WO2017045356A1 - 显示面板及其制备方法、显示装置 - Google Patents

显示面板及其制备方法、显示装置 Download PDF

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Publication number
WO2017045356A1
WO2017045356A1 PCT/CN2016/073989 CN2016073989W WO2017045356A1 WO 2017045356 A1 WO2017045356 A1 WO 2017045356A1 CN 2016073989 W CN2016073989 W CN 2016073989W WO 2017045356 A1 WO2017045356 A1 WO 2017045356A1
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WIPO (PCT)
Prior art keywords
display
substrate
display panel
area
upper substrate
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PCT/CN2016/073989
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English (en)
French (fr)
Inventor
李虎
许军
张青
朱孝菲
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京东方科技集团股份有限公司
合肥鑫晟光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 合肥鑫晟光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/505,737 priority Critical patent/US10429971B2/en
Publication of WO2017045356A1 publication Critical patent/WO2017045356A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • 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
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
    • 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/844—Encapsulations
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/871—Self-supporting sealing arrangements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/873—Encapsulations
    • 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
    • G02F1/133388—Constructional arrangements; Manufacturing methods with constructional differences between the display region and the peripheral region
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures

Definitions

  • the present invention belongs to the field of display technologies, and in particular, to a display panel, a preparation method thereof, and a display device.
  • the display of electronic products currently mainly includes two types: liquid crystal display and OLED display.
  • the internal touch panel (Touch Panel) or the transparent glass cover (Cover Glass) and the liquid crystal substrate (LCD Module) can be attached in two ways: a full sticker and a frame sticker.
  • the frame sticker refers to the use of a frame glue (also known as a mouth glue) to fit the touch screen or the transparent glass cover to the outer peripheral area of the liquid crystal substrate;
  • the full sticker refers to the touch screen or transparent using OCA optical glue or OCR optical glue.
  • the glass cover is attached to the entire liquid crystal substrate. Compared with the frame sticker, the optical properties of the adhesive layer obtained by the full sticker are better, and the liquid crystal display panel which is adhered to the full-stick manner continues to grow in the market.
  • the step of fully attaching is: firstly coating the OCA optical adhesive or the OCR optical adhesive on the touch screen or the transparent glass cover and pre-curing; then bonding the touch screen or the transparent glass cover to the liquid crystal substrate, and adopting UV microparticles are cured by light.
  • FIG. 1 is a schematic view showing surface curing and side curing when a display panel is bonded in a full-stick manner in the prior art.
  • the liquid crystal touch display screen is formed by bonding the touch substrate 4 and the liquid crystal substrate 5 through the adhesive layer 2, and an opaque black matrix 6 is disposed in the non-display area to shield the metal traces and define Display area and decoration.
  • the black matrix 6 since the black matrix 6 is opaque, it may affect the light curing effect of the UV particles on the OCA optical adhesive or the OCR optical adhesive, resulting in the lack of glue or residual glue on the edge of the touch display screen, thereby affecting the appearance of the touch display screen, and Water ripple occurs when the touch screen is operated (for example, by tapping the touch screen by hand), which greatly affects the user experience.
  • a current solution is to face-curing the OCA optical adhesive or the OCR optical adhesive by using the surface curing light source 7 and the side curing light source 8 to improve the OCA optical.
  • the cure rate of the glue or OCR optical glue is not only increases the number of process steps, but also makes the side curing operation difficult and the curing effect is not satisfactory.
  • the liquid crystal substrate 5 is usually fixed inside a bezel (not shown) by an adhesive member such as a tape.
  • an adhesive member such as a tape.
  • the present invention is directed to the above technical problem, and provides a display panel, a preparation method thereof, and a display device.
  • the display panel eliminates the black matrix structure by using a thin film layer structure, and the structure is simplified; the corresponding display panel is simple in preparation method. Side curing processing is required, which saves costs.
  • the technical solution adopted to solve the technical problem of the present invention includes a display panel, which is divided into a display area and a non-display area surrounding the display area at the periphery of the display area, the display panel includes: a display substrate; An upper substrate that displays a display side of the substrate and is disposed opposite the display substrate; and an adhesive layer disposed between the upper substrate and the display substrate, the display substrate further comprising the upper substrate A film layer away from the side of the display substrate, an area of the film layer corresponding to the non-display area is an opaque area, and a region corresponding to the display area is a transparent area.
  • the bonding layer is formed using OCA optical glue or OCR optical glue.
  • the transparent region of the film layer is formed of a transparent material, and the opaque region of the film layer is provided with an opaque material.
