KR950033573A - LCD and its manufacturing method - Google Patents

LCD and its manufacturing method Download PDF

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KR950033573A
KR950033573A KR1019950005399A KR19950005399A KR950033573A KR 950033573 A KR950033573 A KR 950033573A KR 1019950005399 A KR1019950005399 A KR 1019950005399A KR 19950005399 A KR19950005399 A KR 19950005399A KR 950033573 A KR950033573 A KR 950033573A
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liquid crystal
crystal display
pretilt angle
alignment
display device
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KR1019950005399A
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Korean (ko)
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히로무 테라오
슈이찌 오오하라
카쯔미 콘도
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카나이 쯔또무
가부시기가이샤 히다찌세이사구쇼
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Publication of KR950033573A publication Critical patent/KR950033573A/en

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    • 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
    • G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
    • 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
    • G02F1/1337—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
    • G02F1/133788—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 light irradiation, e.g. linearly polarised light photo-polymerisation
    • 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
    • G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
    • G02F1/133761—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle with different pretilt angles

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

Abstract

액정표시장치는 전극상에 형성된 배향막을 구비하고, 상기 배향막은 고프리틸트각부분과 저프리틸트각부분을 지님으로써, 본 발명의 액정표시장치는 넓은 시약각을 보인다.The liquid crystal display has an alignment film formed on an electrode, and the alignment film has a high pretilt angle portion and a low pretilt angle portion, whereby the liquid crystal display device of the present invention exhibits a wide reagent angle.

Description

액정표시장치 및 그 제조방법LCD and its manufacturing method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제10도는 본 발명의 일실시예의 액정표시장치의 구성도, 제11도는 본 발명의 일실시예의 액정표시장치의 구성도, 제12도는 본 발명의 일실시예의 액정표시장치의 구성도.10 is a block diagram of a liquid crystal display device according to an embodiment of the present invention, FIG. 11 is a block diagram of a liquid crystal display device according to an embodiment of the present invention, and FIG. 12 is a block diagram of a liquid crystal display device according to an embodiment of the present invention.

Claims (20)

