WO2016090655A1 - 一种具有触摸功能的嵌入式显示屏、终端及触摸检测方法 - Google Patents

一种具有触摸功能的嵌入式显示屏、终端及触摸检测方法 Download PDF

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Publication number
WO2016090655A1
WO2016090655A1 PCT/CN2014/094060 CN2014094060W WO2016090655A1 WO 2016090655 A1 WO2016090655 A1 WO 2016090655A1 CN 2014094060 W CN2014094060 W CN 2014094060W WO 2016090655 A1 WO2016090655 A1 WO 2016090655A1
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WO
WIPO (PCT)
Prior art keywords
display screen
touch
selection signal
signal line
display
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2014/094060
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English (en)
French (fr)
Inventor
付如海
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US14/433,603 priority Critical patent/US9727169B2/en
Publication of WO2016090655A1 publication Critical patent/WO2016090655A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • 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
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
    • G06F3/04184—Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally
    • 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
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers

Definitions

  • the invention relates to an embedded display screen, in particular to an embedded display screen with a touch function, a terminal and an embedded display touch detection method with a touch function.
  • the embedded touch display screen embeds a touch sensor inside the liquid crystal panel, thereby achieving thin and light weight of the panel.
  • Electrodes are arranged between the upper and lower glass substrates of the display screen, and the electrode array is covered with the entire surface.
  • the electrode may be composed of any conductive layer or any conductive material.
  • the self-capacitive touch display screen only needs to set a single electrode, and the touch event is judged by detecting the capacitance formed between the electrode and the touch object, and the contact position is obtained by weight calculation by the capacitance measured by the adjacent electrode.
  • all the electrodes of the touch display screen are taken out one by one and a plurality of Bonding pins are formed by binding Bonded packaging, and each electrode corresponds to one pin to be connected to the external driving chip.
  • the driver chip scans all of the built-in electrodes separately to determine touch events.
  • each electrode corresponds to one pin, so that the bonding pin of the touch display has a considerable number of pins.
  • Such a structure requires high production precision and, to a certain extent, also affects production efficiency, and thus such a touch screen is not suitable for mass production.
  • the technical problem to be solved by the present invention is to provide an embedded display screen with a touch function, a terminal and an embedded display touch detection method with a touch function, and select an electrode connected to the touch controller one by one by driving the selector. For touch scanning, the number of leads that need to be routed to the touch controller is greatly reduced.
  • a technical solution adopted by the present invention is to provide an embedded display screen with a touch function, the display screen including an upper substrate, a lower substrate, and distribution on the upper substrate and the lower substrate a liquid crystal display layer and a common electrode distributed between the upper substrate and the liquid crystal display layer; wherein the common electrode is divided into a plurality of matrix arrays of sub-electrodes to form a touch electrode;
  • the method includes: a drive selector disposed between the upper substrate and the lower substrate, connected to the sub-electrodes in a one-to-one correspondence by a plurality of leads; and a touch controller disposed on the upper substrate and the lower Outside the space formed by the substrate, the selection signal line and the scan signal line are connected to the drive selector, the total number of the selection signal lines and the scan signal lines is less than the total number of the leads; the touch controller passes through The selection signal line transmits a selection signal to the drive selector, and the drive selector selects at least one of the plurality of leads in
  • the drive selector includes a plurality of switch modules, each switch module includes a first end, a second end, and a control end; the first ends of each of the switch modules are connected to each other and through the scan signal line
  • the touch controller is connected; the second end of each switch is connected to one of the sub-electrodes by a lead wire; and the control end of each switch is connected to the touch controller through the selection signal line.
  • the display screen includes a plurality of the signal selection lines, each of the signal selection lines is connected to a plurality of control terminals of the switch module, and the number of the switch modules connected to each of the selection signal lines is mutually Same or different.
  • the display screen includes a plurality of the scanning signal lines, each of the scanning signal lines is connected to a first end of a plurality of the switch modules, and the number of the switch modules connected to each of the scan signal lines is Same or different from each other.
  • the display screen further includes a display controller, and the touch controller transmits the selection signal during an interval period in which the display controller does not perform display driving on the liquid crystal display layer.
  • the display screen further includes at least two pins that are bonded to the bonding package, and the selection signal line and the scan signal line are correspondingly connected to the pins of the at least two bonding packages, and the touch controller is Connected to the drive selector.
  • the display screen is a self-capacitive touch display screen.
  • another technical solution adopted by the present invention is to provide a terminal, which includes the embedded display screen with touch function according to any of the above.
