WO2015123912A1 - 一种内嵌式触摸屏及显示装置 - Google Patents

一种内嵌式触摸屏及显示装置 Download PDF

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Publication number
WO2015123912A1
WO2015123912A1 PCT/CN2014/074154 CN2014074154W WO2015123912A1 WO 2015123912 A1 WO2015123912 A1 WO 2015123912A1 CN 2014074154 W CN2014074154 W CN 2014074154W WO 2015123912 A1 WO2015123912 A1 WO 2015123912A1
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WO
WIPO (PCT)
Prior art keywords
electrodes
touch
sub
electrode
common
Prior art date
Application number
PCT/CN2014/074154
Other languages
English (en)
French (fr)
Inventor
刘英明
董学
王海生
丁小梁
杨盛际
Original Assignee
北京京东方光电科技有限公司
京东方科技集团股份有限公司
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Application filed by 北京京东方光电科技有限公司, 京东方科技集团股份有限公司 filed Critical 北京京东方光电科技有限公司
Priority to US14/435,935 priority Critical patent/US9645686B2/en
Priority to EP14859295.9A priority patent/EP3112995B1/en
Publication of WO2015123912A1 publication Critical patent/WO2015123912A1/zh

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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
    • G06F3/0416—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; 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
    • 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
    • G06F3/047—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using sets of wires, e.g. crossed wires
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0421—Structural details of the set of electrodes
    • G09G2300/0426—Layout of electrodes and connections
    • 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
    • G09G2310/08—Details of timing specific for flat panels, other than clock recovery
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • 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

Definitions

  • the Touch Screen Panel With the rapid development of display technology, the Touch Screen Panel has gradually spread throughout people's lives.
  • the touch screen can be divided into: an on-touch touch panel, an on-cell touch panel, and an in-cell touch panel (In Cell Touch Panel).
  • the external touch screen is produced by separately separating the touch screen from the liquid crystal display (LCD), and then being bonded together to become a liquid crystal display with touch function.
  • the external touch screen has high production cost and light transmittance. Low, thicker modules and other shortcomings.
  • the in-cell touch panel embeds the touch electrode of the touch screen inside the liquid crystal display, which can reduce the overall thickness of the module, and can greatly reduce the manufacturing cost of the touch screen, and is favored by various panel manufacturers.
  • liquid crystal display technology capable of realizing wide viewing angle mainly has an in-plane switch (IPS,
  • ADS technology generates electric field generated by the edge of the slit electrode in the same plane and between the slit electrode layer and the plate electrode layer.
  • the electric field forms a multi-dimensional electric field, so that all the aligned liquid crystal molecules between the slit electrodes in the liquid crystal cell and directly above the electrode can be rotated, thereby improving the liquid crystal working efficiency and increasing the light transmission efficiency.
  • Advanced super-dimensional field conversion technology can improve the picture quality of TF LCD products, with high resolution, high transmittance, low power consumption, wide viewing angle, high aperture ratio, low chromatic aberration, no squeeze water ripple (push
  • H-ADS High Open Rate Advanced Super Dimensional Field Switch
  • the in-cell touch panel structure proposed based on ADS technology and H ADS technology divides the common electrode layer connected to the entire surface of the array substrate to form mutual insulation and crossover.
  • the touch driving electrode and the common electrode are disposed, and the touch sensing electrodes corresponding to the area where the common electrode is located are disposed on the opposite substrate; the touch driving electrodes are time-divisionally driven to implement the touch function and the display function.
  • the embedded touch screen structure is configured to dispose the projection of the touch sensing electrode on the array substrate in a region where the common electrode is located, the common electrode and the touch driving electrode are insulated from each other in the same layer 1, thereby avoiding touch.
  • the facing area is generated between the sensing electrode and the touch driving electrode, which reduces the mutual capacitance formed by the facing area, thereby increasing the proportion of the mutual capacitance change caused by the finger touch, and improving the touch accuracy.
  • each common electrode 01 is a strip electrode
  • each touch driving electrode 02 is composed of a plurality of touch driving sub-electrodes 021 arranged in the same column, 022, 023, 024, and the touch driving sub-electrodes 021, 022, 023, 024 are located between the adjacent common electrodes 01, and the touch drivers of the same touch driving electrode 02 ii on both sides of the common electrode 01
  • the electrodes 021, 022, 023, and 024 are electrically connected through the touch driving signal line 03.
  • the common electrode signal needs to be simultaneously loaded to the common electrode 01 and the touch driving electrode 02, but since each touch driving electrode 02 is composed of a plurality of independent touch driving sub-electrodes 021, 022, 023, 024
  • the common electrode 01 is a strip electrode, and the signal transmission load of the two is inconsistent, which causes the transmission speed of the common signal at the common electrode 01 and the touch driving electrode 02 to be inconsistent, resulting in uneven display screen, affecting Picture quality.
  • an embodiment of the present invention provides an in-cell touch panel and a display device, wherein the touch driving electrode and the common electrode load are not-
  • an in-cell touch panel provided by the embodiment of the present invention includes: a column substrate having a common electrode layer; and a counter substrate opposite to the array substrate; the common electrode layer of the column substrate includes a matrix Arranging and mutually independent plurality of touch driving sub-electrodes and a plurality of common sub-electrodes, wherein the touch driving sub-electrodes and the common sub-electrodes are arranged at intervals in a row direction and a column direction of the matrix;
  • the array substrate has a plurality of touch driving signal lines and a plurality of common electrode signal lines;
  • the touch driving sub-electrodes located on the two sides of the common sub-electrode are electrically connected through the touch driving signal lines to form a touch driving electrode;
  • the common sub-electrodes located on both sides of the touch driving sub-electrode are electrically connected through the common electrode signal lines to form a common electrode; and the touch driving driving electrodes are time-divisionally loaded during the display time of one frame of the screen. a common electrode signal and a touch scan signal, and a common electrode signal is applied to each of the common electrodes;
  • the opposite substrate has a plurality of touch sensing electrodes that intersect the touch driving electrodes, and the orthographic projections of the touch sensing electrodes on the array substrate are located in a region where the common sub-electrodes are located.
  • the in-cell touch panel provided by the embodiment of the present invention divides the common electrode layer connected to the entire surface of the array substrate to form a plurality of touch driving sub-electrodes and a plurality of common sub-electrodes independently and spaced apart from each other through the touch
  • the driving signal line electrically connects the touch driving sub-electrodes in the row direction or the column direction to form a touch driving electrode, and electrically connects the common sub-electrodes in the row direction or the column direction through the common electrode signal line to form a common electrode;
  • a touch sensing electrode is disposed on the substrate, and the touch sensing electrodes are disposed on the array substrate in a region where the common electrode is located, and the touch driving electrodes are time-divisionally driven to achieve touch Control functions and display functions.
