WO2016202065A1 - 一种触摸显示屏、其制作方法及显示装置 - Google Patents

一种触摸显示屏、其制作方法及显示装置 Download PDF

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Publication number
WO2016202065A1
WO2016202065A1 PCT/CN2016/079030 CN2016079030W WO2016202065A1 WO 2016202065 A1 WO2016202065 A1 WO 2016202065A1 CN 2016079030 W CN2016079030 W CN 2016079030W WO 2016202065 A1 WO2016202065 A1 WO 2016202065A1
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WIPO (PCT)
Prior art keywords
touch
touch electrode
electrode
display screen
pattern
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Ceased
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PCT/CN2016/079030
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English (en)
French (fr)
Inventor
梁魁
封宾
刘耀
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BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
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BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
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Priority to US15/511,588 priority Critical patent/US9904392B2/en
Publication of WO2016202065A1 publication Critical patent/WO2016202065A1/zh
Anticipated expiration legal-status Critical
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0445—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 OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—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
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • 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

Definitions

  • the present disclosure relates to the field of display technologies, and in particular, to a touch display screen, a manufacturing method thereof, and a display device.
  • the touch screen can be divided into an add-on touch panel, an on-cell touch panel, and an in-cell touch panel.
  • the external touch screen is a touch-sensitive liquid crystal display formed by separately separating the touch screen from the liquid crystal display and then bonding them together.
  • the completion of a complete external touch screen requires multiple turns of the primary product and two or more times of processing, and the production process is cumbersome. Therefore, in addition to the overall turnover cost and processing cost are high, since the touch screen and the liquid crystal display are not integrated, there is a problem of accuracy when the two are attached to a specific production line.
  • ITO Indium Tin Oxides
  • ITO Indium Tin Oxides
  • the present disclosure provides a touch display screen, a manufacturing method thereof, and a display device, which can improve light transmittance, bonding precision, and product yield.
  • a touch display screen including: an opposite substrate, an array substrate, and a liquid crystal layer between the opposite substrate and the array substrate, the opposite substrate facing the One side of the liquid crystal layer has a black matrix, and the touch display screen further includes:
  • the first touch electrode is located in a corresponding area of the black matrix; the first touch electrode includes a plurality of first touch sub-electrodes distributed along the first direction;
  • the second touch electrode is located in a corresponding region of the black matrix; and the second touch electrode includes a plurality of second touch sub-electrodes distributed along a second direction perpendicular to the first direction.
  • the touch display screen further includes: a polarizer located above the second touch electrode.
  • a line width of each of the first touch sub-electrodes and/or the second touch sub-electrodes is less than or equal to a line width of the black matrix.
  • a line width of each of the first touch sub-electrodes and/or the second touch sub-electrodes is 5 micrometers to 20 micrometers.
  • the touch display screen further includes: a protective layer between the polarizer and the second touch electrode.
  • the material of the protective layer may be PET, PMMA or a polarizing film material.
  • the first touch electrode is a touch driving electrode
  • the second touch electrode is a touch sensing electrode
  • the first touch electrode is a touch
  • the sensing electrode is the touch driving electrode
  • the material of the first touch electrode is a transparent conductive oxide or a metal material; and/or the material of the second touch electrode is a nano conductive ink material.
  • a method for fabricating a touch display screen includes: forming a pattern of a counter substrate having a black matrix and a pattern of an array substrate, respectively, and applying a pair of boxes to the opposite substrate and the array substrate Process, the manufacturing method further includes:
  • the first touch electrode Forming a pattern of the first touch electrode on the other side of the opposite substrate opposite to the side of the black matrix by a patterning process; the first touch electrode is disposed in a region corresponding to the black matrix; the first The touch electrode includes a plurality of first touch sub-electrodes distributed along the first direction;
  • the second touch electrode is located in a corresponding area of the black matrix; the second touch electrode includes a plurality of second touch sub-electrodes distributed along a second direction perpendicular to the first direction .
  • the manufacturing method further includes: forming a pattern of the polarizer on the second touch electrode after forming the pattern of the second touch electrode.
  • the manufacturing method further includes: forming a pattern of the protective layer on the second touch electrode after forming the pattern of the second touch electrode and before forming the pattern of the polarizer.
  • a display device comprising any of the touch display screens described above.
  • the first touch electrode and the second touch electrode disposed in the touch display screen are respectively located on a side of the opposite substrate facing away from the liquid crystal layer and respectively located in a corresponding area of the black matrix, the light reflection and the light absorption can be reduced. Improve the light transmittance, and improve the bonding accuracy and product yield.
  • FIG. 1 is a schematic structural diagram of a touch display screen according to an embodiment of the present disclosure
  • FIG. 2 is a top plan view of a touch display screen in accordance with one embodiment of the present disclosure
  • FIG. 3 is a schematic structural diagram of a touch display screen according to another embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of a touch display screen according to still another embodiment of the present disclosure.