  • the transparent material comprises a PET material or a TAC material, the opaque material comprising a material that can be used to make a black matrix.
  • the film layer is bonded to the upper substrate by an OCA optical adhesive.
  • the display substrate is a liquid crystal display substrate or an OLED display substrate
  • the upper substrate is a touch screen or a transparent glass cover.
  • the technical solution for solving the technical problem of the present invention further includes a display device including the above display panel and a frame, the frame is disposed outside the display panel, and the height of the frame is greater than the display substrate in the display panel thickness of.
  • the display device further includes a bonding component, and the display panel is encapsulated inside the frame by the bonding component.
  • the technical solution adopted to solve the technical problem of the present invention further includes a method of manufacturing a display panel, wherein the display panel is divided into a display area and a non-display area surrounding the display area at a periphery of the display area, the method includes the following steps:
  • a film layer is attached to a side of the upper substrate away from the display substrate, and a region of the film layer corresponding to the non-display area is an opaque area, and a region corresponding to the display area is a transparent area.
  • the step of bonding the display substrate and the upper substrate through the adhesive layer comprises:
  • the step of irradiating, curing the OCA optical adhesive or the OCR optical adhesive with UV microparticles comprises:
  • the OCA optical adhesive or the OCR optical adhesive is irradiated from the side of the upper substrate to the OCA optical adhesive or the OCR optical adhesive using UV microparticles to form the adhesive layer.
  • the step of attaching the thin film layer on the side of the upper substrate away from the display substrate comprises:
  • the upper substrate is bonded to the film layer.
  • the technical effect of the invention is that the display panel eliminates the black matrix structure by adopting the thin film layer structure, and the structure is simplified; the corresponding display panel is simple in preparation method, does not need side curing processing, and saves cost.
  • FIG. 1 is a schematic view showing surface curing and side curing when a display panel is bonded in a full-stick manner in the prior art.
  • Embodiment 2 is a schematic structural view of a display panel in Embodiment 2 of the present invention.
  • Embodiment 3 is a schematic view showing a bonded display substrate and an upper substrate in Embodiment 3 of the present invention.
  • Fig. 4 is a schematic view showing the surface layer of the third embodiment of the present invention to form an adhesive layer.
  • FIG. 5 is a schematic structural diagram of a display device according to Embodiment 4 of the present invention.
  • the embodiment provides a display panel, which is divided into a display area and a display area.
  • the periphery surrounds the non-display area of the display area.
  • the display panel includes: a display substrate; an upper substrate disposed on the display side of the display substrate and disposed on the display substrate, and an adhesive layer disposed between the upper substrate and the display substrate.
  • the display panel further includes a film layer disposed on a side of the upper substrate away from the display substrate, an area of the film layer corresponding to the non-display area being an opaque area, and a region corresponding to the display area being a transparent area.
  • the display panel in this embodiment sets the area of the thin film layer corresponding to the non-display area as an opaque area to function as a black matrix, which not only saves the black matrix forming step, saves cost, but also can be attached.
  • the adhesive layer is cured by light before the film layer, so that only the surface curing is required, and the side curing is not required, so that a better light curing effect can be achieved.
  • the embodiment provides a display panel 100, which is divided into a display area and a non-display area surrounding the display area at the periphery of the display area.
  • the display panel 100 includes a display substrate 1 , an upper substrate 3 disposed on the display side of the display substrate 1 and disposed on the display substrate 1 , and an adhesive layer 2 disposed between the upper substrate 3 and the display substrate 1 .
  • the display panel 100 further includes a film layer 31 disposed on a side of the upper substrate 3 away from the display substrate 1.
  • the region of the film layer 31 corresponding to the non-display area is an opaque area, and the area corresponding to the display area is a transparent area.
  • the film layer 31 is adhered to the side of the upper substrate 3 remote from the display substrate 1 by a light-permeable adhesive material.
  • the light transmissive glue material is preferably an OCA optical glue.
  • the transparent region of the film layer 31 corresponds to the display region of the display panel 100, which is formed of a transparent material, preferably a transparent film formed of a PET material or a TAC material to constitute a transparent region of the film layer 31; the opaque region of the film layer 31 is provided with opacity
  • the material, and preferably the material that can be used to make the black matrix such that the opaque regions on the film layer 31 can effect the shielding of the metal traces of the prior art black matrix, defining the display area and decoration, and the like.
  • the black matrix structure embedded in the prior art is not used in the display panel 100, and only the opaque region is provided in the film layer 31, so that the structure is simplified and the preparation process is simple.
