WO2021017223A1 - 一种触控屏及其制备方法 - Google Patents

一种触控屏及其制备方法 Download PDF

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Publication number
WO2021017223A1
WO2021017223A1 PCT/CN2019/113927 CN2019113927W WO2021017223A1 WO 2021017223 A1 WO2021017223 A1 WO 2021017223A1 CN 2019113927 W CN2019113927 W CN 2019113927W WO 2021017223 A1 WO2021017223 A1 WO 2021017223A1
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WO
WIPO (PCT)
Prior art keywords
polarizer
touch screen
backlight module
component
array substrate
Prior art date
Application number
PCT/CN2019/113927
Other languages
English (en)
French (fr)
Inventor
郑颖博
Original Assignee
武汉华星光电技术有限公司
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.)
Filing date
Publication date
Application filed by 武汉华星光电技术有限公司 filed Critical 武汉华星光电技术有限公司
Priority to US16/631,179 priority Critical patent/US10976850B2/en
Publication of WO2021017223A1 publication Critical patent/WO2021017223A1/zh

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Classifications

    • 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
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0273—Diffusing elements; Afocal elements characterized by the use
    • G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0025—Diffusing sheet or layer; Prismatic sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/003—Lens or lenticular sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133331—Cover glasses
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • G02F1/133536—Reflective polarizers
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133605—Direct backlight including specially adapted reflectors
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/009—Positioning aspects of the light source in the package
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
    • G—PHYSICS
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    • 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 invention relates to the field of display, in particular to a touch screen and a preparation method thereof.
  • the existing touch screen has a variety of structural design solutions, one of which is a G+G structure, that is, a glass cover is used to bond the glass function sheet, and the touch screen using this structure will have two layers of glass material.
  • the effect must be thick and heavy, not suitable for thin and light products; then the GFF structure appeared, that is, the use of thin film functional films instead of glass functional films, which is better than glass to solve the problem of light and thinness; there is also a functional film made on the glass cover
  • the OGS structure has advantages in thickness, but the experience performance and strength performance are difficult to achieve the performance of the cover glass, which is not as good as the GFF structure; at the same time, there are single-layer solutions such as GFM (single-layer multi-point solution)
  • GFM single-layer multi-point solution
  • the touch screen structure of both GF and GF is lacking; the touch screen structure that is more popular in high-end mobile phones is the ON-cell and IN-cell structure, which can effectively reduce the thickness and increase the thickness compared with
  • the touch screen of ON-cell and IN-cell structure includes a backlight module, a first polarizer 111, an array substrate 121, a color film substrate 112, a second polarizer 111, a frame sealant 202, and glass ⁇ 201 ⁇ Cover 201.
  • the display panel is mainly composed of an array substrate and a color filter substrate to achieve a display effect.
  • the bonding process between the glass cover and the display panel is limited and the materials used are also limited, which in turn leads to the limitation of the overall thickness of the touch screen.
  • the overall thickness of the touch screen can only be greater than or equal to 1.65mm.
  • the thickness of the glass cover is 0.55 mm; the thickness of the sealant is 0.1 mm; the thickness of the display panel is 0.4 mm; the thickness of the backlight module is 0.61 mm. If the user wants to reduce the weight of the touch screen itself by further compressing the thickness of any part of the touch screen, it is easy to cause various disadvantages of the touch screen. For example, if the thickness of the glass cover is compressed from 0.55mm to 0.4mm, after the glass cover is attached to the display panel, it is easy to cause unfavorable phenomena such as surface macula and stress marks due to uneven stress, and the overall touch screen Increased warpage tolerance.
  • the thickness of the frame sealant is compressed, bubbles will be generated during the process of attaching the glass cover plate to the display panel, resulting in poor adhesion and failure to achieve mass production. If the thickness of the display panel is compressed, it is easy to cause the cell fragmentation rate to rise sharply, and the display area is prone to unevenness, color difference (Mura) and other undesirable phenomena. If the thickness of the array substrate is compressed, the light efficiency will decrease, the brightness of the touch screen will be damaged, and the power consumption will increase. Therefore, compressing any part of the touch screen will cause the overall performance of the touch screen to be poor, which in turn leads to a decrease in the yield of the touch screen.
  • the purpose of the present invention is to provide a touch screen and a preparation method thereof to solve the problem that the overall thickness of the touch screen in the prior art is large.
  • macula, stress marks, and warpage are likely to occur
  • Technical problems such as increased tolerance, poor fit, chromatic aberration, etc., poor overall performance, and decreased yield of touch screens.
  • the present invention provides a touch screen, including a backlight module, a first assembly and a second assembly, the first assembly is arranged on a surface of one side of the backlight module; the second assembly is arranged On the surface of the first component on the side away from the backlight module; wherein, the first component includes a first polarizer and a color filter substrate; the first polarizer is provided on the side of the backlight module The color filter substrate is provided on the surface of the first polarizer away from the backlight module; the second component includes an array substrate and a second polarizer; the array substrate is provided on the The color film substrate is away from the surface of the backlight module; the second polarizer is arranged on the surface of the array substrate away from the backlight module.
  • the backlight module includes a reflective sheet, a light guide plate, a first prism sheet, a diffusion sheet, and a second prism sheet;
  • the light guide plate is provided on a surface on one side of the reflective sheet;
  • the first prism sheet is provided On the surface of the light guide plate on the side far from the reflection sheet;
  • the diffusion sheet is provided on the surface of the first prism sheet on the side far away from the reflection sheet;
  • the length of the color filter substrate is less than the length of the array substrate; the width of the color filter substrate is less than the width of the array substrate.
  • the touch screen further includes a bottom plate, a conductive layer, and an IC drive circuit unit;
  • the reflective sheet is mounted on a surface on one side of the bottom plate; one end of the conductive layer is attached to one side of the array substrate The other end of the surface is connected to the other side surface of the bottom plate;
  • the IC drive circuit unit is mounted on the other side surface of the bottom plate and is electrically connected to the conductive layer.
  • the material of the conductive layer is molybdenum oxide.
  • the first polarizer is a multilayer reflective polarizer; the second polarizer is a hardened coating polarizer.
  • the thickness of the array substrate is 0.35 mm to 0.45 mm; the thickness of the color filter substrate is 0.095 mm to 0.11 mm; the thickness of the second polarizer is 0.20 mm to 0.22 mm.