  • FIG. 5 is a flowchart of a method of fabricating a touch display screen according to an embodiment of the present disclosure
  • 6a to 6d are schematic structural diagrams of a method of fabricating a touch display screen after each step is performed according to an embodiment of the present disclosure.
  • An embodiment of the present disclosure provides a touch display screen, as shown in FIGS. 1 and 2, including: a counter substrate 1, an array substrate 2, and a liquid crystal layer 3 between the opposite substrate 1 and the array substrate 2. a side of the opposite substrate 1 facing the liquid crystal layer 3 having a black matrix 4, the touch The touch screen also includes:
  • a first touch electrode 5, an insulating layer 6 and a second touch electrode 7 are sequentially stacked on the opposite side of the counter substrate 1 facing the liquid crystal layer 3;
  • the first touch electrode 5 is located in a corresponding area of the black matrix 4; the first touch electrode 5 includes a plurality of first touch sub-electrodes 51 distributed along the first direction (only three first touches are labeled in FIG. 2) The sub-electrodes, which are also distributed in the other vertical directions, are also the first touch sub-electrodes);
  • the second touch electrode 7 is located in a corresponding area of the black matrix 4; the second touch electrode 7 includes a plurality of second touch sub-electrodes 71 distributed along a second direction perpendicular to the first direction (only labeled in FIG. 2 Three second touch sub-electrodes are disposed, and the other horizontally-distributed electrodes are also the second touch sub-electrodes).
  • first direction and the second direction in FIG. 2 are the vertical direction and the horizontal direction, respectively, but this is only for explaining an example shown in the present disclosure.
  • first direction and the second direction are The direction is not limited to the vertical direction and the horizontal direction shown in FIG. 2.
  • the strip-shaped first touch electrodes and the second touch electrodes disposed in the touch display screen are respectively located in corresponding areas of the black matrix, and it can also be understood that they are respectively located in the black matrix.
  • the touch system including the first touch electrode and the second touch electrode is directly disposed on a side of the opposite substrate facing away from the liquid crystal layer, the touch system and the opposite substrate can be seamlessly laminated, thereby improving the sticker. Accuracy and product yield.
  • the touch display screen may further include: a polarizer 8 located above the second touch electrode 7 . Since the polarizer is provided, there is no need to externally protect the glass on the touch screen, thereby simplifying the number of layers, thereby reducing product thickness, product weight and product cost; and simultaneously placing the entire touch system directly on the opposite substrate and The entire touch system can be protected between the polarizers.
  • each of the first touch sub-electrodes and the second touch sub-electrodes are respectively located in corresponding regions of the black matrix. Therefore, as shown in FIG. 2 , each of the first touch sub-electrodes 51 and/ Or the line width of the second touch sub-electrode 71 may be less than or equal to the line width of the black matrix 4, which may further reduce the influence of the touch system on the transmittance.
  • the line width of each of the first touch sub-electrodes and/or the second touch sub-electrodes may be slightly larger than the line width of the black matrix, as long as the transmittance of the emitted light is not affected, which is not limited herein. It should be understood that the distribution position and distribution of the first touch electrode and the second touch electrode may be set according to the requirements of the touch precision. degree.
  • the line width of the general black matrix is about 5 micrometers to 20 micrometers
  • the line width of each of the first touch sub-electrodes and/or the second touch sub-electrodes is not greater than the black matrix.
  • the line width of each of the first touch sub-electrodes and/or the second touch sub-electrodes may be specifically set to be 5 micrometers to 20 micrometers. It should be understood that the line width of each of the first touch sub-electrodes and/or the second touch sub-electrodes may be set according to actual conditions, which is not limited herein.
  • the touch display screen may further include: a protective layer 9 between the polarizer 8 and the second touch electrode 7 , the protective layer 9 functions to uniformly and planarize Protect the role of the second touch electrode.
  • the material of the protective layer 9 may be one of PET, PMMA or polarizing film materials. These materials are all organic materials, so the protective layer can be closely attached to the polarizer without slits, resulting in high bonding precision. No secondary bonding is required, and the light transmittance is not substantially affected, and the transmittance of more than 10% can be improved relative to the existing touch technology.
  • the specific material of the protective layer can be set according to specific conditions, and is not limited herein.
  • the first touch electrode may be a touch driving electrode
  • the second touch electrode may be a touch sensing electrode
  • the first touch electrode may be a touch sensing electrode
  • the two touch electrodes can be touch drive electrodes, which are not limited herein.
  • the material of the first touch electrode may be specifically a transparent conductive oxide (for example, ITO or IZO), or it may be specifically a metal material.
  • the resistance can be effectively reduced.
  • the material may also be specifically a transparent conductive material such as carbon nanotubes or graphene.
  • an ITO is generally plated on the entire surface of the opposite substrate glass, but this affects the light transmittance.
  • a conventional ITO conductive film is not required, but the ITO film layer is directly formed into the first touch electrode; specifically, in order to increase the utilization function of the ITO layer and improve the light transmittance.
  • the ITO may be divided into strips to form a region corresponding to the black matrix of the opposite substrate as the first touch electrode. In this way, the use of the nano-conductive ink process can be reduced, the process can be reduced, and the cost can be reduced due to the use of the off-the-shelf ITO process.
