KR910006760A - 막과 광복굴절장치 그리고 이를 이용한 액정표시장치 - Google Patents

막과 광복굴절장치 그리고 이를 이용한 액정표시장치 Download PDF

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KR910006760A
KR910006760A KR1019900014894A KR900014894A KR910006760A KR 910006760 A KR910006760 A KR 910006760A KR 1019900014894 A KR1019900014894 A KR 1019900014894A KR 900014894 A KR900014894 A KR 900014894A KR 910006760 A KR910006760 A KR 910006760A
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liquid crystal
pair
display device
crystal display
substrates
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KR1019900014894A
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쥰이찌 히라까따
카쯔미 콘도오
야스시 로미오까
슈우지 이마제끼
요시오 타니구찌
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미따 가쯔시게
가부시기가이샤 히다찌세이사구쇼
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Publication of KR910006760A publication Critical patent/KR910006760A/ko

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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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • 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
    • 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
    • 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
    • G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/139—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
    • G02F1/1396—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell
    • G02F1/1397—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell the twist being substantially higher than 90°, e.g. STN-, SBE-, OMI-LC 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
    • 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
    • G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
    • G02F1/133565—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements inside the LC elements, i.e. between the cell substrates
    • 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
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • G02F1/133631—Birefringent elements, e.g. for optical compensation with a spatial distribution of the retardation value
    • 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
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • G02F1/133638—Waveplates, i.e. plates with a retardation value of lambda/n
    • 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
    • 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
    • G02F2203/00—Function characteristic
    • G02F2203/02—Function characteristic reflective
    • 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
    • G02F2413/00—Indexing scheme related to G02F1/13363, i.e. to birefringent elements, e.g. for optical compensation, characterised by the number, position, orientation or value of the compensation plates
    • G02F2413/01—Number of plates being 1

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

Abstract

내용 없음

Description

막과 광복굴절장치 그리고 이를 이용한 액정표시장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제3도는 액정표시장치의 부분에 대한 분해도.
제4도는 상이한 개별색을 생성할수 있는 세층을 중첩하므로써 8색을 형성하는 것을 도시한 도면.
제5도 내지 제7도는 세액정표시장치(부분적으로) 및 그들의 기능에 대한 분해도.

Claims (21)