  • another technical solution adopted by the present invention is to provide a touch detection method, the method comprising: receiving a selection signal; and selecting, according to the selection signal, a plurality of touch electrodes in the display screen Selecting at least one connection with the touch controller outside the display screen to implement a touch function; wherein the plurality of touch electrodes are formed by dividing a common electrode of the display screen.
  • the step of receiving the selection signal is specifically: receiving the selection signal during an interval period in which the display screen is not driven by the display.
  • the invention provides an embedded display screen, a terminal and a touch detection method with a touch function, which divides a common electrode of the display screen into a plurality of matrix array sub-electrodes to form a touch electrode, and sets a drive selector in the screen to
  • the plurality of lead wires are connected in one-to-one correspondence with the plurality of sub-electrodes, and the touch controller outside the screen is connected to the drive selector through the selection signal line and the scan signal line, and the selection signal is transmitted through the selection signal line to control the drive selector number in multiple pieces.
  • At least one of the leads is selectively connected to the scan signal line, and the total number of select signal lines and scan signal lines is less than the total number of leads, thereby greatly reducing the number of leads that need to be routed to the touch controller.
  • FIG. 1 is a schematic structural diagram of an embedded display screen with a touch function according to a first embodiment of the present invention
  • FIG. 2 is a signal timing diagram of display driving and touch detection of an embedded display screen with a touch function in an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of an embedded display screen with a touch function according to a second embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of an embedded display screen with a touch function according to a third embodiment of the present invention.
  • FIG. 5 is a schematic flow chart of a touch detection method in an embodiment of the present invention.
  • FIG. 1 is a schematic structural diagram of an embedded display screen with a touch function according to a first embodiment of the present invention.
  • the display screen 10 shown in this embodiment includes an upper substrate 11, a lower substrate 12, and a liquid crystal display layer 13.
  • the liquid crystal display layer 13 is distributed between the upper substrate 11 and the lower substrate 12, and the common electrode 14 of the liquid crystal display layer 13 is distributed between the upper substrate 11 and the liquid crystal display layer 13.
  • the common electrode 14 is divided into a plurality of matrix-arranged sub-electrodes 140 to form a touch electrode.
  • the display screen 10 further includes a drive selector 15 and a touch controller 16.
  • the drive selector 15 is disposed between the upper substrate 11 and the lower substrate 12, and each of the sub-electrodes 140 is connected to the drive selector 15 by a lead 150.
  • the position of the drive selector 15 does not overlap with the position where the upper substrate 11, the lower substrate 12, the liquid crystal display layer 13, and the common electrode 14 are distributed.
  • the touch controller 16 is disposed outside the space A formed by the upper substrate 11 and the lower substrate 12, and is connected to the drive selector 15 through the selection signal line 160 and the scanning signal line 161.
  • the total number of the selection signal lines 160 and the scanning signal lines 161 is smaller than the total number of the leads 150.
  • the touch controller 16 transmits a selection signal to the drive selector 15 through the selection signal line 160.
  • the drive selector 15 selects at least one of the plurality of leads 150 to be electrically connected to the scan signal line 161 in response to the selection signal.
  • the display screen is an In-cell display screen, and other components not shown in FIG. 1 are the same as the prior art. I will not repeat them here.
  • the display screen 10 is a self-capacitive touch display screen.
  • the display screen 10 further includes a display controller 17, which is disposed outside the space A formed by the upper substrate 11 and the lower substrate 12 and passes through the wires and the common electrode in the embodiment. 14 connections.
  • the display controller 17 sends a driving scan signal to drive the liquid crystal display layer 13 to display an image.
  • the principle is the same as that in the prior art, and details are not described herein.
  • the touch controller 15 transmits the selection signal during an interval period in which the display controller 17 does not display drive the liquid crystal display layer 13.
  • the working principle of the display screen 10 of the present invention is specifically as follows.
  • the display controller 17 transmits a display of a frame image (e.g., Frame1 or Frame2) by driving a scan signal as shown in FIG. Moreover, the display controller 17 scans and drives the liquid crystal display layer 13 to display two consecutive frames of images (such as Frame1 and Frame2), and transmits a driving scan signal for displaying the image of the previous frame and a driving scan signal for transmitting the image for the next frame. Time interval between (V_Blanking Within the time), the touch controller 16 transmits the selection signal. In other words, the touch controller 16 performs touch detection during the interval period before the start of the display of the next frame after the display controller 17 drives the liquid crystal display layer 13 to display one frame of the screen. The display controller 17 does not transmit a drive scan signal to display drive the liquid crystal display layer 13.
  • a frame image e.g., Frame1 or Frame2
  • the display controller 17 scans and drives the liquid crystal display layer 13 to display two consecutive frames of images (such as Frame1 and Frame2), and transmits a driving scan signal for displaying the image
  • the touch controller 16 transmits a scan signal and a selection signal as shown in FIG. 2, the drive selector 15 receives the selection signal through the selection signal line, and connects the plurality of sub-electrodes 140 in response to the selection signal.
