electrode block 10 are included.
- 11 Input the drive signal at the same time. If there is no finger touch, the sub-electrode 11 can be equivalent to a resistor R and a capacitance C to the ground. Because of the RC delay, for each row of the touch electrode block 10, after passing t 0 , the row of the touch electrode block The output of 10 is only connected to the drive signal input from its input.
- the sub-electrode 11 is divided into two resistors R 1 and R 2 , and a finger-to-ground capacitance C 1 and a ground capacitance C.
- the delay of the output driving signal is relatively
- a change will occur, that is, after the time t 1 , the output end of the row of the touch electrode block 10 receives the drive signal input from its input terminal.
- the y-coordinate of the finger touch can be determined based on which row of RC delay time changes.
- a different RC delay is generated according to the two divided resistance values R 1 and R 2 . Based on the different RC delays, the x-coordinate of the finger touch can be determined. Thereby, the position of the touch electrode block 10 in which the touch occurs (ie, a large area touched by the finger) can be obtained.
- the sub-electrode 11 in each sub-row of the touch-sensitive electrode block 10 is input with a capacitance detection signal one by one, and is output according to the two sub-electrodes 11 corresponding to the touch-sensitive touch electrode block 10
- the capacitance feedback signal determines the position of the touch point.
- the capacitance detecting module inputs the capacitance detecting signal (self-capacitance detecting signal) one by one to the sub-electrodes 11 in each sub-row of the touch-sensitive electrode block 10 in which the touch is generated, and the second control module generates the touch.
- the capacitive feedback signal outputted by the two sub-electrodes 11 corresponding to the touch electrode block 10 can determine the precise position of the touch point (that is, which of A, B, and C in the figure is touched).
- the approximate touch position is first determined by the resistance detection, and then the accurate touch point is determined by the capacitance detection, so that the position of the determined touch point is more accurate.
- Yet another embodiment of the present disclosure provides a display panel and a display device, wherein the display panel includes the touch substrate of the above embodiment, and the display device includes the display panel.
- the display device may be a liquid crystal display device such as a liquid crystal panel, an electronic paper, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, or the like, and any product or component having a display function.
- a liquid crystal display device such as a liquid crystal panel, an electronic paper, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, or the like, and any product or component having a display function.
- the display device in this embodiment has higher sensitivity.
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Abstract
Description
Claims (12)
- 一种触控基板,包括:基底;多个触控电极块,设置在所述基底上并且呈阵列排布,所述多个触控电极块中的每个包括两个子电极,每行触控电极块包括两子行子电极,且位于同一子行的子电极连接在一起;电阻检测模块,被配置为给每一行中的触控电极块逐一输入驱动信号;第一控制模块,被配置为根据每一行中的所述触控电极块输出驱动信号的时间,判断发生触控的触控电极块;电容检测模块,被配置为给发生触控的所述触控电极块所在行中的每一子行中的子电极逐一输入电容检测信号;以及第二控制模块,被配置为根据发生触控的所述触控电极块所对应的两子电极输出的电容反馈信号,判断触控点的位置。
- 根据权利要求1所述的触控基板,其中,每个子电极的形状为三角形。
- 根据权利要求1所述的触控基板,其中,所述多个触控电极块中的每个在显示阶段复用为公共电极。
- 根据权利要求1所述的触控基板,其中,所述触控基板包括呈阵列排布的多个像素单元,且像素单元与触控电极块对应设置。
- 根据权利要求4所述的触控基板,其中,一个触控电极块对应一个像素单元。
- 根据权利要求4所述的触控基板,其中,一个触控电极块 对应呈阵列排布的多个像素单元。
- 根据权利要求1所述的触控基板,其中,每个子电极的材料为ITO。
- 根据权利要求1所述的触控基板,其中,所述第一控制模块和所述第二控制模块集成在一起。
- 一种如权利要求1-8中任一项所述的触控基板的驱动方法,所述驱动方法包括:给每一行中的触控电极块逐一输入驱动信号,根据每一行中的所述触控电极块输出驱动信号的时间,判断发生触控的触控电极块;以及给发生触控的所述触控电极块所在行中的每一子行中的子电极逐一输入电容检测信号,根据发生触控的所述触控电极块所对应的两子电极所输出的电容反馈信号,判断触控点的位置。
- 根据权利要求9所述的驱动方法,其中,所述驱动信号为激励信号。
- 一种显示面板,包括权利要求1-8中任一项所述的触控基板。
- 一种显示装置,包括权利要求11所述的显示面板。
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US15/758,121 US10558298B2 (en) | 2017-03-07 | 2017-09-28 | Touch control substrate, driving method thereof, display panel and display device |
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CN201710132391.6A CN106909259B (zh) | 2017-03-07 | 2017-03-07 | 触控基板及其驱动方法、显示面板及显示装置 |
CN201710132391.6 | 2017-03-07 |
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CN106909259B (zh) | 2017-03-07 | 2022-07-15 | 京东方科技集团股份有限公司 | 触控基板及其驱动方法、显示面板及显示装置 |
WO2020215191A1 (zh) * | 2019-04-22 | 2020-10-29 | 深圳盈天下视觉科技有限公司 | 一种被动非接触式的互容式电容屏交互方法及其交互工具 |
CN112214121A (zh) * | 2019-07-09 | 2021-01-12 | 陕西坤同半导体科技有限公司 | 触摸显示基板及其驱动方法、显示装置、电子设备 |
CN112631458A (zh) * | 2020-12-24 | 2021-04-09 | 苏州椒图电子有限公司 | 一种led触摸显示装置及其触控方法 |
CN113342216B (zh) * | 2021-06-29 | 2024-03-12 | 昆山龙腾光电股份有限公司 | 一种触摸屏及触摸屏触控方法 |
CN114299889A (zh) * | 2022-01-05 | 2022-04-08 | 苏州清越光电科技股份有限公司 | 一种电子纸显示装置触控显示方法 |
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- 2017-03-07 CN CN201710132391.6A patent/CN106909259B/zh active Active
- 2017-09-28 US US15/758,121 patent/US10558298B2/en not_active Expired - Fee Related
- 2017-09-28 WO PCT/CN2017/103913 patent/WO2018161547A1/zh active Application Filing
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CN104503643A (zh) * | 2014-12-25 | 2015-04-08 | 上海天马微电子有限公司 | 一种触控结构、触控检测方法及触摸显示装置 |
CN106339129A (zh) * | 2016-09-13 | 2017-01-18 | 厦门天马微电子有限公司 | 触控显示面板及其驱动方法、内嵌式触控显示器 |
CN106909259A (zh) * | 2017-03-07 | 2017-06-30 | 京东方科技集团股份有限公司 | 触控基板及其驱动方法、显示面板及显示装置 |
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US10558298B2 (en) | 2020-02-11 |
CN106909259B (zh) | 2022-07-15 |
US20190361587A1 (en) | 2019-11-28 |
CN106909259A (zh) | 2017-06-30 |
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