  • the adhesive layer 2 for bonding the display substrate 1 and the upper substrate 3 is preferably formed using OCA optical glue or OCR optical glue, and accordingly, after the display base 1 is attached to the upper substrate 3 and before the film layer 31 is attached.
  • the UV-microparticles are used to cure the OCA optical adhesive or the OCR optical adhesive to obtain a bonding layer 2 having a good bonding effect.
  • the display panel in this embodiment can achieve the same function as the display panel of the prior art, and thus has a wide range of applications.
  • the display panel 100 may be a liquid crystal panel having only a display function. Accordingly, the display substrate 1 is a liquid crystal substrate, and the upper substrate 3 is a transparent glass cover.
  • the bonding structure is the same as or substantially the same as the bonding structure shown in FIG. 2 .
  • the display panel 100 may be a liquid crystal touch panel having both a display function and a touch function. Accordingly, the display substrate 1 is a liquid crystal substrate, and the upper substrate 3 is a touch screen, and the bonding structure thereof is as shown in FIG.
  • the conforming structures are the same or substantially the same.
  • the display panel 100 may also be an OLED panel having only a display function.
  • the display substrate 1 is an OLED substrate
  • the upper substrate 3 is a transparent glass cover
  • the bonding structure is the same as the bonding structure shown in FIG. 2 or
  • the display panel 100 can be an OLED touch panel having both a display function and a touch function.
  • the display substrate 1 is an OLED substrate
  • the upper substrate 3 is a touch screen
  • the bonding structure thereof is the same as that of FIG. 2 .
  • the illustrated conforming structures are the same or substantially the same.
  • the display panel in this embodiment may also be other panels that have not been mentioned, as long as the panels adopt a film layer similar to the opaque region in this embodiment to replace the black matrix in the prior art. All should fall within the scope of protection of the present invention.
  • the embodiment provides a method for preparing a display panel for forming the display panel in Embodiment 2.
  • the method of manufacturing the display panel includes steps S1 and S2 as described below.
  • step S1 as shown in FIG. 3, the display substrate 1 and the upper substrate 3 are bonded by the adhesive layer 2, and the display panel to be formed is divided into a display area and outside the display area.
  • the adhesive layer 2 Surrounding the non-display area of the display area, the adhesive layer 2 is disposed in a region between the display substrate 1 and the upper substrate 3 corresponding to the display area and the non-display area.
  • the step S1 may include: cleaning the surface of the display substrate 1 and the upper substrate 3 to be contacted with the OCA optical adhesive or the OCR optical adhesive, that is, the surface of the display substrate 1 bonded to the upper substrate 3; the display substrate 1 is to be adhered Attaching one side of the upper substrate 3 (or the side of the upper substrate 3 to which the display substrate 1 is to be bonded) is coated with OCA optical glue or OCR optical glue; pre-curing the above OCA optical adhesive or OCR optical adhesive; and the upper substrate 3 and the display substrate 1 bonding makes OCA optical glue or OCR optical glue in between; using UV microparticles to irradiate OCA optical glue or OCR optical glue from the side of the upper substrate 3 to cure the OCA optical adhesive or OCR optical adhesive to form a bonding
  • the layer 2, that is, the surface layer curing light source 7 is used to form the adhesive layer 2, and the upper substrate 3 is bonded to the display substrate 1.
  • step S2 the film layer 31 is attached to the side of the upper substrate 3 away from the display substrate 1.
  • the area of the film layer 31 corresponding to the non-display area is an opaque area, and the area corresponding to the display area is a transparent area, thereby forming an implementation.
  • the step S2 may include: cleaning the side of the upper substrate 3 away from the display panel 1; and coating the upper substrate 3 or the film layer 31 with OCA optical glue or OCR optical glue.
  • OCA optical glue is preferably used here because the adhesive force required between the upper substrate 3 and the thin film layer 31 is not large, so that it is only necessary to directly coat the OCA optical adhesive, and then the upper substrate 3 and the thin film layer 31 are bonded. Meet the requirements for use.
  • UV microparticles can also be used to cure the OCA optical adhesive to improve the adhesion.
  • OCR optical adhesive can also be used, and then the OCR optical adhesive is cured by UV microparticles to bond the upper substrate 3 and the thin film layer 31.
  • the specific manner is the same as the method of forming the bonding layer 2, and details are not described herein again.
