WO2017041341A1 - 阵列基板及触控显示装置 - Google Patents

阵列基板及触控显示装置 Download PDF

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Publication number
WO2017041341A1
WO2017041341A1 PCT/CN2015/091562 CN2015091562W WO2017041341A1 WO 2017041341 A1 WO2017041341 A1 WO 2017041341A1 CN 2015091562 W CN2015091562 W CN 2015091562W WO 2017041341 A1 WO2017041341 A1 WO 2017041341A1
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Prior art keywords
common electrode
touch
transistor
array substrate
common
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PCT/CN2015/091562
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English (en)
French (fr)
Inventor
蔡育徵
黄耀立
曹昌
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武汉华星光电技术有限公司
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Priority to US14/897,697 priority Critical patent/US10324322B2/en
Publication of WO2017041341A1 publication Critical patent/WO2017041341A1/zh

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    • 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
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • 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
    • 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
    • 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
    • G02F1/1343—Electrodes
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136286—Wiring, e.g. gate line, drain line
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
    • 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
    • G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
    • 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
    • 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
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134318—Electrodes characterised by their geometrical arrangement having a patterned common electrode
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
    • G02F2201/121—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode common or background
    • 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
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits

Definitions

  • the present invention relates to the field of display technologies, and in particular to an array substrate and a touch display device.
  • liquid crystal displays have become the most common display devices.
  • capacitive touch screens are also widely used in various electronic products such as mobile phones and tablet computers.
  • the more common capacitive touch screens are OGS (One glass solution), on-cell and in-cell.
  • OGS One glass solution
  • on-cell and in-cell are the more common capacitive touch screens.
  • in-cell technology has the advantages of lighter weight, better light transmission and more stable structure than OGS technology and on-cell technology due to its manufacturing process advantages.
  • a liquid crystal display using in-cell technology includes a plurality of common electrodes 1 and a plurality of address lines 2, each of which is connected to a driving circuit 3 through an address line 2, respectively.
  • the common electrode 1 is connected to the common voltage output terminal in the driving circuit 3 through the address line 2; during the touch scanning, the common electrode 1 is connected to the touch signal processing in the driving circuit 3 through the addressing line 2 Device.
  • PEP photo engraving process
  • An object of the present invention is to provide an array substrate and a touch display device to solve the technical problem that the manufacturing process of the existing array substrate is too complicated.
  • the present invention provides an array substrate including a pixel unit array divided by driving scan lines and data lines;
  • the array substrate further includes a first common electrode, a second common electrode, a touch scan line, a common transistor, and a touch transistor;
  • the first common electrode and the second common electrode are located in the same layer, and the first common electrode and the second common electrode are spaced apart from each other;
  • a source and a drain of the common transistor are respectively connected to the first common electrode and the second common electrode, and a gate of the common transistor is connected to the driving scan line;
  • a source and a drain of the touch transistor are respectively connected to the data line and the second common electrode, and a gate of the touch transistor is connected to the touch scan line.
  • each of the pixel units is provided with a driving transistor and a pixel electrode
  • a source and a drain of the driving transistor are respectively connected to the data line and the pixel electrode, and a gate of the driving transistor is connected to the driving scan line.
  • the first common electrode has a strip shape
  • the second common electrode has a block shape
  • the first common electrode includes a strip-shaped common electrode extending laterally and a strip-shaped common electrode extending longitudinally;
  • a laterally extending strip-shaped common electrode and a longitudinally extending strip-shaped common electrode are connected in a mesh shape;
  • the second common electrode is located in a grid of the first common electrode.
  • the width of the first common electrode is between 50 ⁇ m and 60 ⁇ m.
  • a spacing between the first common electrode and the second common electrode is between 2 ⁇ m and 5 ⁇ m.
  • the present invention also provides a touch display device including the above array substrate.
