WO2020020027A1 - 触控模组、触控显示基板和触控显示装置 - Google Patents

触控模组、触控显示基板和触控显示装置 Download PDF

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Publication number
WO2020020027A1
WO2020020027A1 PCT/CN2019/096308 CN2019096308W WO2020020027A1 WO 2020020027 A1 WO2020020027 A1 WO 2020020027A1 CN 2019096308 W CN2019096308 W CN 2019096308W WO 2020020027 A1 WO2020020027 A1 WO 2020020027A1
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WIPO (PCT)
Prior art keywords
sub
touch
electrode
electrodes
grid
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PCT/CN2019/096308
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English (en)
French (fr)
Inventor
李园园
郑美珠
李俊杰
Original Assignee
京东方科技集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US16/639,033 priority Critical patent/US11003298B2/en
Priority to EP19841365.0A priority patent/EP3828674A4/en
Priority to JP2020564720A priority patent/JP7425426B2/ja
Publication of WO2020020027A1 publication Critical patent/WO2020020027A1/zh
Priority to US17/211,328 priority patent/US11385752B2/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—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
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • G—PHYSICS
    • G06—COMPUTING; 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
    • 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
    • G06F3/0448—Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/40—OLEDs integrated with touch screens
    • 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
    • G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
    • 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
    • G06F2203/04112—Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material

Definitions

  • the present disclosure relates to the field of touch technology, and in particular, to a touch module, a touch display substrate, and a touch display device.
  • a conductive grid can be used to make the touch electrodes.
  • the conductive grid is unevenly distributed in the touch area, the light transmittance of the entire touch module will be inconsistent, reducing the display device with the touch module. Display effect.
  • An embodiment of the present disclosure provides a touch module, including:
  • the conductive grid layer covers the entire touch area on the base substrate.
  • the conductive grid layer includes a plurality of first touch electrodes and a plurality of second touch electrodes.
  • the electrode and the second touch electrode are arranged to be insulated from each other.
  • Each of the first touch electrodes includes a plurality of connected first sub-electrodes
  • each of the second touch electrodes includes a plurality of independent second sub-electrodes.
  • the first sub-electrode and the second sub-electrode each include a plurality of grids connected to each other, and the grid is surrounded by a plurality of conductive lines crossing;
  • the bridge pattern and the conductive grid layer are arranged in different layers; adjacent second sub-electrodes belonging to the same second touch electrode are connected through the bridge pattern.
  • a mesh on a boundary line between the first sub-electrode and the second sub-electrode adjacent to each other The conductive lines of the grid are disconnected to insulate the first touch electrode and the second touch electrode that are arranged to cross each other, and a boundary line between the first sub-electrode and the second sub-electrode located adjacent to each other. It is formed by the line connecting the break points of the grid on the boundary line.
  • a boundary line of the first sub-electrode and the second sub-electrode adjacent to each other is formed as a broken line.
  • an extension direction of the boundary line and an extension direction of the first touch electrode, and an extension direction of the boundary line and an extension direction of the second touch electrode both intersect.
  • the bridging pattern includes at least one grid pattern, and each of the grid patterns includes a plurality of meshes connected to each other, and an area where the grid pattern on the bridging pattern is located in the lining.
  • the orthographic projection on the base substrate overlaps with the orthographic projection of a part of the grid on the conductive grid layer on the base substrate.
  • each of the bridging patterns is connected to the second sub-electrode through a plurality of contact holes, and the plurality of contact holes corresponding to the same bridging pattern are electrically conductive for forming a grid The lines are connected.
  • the orthographic projection of the plurality of contact holes on the base substrate overlaps with the orthographic projection of the second sub-electrode on the base substrate.
  • the conductive grid layer further includes:
  • a dummy pattern being disposed inside the first sub-electrode and / or the second sub-electrode, the first sub-electrode and / or the second sub-electrode and the dummy Graphic insulation.
  • At least one dummy pattern is disposed inside each of the first and second sub-electrodes, and a dummy pattern disposed inside each of the first and second sub-electrodes is provided.
  • the shapes, sizes and corresponding positions of the figures are almost the same.
  • the first sub-electrode and the second sub-electrode are substantially rhombic, and the shape of the dummy pattern is substantially the same as the shape of the first sub-electrode and the second sub-electrode.
  • each of the first sub-electrode and the second sub-electrode includes four virtual figures, the four virtual figures are arranged in three rows and three columns, and each side of the virtual figure and each of the sub-electrodes are The corresponding sides are approximately parallel.
  • the virtual figure is formed by a line connecting the break points of a grid at the boundary of the area where the virtual figure is located.
  • the virtual graphics are insulated from each other.
  • two adjacent first sub-electrodes in the first touch electrode are connected by a grid channel connected with a connection provided on the same layer as the adjacent two first sub-electrodes; the connection The grid channel is used to disconnect from the second touch electrode.
  • the first touch electrodes are arranged along a row direction, and the second touch electrodes are arranged along a column direction.
  • An embodiment of the present disclosure further provides a touch display substrate including the above-mentioned touch module.
  • the base substrate of the touch display substrate is multiplexed with the base substrate of the touch module.
  • the touch display substrate further includes:
  • a plurality of sub-pixels wherein an orthographic projection of the sub-pixels on the base substrate is located in an orthographic region of a grid on the conductive grid layer on the base substrate.
