KR980003690A - 반사광 밸브용 자기 보상형 트위스트 네마틱 모드 - Google Patents

반사광 밸브용 자기 보상형 트위스트 네마틱 모드 Download PDF

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KR980003690A
KR980003690A KR1019970015967A KR19970015967A KR980003690A KR 980003690 A KR980003690 A KR 980003690A KR 1019970015967 A KR1019970015967 A KR 1019970015967A KR 19970015967 A KR19970015967 A KR 19970015967A KR 980003690 A KR980003690 A KR 980003690A
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liquid crystal
crystal cell
twist angle
less
voltage
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KR1019970015967A
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KR100302693B1 (ko
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가이 셩 양
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제프리 엘. 포맨
인터내셔널 비지네스 머신즈 코포레이션
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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
    • 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
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • 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
    • G02F1/133531—Polarisers characterised by the arrangement of polariser or analyser axes
    • 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
    • G02F1/1398—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 below 90°
    • 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

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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)
  • Liquid Crystal (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mathematical Physics (AREA)
  • Liquid Crystal Substances (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

본 발명은 거의 100%의 높은 광학 효율을 갖는 반사광 밸브용 자기 보상형 트위스트 네마틱 (SCTN)에 관한것이며, 이것은 종래 기술의 것과 비교하여 약 3V 미만의 포화 전압 및 셀-갭 불균일성 면에서 비교적 큰 허용 오차를 갖는다. 본 발명의 SCTN 모드는 Si-웨이퍼 상에 제조된 액티브 매트릭스에 의해 구동되는 반사광 밸브용으로 특히 적합하다.

Description

반사광 밸브용 자기 보상형 트위스트 네마틱 모드
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1a도는 선형적으로 편광된 입사광을 필요로 하는 반사광 밸브용의 네마틱 액정 셀을 사용하는 동작 원리를 도시한 도면이다.
제1b도는 본 발명의 자기 보상형 트위스트 네마틱 모드를 개략적으로 도시한 도면.

Claims (8)

  1. 총 트위스트 각도가 50° 내지 75°이고 dn/λ가 0.4 내지 0.8인 트위스트 네마틱 액정 셀(twisted nematic liquid crystal cell)과, 상기 총 트위스트 각도를 대략적으로 이등분하거나 상기 총 트위스트 각도의 이등분에 대략적으로 직교하는 편광 방향을 갖는 입사 빔을 제공하기 위한 수단을 포함하는 구조물.
  2. 제1항에 있어서, 상기 트위스트 네마틱 액정 셀은 하나 이상의 투명 전극 및 하나 이하의 반사형 전극을 갖는 구조물.
  3. 제1항에 있어서, 상기 트위스트 네마틱 액정 셀은 대향적으로 배치된 기판들 사이에 배치되며 양의 유전이방성 (positive dielectric anisotropy)을 가지며 상기 대향적으로 배치된 기판들로부터 약 25°미만의 프리틸트각도를 갖는 경사진 균일(homogeneous) 정렬을 갖는 액정 혼합물을 사용하는 구조물.
  4. 제3항에 있어서, 상기 액정 혼합물은 상기 액정 셀에 대해 약 80°미만의 트위스트 각도를 유도하도록 키랄 약품(chiral agent)을 포함하는 구조물.
  5. 제1항에 있어서, 상기 네마틱 액정 셀에 전압을 인가하기 위한 수단을 더 포함하는 구조물
  6. 제2항에 있어서, 반사형 전극은 금속 전극인 구조물.
  7. 제1항에 있어서, 상기 네마틱 액정 셀은 대향적으로 배치된 기판들 사이에 배치되며 음의 유전 이방성을 가지며 상기 기판들로부터 약 75°미만의 프리틸트 각도를 갖는 경사진 유사(homeoropic) 정렬을 갖는 액정혼합물을 포함하는 구조물.
  8. 제5항에 있어서, 상기 액정 혼합물은 상기 전압이 임계 전압 이상이면 상기 액정 셀에 대해 약 80미만의 트위스트 각도를 유도하며 상기 전압이 상기 임계 전압 미만이면 거의 0(zero)의 트위스트 각도를 유도하도록 저 농도의 키랄 약품을 포함하는 구조물.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019970015967A 1996-06-07 1997-04-28 반사광밸브용자기보상형트위스트네마틱액정셀을사용한표시장치 KR100302693B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/659,813 US5936697A (en) 1996-06-07 1996-06-07 Self-compensated twisted nematic mode for reflective light valves
US08/659,813 1996-06-07

