KR970701368A - 쌍안정 네마틱 액정장치(Bistable nematic liquid crystal devices) - Google Patents

쌍안정 네마틱 액정장치(Bistable nematic liquid crystal devices)

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Publication number
KR970701368A
KR970701368A KR1019960704456A KR19960704456A KR970701368A KR 970701368 A KR970701368 A KR 970701368A KR 1019960704456 A KR1019960704456 A KR 1019960704456A KR 19960704456 A KR19960704456 A KR 19960704456A KR 970701368 A KR970701368 A KR 970701368A
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liquid crystal
alignment
nematic
cell walls
lattice
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KR1019960704456A
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KR100321886B1 (ko
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게라드 맥도넬 다미안
존 타울러 마이클
스튜어트 반크로포드 마틴
가이피터브라이언브라운
Original Assignee
에스 알 스켈톤
더 시크러터리 오브 스테이트 포 디펜스
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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
    • G02F1/137—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
    • 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
    • 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
    • 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
    • G02F1/1391—Bistable or multi-stable liquid crystal 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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133765—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers without a surface treatment
    • 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
    • G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars

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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)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • Liquid Crystal (AREA)

Abstract

본 발명은 쌍안정하게 스위칭되는 상태를 갖는 네마틱 액정 장치를 제공한다. 장치는 전극 구조를 수반하고, 네마틱 액정 재료의 층을 감싸고 있는 두 개의 셀벽을 구성한다. 이중격자는 액정분자가 표면에서 한 방향으로 정열되는 종래의 표면에 액정 분자를 두 개의 다른 각 방향, 예를들어, 45°또는 90°떨어진 각 방향을 놓이게 하는 모양의 표면이다.
양 벽상에 이중격자를 갖는 셀에 있어서 양벽상에 두 개의 정렬 방향이 기록된다. 편광기는 스위칭된 배열중 하나에 평행한 일 편광기의 광축과 이에 수직한 광축을 갖는 셀의 전후방에 정렬된다. 예를들어, 물질이 두 개의 정렬 상태 사이에서 스위칭될 때 편광기는 빛을 차단하거나 투과시킨다. 이중 격자는 대칭 또는 비대칭이되며, 후자의 경우에 있어서, 많은 양의 표면 덜트 형상이 얻어진다. 양 셀벽상의 적당한 표면 틸트 현상은 양 스위칭된 상태에 퍼진 분자 구조를 준다. 퍼진 고조로, 장치는 전기적으로 굴절 전기 커플링을 사용하여 스위칭된다. 다른 구조로, 장치는 액정 재료속에 재료속에 카이랄 이온과 연결되는 dc 펄스를 사용하여 스위칭된다. 이중격자는 인터페로그래피, 포토리소그래피, 엠보싱, 룰링, 또는 캐리어층의 전사에 의해 생산된다. 일 셀벽상의 이중격자는 종래의 단일 격자 또는 예를들어 다른 셀벽상에 긁힘 정렬 처이와 결합한다. 이 경위에 있어서 재료는 양 스위칭된 상태에 있어서 꼬임을 일으킨다.

Description

쌍안정 네마틱 액정장치(Bistable nematic liquid crystal devices)
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 어드레스된 액정 디스플레이의 복합 메트리스의 평면도,
제2도의 디스플레이에 대한 단면도.

Claims (13)