  • each of the grids corresponds to one of the sub-pixels, and the shape of the grid is the same as the shape of the sub-pixels.
  • a size of each of the grids is larger than a size of a light emitting area of the corresponding sub-pixel.
  • the orthographic projection of the light-emitting area of the sub-pixel on the base substrate does not overlap with the orthographic projection of the conductive line on the base substrate.
  • the touch display substrate is a flexible organic light emitting diode touch display substrate.
  • An embodiment of the present disclosure further provides a touch display device including the touch display substrate described above.
  • FIG. 1 is a schematic structural diagram of a touch module according to some embodiments of the present disclosure.
  • FIG. 2 is a schematic structural diagram of a conductive mesh layer according to some embodiments of the present disclosure.
  • FIG. 3 is a schematic structural diagram of a conductive mesh layer according to some embodiments of the present disclosure.
  • FIG. 4 is a schematic structural diagram of a conductive mesh layer according to some embodiments of the present disclosure.
  • FIG. 5 is a schematic structural diagram of a conductive mesh layer according to some embodiments of the present disclosure.
  • FIG. 6 is a schematic diagram of a boundary line between a first sub-electrode and a second sub-electrode according to some embodiments of the present disclosure
  • FIG. 7 is a schematic diagram of two adjacent second sub-electrodes according to some embodiments of the present disclosure.
  • FIG. 8 is a schematic diagram of a bridging pattern in some embodiments of the present disclosure.
  • FIG. 9 is a schematic diagram of a bridging pattern in some embodiments of the present disclosure.
  • FIG. 10 is a schematic diagram of a bridging pattern in some embodiments of the present disclosure.
  • FIG. 11 is a schematic diagram of a bridging pattern in some embodiments of the present disclosure.
  • FIG. 12 is a schematic diagram of a bridging pattern in some embodiments of the present disclosure.
  • FIG. 13 is a schematic diagram of a bridging pattern in some embodiments of the present disclosure.
  • FIG. 14 is a schematic diagram of a bridging pattern in some embodiments of the present disclosure.
  • FIG. 15 is a schematic diagram of a virtual electrode according to some embodiments of the present disclosure.
  • FIG. 16 is a schematic structural diagram of a touch module according to some embodiments of the present disclosure.
  • FIG. 17 is a schematic structural diagram of a touch display substrate according to some embodiments of the present disclosure.
  • FIG. 18 is a schematic diagram of a position relationship between a sub-pixel and a conductive grid layer on a touch display substrate according to some embodiments of the present disclosure
  • FIG. 19 is a schematic structural diagram of a touch module according to some embodiments of the present disclosure.
  • some embodiments of the present disclosure provide a touch module including a base substrate, a conductive grid layer and a bridge pattern 11 disposed on the base substrate.
  • the conductive grid layer covers the entire touch area on the base substrate (for example, as shown in FIG. 19, the conductive grid layer covers the entire touch area 22 on the base substrate 20).
  • the grid layer includes a plurality of first touch electrodes 101 and a plurality of second touch electrodes 102.
  • the first touch electrodes 101 and the second touch electrodes 102 are cross-insulated, and each of the first The touch electrode 101 includes a plurality of connected first sub-electrodes 1011, and each of the second touch electrodes 102 includes a plurality of independent second sub-electrodes 1021; the first sub-electrode 1011 and the second sub-electrode
  • Each of 1021 includes a plurality of grids connected to each other, and the grid is surrounded by a plurality of conductive lines. In some embodiments, multiple grids are the same size and arranged in an array.
  • the bridging pattern 11 (grid pattern with thicker lines in FIG. 1) and the conductive grid layer are arranged in different layers, and are used to connect adjacent ones of the second touch electrodes 102 belonging to the same second touch electrode 102. ⁇ ⁇ electrode 1021.
  • the touch electrodes are made of a conductive mesh layer, and the conductive mesh layer covers the entire touch area on the substrate, so that the light transmittance of the entire touch module can be ensured to be consistent. And improve the display effect of the display device having the touch module.
  • the conductive mesh layer is made of a metal material. Compared with ITO materials, metal materials have better ductility and are not easy to break. Therefore, the use of metal grids to make touch electrodes can improve the bendability of touch modules, making the touch modules suitable for flexible display devices. .
  • the conductive grid layer may be formed by a photolithography process.
  • the first sub-electrode 1011 and the second sub-electrode 1021 are substantially rhombic, respectively.
  • the first sub-electrode 1011 and the second sub-electrode 1021 may also have other shapes.
  • the first sub-electrode 1011 and the second sub-electrode 1021 are substantially rectangular, or the first sub-electrode 1011 and the second sub-electrode 1021 are substantially square, respectively.
  • the grid in the embodiment of the present disclosure is hexagonal.
  • the grid may also have other shapes, such as a rhombus, as shown in FIG. 3, or other graphics, as shown in FIGS. 4 and 5.
  • the shape of the grid is the same as the shape of the sub-pixels on the display device to which the touch module of the embodiment of the present disclosure is applied, so that the aperture ratio of the display device can be increased as much as possible.
  • the conductive lines of the grid on 103 are disconnected to insulate the first touch electrode 101 and the second touch electrode 102.