  • the longitudinal section of the second component is quadrilateral, including a long side and a short side, and the longitudinal section of the second component includes a circular arc portion, which is arranged at the junction of a long side and a short side.
  • the present invention also provides a method for preparing a touch screen, which includes the following steps: a backlight module preparation step, a backlight module is prepared; a first component preparation step, a method is prepared on the upper surface of the backlight module A first component; and a second component preparation step, a second component is prepared on the upper surface of the first component; wherein, the first component preparation step includes the following steps: a first polarizer preparation step, in the backlight A first polarizer is prepared on the upper surface of the module; and a color filter substrate is prepared on the upper surface of the first polarizer; wherein the second component preparation step includes the following steps, an array substrate preparation step, An array substrate is prepared on the upper surface of the color filter substrate; and a second polarizer preparation step is to prepare a second polarizer on the upper surface of the array substrate.
  • the second component is polished and ground, so that the corners of the longitudinal section of the second component are provided with arcs.
  • the technical effect of the present invention is to provide a touch screen and a preparation method thereof, in which the color filter substrate and the array substrate are inverted, that is, the array substrate is arranged on the upper surface of the color filter substrate, and the prior art glass cover and sealing frame are removed Glue, replacing the glass cover in the prior art with an array substrate, the size of the array substrate is the same as the size of the glass cover in the prior art, which reduces the overall thickness of the touch screen while ensuring the touch screen The overall performance ensures that the yield rate of the touch screen will not decrease.
  • FIG. 1 is a schematic diagram of the structure of the touch screen in the prior art
  • FIG. 2 is a schematic diagram of the structure of the touch screen according to this embodiment.
  • FIG. 3 is a cross-sectional view of the touch screen according to this embodiment.
  • Figure 5 is a flow chart of the preparation steps of the first component of this embodiment
  • Fig. 6 is a flow chart of the preparation steps of the second component of this embodiment.
  • This embodiment provides a touch screen including a display module, a backlight module, a binding area, and a middle frame of the whole machine.
  • the display module, the backlight module, and the binding area are all set in the In the middle frame of the whole machine, the display module is arranged on the upper surface of the backlight module.
  • the display module includes a first component 11 and a second component 12, and the second component 12 is provided on the upper surface of the first component 11.
  • the first assembly 11 includes a first polarizer 111 and a color filter substrate 112, and the color filter substrate 112 is attached to the upper surface of the first polarizer 111.
  • the first polarizer 111 is a multilayer film reflective polarizer, and the multilayer film is usually bonded with an absorption polarizer, which can significantly improve the backlight utilization rate of the display module.
  • the color film substrate 112 includes a color filter layer, which converts the white light emitted by the light source into monochromatic light such as red, green, and blue, respectively, so as to realize color display.
  • the thickness of the color filter substrate 112 is 0.095 mm to 0.11 mm, and the thickness is preferably 0.1 mm. However, the thickness of the color filter substrate in the prior art is generally greater than 0.125 mm. Therefore, the color filter substrate in this embodiment is lighter and thinner than the color filter substrate in the prior art.
  • the second assembly 12 includes an array substrate 121 and a second polarizer 122, and the second polarizer 122 is attached to the upper surface of the array substrate 121.
  • the array substrate 121 includes multiple layer structures such as a gate layer, a gate insulating layer, an active layer, a passivation layer, and a source and drain layer.
  • the thickness of the array substrate 121 is 0.35 mm to 0.45 mm, and the thickness thereof is preferably 0.4 mm or 0.41 mm.
  • the array substrate 121 in this embodiment is used to replace the glass substrate in the prior art, which can make the touch screen lighter and thinner.
  • the thickness of the second polarizer 122 is 0.20 mm to 0.22 mm, and the thickness is preferably 0.211 mm or 0.215 mm.
  • the second polarizer 122 is a hard-coated polarizer that has undergone a hard-coating treatment, which can ensure the hardness of the surface 8H, thereby ensuring the hardness of the touch screen.
  • the length of the array substrate 121 corresponds to the length of the second polarizer 122 to ensure that the second polarizer 122 completely covers the array substrate 121.
  • the longitudinal section of the second component 12 is quadrilateral, including a long side 1211 and a short side 1212. Since the second component 12 includes the array substrate 121 and the second polarizer 1212, the long side 1121 is the long side of the second polarizer 1212, and the short side 1212 is the sum of the two short sides of the array substrate 121 and the second polarizer 122.
  • the longitudinal cross-section of the second component 12 further includes an arc part 100, which is provided at the junction of a long side 1211 and a short side 1212, and extends from the second polarizer 122 to the array substrate 121.
  • the radius of the arc part 100 is 0.13mm ⁇ 0.16mm, and the radius is preferably 0.15mm, which can make the edge of the display module more smooth and prevent the risk of broken screen.
  • the arc part 100 may only be provided at the corner of the second polarizer 122 (that is, equivalent to the junction of the long side 1211 and the short side 1212 of the second polarizer 122), as long as the display module can be made
  • the edge of the group can be smoother.
  • the length of the color filter substrate 112 is less than the length of the array substrate 111; the width of the color filter substrate 112 is less than the width of the array substrate 111.
  • the array substrate 111 replaces the glass substrate in the prior art to prevent the occurrence of defects such as maculas and stress marks. This phenomenon ensures the yield rate of the touch screen and the overall performance of the touch screen.
  • the backlight module includes a reflective sheet 21, a light guide plate 22, a first prism sheet 23, a diffusion sheet 24, a second prism sheet 25, and a light-shielding glue 26 in order from bottom to top, refer to FIG. 2.
  • the reflection sheet 21 is used to reflect light, and has good light reflection performance.
  • the light guide plate 22 uses an optical grade acrylic sheet to absorb the light emitted from the lamp and stays on the surface of the optical grade acrylic sheet. When the light hits each light guide point, the reflected light will diffuse at all angles, and then destroy the reflection conditions. From the front of the light guide plate The light guide plate can emit light evenly through a variety of dense and different light guide points.
  • the first prism sheet 23 can enhance the brightness of the touch screen.
  • the diffusion sheet 24 can provide a uniform surface light source for the touch screen.
  • the second prism sheet 25 is attached to the lower surface of the first polarizer 111 through the light-shielding glue 26, which can also enhance the brightness of the touch screen.
  • the lighting effect of the backlight module 112 will directly affect the visual effect of the touch screen.