  • the material of the insulating layer is generally a PMMA with high hardness or other organic film with good insulation and hardness
  • the material of the second touch electrode may be specifically a nano conductive ink material (for example, a particle diameter of less than 50 nm)
  • the nano silver conductive ink or other high conductivity conductive ink) is not limited herein.
  • the touch display screen can be applied to various modes of liquid crystal display panels, for example, it can be applied to an in-plane switch (IPS, In-Plane Switch) and an advanced super-dimensional field switch (ADS, Advanced Super) capable of achieving wide viewing angles.
  • IPS In-plane switch
  • ADS Advanced super-dimensional field switch
  • the Dimension Switch type liquid crystal display panel can also be applied to a conventional TN (Twisted Nematic) type liquid crystal display panel, which is not limited herein.
  • other film layer structures such as a color film layer, a common electrode layer, a pixel electrode layer, and the like may be further provided in the opposite substrate, and also in the array substrate.
  • the structure of the thin film transistor, the gate line, the data line, and the like may be formed. These specific structures may be implemented in various manners, which are not limited herein.
  • the embodiment of the present disclosure further provides a method for manufacturing a touch display screen. Since the principle of solving the problem is similar to the foregoing touch screen display, the implementation of the method can be referred to the implementation of the touch screen display. .
  • a method for fabricating a touch display screen specifically includes the following steps:
  • S501 forming a pattern of the opposite substrate having the black matrix and a pattern of the array substrate, respectively;
  • S502 forming a pattern of the first touch electrode on the other surface of the opposite substrate opposite to the side of the black matrix by the patterning process; the first touch electrode is disposed in a corresponding area of the black matrix; the first touch electrode includes a plurality of first touch sub-electrodes distributed along the first direction;
  • S505 forming a pattern of the second touch electrode on the insulating layer by using a nano conductive ink process; the second touch electrode is located in a corresponding region of the black matrix; and the second touch electrode includes a second direction perpendicular to the first direction A plurality of second touch sub-electrodes distributed.
  • the uncut product substrate may be directly transported to the nano touch film production line after applying the box process to the opposite substrate and the array substrate at step S504. Preparation of two touch electrodes. In this way, the box process is applied before the pattern of the second touch electrode is formed, the operation is convenient, the process is simplified, and the production efficiency can be improved.
  • the method may further include: after forming the first touch electrode at step S502 or forming a pattern of the second touch electrode at step S505, the first touch electrode or the second touch electrode Conduct wire inspection and repair. Check for broken wires, if there is a wire break Repair it to further improve product yield.
  • the patterning process described in the embodiments of the present disclosure includes a photoresist coating, masking, exposure, development, etching, photoresist stripping, etc.; the nano-conductive ink process includes ink spraying, 3D printing technology, and the like. Process. It should be noted that, in the manufacturing process, the conductive ink printing equipment used can be modified by the coating liquid coating equipment or the spraying equipment in the color film process, and has an independent control program, wherein the nozzle can be 5 ⁇ m to 20 ⁇ m.
  • the precision error is less than 10 ⁇ m, the coated wire width is 5 ⁇ m to 20 ⁇ m, and can also be changed according to actual needs;
  • the high temperature sintering chamber can utilize the existing high temperature chamber of the Cell line;
  • the wire inspection equipment can use Array Test electrical testing equipment.
  • Wire repair can be adapted with the existing Array Repair repair equipment.
  • Related cutting and polarizing film attachment can be completed in existing production lines; automatic electrode processing equipment is also required.
  • the method may further include After forming the pattern of the second touch electrode at step S505, a pattern of the polarizer is formed on the second touch electrode.
  • the method for fabricating the touch display screen may further include: after forming the pattern of the second touch electrode, and before forming the pattern of the polarizer on the second touch electrode Forming a pattern of the protective layer on the second touch electrode.
  • Step 1 respectively forming a pattern of the opposite substrate having the black matrix and a pattern of the array substrate;
  • Step 2 forming a pattern of the first touch electrode on the other surface of the opposite substrate opposite to the side of the black matrix by the patterning process; the first touch electrode is disposed in a corresponding region of the black matrix; the first touch electrode
  • the method includes a plurality of first touch sub-electrodes distributed along the first direction, and performing wire inspection and repair on the first touch electrodes, as shown in FIG. 6a;
  • the patterning process can employ two materials: an opaque conductive material and a transparent conductive material.