  • One of the leads 150 is electrically connected to the scan signal line 161, so that the scan signal sent by the touch controller 16 can be transmitted to the sub-electrode 140 connected to the selected lead through the scan signal line for electrode scanning.
  • the touch controller 16 also receives the electrode signal generated after the sub-electrode 140 is scanned by the electrode through the scan signal line to the selected lead.
  • the touch controller 16 sends a corresponding selection signal, so that the driving selector 15 selects the plurality of leads one by one, and the plurality of sub-electrodes 140 receive the scan signals sent by the touch controller 16 one by one to perform electrodes. Scanning and feeding back the corresponding electrode signal to the touch controller 16.
  • the touch controller 16 determines the sub-electrode 140 in the touch electrode that has a signal change according to the received plurality of electrode signals to determine coordinates of the touch position.
  • the manner in which the touch controller 16 sends the scan signal to the sub-electrode 140 for electrode scanning is self-capacitance scanning.
  • FIG. 3 is a schematic structural diagram of an embedded display screen with a touch function according to a second embodiment of the present invention.
  • the drive selector 25 includes a plurality of switch modules 251, each of which includes a first end 252, a second end 253, and a control end 254.
  • the first end 252 of each switch module 251 is connected to each other and connected to the touch controller 26 through the scan signal line 261.
  • the second end 253 of each switch module 251 is connected to a sub-electrode 240 through a lead 250.
  • the control terminal 254 of each switch module 251 is connected to the touch controller 26 through the selection signal line 260.
  • the display screen 10 includes a plurality of signal selection lines 260, each of which is connected to the control terminals 254 of the plurality of switch modules 251, and the number of switch modules 251 connected to each of the selection signal lines 260 is mutually Same or different.
  • the selection signal line 260 may be provided in plurality, and each selection signal line 260 is connected to the plurality of sub-electrodes 240 through the lead 250.
  • the number of the sub-electrodes 240 connected to each of the selection signal lines 260 may be the same or different, and may be divided and set according to actual conditions.
  • the display screen 10 includes a plurality of scanning signal lines 261, each scanning signal line 261 is connected to the first end 252 of the plurality of switching modules 251, and the number of the switching modules 251 connected to each scanning signal line 261 is the same as each other or different.
  • the scanning signal line 261 may also be provided in plurality, and the first ends 252 of the plurality of switch modules 251 are connected to each other and connected to one scanning signal line 261.
  • the number of the switch modules 251 to which the first ends 252 are connected to each other can also be divided and set according to the situation. but.
  • the total number of selection signal lines 260 and scan signal lines 261 is significantly less than the total number of leads 250 connecting the sub-electrodes 240.
  • FIG. 4 is a schematic structural diagram of an embedded display screen with a touch function according to a third embodiment of the present invention.
  • the display screen 30 further includes at least two pins 37a, 37b bound to the bonding package, and the selection signal line 360 and the scanning signal line 361 are correspondingly connected with the pins 37a, 37b of the at least two bonding packages, thereby
  • the touch controller 36 is connected to the drive selector 35.
  • the pins 37a, 37b of the at least two bonded bonding packages form a bonding area 37 disposed between the touch controller 36 and the selection controller 35.
  • the bonding The region 37 is disposed within the space formed by the upper substrate 31 and the lower substrate 32, and the position does not overlap with other elements distributed in the space.
  • the selection signal line 360 and the scanning signal line 361 are taken out from the touch controller 36 and are respectively connected to the pins 37a and 37b, and the selection signal line 360 and the scanning signal line 361 drawn from the pins 37a and 37b are connected thereto.
  • the drive selector 35 is connected. As such, the selection driver 35 and the touch controller 36 are connected.
  • the bonding region 37 can be provided with a plurality of pins, but the total number of pins is significantly less than the number of leads 340.
  • the display screen 30 can set a plurality of selection signal lines 360 and a plurality of scanning signal lines 361 according to the number of pins, and establish a connection between the driving selector 35 and the touch controller 36 as described above, as in the above embodiment. As mentioned, no further details are given here.
  • FIG. 4 In another embodiment, other elements in FIG. 4 can also be seen in FIG. 3 and corresponding textual descriptions.
  • the application also provides a terminal including the display screen in the above embodiment.
  • a terminal including the display screen in the above embodiment.
  • FIG. 5 is a schematic flowchart of a touch detection method according to an embodiment of the present invention.
  • the touch detection method shown in this embodiment includes the following steps:
  • step S40 a selection signal is received.