  • the boundary line 103 between the first sub-electrode 1011 and the second sub-electrode 1021 adjacent to each other is formed by the disconnection point of the grid located on the boundary line.
  • a boundary line between the first sub-electrode 1011 and the second sub-electrode 1021 adjacent to each other is formed as a broken line.
  • the boundary line of the broken line shape can increase the length of the boundary line of the first touch electrode 101 and the second touch electrode 102, thereby increasing the relative area between the first touch electrode 101 and the second touch electrode 102 to increase
  • the coupling capacitance between the first touch electrode and the second touch electrode increases the amount of capacitance change caused by touch and improves touch performance.
  • the extending direction of the first touch electrode 101 is a row direction (as shown by the arrow A1 in FIG. 1), and the extending direction of the second touch electrode 102 is a column direction (as shown in FIG. 1).
  • the extending direction of the first touch electrode 101 may be a column direction
  • the extending direction of the second touch electrode 102 may be a row direction.
  • FIG. 7 is an enlarged schematic diagram of a grid within a dashed box in FIG. 1. As can be seen from FIG.
  • the adjacent two first sub-electrodes 1011 of the first touch electrode 101 are connected by a grid channel 1012 connected with the adjacent two first sub-electrodes 1011 on the same layer. ; And the adjacent two second sub-electrodes 1021 of the second touch electrode 102 are not connected on the same layer where the adjacent two second sub-electrodes 1021 are located, and are connected to the first touch electrode 101 with a grid.
  • Channel 1012 is open.
  • Adjacent two second sub-electrodes 1021 of the second touch electrode 102 are connected by a bridge pattern 11 provided in a different layer from the adjacent two second sub-electrodes 1021.
  • the bridge pattern 11 includes at least one grid pattern, and each of the grid patterns includes a plurality of meshes connected to each other.
  • the orthographic projection of the area where the grid pattern is located on the base substrate overlaps with the orthographic projection of part of the grid on the conductive grid layer on the base substrate, so as not to affect the transparency of the touch module.
  • Photometric it should be noted that the area where the grid pattern on the bridge pattern 11 is located includes conductive lines that cross each other to surround the grid and a blank area inside the grid.
  • each pair of adjacent and interconnected second sub-electrodes 1021 corresponds to a bridge pattern 11.
  • each of the bridge patterns 11 passes A plurality of (at least three) contact holes 12 are connected to the second sub-electrode 1021.
  • a plurality of contact holes 12 corresponding to the same bridging pattern are connected by conductive lines for forming a grid.
  • a bridge pattern may include a grid pattern. Please refer to FIG. 8 to FIG. 11 and FIG. 13. At this time, a plurality of contact holes 12 belonging to the same bridge pattern are used to form a net.
  • a bridge pattern may also include multiple grid patterns, as shown in FIG. 12 and FIG. 14, multiple contact holes 12 belonging to the same grid pattern are connected by conductive lines for forming a grid.
  • the bridge pattern 11 is connected to the second sub-electrode 1021 through a plurality of contact holes 12 and belongs to the same bridge pattern 11 or multiple contacts of the same grid pattern of the same bridge pattern 11.
  • the holes 12 are connected by conductive lines used to form a grid, so that even if the individual contact holes 12 or the grid pattern are defective in the manufacturing process, the overall touch performance will not be affected.
  • the conductive grid layer may further include a dummy pattern 13, and the dummy pattern 13 is disposed on the first sub-electrode 1011. And / or within the second sub-electrode 1021, the dummy pattern 13 is insulated from the sub-electrode (first sub-electrode 1011 or second sub-electrode 1021) in the region where the dummy pattern 13 is located, ie, the dummy pattern 13 and the sub-electrode in the region The conductive lines of the grid of the boundary area (the dotted square in FIG. 15) are broken.
  • the virtual figure 13 may have various shapes, such as a rhombus, a pentagram, and the like.
  • each sub-electrode includes a virtual pattern 13, and the number of the virtual patterns 13 on each sub-electrode may be one or multiple.
  • at least one dummy pattern is disposed inside each of the first and second sub-electrodes, and a dummy pattern disposed inside each of the first and second sub-electrodes is provided.
  • the shape, size and corresponding position of the graphics are the same.
  • the corresponding position mentioned here refers to the relative position of the virtual pattern in the sub-electrode (first sub-electrode and second sub-electrode) region.
  • first sub-electrode and the second sub-electrode are substantially rhombic, and the shape of the dummy pattern is the same as the shape of the first sub-electrode and the second sub-electrode.
  • each of the first sub-electrode and the second sub-electrode includes four virtual figures, the four virtual figures are arranged in two rows and two columns, and each side of the virtual figure and each of the sub-electrodes are The corresponding sides are parallel.
  • dividing the virtual pattern 13 in the sub-electrode can reduce the area of the touch electrode and optimize the capacitance value of the touch electrode.
  • the virtual pattern 13 is formed by the The formation of the disconnection line can ensure the consistency of the light transmittance of the entire touch module and improve the display effect of the display device with the touch module.
  • the touch module in the embodiment of the present disclosure can be manufactured independently, and can be pasted on the display substrate after the manufacturing is completed.
  • the touch module may also be integrated on the display substrate.