  • a pattern of the first touch electrodes located in corresponding regions of the black matrix pattern is formed; for example, the opposite side of the black matrix 4 on the opposite substrate 1 may be
  • One layer of ITO film is coated on one side, and then exposed, developed and etched to form strips distributed along the first direction
  • the first touch sub-electrode 51, and the position of the first touch sub-electrode 51 corresponds to the position of the black matrix 4; then the wire detection is performed on the first touch electrode 5 including the plurality of first touch sub-electrodes 51 And repair, if there is a broken line, repair it;
  • Step 3 forming a pattern of the insulating layer on the first touch electrode, as shown in FIG. 6b;
  • an organic material film layer (for example, a PMMA film layer) may be deposited on the first touch electrode 5 as an insulating layer 6 for performing sputtering on the first touch electrode and the second touch electrode. insulation;
  • Step 4 applying a box process to the opposite substrate and the array substrate, as shown in FIG. 6c;
  • the opposite substrate 1 and the array substrate 2 are transferred to a Cell process and prepared to complete the process of the cartridge;
  • Step 5 forming a pattern of the second touch electrode on the insulating layer by using a nano conductive ink process; the second touch electrode is located in a corresponding region of the black matrix; and the second touch electrode includes a second surface perpendicular to the first direction a plurality of second touch sub-electrodes distributed in a direction; and performing wire inspection and repair on the second touch electrodes, as shown in FIG. 6d;
  • a layer of conductive ink is coated on the insulating layer 6 and heated to 120 ° C - 160 ° C, so that the nano conductive ink is cured to form a plurality of second touches in a second direction perpendicular to the first direction.
  • Sub-electrode 71 the second touch electrode 7 including the plurality of second touch sub-electrodes 71 is subjected to wire inspection and repair, and repaired if there is a wire break.
  • the touch display provided by the present disclosure can be fabricated by the steps 1 to 5 provided above.
  • An embodiment of the present disclosure further provides a display device, including any of the touch display screens provided above, which may be: a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, or the like. Any product or part that has a display function.
  • the other components of the display device are generally used in the art, and are not described herein, nor should they be construed as limiting the disclosure.