  • the selection signal is received during an interval in which the display screen is not subjected to display driving.
  • Step S41 selecting at least one of the plurality of touch electrodes in the display screen to be connected to the touch controller outside the display screen according to the selection signal, to implement a touch function; wherein the plurality of touch electrodes are used by the display screen
  • the common electrode is divided into segments.
  • FIG. 2 Please refer to FIG. 2 again.
  • a scan signal as shown in FIG. 2 to display a frame image (such as Frame1 or Frame2), and display the next frame after displaying one frame. Touch detection is performed during an interval period before the start of the screen, and the drive scan signal is not transmitted for display driving during the interval period.
  • a scan signal and a selection signal as shown in FIG. 2 are generated, and one of the leads connecting the plurality of sub-electrodes is selected to be electrically connected to the touch controller outside the display screen according to the selection signal, so that the touch control is performed.
  • the scan signal sent by the device can be transmitted to the selected sub-electrode of the lead wire for electrode scanning.
  • the touch controller further receives an electrode signal generated by the scan of the sub-electrode through the electrode through the scan signal line to the selected lead. In this way, the touch controller sends a corresponding selection signal, and the plurality of leads are selected one by one, so that the plurality of sub-electrodes receive the scan signals sent by the touch controller one by one to perform electrode scanning, and the corresponding electrode signals are fed back. To the touch controller. The touch controller determines a sub-electrode in which the signal change occurs in the touch electrode according to the received plurality of electrode signals to determine coordinates of the touch position.
  • the display screen is a self-capacitance embedded touch display screen.
  • the invention provides an embedded display screen, a terminal and a touch detection method with a touch function, which divides a common electrode of the display screen into a plurality of matrix array sub-electrodes to form a touch electrode, and sets a drive selector in the screen to
