WO2015062274A1 - Substrat de matrice, panneau d'affichage à commande tactile et dispositif d'affichage - Google Patents

Substrat de matrice, panneau d'affichage à commande tactile et dispositif d'affichage Download PDF

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Publication number
WO2015062274A1
WO2015062274A1 PCT/CN2014/079449 CN2014079449W WO2015062274A1 WO 2015062274 A1 WO2015062274 A1 WO 2015062274A1 CN 2014079449 W CN2014079449 W CN 2014079449W WO 2015062274 A1 WO2015062274 A1 WO 2015062274A1
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WO
WIPO (PCT)
Prior art keywords
signal line
electrode
sensing
driving signal
pixel electrode
Prior art date
Application number
PCT/CN2014/079449
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English (en)
Chinese (zh)
Inventor
程鸿飞
张玉欣
Original Assignee
京东方科技集团股份有限公司
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Publication of WO2015062274A1 publication Critical patent/WO2015062274A1/fr

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Classifications

    • 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
    • G06F3/044—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
    • G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
    • 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
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Definitions

  • the present invention relates to the field of display technologies, and in particular, to an array substrate, a touch display panel, and a display device:
  • the touch screen can be divided into: Add on Mode Tfouch Panel, On Cdl Touch Panel and in-line touch screen (In Ceii Touch Panel, most mutual capacitive touch screens are externally mounted, That is, the touch screen is separately produced from the display screen and then attached together.
  • This technology has the disadvantages of high production cost, low light transmittance, and thick module.
  • the embedded touch screen technology has gradually become a new favorite of research and development.
  • the in-cell touch panel is disposed on the substrate of the display screen by using the driving electrode line and the sensing electrode line for implementing the touch function.
  • the touch display device with the embedded touch screen technology has a thickness compared to the external touch display device. Thinner, wider viewing angles, higher performance, and lower cost.
  • ADS Advanced SuperDimension Switch
  • the touch driving IC circuit wherein, in the first time period, the display driving IC circuit drives the common electrode and the pixel electrode to form a multi-dimensional electric field, and the display function can be realized; in the second time period, the touch driving IC circuit drives the driving electrode, A mutual inductance capacitor is generated between the driving electrode and the sensing electrode, and the touch function can be realized.
  • a common electrode, a pixel electrode, a driving electrode, and a sensing electrode are respectively formed on a substrate of the array substrate, and the sensing electrode and the driving electrode are respectively implemented in different layers to implement a touch function, and the manufacturing process is performed.
  • the complexity is complicated, and the integration of the driver IC circuit is not easy to implement.
  • An object of the present invention is to provide an array substrate, a touch display panel, and a display device, which can perform a process step and easily integrate the driving circuit.
  • the technical solution provided by the present invention is as follows:
  • An array substrate the array substrate includes a substrate, a plurality of sub-pixels are formed on the substrate, each of the sub-pixels is provided with a display unit, and at least some of the sub-pixels are provided with a touch unit;
  • the display unit includes: a common electrode formed on the base substrate; a pixel electrode formed on the base substrate and insulated from the common electrode and disposed in different layers; and being arranged on the base substrate a gate line and a data line; and a first thin film transistor formed on the base substrate and connecting the » line, the data line, and the pixel electrode;
  • the touch unit includes: a sensing electrode formed on the substrate and insulated from the pixel electrode and disposed in the same layer; a driving signal line and an inductive signal line arranged on the substrate; The sensing electrode is connected to the sensing signal line; wherein the pixel electrode in the plurality of sub-pixels provided with the sensing electrode is further connected as the driving electrode to the driving signal line.
  • the touch unit further includes a second thin film transistor for connecting the pixel electrode and the driving signal line; wherein the driving signal line includes a first driving signal line and a second driving signal line, The drain electrode of the second thin film transistor is connected to the first driving signal line, the source of the second thin film transistor is connected to the second driving signal line, and the drain of the second thin film transistor is connected to the pixel electrode.
  • the driving signal line includes a first driving signal line and a second driving signal line
  • the drain electrode of the second thin film transistor is connected to the first driving signal line
  • the source of the second thin film transistor is connected to the second driving signal line
  • the drain of the second thin film transistor is connected to the pixel electrode.
  • the driving signal line is disposed in the same layer as the gate line.
  • the driving signal line is disposed in parallel with the gate line, and the driving signal line and the gate line in the sub-pixel provided with the sensing electrode are respectively located on opposite sides of the pixel electrode in the same sub-pixel.