  • the method for preparing the display panel in the embodiment eliminates the steps of manufacturing the printing, exposing and developing the black matrix embedded in the prior art, simplifies the manufacturing process, saves the manufacturing cost, and more importantly, sticks
  • the post-junction display substrate and the upper substrate do not hinder the UV particles used for curing from being irradiated to the OCA optical adhesive or the OCR optical adhesive forming the adhesive layer, so that only the OCA optical adhesive or the OCR optical adhesive is required to be surface-solidified. Without the need for side curing, a better light curing effect can be achieved, which further simplifies the preparation process.
  • the display substrate 1 in this embodiment may be a liquid crystal display substrate or an OLED display substrate, and the upper substrate 3 may be a touch screen or a transparent glass cover.
  • the corresponding preparation method is the same as the above method, and is no longer Narration.
  • the embodiment provides a display device including any one of the above display panels and a frame.
  • the frame is disposed outside the display panel, and the height of the frame is greater than the thickness of the display substrate in the display panel. Because the OCA optical adhesive or the OCR optical adhesive forming the adhesive layer 2 in this embodiment does not need to be side-cured, the adhesive layer 2 can be disposed inside the frame, that is, the height of the frame is designed to be larger than the thickness of the display substrate. Reduce the risk of light leakage from the display substrate.
  • the display panel included in the display device in this embodiment may be a normal liquid crystal panel, a liquid crystal touch panel, or an OLED panel.
  • the display panel in the embodiment is a liquid crystal touch panel.
  • the display device includes a frame 200 and a display panel 100 .
  • the display panel 100 includes a display substrate 1, an adhesive layer 2, an upper substrate 3, and a thin film layer 31.
  • the display substrate 1 includes a liquid crystal cell 11 and a backlight module 12; the liquid crystal cell 11 and the backlight module 12 are encapsulated in the frame 200 by the bonding assembly 300.