  • the plurality of lead wires are connected in one-to-one correspondence with the plurality of sub-electrodes, and the touch controller outside the screen is connected to the drive selector through the selection signal line and the scan signal line, and the selection signal is transmitted through the selection signal line to control the drive selector number in multiple pieces.
  • At least one of the leads is selectively connected to the scan signal line, and the total number of select signal lines and scan signal lines is less than the total number of leads, thereby greatly reducing the number of leads that need to be routed to the touch controller.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Hardware Design (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Position Input By Displaying (AREA)

Abstract

本发明公开了一种具有触摸功能的嵌入式显示屏、终端及触摸检测方法。该显示屏包括依次设置的上基板、公共电极、液晶显示层和下基板，公共电极被划分为多个矩阵排列的子电极以形成触摸电极，驱动选择器设置于上基板和下基板之间，通过多条引线与子电极一一对应地连接。触摸控制器设置在上基板和下基板所形成的空间之外，通过选择信号线以及扫描信号线与驱动选择器连接，选择信号线以及扫描信号线的总数量小于引线总数量；触摸控制器通过选择信号线发送选择信号以控制驱动选择器在多条引线中选择至少一条与扫描信号线导通连接。通过上述方式，本发明能够减少需要引到触摸控制器的引线数量。

Description

一种具有触摸功能的嵌入式显示屏、终端及触摸检测方法
【技术领域】
本发明涉及嵌入式显示屏，特别是涉及一种具有触摸功能的嵌入式显示屏、终端及具有触摸功能的嵌入式显示屏触摸检测方法。
【背景技术】
目前，市场上采用的触摸显示屏包括两种：分离式触摸显示屏和嵌入式触摸显示屏。其中，嵌入式触摸显示屏为在液晶面板内部嵌入触摸传感器，从而实现面板的薄型化合轻量化。
当前常用的嵌入式自电容触摸显示屏，显示屏的上下玻璃基板之间布置电极，且电极阵列布满整面。其中，电极可由任意导电层、任意导电材料构成。自电容触摸显示屏只需要设置单一电极即可，通过探测电极与触摸物体之间形成的电容来判断触摸事件，并通过相邻电极测得的电容大小进行权重计算得到触点位置。具体地，触摸显示屏的全部电极逐一引出并通过绑定Bonding封装方式形成多个Bonding引脚，每个电极对应一个引脚以连接至外部驱动芯片。驱动芯片对所有内置电极单独扫描以判断触摸事件。
但是，当触摸显示屏的侦测精度要求较高时，相应地需要布置较多的电极。而通过现有技术的连接结构，每个电极对应一个引脚，这样触摸显示屏的bonding引脚就会有相当多的引脚。这样的结构，对生产精度要求较高，且在一定程度上也会影响生产效率，因此这种触摸屏不适合量产。
【发明内容】
本发明主要解决的技术问题是提供一种具有触摸功能的嵌入式显示屏、终端及具有触摸功能的嵌入式显示屏触摸检测方法，通过驱动选择器逐一地选择与触摸控制器导通连接的电极以进行触摸扫描，极大地减少了需要引到触摸控制器的引线数量。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种具有触摸功能的嵌入式显示屏，所述显示屏包括上基板、下基板、分布在所述上基板和所述下基板之间的液晶显示层以及分布在所述上基板和所述液晶显示层之间的公共电极；其中，所述公共电极被划分为多个矩阵排列的子电极以形成触摸电极；所述显示屏还包括：驱动选择器，设置于所述上基板和所述下基板之间，通过多条引线与所述子电极一一对应地连接；以及触摸控制器，设置在所述上基板和所述下基板所形成的空间之外，通过选择信号线以及扫描信号线与所述驱动选择器连接，所述选择信号线以及扫描信号线的总数量小于所述引线总数量；所述触摸控制器通过所述选择信号线发送选择信号至所述驱动选择器，所述驱动选择器响应所述选择信号在所述多条引线中选择至少一条与所述扫描信号线导通连接。
其中，所述驱动选择器包括多个开关模块，每个开关模块包括第一端、第二端和控制端；所述每个开关模块的第一端彼此连接，并通过所述扫描信号线与所述触摸控制器连接；所述每个开关的第二端通过一条引线与一个所述子电极连接；所述每个开关的控制端通过所述选择信号线与所述触摸控制器连接。