  • the driving scan line transmits a scan signal
  • the data line transmits a gray scale signal
  • the touch scan line transmits a scan signal
  • the data line transmits a touch signal
  • the technical solution provided by the invention can realize time-sharing scanning of display and touch.
  • the scan line is driven to transmit the scan signal so that the first common electrode and the second common electrode can be turned on by the common transistor, and the potentials of the first common electrode and the second common electrode are the same, and the display is performed for each pixel unit.
  • the touch scan line transmits a scan signal to turn on the touch transistor, and each second common electrode can independently transmit the touch signal to the corresponding data line through the touch transistor, and further transmit to the drive. Circuit.
  • the array substrate provided by the present invention can realize the time-sharing scanning of the display and the touch by using the structures of the first common electrode, the second common electrode, the touch scan line, the common transistor, the touch transistor, and the like, without setting the third
  • the metal layer simplifies the manufacturing process of the array substrate, and solves the technical problem that the manufacturing process of the array substrate in the prior art is too complicated.
  • FIG. 1 is a schematic view of a conventional touch display device
  • FIG. 2 is a schematic diagram of an array substrate according to an embodiment of the present invention.
  • FIG. 3 is a partial schematic view of an array substrate according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a touch display device according to an embodiment of the invention.
  • FIG. 5 is a timing diagram of signals of a touch display device according to an embodiment of the invention.
  • FIG 6 and 7 are schematic views of an array substrate in another embodiment of the present invention.
  • the embodiment of the invention provides a touch display device, which can be an electronic device such as a mobile phone or a tablet computer, and includes components such as an array substrate and a driving circuit.
  • the array substrate includes a pixel unit array divided by a driving scan line PG and a data line D, and a driving transistor T1 and a pixel electrode 10 are disposed in each pixel unit.
  • the source and the drain of the driving transistor T1 are connected to the data line D and the pixel electrode 10, respectively, and the gate of the driving transistor T1 is connected to drive the scanning line PG.
  • the array substrate further includes a first common electrode 20, a second common electrode 30, a touch scan line SG, a common transistor T2, and a touch transistor T3.
  • the first common electrode 20 has a strip shape
  • the second common electrode 30 has a block shape.
  • the first common electrode 20 and the second common electrode 30 are located in the same layer, and the first common electrode 20 and the second common electrode 30 are spaced apart from each other.
  • the first common electrode 20 and the second common electrode 30 in the embodiment are located in the same layer, the first common electrode 20 and the second common electrode 30 can be formed in the same patterning process during the manufacturing process of the array substrate. To save the number of patterning processes and simplify the manufacturing process of the array substrate.
  • the first common electrode 20 includes a laterally extending strip-shaped common electrode 21 and a longitudinally extending The strip-shaped common electrode 22, and the laterally extending first common electrode 21 and the longitudinally extending first common electrode 22 are connected in a mesh shape, and the second common electrode 30 is located in each of the grids of the first common electrode 20.
  • the width of the first common electrode 20 is preferably between 50 ⁇ m and 60 ⁇ m, which is 60 ⁇ m in this embodiment.
  • the spacing between the first common electrode 20 and the second common electrode 30 is preferably between 2 ⁇ m and 5 ⁇ m, which is 4 ⁇ m in this embodiment.
  • the source and the drain of the common transistor T2 are connected to the first common electrode 20 and the second common electrode 30, respectively, and the gate of the common transistor T2 is connected to drive the scan line PG.
  • the source and the drain of the touch transistor T3 are respectively connected to the data line D and the second common electrode 30, and the gate of the touch transistor T3 is connected to the touch scan line SG.
  • a Gate Driver On Array (GOA) technology is adopted, that is, the array substrate is a GOA array substrate, each of the driving scan lines PG1 PG PGn and each touch scan Lines SG1 to SGN are all taken out from the GOA area.