  • the touch driving electrode in the touch screen provided by the embodiment of the present invention is composed of a plurality of touch driving sub-electrodes, and the common electrode is also composed of a plurality of common sub-electrodes. Therefore, the signal transmission loads of the two are relatively close, in the display stage. The transmission speed of the common signal at the common electrode and the touch driving electrode is also relatively close, which can avoid the problem of uneven display picture and improve picture quality.
  • the touch driving signal line and the common electrode signal line extend in the same direction or perpendicular to each other.
  • each adjacent at least two touch driving electrodes are electrically connected to form a set of touch driving electrodes;
  • the two common electrodes are electrically connected to form a set of common electrodes.
  • the common sub-electrode occupies an area greater than or equal to the touch driving sub-electrode The area.
  • the opposite substrate has a black matrix disposed on the base substrate, and each of the touch sensing electrodes is located in the lining Between the base substrate and the black matrix, or above the black matrix.
  • each of the touch sensing electrodes includes a plurality of touch sensing sub-electrodes independently and electrically connected to each other.
  • the touch sensing sub-electrode has a grid-like structure, and the orthographic projection of the mesh-like structure of the touch sensing electrode on the opposite substrate is located in a region where the black matrix is located.
  • the touch sensing electrodes extend along a row direction of the matrix, and each touch of the touch sensing electrodes is formed.
  • the sensing sub-electrodes are distributed in at least two rows; or, the touch sensing electrodes extend along the column direction of the matrix, and the touch sensing sub-electrodes constituting one touch sensing electrode are distributed in at least two columns;
  • an area occupied by the touch sensing sub-electrode is smaller than an area occupied by the common sub-electrode.
  • the touch sensing electrodes extend along a row direction of the matrix, and each touch of the touch sensing electrodes is formed.
  • the sensing sub-electrodes are arranged in a row; or the touch sensing electrodes are arranged along a column direction of the matrix, and the touch sensing sub-electrodes constituting one of the touch sensing electrodes are arranged in a row;
  • Each of the touch sensing sub-electrodes constituting one of the touch sensing electrodes is electrically connected by a touch sensing signal line; an orthographic projection of the touch sensing signal line on the opposite substrate is located at the black matrix within the area.
  • a display device provided by an embodiment of the present invention includes the above provided by the embodiment of the present invention.
  • the in-cell touch screen is described.
  • FIG. 1 is a schematic structural view of a common electrode layer in an in-cell touch panel according to the prior art
  • FIG. 2 is a schematic structural view of an in-cell touch panel according to an embodiment of the present invention
  • FIG. 3a and FIG. 3b are embedded in an embodiment of the present invention
  • FIGS. 4a and 4b are schematic diagrams showing the positional relationship between a touch sensing electrode and a touch driving electrode in an in-cell touch panel according to an embodiment of the invention
  • 4c is a schematic diagram of a touch sensing electrode in an in-cell touch panel according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of driving timing of an in-cell touch panel according to an embodiment of the present invention.
  • FIG. 2 is a schematic cross-sectional view of an in-cell touch panel according to an embodiment of the present invention.
  • An in-cell touch panel provided by an embodiment of the present invention includes an array substrate 00 having a common electrode layer 110, and a counter substrate 200 opposed to the array substrate 100.
  • the common electrode layer 10 of the array substrate 100 includes a plurality of touch driving sub-electrodes 11 and a plurality of common sub-electrodes 112 arranged in a matrix and independent of each other, and the touch driving sub-electrode 11] And the common sub-electrodes 112 are arranged at intervals in the row direction and the column direction of the matrix.
  • the column substrate 100 has a plurality of touch driving signal lines 120 and a plurality of common electrode signals
  • the touch driving sub-electrodes 111 on both sides of the common sub-electrode 112 are electrically connected through the touch driving signal line 120 to form a touch driving electrode 140
  • the common sub-electrodes 112 on both sides of the touch driving sub-electrode 111 are electrically connected through the common electrode signal line 130 to form a common electrode 150.
  • the common electrode signal and the touch scan signal are time-divisionally loaded to the touch driving electrodes 140 during the display time of one frame, and the common electrode signals are loaded to the common electrodes 150.
  • the opposite substrate 200 has a plurality of touch sensing electrodes 210 that intersect with the touch driving electrodes 140.
  • the orthographic projections of the touch sensing electrodes 210 on the array substrate 100 are located at the common sub-electrode 112. In the area.
  • the in-cell touch panel provided by the embodiment of the present invention divides the common electrode layer connected to the entire surface of the array substrate to form a plurality of touch driving sub-electrodes and a plurality of common sub-electrodes independently and spaced apart from each other through the touch
  • the driving signal line electrically connects the touch driving sub-electrodes in the row direction or the column direction to form a touch driving electrode, and electrically connects the common sub-electrodes in the row direction or the column direction through the common electrode signal line to form a common electrode;
  • a touch sensing electrode is disposed on the substrate, and the touch sensing electrodes are disposed on the array substrate in a region where the common electrode is located, and the touch driving electrodes are time-divisionally driven to achieve touch Control functions and display functions.
  • the touch driving electrode in the touch screen provided by the embodiment of the present invention is composed of a plurality of touch driving sub-electrodes, and the common electrode is also composed of a plurality of common sub-electrodes. Therefore, the signal transmission loads of the two are relatively close, in the display stage. The transmission speed of the common signal at the common electrode and the touch driving electrode is also relatively close, which can avoid the problem of uneven display picture and improve picture quality.
  • the touch and display phases adopt a time-division driving manner, and on the one hand, the display driving and the touch driving chip can be integrated into one body to reduce the production cost;
  • the time drive can also reduce mutual interference between display and touch, and improve picture quality and touch accuracy.
  • the time of displaying each frame (V ⁇ syiic) of the touch screen is divided into a display period (Display) and a touch period (Tucli), for example, FIG.
  • the display time of the touch screen in the drive timing diagram is 16.7 ms, which is selected. 5 ms is taken as the touch time period, and the other 11 and 7 ms are used as the display time period.
  • the duration of the two chips can be appropriately adjusted according to the processing capability of the IC chip, and no limitation is imposed here.