  • the backlight module further includes a backlight source 27, a double-sided adhesive layer 28, a light source driving circuit 29 and a frame 20, refer to FIG. 2.
  • the backlight source 27 has the characteristics of high brightness, long life, uniform light emission, etc.
  • the backlight source 27 provides a light source for the backlight module 2 and is arranged on the left side of the light guide plate 22 and on the lower surface of the double-sided adhesive layer 28.
  • the lower surface of the light source driving circuit 29 is connected to the upper surface of the double-sided adhesive layer 28, the upper surface of the light source driving circuit 29 is connected to the lower surface of the light-shielding adhesive 26, and the light source driving circuit 29 drives the backlight source to emit light, thereby affecting the touch screen Visual effect.
  • a frame 20 is provided in the backlight source 2, which is arranged between the reflective sheet 21 and the double-sided adhesive layer 28 to support the components above the double-sided adhesive layer 28 and to ensure that more light sources illuminate the light guide plate 22.
  • the bonding area includes a conductive layer 31 and an IC driving circuit unit 32, refer to FIG. 2.
  • the conductive layer 31 includes a chip on film (COF) and a flexible printed circuit board (Flexible Printed Circuit, FPC), the flip chip film is attached to the flexible circuit board.
  • COF chip on film
  • FPC Flexible Printed Circuit
  • the conductive layer 31 is made of molybdenum oxide, which has good uniformity on the surface of the glass and has a high reflectivity in the visible light range, which can solve the technical problem of light reflection of the conductive layer in the display module and ensure that the touch screen has good performance The display effect.
  • the middle frame of the whole machine includes two side plates 41 and a bottom plate 42 arranged opposite to each other, refer to FIG. 2.
  • the right-angled portion includes a side edge and a bottom edge, and the side edge is attached to the first side through an adhesive layer.
  • the bottom plate is attached to a part of the bottom edge of the array substrate through frame glue.
  • the bottom plate 42 is arranged between the two side plates 41 and is perpendicular to the side 42, and the reflection sheet 21 is installed on the upper surface of the bottom plate 42.
  • One end of the conductive layer 31 is attached to the lower surface of the array substrate 121, and the other end is connected to the lower surface of the bottom plate 42.
  • the middle of the conductive layer 31 needs to bear stress, so that the connection between the conductive layer 31 and the array substrate 121 is easily damaged.
  • the middle of the conductive layer 31 forms an arc-shaped curved surface, and the conductive layer 31 is relatively thin, has good flexibility, and can withstand sufficient stress. Therefore, during the bending process of the conductive layer 31, the connection between the conductive layer 31 and the array substrate 121 is not easily damaged.
  • the IC driving circuit unit 32 is mounted on the lower surface of the bottom plate 31, the bottom plate 31 is provided with a through hole, and the conductive layer 31 passes through the through hole and is connected to the bottom surface of the bottom plate 42 and is electrically connected to the IC drive circuit unit 32.
  • the conductive layer 31 and the IC drive circuit unit 32 in the bonding area 3 are subjected to structural inversion processing, so that when the lines of the bonding area 3 are bent, the conductive layer 31 and the array substrate 121 are not The connection point is not easy to be damaged, ensuring the yield rate of the touch screen.
  • the light emitted by the backlight is reflected to the first prism sheet via the light guide plate.
  • the first prism sheet enhances the brightness of the light and acts on the diffuser, so that the diffuser provides a uniformity for the second prism sheet.
  • the second prism sheet further enhances the intensity of the light and reflects the light to the first polarizer.
  • the color filter substrate receives the light reflected by the first polarizer, and when the color filter substrate is combined with the array substrate, the upper surface of the second polarizer realizes the display effect. Compared with the prior art, the display effect of this embodiment remains unchanged.
  • the prior art touch screen includes a glass cover to protect the upper polarizer, but it will cause a certain touch delay.
  • the glass cover and the frame sealing glue in the prior art are removed, and the user can directly input touch commands on the second polarizer without being affected by the glass cover, and the touch is more sensitive without delay.
  • the thickness of the second polarizer is adjusted from 0.074 mm to 0.215 mm, the physical strength is increased nearly three times, therefore, the second polarizer is not easy to be damaged, without the protection of the glass cover.
  • the overall thickness of the touch screen is generally 1.722mm, in which the thickness of the glass cover is 0.55mm, the thickness of the sealant is 0.1mm, the thickness of the upper polarizer is 0.074mm, and the thickness of the color film substrate
  • the thickness of the array substrate is 0.125 mm
  • the thickness of the lower polarizer is 0.071 mm
  • the thickness of the backlight module is 0.677 mm.
  • the thickness of the touch screen is preferably 1.463 mm
  • the thickness of the second polarizer (equivalent to the upper polarizer in the prior art) is 0.215.
  • this embodiment uses the color filter substrate and the array substrate inverted design, that is, the array substrate is arranged on the upper surface of the color filter substrate, which reduces the overall thickness of the touch screen. While ensuring the overall performance of the touch screen, it further ensures the touch The screen yield rate will not decrease.
  • this embodiment removes the glass cover plate and the frame sealant in the prior art, and thickens the thickness of the array substrate and the second polarizer, and the thickness of the first polarizer and the backlight module remain unchanged.
  • the physical intensity of the array substrate, the backlight module, and the two polarizers remains unchanged or becomes larger. Therefore, this embodiment can ensure or improve the yield of the touch screen.
  • the removal of the glass cover and the frame sealant can prevent the touch screen from appearing yellow spots, stress marks, increased warpage tolerance, poor fit and other undesirable phenomena, so that the touch screen is lighter and thinner, ensuring the overall touch screen The performance also guarantees the yield of the touch screen.
  • the array substrate is used instead of the glass cover, and the length and width of the array substrate are thickened, so that the size of the array substrate is compatible with the size of the glass substrate in the prior art.
  • the thickness of the second polarizer is thickened.
  • the second polarizer is closely attached to the array substrate, the overall hardness of the touch screen is increased, and the touch screen is not damaged when the user directly touches the polarizer.
  • the thickness of the color filter substrate is reduced, thereby reducing the overall thickness of the touch screen, which reduces the thickness and weight of the touch screen while ensuring its performance and yield.
  • this embodiment also provides a method for manufacturing a touch screen, including the following steps S1 to S4.
  • a backlight module is prepared on the upper surface of the bottom plate of the middle frame of a complete machine.