  • the sensing signal line is disposed in the same layer as the data line.
  • the sensing signal line is disposed in parallel with the data line, and the sensing signal line and the data line in the sub-pixel provided with the sensing electrode are respectively located on opposite sides of the pixel electrode in the same sub-pixel.
  • the pixel electrodes in the sub-pixels of the peer arrangement in which the sensing electrodes are disposed are connected by the driving signal lines; the sensing electrodes in the sub-pixels arranged in the same row of the sensing electrodes pass the sensing signals Wire connection.
  • sensing signal line and the sensing electrode are in different layers, and
  • the via electrode is connected to the via hole on the insulating layer between the sensing signal lines.
  • the sensing signal line is disposed in the same layer as the sensing electrode, and is directly connected to the sensing electrode;
  • the driving signal line is disposed in the same layer as the pixel electrode, and is directly connected to the pixel electrode.
  • the driving signal line and the pixel electrode are formed of the same material.
  • a touch display panel includes a color filter substrate and an array substrate as described above disposed opposite the color film substrate.
  • a display device comprising the array substrate as described above.
  • the pixel electrode on the array substrate is simultaneously used as the driving electrode, and the Ffi can be used for the time division multiplexing technique.
  • the common electrode and the pixel electrode are mutually 3 ⁇ 4 realizes the display function, and in the touch time period, the pixel electrode can act as a driving electrode and interact with the sensing electrode to form a mutual inductance capacitor. Since the pixel electrode and the sensing electrode are disposed in the same layer, a photolithography process can be simultaneously used.
  • the sensing electrode and the pixel electrode can perform the process steps and easily integrate the driving IC circuit.
  • FIG. 1 is a schematic structural view of an array substrate provided by the present invention.
  • Figure 2 is a schematic cross-sectional view of the A-A direction in Figure i;
  • FIG. 3 is a timing chart of operation of the touch display panel provided by the present invention.
  • FIG. 4 is a schematic structural diagram of a touch display panel provided by the present invention.
  • the sensing electrodes and the driving electrodes are in different layers, and the manufacturing process steps are many, so that the problem of driving IC integration is difficult to be realized.
  • the present invention provides an array substrate capable of achieving touch Simplify manufacturing process steps while controlling and displaying functions Easy to implement the integration of the drive ic circuit.
  • the array substrate provided by the present invention includes a substrate substrate 100 and a plurality of sub-pixels formed on the substrate substrate 100, each of the sub-pixels is provided with a display unit, and a touch unit is disposed in each of the sub-pixels or in a plurality of sub-pixels disposed at intervals;
  • the display unit includes:
  • a pixel electrode 300 formed on the base substrate 100 and insulated from the common electrode 200 and not disposed;
  • a gate line 400 and a data line 500 which are alternately arranged on the base substrate 100;
  • the gate of the first thin film transistor 600 is connected to the gate line 400, the source of the first thin film transistor 600 is connected to the data line 500, the drain of the first thin film transistor 600 is connected to the pixel electrode 300;
  • the touch unit includes:
  • the driving signal line Tx 901 and the sensing signal line Rx 902 are arranged on the base substrate 100, and the sensing electrode 700 is connected to the sensing signal line Rx n 902 and controlled by the sensing signal line Rx n 902
  • the pixel electrode 300 in the sub-pixel provided with the sensing electrode 700 is connected to the driving signal line Tn 901, and is controlled as a driving electrode by the driving signal line Txn 901.
  • n is an integer greater than or equal to 1, indicating different driving signal lines and sensing signal lines such as Rxl, Rx2 Rxn; Tx ⁇ 2 ⁇ .
  • the pixel electrode of the display unit and the driving electrode of the touch unit are the same electrode, and the display driving signal can be applied to the gate line 400 and the data line 500 during the display period.
  • the common electrode 200 and the pixel electrode 300 interact to realize a display function.
  • the touch signal is applied to the driving signal line 901, and the pixel electrode 300 serves as a driving electrode.
  • the sensing electrode 700 to form a mutual inductance capacitor to implement a touch function.
  • the process step can be performed; and the pixel electrode 300 and the sensing electrode 700 are in the same layer, and the same photolithography process can be used simultaneously.
  • the sensing electrode 700 and the pixel electrode 300 are taken out to further achieve the purpose of simplifying the process steps, and the integration of the driving IC circuit is easily realized.
  • the pixel electrode 300 (drive electrode) and the driving signal line 90 90 90 are connected through a thin film transistor, that is, through The second thin film transistor 800 is connected.
  • the driving signal line 901 901 includes a first driving signal line 901 a and a second driving signal line 901 b , wherein the » terminal of the second thin film transistor 800 is connected to the first driving signal line 901 a, a source of the second thin film transistor 800 is connected to the second driving signal line 901b, and a drain of the second thin film transistor 800 is connected to the pixel electrode 300.