  • a gate scan signal is sequentially applied to each of the cabinet signal lines Cartel, Gate2- «-Gate n in the touch screen, and a gray scale signal is applied to the data signal line Data, and accordingly the touch drive electrode is at this time
  • the TX is used as a common electrode
  • the IC chip connected to the touch driving electrode supplies a constant common electrode signal to realize a liquid crystal display function.
  • the IC chip connected to the touch driving electrode respectively provides the touch scanning signals T1, T2 to Tri to the touch driving electrodes, and the touch sensing electrodes respectively detect the touch sensing signals R1. , R2...! Ri, to achieve touch function.
  • each common electrode in the common electrode layer always loads the common electrode signal during the display period and the touch period, or applies a common electrode signal to each common electrode during the display period, and the common electrodes are grounded during the touch period. Or floating processing, which means no signal input.
  • the touch driving electrodes 140 in the touch screen of the embodiment of the present invention may extend along the row direction of the matrix.
  • the touch sensing electrodes 2 0 may extend along the column direction of the matrix; It is also possible to change the wiring direction of the two according to the size of the application device, that is, the touch driving electrodes 140 are arranged to extend along the column direction of the matrix, and the touch sensing electrodes 210 are arranged to extend along the row direction of the matrix. Make a limit.
  • each common electrode 150 in the touch screen may be consistent with the wiring direction of each touch driving electrode 140, and may also be associated with each touch sensing electrode.
  • the wiring direction is the same.
  • each common electrode 150 and the wiring direction of each touch driving electrode 140 are the same, as shown in FIG. 3a, the touch driving signal lines 120 connecting the touch driving sub-electrodes 111 and the common sub-electrodes 112 are connected.
  • the extending direction of the common electrode signal line 130 is the wiring direction of each common electrode 150 and the wiring direction of each touch sensing electrode 210.
  • the extending directions of the touch driving signal lines 120 connecting the touch driving sub-electrodes 111 and the common electrode signal lines 130 connecting the common sub-electrodes 112 are perpendicular to each other.
  • the number of the touch driving sub-electrodes 111 constituting each touch driving electrode 140 and the common sub-electrode 112 constituting each common electrode 150 are the same. Therefore, the signal transmission load of the touch driving electrode 140 and the common electrode 150 is relatively close. In the display phase, the transmission speed of the common signal at the common electrode 150 and the touch driving electrode 140 is relatively close, which can be better avoided. The problem of uneven display is displayed, and the picture quality is improved.
  • the touch driving signal lines 120 and the common electrode lines 130 when the touch driving signal lines 120 and the common electrode lines 130 are in the same direction, the touch driving signal lines 120 and the common electrode lines 130 may be disposed in the same layer as the gate signal lines in the array substrate;
  • the touch driving signal lines 120 are electrically connected to the corresponding touch driving sub-electrodes 111 through at least one via, and the common electrode signal lines 130 are electrically connected to the corresponding common sub-electrodes 112 through at least one via.
  • the touch driving signal line 20 made of metal is electrically connected to each of the touch driving electrodes 140, which is equivalent to the ITO electrode. And a plurality of metal resistors composed of the touch driving signal lines 120 are connected in parallel, so as to minimize the resistance of the touch driving electrodes 40, and improve the signal-to-noise ratio when the electrodes transmit signals.
  • the common electrode line 130 made of metal is electrically connected to each common electrode 150, it is equivalent to parallel connection of the ITO electrode and a plurality of metal resistors composed of the common electrode signal line 130, so that the common electrode 150 can be minimized. The resistance of the electrode, thereby increasing the signal-to-noise ratio when the electrode transmits a signal.
  • each adjacent one may be At least two (for example, three) touch driving electrodes 140 are electrically connected to form a set of touch driving electrodes; at least two adjacent each The strips (for example, three strips) of the common electrodes 150 are electrically connected to form a set of common electrodes, such that the common sub-electrodes 112 constituting a group of common electrodes and the touch driving sub-electrodes 111 constituting a set of touch driving electrodes are mixedly distributed. Then, when the common electrode and the touch driving electrode simultaneously load the common electrode signal, the image unevenness caused by the signal delay will not be
  • the shapes of the common sub-electrodes 112 and the touch driving sub-electrodes 111 may be set to be uniform, generally being a quadrangle as shown in FIG. 3a and FIG. 3b, and of course, according to actual conditions. It needs to be designed as other graphics, which is not limited here.
  • the area occupied by the common sub-electrode 112 may be set to be greater than or equal to the area occupied by the touch driving sub-electrode 111, and the area occupied by the common sub-electrode 112 is slightly larger than the touch driving.
  • the size of the area occupied by the touch sensing electrode 2 0 in the area where the common sub-electrode 1 is located may be set to be slightly smaller than the area where the common sub-electrode 112 is located, so that the touch sensing is performed.
  • the driving sub-electrode 111 has a certain gap between the orthographic projections on the array substrate, which can effectively increase the edge capacitance between the touch driving electrode 140 and the touch sensing electrode 2, 0, thereby reducing the positive capacitance of the two. Proportion to increase touch sensitivity.
  • the opposite substrate 200 generally has a black matrix disposed on the base substrate, and the touch sensing electrode 210 may be located between the base substrate of the lining and the black matrix, or It is located above the black matrix and is not limited here.
  • FIG. 4a And FIG. 4b shows the orthographic projection of the touch sensing electrode 210 on the array substrate 100.
  • Each of the touch sensing electrodes 210 is also composed of a plurality of touch sensing sub-electrodes 211 that are electrically connected independently of each other. 4a and FIG. 4b, each of the touch sensing sub-electrodes 21 constituting the touch sensing electrode 210 occludes a common sub-electrode 12 below.
  • each of the touch sensing sub-electrodes 2i i is generally configured to have a grid structure, and the grid of the touch sensing electrodes 2i i
  • the orthographic projection on the opposite substrate 200 is located at the black moment In the area where the array is located.
  • the black matrix can be used to cover the mesh structure of the touch sensing sub-electrode 211 without affecting the aperture ratio of the display or affecting the light transmittance of the display.
  • the mesh size of the grid-like structure of each of the touch sensing sub-electrodes 211 can be determined according to the needs of the device.
  • the pattern of the touch sensing sub-electrodes 211 can be set to be located in each sub-pixel unit constituting the pixel unit ( The pattern of the touch sensing sub-electrode 211 may also be disposed at a gap between the pixel units, which is not limited herein.