대향면상에 각각 전극을 가진 1쌍의 기판과, 상기 기판의 각 전극면에 형성된 배향막과, 상기 배향막사이에 삽입된 액정층과, 상기 액정층을 사이에 두고 배치된 편광자와, 상기 액정층에 전압을 인가하기 위한 구동회로를 구비한 액정표시장치에 있어서, 상기 배향막의 적어도 한쪽은 광조사에 의해 고프리틸트각을 지니는 부분과 저프리틸트각을 지니는 부분을 갖고 있어, 액정분자가 복수의 도메인으로 구성되는 것을 특징으로 하는 액정표시장치.A pair of substrates having electrodes on opposite surfaces, an alignment film formed on each electrode surface of the substrate, a liquid crystal layer interposed between the alignment films, a polarizer disposed with the liquid crystal layer interposed therebetween, A liquid crystal display device having a driving circuit for applying a voltage, wherein at least one of the alignment layers has a portion having a high pretilt angle and a portion having a low pretilt angle by light irradiation, whereby a plurality of liquid crystal molecules A liquid crystal display device comprising a domain. 제1항에 있어서, 상기 배향막에는 자외선을 조사하는 것을 특징으로 하는 액정표시장치.The liquid crystal display device according to claim 1, wherein the alignment layer is irradiated with ultraviolet rays. 대향면상에 각각 전극을 가진 1쌍의 기판과, 상기 기판의 각 전극상에 형성된 배향막과, 상기 배향막사이에 삽입된 액정층과, 상기 액정층을 사이에 두고 배치된 편광자와, 상기 액정층에 전압을 인가하기 위한 구동회로를 구비한 액정표시장치에 있어서, 상기 배향막의 적어도 한쪽의 일부에는 광에너지를 조사해서 다른쪽 배향막보다도 저 프리틸트각을 지니도록 하여, 액정분자의 배향이 복수의 도메인으로 구성되는 것을 특징으로 하는 액정표시장치.A pair of substrates having electrodes on opposing surfaces, an alignment film formed on each electrode of the substrate, a liquid crystal layer interposed between the alignment films, a polarizer disposed with the liquid crystal layer interposed therebetween, In a liquid crystal display device having a driving circuit for applying a voltage, at least one portion of the alignment layer is irradiated with light energy to have a lower pretilt angle than the other alignment layer, so that the alignment of the liquid crystal molecules is performed in a plurality of domains. Liquid crystal display, characterized in that consisting of. 대향면상에 각각 전극을 가진 1쌍의 기판과, 상기 기판의 각 전극상에 형성된 배향막과, 상기 배향막사이에 삽입된 액정층과, 상기 액정층을 사이에 두고 배치된 편광자와, 상기 액정층에 전압을 인가하기 위한 구동회로를 구비한 액정표시장치에 있어서, 상기 배향막의 적어도 한쪽은 인쇄법에 의해 고프리틸트각을 지니는 부분과 저프리틸트각을 지니는 부분을 부여하도록 형성되어, 액정분자의 복수의 도메인이 형성되는 것을 특징으로 하는 액정표시장치.A pair of substrates having electrodes on opposing surfaces, an alignment film formed on each electrode of the substrate, a liquid crystal layer interposed between the alignment films, a polarizer disposed with the liquid crystal layer interposed therebetween, A liquid crystal display device having a driving circuit for applying a voltage, wherein at least one of the alignment films is formed to give a portion having a high pretilt angle and a portion having a low free tilt angle by a printing method, And a plurality of domains are formed. 대향면상에 각각 전극을 가진 1쌍의 기판과, 상기 기판의 각 전극상에 형성된 배향막과, 상기 배향막사이에 삽입된 액정층과, 상기 액정층을 사이에 두고 배치된 편광자와, 상기 액정층에 전압을 인가하기 위한 구동회로를 구비한 액정표시장치에 있어서, 소정의 프리틸트각을 지니는 배향막을, 다른 프리틸트각을 지니는 다른쪽 대향막상에 부분적으로 도포하여,평면방향의 액정층에 복수의 도메인이 형성되는 것을 특징으로 하는 액정표시장치.A pair of substrates having electrodes on opposing surfaces, an alignment film formed on each electrode of the substrate, a liquid crystal layer interposed between the alignment films, a polarizer disposed with the liquid crystal layer interposed therebetween, In a liquid crystal display device having a driving circuit for applying a voltage, an alignment film having a predetermined pretilt angle is partially coated on the other opposing film having a different pretilt angle, and a plurality of liquid crystal layers in the planar direction are applied. Liquid crystal display, characterized in that the domain is formed. 대향면상에 각각 전극을 가진 1쌍의 기판과, 상기 각 전극상에 형성된 배향막과, 상기 배향막사이에 삽입된 액정층과, 상기 액정층을 사이에 두고 배치된 편광자와, 상기 액정층에 전압을 인가하기 위한 구동회로를 구비한 액정표시장치에 있어서, 배향막은, 고프리틸트각과 저프리틸트각을 발생시키는 복수의 고분자로 구성된 상분리형재료로 이루어져, 화소내에 복수의 도메인이 형성되는 것을 특징으로 하는 액정표시장치.A pair of substrates having electrodes on opposing surfaces, an alignment film formed on each electrode, a liquid crystal layer interposed between the alignment films, a polarizer disposed with the liquid crystal layer interposed therebetween, and a voltage applied to the liquid crystal layer. In a liquid crystal display device having a driving circuit for applying, the alignment layer is made of a phase-separated material composed of a plurality of polymers for generating a high pretilt angle and a low pretilt angle, and a plurality of domains are formed in the pixel. Liquid crystal display device. 대향면상에 각각 전극을 가진 1쌍의 기판과, 상기 기판의 각 전극상에 형성된 배향막과, 상기 배향막사이에 삽입된 액정층과, 상기 액정층을 사이에 두고 배치된 편광자와, 상기 액정층에 전압을 인가하기 위한 구동회로를 구비한 액정표시장치에 있어서, 상기 배향막의 적어도 한쪽은 배향막의 러빙강도를 변화시켜, 고프리틸트각을 지니는 부분과 저프리틸트각을 지니는 부분을 지니도록해서 액정분자의 복수의 도메인이 형성되는 것을 특징으로 하는 액정표시장치.A pair of substrates having electrodes on opposing surfaces, an alignment film formed on each electrode of the substrate, a liquid crystal layer interposed between the alignment films, a polarizer disposed with the liquid crystal layer interposed therebetween, In a liquid crystal display device having a driving circuit for applying a voltage, at least one of the alignment films changes the rubbing strength of the alignment film so as to have a portion having a high pretilt angle and a portion having a low pretilt angle. And a plurality of domains of molecules are formed. 