  • the second thin film transistor 800 can be formed while the first thin film transistor 600 is being formed.
  • the pixel electrode 300 and the driving signal line Txn 901 may also be directly connected.
  • the driving signal line Txii 901 can also be disposed in the same layer as the pixel electrode 300 and directly connected to the pixel electrode 300.
  • the driving signal line Tn 901 can be formed by using the same material as the pixel electrode 300 (for example, all). ), a different material may be used, for example, the driving signal line Txn 901 is made of metal, and the pixel electrode 300 is made of ITO or the like; or the pixel electrode 300 and the driving signal line Txn 901 are connected by other means. This is not to be enumerated.
  • the present invention provides only an optional connection manner of the pixel electrode 300 and the driving signal line Tx n 901, but is not limited thereto.
  • the driving signal line Tx n 901 is disposed in the same layer as the gate line 400, that is, the driving signal line Tx n 901 is made in the same manner as the gate line 400.
  • the layer and, optionally, the driving signal line Tx n 901 may be formed by the same photolithography process as the gate line 400.
  • the driving signal line Tx n 901 and the gate line 400 may also be in different layers, and the driving signal line Tx ii 901 and the gate line 400 are also It can be formed by different materials. Only one optional wiring method for driving the signal line Txii 901 is provided here, but it is not In addition, as shown in FIG.
  • each of the first driving signal line 901a and the second driving signal line 901b in the sub-pixel provided with the sensing electrode and the same in the same sub-pixel The gate lines 400 are arranged in parallel, and the first driving signal line 901a, the second driving signal line 901b, and the » line in the same sub-pixel are respectively disposed in the pixel electrode 300 in the same sub-pixel. The opposite sides.
  • the sensing signal line Rx n 902 is disposed in the same layer as the data line 500, and the sensing signal line Rx n 902 is in a different layer from the sensing electrode 700, and is located at the sensing electrode 700 and the Vias 802 on the insulating layer 801 between the sensing signal lines Rx n 902 are connected.
  • the pixel electrode 300 and the sensing electrode 700 are covered with a passivation layer 803.
  • the sensing signal line Rx n 902 in each sub-pixel provided with the sensing electrode is disposed in parallel with the data line 500 located in the same sub-pixel, and the sensing signal line Rx 11 902 is in the same sub-parameter
  • the data lines within the pixels are respectively disposed on opposite sides of the pixel electrode 300 within the same sub-pixel.
  • the sensing electrodes 700 of the touch unit may be disposed in each sub-pixel or may be disposed at intervals of several sub-pixels.
  • the pixel electrode 300 used as the driving electrode of the touch phase in the thousands of sub-pixels of the sensing electrode 700 the pixel electrodes 300 arranged in the same row are connected by the driving signal line Tx n 901, and the sensing of the same column arrangement
  • the electrode 700 is connected by an inductive signal line Rxn 902.
  • a further object of the present invention is to provide a touch display panel.
  • the touch display panel includes a color filter substrate 10 and a column substrate 20 provided by the present invention, and is disposed on the color filter substrate 10 and The liquid crystal layer 30 between the column substrates 20.
  • the touch display panel of the present invention can adopt the time division multiplexing technology, for example, the time of displaying one frame of the touch screen is 16.7 ms, and 4 ms is selected as the touch i interval, and the other 12.7 ms is displayed.
  • the duration of the two chips can be appropriately adjusted according to the processing capability of the IC chip, and is not specifically limited herein.
  • the gate lines Gate 1, Gate 2, ... Gate n are sequentially selected, and the gate lines Gate 1, Gate 2, .. Gate n are applied with the strobe signal, and the gate line Gate is used. 1.
  • the first thin film transistor 600 connected to the Gate 2, .. Gate n is sequentially turned on, and the pixel electrode 300 and the data line 500 in the sub-pixels of each row corresponding to the gate lines Gate 1, Gate 2., . Gate n ( The data lines are sequentially connected, and the display data signals are sequentially written on the pixel electrodes 300 in the sub-pixels of the respective rows via the data line 500 (Data line) to realize the display function;
  • the first driving signal lines Gate ⁇ , Gate 2 ′... Gate n ′ are sequentially selected, and the strobe signals are sequentially applied to the first driving signal lines Gate ⁇ and Gate Gate ⁇ ′, and
  • the second thin film transistor 800 connected to the driving signal line Gate', Gate 2', Gate n' is sequentially turned on, and the second driving signal lines Tx1, Tx2, ⁇ 3 ⁇ and the first driving signal line, respectively Gate ⁇ , Gate
  • a sensing capacitance is generated between the pixel electrode 300 and the sensing electrode 700, and a voltage signal that is coupled through the sensing capacitor by the touch sensing signal line Rxn 902 is detected.
  • the human body electric field acts on the sensing capacitor, so that the capacitance value of the sensing capacitor changes, thereby changing the voltage signal coupled by the touch sensing signal line Rri x 902, according to the change of the voltage signal. , you can determine the contact position.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal (AREA)
  • Position Input By Displaying (AREA)