  1. 액정 재료층을 둘러싸는 2개의 셀벽, 2개의 벽상의 전극 구조체, 액정 분자에 대해 정렬된 방향을 제공하는 2개의 셀벽상의 표면 정렬 및 액정 재료의 스위칭된 상태 사이를 구별하는 수단을 포함하는 쌍안정 네마틱 액정 장치에 있어서, 적절한 전기 신호가 전극상에 적응될 때, 2개의 다른 각 형성 정렬 방향을 선택하도록 액정 분자를 허용하는 하나 이사의 셀상의 표면 정렬 이중격자를 구비하는 것을 특징으로 하는 쌍안정 네마틱 액정 장치.
  2. 제1항에 있어서, 각각의 이중격자는 이중격자의 상대 에너지(A)가 0.8 보다 크고 1.2보다 작은 즉,0.8<A,1.2를 갖는 프로필을 갖는 것을 특징으로 하는 쌍안정 네마틱 액정 장치.
  3. 제1항에 있어서, 양 셀벽은 이중격자를 갖고, 양 셀벽의 2개의 정렬 방향은 서로 일치되는 것을 특징으로 하는 쌍안정 네마틱 액정 장치.
  4. 제1항에 있어서, 하나의 셀벽에는 이중격자 정열이 제공되고, 다른 셀벽에는 단일의 정열 방향이 이중격자의 2개의 허용된 정열 방향 사이에 놓이는 단안정 단일 정열 방향 트리트먼트가 제공되는 것을 특징으로 하는 쌍안정 네마틱 액정 장치.
  5. 제1항에 있어서, 하나 이상의 이중격자는 하나 이상의 비대칭 격자 프로필을 갖는 것을 특징으로 하는 쌍안정 네마틱 액정 장치.
  6. 제1항에 있어서, 하나 이상의 이중격자는 하나 이상의 대칭 격자 프로필을 갖는 것을 특징으로 하는 쌍안정 네마틱 대칭 장치.
  7. 제5항에 있어서, 셀벽상의 비대칭 정열의 방향은 대향 방향으로 서로 대향된 것을 특징으로 하는 쌍안정 네마틱 대칭 장치.
  8. 제5항에 있어서, 셀벽상의 비대칭 정열의 방향은 대향 방향으로 서로 대향된 것을 특징으로 하는 네마틱 대칭 장치.
  9. 제1항에 있어서, 이중격자는 인터페로그래피, 포토리소그래피, 엠보싱, 룰링 또는 캐리어 트랜스퍼에 의해 형성된 층인 것을 특징으로 하는 네마틱 대칭 장치.
  10. 제1항에 있어서, 셀벽은 유리재로 형성된 것을 특징으로 하는 네마틱 대칭 장치.
  11. 제1항에 있어서, 셀벽은 가소성 플라스틱재료 형성된 것을 특징으로 하는 네마틱 대칭 장치.
  12. 제1항에 있어서, 스페이서 필러는 하나 또는 2개의 셀벽상에 형성된 것을 특징으로 하는 네마틱 장치.
  13. 제1항에 있어서, 스페이서 필러는 하나 또는 2개의 셀벽상의 격자를 형성하는 재료로 형성된 것을 특징으로 하는 네마틱 장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019960704456A 1994-02-09 1995-01-30 쌍안정네마틱액정장치 KR100321886B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9402513.7 1994-02-09
GB9402513A GB9402513D0 (en) 1994-02-09 1994-02-09 Bistable nematic liquid crystal device
PCT/GB1995/000179 WO1995022077A1 (en) 1994-02-09 1995-01-30 Bistable nematic liquid crystal devices

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KR970701368A true KR970701368A (ko) 1997-03-17
KR100321886B1 KR100321886B1 (ko) 2002-09-26

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US (1) US5796459A (ko)
EP (1) EP0744041B1 (ko)
JP (1) JPH09508716A (ko)
KR (1) KR100321886B1 (ko)
CN (1) CN1041656C (ko)
CA (1) CA2182962A1 (ko)
DE (1) DE69500922T2 (ko)
ES (1) ES2108568T3 (ko)
GB (3) GB9402513D0 (ko)
MY (1) MY111821A (ko)
SG (1) SG75093A1 (ko)
TW (1) TW417032B (ko)
WO (1) WO1995022077A1 (ko)

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GB2301446A (en) 1996-12-04
GB9502664D0 (en) 1995-03-29
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EP0744041B1 (en) 1997-10-22
CN1145121A (zh) 1997-03-12
GB9402513D0 (en) 1994-03-30
JPH09508716A (ja) 1997-09-02
EP0744041A1 (en) 1996-11-27
ES2108568T3 (es) 1997-12-16
CN1041656C (zh) 1999-01-13
GB9616657D0 (en) 1996-09-25
KR100321886B1 (ko) 2002-09-26
CA2182962A1 (en) 1995-08-17
TW417032B (en) 2001-01-01
US5796459A (en) 1998-08-18
SG75093A1 (en) 2000-09-19
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DE69500922T2 (de) 1998-02-12
DE69500922D1 (de) 1997-11-27

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