  • the GOA technology is used to fabricate the gate driving circuit on the array substrate to realize the progressive scanning of the scanning lines. Therefore, the gate driving circuit can be fabricated in the peripheral region of the array substrate by using the original process of the array substrate to replace the original one. External driver chip. Therefore, the GOA technology can eliminate the bonding process of the driver chip, have the opportunity to increase the production capacity and reduce the product cost, and can reduce the frame width of the touch display device.
  • each touch scan line is divided into multiple branches after being extracted from the GOA area. Because the area of the second common electrode is large, a plurality of touch transistors are required to simultaneously charge a second common electrode to bring the second common electrode to a predetermined potential.
  • the plurality of branches of the touch scan line SG1 correspond to the same second common electrode, and each branch is connected to the gate of one touch transistor. When the SG1 outputs a high level, each branch can turn on a touch transistor, and the data line can simultaneously charge a second common electrode through the touch transistors.
  • the touch display device provided in this embodiment further includes a driving circuit 40, and each of the data lines D1 to Dm is taken out from the driving circuit 40.
  • the driving circuit 40 When displaying an image, the driving circuit 40 outputs a gray scale signal to each data line; during touch scanning, the driving circuit 40 outputs a reference touch signal to each data line, and receives the touch signal through the data line.
  • the refresh rate of the touch display device provided by the embodiment of the invention is above 60 Hz. As shown in FIG. 5, the embodiment takes 60 Hz as an example, and the time of each frame is 16.67 ms, which includes a display frame and a touch frame.
  • the specific work process is as follows:
  • the drive scan line PG transmits the scan signal line by line, and the drive transistor T1 and the common transistor T2 are turned on.
  • the first common electrode 20 and the second common electrode 30 can be electrically connected to each other through the common transistor T2, so that the potentials of the first common electrode 20 and the second common electrode 30 are the same, that is, the same as a common voltage, thereby providing display for each pixel unit. Common voltage.
  • the driving circuit 40 outputs a gray scale signal to the data line D, and the data line D inputs a gray scale signal to the pixel electrode 10 in the pixel unit through the driving transistor T1, so that the pixel electrode 10 reaches a certain gray scale voltage.
  • the pixel electrode 10 and the second common electrode 30 (or the first common electrode 20) have a certain potential difference. And an electric field is formed to deflect the liquid crystal molecules to realize image display.
  • the touch scan line SG transmits the scan signal line by line, and the touch transistor T3 is turned on.
  • the reference touch signal outputted by the driving circuit 40 to the data line D can be transmitted to the second common electrode 30 through the touch transistor T3, and each of the second common electrodes 30 is independent of each other.
  • the touch signal can be transmitted to the driving circuit 40 through the touch transistor T3 and the data line D, thereby realizing the collection and processing of the touch signal.
  • the first common electrode, the second common electrode, the touch scan line, the common transistor, the touch transistor, and the like are disposed, thereby realizing display and touch.
  • the time division scanning does not require the provision of the third metal layer, thereby simplifying the manufacturing process of the array substrate, solving the technical problem that the manufacturing process of the array substrate in the prior art is too complicated, and saving the manufacturing cost of the touch display device.
  • each of the common electrodes is connected to the driving circuit through an address line.
  • the addressing is performed by using the data line, there is no need to additionally set the addressing line, thereby significantly reducing the number of signal channels of the driving circuit, and further saving the manufacturing cost of the touch display device.
  • the first common electrode may also be disposed in only one direction.
  • the strip-shaped first common electrode 20 is disposed only in the longitudinal direction, and the block-shaped second common electrode 30 is disposed between the respective first common electrodes 20.