  • the backlight module includes a reflective sheet, a light guide plate, a first prism sheet, a diffusion sheet, a second prism sheet, and light-shielding glue.
  • the reflective sheet, the light guide plate, the first prism sheet, the diffusion sheet, the second prism sheet, and the light shielding glue are sequentially arranged on the upper surface of the bottom plate.
  • the reflecting sheet is used for reflecting light and has good light reflecting performance.
  • the light guide plate uses an optical grade acrylic sheet to absorb the light emitted from the lamp and stays on the surface of the optical grade acrylic sheet.
  • the backlight module further includes a backlight source, a double-sided adhesive layer, a light source driving circuit and a frame, all of which are arranged on the left side of the light guide plate.
  • the double-sided adhesive layer and the light source driving circuit are sequentially arranged on the upper surface of the backlight source.
  • the frame is arranged between the reflective sheet and the double-sided adhesive layer to support the components above the double-sided adhesive layer and ensure that more light sources are irradiated to the light guide plate.
  • the step of preparing the first component of S2 includes the following steps S21 to S22.
  • S21 The first polarizer preparation step, a first polarizer is prepared on the upper surface of the backlight module. Specifically, the first polarizer is prepared on the upper surface of the second prism sheet. The lower surface of the first polarizer is bonded to the second prism sheet through the shading glue.
  • a color filter substrate is prepared on the upper surface of the first polarizer.
  • the preparation step of the second component of S3 includes the following steps S31 to S32.
  • S31 array substrate preparation step an array substrate is prepared on the upper surface of the color filter substrate.
  • a cutting process is performed on an array substrate, so that the size of the array substrate after being cut is the same as that of the glass substrate in the prior art, and can be accommodated by the middle frame of the whole machine.
  • the user polishes and polishes the edge of the array substrate after being cut, so that a first arc is provided at the junction of the long side and the short side of the array substrate, and the radius of the first arc is 0.13 mm ⁇ 0.16mm, and the radius is preferably 0.15mm, which can eliminate the risk of broken screen caused by the cutting cracks at the edge of the array substrate after being cut.
  • a second polarizer is prepared on the upper surface of the array substrate.
  • the second polarizer is a hard-coated polarizer that has undergone a hard-coating treatment, which can ensure the hardness of its surface 8H, thereby ensuring the hardness of the touch screen, and ensuring that the touch screen is not damaged when the user directly touches the polarizer. damage.
  • a second arc is provided at the junction of the long side and the short side of the second polarizer, and the radius of the second arc is the same as the radius of the first arc.
  • the part extends to the second arc part, and the center of the circle is located at the same position, so that the edge of the second component is gentle and closely fits the middle frame of the complete machine.
  • the user can also directly set the arc part on the long side and the short side of the second polarizer, which can ensure that the array substrate, the second polarizer and the edge of the middle frame of the whole machine It fits tightly and ensures that the touch screen will not break during the test of the whole machine.
  • the binding area preparation step is to set a binding area in the touch screen.
  • the bonding area includes a conductive layer and an IC driving circuit unit.
  • One end of the conductive layer is attached to the lower surface of the array substrate, and the other end of the conductive layer is connected to the lower surface of a bottom plate to prevent the conductive layer from being easily damaged by the array substrate during the bending process.
  • the IC drive circuit unit is mounted on the lower surface of the bottom plate, the bottom plate is provided with a through hole, and the conductive layer passes through the through hole and is electrically connected to the IC drive circuit unit.
  • the overall thickness of the touch screen is generally 1.722mm, in which the thickness of the glass cover is 0.55mm, the thickness of the sealant is 0.1mm, the thickness of the upper polarizer is 0.074mm, and the thickness of the color film substrate
  • the thickness of the array substrate is 0.125 mm
  • the thickness of the lower polarizer is 0.071 mm
  • the thickness of the backlight module is 0.677 mm.
  • the thickness of the touch screen is preferably 1.463 mm
  • the thickness of the upper polarizer is 0.215.
  • the thickness of the array substrate is 0.4 mm
  • the thickness of the color filter substrate is 0.1 mm
  • the thickness of the lower polarizer is 0.071 mm
  • the thickness of the backlight module is 0.677 mm.
  • this embodiment removes the glass cover plate and the frame sealant in the prior art, and thickens the thickness of the array substrate and the second polarizer, and the thickness of the first polarizer and the backlight module remain unchanged.
  • the physical intensity of the array substrate, the backlight module, and the two polarizers remains unchanged or becomes larger. Therefore, this embodiment can ensure or improve the yield of the touch screen.
  • the removal of the glass cover and the frame sealant can prevent the touch screen from appearing yellow spots, stress marks, increased warpage tolerance, poor fit and other undesirable phenomena, so that the touch screen is lighter and thinner, ensuring the overall touch screen The performance also guarantees the yield of the touch screen.
  • the array substrate is used instead of the glass cover, and the length and width of the array substrate are thickened, so that the size of the array substrate is compatible with the size of the glass substrate in the prior art.
  • the thickness of the second polarizer is thickened.
  • the second polarizer is closely attached to the array substrate, the overall hardness of the touch screen is increased, and the touch screen is not damaged when the user directly touches the polarizer.
  • the thickness of the color filter substrate is reduced, thereby reducing the overall thickness of the touch screen, which reduces the thickness and weight of the touch screen while ensuring its performance and yield.