  • the material of the touch sensing electrode 210 may be specifically a transparent conductive oxide such as ITO or IZO. It can also be a metal, and when the touch sensing electrode 210 is made of metal, the resistance can be effectively reduced.
  • the width of each of the touch sensing electrodes may be set according to the width of the touch driving electrodes. Specifically, when the touch sensing electrodes 210 extend along the row direction of the matrix, and form a touch sensing electrode 210 Each of the touch sensing sub-electrodes 211 are distributed in a row; or, as shown in FIG.
  • the touch sensing electrodes 210 extend along the column direction of the matrix, and each touch sensing sub-electrode 211 constituting one touch sensing electrode 210
  • the touch sensing sub-electrodes 211 constituting one touch sensing electrode 210 are electrically connected to each other through the touch sensing signal line 220; the orthographic projection of the touch sensing signal line 220 on the opposite substrate 200 is black.
  • the orthographic projection of the touch sensing signal line 220 on the opposite substrate 200 is black.
  • the touch sensing electrodes 210 are generally composed of a plurality of rows or columns of touch sensing sub-electrodes 21], each touch The driving sub-electrodes 211 can be connected through the mesh connecting portion 212, that is, the metal mesh, so that the setting of the touch sensing signal lines can be omitted.
  • touch sensing electrodes extend along the row direction of the matrix, and the touch sensing sub-electrodes constituting one touch sensing electrode are distributed in at least two rows; or, as shown in FIG. 4b, when the touch sensing electrodes are Extending along the column direction of the matrix, when the touch sensing sub-electrodes constituting one touch sensing electrode are distributed in at least two columns, forming a touch sensing electrode
  • the two adjacent touch sensing sub-electrodes 211 are electrically connected to each other through the mesh connecting portion 212.
  • a schematic diagram of a touch sensing electrode 2i0 is shown in FIG. 4c. It is ensured that the aperture ratio of the display is not affected.
  • the orthographic projection of the grid connection portion 212 on the opposite substrate 200 is also located in the area where the black matrix is located. As shown in FIG. 4d, the A and C regions are touch sensing.
  • the sub-electrode 211, the B region is the mesh connecting portion 212, and the black region is a black matrix pattern.
  • each touch sensing sub-electrode 211 can be set to be smaller than the area occupied by the common sub-electrode 112.
  • the grid connecting portion 212 can be set as possible and common.
  • the area corresponding to the sub-electrode 112 avoids the generation of a positive capacitance between the mesh connecting portion 212 and the touch driving electrode 140, thereby affecting the touch precision; on the other hand, the touch sensing electrode 210 and the touch driving sub-electrode 111 may be There is a certain gap between the orthographic projections on the array substrate, which effectively increases the edge capacitance between the touch driving electrode 140 and the touch sensing electrode 210, thereby reducing the proportion of the positive capacitance of the two layers and improving the touch sensitivity.