  • the present disclosure also provides a touch display substrate including the touch module in any one of the above embodiments.
  • the touch electrodes are made of a conductive grid layer, and the conductive grid layer covers the entire touch area on the base substrate, so that the light transmittance of the entire touch display substrate can be ensured to be consistent. And improve the display effect of a display device having the touch display substrate.
  • the conductive mesh layer is made of a metal material
  • the touch electrode is made of a metal mesh.
  • the metal material has better ductility and is less likely to break, so The use of a metal grid for the touch electrode can improve the bendability of the touch display substrate, making the touch display substrate suitable for a flexible display device.
  • the base substrate of the touch display substrate is multiplexed with the base substrate of the touch module.
  • the touch module is integrated on the display substrate, and the conventional external touch screen is eliminated, which can reduce the thickness of the touch display device having the touch display substrate, and is beneficial to realize ultra-thin display.
  • the touch module and the display substrate share a single base substrate, which reduces one base substrate. While reducing the thickness, it can also improve the light output effect.
  • the touch display substrate in the embodiments of the present disclosure may be a display substrate applied to a liquid crystal display device, a display substrate applied to an organic light emitting diode display device, or a display substrate applied to other types of display devices.
  • the touch display substrate is a display substrate applied to a liquid crystal display device
  • the display substrate may be a color filter substrate
  • the conductive grid layer in the touch module may be disposed on a light emitting side of the base substrate of the color filter substrate.
  • the conductive grid layer in the touch module may be located on the packaging layer of the organic light emitting diode.
  • FIG. 17 is a schematic structural diagram of a touch display substrate according to an embodiment of the present disclosure.
  • the touch display substrate includes a base substrate 20 and a light emitting diode device 30 disposed on the base substrate 20 for packaging.
  • the conductive mesh layer 10 please refer to the conductive mesh layer in the touch module in the above embodiment, and the description will not be repeated here.
  • the base substrate 20 is a flexible substrate, so that it can be applied to a flexible display device.