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Abstract

一种触控屏及其制备方法，触控屏包括背光模组、第一组件（11）以及第二组件（12），第一组件（11）设于背光模组一侧的表面，第二组件（12）设于第一组件（11）远离背光模组一侧的表面，其中，第一组件（11）包括第一偏光片（111）及彩膜基板（112），第一偏光片（111）设于背光模组一侧的表面，彩膜基板（112）设于第一偏光片（111）远离背光模组一侧的表面，第二组件（12）包括阵列基板（121）及第二偏光片（122），阵列基板（121）设于彩膜基板（112）远离背光模组一侧的表面，第二偏光片（122）设于阵列基板（121）远离背光模组一侧的表面，通过将彩膜基板（112）与阵列基板（121）倒置设计，在减少触控屏整体厚度的同时，保证触控屏的整体性能，保证触控屏的良率不会降低。

Description

一种触控屏及其制备方法 技术领域
本发明涉及显示领域，尤其涉及一种触控屏及其制备方法。
 背景技术
随着手机、平板等电子产品的发展，液晶显示器、触控屏等模组的设计逐渐向尺寸扩大化，重量体积的轻薄化的方向发展。
现有的触控屏具有多种结构的设计方案，其中一种为G+G结构，即使用玻璃盖板贴合玻璃功能片，使用该结构的触控屏就会有两层玻璃材质，整体效果一定是有厚重感，不适合轻薄化产品；随后出现了GFF结构，即使用薄膜功能片替代玻璃的功能片，相对玻璃更好解决轻薄化问题；还有一种将功能片制作在玻璃盖板上，即OGS结构，其厚度上有优势，但体验性能和强度性能很难达到盖板玻璃的性能，没有GFF结构好；同时，有出现单层的方案如GFM（单层多点解决方案）和GF（单层膜解决方案）的触控屏结构，都有欠缺；中高端手机比较热衷的触控屏结构是ON-cell和IN-cell结构，相较于GFF技术可有效降低厚度、提高屏的亮度（穿透率），其不同之处在于将触控屏的功能片集中制作在显示模组LCM上。
如图1所示，ON-cell和IN-cell结构的触控屏包括背光模组、第一偏光片111、阵列基板121、彩膜基板112、第二偏光片111、封框胶202以及玻璃盖板201。其中，显示面板主要是由阵列基板与彩膜基板组成，实现显示的效果。在制备触控屏的工艺中，玻璃盖板与显示面板的贴合工艺受限以及使用的材料也受限，进而导致触控屏的整体的厚度受限。目前，触控屏整体的厚度只能做到大于或等于1.65mm。其中，玻璃盖板的厚度为0.55mm；框胶的厚度为0.1mm；显示面板的厚度为0.4mm；背光模组的厚度为0.61mm。如果用户想通过进一步压缩触控屏中任一部件的厚度来减轻触控屏本身的重量的话，容易使得触控屏出现各种弊端。例如，如果将玻璃盖板的厚度从0.55mm压缩到0.4mm，当玻璃盖板与显示面板贴合后，容易出现因应力不均造成表面黄斑、应力痕等不良现象，且触控屏整体的翘曲公差增大。如果压缩封框胶的厚度，会引起玻璃盖板与显示面板贴的过程中产生气泡，导致贴合不良，无法实现量产。如果压缩显示面板的厚度，容易导致Cell破片率会大幅上升，且显示区内容易出现不均匀、色差（Mura）等不良现象。如果压缩阵列基板的厚度，导致光效下降，导致触控屏的亮度受损，功耗增加的弊端。因此，压缩触控屏中的任一部件，都会导致触控屏整体性能较差，进而导致触控屏的良率下降。
 技术问题
本发明的目的在于，提供一种触控屏及其制备方法，以解决现有技术存在的触控屏整体的厚度大，在减薄触控屏过程中，容易出现黄斑、应力痕、翘曲公差增大、贴合不良、色差等现象，整体性能较差，触控屏的良率下降的技术问题。
 技术解决方案
为实现上述目的，本发明提供一种触控屏，包括背光模组、第一组件和第二组件，所述第一组件设于所述背光模组一侧的表面；所述第二组件设于所述第一组件远离所述背光模组一侧的表面；其中，所述第一组件包括第一偏光片以及彩膜基板；所述第一偏光片设于所述背光模组一侧的表面；所述彩膜基板设于所述第一偏光片远离所述背光模组一侧的表面；所述第二组件包括阵列基板与第二偏光片；所述阵列基板设于设于所述彩膜基板远离所述背光模组一侧的表面；所述第二偏光片设于所述阵列基板远离所述背光模组一侧的表面。
进一步地，所述背光模组包括反射片、导光板、第一棱镜片、扩散片以及第二棱镜片；所述导光板设于所述反射片一侧的表面；所述第一棱镜片设于所述导光板远离所述反射片一侧的表面；所述扩散片设于所述第一棱镜片远离所述反射片一侧的表面；所述第二棱镜片设于所述扩散片远离所述反射片一侧的表面；其中，所述第二棱镜片贴合至所述第一偏光片。
进一步地，所述彩膜基板的长度小于所述阵列基板的长度；所述彩膜基板的宽度小于所述阵列基板的宽度。
进一步地，所述触控屏还包括底板、导电层以及IC驱动电路单元；所述反射片被安装至所述底板一侧的表面；所述导电层其一端贴附于所述阵列基板一侧表面，其另一端连接至所述底板另一侧表面；所述IC驱动电路单元被安装至所述底板另一侧的表面，且电连接至所述导电层。
进一步地，所述导电层的材质为氧化钼。
进一步地，所述第一偏光片为多层膜反射式偏光片；所述第二偏光片为硬化涂层偏光片。
进一步地，所述阵列基板的厚度为0.35mm~0.45mm；所述彩膜基板的厚度为0.095mm~0.11mm；所述第二偏光片的厚度为0.20mm~0.22mm。
进一步地，所述第二组件的纵向截面为四边形，包括长边和短边，所述第二组件的纵向截面包括圆弧部，设于一长边和一短边的连接处。
为实现上述目的，本发明还提供一种触控屏的制备方法，包括如下步骤，背光模组制备步骤，制备一背光模组；第一组件制备步骤，在所述背光模组上表面制备一第一组件；以及第二组件制备步骤，在所述第一组件上表面制备一第二组件；其中，所述第一组件制备步骤，包括如下步骤，第一偏光片制备步骤，在所述背光模组上表面制备第一偏光片；以及彩膜基板制备步骤，在所述第一偏光片上表面制备一彩膜基板；其中，所述第二组件制备步骤，包括如下步骤，阵列基板制备步骤，在所述彩膜基板上表面制备一阵列基板；以及第二偏光片制备步骤，在所述阵列基板上表面制备一第二偏光片。
