WO2020062435A1 - Panneau d'affichage à cristaux liquides et son procédé de fabrication - Google Patents

Panneau d'affichage à cristaux liquides et son procédé de fabrication Download PDF

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Publication number
WO2020062435A1
WO2020062435A1 PCT/CN2018/113671 CN2018113671W WO2020062435A1 WO 2020062435 A1 WO2020062435 A1 WO 2020062435A1 CN 2018113671 W CN2018113671 W CN 2018113671W WO 2020062435 A1 WO2020062435 A1 WO 2020062435A1
Authority
WO
WIPO (PCT)
Prior art keywords
substrate
frame sealant
frame
liquid crystal
sealant
Prior art date
Application number
PCT/CN2018/113671
Other languages
English (en)
Chinese (zh)
Inventor
白柏
Original Assignee
深圳市华星光电半导体显示技术有限公司
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 深圳市华星光电半导体显示技术有限公司 filed Critical 深圳市华星光电半导体显示技术有限公司
Publication of WO2020062435A1 publication Critical patent/WO2020062435A1/fr

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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
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • 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

Definitions

  • the invention relates to the technical field of liquid crystal display, in particular to a liquid crystal display panel and a method for manufacturing the same.
  • TFT-LCD Thin Film Transistor-Liquid Crystal Display
  • liquid crystal and frame sealant need to be dripped on the array substrate or color filter substrate, and then the two substrates are aligned to the box, and then the frame sealant is cured.
  • the function of the frame sealant is to bond the array substrate and the color filter substrate, and protect the middle liquid crystal from the outside air and water.
  • the curing process of the frame sealant is mainly divided into two steps: firstly, it is cured by UV for exposure, and then further cured by heating to achieve the purpose of complete curing.
  • FIGS. 1A-1C a schematic diagram of a manufacturing process of a conventional thin film transistor liquid crystal display panel.
  • an organic layer (PI) 12 and a seal 13 are coated on a substrate (assuming the substrate is a color filter substrate 11).
  • a liquid crystal (LC) 14 is dripped on the organic layer 12.
  • FIG. 1C after the two substrates are boxed, a liquid crystal 14 corresponding to the display area on the array substrate 15 is shielded by a UV mask 16, and then the ultraviolet light is irradiated on the substrate.
  • the frame sealant 13 is UV-cured.
  • the basic structure of the color filter substrate 11 is a color filter (CF) side glass substrate (Glass Substrate) 111, a black matrix (Black Matrix, BM for short), a color resist layer (R / G / B) 112, and a transparent conductive layer (ITO ) 113 and the like;
  • the basic structure of the array substrate 15 is composed of an array-side glass substrate 151 and a metal wiring layer (Metal) 152 and the like.
  • narrow bezels have gradually become the mainstream of display.
  • the black matrix and the frame sealant generally overlap each other. Since ultraviolet light cannot pass through the black matrix, the UV of the frame sealant can only be irradiated from the array substrate.
  • the narrow bezel further requires the frame sealant to be thinned, so that the area of the metal wiring on the array substrate is small, resulting in a tighter metal line arrangement at the periphery of the array substrate.
  • the object of the present invention is to provide a liquid crystal display panel and a method for preparing the same, which can sufficiently cure the frame sealant by ultraviolet, improve the liquid crystal pollution caused by insufficient UV curing of the frame sealant, and further improve the unevenness of the peripheral box of the display (Mura) and the liquid crystal. Puncture and other issues.
  • the present invention provides a method for preparing a liquid crystal display panel.
  • the method includes the following steps: providing a first substrate, coating an organic layer on a display area of the first substrate, and applying an organic layer on the organic layer;
  • the first frame sealant is coated on the periphery; the organic layer is masked by a first ultraviolet photomask, and the first frame sealant is irradiated with ultraviolet rays to ultraviolet cure the first frame sealant; Coating a second frame sealant on the periphery of the first frame sealant after ultraviolet curing; dripping liquid crystal on the organic layer; providing a second substrate, and pairing the second substrate with the first substrate
  • the cell is covered with a second ultraviolet photomask, and the second frame sealant is irradiated with ultraviolet rays to ultraviolet cure the second frame sealant.