제1항 내지 제7항중 어느 한 항에 있어서, 상기 한쌍의 기판중 한쪽 기판상의 고프리틸트각을 지니는 부분이 다른쪽 기판상의 저프리틸트각을 지니는 부분에 대향하고 있는 것을 특징으로 하는 액정표시장치.The liquid crystal display according to any one of claims 1 to 7, wherein a portion having a high pretilt angle on one of the pair of substrates faces a portion having a low pretilt angle on the other substrate. Device. 제1항 내지 제7항중 어느 한 항에 있어서, 액정조성물은 러빙방향과는 반대의 꼬임방향을 지닌 카이럴제를 함유하는 것을 특징으로 하는 액정표시장치.The liquid crystal display device according to any one of claims 1 to 7, wherein the liquid crystal composition contains a chiral agent having a twisting direction opposite to the rubbing direction. 제9항에 있어서, 액정층의 두께(d)와 카이럴피피치(P)와의 비(d/P)가 0.06∼0.15인 것을 특징으로 하는 액정표시장치.10. The liquid crystal display device according to claim 9, wherein the ratio (d / P) of the thickness d of the liquid crystal layer to the chiral pitch P is 0.06 to 0.15. 제1항에 있어서, 상기 배향막에 자외선을 조사한 후, 러빙처리를 행하는 것을 특징으로 하는 액정표시장치.The liquid crystal display device according to claim 1, wherein after the ultraviolet ray is irradiated to the alignment layer, a rubbing treatment is performed. 제1항 내지 제7항중 어느 한 항에 있어서, 상기 복수의 도메인이 리버스틸트모드인 것을 특징으로 하는 액정표시장치.The liquid crystal display device according to any one of claims 1 to 7, wherein the plurality of domains are in reverse tilt mode. 제1항 내지 제7항중 어느 한 항에 있어서, 액정분자의 배향이 1화소내에서 3개이상으로 분할되어 있는 것을 특징으로 하는 액정표시장치.The liquid crystal display device according to any one of claims 1 to 7, wherein the liquid crystal molecules are divided into three or more in one pixel. 제1항 내지 제7항중 어느 한 항에 있어서, 저프리틸트각이 0∼2°이고, 고프리틸트각과 저프리틸트각과의 차가 3°이상인 것을 특징으로 하는 액정표시장치.The liquid crystal display device according to any one of claims 1 to 7, wherein the low pretilt angle is 0 to 2 degrees and the difference between the high pretilt angle and the low pretilt angle is 3 degrees or more. 제1항 내지 제7항중 어느 한 항에 있어서, 상기 전극의 한쪽에 매트릭스형상으로 액티브소자가 배치되어 있는 것을 특징으로 하는 액정표시장치.The liquid crystal display device according to any one of claims 1 to 7, wherein active elements are arranged in a matrix on one side of the electrode. 전극을 형성하는 공정과, 상기 전극상에 배향막을 형성하는 공정과, 상기 배향막에 광을 조사해서 상이한 프리틸트각을 지닌 부분을 발생시키는 공정과, 상기 배향막을 러빙처리하는 공정을 구비한 액정표시장치의 제조방법.A liquid crystal display comprising a step of forming an electrode, a step of forming an alignment film on the electrode, a step of irradiating light to the alignment film to generate a portion having a different pretilt angle, and a step of rubbing the alignment film Method of manufacturing the device. 인쇄법 의해 전극상에 배형막을 형성하여 고프리틸트각을 지닌 부분과 저프리틸트각을 지닌 부분을 발생시키는 공정과, 상기 배향막을 표면을 러빙처리하는 공정을 구비한 액정표시장치의 제조방법.A method of manufacturing a liquid crystal display device, comprising: forming a double layer on an electrode by a printing method to generate a portion having a high pretilt angle and a portion having a low pretilt angle; and a step of rubbing the surface of the alignment layer. 기판상에 전극을 형성하는 공정과, 하나의 타입의 배향재료를 다른 타입의 배향재료상에 도포하는 부분 인쇄법에 의해 고프리틸트각을 지닌 부분과 저프리틸트각을 지닌 부분을 가진 배향막을 형성하는 공정과, 상기 배향막의 표면을 러빙처리하는 공정을 구비한 액정표시장치의 제조방법.Forming an alignment film having a portion having a high pretilt angle and a portion having a low pretilt angle by a process of forming an electrode on a substrate and a partial printing method in which one type of alignment material is applied onto another type of alignment material; And a step of rubbing the surface of the alignment film. 기판상에 전극을 형성하는 공정과, 상기 전극상에 배향막을 형성하는 공정과, 러빙강도를 변화시켜 고프리틸트각을 지닌 부분과 저프리틸트각을 지닌 부분을 방생시키는 공정을 구비한 액정표시장치의 제조방법.A liquid crystal display comprising a process of forming an electrode on a substrate, a process of forming an alignment film on the electrode, and a process of generating a portion having a high pretilt angle and a portion having a low pretilt angle by varying rubbing strength Method of manufacturing the device. 기판상에 전극을 형성하는 공정과, 복수종류의 고분자의 혼합물을 상분리시켜 배향막재료를 제작하는 공정과, 상기 전극상에 상기 배향막재료를 도포해서 배향막을 형성하는 공정을 구비한 액정표시장치의 제조방법.Manufacture of a liquid crystal display device comprising the steps of forming an electrode on a substrate, a phase separation of a mixture of plural kinds of polymers to produce an alignment film material, and a step of coating the alignment film material on the electrode to form an alignment film. Way. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
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KR100462380B1 (en) * 1997-12-23 2005-04-06 비오이 하이디스 테크놀로지 주식회사 Rubbing method of vertical alignment mode liquid crystal display
KR100850737B1 (en) * 2001-05-21 2008-08-06 엘지디스플레이 주식회사 multi domain Liquid Crystal Display Device
KR100484851B1 (en) * 2001-09-11 2005-04-22 샤프 가부시키가이샤 Liquid Crystal Display Device, Optical Element, Method Of Fabricating The Liquid Crystal Display Device And Method Of Making The Optical Element

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