  1. 한쌍의 기판과, 적어도 한쪽이 투명한 한쌍의 전극구조와, 상기 한쌍의 전극과 기판사이에 샌드위치된 액정물질과, 스페이서를 바깥쪽으로부터 안쪽으로 샌드위치 배치하여 구성되고, 상기 액정물질에 상기 전극구조에 의해 전계를 가하므로써 표시가 실행되는 액정표시장치에 있어서, 복굴절성을 가지는 적어도 하나의 막을 상기 한쌍의 기판의 샌드위치시킨 것을 특징으로 하는 액정표시장치.
  2. 제1항에 있어서, 상기 복굴절성을 가지는 막이 2종류이상, 상기 액정물질과 상기 기판의 한쪽의 사이에 샌드위치되어 있는 것을 특징으로 하는 액정표시장치.
  3. 제1항에 있어서, 상기 전극구조가 스트라이프형상이고, 상기 한쌍의 기판에 배치된 스트라이프 전극을 상호 교차시키므로써 복수의 화소를 형성하고, 상기 복굴절성을 가진 막을 가지는 화소, 복굴절성을 가지지 않는 화소 및 상이한 복굴절성을 가진 막을 가지는 화소를 혼합한 것을 특징으로 하는 액정표시장치.
  4. 제1항 내지 제3항중 어느 한 항에 있어서, 제1의 편광판으로 구성되며, 상기 복굴절성을 가지는 막의 광측과 적어도 제1의 편광판의 편광축 또는 흡수축에 의해 이루는 각도는 10°내지 80°의 사이인 것을 특징으로 하는 액정표시장치.
  5. 제1항 내지 제3항중 어느 한 항에 있어서, 상기 복굴절성을 가진 막은, 대략 한축방향으로 배일한 폴리디아 세틸렌막을 요오드를 도우프하여 거의 무색 투명으로 한 것을 특징으로 하는 액정표시장치.
  6. 제4항에 있어서, 상기 각도가 거의 45°인 것을 특징으로 하는 액정표시장치.
  7. 제1항 내지 제5항중 어느 한 항에 있어서, 상기 액정물질의 정의, 유전이동방성을 가지고 선광성물질이 첨가된 네마틱액정이며, 배향막 또는 표면의 작용에 의해 두께방향으로 비틀린 나선구조가 유도된 것을 특징으로 하는 액정표시장치.
  8. 제7항에 있어서, 제2의 편광판이 상기 한쌍의 기판의 바깥쪽으로 설치되고, 상기 한쌍의 기판과 상기 제2의 편광판의 사이에, 네마틱액정을 샌드위치된 다른 한쌍의 기판을 삽입하고, 상기 다른 한쌍의 기판사이의 네마틱 액정물질에 선광물질이 첨가되고, 다른 한쌍의 기판 사이에 설치된 배향막 및 선광물질은 고유의 비틀림력과 상기 한쌍의 기판사이의 액정물질의 나선형방향과 역방향의 비틀림구조를 유도하고, 네마틱액정을 샌드위치한 상기 다른 한쌍의 기판이 액정물질의 샌드위치한 상기 한쌍의 기판에 의해 생긴 광학적 위상차를 보상하는 것을 특징으로 하는 액정표시 장치.
  9. 제7항 또는 제8항에 있어서, 상기 한쌍의 기판 사이에 배향막계면과 액정분자가 이루는 프리틸트각도가 상기 제2의 편광판에 근접한 쪽이 다른쪽보다 큰 것을 특징으로 하는 액정표시장치.
  10. 제1항 내지 제5항중 어느 한 항에 있어서, 상기 액정물질의 강유전성액정인 것을 특징으로 하는 액정표시장치.
  11. 거의 투명한 광을 사용하는 고체층형 구조로 구성되고, 상기 구조내에는 적어도 2개의 다른 복굴절성의 영역 패턴이 존재하는 것을 특징으로 하는 광복굴절장치.
  12. 제11항에 있어서, 다수의 화소스폿이 상기 패턴을 형성하고, 3개의 다른 복굴절성을 가진 화소스폿이 상기 패턴을 형성하는 것을 특징으로 하는 광복굴절장치.
  13. 제11항 또는 제12항에 있어서, 상기 고체층형구조가 각각 적어도 2개의 다른 복굴절성의 역역패널을 가진 적어도 2개의 중첩막으로 이루어진것을 특징으로 하는 광복굴절장치.
  14. 제11항 내지 제13항중 어느 한 항에 있어서, 상기 고체층형구조가 소정의 영역에는 복굴절성이 있고 다른 소정의 영역에는 복굴절성이 없는 폴리디아세틸렌막으로 구성되어 있는 것을 특징으로 하는 광복굴절장치.
  15. 제11항 내지 제14항중 어느 한 항에 있어서, 광절환소자, 특히 상기 다른 복굴절성의 결과 생긴 광이 전달되는 온위치와 오프위치 사이에 상기 영역의 절환을 허용하도록 하는 방법으로 적어도 약간의 상기 영역과 결합되어 있는 액정소자로 구성된 것을 특징으로 하는 광복굴절장치.
  16. 한쌍의 기판과 한쌍의 전극구조와, 액정층과 액정표시장치의 광경도 내에 배치된 제11항 내지 제15항중 어느 한 항으로 정의된 광복굴절장치가 샌드위치구조로 구성되어 있는 액정표시장치.
  17. 제16항에 있어서, 상기 전극구조가 화소패턴을 형성하고, 상기 다른 복굴절성의 영역패턴과 상기 화소패턴이 대체로 상호 일치하고, 복굴절성의 한 형태 또는 복굴절성 조합의 한 형태를 가진 화소가 주기적으로 반복구조내에 배치되어 있는 것을 특징으로 하는 액정표시장치.
  18. 제16항 또는 제17항에 있어서, 전극주조는 주기적으로 액정화소를 규정하는 평행전극 스트라이프 구조이고, 적어도 2개의 다른 복굴절성의 영역패턴은 매칭주기성인 것을 특징으로 하는 액정표시장치.
  19. 주로 폴리디아세틸렌으로 구성되어 있는 막에 있어서, 폴리디아세틸렌 분자가 소정의 한방향으로 배향되어 있고, 상기 막이 대체로 무채색의 투명하고 복굴절성이며, 접착성을 가지는 것을 특징으로 하는 막.
  20. 상기 막은 적어도 하나가 투명한 두층사이에 접착성을 첨가하지 않고 샌드위치되는 것을 특징으로 하는 막.
  21. 제20항에 있어서, 상기 두층은 액정표시장치의 일부인 것을 특징으로 하는 막.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019900014894A 1989-09-20 1990-09-20 막과 광복굴절장치 그리고 이를 이용한 액정표시장치 KR910006760A (ko)

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