KR950019858A - 액정 후막셀을 사용한 광변조기 - Google Patents

액정 후막셀을 사용한 광변조기 Download PDF

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Publication number
KR950019858A
KR950019858A KR1019940037423A KR19940037423A KR950019858A KR 950019858 A KR950019858 A KR 950019858A KR 1019940037423 A KR1019940037423 A KR 1019940037423A KR 19940037423 A KR19940037423 A KR 19940037423A KR 950019858 A KR950019858 A KR 950019858A
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KR
South Korea
Prior art keywords
liquid crystal
thick film
film cell
optical modulator
electrode plates
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KR1019940037423A
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English (en)
Inventor
준야 고바야시
준이찌 기따
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후지와라 기꾸오
가부시끼가이샤 시마즈세이사꾸쇼
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Publication of KR950019858A publication Critical patent/KR950019858A/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
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3696—Generation of voltages supplied to electrode drivers
    • 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
    • G02F1/135—Liquid crystal cells structurally associated with a photoconducting or a ferro-electric layer, the properties of which can be optically or electrically varied
    • 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
    • G02F1/141—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 using ferroelectric liquid crystals
    • 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
    • G02F1/13756—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 the liquid crystal selectively assuming a light-scattering state

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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)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal (AREA)

Abstract

강유전성 액정을 사용한 후막셀 광변조기에 있어서, 비대칭 듀티비 즉 55-85%의 듀티비를 가진 일련의 전압펄스가 강유전성 액정을 포함하는 한쌍의 전극판 사이에 적용된다. 강유전성 액정을 사용한 다른 액정 후막셀 광변조기에 있어서, DC바이어스 전압이 전압펄스에 가해지고, 여기서 DC바이서스 전압의 크기는 전압펄스 반진폭의 20-50%이다. 또 다른 액정 후막셀 광변조기에 있어서, 전극판 사이의 잔극길이가 50㎛이상이고, 강유전성 액정의 스멕틱 C상내의 헬리컬 피치는 간극길이의 0.7-0.95배이다.

Description

액정 후막셀을 사용한 광변조기
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 따른 강유전성 액정 후막셀의 종단면도이다,
제8도는 액정 후막셀의 종단면도이다,
제10도는 다른 액정 후막셀의 종단면도이다.

Claims (8)

  1. 한쌍의 병렬전극판 사이에 강유전성 액정을 포함하는 후막셀; 및 전극판 쌍 사이에 비대칭 듀티비를 가진 일련의 전압펄스를 적용하기 위한 전압적용회로를 포함하여 구성되는 것을 특징으로 하는 액정 후막셀 광변조기.
  2. 제1항에 있어서, 듀티비가 55-85%인 것을 특징으로 하는 액정 후막셀 광변조기.
  3. 제1항에 있어서, 듀티비가 58-75%인 것을 특징으로 하는 액정 후막셀 광변조기.
  4. 한쌍의 병렬전극판 사이에 강유전성 액정을 포함하는 후막셀; 및 전극판 쌍 사이에서 전압펄스에 가해스 DC바이어스 전압을 가진 일련의 전압펄스를 적용하기 위한 전압적용회로를 포함하여 구성되는 것을 특징으로 하는 액정 후막셀 광변조기.
  5. 제4항에 있어서, DC바이어스는 전압펄스의 반진폭의 20-50%인 것을 특징으로 하는 액정 후막셀 광변조기.
  6. 제4항에 있어서, DC바이어스는 전압펄스의 반진폭의 25-45%인 것을 특징으로 하는 액정 후막셀 광변조기.
  7. 50㎛이상의 전극판 사이에 간극길이를 가진 한쌍의 병렬 전극판을 가지는 두꺼운셀; 간극길이 0.7-0.95배인 스멕틱 C상내의 강유전성 액정의 헬리컬 피치를 가진 전극판 쌍 사이에 수용된 강유전성액정 및; 전극판 사이에 일련의 전압펄스를 적용하기 위한 전압적용회로를 포함하여 구성되는 것을 특징으로 하는 액정 후막셀 광변조기.
  8. 제7항에 있어서, 스멕틱 C상내 강유전성 액정의 헬리컬 피치가 간극길이의 0.8-0.9배인 것을 특징으로 하는 액정 후막셀 광변조기.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019940037423A 1993-12-28 1994-12-27 액정 후막셀을 사용한 광변조기 KR950019858A (ko)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP33823793 1993-12-28
JP93-338237 1993-12-28
JP94-81973 1994-04-20
JP8197394 1994-04-20
JP94-202455 1994-08-26
JP20245594 1994-08-26