  • the strip-shaped first common electrode 20 may be disposed only laterally, and the block-shaped second common electrode 30 may be disposed between the respective first common electrodes 20.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Human Computer Interaction (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Geometry (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal (AREA)

Abstract

一种阵列基板及触控显示装置，属于显示技术领域，解决了现有的阵列基板的制造过程过于复杂的技术问题。该阵列基板包括由驱动扫描线(PG)、数据线(D)、第一公共电极(20)、第二公共电极(30)、触控扫描线(SG)、公共晶体管(T2)和触控晶体管(T3)；第一公共电极(20)和第二公共电极(30)相互间隔设置；公共晶体管(T2)的源极和漏极分别连接第一公共电极(20)和第二公共电极(30)，栅极连接驱动扫描线(PG)；触控晶体管(T3)的源极和漏极分别连接数据线(D)和第二公共电极(30)，栅极连接触控扫描线(SG)。

Description

阵列基板及触控显示装置
本申请要求享有2015年9月7日提交的名称为“阵列基板及触控显示装置”的中国专利申请CN201510566336.9的优先权，其全部内容通过引用并入本文中。
技术领域
本发明涉及显示技术领域，具体地说，涉及一种阵列基板及触控显示装置。
背景技术
随着显示技术的发展，液晶显示器已经成为最为常见的显示装置。
另一方面，随着智能电子产品的普及，电容式触控屏也被广泛的应用于手机、平板电脑等各种电子产品中。目前较为多见的电容式触控屏有OGS(One glass solution)、on-cell和in-cell三种技术。其中，in-cell技术由于其制作工艺上的优势，相比OGS技术和on-cell技术，具有更加轻薄、透光性更好、结构更加稳定等优点。
如图1所示，采用in-cell技术的液晶显示器中包括若干公共电极1及若干寻址线2，每个公共电极1各自通过一条寻址线2连接至驱动电路3。在显示图像时，公共电极1通过寻址线2连接至驱动电路3中的公共电压输出端；在触控扫描时，公共电极1通过寻址线2连接至驱动电路3中的触控信号处理器。
现有技术至少存在以下技术问题：为了实现in-cell技术的触控屏，至少需要在阵列基板中增设第三金属层(即寻址线)，及第三金属层与其他导体层之间的绝缘层等结构。因此，在阵列基板的制造过程中，需要增加至少一次构图工艺(Photo Engraving Process，简称PEP)，造成阵列基板的制造过程过于复杂的技术问题。
发明内容
本发明的目的在于提供一种阵列基板及触控显示装置，以解决现有的阵列基板的制造过程过于复杂的技术问题。
本发明提供一种阵列基板，包括由驱动扫描线和数据线划分成的像素单元阵列；
所述阵列基板还包括第一公共电极、第二公共电极、触控扫描线、公共晶体管和触控晶体管；
所述第一公共电极和所述第二公共电极位于同一图层，且所述第一公共电极和所述第二公共电极相互间隔设置；
所述公共晶体管的源极和漏极分别连接所述第一公共电极和所述第二公共电极，所述公共晶体管的栅极连接所述驱动扫描线；
所述触控晶体管的源极和漏极分别连接所述数据线和所述第二公共电极，所述触控晶体管的栅极连接所述触控扫描线。
进一步的是，每个所述像素单元中设置有驱动晶体管和像素电极；