进一步地，在所述第二组件制备步骤中，对所述第二组件进行抛光研磨处理，使得所述第二组件的纵向截面的角落处设有圆弧部。
 有益效果
本发明的技术效果在于，提供一种触控屏及其制备方法，将彩膜基板与阵列基板倒置设计，即阵列基板设于彩膜基板上表面，去除现有技术的玻璃盖板和封框胶，用阵列基板取代现有技术中的玻璃盖板，所述该阵列基板的尺寸与现有技术中的玻璃盖板的尺寸相同，在减少触控屏整体的厚度的同时，保证触控屏的整体性能，保证触控屏的良率不会降低。
 附图说明
图1为现有技术所述触控屏的结构示意图；
图2为本实施例所述触控屏的结构示意图；
图3为本实施例所述触控屏的剖面图；
图4为本实施例所述触控屏制备方法的流程图；
图5为本实施例第一组件制备步骤的流程图；
图6为本实施例第二组件制备步骤的流程图。
附图中部分标识如下：
         11第一组件；12第二组件；
         111第一偏光片；112彩膜基板；
         121阵列基板；122第二偏光片；
         1211长边；1212短边；100圆弧部；
20边框；21反射片；22导光板；23第一棱镜片；24扩散片；
25第二棱镜片；26遮光胶；27背光源；28双面胶层；29光源驱动电路；
31导电层；32 IC驱动电路单元；
41侧板；42底板；
201玻璃盖板；202封框胶。
 本发明的实施方式
以下参考说明书附图介绍本发明的优选实施例，用以举例证明本发明可以实施，这些实施例可以向本领域中的技术人员完整介绍本发明的技术内容，使得本发明的技术内容更加清楚和便于理解。然而本发明可以通过许多不同形式的实施例来得以体现，本发明的保护范围并非仅限于文中提到的实施例。
本实施例提供一种触控屏包括显示模组、背光模组、绑定区以及整机中框，所述显示模组、所述背光模组以及所述绑定区三者都设于所述整机中框内，所述显示模组设于所述背光模组上表面。
如图2~3所示，所述显示模组包括第一组件11和第二组件12，第二组件12设于第一组件11上表面。
第一组件11包括第一偏光片111和彩膜基板112，彩膜基板112贴附于第一偏光片111上表面。其中，第一偏光片111为多层膜反射式偏光片，该多层膜通常和吸收式偏光片贴合在一起，可以显著地提高显示模组的背光利用率。彩膜基板112包括彩色滤光层，将光源发出的白光分别转化为红、绿、蓝等单色光，从而实现彩色显示。彩膜基板112的厚度为0.095mm~0.11mm，其厚度优选为0.1mm。然而，现有技术中的彩膜基板厚度一般为0.125mm以上，因此，本实施例中的彩膜基板与现有技术中的彩膜基板相比更加轻薄。
第二组件12包括阵列基板121和第二偏光片122，第二偏光片122贴附于阵列基板121上表面。其中，阵列基板121包括栅极层、栅极绝缘层、有源层、钝化层、源漏极层等多个层结构。阵列基板121厚度为0.35mm~0.45mm，其厚度优选为0.4mm、0.41mm。本实施例中的阵列基板121用以取代现有技术中的玻璃基板，可以使得触控屏更加轻薄。第二偏光片122的厚度为0.20mm~0.22mm，其厚度优选为0.211mm、0.215mm。第二偏光片122为经过硬化涂层处理的硬化涂层偏光片，可以保证其表面8H的硬度，进而保证触控屏的硬度。本实施例中，阵列基板121的长度与第二偏光片122的长度相对应，以确保第二偏光片122将阵列基板121完全覆盖。
进一步地，第二组件12的纵向截面为四边形，包括长边1211和短边1212。由于第二组件12包括阵列基板121与第二偏光片1212，因此，长边1121为第二偏光片1212的长边，短边1212为阵列基板121与第二偏光片122两短边之和。本实施例中，第二组件12的纵向截面还包括圆弧部100，设于一长边1211和一短边1212的连接处，从第二偏光片122延伸至阵列基板121。圆弧部100的半径为0.13mm~0.16mm，其半径优选为0.15mm，可以使得显示模组的边缘处更加平缓，防止出现碎屏风险。在另一实施例中，圆弧部100可以只设于第二偏光片122的拐角处（即相当于第二偏光片122的长边1211与短边1212的连接处），只要能使显示模组的边缘处更加平缓即可。
进一步地，彩膜基板112的长度小于阵列基板111的长度；彩膜基板112的宽度小于阵列基板111的宽度，阵列基板111代替现有技术中的玻璃基板，防止产生黄斑、应力痕等不良的现象，保证了触控屏的良率以及触控屏的整体性能。
所述背光模组从下至上依次包括反射片21、导光板22、第一棱镜片23、扩散片24、第二棱镜片25以及遮光胶26，参照图2。反射片21用于反射光线，具有较好的反光性能。导光板22利用光学级亚克力板材吸取从灯发出来的光在光学级亚克力板材表面的停留，当光线射到各个导光点时，反射光会往各个角度扩散，然后破坏反射条件由导光板正面射出，通过各种疏密、大小不一的导光点，可使导光板均匀发光。第一棱镜片23可增强触控屏的亮度。扩散片24可为触控屏提供一个均匀的面光源。第二棱镜片25通过遮光胶26贴合至第一偏光片111下表面，也可增强触控屏的亮度。背光模组112的发光效果将直接影响到触控屏的视觉效果。
所述背光模组还包括背光源27、双面胶层28、光源驱动电路29以及边框20，参照图2。背光源27具有亮度高，寿命长、发光均匀等特点，背光源27为背光模组2提供光源，设于导光板22的左侧，且设于双面胶层28的下表面。光源驱动电路29的下表面连接至双面胶层28的上表面，光源驱动电路29的上表面连接至遮光胶26的下表面，光源驱动电路29驱动背光源发光，进而影响到触控屏的视觉效果。在背光源2设有一边框20，设于反射片21与双面胶层28之间，用以支撑双面胶层28以上的部件以及确保更多的光源照射到导光板22。
所述绑定区包括导电层31和IC驱动电路单元32，参照图2。导电层31包括覆晶薄膜（Chip On Film，COF）及柔性电路板（Flexible Printed Circuit，FPC），覆晶薄膜贴附于柔性电路板。其中，导电层31材质为氧化钼，该材质在玻璃表面分布均匀性好，在可见光范围内具有较高的反射率，可以解决显示模组内导电层反光的技术问题，保证触控屏具有良好的显示效果。