  • the touch display substrate in the embodiment of the present disclosure may further include a plurality of sub-pixels, wherein an orthographic projection of the sub-pixels on the base substrate is located on the conductive grid layer and the grid on the substrate. In the orthographic projection area on the base substrate, the occurrence of a moire interference pattern is avoided, thereby not affecting the normal display.
  • each of the grids corresponds to one of the sub-pixels, and the shape of the grid pattern is the same as the shape of the sub-pixels.
  • the touch display substrate includes three colors of sub-pixels, which are red sub-pixel (R), green sub-pixel (G), and blue sub-pixel (B).
  • the shape of the sub-pixel is the same as the shape of the grid, both of which are hexagons.
  • the orthographic projection of the sub-pixel on the base substrate is located in the orthographic region of the grid on the base substrate.
  • the sub-pixels include a light-emitting region and a non-light-emitting region (such as a region where the driving structure is located).
  • the orthographic projection of the sub-pixel on the base substrate is located at the orthography of the grid on the base substrate.
  • the projection area refers to the orthographic projection of the light-emitting area of the sub-pixel on the substrate.
  • the blank area inside the grid is located in the orthographic area of the substrate, and the light-emitting area of the sub-pixel is on the base substrate.
  • the orthographic projection does not overlap the orthographic projection of the conductive line on the substrate.
  • An embodiment of the present disclosure further provides a touch display device including the touch display substrate in any one of the above embodiments.

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  • Human Computer Interaction (AREA)
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Abstract

本公开提供一种触控模组、触控显示基板和触控显示装置，该触控模组包括：衬底基板以及设置于衬底基板上的导电网格层和架桥图形；导电网格层布满衬底基板上的整个触控区域。导电网格层包括多个第一触控电极和多个第二触控电极，第一触控电极和所述第二触控电极交叉绝缘设置，每一第一触控电极包括多个相连的第一子电极，每一第二触控电极包括多个独立的第二子电极；架桥图形与所述导电网格层异层设置；属于同一第二触控电极的相邻的第二子电极通过架桥图形连接。

Description

触控模组、触控显示基板和触控显示装置
相关申请的交叉引用
本申请主张在2018年7月25日在中国提交的中国专利申请号No.201810825645.7的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及触控技术领域，尤其涉及一种触控模组、触控显示基板和触控显示装置。
背景技术
显示装置中可以采用导电网格制作触摸电极，然而，如果导电网格在触控区域分布不均，会导致整个触控模组的透光率的不一致，降低具有该触控模组的显示装置的显示效果。
发明内容
本公开实施例提供一种触控模组，包括：
衬底基板以及设置于所述衬底基板上的导电网格层和架桥图形；
所述导电网格层布满所述衬底基板上的整个触控区域，所述导电网格层包括：多个第一触控电极和多个第二触控电极，所述第一触控电极和所述第二触控电极交叉绝缘设置，每一所述第一触控电极包括多个相连的第一子电极，每一所述第二触控电极包括多个独立的第二子电极；所述第一子电极和所述第二子电极均包括相互衔接的多个网格，所述网格由多条导电线交叉围成；
所述架桥图形与所述导电网格层异层设置；属于同一所述第二触控电极的相邻的所述第二子电极通过所述架桥图形连接。
在一些实施例中，相互交叉设置的所述第一触控电极和所述第二触控电极中，位置相邻的所述第一子电极和所述第二子电极的边界线上的网格的导电线断开，以使相互交叉设置的所述第一触控电极和所述第二触控电极绝缘， 其中，位置相临的第一子电极和所述第二子电极的边界线由位于边界线上的网格的断开点连线形成。
在一些实施例中，位置相邻的所述第一子电极和所述第二子电极的边界线形成为折线。
在一些实施例中，所述边界线的延伸方向与所述第一触控电极的延伸方向，所述边界线的延伸方向和所述第二触控电极的延伸方向均相交。