所述驱动晶体管的源极和漏极分别连接所述数据线和所述像素电极，所述驱动晶体管的栅极连接所述驱动扫描线。
优选的是，所述第一公共电极呈条状，所述第二公共电极呈块状。
进一步的是，所述第一公共电极包括横向延伸的条状公共电极和纵向延伸的条状公共电极；
横向延伸的条状公共电极和纵向延伸的条状公共电极连接成网状；
所述第二公共电极位于所述第一公共电极的网格中。
优选的是，所述第一公共电极的宽度在50μm至60μm之间。
优选的是，所述第一公共电极与所述第二公共电极之间的间距在2μm至5μm之间。
本发明还提供一种触控显示装置，其中包括上述的阵列基板。
进一步的是，在显示图像时，所述驱动扫描线传输扫描信号，所述数据线传输灰阶信号；
在触控扫描时，所述触控扫描线传输扫描信号，所述数据线传输触控信号。
本发明带来了以下有益效果：本发明提供的技术方案能够实现显示与触控的分时扫描。在显示图像时，驱动扫描线传输扫描信号，使第一公共电极和第二公共电极能够通过公共晶体管导通，则第一公共电极和第二公共电极的电位相同，并为各个像素单元的显示提供公共电压。在触控扫描时，触控扫描线传输扫描信号，使触控晶体管导通，每个第二公共电极能够独立的将触控信号通过触控晶体管传输至相应的数据线，并进一步传输至驱动电路。
因此，本发明提供的阵列基板能够利用第一公共电极、第二公共电极、触控扫描线、公共晶体管、触控晶体管等结构，实现显示与触控的分时扫描，而不需要设置第三金属层，从而简化了阵列基板的制造过程，解决了现有技术中阵列基板的制造过程过于复杂的技术问题。
本发明的其它特征和优点将在随后的说明书中阐述，并且，部分的从说明书中变得显 而易见，或者通过实施本发明而了解。本发明的目的和其他优点可通过在说明书、权利要求书以及附图中所特别指出的结构来实现和获得。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要的附图做简单的介绍：
图1是现有的触控显示装置的示意图；
图2是本发明实施例提供的阵列基板的示意图；
图3是本发明实施例提供的阵列基板的局部示意图；
图4是本发明实施例提供的触控显示装置的示意图；
图5是本发明实施例提供的触控显示装置的信号时序图；
图6和图7是本发明其他实施例中的阵列基板的示意图。
具体实施方式
以下将结合附图及实施例来详细说明本发明的实施方式，借此对本发明如何应用技术手段来解决技术问题，并达成技术效果的实现过程能充分理解并据以实施。需要说明的是，只要不构成冲突，本发明中的各个实施例以及各实施例中的各个特征可以相互结合，所形成的技术方案均在本发明的保护范围之内。
本发明实施例提供一种触控显示装置，可以是手机、平板电脑等电子设备，其中包括阵列基板、驱动电路等部件。
如图2和图3所示，该阵列基板包括由驱动扫描线PG和数据线D划分成的像素单元阵列，每个像素单元中设置有驱动晶体管T1和像素电极10。驱动晶体管T1的源极和漏极分别连接数据线D和像素电极10，驱动晶体管T1的栅极连接驱动扫描线PG。
本实施例中，该阵列基板还包括第一公共电极20、第二公共电极30、触控扫描线SG、公共晶体管T2和触控晶体管T3。其中，第一公共电极20呈条状，第二公共电极30呈块状。第一公共电极20和第二公共电极30位于同一图层，且第一公共电极20和第二公共电极30相互间隔设置。
因为本实施例中的第一公共电极20和第二公共电极30位于同一图层，所以在阵列基板的制造过程中，第一公共电极20和第二公共电极30可以在同一次构图工艺中形成，以节省构图工艺的次数，简化阵列基板的制造过程。
作为一个优选方案，第一公共电极20包括横向延伸的条状公共电极21和纵向延伸的 条状公共电极22，并且横向延伸的第一公共电极21和纵向延伸的第一公共电极22连接成网状，第二公共电极30位于第一公共电极20的每个网格中。第一公共电极20的宽度优选在50μm至60μm之间，本实施例中为60μm。第一公共电极20与第二公共电极30之间的间距优选在2μm至5μm之间，本实施例中为4μm。