  • the display device can be implemented by referring to the embodiment of the touch display screen described above, and the repeated description is omitted.
  • Embodiments of the present disclosure provide a touch display screen, a method of fabricating the same, and a display device.
  • the touch display screen includes: a facing substrate, an array substrate, and a liquid crystal layer between the opposite substrate and the array substrate, the opposite substrate has a black matrix facing the liquid crystal layer, and the touch display screen further includes: The first touch electrode, the insulating layer, and the second touch electrode are disposed on the back side of the liquid crystal layer, wherein the first touch electrode and the second touch electrode are respectively located in corresponding areas of the black matrix, first The touch electrode includes the first direction a plurality of first touch sub-electrodes distributed; the second touch electrodes include a plurality of second touch sub-electrodes distributed along a second direction perpendicular to the first direction.
  • the first touch electrode and the second touch electrode disposed in the touch display screen are respectively located in corresponding areas of the black matrix, and it can also be understood that they are respectively located in the area covered by the pattern of the black matrix. In this way, light reflection and light absorption can be reduced, and the emitted light is not greatly affected, and the transmittance of the emitted light is improved.
  • the touch system including the first touch electrode and the second touch electrode is directly disposed on a side of the opposite substrate facing away from the liquid crystal layer, the touch system and the opposite substrate can be seamlessly bonded, thereby improving the touch system. Fit accuracy and product yield.

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Abstract

一种触摸显示屏、制作方法及显示装置。所述触摸显示屏包括：对向基板（1），阵列基板（2），以及位于对向基板（1）和阵列基板（2）之间的液晶层（3），对向基板（1）面向液晶层（3）的一面具有黑矩阵（4），所述触摸显示屏还包括：在对向基板（1）背向液晶层（3）的一面依次层叠设置的第一触控电极（5）、绝缘层（6）以及第二触控电极（7）；其中，第一触控电极（5）和第二触控电极（7）分别位于黑矩阵（4）相对应的区域内；第一触控电极（5）包括沿第一方向分布的多条第一触控子电极（51），第二触控电极（7）包括沿与第一方向垂直的第二方向分布的多条第二触控子电极（71）。由于第一触控电极（5）和第二触控电极（7）分别位于对向基板（1）背向液晶层（3）的一面且分别位于黑矩阵（4）相对应的区域内，因此既可以降低光反射及光吸收，提高光的透过率，又可以提高贴合精度及产品良率。

Description

一种触摸显示屏、其制作方法及显示装置 技术领域
本公开涉及显示技术领域，尤其涉及一种触摸显示屏、其制作方法及显示装置。
背景技术
随着显示技术的飞速发展，触摸屏(Touch Screen Panel)已经在人们的生活中逐渐普及。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)。