其中，所述显示屏包括多条所述信号选择线，每条所述信号选择线与若干个所述开关模块的控制端连接，每条所述选择信号线连接的所述开关模块的数量彼此相同或不同。
其中，所述显示屏包括多条所述扫描信号线，每条所述扫描信号线与若干个所述开关模块的第一端连接，每条所述扫描信号线连接的所述开关模块的数量彼此相同或不同。
其中，所述显示屏还包括显示控制器，所述触摸控制器在所述显示控制器未对所述液晶显示层进行显示驱动的间隔时间段内发送所述选择信号。
其中，所述显示屏还包括至少两个绑定bonding封装的引脚，所述选择信号线和所述扫描信号线与所述至少两个bonding封装的引脚对应连接，将所述触摸控制器与所述驱动选择器连接起来。
其中，所述显示屏为自电容触摸显示屏。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种终端，所述终端包括上述任一项所述的具有触摸功能的嵌入式显示屏。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种触摸检测方法，所述方法包括：接收选择信号；根据所述选择信号在所述显示屏内的多个触控电极中选择至少一个与所述显示屏外的触摸控制器连接，实现触控功能；其中，所述多个触控电极由所述显示屏的公共电极划分形成。
其中，所述接收选择信号的步骤具体为：在所述显示屏未进行显示驱动的间隔时间段内接收所述选择信号。
本发明提供的一种具有触摸功能的嵌入式显示屏、终端以及触摸检测方法，将显示屏的公共电极划分为多个矩阵排列的子电极以形成触摸电极，并在屏内设置驱动选择器以通过多条引线与多个子电极一一对应地连接，屏外的触摸控制器通过选择信号线以及扫描信号线与驱动选择器连接，并通过选择信号线发送选择信号控制驱动选择器号在多条引线中选择至少一条与扫描信号线导通连接，并且选择信号线以及扫描信号线的总数量小于引线总数量，从而极大地减少了需要引到触摸控制器的引线数量。
【附图说明】
图1是本发明第一实施方式中的一种具有触摸功能的嵌入式显示屏的结构示意图；
图2是本发明实施方式中的具有触摸功能的嵌入式显示屏进行显示驱动和触摸检测的信号时序图；
图3是本发明第二实施方式中的一种具有触摸功能的嵌入式显示屏的结构示意图；
图4是本发明第三实施方式中的一种具有触摸功能的嵌入式显示屏的结构示意图；
图5是本发明实施方式中的一种触摸检测方法的流程示意图。
【具体实施方式】
下面结合附图和实施例对本发明进行详细说明。
请参阅图1，为本发明第一实施方式中的一种具有触摸功能的嵌入式显示屏的结构示意图。该实施方式示出的显示屏10包括：上基板11、下基板12、液晶显示层13。其中，该液晶显示层13分布在该上基板11和下基板12之间，该液晶显示层13的公共电极14分布在该上基板11和该液晶显示层13之间。该公共电极14被划分为多个矩阵排列的子电极140，从而形成触摸电极。
进一步地，该显示屏10还包括驱动选择器15以及触摸控制器16。其中，该驱动选择器15设置在该上基板11和该下基板12之间，并且每个子电极140通过一条引线150与该驱动选择器15连接。在本实施方式中，该驱动选择器15的位置不与该上基板11、下基板12、液晶显示层13以及公共电极14分布的位置重叠。
该触摸控制器16设置在该上基板11和下基板12所形成的空间A之外，并通过选择信号线160以及扫描信号线161与该驱动选择器15连接。其中，该选择信号线160和扫描信号线161的总数量小于引线150的总数量。
该触摸控制器16通过该选择信号线160发送选择信号至该驱动选择器15，该驱动选择器15响应该选择信号在多条引线150中选择至少一条与该扫描信号线161导通连接。
图1中仅示出描述本发明的显示屏所涉及到的元器件，在本实施方式中，该显示屏为In-cell显示屏，图1中未示出的其他元器件与现有技术相同，在此不加赘述。
在本实施方式中，该显示屏10为自电容触摸显示屏。
进一步地，该显示屏10还包括显示控制器17，在本实施方式中，该显示控制器17设置在该上基板11和下基板12所形成的空间A之外，并通过导线与该公共电极14连接。当进行图像显示时，该显示控制器17发送驱动扫描信号驱动液晶显示层13以显示图像，原理与现有技术相同，在此不加赘述。该触摸控制器15在该显示控制器17未对该液晶显示层13进行显示驱动的间隔时间段内发送该选择信号。
请同时参阅图2，本发明的显示屏10的工作原理具体如下所述。
当该显示屏10进行图像显示时，该显示控制器17发送如图2所示驱动扫描信号进行一帧图像（如Frame1或Frame2）的显示。并且，该显示控制器17扫描驱动该液晶显示层13进行连续的两帧图像（如Frame1和Frame2）显示时，发送显示前一帧图像的驱动扫描信号与发送显示后一帧图像的驱动扫描信号之间的时间间隔（V_Blanking Time）内，该触摸控制器16发送该选择信号。也就说，该触摸控制器16在该显示控制器17驱动该液晶显示层13显示一帧画面完毕后，显示下一帧画面开始之前的间隔时间段内进行触摸检测，在该间隔时间段内该显示控制器17不发送驱动扫描信号对该液晶显示层13进行显示驱动。