如图3所示，公共晶体管T2的源极和漏极分别连接第一公共电极20和第二公共电极30，公共晶体管T2的栅极连接驱动扫描线PG。触控晶体管T3的源极和漏极分别连接数据线D和第二公共电极30，触控晶体管T3的栅极连接触控扫描线SG。
如图4所示，本实施例中采用了阵列基板行驱动(Gate Driver On Array，简称GOA)技术，即该阵列基板为GOA阵列基板，各条驱动扫描线PG1～PGn以及各条触控扫描线SG1～SGN均从GOA区域引出。采用GOA技术将栅极驱动电路制作在阵列基板上，实现对扫描线的逐行扫描，因此可以运用阵列基板的原有制程将栅极驱动电路制作在阵列基板的外围区域，以替代原有的外接驱动芯片。因此，GOA技术能够省去驱动芯片的绑定(bonding)工序，有机会提升产能并降低产品成本，而且可以减小触控显示装置的边框宽度。
作为一个优选方案，每条触控扫描线从GOA区域引出后都分成多个支路。因为第二公共电极的面积较大，所以需要多个触控晶体管同时为一个第二公共电极充电，才能使第二公共电极达到预定的电位。例如，触控扫描线SG1的多条支路均对应于同一个第二公共电极，且每条支路各自与一个触控晶体管的栅极相连。当SG1输出高电平时，每个支路能够各自导通一个触控晶体管，数据线就可以同时通过这些触控晶体管向一个第二公共电极充电。
如图4所示，本实施例提供的触控显示装置还包括驱动电路40，各条数据线D1～Dm均从驱动电路40中引出。在显示图像时，驱动电路40向每条数据线输出灰阶信号；在触控扫描时，驱动电路40向每条数据线输出基准触控信号，并通过数据线接收触控信号。
本发明实施例提供的触控显示装置的刷新率在60Hz以上。如图5所示，本实施例以60Hz为例，每帧的时间为16.67ms，其中包括显示帧和触控帧。具体工作过程如下：
在显示图像时(显示帧)，驱动扫描线PG逐行传输扫描信号，驱动晶体管T1和公共晶体管T2导通。第一公共电极20和第二公共电极30能够通过公共晶体管T2相互导通，使第一公共电极20和第二公共电极30的电位相同，即同为公共电压，从而为各个像素单元的显示提供公共电压。同时，驱动电路40向数据线D输出灰阶信号，数据线D通过驱动晶体管T1向像素单元中的像素电极10输入灰阶信号，使像素电极10达到一定的灰阶电压。像素电极10与第二公共电极30(或第一公共电极20)就会具有一定的电位差， 并形成电场，使液晶分子发生偏转，实现图像的显示。
在触控扫描时(触控帧)，触控扫描线SG逐行传输扫描信号，触控晶体管T3导通。驱动电路40向数据线D输出的基准触控信号，可以通过触控晶体管T3传输至第二公共电极30，并且每个第二公共电极30都是相互独立的。当用户的触摸操作使某一第二公共电极30产生触控信号时，该触控信号就可以通过触控晶体管T3及数据线D传输至驱动电路40，从而实现触控信号的采集处理。
因此，本发明实施例提供的触控显示装置及阵列基板中，通过设置第一公共电极、第二公共电极、触控扫描线、公共晶体管、触控晶体管等结构，实现了显示与触控的分时扫描，而不需要设置第三金属层，从而简化了阵列基板的制造过程，解决了现有技术中阵列基板的制造过程过于复杂的技术问题，节省了触控显示装置的制造成本。
另外，现有技术中，每个公共电极各自通过一条寻址线连接至驱动电路。本发明实施例中，由于利用数据线进行寻址，不需要额外设置寻址线，因此显著降低了驱动电路的信号通道的数量，进一步节省了触控显示装置的制造成本。
应当说明的是，在其他实施方式中，第一公共电极也可以只延单一方向设置。例如图6所示，条状的第一公共电极20只延纵向设置，块状的第二公共电极30设置于各第一公共电极20之间。或者，也可以如图7所示，条状的第一公共电极20只延横向设置，块状的第二公共电极30设置于各第一公共电极20之间。