目前，外挂式触摸屏是通过将触摸屏与液晶显示屏分开生产，然后贴合到一起而构成的具有触摸功能的液晶显示屏。一个完整的外挂式触摸屏的完成需要初级产品多次周转及二次或者多次加工，且制作过程较为繁琐。因此，除了整体上周转成本及加工成本均较高外，由于触摸屏与液晶显示屏不是一体的，在特定的生产线上对两者进行贴合时，存在精度问题。并且，在触摸屏中，通常采用氧化铟锡(Indium Tin Oxides，ITO)作为触控驱动电极和触控感应电极的材料并且将其制备在保护玻璃上，以这种方式，虽然可以利用ITO的透明性，不考虑其走线位置，但实际上ITO会对来自液晶显示屏的出射光造成吸收和反射，出现光反射率高，透过率低的问题。另外，由于液晶显示屏与保护玻璃之间存在的空气间隙以及玻璃材质的影响，光的透射率会被降低，而且使用保护玻璃也会增加产品的厚度、质量与使用成本。
发明内容
本公开提供了一种触摸显示屏、其制作方法及显示装置，可以提高光的透过率，贴合精度及产品良率。
根据本公开的一个方面，提供了一种触摸显示屏，包括：对向基板，阵列基板，以及位于所述对向基板和所述阵列基板之间的液晶层，所述对向基板面向所述液晶层的一面具有黑矩阵，所述触摸显示屏还包括：
在所述对向基板背向所述液晶层的一面依次层叠设置的第一触控 电极、绝缘层以及第二触控电极；其中，
所述第一触控电极位于所述黑矩阵相对应的区域内；所述第一触控电极包括沿第一方向分布的多条第一触控子电极；
所述第二触控电极位于所述黑矩阵相对应的区域内；所述第二触控电极包括沿与所述第一方向垂直的第二方向分布的多条第二触控子电极。
可选地，所述触摸显示屏还包括：位于所述第二触控电极上方的偏光片。
可选地，在所述触摸显示屏中，每条所述第一触控子电极和/或第二触控子电极的线宽小于或等于所述黑矩阵的线宽。
可选地，在所述触摸显示屏中，每条所述第一触控子电极和/或第二触控子电极的线宽为5微米至20微米。
可选地，所述触摸显示屏还包括：位于所述偏光片与所述第二触控电极之间的保护层。所述保护层的材料可以为PET，PMMA或偏光膜材料。
可选地，在所述触摸显示屏中，所述第一触控电极为触控驱动电极，所述第二触控电极为触控感应电极；或，所述第一触控电极为触控感应电极，所述第二触控电极为触控驱动电极。
可选地，在所述触摸显示屏中，所述第一触控电极的材料为透明导电氧化物或金属材料；和/或，所述第二触控电极的材料为纳米导电油墨材料。
根据本公开的另一方面，提供了一种触摸显示屏的制作方法，包括：分别形成具有黑矩阵的对向基板的图形和阵列基板的图形，对所述对向基板与阵列基板应用对盒工艺，所述制作方法还包括：
在应用对盒工艺之前：
通过构图工艺在所述对向基板的与黑矩阵所在一面相对的另一面形成第一触控电极的图形；所述第一触控电极设置在所述黑矩阵相对应的区域；所述第一触控电极包括沿第一方向分布的多条第一触控子电极；
在所述第一触控电极上形成绝缘层的图形；以及
在应用对盒工艺之后：
通过纳米导电油墨工艺在所述绝缘层上形成第二触控电极的图 形；所述第二触控电极位于所述黑矩阵相对应的区域内；所述第二触控电极包括沿与所述第一方向垂直的第二方向分布的多条第二触控子电极。
可选地，所述制作方法还包括：在形成所述第二触控电极的图形之后，在所述第二触控电极上形成偏光片的图形。
可选地，所述制作方法还包括：在形成所述第二触控电极的图形之后并且在形成所述偏光片的图形之前，在所述第二触控电极上形成保护层的图形。
根据本公开的又一方面，还提供了一种显示装置，其包括上面所述的任一触摸显示屏。
由于在触摸显示屏中设置的第一触控电极和第二触控电极分别位于对向基板背向液晶层一面且分别位于黑矩阵相对应的区域内，因此既可以降低光反射及光吸收，提高光的透过率，又可以提高贴合精度及产品良率。
附图说明
图1为根据本公开的一个实施例的触摸显示屏的结构示意图；
图2为根据本公开的一个实施例的触摸显示屏的俯视图；
图3为根据本公开的另一实施例的触摸显示屏的结构示意图；
图4为根据本公开的又一实施例的触摸显示屏的结构示意图；
图5为根据本公开的实施例的触摸显示屏的制作方法的流程图；
图6a至图6d分别为根据本公开的实施例的触摸显示屏的制作方法在各步骤执行后的结构示意图。
具体实施方式
下面结合附图，对本公开的实施例提供的触摸显示屏、其制作方法及显示装置的具体实施方式进行详细地说明。
其中，附图中各膜层的厚度和形状不反映触摸显示屏的真实比例，目的只是示意说明本公开内容。
本公开的实施例提供了一种触摸显示屏，如图1和图2所示，其包括：对向基板1，阵列基板2，以及位于对向基板1和阵列基板2之间的液晶层3，对向基板1面向液晶层3的一面具有黑矩阵4，所述触 摸显示屏还包括：
在对向基板1背向液晶层3的一面依次层叠设置的第一触控电极5、绝缘层6以及第二触控电极7；其中，
第一触控电极5位于黑矩阵4相对应的区域内；第一触控电极5包括沿第一方向分布的多条第一触控子电极51(图2中仅标注了三条第一触控子电极，其它竖直方向分布的也都是第一触控子电极)；
第二触控电极7位于黑矩阵4相对应的区域内；第二触控电极7包括沿与第一方向垂直的第二方向分布的多条第二触控子电极71(图2中仅标注了三条第二触控子电极，其它水平方向分布的也都是第二触控子电极)。
需要说明的是，图2中第一方向和第二方向分别为竖直方向和水平方向，但这只是为了说明本公开所示的一个个例，在具体实施过程中，第一方向和第二方向并不限于图2所示的竖直方向和水平方向。
在所述触摸显示屏中，在触摸显示屏中设置的条状的第一触控电极和第二触控电极分别位于黑矩阵相对应的区域内，也可以理解为，其分别位于黑矩阵的图形所覆盖的区域内，由此可以降低光反射及光吸收，不会对出射光造成很大的影响，提高了出射光的透过率。另外，由于包括第一触控电极和第二触控电极的触控系统直接设置在对向基板背向液晶层的一面，所以触控系统与对向基板可以无缝隙贴合，进而提高了贴合精度以及产品良率。
在另一实施例中，为了使触摸显示屏可以成像，如图3所示，所述触摸显示屏还可以包括：位于第二触控电极7上方的偏光片8。由于设置有偏光片，无需在触摸显示屏上外置保护玻璃，从而简化了膜层数量，进而减少了产品厚度、产品重量及产品成本；同时，将整个触控系统直接置于对向基板与偏光片之间，可以保护整个触控系统。