  • an embodiment of the present invention further provides a display device, including the above-mentioned embedded touch screen provided by the embodiment of the present invention, which may be: a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital device. Any product or component that has a display function, such as a photo frame or a navigator.
  • a display device including the above-mentioned embedded touch screen provided by the embodiment of the present invention, which may be: a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital device. Any product or component that has a display function, such as a photo frame or a navigator.
  • the display device reference may be made to the above embodiment of the in-cell touch panel, and the repeated description is omitted.
  • the in-cell touch panel and the display device provided by the embodiment of the present invention divide the common electrode layer connected to the entire surface of the array substrate to form a plurality of touch driving sub-electrodes and a plurality of common sub-electrodes that are independently and spaced apart from each other.
  • the touch driving driving electrodes are electrically connected to each other in the row direction or the column direction to form a touch driving electrode, and the common sub-electrodes in the row direction or the column direction are electrically connected through the common electrode signal line to form a common electrode.
  • the touch driving electrode in the touch screen provided by the embodiment of the invention is composed of a plurality of touch driving sub-electrodes, and the common electrode is also composed of a plurality of common sub-electrodes. Therefore, the signal transmission loads of the two are relatively close, in the display stage. The transmission speed of the common signal at the common electrode and the touch driving electrode is also relatively close, which can avoid the problem of uneven display picture and improve picture quality.

Abstract

一种内嵌式触摸屏及显示装置，将阵列基板中整面连接的公共电极层进行分割，形成相互独立且间隔排列的多个触控驱动子电极（111）和多个公共子电极（112），通过触控驱动信号线将触控驱动子电极电性相连形成一触控驱动电极（140），通过公共电极信号线公共子电极电性相连形成一公共电极（150）；在对向基板上设置与触控驱动电极交叉而置的触控感应电极，对触控驱动电极进行分时驱动，以实现触控功能和显示功能。由于触摸屏内的触控驱动电极是由多个触控驱动子电极组成，公共电极也是由多个公共子电极组成，因此，两者的信号传输负载相对接近，在显示阶段公共信号在公共电极和触控驱动电极的传输速度也相对接近，可以避免显示画面不均匀的问题，改善画面品质。

Description

随着显示技术的飞速发展， 触摸屏 （Touch Screen Panel) 已经逐 渐遍及人们的生活中。 目前， 触摸屏按照组成结构可以分为： 外挂式 触摸屏（Add on Mode Touch Panel)、覆盖表面式触摸屏（On Cell Touch Panel), 以及内嵌式触摸屏（In Cell Touch Panel )。其中， 外挂式触摸 屏是将触摸屏与液晶显示屏（Liquid Crystal Display, LCD)分开生产， 然后贴合到一起成为具有触摸功能的液晶显示屏，外挂式触摸屏存在 制作成本较高、 光透过率较低、 模组较厚等缺点。 而内嵌式触摸屏将 触摸屏的触控电极内嵌在液晶显示屏内部， 可以减薄模组整体的厚 度， 又可以大大降低触摸屏的制作成本， 受到各大面板厂家青睐。
目前， 能够实现宽视角的液晶显示技术主要有平面内开关（IPS，
In-Plane Switch ) 技术和高级超维场开关 （ADS , Advanced Super Dimension Switch) 技术； 其中， ADS技术通过同一平面内狭缝电极 边缘所产生的电场以及狭缝电极层与板状电极层间产生的电场形成 多维电场， 使液晶盒内狭缝电极间、 电极正上方所有取向液晶分子都 能够产生旋转， 从而提高了液晶工作效率并增大了透光效率。高级超 维场转换技术可以提高 TF LCD产品的画面品质， 具有高分辨率、 高透过率、低功耗、宽视角、高开口率、低色差、无挤压水波紋（push
Mura)等优点。 H- ADS (高开口率高级超维场开关）是 ADS技术的 一种重要实现方式。
目前基于 ADS技术和 H ADS技术提出的内嵌式触摸屏结构是将 阵列基板中整面连接的公共电极层进行分割，形成相互绝缘且交叉而 置的触控驱动电极和公共电极，并在对向基板上设置与公共电极所在 区域对应的触控感应电极； 对触控驱动电极进行分时驱动， 以实现触 控功能和显示功能。由于这种内嵌式触摸屏结构是将触控感应电极在 阵列基板上的投影设置在公共电极所在的区域内，而公共电极和触控 驱动电极位于同层 1相互绝缘， 这样， 避免了触控感应电极与触控驱 动电极之间产生正对面积， 减少了由该正对面积形成的互电容， 从而 增加由手指触控导致的互电容变化量的比例， 提升了触控准确性。