  • one end of the bonding assembly 300 is adhered to the bottom surface of the display substrate 1, and then the bonding assembly 300 is passed through the outside of the frame 200, and the other end thereof is adhered to the upper surface of the film layer 31.
  • the bonding assembly 300 can be an adhesive tape.
  • the bonding layer since the bonding layer must be subjected to side curing treatment, it cannot be inside the frame, that is, the height H of the frame cannot be greater than the thickness h of the display substrate, otherwise the light used for the side curing is bounded by the frame. Blocked and could not reach the bonding layer. In this case, the bezel cannot be set higher than the thickness of the display substrate, so that there is a risk of light leakage of the display substrate.
  • the display panel 100 included in the display device in the embodiment does not need to be side-cured for the bonding layer 2 during the preparation process. Therefore, in the display device of the present embodiment, the height H of the bezel 200 can be made larger than the thickness of the display substrate 1. h, thereby causing the display substrate 1 to be inside the bezel 200, reducing the risk of light leakage of the display substrate 1.
  • the display device in this embodiment adopts the above display panel, not only the preparation process is simplified, the cost is saved, but also the height of the bezel is designed to be larger to reduce the risk of light leakage of the display substrate.
  • the display device can also be used to construct other devices having display functions, such as electronic paper, mobile phones, tablet computers, televisions, displays, notebook computers, digital photo frames, navigators, and the like.

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  • Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
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  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal (AREA)

Abstract

一种显示面板（100）及其制备方法、显示装置。该显示面板（100）划分为显示区以及在所述显示区外围包围所述显示区的非显示区，所述显示面板（100）包括：显示基板（1）；设置于所述显示基板（1）的显示侧并与所述显示基板（1）对盒设置的上层基板（3）；以及设置在所述上层基板（3）与所述显示基板（1）之间的粘接层（2），所述上层基板（3）还包括设置于所述上层基板（3）远离所述显示基板（1）一侧的薄膜层（31），所述薄膜层（31）的对应于所述非显示区的区域为不透明区、对应于所述显示区的区域为透明区。该显示面板（100）通过采用薄膜层（31）结构而省去了黑矩阵（6）结构，使结构简化；相应的显示面板（100）的制备方法简单、不需要进行侧固化加工、节省了成本。

Description

显示面板及其制备方法、显示装置 技术领域
本发明属于显示技术领域，具体涉及一种显示面板及其制备方法、显示装置。
背景技术