在实施例中，由于每条第一触控子电极和第二触控子电极分别位于黑矩阵相对应的区域内，因此，如图2所示，每条第一触控子电极51和/或第二触控子电极71的线宽可以小于或等于黑矩阵4的线宽，这可以进一步降低触控系统对透过率的影响。当然，每条第一触控子电极和/或第二触控子电极的线宽也可以略大于黑矩阵的线宽，只要不影响出射光的透过率即可，在此不作限定。应当理解，可以根据触控精度的要求来设置第一触控电极和第二触控电极的分布位置和分布密 度。
在实施例中，由于一般黑矩阵的线宽大约为5微米至20微米，因此，为了保证每条第一触控子电极和/或第二触控子电极的线宽不大于黑矩阵的线宽，可以将每条第一触控子电极和/或第二触控子电极的线宽具体设置为5微米至20微米。应当理解，对于每条第一触控子电极和/或第二触控子电极的线宽可以根据实际情况进行设置，在此不作限定。
在另一实施例中，如图4所示，触摸显示屏还可以包括：位于偏光片8与第二触控电极7之间的保护层9，该保护层9起均匀和平坦化的作用及保护第二触控电极的作用。具体地，该保护层9的材料可以为PET、PMMA或偏光膜材料其中之一，这些材料均为有机材料，因此保护层可以和偏光片紧密无狭缝地贴合，导致贴合精度高、无需二次贴合、基本不会对光透过率造成影响，并且相对于现有的触控技术可以提高大于10％的透过率。对于保护层的具体材料，可以根据具体情况进行设置，在此不作限定。
作为示例，在所述触摸显示屏中，第一触控电极可以为触控驱动电极，第二触控电极可以为触控感应电极；或，第一触控电极可以为触控感应电极，第二触控电极可以为触控驱动电极，在此不做限定。
在所述触摸显示屏中，由于第一触控电极位于黑矩阵相对应的区域内，不会出现遮挡显示光线的情况，因此，第一触控电极的材料可以具体为透明导电氧化物(例如ITO或IZO)，或者也可以具体为金属材料。当采用金属材料制作第一触控电极时，可以有效地降低其电阻。所述材料还可以具体为碳纳米管、石墨烯等透明导电材料。在常规的液晶面板生产过程中，为了防止静电，一般会在对向基板外侧玻璃上整面镀一层ITO，但是这样会影响光的透过率。在本公开的触摸显示屏中，不需要常规的ITO导电膜，而是将ITO膜层直接形成第一触控电极；具体地，为了增加这层ITO的利用功能，以及提高光的透过率，可以将ITO分割成条状，制备在对向基板的黑矩阵相对应的区域，作为第一触控电极。以这种方式，由于使用现成的ITO工艺，可以减少纳米导电油墨工艺的使用，减少工序，减少成本。此外，绝缘层的材料一般为硬度较大的PMMA或者其它绝缘好、硬度大的有机膜，第二触控电极的材料可以具体为纳米导电油墨材料(例如，粒径小于50nm 的纳米银导电油墨或者其它高导电率导电油墨)，在此不作限定。
应当指出，所述触摸显示屏可以适用于各种模式的液晶显示面板，例如可以适用于能够实现宽视角的平面内开关(IPS，In-Plane Switch)和高级超维场开关(ADS，Advanced Super Dimension Switch)型液晶显示面板，也可以适用于传统的扭曲向列(TN，Twisted Nematic)型液晶显示面板，在此不作限定。
作为示例，在本公开的实施例中提供的触摸显示屏中，一般在对向基板中还可以具有诸如彩膜层、公共电极层、像素电极层等其它膜层结构，以及在阵列基板中还可以形成有薄膜晶体管、栅线、数据线等结构，这些具体结构可以有多种实现方式，在此不做限定。
本公开的实施例还提供了一种触摸显示屏的制作方法，由于该方法解决问题的原理与前述触摸显示屏相似，因此该方法的实施可以参见触摸显示屏的实施，重复之处不再赘述。
作为示例，如图5所示，本公开的实施例提供的触摸显示屏的制作方法具体包括以下步骤：
S501：分别形成具有黑矩阵的对向基板的图形和阵列基板的图形；
S502：通过构图工艺在对向基板的与黑矩阵所在一面相对的另一面形成第一触控电极的图形；第一触控电极设置在所述黑矩阵相对应的区域；第一触控电极包括沿第一方向分布的多条第一触控子电极；
S503：在第一触控电极上形成绝缘层的图形；
S504：对所述对向基板与阵列基板应用对盒工艺；
S505：通过纳米导电油墨工艺在绝缘层上形成第二触控电极的图形；第二触控电极位于黑矩阵相对应的区域内；第二触控电极包括沿与第一方向垂直的第二方向分布的多条第二触控子电极。
需要说明的是，在一个实施例中，可以在步骤S504处对所述对向基板与阵列基板应用对盒工艺之后，再将未切割的产品基材直接运输到纳米触控膜生产线上进行第二触控电极的制备。这样，在形成第二触控电极的图形之前应用对盒工艺，操作方便，工艺简化，可以提高生产效率。
在一个实施例中，所述方法还可以包括：在步骤S502处形成第一触控电极或在步骤S505处形成第二触控电极的图形之后，对第一触控电极或第二触控电极进行导线检测及修复。检查是否断线，如有断线 进行修补，这样可以进一步提高产品良率。
本公开的实施例中所述的构图工艺包括光刻胶涂布、掩模、曝光、显影、刻蚀、光刻胶剥离等工艺；所述的纳米导电油墨工艺包括油墨喷涂、3D打印技术等工艺。需要说明的是，在制作工艺中，所采用的导电油墨喷印设备可以由取向液涂覆设备改造或彩膜工艺中的喷涂设备改造，并具有独立的控制程序，其中喷头可以为5μm至20μm，精度误差小于10μm，涂覆导线宽度在5μm至20微米，也可以根据实际需求改变；高温烧结腔室可以利用Cell产线现有的高温腔室；导线检测设备可以采用Array Test电学检测设备，导线修补利用现有的Array Repair修复设备稍微适应性改造即可。相关的切割与偏光片的贴附在现有产线均可完成；还需增加自动电极化处理设备。
在本公开的实施例提供的触摸显示屏的制作方法中，为了不仅省去在触控显示屏上外置的保护玻璃以简化膜层数量，还保护整个触控系统，所述方法还可以包括：在步骤S505处形成第二触控电极的图形之后，在第二触控电极上形成偏光片的图形。
为了保护第二触控电极，本公开的实施例提供的触摸显示屏的制作方法还可以包括：在形成第二触控电极的图形之后，并且在第二触控电极上形成偏光片的图形之前，在第二触控电极上形成保护层的图形。
下面以一个具体的实例详细地说明本公开的实施例提供的触摸显示屏的制作方法，具体步骤如下：
步骤一：分别形成具有黑矩阵的对向基板的图形和阵列基板的图形；