上述内嵌式触摸屏结构中，公共电极层分割后的示意图如图 1所 示， 各公共电极 01为条状电极； 每个触控驱动电极 02由多个同列设 置的触控驱动子电极 021、 022、 023、 024组成， 且各触控驱动子电 极 021、 022、 023、 024位于相邻的公共电极 01之间， 属于同一触控 驱动电极 02 ii位于公共电极 01两侧的触控驱动子电极 021、 022、 023、 024通过触控驱动信号线 03电性相连。 在实现显示功能时， 需 要向公共电极 01和触控驱动电极 02同时加载公共电极信号，但是由 于每条触控驱动电极 02是由独立的多个触控驱动子电极 021、 022、 023、 024组成的， 而公共电极 01是条状电极， 两者的信号传输负载 (loading) 不一致， 这会导致公共信号在公共电极 01和触控驱动电 极 02的传输速度不一致， 造成显示画面不均匀， 影响画面品质。
有鉴于此， 本发明实施例提供了一种内嵌式触摸屏及显示装置， 中触控驱动电极和公共电极负载不 -
Figure imgf000004_0001
因此， 本发明实施例提供的一种内嵌式触摸屏， 包括： 具有公共 电极层的 列基板， 以及与所述阵列基板相对而置的对向基板； 所述 列基板的公共电极层包括呈矩阵排列且相互独立的多个 触控驱动子电极和多个公共子电极，所述触控驱动子电极和所述公共 子电极在矩阵的行方向和列方向均间隔排列；
所述阵列基板具有多条触控驱动信号线和多条公共电极信号线； 在矩阵的行方向或列方向，位于所述公共子电极两侧的触控驱动子电 极通过所述触控驱动信号线电性相连， 组成一触控驱动电极； 在矩阵 的行方向或列方向，位于所述触控驱动子电极两侧的公共子电极通过 公共电极信号线电性相连， 组成一公共电极； 在一帧画面的显示时间 内， 对各所述触控驱动电极分时地加载公共电极信号和触控扫描信 号， 对各所述公共电极加载公共电极信号；
所述对向基板具有多条与所述触控驱动电极交叉而置的触控感 应电极，各所述触控感应电极在所述阵列基板的正投影位于所述公共 子电极所在区域内。
本发明实施例提供的上述内嵌式触摸屏，将阵列基板中整面连接 的公共电极层进行分割，形成相互独立且间隔排列的多个触控驱动子 电极和多个公共子电极，通过触控驱动信号线将行方向或列方向的触 控驱动子电极电性相连形成一触控驱动电极，通过公共电极信号线将 行方向或列方向的公共子电极电性相连形成一公共电极；在对向基板 上设置与触控驱动电极交叉而置的触控感应电极，各触控感应电极在 阵列基板上的投影位于公共电极所在的区域内，对触控驱动电极进行 分时驱动， 以实现触控功能和显示功能。 由于本发明实施例提供的触 摸屏内的触控驱动电极是由多个触控驱动子电极组成，公共电极也是 由多个公共子电极组成， 因此， 两者的信号传输负载相对接近， 在显 示阶段公共信号在公共电极和触控驱动电极的传输速度也相对接近， 可以避免显示画面不均匀的问题， 改善画面品质。
在一种可能的实现方式中，在本发明实施例提供的上述内嵌式触 摸屏中，所述触控驱动信号线和所述公共电极信号线的延伸方向一致 或相互垂直。
在一种可能的实现方式中，在本发明实施例提供的上述内嵌式触 摸屏中，每相邻的至少两条触控驱动电极电性相连组成一组触控驱动 电极； 每相邻的至少两条公共电极电性相连组成一组公共电极。
在一种可能的实现方式中，在本发明实施例提供的上述内嵌式触 摸屏中，所述公共子电极所占面积大于或等于所述触控驱动子电极所 占面积。
在一种可能的实现方式中，在本发明实施例提供的上述内嵌式触 摸屏中， 所述对向基板具有设置在衬底基板上的黑矩阵， 各所述触控 感应电极位于所述衬底基板与黑矩阵之间， 或位于所述黑矩阵之上。
在一种可能的实现方式中，在本发明实施例提供的上述内嵌式触 摸屏中，每条所述触控感应电极包括多个相互独立且电性相连的触控 感应子电极， 各所述触控感应子电极具有网格状结构， 且所述触控感 应电极的网袼状结构在所述对向基板上的正投影位于所述黑矩阵所 在区域内。
在一种可能的实现方式中，在本发明实施例提供的上述内嵌式触 摸屏中， 所述触控感应电极沿着矩阵的行方向延伸， 且组成一条所述 触控感应电极的各触控感应子电极分布于至少两行； 或， 所述触控感 应电极沿着矩阵的列方向延伸，且组成一条所述触控感应电极的各触 控感应子电极分布于至少两列；
组成一条所述触控感应电极的相邻两个所述触控感应子电极之 间通过网格连接部电性相连；所述网格连接部在所述对向基板上的正 投影位于所述黑矩阵所在区域内。
在一种可能的实现方式中，在本发明实施例提供的上述内嵌式触 摸屏中，所述触控感应子电极所占区域的面积小于所述公共子电极所 占面积。
在一种可能的实现方式中，在本发明实施例提供的上述内嵌式触 摸屏中， 所述触控感应电极沿着矩阵的行方向延伸， 且组成一条所述 触控感应电极的各触控感应子电极分布于一行； 或， 所述触控感应电 极沿着矩阵的列方向延伸，且组成一条所述触控感应电极的各触控感 应子电极分布于一列；
组成一条所述触控感应电极的各所述触控感应子电极通过触控 感应信号线电性相连；所述触控感应信号线在所述对向基板上的正投 影位于所述黑矩阵所在区域内。
本发明实施例提供的一种显示装置，包括本发明实施例提供的上 述内嵌式触摸屏。
图 1为现有技术中内嵌式触摸屏中公共电极层的结构示意图； 图 2为本发明实施例提供的内嵌式触摸屏的结构示意图； 图 3a和图 3b为本发明实施例提供的内嵌式触摸屏中阵列基板侧 的结构示意图；
图 4a和图 4b为本发明实施例提供的内嵌式触摸屏中触控感应电 极与触控驱动电极位置关系的示意图；
图 4c为本发明实施例提供的内嵌式触摸屏中的触控感应电极的 示意图；
图 4d为本发明实施例提供的内嵌式触摸屏中触控感应电极的局 图 5为本发明实施例提供的内嵌式触摸屏的驱动时序示意图。
下面结合 i†图，对本发明实施例提供的内嵌式触摸屏及显示装置 的具体实施方式进行详细地说明。
图中各层膜层的厚度和形状不反映真实比例， 目的只是示意说 明本发明内容。
图 2为本发明实施例提供的内嵌式触摸屏的横向剖面示意图。本 发明实施例提供的一种内嵌式触摸屏， 如图 2所示， 包括具有公共电 极层 110的阵列基板】00， 以及与阵列基板 100相对而置的对向基板 200。
如图 3a或图 3b所示， 阵列基板 100的公共电极层 1 0包括呈矩 阵排列且相互独立的多个触控驱动子电极 1 1 和多个公共子电极 112， 触控驱动子电极 11】 和公共子电极 112在矩阵的行方向和列方 向均间隔排列。
列基板 100具有多条触控驱动信号线 120和多条公共电极信号 线 130; 在矩阵的行方向或列方向， 位于公共子电极 112两侧的触控 驱动子电极 111通过触控驱动信号线 120电性相连，组成一触控驱动 电极 140; 在矩阵的行方向或列方向， 位于触控驱动子电极 111两侧 的公共子电极 112通过公共电极信号线 130电性相连，组成一公共电 极 150。 在一帧画面的显示时间内， 对各触控驱动电极 140分时地加 载公共电极信号和触控扫描信号，对各公共电极 150加载公共电极信 号。
如图 4a和图 4b所示， 对向基板 200具有多条与触控驱动电极 140交叉而置的触控感应电极 210， 各触控感应电极 210在阵列基板 100的正投影位于公共子电极 112所在区域内。
