KR980003710A - Liquid crystal display element - Google Patents

Liquid crystal display element Download PDF

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Publication number
KR980003710A
KR980003710A KR1019960024501A KR19960024501A KR980003710A KR 980003710 A KR980003710 A KR 980003710A KR 1019960024501 A KR1019960024501 A KR 1019960024501A KR 19960024501 A KR19960024501 A KR 19960024501A KR 980003710 A KR980003710 A KR 980003710A
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KR
South Korea
Prior art keywords
liquid crystal
crystal display
display device
rubbed
display element
Prior art date
Application number
KR1019960024501A
Other languages
Korean (ko)
Other versions
KR100213979B1 (en
Inventor
김향율
이승희
박한준
Original Assignee
김주용
현대전자산업 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 김주용, 현대전자산업 주식회사 filed Critical 김주용
Priority to KR1019960024501A priority Critical patent/KR100213979B1/en
Publication of KR980003710A publication Critical patent/KR980003710A/en
Application granted granted Critical
Publication of KR100213979B1 publication Critical patent/KR100213979B1/en

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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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/13378—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
    • G02F1/133784—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation by rubbing
    • 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

Abstract

본 발명은 액정 표시 소자에 관한 것으로, 보다 구체적으로는, 광시약각을 확보할 수 있는 액정 표시 소자에 관한 것으로, 본 발명의 액정 표시 소자는, 대향하는 상, 하부 기판, 상부 기판의 하단면과 하부 기판의 상단면에 각각 형성된 전극 상하간에, 180°방향으로 러빙된 배향막, 상, 하부기판사이에 봉입되어 전압의 인가시 러빙된 방향으로 구동되는 액정을 포함한다. 본 발명에 따르면, 액정과 배향막 표면간의 상호 작용 및 액정이 지니고 있는 프리틸트에 의한 시야각의 협소해짐을 방지하기 위하여, 프리틸트각이 0°에 가깝도록 180°로 배향막을 러빙하고, 전장 인가시, 음의 유전 이방성을 갖는 액정들이 △nd=λ/2조건에서 최대광 투과 특성을 보이도록 배열하여, 시야각에 따른 굴절율 값을 일치시킴으로써, 그레이스케일 인버젼이 없는 넓은 시야각 특성을 갖는 액정 표시 소자가 달성된다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device capable of securing a light reagent angle, And upper and lower electrodes formed on the upper surface of the lower substrate, an alignment layer rubbed in the direction of 180 DEG, and a liquid crystal sealed in between the upper and lower substrates and driven in a rubbed direction when a voltage is applied. According to the present invention, in order to prevent a narrowing of the viewing angle due to the interaction between the liquid crystal and the surface of the alignment film and the viewing angle due to the pre-tilt carried by the liquid crystal, the alignment film is rubbed at 180 ° so that the pretilt angle approaches 0 °, , Liquid crystal displays having negative dielectric anisotropy are arranged so as to exhibit the maximum light transmittance characteristics under the condition of? Nd =? / 2, and the refractive index values according to the viewing angles are matched, whereby a liquid crystal display device having a wide viewing angle characteristic without grayscale inversion .

Description

액정 표시 소자Liquid crystal display element

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제2도는 본 발명에 따라 형성된 액정 표시 소자의 전압 무인가시 평광판이 부착되지 않았을 때의 액정의 상태를 나타낸 단면도.FIG. 2 is a sectional view showing the state of the liquid crystal when the voltage unattached visible light plate of the liquid crystal display element formed according to the present invention is not attached.

제3도는 본 발명에 따라 형성된 액정 표시 소자의 전압 인가시 액정의 상태를 나타낸 단면도.FIG. 3 is a sectional view showing the state of the liquid crystal when a voltage is applied to a liquid crystal display element formed according to the present invention; FIG.