  • the present invention also provides a method for preparing a liquid crystal display panel, which includes the following steps: providing a first substrate, coating an organic layer on a display area of the first substrate, and coating a periphery of the organic layer; Cloth first frame sealant; UV curing the first frame sealant; coating a second frame sealant on the periphery of the first frame sealant after ultraviolet curing; dripping liquid crystal on the organic layer Providing a second substrate, placing the second substrate and the first substrate in a box, and performing ultraviolet curing on the second frame sealant.
  • the present invention also provides a liquid crystal display panel.
  • the liquid crystal display panel includes: a first substrate having a display area; an organic layer corresponding to the display area on the first substrate; A first frame sealant on the periphery of the organic layer; a second frame sealer on the periphery of the first frame seal; a liquid crystal on the organic layer; The second frame sealant covers the second substrate of the liquid crystal.
  • the present invention first applies an inner ring frame sealant, and after the organic layer coating is completed, before the two substrates face the box, the inner ring frame sealant is UV irradiated to make the inner ring frame sealant completely After UV curing, the outer sealant is coated on the periphery of the inner sealant, followed by liquid crystal dripping and subsequent processes, which can fully UV cure the sealant and improve the situation due to the increase of metal lines around the array substrate. Next, the liquid crystal pollution caused by insufficient UV curing of the frame sealant further improves the problems of uneven thickness of the peripheral boxes of the display and puncture of the liquid crystal.
  • FIG. 1A-1C a schematic diagram of a manufacturing process of an existing thin film transistor liquid crystal display panel
  • FIG. 2 is a schematic flowchart of a method for manufacturing a liquid crystal display panel according to the present invention
  • FIG. 4 is a cross-sectional view of a liquid crystal display panel of the present invention.
  • the "first" or “down” of the second feature may include the first and second features in direct contact, and may also include the first and second features. Not directly, but through another characteristic contact between them.
  • the first feature is “above”, “above”, and “above” the second feature, including that the first feature is directly above and obliquely above the second feature, or merely indicates that the first feature is higher in level than the second feature.
  • the first feature is “below”, “below”, and “below” of the second feature, including the fact that the first feature is directly below and obliquely below the second feature, or merely indicates that the first feature is less horizontal than the second feature.
  • FIG. 2 is a schematic flowchart of a method for manufacturing a liquid crystal display panel according to the present invention
  • FIGS. 3A-3E are schematic views of a manufacturing process of a method for manufacturing a liquid crystal display panel according to the present invention.
  • the preparation method includes the following steps: S21: providing a first substrate, coating an organic layer on a display area of the first substrate, and coating a first frame sealant on the periphery of the organic layer; S22: The first frame sealant is UV-cured; S23: the periphery of the first frame sealant is coated with a second frame sealant; S24: a liquid crystal is dripped on the organic layer; S25: a first Two substrates, the second substrate and the first substrate are placed in a box, and then the second frame sealant is UV-cured.
  • step S21 providing a first substrate, coating an organic layer on a display area of the first substrate, and coating a first frame sealant on the periphery of the organic layer
  • 3A is a schematic diagram of applying an organic layer and a first frame sealant on a first substrate according to an embodiment of the present invention.
  • the organic layer 32 is coated on a region of the display area 310 of the first substrate 31; the first frame sealant 33 is coated on the periphery of the organic layer 32.
  • the organic layer 32 is made of an organic material.
  • the organic material may be, for example, polyimide (PI).
  • PI has the characteristics of high temperature resistance, wide use temperature range, no obvious melting point, high insulation performance, and stable dielectric constant.
  • the coating of the organic layer and the first frame sealant can refer to the prior art, and is not limited herein.
  • step S22 performing UV curing on the first frame sealant