Abstract

La présente invention concerne un substrat de matrice, un panneau d'affichage à commande tactile et un dispositif d'affichage. Le substrat de matrice comprend un substrat de fond (100) sur lequel sont formés une pluralité de sous pixels, chaque sous pixel étant pourvu d'une unité d'affichage et au moins plusieurs sous pixels étant pourvus d'unités de commande tactile ; l'unité d'affichage comprend : une électrode commune (200) ; une électrode de pixel (300) qui est isolée de l'électrode commune (200) et disposée sur une couche différente de celle de l'électrode commune ; des lignes de grille (400) et des lignes de données (500) qui sont disposées en se croisant sur le substrat de fond (100) ; et des premiers transistors à couches minces connectant les lignes de grille (400), les lignes de données (500) et l'électrode de pixel (300) ; chaque unité de commande tactile comprend une électrode de détection (700) qui est isolée de l'électrode de pixel (300) et agencée sur la même couche que celle de l'électrode de pixel ; et des lignes de signaux d'excitation (901) et des lignes de signaux de détection (902), qui sont disposées en se croisant, l'électrode de détection (700) étant connectée aux lignes de signaux de détection (902), l'électrode de pixel étant également connectée aux lignes de signaux d'excitation en tant qu'électrode d'excitation.Une électrode de pixel sur le substrat de matrice sert en même temps d'électrode d'excitation, tandis que l'électrode de pixel et l'électrode de détection sont disposées sur la même couche, ce qui peut simplifier des étapes de traitement et présente des avantages pour mener l'intégration de circuits intégrés.
PCT/CN2014/079449 2013-11-01 2014-06-09 Substrat de matrice, panneau d'affichage à commande tactile et dispositif d'affichage WO2015062274A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310535269.5 2013-11-01
CN201310535269.5A CN103529993B (zh) 2013-11-01 2013-11-01 阵列基板、触控显示面板及显示装置

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CN104866158B (zh) * 2015-06-18 2017-12-15 京东方科技集团股份有限公司 一种内嵌式触摸屏及显示装置
CN104932766B (zh) * 2015-07-14 2018-05-29 武汉华星光电技术有限公司 一种自容式触摸屏分时复用的方法
CN105139793A (zh) * 2015-08-28 2015-12-09 京东方科技集团股份有限公司 一种阵列基板、其驱动方法、显示面板及显示装置
CN105353903A (zh) * 2015-09-30 2016-02-24 信利光电股份有限公司 一种阵列基板、触控显示面板及触控显示装置
CN105487717A (zh) * 2016-01-19 2016-04-13 深圳市华星光电技术有限公司 触摸面板以及其制造方法
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US11835809B2 (en) 2015-05-27 2023-12-05 Semiconductor Energy Laboratory Co., Ltd. Touch panel

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