Claims (9)

컬러 필터 및 공통 전극이 구비된 상부기판; 상기 상부 기판과 대향하고 박막 트랜지스터 및 화소 전극이 구비된 하부 기판; 상기 상부 기판의 하단과 하부 기판의 상단에 형성되는 180° 방향으로 러빙된 배향막; 상기상, 하부 기판 사이에 봉입되어 전압의 인가시 상기 배향막의 러빙된 방향으로 구동되는 액정을 포함하는것을 특징으로 하는 액정 표시 소자.An upper substrate provided with a color filter and a common electrode; A lower substrate facing the upper substrate and having a thin film transistor and a pixel electrode; An orientation film rubbed in a direction of 180 degrees formed on a lower end of the upper substrate and an upper end of the lower substrate; And a liquid crystal sealed between the upper and lower substrates and driven in a rubbed direction of the alignment layer upon application of a voltage. 제1항에 있어서, 상기 액정은 전압의 무인가시, 다중 도메인이 형성됨을 특징으로 하는 액정 표시 소자.The liquid crystal display device according to claim 1, wherein the liquid crystal has a plurality of domains, wherein the voltage is unattended. 제1항 또는 제2항에 있어서, 상기 액정은 음의 유전율 이방성 특성을 갖는 물질인 것을 특징으로 하는 액정 표시 소자.The liquid crystal display element according to claim 1 or 2, wherein the liquid crystal is a material having a negative dielectric anisotropy property. 제1항에 있어서, 상기 액정은 네메틱 액정에 UV에 경화되는 모노머와 소량의 광 활성화제가 포함된 물질인 것을 특징으로 하는 액정 표시 소자.The liquid crystal display according to claim 1, wherein the liquid crystal is a material comprising a nematic liquid crystal with a UV-curable monomer and a small amount of a photoactivator. 제1항에 있어서, 상기 하부 기판에는 박막 트랜지스터 및 화소 전극이 형성되고, 상부 기판에는 컬러 필터와, 블랙 매트릭스 및 공통 전극이 형성되는것을 특징으로 하는 액정 표시 소지.The liquid crystal display as claimed in claim 1, wherein a thin film transistor and a pixel electrode are formed on the lower substrate, and a color filter, a black matrix and a common electrode are formed on the upper substrate. 제1항 또는 제5항에 있어서, 상기 박막 트랜지스터가 형성된 하부 기판의 배면과, 커럴 필터와, 블랙 매트릭스 및 공통 전극이 형성된 상부기판의 배면에 편광판을 설치하는 것을 특징으로하는 액정 표시 소자.The liquid crystal display device according to claim 1 or 5, wherein a polarizing plate is provided on a rear surface of the lower substrate on which the thin film transistor is formed, a rear surface of the upper substrate on which the black filter and the black matrix and the common electrode are formed. 제6항에 있어서, 상기 편광판은 배향막의 러빙 방향과 45°의 각도를 갖도록 형성되는것을 특징으로하는 액정 표시 소자.The liquid crystal display element according to claim 6, wherein the polarizing plate is formed to have an angle of 45 ° with the rubbing direction of the alignment film. 제7항에 있어서, 상기 상, 하부 기판에 설치되는 편광판은 서로 크로스하는것을 특징으로 하는 액정 표시 소자.The liquid crystal display element according to claim 7, wherein the polarizing plates provided on the upper and lower substrates cross each other. 제1항, 제2항 및 제4항 중 어느 한 항에 있어서, 상기 액정은 네메틱 상태에서 UV를 조사하여 고분자 네트워크에 의한 다중 도메인을 형성하는것을 특징으로 하는 액정 표시 소자.The liquid crystal display device according to any one of claims 1, 2, and 4, wherein the liquid crystal is irradiated with UV light in a nematic state to form multiple domains by a polymer network. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960024501A 1996-06-27 1996-06-27 Liquid crystal device KR100213979B1 (en)

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KR1019960024501A KR100213979B1 (en) 1996-06-27 1996-06-27 Liquid crystal device

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KR100213979B1 KR100213979B1 (en) 1999-08-02

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100486799B1 (en) * 1997-04-24 2005-06-16 산요덴키가부시키가이샤 Reflection-type liquid crystal display apparatus
KR100679918B1 (en) * 2000-02-14 2007-02-07 엘지.필립스 엘시디 주식회사 Method for fabricating array substrate for Liquid crystal display device with wide viewing angle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100486799B1 (en) * 1997-04-24 2005-06-16 산요덴키가부시키가이샤 Reflection-type liquid crystal display apparatus
KR100679918B1 (en) * 2000-02-14 2007-02-07 엘지.필립스 엘시디 주식회사 Method for fabricating array substrate for Liquid crystal display device with wide viewing angle

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Publication number Publication date
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