Publications (2)

Publication Number Publication Date
KR980003690A true KR980003690A (ko) 1998-03-30
KR100302693B1 KR100302693B1 (ko) 2001-11-22

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Country Status (5)

Country Link
US (1) US5936697A (ko)
EP (1) EP0811870A3 (ko)
JP (1) JPH1090731A (ko)
KR (1) KR100302693B1 (ko)
CN (1) CN1153086C (ko)

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US6285478B1 (en) 1998-03-26 2001-09-04 Chorum Technologies Lp Programmable optical add/drop device
US6166838A (en) 1997-03-24 2000-12-26 Chorum Technologies, Inc. Optical add/drop wavelength switch
US6791640B1 (en) 1997-04-23 2004-09-14 Sharp Kabushiki Kaisha Reflection liquid crystal display and reflection liquid crystal display provided with built-in touch panel and comprising the same
US6094246A (en) 1998-01-06 2000-07-25 Chorum Technologies Acute twist nematic liquid crystal electro-optic modulator for use in an infrared optical communication system having extinction ratio of -25db
GB2335755A (en) 1998-03-26 1999-09-29 Sharp Kk Liquid crystal device
US6134358A (en) 1998-08-27 2000-10-17 Chorum Technologies Inc. N x N switch array with reduced components
KR100283878B1 (ko) * 1999-01-20 2001-02-15 윤종용 콘트라스트비를 높히기 위한 반사형 디스플레이장치
US6798475B2 (en) * 1999-03-02 2004-09-28 International Business Machines Corporation Reflective light valve
US6396609B1 (en) 1999-12-20 2002-05-28 Chorum Technologies, Lp Dispersion compensation for optical systems
US6559992B2 (en) 2000-03-27 2003-05-06 Chorum Technologies Lp Adjustable chromatic dispersion compensation
JP2002207213A (ja) 2001-01-11 2002-07-26 Hitachi Ltd 液晶表示素子又はそれを用いた表示装置
US20030095220A1 (en) * 2001-11-21 2003-05-22 Hemasiri Vithana Method and apparatus for a reflective liquid crystal display system using a rotational offset angle to improve photopic contrast
DE10335649A1 (de) * 2003-07-30 2005-02-24 Jotec Gmbh Flechtstent zur Implantation in ein Blutgefäß
TWI300501B (en) * 2004-04-27 2008-09-01 Toppoly Optoelectronics Corp Reflective light valve structure
CN100353250C (zh) * 2004-05-13 2007-12-05 统宝光电股份有限公司 反射式液晶光阀结构
US7327420B2 (en) * 2004-11-12 2008-02-05 Research Foundation Of The University Of Central Florida, Incorporated Reflective liquid crystal projection displays with low voltage and high contrast using improved bisector effect
WO2008019227A2 (en) * 2006-08-03 2008-02-14 Cuspate, Llc Self-compensating, quasi-homeotropic liquid crystal device

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US4378955A (en) * 1979-08-03 1983-04-05 Hughes Aircraft Company Method of and apparatus for a multimode image display with a liquid crystal light valve
ATE83081T1 (de) * 1986-10-24 1992-12-15 Hoffmann La Roche Fluessigkristallanzeigezelle.
DE69221968T2 (de) * 1991-06-28 1998-03-05 Philips Electronics Nv Bildwiedergabeanordnung

Also Published As

Publication number Publication date
US5936697A (en) 1999-08-10
JPH1090731A (ja) 1998-04-10
EP0811870A3 (en) 1998-07-15
CN1153086C (zh) 2004-06-09
CN1181516A (zh) 1998-05-13
KR100302693B1 (ko) 2001-11-22
EP0811870A2 (en) 1997-12-10

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