  • FIG. 3B is a schematic diagram of the first frame sealant according to an embodiment of the present invention.
  • the organic layer 32 of the display area 310 may be shielded by a first UV mask 39, and the first frame sealant 33 may be irradiated with ultraviolet (UV) to perform ultraviolet irradiation on the first frame sealant 33.
  • UV ultraviolet
  • step S23 coating the periphery of the first frame sealant with a second frame sealant after UV curing
  • a second frame sealant after UV curing
  • the second frame sealant 34 is coated on the periphery of the first frame sealant 33 after UV curing.
  • the width of the second frame sealant 34 is greater than the width of the first frame sealant 33.
  • the width of the second frame sealant 34 may be equal to or smaller than the width of the first frame sealant 33.
  • the coating of the second frame sealant can refer to the prior art, and is not limited herein.
  • step S24 dripping liquid crystal on the organic layer
  • FIG. 3D is a schematic diagram of liquid crystal dripping according to an embodiment of the present invention.
  • the liquid crystal 35 is dripped on the organic layer 32 corresponding to the display area on the first substrate 31.
  • the liquid crystal dropping method can refer to the prior art, which is not limited herein.
  • FIG. 3E is a schematic diagram of two substrate-to-box and UV-curable second frame sealant according to an embodiment of the present invention. Specifically, after the second substrate 36 and the first substrate 31 face each other, the liquid crystal 35 in the display area 310 is blocked by a second UV mask 38, and then the second seal is irradiated with ultraviolet (UV).
  • the frame sealant 34 performs UV curing on the second frame sealant 34.
  • the two substrate-to-box process can refer to the prior art, which is not limited herein.
  • the first ultraviolet photomask 39 and the second ultraviolet photomask 38 may be the same ultraviolet photomask.
  • the first substrate 31 may be a color filter substrate.
  • the color filter substrate includes a color filter-side glass substrate 311, a black matrix (BM), a color resist layer (R / G / B) 312, and a transparent substrate.
  • the second substrate 36 may be an array substrate.
  • the array substrate includes an array-side glass substrate 361 and a metal wiring layer 362.
  • an inner ring frame sealant that is, the first frame sealant
  • the two substrates are aligned with the box, and the inner ring is aligned with the inner ring.
  • the frame sealant is irradiated with UV to completely cure the inner ring frame sealant.
  • the outer frame sealant is coated with a peripheral circle sealant (ie, the second frame sealant), and then the liquid crystal is applied. Infusion and subsequent processes.
  • the invention can sufficiently cure the frame sealant with ultraviolet light, improve the liquid crystal pollution caused by insufficient ultraviolet curing of the frame sealant due to the increase of metal lines around the array substrate, and further improve the problems of uneven thickness of the peripheral box of the display and puncture of the liquid crystal.
  • the liquid crystal display panel of the present invention includes a first substrate 31 having a display area 310, an organic layer 32 provided on the first substrate 31 corresponding to the display area 310, a first frame sealant 33 provided on the periphery of the organic layer 32, and A second frame sealant 34 on the periphery of the first frame seal 33, a liquid crystal 35 provided on the organic layer 32, a second substrate provided on the first frame seal 33 and the second frame seal 34 and covering the liquid crystal 35 36.
  • the first frame sealant 33 and the second frame sealant 34 are both UV-curable frame sealants.
  • the width of the second frame sealant 34 is greater than the width of the first frame sealant 33. In other embodiments, the width of the second frame sealant 34 may be equal to or smaller than the width of the first frame sealant 33.
  • the first substrate 31 is a color filter substrate
  • the second substrate 36 is an array substrate.
  • the color filter substrate includes a color filter side glass substrate 311, a black matrix 312, a transparent conductive layer 313, and the like.
  • the array substrate includes an array-side glass substrate 361, a metal wiring layer 362, and the like.
  • the liquid crystal display panel of the present invention improves the liquid crystal pollution caused by insufficient UV curing of the frame sealant due to the increase of metal lines around the array substrate, and further improves the problems of uneven thickness of the peripheral box of the display and puncture of the liquid crystal.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)