随着科技的发展，电子产品的显示屏的质量和功能不断改善、使用范围也越来越广。电子产品的显示屏目前主要包括两类：液晶显示屏和OLED显示屏。以液晶显示屏为例，其内部的触控屏(Touch Panel)或透明玻璃盖板(Cover Glass)与液晶基板(LCD Module)可按全贴和框贴两种方式贴合。框贴是指采用框贴胶(又称口子胶)将触控屏或透明玻璃盖板与液晶基板的外周区域贴合；全贴是指采用OCA光学胶或者OCR光学胶将触控屏或透明玻璃盖板与整个液晶基板贴合。相比于框贴，全贴得到的粘接层的透光率、色彩饱和度等光学特性较好，因此以全贴方式贴合的液晶显示屏在市场上的占有率持续增长。
全贴的步骤是：首先将OCA光学胶或者OCR光学胶涂覆在触控屏或透明玻璃盖板上并进行预固化；然后将触控屏或透明玻璃盖板与液晶基板贴合，并采用UV微粒子光照固化。
图1是现有技术中以全贴方式对显示面板进行贴合时进行面固化和侧固化的示意图。如图1所示，液晶触控显示屏由触控基板4与液晶基板5通过粘接层2粘合而形成，并在非显示区设置不透明的黑矩阵6，起到遮挡金属走线、定义显示区和装饰等作用。但是，由于黑矩阵6不透光，会影响UV微粒子对OCA光学胶或者OCR光学胶的光照固化效果，导致触控显示屏边缘缺胶或出现残胶，从而影响触控显示屏的外观，而且在操作触摸屏(例如，用手轻击触摸屏)时会发生水波纹的现象，大大影响用户体验。
为了克服上述问题，现行的一种解决方法，如图1所示，是对OCA光学胶或者OCR光学胶先后采用面固化光源7进行面固化和侧固化光源8进行侧固化，以提高对OCA光学胶或者OCR光学胶的固化率。然而，这样的方法不仅增加了工艺步骤，而且侧固化操作困难、固化效果也不理想。
此外，液晶基板5通常通过诸如胶带的粘接组件固定在边框(未示出)内部。当边框高度高于液晶基板5的厚度时，可以避免液晶基板5漏光，但增加对OCA光学胶或者OCR光学胶进行侧固化的难度；如果边框高度降低，侧固化虽然会更容易，但是液晶基板5漏光的风险将会增大。
因此，需要设计这样一种显示面板，在以全贴方式对其进行贴合时无需对OCA光学胶或者OCR光学胶进行侧固化，并且同时保证光照固化效果、降低光照固化的难度、简化工艺步骤以及减少液晶基板漏光的风险。
发明内容
本发明针对上述技术问题，提供一种显示面板及其制备方法、显示装置，该显示面板通过采用薄膜层结构而省去了黑矩阵结构，使结构简化；相应的显示面板的制备方法简单、不需要进行侧固化加工、节省了成本。
解决本发明技术问题所采用的技术方案包括一种显示面板，其划分为显示区以及在所述显示区外围包围所述显示区的非显示区，所述显示面板包括：显示基板；设置于所述显示基板的显示侧并与所述显示基板对盒设置的上层基板；以及设置在所述上层基板与所述显示基板之间的粘接层，所述显示基板还包括设置于所述上层基板远离所述显示基板一侧的薄膜层，所述薄膜层的对应于所述非显示区的区域为不透明区、对应于所述显示区的区域为透明区。
优选的是，所述粘接层采用OCA光学胶或者OCR光学胶形成。
优选的是，所述薄膜层的透明区采用透明材料形成，所述薄膜层的不透明区设置有不透明的材料。
优选的是，所述透明材料包括PET材料或TAC材料，所述不透明材料包括能够用于制作黑矩阵的材料。
优选的是，所述薄膜层通过OCA光学胶贴合在所述上层基板上。
优选的是，所述显示基板为液晶显示基板或OLED显示基板，所述上层基板为触控屏或透明玻璃盖板。
解决本发明技术问题所采用的技术方案还包括一种显示装置，其包括上述显示面板以及边框，所述边框设置在所述显示面板外侧，所述边框的高度大于所述显示面板中的显示基板的厚度。
优选的是，所述显示装置还包括粘接组件，所述显示面板通过所述粘接组件封装在所述边框内侧。
解决本发明技术问题所采用的技术方案还包括一种显示面板的制备方法，其中，所述显示面板划分为显示区以及在所述显示区外围包围所述显示区的非显示区，所述方法包括以下步骤：
将显示基板与上层基板通过粘接层粘合，所述粘接层设置于所述显示区与所述非显示区；以及
在所述上层基板的远离所述显示基板的一侧贴附薄膜层，所述薄膜层的对应于所述非显示区的区域为不透明区、对应于所述显示区的区域为透明区。
优选的是，将显示基板与上层基板通过粘接层粘合的步骤包括：
在所述显示基板或所述上层基板的一侧涂覆OCA光学胶或者OCR光学胶；
预固化所述OCA光学胶或者所述OCR光学胶；
将所述上层基板与所述显示基板贴合，使得所述OCA光学胶或所述OCR光学胶夹在所述上层基板与所述显示基板之间；以及
采用UV微粒子照射、固化所述OCA光学胶或者OCR光学胶，以形成所述粘接层，其使得所述上层基板与所述显示基板粘 合。
优选的是，采用UV微粒子照射、固化所述OCA光学胶或者OCR光学胶的步骤包括：
采用UV微粒子从所述上层基板一侧向所述OCA光学胶或者OCR光学胶照射，使所述OCA光学胶或者OCR光学胶固化以形成所述粘接层。
优选的是，在所述上层基板的远离所述显示基板的一侧贴附薄膜层的步骤包括：
在所述上层基板或所述薄膜层上涂覆OCA光学胶或者OCR光学胶；以及
将所述上层基板与所述薄膜层粘合。
本发明的技术效果为：显示面板通过采用薄膜层结构而省去了黑矩阵结构，使结构简化；相应的显示面板的制备方法简单、不需要进行侧固化加工、节省了成本。
附图说明
图1为现有技术中以全贴方式对显示面板进行贴合时进行面固化和侧固化的示意图。
图2为本发明实施例2中显示面板的结构示意图。
图3为本发明实施例3中粘合显示基板与上层基板的示意图。
图4为本发明实施例3中面固化形成粘接层的示意图。
图5为本发明实施例4中显示装置的结构示意图。
具体实施方式
为使本领域技术人员更好地理解本发明的技术方案，下面结合附图和具体实施方式对本发明的显示面板及其制备方法、显示装置作进一步详细描述。