所述整机中框包括两个彼此相对设置的侧板41及底板42，参照图2。侧板41的上方具有一个直角部，该直角部用以支撑阵列基板121及第二偏光片122，所述直角部包括侧边和底边，所述侧边通过胶层贴附于所述第二组件的侧边，所述底板通过框胶贴附于所述阵列基板的部分底边。底板42设于两侧板41之间，并垂直侧边42，反射片21被安装至底板42的上表面。
导电层31的一端贴附于阵列基板121的下表面，其另一端连接至底板42的下表面，导电层31中部需要承受应力，使得导电层31与阵列基板121的连接处容易被拉坏。本实施例中，导电层31中部形成一弧形曲面，且导电层31比较薄，柔韧性较好，可以承受足够的应力。因此，在导电层31弯折的过程中，导电层31与阵列基板121的连接处不容易被拉坏。IC驱动电路单元32被安装至底板31下表面，底板31设有一通孔，导电层31穿过所述通孔连接至底板42的下表面，且电连接至IC驱动电路单元32。与现有技术相比，对绑定区3中的导电层31、IC驱动电路单元32进行结构反转处理，可以使得绑定区3线路在弯折时，不会导电层31与阵列基板121的连接处不容易被拉坏，保证触控屏的良率。
本实施例在工作中，背光源发出的光线经由导光板将光线反射到第一棱镜片，第一棱镜片增强光线的亮度，并作用于扩散片，使得扩散片为第二棱镜片提供一个均匀的面光源，第二棱镜片更进一步地增强光线的强度并将该光线反射到第一偏光片。彩膜基板接收到第一偏光片反射的光线，当彩膜基板与阵列基板结合时，使得第二偏光片上表面实现显示的效果。与现有技术相比，本实施例显示效果不变。
现有技术的触控屏包括一玻璃盖板，用以保护上偏光片，但会造成一定的触控延迟。本实施例去除了现有技术中的玻璃盖板与封框胶，用户得以直接在第二偏光片上输入触控指令，不会受到玻璃盖板的影响，触控无延迟，更灵敏。
本实施例将第二偏光片的厚度由0.074mm调整为0.215 mm，物理强度增强近三倍，因此，第二偏光片不易被损毁，无需玻璃盖板的保护。
现有技术中，触控屏的整体厚度一般为1.722mm，其中，玻璃盖板的厚度为0.55mm，封框胶的厚度为0.1mm，上偏光片的厚度为0.074mm，彩膜基板的厚度为0.125mm，阵列基板的厚度为0.125mm，下偏光片的厚度为0.071mm以及背光模组的厚度为0.677mm。然而，本实施例中，触控屏的厚度优选为1.463mm，其中，第二偏光片（相当于现有技术中的上偏光片）的厚度为0.215 mm，阵列基板的厚度为0.4mm，彩膜基板的厚度为0.1mm，第二偏光片（相当于现有技术中的下偏光片）的厚度为0.071mm以及背光模组的厚度为0.677mm。经对比，本实施例将彩膜基板与阵列基板倒置设计，即阵列基板设于彩膜基板上表面，减少了触控屏整体的厚度在保证触控屏的整体性能的同时，进一步保证触控屏的良率不会降低。
与现有技术相比，本实施例去除了现有技术中的玻璃盖板与封框胶，加厚了阵列基板及第二偏光片的厚度，第一偏光片与背光模组的厚度保持不变，阵列基板、背光模组及两个偏光片的物理强度不变或变大，因此，本实施例可以保证或提高触控屏的良率。其中，去除了玻璃盖板与封框胶，可以防止触控屏出现黄斑、应力痕、翘曲公差增大、贴合不良等不良现象，从而使得触控屏更加轻薄，在保证触控屏整体性能的同时保证了触控屏的良率。具体地，用阵列基板代替玻璃盖板，加厚了阵列基板的长度及宽度，使得阵列基板的尺寸与现有技术中的玻璃基板的尺寸相适应。将第二偏光片的厚度加厚，当第二偏光片紧密贴合于阵列基板时，以增加触控屏整体的硬度，确保用户直接触控上偏光片时，触控屏不被损坏。另外，还将彩膜基板的厚度减薄，从而使得触控屏整体的厚度减少，在减轻触控屏厚度、重量的同时保证了其性能及良率。
如图4所示，本实施例还提供一种触控屏制备方法，包括如下步骤S1~S4。
S1背光模组制备步骤，在一整机中框的底板上表面制备一背光模组。所述背光模组包括反射片、导光板、第一棱镜片、扩散片、第二棱镜片以及遮光胶。所述反射片、所述导光板、所述第一棱镜片、所述扩散片、所述第二棱镜片以及所述遮光胶依次地设于所述底板的上表面。所述反射片用于反射光线，具有较好的反光性能。所述导光板利用光学级亚克力板材吸取从灯发出来的光在光学级亚克力板材表面的停留，当光线射到各个导光点时，反射光会往各个角度扩散，然后破坏反射条件由导光板正面射出，通过各种疏密、大小不一的导光点，可使导光板均匀发光。所述第一棱镜片可增强触控屏的亮度。所述扩散片可为触控屏提供一个均匀的面光源。所述背光模组还包括背光源、双面胶层、光源驱动电路以及边框，这些部件均设于所述导光板的左侧。所述双面胶层及所述光源驱动电路依次设于所述背光源的上表面。所述边框设于所述反射片与所述双面胶层之间，用以支撑所述双面胶层以上的部件以及确保更多的光源照射到所述导光板。
如图5所示，S2第一组件制备步骤，包括如下步骤S21~ S22。S21第一偏光片制备步骤，在所述背光模组上表面制备第一偏光片。具体地，在所述第二棱镜片上表面制备所述第一偏光片。所述第一偏光片下表面通过所述遮光胶贴合所述第二棱镜片。S22彩膜基板制备步骤，在所述第一偏光片上表面制备一彩膜基板。
如图6所示，S3第二组件制备步骤，对所述第二组件进行抛光研磨处理，使得所述第二组件的纵向截面的角落处设有圆弧部。S3第二组件制备步骤包括如下步骤S31~S32。S31阵列基板制备步骤，在所述彩膜基板上表面制备一阵列基板。对一阵列基板进行切割处理，使得被切割后的所述阵列基板的尺寸与现有技术的玻璃基板的尺寸相同，并能被整机中框容纳。用户将被切割后的所述阵列基板边缘处进行抛光研磨处理，使得所述阵列基板的长边与短边的连接处设有第一圆弧部，所述第一圆弧部的半径为0.13mm~0.16mm，其半径优选为0.15mm，可以消除被切割后的所述阵列基板边缘处的切割裂纹造成触控屏在进行整机测试时出现碎屏风险。S32第二偏光片制备步骤，在所述阵列基板上表面制备一第二偏光片。所述第二偏光片为经过硬化涂层处理的硬化涂层偏光片，可以保证其表面8H的硬度，进而保证触控屏的硬度，确保用户直接触控上偏光片时，触控屏不被损坏。所述第二偏光片的长边与短边的连接处设有第二圆弧部，所述第二圆弧部的半径与所述第一圆弧部的半径相同，所述第一圆弧部延伸至所述第二圆弧部，且圆心位于同一位置，进而使得所述第二组件边缘处平缓，且与所述整机中框紧密贴合。在其他实施例中，用户也可以直接在所述第二偏光片的长边与短边处设置圆弧部，能确保所述阵列基板、所述第二偏光片与所述整机中框边缘紧密贴合，并保证触控屏在整机测试的过程中不发生碎屏的现象。