在一些实施例中，所述架桥图形包括至少一个网格图案，每一所述网格图案包括相互衔接的多个网格，所述架桥图形上的网格图案所在区域在所述衬底基板上的正投影，与所述导电网格层上的部分网格在所述衬底基板上的正投影重叠。
在一些实施例中，每一所述架桥图形通过多个接触孔与所述第二子电极连接，且对应于同一所述架桥图形的多个接触孔通过用于围成网格的导电线相连。
在一些实施例中，所述多个接触孔在所述衬底基板上的正投影与所述第二子电极在所述衬底基板上的正投影重叠。
在一些实施例中，所述导电网格层还包括：
虚拟图形，所述虚拟图形设置于所述第一子电极和/或所述第二子电极内部，所述第一子电极和/或所述第二子电极和设置于其内部的所述虚拟图形绝缘。
在一些实施例中，每一所述第一子电极和所述第二子电极内部均设置有至少一个虚拟图形，且每一所述第一子电极和所述第二子电极内部设置的虚拟图形的形状、尺寸以及对应位置均大致相同。
在一些实施例中，所述第一子电极和所述第二子电极大致呈菱形，所述虚拟图形的形状与所述第一子电极和第二子电极的形状大致相同。
在一些实施例中，每一所述第一子电极和第二子电极包括四个虚拟图形，所述四个虚拟图形呈三行三列排列，所述虚拟图形的各个边与子电极的各对应边大致平行。
在一些实施例中，所述虚拟图形由所述虚拟图形所在区域边界的网格的断开点连线形成。
在一些实施例中，所述虚拟图形相互绝缘。
在一些实施例中，所述第一触控电极中相邻的两个第一子电极通过与所述相邻的两个第一子电极同层设置的连接用网格通道连接；所述连接用网格通道与所述第二触控电极断开。
在一些实施例中，所述第一触控电极沿着行方向排列设置，所述第二触控电极沿着列方向排列设置。
本公开实施例还提供一种触控显示基板，包括上述触控模组。
在一些实施例中，所述触控显示基板的衬底基板与所述触控模组的衬底基板复用。
在一些实施例中，所述触控显示基板还包括：
多个亚像素，其中，所述亚像素在所述衬底基板上的正投影位于所述导电网格层上的网格在所述衬底基板上的正投影区域内。
在一些实施例中，每一所述网格对应一个所述亚像素，所述网格的形状与所述亚像素的形状相同。
在一些实施例中，每一所述网格的尺寸大于对应的所述亚像素的发光区域的尺寸。
在一些实施例中，所述亚像素的发光区域在所述衬底基板上的正投影与所述导电线在所述衬底基板上的正投影不重叠。
在一些实施例中，所述触控显示基板为柔性有机发光二极管触控显示基板。
本公开实施例还提供一种触控显示装置，包括上述触控显示基板。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对本公开实施例的描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本公开一些实施例的触控模组的结构示意图；
图2为本公开一些实施例的导电网格层的结构示意图；
图3为本公开一些实施例的导电网格层的结构示意图；
图4为本公开一些实施例的导电网格层的结构示意图；
图5为本公开一些实施例的导电网格层的结构示意图；
图6为本公开一些实施例的第一子电极和第二子电极的边界线的示意图；
图7为本公开一些实施例的两相邻的第二子电极的示意图；
图8为本公开一些实施例的架桥图形的示意图；
图9为本公开一些实施例的架桥图形的示意图；
图10为本公开一些实施例的架桥图形的示意图；
图11为本公开一些实施例的架桥图形的示意图；
图12为本公开一些实施例的架桥图形的示意图；
图13为本公开一些实施例的架桥图形的示意图；
图14为本公开一些实施例的架桥图形的示意图；
图15为本公开一些实施例的虚拟电极的示意图；
图16为本公开一些实施例的触控模组的结构示意图；
图17为本公开一些实施例的触控显示基板的结构示意图；
图18为本公开一些实施例的触控显示基板上的亚像素和导电网格层的位置关系示意图；
图19为本公开一些实施例的触控模组的结构示意图。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例的附图，对本公开实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本公开的一部分实施例，而不是全部的实施例。基于所描述的本公开的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本公开保护的范围。
请参考图1，本公开的一些实施例提供一种触控模组，包括：衬底基板以及设置于所述衬底基板上的导电网格层和架桥图形11。
所述导电网格层布满所述衬底基板上的整个触控区域(例如，如图19所示，导电网格层布满衬底基板20上的整个触控区域22)，所述导电网格层包 括：多个第一触控电极101和多个第二触控电极102，所述第一触控电极101和所述第二触控电极102交叉绝缘设置，每一所述第一触控电极101包括多个相连的第一子电极1011，每一所述第二触控电极102包括多个独立的第二子电极1021；所述第一子电极1011和所述第二子电极1021均包括相互衔接的多个网格，所述网格由多条导电线围成。在一些实施例中，多个网格大小相同且呈阵列排布。
所述架桥图形11(图1中线条颜色较粗的网格图案)与所述导电网格层异层设置，用于连接属于同一所述第二触控电极102的相邻的所述第二子电极1021。
本公开实施例中，触控电极采用导电网格层制成，且导电网格层布满所述衬底基板上的整个触控区域，因而可以保证整个触控模组的透光率的一致性，提高具有该触控模组的显示装置的显示效果。
本公开实施例中，在一些实施例中，所述导电网格层采用金属材料制成。相比ITO材料，金属材料具有更好的延展性，不易断裂，因而采用金属网格制作触控电极，能够提高触控模组的可弯折性能，使得触控模组可适合于柔性显示装置。
本公开实施例中，所述导电网格层可以采用光刻工艺形成。
在图1所示的实施例中，所述第一子电极1011和所述第二子电极1021分别大致呈菱形。当然，在本公开的其他一些实施例中，第一子电极1011和第二子电极1021也可以为其他形状。例如，所述第一子电极1011和所述第二子电极1021分别大致呈长方形，或所述第一子电极1011和所述第二子电极1021分别大致正方形。
请同时参考图2，本公开实施例中的网格呈六边形。当然，在本公开的其他一些实施例中，网格也可以为其他形状，例如菱形，如图3所示，或者，其他图形，如图4和图5所示。在一些实施例中，网格的形状与本公开实施例的触控模组应用的显示装置上的亚像素的形状相同，从而可以尽可能增大显示装置的开口率。
请参考图6，本公开实施例中，相互交叉设置的第一触控电极和第二触控电极中，位置相邻的所述第一子电极1011和所述第二子电极1021的边界 线103上的网格的导电线断开，以使所述第一触控电极101和所述第二触控电极102绝缘。其中，位置相邻的第一子电极1011和所述第二子电极1021的边界线103由位于边界线上的网格的断开点连线形成。