当进行触摸检测时，该触摸控制器16发送如图2所示的扫描信号和选择信号，该驱动选择器15通过该选择信号线接收该选择信号，并响应该选择信号在连接多个子电极140的引线150中选择一条引线与该扫描信号线161导通连接，使得该触摸控制器16发送的扫描信号能够通过该扫描信号线传送至与该被选择的引线连接的子电极140，进行电极扫描。该触摸控制器16还通过该扫描信号线至与该被选择的引线接收该子电极140经过电极扫描后所产生的电极信号。如此，该触摸控制器16发送相应的选择信号，使该驱动选择器15对该多条引线进行逐一地选择，使该多个子电极140逐一地接收该触摸控制器16发出的扫描信号以进行电极扫描，并将对应的电极信号反馈至该触摸控制器16。该触摸控制器16根据接收到的多个电极信号确定该触控电极中发生信号变化的子电极140，以确定触摸位置的坐标。
其中，该触摸控制器16发送扫描信号至子电极140进行电极扫描的方式为自电容扫描。
请参阅图3，为本发明第二实施方式中的一种具有触摸功能的嵌入式显示屏的结构示意图。该驱动选择器25包括多个开关模块251，每个开关模块251包括第一端252、第二端253和控制端254。其中，每个开关模块251的第一端252彼此连接，并通过该扫描信号线261与该触摸控制器26连接，每个开关模块251的第二端253通过一条引线250与一个子电极240连接，每个开关模块251的控制端254通过该选择信号线260与该触摸控制器26连接。
在其他实施方式中，该显示屏10包括多条信号选择线260，每条信号选择线260与若干个开关模块251的控制端254连接，每条选择信号线260连接的开关模块251的数量彼此相同或不同。具体地，该选择信号线260可以设置多条，每条选择信号线260通过引线250与若干个子电极240连接。其中，每条选择信号线260连接的子电极240的数量可以相同，也可以不同，可以根据实际情况进行划分和设置。同样地，该显示屏10包括多条扫描信号线261，每条扫描信号线261与若干个开关模块251的第一端252连接，每条扫描信号线261连接的开关模块251的数量彼此相同或不同。具体地，该扫描信号线261也可以设置多条，若干个开关模块251的第一端252彼此连接，并与一条扫描信号线261连接。所述第一端252彼此连接的开关模块251的数量也可以根据情况进行划分和设置。但是。选择信号线260和扫描信号线261的总数量要明显少于连接子电极240的引线250的总数量。
图3中其它元件请参见图1以及相应的文字说明。
请参阅图4，为本发明第三实施方式中的一种具有触摸功能的嵌入式显示屏的结构示意图。该显示屏30还包括至少两个绑定bonding封装的引脚37a、37b，该选择信号线360和该扫描信号线361与该至少两个bonding封装的引脚37a、37b对应连接，从而将该触摸控制器36与该驱动选择器35连接起来。具体地，该至少两个绑定bonding封装的引脚37a、37b形成一bonding区域37，该bonding区域37设置在该触摸控制器36与选择控制器35之间，在本实施方式中，该bonding区域37设置在该上基板31和下基板32所形成的空间之内，且位置不与分布在该空间内的其他元件重叠。该选择信号线360和该扫描信号线361从该触摸控制器36中引出并与引脚37a、37b分别对应连接，从引脚37a、37b引出的选择信号线360和该扫描信号线361与该驱动选择器35连接。如此，将该选择驱动器35和该触摸控制器36连接起来。
进一步地，该bonding区域37可以设置多个引脚，但引脚总数量明显地少于引线340的数量。该显示屏30可以根据引脚数量设置多条选择信号线360和多条扫描信号线361，并如上所述在该驱动选择器35和触摸控制器36之间建立连接，具体如上述实施方式所述，在此不加赘述。
图4中的其他元件请参见图1以及相应的文字说明。
在另一实施方式中，图4中的其他元件还可以参见图3以及相应的文字说明。
本申请还提供一种终端，该终端包括上述实施方式中的显示屏。具体请参阅上述的各个实施方式，在此不加赘述。
请参阅图5，为本发明实施方式中的一种触摸检测方法的流程示意图，该实施方式示出的触摸检测方法包括如下步骤：
步骤S40，接收选择信号。
具体地，在显示屏未进行显示驱动的间隔时间段内接收该选择信号。
步骤S41，根据该选择信号在该显示屏内的多个触控电极中选择至少一个与该显示屏外的触摸控制器连接，实现触控功能；其中，该多个触控电极由该显示屏的公共电极划分形成。
请再次参阅图2，当该显示屏进行图像显示时，发送如图2所示驱动扫描信号进行一帧图像（如Frame1或Frame2）的显示，并在显示一帧画面完毕后，显示下一帧画面开始之前的间隔时间段内进行触摸检测，在该间隔时间段内不发送驱动扫描信号进行显示驱动。
当进行触摸检测时，产生如图2所示的扫描信号和选择信号，根据该选择信号在连接多个子电极的引线中选择一条引线与显示屏外的触摸控制器导通连接，使该触摸控制器发送的扫描信号能够传送至该被选择的引线连接的子电极，进行电极扫描。
该触摸控制器还通过该扫描信号线至与该被选择的引线接收该子电极经过电极扫描后所产生的电极信号。如此，该触摸控制器发送相应的选择信号，对该多条引线进行逐一地选择，使该多个子电极逐一地接收该触摸控制器发出的扫描信号以进行电极扫描，并将对应的电极信号反馈至该触摸控制器。该触摸控制器根据接收到的多个电极信号确定该触控电极中发生信号变化的子电极，以确定触摸位置的坐标。
在本实施方式中，该显示屏为自电容嵌入式触摸显示屏。
本发明提供的一种具有触摸功能的嵌入式显示屏、终端以及触摸检测方法，将显示屏的公共电极划分为多个矩阵排列的子电极以形成触摸电极，并在屏内设置驱动选择器以通过多条引线与多个子电极一一对应地连接，屏外的触摸控制器通过选择信号线以及扫描信号线与驱动选择器连接，并通过选择信号线发送选择信号控制驱动选择器号在多条引线中选择至少一条与扫描信号线导通连接，并且选择信号线以及扫描信号线的总数量小于引线总数量，从而极大地减少了需要引到触摸控制器的引线数量。