虽然本发明所公开的实施方式如上，但所述的内容只是为了便于理解本发明而采用的实施方式，并非用以限定本发明。任何本发明所属技术领域内的技术人员，在不脱离本发明所公开的精神和范围的前提下，可以在实施的形式上及细节上作任何的修改与变化，但本发明的专利保护范围，仍须以所附的权利要求书所界定的范围为准。

Claims (13)

  1. 一种阵列基板，包括由驱动扫描线和数据线划分成的像素单元阵列；
    所述阵列基板还包括第一公共电极、第二公共电极、触控扫描线、公共晶体管和触控晶体管；
    所述第一公共电极和所述第二公共电极位于同一图层，且所述第一公共电极和所述第二公共电极相互间隔设置；
    所述公共晶体管的源极和漏极分别连接所述第一公共电极和所述第二公共电极，所述公共晶体管的栅极连接所述驱动扫描线；
    所述触控晶体管的源极和漏极分别连接所述数据线和所述第二公共电极，所述触控晶体管的栅极连接所述触控扫描线。
  2. 根据权利要求1所述的阵列基板，其中，每个所述像素单元中设置有驱动晶体管和像素电极；
    所述驱动晶体管的源极和漏极分别连接所述数据线和所述像素电极，所述驱动晶体管的栅极连接所述驱动扫描线。
  3. 根据权利要求1所述的阵列基板，其中，所述第一公共电极呈条状，所述第二公共电极呈块状。
  4. 根据权利要求3所述的阵列基板，其中，所述第一公共电极包括横向延伸的条状公共电极和纵向延伸的条状公共电极；
    横向延伸的条状公共电极和纵向延伸的条状公共电极连接成网状；
    所述第二公共电极位于所述第一公共电极的网格中。
  5. 根据权利要求3所述的阵列基板，其中，所述第一公共电极的宽度在50μm至60μm之间。
  6. 根据权利要求3所述的阵列基板，其中，所述第一公共电极与所述第二公共电极之间的间距在2μm至5μm之间。
  7. 一种触控显示装置，包括阵列基板；
    所述阵列基板，包括由驱动扫描线和数据线划分成的像素单元阵列；
    所述阵列基板还包括第一公共电极、第二公共电极、触控扫描线、公共晶体管和触控晶体管；
    所述第一公共电极和所述第二公共电极位于同一图层，且所述第一公共电极和所述第二公共电极相互间隔设置；
    所述公共晶体管的源极和漏极分别连接所述第一公共电极和所述第二公共电极，所述 公共晶体管的栅极连接所述驱动扫描线；
    所述触控晶体管的源极和漏极分别连接所述数据线和所述第二公共电极，所述触控晶体管的栅极连接所述触控扫描线。
  8. 根据权利要求7所述的触控显示装置，其中，每个所述像素单元中设置有驱动晶体管和像素电极；
    所述驱动晶体管的源极和漏极分别连接所述数据线和所述像素电极，所述驱动晶体管的栅极连接所述驱动扫描线。
  9. 根据权利要求7所述的触控显示装置，其中，所述第一公共电极呈条状，所述第二公共电极呈块状。
  10. 根据权利要求9所述的触控显示装置，其中，所述第一公共电极包括横向延伸的条状公共电极和纵向延伸的条状公共电极；
    横向延伸的条状公共电极和纵向延伸的条状公共电极连接成网状；
    所述第二公共电极位于所述第一公共电极的网格中。
  11. 根据权利要求9所述的触控显示装置，其中，所述第一公共电极的宽度在50μm至60μm之间。
  12. 根据权利要求9所述的触控显示装置，其中，所述第一公共电极与所述第二公共电极之间的间距在2μm至5μm之间。
  13. 根据权利要求7所述的触控显示装置，其中，在显示图像时，所述驱动扫描线传输扫描信号，所述数据线传输灰阶信号；
    在触控扫描时，所述触控扫描线传输扫描信号，所述数据线传输触控信号。
PCT/CN2015/091562 2015-09-07 2015-10-09 阵列基板及触控显示装置 WO2017041341A1 (zh)

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