Abstract

La présente invention concerne un panneau d'affichage à cristaux liquides et son procédé de fabrication. Le procédé de fabrication comprend : la fourniture d'un premier substrat (31), l'application d'une couche organique (32) sur une région d'affichage (310) du premier substrat (31) et l'application d'un premier matériau d'étanchéité de cadre (33) sur la périphérie de la couche organique (32); la réalisation d'un durcissement UV sur le premier matériau d'étanchéité de cadre (33); l'application d'un second matériau d'étanchéité de cadre (34) à la périphérie du premier matériau d'étanchéité de cadre durci par UV (33); la distribution de cristaux liquides sur la couche organique (32); et la fourniture d'un second substrat (36), l'alignement du second substrat (36) avec le premier substrat (31) pour former une cellule et la réalisation d'un durcissement UV sur le second matériau d'étanchéité de cadre (34). L'invention permet un durcissement UV complet d'un matériau d'étanchéité de cadre, ce qui permet d'atténuer le problème de contamination de cristaux liquides provoquée par un durcissement par UV insuffisant d'un matériau d'étanchéité de cadre en raison d'une augmentation des fils métalliques à la périphérie d'un substrat de réseau et d'atténuer en conséquence les problèmes d'espaces de cellules non uniformes au niveau de la périphérie d'un dispositif d'affichage et l'effondrement du matériau d'étanchéité.
PCT/CN2018/113671 2018-09-28 2018-11-02 Panneau d'affichage à cristaux liquides et son procédé de fabrication WO2020062435A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811138406.0 2018-09-28
CN201811138406.0A CN109143693A (zh) 2018-09-28 2018-09-28 一种液晶显示面板及其制备方法

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WO2020062435A1 true WO2020062435A1 (fr) 2020-04-02

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WO (1) WO2020062435A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109917591A (zh) * 2019-03-21 2019-06-21 深圳市华星光电技术有限公司 液晶显示面板的制作方法
CN112285969A (zh) * 2020-12-09 2021-01-29 深圳市容大彩晶科技有限公司 液晶显示面板的制造方法1

Citations (5)

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CN1591111A (zh) * 2003-08-30 2005-03-09 鸿富锦精密工业（深圳）有限公司 液晶面板及其制造方法
CN1797153A (zh) * 2004-12-31 2006-07-05 Lg.菲利浦Lcd株式会社 液晶显示器件及其制造方法
CN101957512A (zh) * 2009-07-16 2011-01-26 北京京东方光电科技有限公司 液晶显示面板及其制造方法
CN105137671A (zh) * 2015-10-12 2015-12-09 京东方科技集团股份有限公司 液晶盒、液晶盒的制备方法以及显示面板
CN105892165A (zh) * 2016-06-27 2016-08-24 京东方科技集团股份有限公司 一种显示面板及其制备方法

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Publication number Priority date Publication date Assignee Title
US7295280B2 (en) * 2001-09-03 2007-11-13 Hannstar Display Corp. Method of manufacturing one drop fill liquid crystal display panel
KR101127591B1 (ko) * 2010-04-01 2012-03-23 삼성모바일디스플레이주식회사 평판 표시 장치 및 그 제조방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1591111A (zh) * 2003-08-30 2005-03-09 鸿富锦精密工业（深圳）有限公司 液晶面板及其制造方法
CN1797153A (zh) * 2004-12-31 2006-07-05 Lg.菲利浦Lcd株式会社 液晶显示器件及其制造方法
CN101957512A (zh) * 2009-07-16 2011-01-26 北京京东方光电科技有限公司 液晶显示面板及其制造方法
CN105137671A (zh) * 2015-10-12 2015-12-09 京东方科技集团股份有限公司 液晶盒、液晶盒的制备方法以及显示面板
CN105892165A (zh) * 2016-06-27 2016-08-24 京东方科技集团股份有限公司 一种显示面板及其制备方法

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