该种结构下，相邻的第一触控电极101和第二触控电极102之间不会存在空白区域，均布满网格，从而可以保证整个触控模组的透光率的一致性，提高具有该触控模组的显示装置的显示效果。
本公开实施例中，在一些实施例中，请参考图6，位置相邻的所述第一子电极1011和所述第二子电极1021的边界线形成为折线。折线形状的边界线可以增加第一触控电极101和第二触控电极102的边界线的长度，从而可以增加第一触控电极101和第二触控电极102之间的相对面积，以增加第一触控电极和第二触控电极之间的耦合电容，提高触控时引起的电容变化量，提升触控性能。
在图1所示的实施例中，第一触控电极101的延伸方向为行方向(如图1中箭头A1所示的方向)，第二触控电极102的延伸方向为列方向(如图1中箭头A2所示的方向)。当然在本公开的其他一些实施例中，也可以是第一触控电极101的延伸方向为列方向，第二触控电极102的延伸方向为行方向。
在图1所示的实施例中，第一触控电极101的相邻的两个第一子电极1011之间通过与相邻的两个第一子电极1011同层设置的连接用网格通道连接，第二触控电极102的相邻的两个第二子电极1021在相邻的两个第二子电极1021所在的同一层不连接。请同时参考图7，图7为图1中虚线方框内的网格的放大示意图。从图7中可以看出，第一触控电极101的相邻的两个第一子电极1011之间通过与相邻的两个第一子电极1011同层设置的连接用网格通道1012连接；而第二触控电极102的相邻的两个第二子电极1021在相邻的两个第二子电极1021所在的同一层不连接，并与第一触控电极101的连接用网格通道1012断开。第二触控电极102的相邻的两个第二子电极1021通过与相邻的两个第二子电极1021异层设置的架桥图形11连接。
请参考图8-图14，本公开实施例中，所述架桥图形11包括至少一个网格图案，每一所述网格图案包括相互衔接的多个网格，所述架桥图形11上的网格图案所在区域在所述衬底基板上的正投影，与所述导电网格层上的部分 网格在所述衬底基板上的正投影重叠，从而不影响触控模组的透光率。此处，需要说明的是，所述架桥图形11上的网格图案所在区域包括相互交叉围成所述网格的导电线以及网格内部的空白区域。
本公开实施例中，每一对相邻且相互连接的第二子电极1021对应一架桥图形11，在一些实施例中，请参考图8-图14，每一所述架桥图形11通过多个(至少三个)接触孔12与所述第二子电极1021连接。在一些实施例中，请参考图8-图11和图13，对应于同一所述架桥图形的多个接触孔12通过用于围成网格的导电线相连。本公开实施例中，一个架桥图形可以包括一个网格图案，请参考图8-图11和图13，此时，属于同一所述架桥图形的多个接触孔12通过用于围成网格的导电线相连。当然，一个架桥图形也可以包括多个网格图案，如图12和图14，属于同一网格图案的多个接触孔12通过用于围成网格的导电线相连。本公开实施例中，所述架桥图形11通过多个接触孔12与所述第二子电极1021连接，且属于同一架桥图形11或者同一架桥图形11的同一网格图案的多个接触孔12通过用于围成网格的导电线相连，这样即使个别接触孔12或网格图案在制作过程中不良，也不会影响整体的触控性能。
本公开的一些实施例中，请参考图1、图15和图16，所述导电网格层还可以包括：虚拟(dummy)图形13，所述虚拟图形13设置于所述第一子电极1011和/或所述第二子电极1021内，所述虚拟图形13与其所在区域的子电极(第一子电极1011或第二子电极1021)绝缘，即，虚拟图形13和与其所在区域的子电极的边界区域(图15中的虚线方框)的网格的导电线断开。本公开实施例中，所述虚拟图形13可以为多种形状，例如菱形，五角星形等。在一些实施例中，每一子电极上都包括虚拟图形13，且每一子电极上的虚拟图形13的个数可以为一个，也可以为多个。在一些实施例中，每一所述第一子电极和所述第二子电极内部均设置有至少一个虚拟图形，且每一所述第一子电极和所述第二子电极内部设置的虚拟图形的形状、尺寸以及对应位置均相同。此处所说的对应位置是指，虚拟图形在子电极(第一子电极和第二子电极)区域中的相对位置。在一些实施例中，所述第一子电极和所述第二子电极大致呈菱形，所述虚拟图形的形状与所述第一子电极和第二子电极的形 状相同。在一些实施例中，每一所述第一子电极和第二子电极包括四个虚拟图形，所述四个虚拟图形呈二行二列排列，所述虚拟图形的各个边与子电极的各对应边平行。
本公开实施例中，在子电极内分割出虚拟图形13，可以减少触控电极的面积，优化触控电极的电容值，同时，由于虚拟图形13由其所在区域的子电极中的网格的断开点连线形成，可以保证整个触控模组透光率的一致性，提高具有该触控模组的显示装置的显示效果。
本公开实施例中的触控模组可以独立制作，制作完成后可以贴覆至显示基板上。
在本公开的其他一些实施例中，触控模组也可以集成在显示基板上。
本公开还提供一种触控显示基板，包括上述任一实施例中的触控模组。
本公开实施例中，触控电极采用导电网格层制成，且导电网格层布满所述衬底基板上的整个触控区域，因而可以保证整个触控显示基板的透光率的一致性，提高具有该触控显示基板的显示装置的显示效果。
本公开实施例中，在一些实施例中，导电网格层采用金属材料制成，触控电极采用金属网格制成，相比ITO材料，金属材料具有更好的延展性，不易断裂，因而采用金属网格制作触控电极，能够提高触控显示基板的可弯折性能，使得触控显示基板适合于柔性显示装置。
在一些实施例中，所述触控显示基板的衬底基板与所述触控模组的衬底基板复用。
本公开实施例中，将触控模组集成在显示基板上，去除传统的外挂式的触控屏，可以降低具有该触控显示基板的触控显示装置的厚度，有利于实现超薄显示。同时，触控模组与显示基板复用一张衬底基板，减少了一张衬底基板，在降低厚度的同时，还可以提高出光效果。
本公开实施例中的触控显示基板可以是应用于液晶显示装置的显示基板，也可以是应用于有机发光二极管显示装置的显示基板，或者是应用于其他类型的显示装置的显示基板。当触控显示基板是应用于液晶显示装置的显示基板时，所述显示基板可以是彩膜基板，触控模组中的导电网格层可以设置于彩膜基板的衬底基板的出光侧。当触控显示基板是应用于有机发光二极管显 示装置的显示基板时，触控模组中的导电网格层可以位于设置于有机发光二极管的封装层之上。
请参考图17，图17为本公开一实施例的触控显示基板的结构示意图，该触控显示基板包括：衬底基板20，设置于衬底基板20上的发光二极管器件30，用于封装发光二极管器件的薄膜封装层40，以及设置于薄膜封装层40上的导电网格层10。导电网格层10的结构请参见上述实施例中的触控模组中的导电网格层，在此不再重复说明。