实施例1：
本实施例提供一种显示面板，其划分为显示区以及在显示区 外围包围该显示区的非显示区。该显示面板包括：显示基板；设置于显示基板的显示侧并与所述显示基板对盒设置的上层基板；以及设置在上层基板与显示基板之间的粘接层。所述显示面板还包括薄膜层，其设置于上层基板的远离显示基板一侧，所述薄膜层的对应于非显示区的区域为不透明区、对应于显示区的区域为透明区。
本实施例中的显示面板将薄膜层的对应于非显示区的区域设为不透明区以起到黑矩阵的作用，这不仅省去了黑矩阵的形成步骤、节省了成本，而且可以在贴附薄膜层之前对粘接层进行光照固化，这样只需要进行面固化、不需要进行侧固化，就可以实现较好的光照固化效果。
实施例2：
如图2所示，本实施例提供一种显示面板100，其划分为显示区以及在显示区外围包围该显示区的非显示区。显示面板100包括：显示基板1；设置于显示基板1的显示侧并与显示基板1对盒设置的上层基板3；以及设置在上层基板3与显示基板1之间的粘接层2。显示面板100还包括薄膜层31，其设置于上层基板3的远离显示基板1一侧，薄膜层31的对应于非显示区的区域为不透明区、对应于显示区的区域为透明区。
具体地，薄膜层31通过可透光的胶材料粘附在上层基板3的远离显示基板1的一侧上。可透光的胶材料优选为OCA光学胶。
薄膜层31的透明区对应于显示面板100的显示区，其采用透明材料形成，优选采用PET材料或TAC材料形成的透明薄膜来构成薄膜层31的透明区；薄膜层31的不透明区设置有不透明的材料，并且优选地为能够用于制作黑矩阵的材料，以使薄膜层31上的不透明区可以实现现有技术中黑矩阵的遮挡金属走线、定义显示区和装饰等作用。这样，显示面板100中没有采用现有技术中内嵌的黑矩阵结构，而是仅在薄膜层31中设置不透明区，使结构简化、制备工艺简单。
用于粘合显示基板1与上层基板3的粘接层2优选采用OCA光学胶或者OCR光学胶形成，相应地，在显示基本1与上层基板3贴合后并在在贴附薄膜层31之前采用UV微粒子对OCA光学胶或者OCR光学胶进行光照固化，即可得到粘接效果很好的粘接层2。
本实施例中的显示面板能够实现和现有技术的显示面板相同的功能，因而适用范围广泛。例如，显示面板100可以是仅有显示功能的液晶面板，相应地，显示基板1为液晶基板，上层基板3为透明玻璃盖板，其贴合结构与图2所示的贴合结构相同或大致相同；或者，显示面板100可以是兼具显示功能和触控功能的液晶触控面板，相应地，显示基板1为液晶基板，上层基板3为触控屏，其贴合结构与图2所示的贴合结构相同或大致相同。例如，显示面板100还可以是仅有显示功能的OLED面板，相应地，显示基板1为OLED基板，上层基板3为透明玻璃盖板，其贴合结构与图2所示的贴合结构相同或大致相同；或者，显示面板100可以是兼具显示功能和触控功能的OLED触控面板，相应地，显示基板1为OLED基板，上层基板3为触控屏，其贴合结构与图2所示的贴合结构相同或大致相同。
容易理解的是，本实施例中的显示面板也可以为其它还未提到的面板，只要这些面板采用类似于本实施例中带有不透明区的薄膜层以替换现有技术中的黑矩阵，均应该属于本发明的保护范围。
实施例3：
本实施例提供一种显示面板的制备方法，用于形成实施例2中的显示面板。
参照图2、图3和图4，该显示面板的制备方法包括如下所述的步骤S1和步骤S2。
在步骤S1中，如图3所示，将显示基板1与上层基板3通过粘接层2粘合，待形成的显示面板划分为显示区以及在显示区外 围包围该显示区的非显示区，粘接层2设置在显示基板1和上层基板3之间对应于显示区和非显示区的区域内。
具体地，步骤S1可包括：清洗显示基板1和上层基板3上将要接触OCA光学胶或者OCR光学胶的表面，即显示基板1与上层基板3相粘接的表面；在显示基板1的将要粘接上层基板3的一面(或者在上层基板3的将要粘接显示基板1的一面)涂覆OCA光学胶或者OCR光学胶；预固化上述OCA光学胶或者OCR光学胶；将上层基板3与显示基板1贴合使得OCA光学胶或OCR光学胶介于两者之间；采用UV微粒子从上层基板3一侧向OCA光学胶或者OCR光学胶照射，以使得OCA光学胶或者OCR光学胶固化形成粘接层2，即如图4所示，只采用面固化光源7以面固化的方式形成粘接层2，从而使上层基板3与显示基板1粘合。
在步骤S2中，在上层基板3远离显示基板1的一侧贴附薄膜层31，薄膜层31的对应于非显示区的区域为不透明区、对应于显示区的区域为透明区，从而形成实施例2中如图2所示的显示面板100。
具体地，步骤S2可包括：清洗上层基板3远离显示面板1的一侧；以及在上层基板3或薄膜层31上涂覆OCA光学胶或者OCR光学胶。这里优选采用OCA光学胶，因为上层基板3与薄膜层31之间需要的粘接力不大，所以，只需直接涂覆OCA光学胶，然后将上层基板3与薄膜层31粘合，即可满足使用要求。当然，这里也可以采用UV微粒子对OCA光学胶进行光照固化，以提高粘接力；也可以采用OCR光学胶，然后采用UV微粒子对OCR光学胶进行光照固化以粘合上层基板3与薄膜层31，具体方式与形成粘接层2方式相同，在这里不再赘述。
本实施例中的显示面板的制备方法，省去了制作现有技术中内嵌的黑矩阵的印刷、曝光、显影的步骤，简化了制作工艺，节约了制作成本；更重要的是，由于粘结后的显示基板与上层基板不会阻碍用于固化的UV微粒子照射至形成粘接层的OCA光学胶或OCR光学胶，从而只需对OCA光学胶或OCR光学胶进行面固 化而不需要进行侧固化，就能起到较好的光照固化效果，进一步简化了制备工艺。
容易理解的是，本实施例中的显示基板1可以为液晶显示基板或OLED显示基板，上层基板3可以为触控屏或透明玻璃盖板，相应的制备方法与上述方法相同，在此不再赘述。