步骤二：通过构图工艺在对向基板的与黑矩阵所在一面相对的另一面形成第一触控电极的图形；第一触控电极设置在所述黑矩阵相对应的区域；第一触控电极包括沿第一方向分布的多条第一触控子电极；并对第一触控电极进行导线检测及修复，如图6a所示；
作为示例，构图工艺可以采用的材料有两种：不透明的导电材料和透明的导电材料。采用上述导电材料，进行曝光、显影和刻蚀处理之后，形成位于黑矩阵图形相对应区域的第一触控电极的图形；例如可以在对向基板1上的与黑矩阵4所在一面相对的另一面镀一层ITO膜，然后经过曝光、显影和刻蚀处理后，形成沿第一方向分布的条状 的第一触控子电极51，且第一触控子电极51的位置与黑矩阵4的位置相对应；然后对包括多条第一触控子电极51的第一触控电极5进行导线检测及修复，如有断线则进行修补；
步骤三：在第一触控电极上形成绝缘层的图形，如图6b所示；
作为示例，可以通过溅射的方式在第一触控电极5上沉积一层有机材料膜层(例如PMMA膜层)作为绝缘层6，用来对第一触控电极和第二触控电极进行绝缘；
步骤四：对所述对向基板与阵列基板应用对盒工艺，如图6c所示；
作为示例，将对向基板1与阵列基板2传送到Cell工艺并进行制备，以完成对盒工艺；
步骤五：通过纳米导电油墨工艺在绝缘层上形成第二触控电极的图形；第二触控电极位于黑矩阵相对应的区域内；第二触控电极包括沿与第一方向垂直的第二方向分布的多条第二触控子电极；并对第二触控电极进行导线检测及修复，如图6d所示；
作为示例，在绝缘层6上涂覆一层导电油墨，并且将其加热至120℃-160℃，使得纳米导电油墨固化，形成多条沿与第一方向垂直的第二方向的第二触控子电极71。然后，对包括多条第二触控子电极71的第二触控电极7进行导线检测及修复，如有断线则进行修补。
通过上面提供的步骤一至五可以制作出本公开所提供的触摸显示屏。
本公开的实施例还提供了一种显示装置，包括上面提供的任一触摸显示屏，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、导航仪等上的任何具有显示功能的产品或部件。该显示装置的其它组成部分均可以是本领域所常用的，在此不做赘述，也不应作为对本公开的限制。该显示装置可以参见上述触摸显示屏的实施例被实施，重复之处不再赘述。
本公开的实施例提供了一种触摸显示屏、其制作方法及显示装置。所述触摸显示屏包括：对向基板，阵列基板，以及位于对向基板和阵列基板之间的液晶层，对向基板面向液晶层一面具有黑矩阵，所述触摸显示屏还包括：在对向基板背向液晶层的一面依次层叠设置的第一触控电极、绝缘层以及第二触控电极；其中，第一触控电极和第二触控电极分别位于黑矩阵相对应的区域，第一触控电极包括沿第一方向 分布的多条第一触控子电极；第二触控电极包括沿与第一方向垂直的第二方向分布的多条第二触控子电极。在触摸显示屏中设置的第一触控电极和第二触控电极分别位于黑矩阵相对应的区域内，也可以理解为，其分别位于黑矩阵的图形所覆盖的区域内。这样，可以降低光反射及光吸收，不会对出射光造成很大的影响，提高了出射光的透过率。另外，由于包括第一触控电极和第二触控电极的触控系统直接设置在对向基板背向液晶层的一面，因此触控系统与对向基板可以无缝隙地贴合，进而提高了贴合精度以及产品良率。
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。

Claims (12)

  1. 一种触摸显示屏，包括：对向基板，阵列基板，以及位于所述对向基板和所述阵列基板之间的液晶层，所述对向基板面向所述液晶层的一面具有黑矩阵，其中，触摸显示屏还包括：
    在所述对向基板背向所述液晶层的一面依次层叠设置的第一触控电极、绝缘层以及第二触控电极；其中，
    所述第一触控电极位于所述黑矩阵相对应的区域内；所述第一触控电极包括沿第一方向分布的多条第一触控子电极；
    所述第二触控电极位于所述黑矩阵相对应的区域内；所述第二触控电极包括沿与所述第一方向垂直的第二方向分布的多条第二触控子电极。
  2. 如权利要求1所述的触摸显示屏，还包括：位于所述第二触控电极上方的偏光片。
  3. 如权利要求1所述的触摸显示屏，其中，每条所述第一触控子电极和/或第二触控子电极的线宽小于或等于所述黑矩阵的线宽。
  4. 如权利要求3所述的触摸显示屏，其中，每条所述第一触控子电极和/或第二触控子电极的线宽为5微米至20微米。
  5. 如权利要求2所述的触摸显示屏，还包括：位于所述偏光片与所述第二触控电极之间的保护层。
  6. 如权利要求1-5的任一项所述的触摸显示屏，其中，所述第一触控电极为触控驱动电极，所述第二触控电极为触控感应电极；或，所述第一触控电极为触控感应电极，所述第二触控电极为触控驱动电极。
  7. 如权利要求1-5任一项所述的触摸显示屏，其中，所述第一触控电极的材料为透明导电氧化物或金属材料；和/或所述第二触控电极的材料为纳米导电油墨材料。
  8. 如权利要求5所述的触摸显示屏，其中所述保护层的材料为PET，PMMA或偏光膜材料。
  9. 一种触摸显示屏的制作方法，包括：分别形成具有黑矩阵的对向基板的图形和阵列基板的图形，对所述对向基板与阵列基板应用对盒工艺，其中，所述制作方法还包括：
    在应用对盒工艺之前，
    -通过构图工艺在所述对向基板与黑矩阵所在一面相对的另一面形成第一触控电极的图形；所述第一触控电极设置在所述黑矩阵相对应的区域；所述第一触控电极包括沿第一方向分布的多条第一触控子电极；
    -在所述第一触控电极上形成绝缘层的图形；
    在应用对盒工艺之后，
    -通过纳米导电油墨工艺在所述绝缘层上形成第二触控电极的图形；所述第二触控电极位于所述黑矩阵相对应的区域内；所述第二触控电极包括沿与所述第一方向垂直的第二方向分布的多条第二触控子电极。
  10. 如权利要求8所述的制作方法，还包括：在形成所述第二触控电极的图形之后，在所述第二触控电极上形成偏光片的图形。
  11. 如权利要求9所述的制作方法，还包括：在形成所述第二触控电极的图形之后并且在形成所述偏光片的图形之前，在所述第二触控电极上形成保护层的图形。
  12. 显示装置，包括如权利要求1-8中的任一项所述的触摸显示屏。
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