本公开实施例中，在一些实施例中，所述衬底基板20为柔性基板，从而可以应用于柔性显示装置。
本公开实施例中的触控显示基板还可以包括：多个亚像素，其中，所述亚像素在所述衬底基板上的正投影位于所述导电网格层上的网格在所述衬底基板上的正投影区域内，避免出现莫瑞干扰纹，从而不影响正常显示。
在一些实施例中，每一所述网格对应一个所述亚像素，所述网格图案的形状与所述亚像素的形状相同。
请参考图18，图18所示的实施例中，触控显示基板包括三种颜色的亚像素，分别为红色亚像素(R)、绿色亚像素(G)和蓝色亚像素(B)，亚像素的形状与网格的形状相同，均为六边形，亚像素在所述衬底基板上的正投影位于网格在衬底基板上的正投影区域内。此处，需要说明的是，亚像素包括发光区域和非发光区域(如驱动结构所在的区域)，此处亚像素在所述衬底基板上的正投影位于网格在衬底基板上的正投影区域内是指亚像素的发光区域在衬底基板上的正投影位于网格内部的空白处在衬底基板上的正投影区域内，且亚像素的发光区域在所述衬底基板上的正投影与导电线在衬底基板上的正投影不重叠。
本公开实施例还提供一种触控显示装置，包括上述任一实施例中的触控显示基板。
除非另作定义，本公开中使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。“连接”或者“相连”等类似的词语并非限定于物理的 或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也相应地改变。
以上所述是本公开的可选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本公开所述原理的前提下，还可以作出若干改进和润饰，这些改进和润饰也应视为本公开的保护范围。

Claims (23)

  1. 一种触控模组，包括：
    衬底基板以及设置于所述衬底基板上的导电网格层和架桥图形；
    其中，所述导电网格层布满所述衬底基板上的整个触控区域，所述导电网格层包括多个第一触控电极和多个第二触控电极，所述第一触控电极和所述第二触控电极交叉绝缘设置，每一所述第一触控电极包括多个相连的第一子电极，每一所述第二触控电极包括多个独立的第二子电极；所述第一子电极和所述第二子电极均包括相互衔接的多个网格，所述网格由多条导电线交叉围成；
    所述架桥图形与所述导电网格层异层设置；属于同一所述第二触控电极的相邻的所述第二子电极通过所述架桥图形连接。
  2. 根据权利要求1所述的触控模组，其中，相互交叉设置的所述第一触控电极和所述第二触控电极中，位置相邻的所述第一子电极和所述第二子电极的边界线上的网格的导电线断开，以使相互交叉设置的所述第一触控电极和所述第二触控电极绝缘，其中，位置相邻的第一子电极和所述第二子电极的边界线由位于边界线上的网格的断开点连线形成。
  3. 根据权利要求2所述的触控模组，其中，位置相邻的所述第一子电极和所述第二子电极的边界线形成为折线。
  4. 根据权利要求2所述的触控模组，其中，所述边界线的延伸方向与所述第一触控电极的延伸方向，所述边界线的延伸方向和所述第二触控电极的延伸方向均相交。
  5. 根据权利要求1所述的触控模组，其中，所述架桥图形包括至少一个网格图案，每一所述网格图案包括相互衔接的多个网格，所述架桥图形上的网格图案所在区域在所述衬底基板上的正投影，与所述导电网格层上的部分网格在所述衬底基板上的正投影重叠。
  6. 根据权利要求5所述的触控模组，其中，每一所述架桥图形通过多个接触孔与所述第二子电极连接，且对应于同一所述架桥图形的多个接触孔通过用于围成网格的导电线相连。
  7. 根据权利要求6所述的触控模组，其中，所述多个接触孔在所述衬底基板上的正投影与所述第二子电极在所述衬底基板上的正投影重叠。
  8. 根据权利要求1所述的触控模组，其中，所述导电网格层还包括：
    虚拟图形，所述虚拟图形设置于所述第一子电极和/或所述第二子电极内部，所述第一子电极和/或所述第二子电极和设置于其内部的所述虚拟图形绝缘。
  9. 根据权利要求8所述的触控模组，其中，每一所述第一子电极和所述第二子电极内部均设置有至少一个虚拟图形，且每一所述第一子电极和所述第二子电极内部设置的虚拟图形的形状、尺寸以及对应位置均大致相同。
  10. 根据权利要求9所述的触控模组，其中，所述第一子电极和所述第二子电极大致呈菱形，所述虚拟图形的形状与所述第一子电极和第二子电极的形状大致相同。
  11. 根据权利要求10所述的触控模组，其中，每一所述第一子电极和第二子电极包括四个虚拟图形，所述四个虚拟图形呈二行二列排列，所述虚拟图形的各个边与子电极的各对应边大致平行。
  12. 根据权利要求8所述的触控模组，其中，所述虚拟图形由所述虚拟图形所在区域边界的网格的断开点连线形成。
  13. 根据权利要求12所述的触控模组，其中，所述虚拟图形相互绝缘。
  14. 根据权利要求1所述的触控模组，其中，所述第一触控电极中相邻的两个第一子电极通过与所述相邻的两个第一子电极同层设置的连接用网格通道连接；所述连接用网格通道与所述第二触控电极断开。
  15. 根据权利要求1所述的触控模组，其中，所述第一触控电极沿着行方向排列设置，所述第二触控电极沿着列方向排列设置。
  16. 一种触控显示基板，包括如权利要求1-15任一项所述的触控模组。
  17. 根据权利要求16所述的触控显示基板，其中，
    所述触控显示基板的衬底基板与所述触控模组的衬底基板复用。
  18. 根据权利要求16所述的触控显示基板，还包括：
    多个亚像素，其中，所述亚像素在所述衬底基板上的正投影位于所述导电网格层上的网格在所述衬底基板上的正投影区域内。
  19. 根据权利要求18所述的触控显示基板，其中，每一所述网格对应一个所述亚像素，所述网格的形状与所述亚像素的形状相同。
  20. 根据权利要求19所述的触控显示基板，其中，每一所述网格的尺寸大于对应的所述亚像素的发光区域的尺寸。
  21. 根据权利要求20所述的触控显示基板，其中，所述亚像素的发光区域在所述衬底基板上的正投影与所述导电线在所述衬底基板上的正投影不重叠。
  22. 根据权利要求16所述的触控显示基板，其中，所述触控显示基板为柔性有机发光二极管触控显示基板。
  23. 一种触控显示装置，包括如权利要求16-22任一项所述的触控显示基板。
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