实施例4：
本实施例提供了一种显示装置，其包括上述任意一种显示面板以及边框，所述边框设置在显示面板外侧，边框的高度大于显示面板中的显示基板的厚度。因为本实施例中形成粘接层2的OCA光学胶或者OCR光学胶不需要进行侧固化，可以将粘接层2设置于边框的内部，即将边框的高度设计成大于显示基板的厚度，这样能够降低显示基板漏光的风险。
本实施例中的显示装置所包括的显示面板可以为普通液晶面板、液晶触控面板或OLED面板。
以本实施例中的显示面板为液晶触控面板为例，如图5所示，该显示装置包括边框200和显示面板100。显示面板100包括显示基板1、粘接层2、上层基板3和薄膜层31。显示基板1包括液晶盒11、背光模组12；液晶盒11与背光模组12通过粘接组件300封装在边框200内。具体地，粘接组件300的一端粘连在显示基板1的底面，接着粘接组件300经边框200的外侧，将其另一端粘连在薄膜层31的上表面。例如，粘接组件300可以是胶带。
在现有的液晶触控面板中，粘接层由于必须进行侧固化处理，因而不能处在边框内部，即边框的高度H不能大于显示基板的厚度h，否则侧固化采用的光照就会被边框阻挡而无法照射到粘接层。这种情况下，边框无法设置为高于显示基板的厚度，从而使得显示基板存在漏光的风险。
相比现有技术，本实施例中的显示装置所包括的显示面板100在制备过程中无需对粘接层2进行侧固化。因此，在本实施例的显示装置中，可以使得边框200的高度H大于显示基板1的厚度 h，从而使显示基板1处于边框200的内部，降低了显示基板1漏光的风险。
本实施例中的显示装置因为采用了上述显示面板，不仅简化了制备工艺、节约了成本，还可以将边框的高度设计得更大以降低显示基板漏光的风险。
容易理解的是，所述显示装置还可以用于构成其它具有显示功能的装置中，例如：电子纸、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。
可以理解的是，以上实施方式仅仅是为了说明本发明的原理而采用的示例性实施方式，然而本发明并不局限于此。对于本领域内的普通技术人员而言，在不脱离本发明的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本发明的保护范围。

Claims (12)

  1. 一种显示面板，划分为显示区以及在所述显示区外围包围所述显示区的非显示区，所述显示面板包括：
    显示基板；
    上层基板，其设置于所述显示基板的显示侧，并与所述显示基板对盒设置；以及
    粘接层，其设置在所述上层基板与所述显示基板之间，
    其中，所述显示面板还包括薄膜层，其设置于所述上层基板的远离所述显示基板一侧，所述薄膜层的对应于所述非显示区的区域为不透明区、对应于所述显示区的区域为透明区。
  2. 根据权利要求1所述的显示面板，其中，所述粘接层采用OCA光学胶或者OCR光学胶形成。
  3. 根据权利要求1所述的显示面板，其中，所述薄膜层的透明区采用透明材料形成，并且所述薄膜层的不透明区设置有不透明的材料。
  4. 根据权利要求3所述的显示面板，其中，所述透明材料包括PET材料或TAC材料，所述不透明材料包括能够用于制作黑矩阵的材料。
  5. 根据权利要求1-4中任一项所述的显示面板，其中，所述薄膜层通过OCA光学胶贴合在所述上层基板上。
  6. 根据权利要求1-4中任一项所述的显示面板，其中，所述显示基板为液晶显示基板或OLED显示基板，所述上层基板为触控屏或透明玻璃盖板。
  7. 一种显示装置，包括权利要求1-6中任一项所述的显示面板以及边框，所述边框设置在所述显示面板外侧，所述边框的高度大于所述显示面板中的显示基板的厚度。
  8. 根据权利要求7所述的显示装置，还包括粘接组件，所述显示面板通过所述粘接组件封装在所述边框内侧。
  9. 一种显示面板的制备方法，其中，所述显示面板划分为显示区以及在所述显示区外围包围所述显示区的非显示区，所述方法包括以下步骤：
    将显示基板与上层基板通过粘接层粘合，所述粘接层设置于所述显示区与所述非显示区；以及
    在所述上层基板的远离所述显示基板的一侧贴附薄膜层，所述薄膜层的对应于所述非显示区的区域为不透明区、对应于所述显示区的区域为透明区。
  10. 根据权利要求9所述的显示面板的制备方法，其中，将显示基板与上层基板通过粘接层粘合的步骤包括：
    在所述显示基板或所述上层基板的一侧涂覆OCA光学胶或者OCR光学胶；
    预固化所述OCA光学胶或者所述OCR光学胶；
    将所述上层基板与所述显示基板贴合，使得所述OCA光学胶或所述OCR光学胶介于所述上层基板与所述显示基板之间；以及
    采用UV微粒子照射、固化所述OCA光学胶或者OCR光学胶，以形成所述粘接层，其使得所述上层基板与所述显示基板粘合。
  11. 根据权利要求10所述的显示面板的制备方法，其中，采用UV微粒子照射、固化所述OCA光学胶或者OCR光学胶的步骤包括：
    采用UV微粒子从所述上层基板一侧向所述OCA光学胶或者OCR光学胶照射，使所述OCA光学胶或者OCR光学胶固化以形成所述粘接层。
  12. 根据权利要求9所述的显示面板的制备方法，其中，在所述上层基板的远离所述显示基板的一侧贴附薄膜层的步骤包括：
    在所述上层基板或所述薄膜层上涂覆OCA光学胶或者OCR光学胶；以及
    将所述上层基板与所述薄膜层粘合。
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