Publications (1)

Publication Number Publication Date
KR950019858A true KR950019858A (ko) 1995-07-24

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ID=27303757

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Application Number Title Priority Date Filing Date
KR1019940037423A KR950019858A (ko) 1993-12-28 1994-12-27 액정 후막셀을 사용한 광변조기

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Country Link
US (1) US5670978A (ko)
EP (1) EP0661583B1 (ko)
KR (1) KR950019858A (ko)
CN (1) CN1056696C (ko)
DE (1) DE69430566T2 (ko)
SG (1) SG47357A1 (ko)
TW (1) TW366433B (ko)

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Publication number Priority date Publication date Assignee Title
IT1286331B1 (it) * 1996-09-27 1998-07-08 Univ Roma Metodo di comando con tensioni ridotte di un pannello matriciale a cristallo liquido ferrroelettrico
IL121793A (en) 1997-09-17 2008-06-05 Lewis Coleman Isotopic gas analyzer
EP1373872A4 (en) * 2001-02-26 2009-04-22 Yeda Res & Dev CHEMICAL ANALYSIS METHOD AND DEVICE
US6615965B2 (en) 2001-05-18 2003-09-09 Epx, L.P. Planar over-running clutch and method
AU2002356457A1 (en) * 2002-11-25 2004-06-18 Spdi A light valve for cut-off and controllability of light transmittance and a manufacturing method thereof
EP2156241A1 (de) * 2007-06-08 2010-02-24 Werthmüller, René Aufhellende lichtschutzvorrichtung
CN104122908B (zh) * 2013-04-24 2017-02-08 京东方科技集团股份有限公司 一种控温装置和方法
CN113867063B (zh) * 2021-10-28 2022-12-16 华南理工大学 一种铁电螺旋液晶材料及其实现二次谐波增强的方法

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JPH0629919B2 (ja) * 1982-04-16 1994-04-20 株式会社日立製作所 液晶素子の駆動方法
JPS6090290A (ja) * 1983-10-05 1985-05-21 Chisso Corp カイラルスメクチツク液晶組成物
JPS60195521A (ja) * 1984-03-17 1985-10-04 Katsumi Yoshino 強誘電性液晶を用いる高速光スイツチ素子
JPS60254120A (ja) * 1984-05-31 1985-12-14 Katsumi Yoshino 強誘電性液晶を透明状態に保持する方法
JPS61260227A (ja) * 1985-05-15 1986-11-18 Katsumi Yoshino 強誘電性液晶を用いた赤外光制御方法
JPH07113112B2 (ja) * 1985-06-18 1995-12-06 チッソ株式会社 強誘電性カイラルスメクチツク液晶組成物
DE3630012A1 (de) * 1985-09-04 1987-04-23 Canon Kk Ferroelektrische fluessigkristallvorrichtung
GB8608114D0 (en) * 1986-04-03 1986-05-08 Secr Defence Smectic liquid crystal devices
US4773738A (en) * 1986-08-27 1988-09-27 Canon Kabushiki Kaisha Optical modulation device using ferroelectric liquid crystal and AC and DC driving voltages
JPH01302226A (ja) * 1988-05-30 1989-12-06 Alps Electric Co Ltd 強誘電液晶素子
US5327273A (en) * 1989-06-29 1994-07-05 Hoffmann-La Roche Inc. Bistable ferroelectric liquid crystal display cell
EP0479291B1 (en) * 1990-10-05 1994-12-28 Kabushiki Kaisha Toshiba Method and apparatus for driving liquid crystal display device

Also Published As

Publication number Publication date
DE69430566T2 (de) 2002-08-29
EP0661583A2 (en) 1995-07-05
EP0661583B1 (en) 2002-05-08
TW366433B (en) 1999-08-11
SG47357A1 (en) 1998-04-17
EP0661583A3 (en) 1996-07-24
US5670978A (en) 1997-09-23
CN1056696C (zh) 2000-09-20
CN1116723A (zh) 1996-02-14
DE69430566D1 (de) 2002-06-13

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