本发明实施例提供的上述内嵌式触摸屏，将阵列基板中整面连接 的公共电极层进行分割，形成相互独立且间隔排列的多个触控驱动子 电极和多个公共子电极，通过触控驱动信号线将行方向或列方向的触 控驱动子电极电性相连形成一触控驱动电极，通过公共电极信号线将 行方向或列方向的公共子电极电性相连形成一公共电极；在对向基板 上设置与触控驱动电极交叉而置的触控感应电极，各触控感应电极在 阵列基板上的投影位于公共电极所在的区域内，对触控驱动电极进行 分时驱动， 以实现触控功能和显示功能。 由于本发明实施例提供的触 摸屏内的触控驱动电极是由多个触控驱动子电极组成，公共电极也是 由多个公共子电极组成， 因此， 两者的信号传输负载相对接近， 在显 示阶段公共信号在公共电极和触控驱动电极的传输速度也相对接近， 可以避免显示画面不均匀的问题， 改善画面品质。
并旦， 由于本发明实施例提供的上述触摸屏中， 触控和显示阶段 采用分时驱动的方式，一方面可以将显示驱动和触控驱动的芯片整合 为一体， 降低生产成本； 另一方面分时驱动也能够降低显示和触控的 相互干扰， 提高画面品质和触控准确性。
具体地， 例如： 如图 5所示的驱动时序图中， 将触摸屏显示每一 帧（ V~syiic)的时间分成显示时间段（Display)和触控时间段（T ucli)， 例如图 5所示的驱动时序图中触摸屏的显示一帧的时间为 16.7ms，选 取其中 5ms作为触控时间段， 其他的 11,7ms作为显示时间段， 当然 也可以根据 IC芯片的处理能力适当的调整两者的时长， 在此不做具 悻限定。 在显示时间段 （Display) , 对触摸屏中的每条櫥极信号线 Gatel , Gate2-« -Gate n 依次施加栅扫描信号， 对数据信号线 Data 施加灰阶信号， 相应地此时触控驱动电极 TX作为公共电极， 与触控 驱动电极连接的 IC芯片向其提供恒定的公共电极信号， 实现液晶显 示功能。 在触控时间段 （Touch) , 与触控驱动电极连接的 IC芯片向 各触控驱动电极分别提供触控扫描信号 Tl、 T2 〜Tri， 同时各触控 感应电极分别侦测触控感应信号 Rl、 R2……！ri， 实现触控功能。 在 触控时间段， 触摸屏中的每条栅极信号线和数据信号线无信号输入。 并且，在公共电极层中的各公共电极在显示时间段和触控时间段始终 加载公共电极信号， 或者， 在显示时间段向各公共电极加载公共电极 信号， 在触控时间段各公共电极接地或者悬空处理， 该悬空处理指无 信号输入。
在具体实施时，本发明实施例提供的上述触摸屏中的各触控驱动 电极 140可沿着矩阵的行方向延伸， 对应地， 触控感应电极 2】0可以 沿着矩阵的列方向延伸； 当然也可以根据应用器件的尺寸， 变更两者 的布线方向， 即将触控驱动电极 140设置为沿着矩阵的列方向延伸， 各触控感应电极 210设置为沿着矩阵的行方向延伸， 在此不做限定。
下面都是以各触控驱动电极 140沿着矩阵的行方向延伸，各触控 感应电极 210沿着矩阵的列方向延伸为例进行说明。
并 ϋ， 在具体实施时， 本发明实施例提供的上述触摸屏中的各公 共电极 150的布线方向可以和各触控驱动电极 140的布线方向一致， 也可以和各触控感应电极 2】0的布线方向一致。
当各公共电极 150的布线方向和各触控驱动电极 140的布线方向 一致时， 如图 3a所示， 连接各触控驱动子电极 111 的触控驱动信号 线 120和连接各公共子电极 112的公共电极信号线 130的延伸方向一 当各公共电极 150的布线方向和各触控感应电极 210的布线方向 一致时， 如图 3b所示， 连接各触控驱动子电极 111的触控驱动信号 线 120和连接各公共子电极 112的公共电极信号线 130的延伸方向相 互垂直。
当触控驱动信号线 120和公共电极信号线 130 的延伸方向一致 时，组成每条触控驱动电极 140的触控驱动子电极 111和组成每条公 共电极 150 的公共子电极 112 的个数相同， 因此， 在触控驱动电极 140和公共电极 150的信号传输负载相对也更接近， 在显示阶段公共 信号在公共电极 150和触控驱动电极 140的传输速度也相对更接近， 可以更好的避免显示画面不均匀的问题， 改善画面品质。
在具体实施时，在各触控驱动信号线 120和公共电极线 130延伸 方向一致时，可以将各触控驱动信号线 120和公共电极线 130与阵列 基板中的栅极信号线同层设置；各触控驱动信号线 120通过至少一个 过孔与对应的各触控驱动子电极 111 电性相连， 各公共电极信号线 130通过至少一个过孔与对应的各公共子电极 112电性相连。 这样， 在制备阵列基板时不需要增加额外的制备工序，只需要通过一次构图 工艺即可形成触控驱动信号线 120、 公共电极信号线 130和 »极信号 线的图形， 能够节省制备成本， 提升产品附加值。
进一步地， 由于公共电极层一般由 ΠΌ材料制成， 而 ITO材料 的电阻较高， 由金属制备的触控驱动信号线 】20 与各触控驱动电极 140电性相连后，相当于将 ITO电极和多个由触控驱动信号线 120组 成的金属电阻并联， 这样能最大限度的减少触控驱动电极 】40 的电 阻， 丛而提高电极传递信号时的信噪比。 同理， 由金属制备的公共电 极线 130与各公共电极 150电性相连后，相当于将 ITO电极和多个由 公共电极信号线 130组成的金属电阻并联，这样能最大限度的减少公 共电极 150的电阻， 从而提高电极传递信号时的信噪比。
进一步地， 为了在显示阶段更有效的改善显示效果， 减少触控驱 动电极和公共电极之间由于公共电极信号传输速度不一致带来的画 面不均匀问题，在具体实施时，可以将每相邻的至少两条（例如三条） 触控驱动电极 140电性相连组成一组触控驱动电极；每相邻的至少两 条（例如三条） 公共电极 150电性相连组成一组公共电极， 这样， 组 成一组公共电极的各公共子电极 112 和组成一组触控驱动电极的各 触控驱动子电极 111是混合分布的，那么在公共电极和触控驱动电极 同时加载公共电极信号时，信号延迟带来的画面不均匀现象就不会那
5 么明显。
进一步地， 为了便于分割公共电极层 110 可以将各公共子电极 112 和各触控驱动子电极 111 的形状设置为一致， 一般都为如图 3a 和图 3b所示的四边形， 当然也可以根据实际需要设计为其他图形， 在此不做限定。
t o 并 1, 在具侔实施时， 可以将公共子电极 112所占面积设置为大 于或等于触控驱动子电极 111所占面积， 当将公共子电极 112所占面 积设置为稍大于触控驱动子电极 111所占面积时，可以将正投影位于 公共子电极 1 2所在区域内的触控感应电极 2】0所占区域的大小设置 为略小于公共子电极 112所在区域，这样在触控感应电极 210和触控
15 驱动子电极 111在阵列基板上的正投影之间具有一定的缝隙，可以有 效增加触控驱动电极 140和触控感应电极 2】0之间的边缘电容，从而 降低两者的正对电容所占比例， 提高触控灵敏度。
在具体实施时， 在本发明实施例提供的触摸屏中， 对向基板 200 一般具有设置在衬底基板上的黑矩阵，触控感应电极 210可以位于衬 0 底基板与黑矩阵之间， 也可以位于黑矩阵之上， 在此不做限定。
并旦， 由于各条触控感应电极 210在阵列基板 100的正投影位于 公共子电极】 12所在区域内，而触控驱动子电极 111和公共子电极】12 是间隔排列的， 因此， 图 4a和图 4b示出了触控感应电极 210在阵列 基板 100上的正投影，各条触控感应电极 210也是由多个相互独立且 5 电性相连的触控感应子电极 211组成的，在图 4a和图 4b中组成触控 感应电极 210的各触控感应子电极 21】遮挡了位于其下方的公共子电 极】 12。 并 ϋ， 为了保证各触控感应子电极 211不会影响各像素单元 的开口率， 一般将各触控感应子电极 2i i设置为具有网格状结构， 且 触控感应电极 2i i的网格状结构在对向基板 200上的正投影位于黑矩 阵所在区域内。这样， 就可以利用黑矩阵遮盖触控感应子电极 211的 网袼状结构， 不会对显示器的开口率产生影响， 也不会影响显示器的 光透过率。 具钵地， 各触控感应子电极 211的网格状结构的网孔大小 可以依据具悻需要确定， 例如， 触控感应子电极 211的图案可以设置 为位于组成像素单元的各亚像素单元（RGB )之间的间隙处， 触控感 应子电极 211的图案也可以设置为仅位于像素单元之间的间隙处，在 此不做限定。