S4绑定区制备步骤，在触控屏内设置一绑定区。绑定区包括导电层和IC驱动电路单元。所述导电层的一端贴附于所述阵列基板的下表面，其另一端连接至一底板的下表面，防止导电层在弯折的过程中容易将所述阵列基板拉坏。所述IC驱动电路单元被安装至所述底板下表面，所述底板设有一通孔，所述导电层穿过所述通孔，电连接至所述IC驱动电路单元。
现有技术中，触控屏的整体厚度一般为1.722mm，其中，玻璃盖板的厚度为0.55mm，封框胶的厚度为0.1mm，上偏光片的厚度为0.074mm，彩膜基板的厚度为0.125mm，阵列基板的厚度为0.125mm，下偏光片的厚度为0.071mm以及背光模组的厚度为0.677mm。然而，本实施例中，触控屏的厚度优选为1.463mm，其中，上偏光片的厚度为0.215 mm，阵列基板的厚度为0.4mm，彩膜基板的厚度为0.1mm，下偏光片的厚度为0.071mm以及背光模组的厚度为0.677mm。经对比，本实施例中，本实施例将彩膜基板与阵列基板倒置设计，减少了触控屏整体的厚度在保证触控屏的整体性能的同时，进一步保证触控屏的良率不会降低。
与现有技术相比，本实施例去除了现有技术中的玻璃盖板与封框胶，加厚了阵列基板及第二偏光片的厚度，第一偏光片与背光模组的厚度保持不变，阵列基板、背光模组及两个偏光片的物理强度不变或变大，因此，本实施例可以保证或提高触控屏的良率。其中，去除了玻璃盖板与封框胶，可以防止触控屏出现黄斑、应力痕、翘曲公差增大、贴合不良等不良现象，从而使得触控屏更加轻薄，在保证触控屏整体性能的同时保证了触控屏的良率。具体地，用阵列基板代替玻璃盖板，加厚了阵列基板的长度及宽度，使得阵列基板的尺寸与现有技术中的玻璃基板的尺寸相适应。将第二偏光片的厚度加厚，当第二偏光片紧密贴合于阵列基板时，以增加触控屏整体的硬度，确保用户直接触控上偏光片时，触控屏不被损坏。另外，还将彩膜基板的厚度减薄，从而使得触控屏整体的厚度减少，在减轻触控屏厚度、重量的同时保证了其性能及良率。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (10)

  1. 一种触控屏，其包括
    背光模组；
    第一组件，设于所述背光模组一侧的表面；
    第二组件，设于所述第一组件远离所述背光模组一侧的表面；
    其中，所述第一组件包括
    第一偏光片，设于所述背光模组一侧的表面；以及
    彩膜基板，设于所述第一偏光片远离所述背光模组一侧的表面；
    所述第二组件包括
    阵列基板，设于所述彩膜基板远离所述背光模组一侧的表面；以及
    第二偏光片，设于所述阵列基板远离所述背光模组一侧的表面。
  2. 如权利要求1所述的触控屏，其中，所述背光模组包括
    反射片；
    导光板，设于所述反射片一侧的表面
    第一棱镜片，设于所述导光板远离所述反射片一侧的表面；
    扩散片，设于所述第一棱镜片远离所述反射片一侧的表面；以及
    第二棱镜片，设于所述扩散片远离所述反射片一侧的表面；
    其中，所述第二棱镜片贴合至所述第一偏光片。
  3. 如权利要求1所述的触控屏，其中，
    所述彩膜基板的长度小于所述阵列基板的长度；
    所述彩膜基板的宽度小于所述阵列基板的宽度。
  4. 如权利要求1所述的触控屏，其中，还包括
    底板，所述反射片被安装至所述底板一侧的表面；
    导电层，其一端贴附于所述阵列基板一侧表面，其另一端连接至所述底板另一侧表面；以及
    IC驱动电路单元，所述IC驱动电路单元被安装至所述底板另一侧的表面，且电连接至所述导电层。
  5. 如权利要求4所述的触控屏，其中，
    所述导电层的材质为氧化钼。
  6. 如权利要求1所述的触控屏，其中，
    所述第一偏光片为多层膜反射式偏光片；
    所述第二偏光片为硬化涂层偏光片。
  7. 如权利要求1所述的触控屏，其中，
    所述阵列基板的厚度为0.35mm~0.45mm；
    所述彩膜基板的厚度为0.095mm~0.11mm；
    所述第二偏光片的厚度为0.20mm~0.22mm。
  8. 如权利要求1所述的触控屏，其中，
    所述第二组件的纵向截面为四边形，包括长边和短边，
    所述第二组件的纵向截面包括圆弧部，设于一长边和一短边的连接处。
  9. 一种触控屏的制备方法，其中，包括如下步骤：
    背光模组制备步骤，制备一背光模组；
    第一组件制备步骤，在所述背光模组上表面制备一第一组件；以及
    第二组件制备步骤，在所述第一组件上表面制备一第二组件；
    其中，所述第一组件制备步骤，包括如下步骤：
    第一偏光片制备步骤，在所述背光模组上表面制备第一偏光片；以及
    彩膜基板制备步骤，在所述第一偏光片上表面制备一彩膜基板；
    其中，所述第二组件制备步骤，包括如下步骤：
    阵列基板制备步骤，在所述彩膜基板上表面制备一阵列基板；以及
    第二偏光片制备步骤，在所述阵列基板上表面制备一第二偏光片。
  10. 如权利要求9所述触控屏的制备方法，其中，
    在所述第二组件制备步骤中，对所述第二组件进行抛光研磨处理，使得所述第二组件的纵向截面的角落处设有圆弧部。
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