在上述实施例中，仅对本发明进行了示范性描述，但是本领域技术人员在阅读本专利申请后可以在不脱离本发明的精神和范围的情况下对本发明进行各种修改。

Claims (16)

  1. 一种具有触摸功能的嵌入式显示屏，其中，所述显示屏包括上基板、下基板、分布在所述上基板和所述下基板之间的液晶显示层以及分布在所述上基板和所述液晶显示层之间的公共电极；其中，所述公共电极被划分为多个矩阵排列的子电极以形成触摸电极；所述显示屏还包括：
    驱动选择器，设置于所述上基板和所述下基板之间，通过多条引线与所述子电极一一对应地连接；以及
    触摸控制器，设置在所述上基板和所述下基板所形成的空间之外，通过选择信号线以及扫描信号线与所述驱动选择器连接，所述选择信号线以及扫描信号线的总数量小于所述引线总数量；所述触摸控制器通过所述选择信号线发送选择信号至所述驱动选择器，所述驱动选择器响应所述选择信号在所述多条引线中选择至少一条与所述扫描信号线导通连接。
  2. 根据权利要求1所述的具有触摸功能的嵌入式显示屏，其中，所述驱动选择器包括多个开关模块，每个开关模块包括第一端、第二端和控制端；所述每个开关模块的第一端彼此连接，并通过所述扫描信号线与所述触摸控制器连接；所述每个开关的第二端通过一条引线与一个所述子电极连接；所述每个开关的控制端通过所述选择信号线与所述触摸控制器连接。
  3. 根据权利要求2所述的具有触摸功能的嵌入式显示屏，其中，所述显示屏包括多条所述信号选择线，每条所述信号选择线与若干个所述开关模块的控制端连接，每条所述选择信号线连接的所述开关模块的数量彼此相同或不同。
  4. 根据权利要求3所述的具有触摸功能的嵌入式显示屏，其中，所述显示屏包括多条所述扫描信号线，每条所述扫描信号线与若干个所述开关模块的第一端连接，每条所述扫描信号线连接的所述开关模块的数量彼此相同或不同。
  5. 根据权利要求1所述的具有触摸功能的嵌入式显示屏，其中，所述显示屏还包括显示控制器，所述触摸控制器在所述显示控制器未对所述液晶显示层进行显示驱动的间隔时间段内发送所述选择信号。
  6. 根据权利要求1所述的具有触摸功能的嵌入式显示屏，其中，所述显示屏还包括至少两个绑定bonding封装的引脚，所述选择信号线和所述扫描信号线与所述至少两个bonding封装的引脚对应连接，将所述触摸控制器与所述驱动选择器连接起来。
  7. 根据权利要求1所述的具有触摸功能的嵌入式显示屏，其中，所述显示屏为自电容触摸显示屏。
  8. 一种终端，其中，所述终端包括具有触摸功能的嵌入式显示屏，所述显示屏包括上基板、下基板、分布在所述上基板和所述下基板之间的液晶显示层以及分布在所述上基板和所述液晶显示层之间的公共电极；其中，所述公共电极被划分为多个矩阵排列的子电极以形成触摸电极；所述显示屏还包括：
    驱动选择器，设置于所述上基板和所述下基板之间，通过多条引线与所述子电极一一对应地连接；以及
    触摸控制器，设置在所述上基板和所述下基板所形成的空间之外，通过选择信号线以及扫描信号线与所述驱动选择器连接，所述选择信号线以及扫描信号线的总数量小于所述引线总数量；所述触摸控制器通过所述选择信号线发送选择信号至所述驱动选择器，所述驱动选择器响应所述选择信号在所述多条引线中选择至少一条与所述扫描信号线导通连接。
  9. 根据权利要求8所述的终端，其中，所述驱动选择器包括多个开关模块，每个开关模块包括第一端、第二端和控制端；所述每个开关模块的第一端彼此连接，并通过所述扫描信号线与所述触摸控制器连接；所述每个开关的第二端通过一条引线与一个所述子电极连接；所述每个开关的控制端通过所述选择信号线与所述触摸控制器连接。
  10. 根据权利要求9所述的终端，其中，所述显示屏包括多条所述信号选择线，每条所述信号选择线与若干个所述开关模块的控制端连接，每条所述选择信号线连接的所述开关模块的数量彼此相同或不同。
  11. 根据权利要求10所述的终端，其中，所述显示屏包括多条所述扫描信号线，每条所述扫描信号线与若干个所述开关模块的第一端连接，每条所述扫描信号线连接的所述开关模块的数量彼此相同或不同。
  12. 根据权利要求8所述的终端，其中，所述显示屏还包括显示控制器，所述触摸控制器在所述显示控制器未对所述液晶显示层进行显示驱动的间隔时间段内发送所述选择信号。
  13. 根据权利要求8所述的终端，其中，所述显示屏还包括至少两个绑定bonding封装的引脚，所述选择信号线和所述扫描信号线与所述至少两个bonding封装的引脚对应连接，将所述触摸控制器与所述驱动选择器连接起来。
  14. 根据权利要求8所述的终端，其中，所述显示屏为自电容触摸显示屏。
  15. 一种触摸检测方法，其中，所述方法包括：
    接收选择信号；
    根据所述选择信号在所述显示屏内的多个触控电极中选择至少一个与所述显示屏外的触摸控制器连接，实现触控功能；其中，所述多个触控电极由所述显示屏的公共电极划分形成。
  16. 根据权利要求15所述的触摸检测方法，其中，所述接收选择信号的步骤具体为：
    在所述显示屏未进行显示驱动的间隔时间段内接收所述选择信号。
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