进一步地， 由于在对向基板 200上设置的网格状结构的触控感应 子电极 211不会遮挡像素单元， 因此， 触控感应电极 210的材料可以 具体为透明导电氧化物例如 ITO或 IZO， 也可以为金属， 当采用金属 制作触控感应电极 210时可以有效的降低其电阻。
在具体实施时，每条触控感应电极的宽度可以根据触控驱动电极 的宽度进行设定， 具体地， 当触控感应电极 210沿着矩阵的行方向延 伸，且组成一条触控感应电极 210的各触控感应子电极 211分布于一 行； 或， 如图 4a所示， 当触控感应电极 210沿着矩阵的列方向延伸， 且组成一条触控感应电极 210 的各触控感应子电极 211 分布于一列 时，可以将组成一条触控感应电极 210的各触控感应子电极 211通过 触控感应信号线 220电性相连； 触控感应信号线 220在对向基板 200 上的正投影位于黑矩阵所在区域内。
当每相邻的至少两条触控驱动电极 140 电性相连组成一组触控 驱动电极时，触控感应电极 210—般由多行或多列触控感应子电极组 成 21】， 各触控驱动子电极 211之间可以通过网格连接部 212， 即金 属网格连接， 这样可以省去触控感应信号线的设置。
具体地， 当触控感应电极沿着矩阵的行方向延伸， 且组成一条触 控感应电极的各触控感应子电极分布于至少两行时； 或， 如图 4b所 示， 当触控感应电极沿着矩阵的列方向延伸， 旦组成一条触控感应电 极的各触控感应子电极分布于至少两列时， 组成一条触控感应电极
210的相邻两个触控感应子电极 211之间通过网格连接部 212电性相 连， 其中， 一条触控感应电极 2i0的示意图如图 4c所示； 并—巨.， 为 了保证不会对显示器的开口率产生影响，该网格连接部 212在对向基 板 200上的正投影也位于黑矩阵所在区域内， 如图 4d所示， A和 C 区域均为触控感应子电极 211， B区域为网格连接部 212， 黑色区域 为黑矩阵的图形。
进一步地， 在具体实施时， 可以将各触控感应子电极 211所占区 域的面积设置为小于公共子电极 112所占面积， 这样， 一方面便于将 网格连接部 212尽可能设置在与公共子电极 112对应的区域，尽量避 免网格连接部 212与触控驱动电极 140之间产生正对电容，而影响触 控精度；另一方面可以在触控感应电极 210和触控驱动子电极 111在 阵列基板上的正投影之间具有一定的缝隙， 有效增加触控驱动电极 140和触控感应电极 210之间的边缘电容， 从而降低两者的正对电容 所占比例， 提高触控灵敏度。
基于同一发明构思， 本发明实施例还提供了一种显示装置， 包括 本发明实施例提供的上述内嵌式触摸屏， 该显示装置可以为： 手机、 平板电脑、 电视机、 显示器、 笔记本电脑、 数码相框、 导航仪等任何 具有显示功能的产品或部件。该显示装置的实施可以参见上述内嵌式 触摸屏的实施例， 重复之处不再赘述。
本发明实施例提供的上述内嵌式触摸屏及显示装置，将阵列基板 中整面连接的公共电极层进行分割，形成相互独立且间隔排列的多个 触控驱动子电极和多个公共子电极，通过触控驱动信号线将行方向或 列方向的触控驱动子电极电性相连形成一触控驱动电极，通过公共电 极信号线将行方向或列方向的公共子电极电性相连形成一公共电极； 在对向基板上设置与触控驱动电极交叉而置的触控感应电极，各触控 感应电极在阵列基板上的投影位于公共电极所在的区域内，对触控驱 动电极进行分时驱动， 以实现触控功能和显示功能。 由于本发明实施 例提供的触摸屏内的触控驱动电极是由多个触控驱动子电极组成，公 共电极也是由多个公共子电极组成， 因此， 两者的信号传输负载相对 接近，在显示阶段公共信号在公共电极和触控驱动电极的传输速度也 相对接近， 可以避免显示画面不均匀的问题， 改善画面品质。 显然，本领域的技术人员可以对本发明进行各种改动和变型而不 脱离本发明的精神和范围。这样， 倘若本发明的这些修改和变型属于 本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些 改动和变型在内。

Claims

1、 一种内嵌式触摸屏， 包括： 具有公共电极层的 列基板， 以及与所述 列基板相对而置的对向基板， 其特征在于；
所述阵列基板的公共电极层包括呈矩阵排列且相互独立的多个触控驱动 子电极和多个公共子电极， 所述触控驱动子电极和所述公共子电极在矩阵的 行方向和列方向均间隔排列；
所述阵列基板具有多条触控驱动信号线和多条公共电极信号线； 在矩阵 的行方向或列方向， 位于所述公共子电极两侧的触控驱动子电极通过所述触 控驱动信号线电性相连， 组成一触控驱动电极； 在矩阵的行方向或列方向， 位于所述触控驱动子电极两侧的公共子电极通过公共电极信号线电性相连， 组成一公共电极；
所述对向基板具有多条与所述触控驱动电极交叉而置的触控感应电极， 各所述触控感应电极在所述阵列基板的正投影位于所述公共子电极所在区域 内。
2、 如权利要求 1所述的触摸屏， 其特征在于， 所述触控驱动信号线和所 述公共电极信号线的延伸方向一致或相互垂直。
3、 如权利要求 1或 2所述的触摸屏， 其特征在于， 每相邻的至少两条触 控驱动电极电性相连组成一组触控驱动电极； 每相邻的至少两条公共电极电 性相连组成一组公共电极。
4、 如权利要求 1 -3中任一项所述的触摸屏， 其特征在于， 所述公共子电 极所占面积大于或等于所述触控驱动子电极所占面积。
5、 如权利要求 1 -4任一项所述的触摸屏， 其特征在于， 所述对向基板具 有设置在衬底基板上的黑矩阵， 各所述触控感应电极位于所述衬底基板与黑 矩阵之间， 或位于所述黑矩阵之上。
6、 如权利要求 5所述的触摸屏， 其特征在于， 每条所述触控感应电极包 括多个相互独立 ή电性相连的触控感应子电极， 各所述触控感应子电极具有 网格状结构， 且所述触控感应电极的网格状结构在所述对向基板上的正投影 位于所述黑矩阵所在区域内。 Ί、 如权利要求 6所述的触摸屏， 其特征在于， 所述触控感应电极沿着矩 的行方向延伸， 且组成一条所述触控感应电极的各触控感应子电极分布于 至少两行； 或， 所述触控感应电极沿着矩阵的列方向延伸， 且组成一条所述 触控感应电极的各触控感应子电极分布于至少两列；
组成一条所述触控感应电极的相邻两个所述触控感应子电极之间通过网 格连接部电性相连； 所述网格连接部在所述对向基板上的正投影位于所述黑 矩阵所在区域内。
8、 如权利要求 7所述的触摸屏， 其特征在于， 所述触控感应子电极所占 区域的面积小于所述公共子电极所占面积。
9、 如权利要求 6所述的触摸屏， 其特征在于， 所述触控感应电极沿着矩 阵的行方向延伸， 且组成一条所述触控感应电极的各触控感应子电极分布于 一行； 或， 所述触控感应电极沿着矩阵的列方向延伸， 且组成一条所述触控 感应电极的各触控感应子电极分布于一列；
组成一条所述触控感应电极的各所述触控感应子电极通过触控感应信号 线电性相连； 所述触控感应信号线在所述对向基板上的正投影位于所述黑矩 阵所在区域内。
10、 一种显示装置， 其特征在于， 包括如权利要求 1-9任一项所述的内 嵌式触摸屏。
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