KR900013335A - 액정표시장치 - Google Patents

액정표시장치 Download PDF

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KR900013335A
KR900013335A KR1019900001429A KR900001429A KR900013335A KR 900013335 A KR900013335 A KR 900013335A KR 1019900001429 A KR1019900001429 A KR 1019900001429A KR 900001429 A KR900001429 A KR 900001429A KR 900013335 A KR900013335 A KR 900013335A
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South Korea
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retardation plate
liquid crystal
retardation
value
display device
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KR1019900001429A
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KR940006984B1 (ko
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히로시 오오니시
도시유끼 요시미즈
마사가즈 와다
히로시 구와가끼
도시미찌 가쓰베
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쓰지 하루오
샤프 가부시끼가이샤
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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 
    • G02F1/17—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 variable-absorption elements not provided for in groups G02F1/015 - G02F1/169
    • 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
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • G02F1/133637—Birefringent elements, e.g. for optical compensation characterised by the wavelength dispersion
    • 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
    • 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
    • G02F2413/02—Number of plates being 2
    • 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
    • G02F2413/08—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 with a particular optical axis orientation

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

Abstract

내용 없음

Description

액정표시장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
본 발명의 목적과 특색과 이점과는 아래의 상세한 설명과 도면에서 한층 명확하게 될 것이다.
제1도는 본 발명의 한 실시예의 설명에 제공하는 액정표시장치의 구조설명도,
제2도는 동실예의 위치관계를 표시하는 평면도,
제3도는 실시예 I 의 OFF 상태의 제1의 위상차판(位相差板)을 통과한 출사편광상태를 표시하는 도면,
제4도는 실시예 I의 ON 상태의 제1의 위상차판을 통과한 출사편광상태를 표시하는 도면,
제5도는 실시예2의 OFF상태의 제1의 위상차판을 통과한 출사편광상태를 표시하는 도면,
제11도는 STN 액정패널이 레터데이션치(d·△n)와 사용하는 위상차의 레터데이션치(Re 2)와의 관계를 표시한 도면,
제12도는 STN 액정패널과 위상차판의 분광 투과율이 관계를 표시한 도면,
제13도는 제1, 제2의 위상차판의 광학축이 이루는 각도(Θ)와 제1, 제2의 위상차판에서 되는 실효의 레터데이션치와의 관계를 표시한 도면,
제14도는 종래 장치의 분광복성을 표시하는 도면,
제15도는 위상차판의 광학축의 관계를 표시하는 도면,
제16도는 위상차판의 파장분산을 표시하는 도면,
제17도는 STN 액정패널의 광학축의 관계를 표시하는 도면,
제18도는 STN 액정패널의 파장분산을 표시하는 도면.

Claims (7)

  1. 슈퍼 트위스트형 액정표시장치에 있어서, 상측편광판(1)―제1의 위상차판(2)―STN 액정패널(3)―제2의 위상차판(4)―하측편광판(5)을 이 순서로 적층배설하고 상기 제1의 위상차판(2)과 제2의 위상차판(4)의 레터데이션치를 동등하게 하고 아울러 상기 제1의 위상차판(2)과 제2의 위상차판(4)을 STN 액정패널(3)에 대하여 대칭적인 관계, 즉, Θ1＋Θ2＝180°, 여기에서 Θ1은 STN 액정패널을 구성하는 상기판의 액정분자 배향축과 제1의 위상차판 광학축이 이루는 각이며, Θ2는 동하기판의 액정분자 배향축과 제2의 위상차판 광학축의 이루는 각도에 배설한 것을 특징으로 하는 액정표시장치.
  2. 제1항에 있어서, 상기 제1의 위상차판(2)과 제2의 위상차판(4)의 레터데이션치는 330∼500㎚인 것을 특징으로 하는 액정표시장치.
  3. 제1항에 있어서, 상기 제1의 위상차판(2)과 제2의 위상차판(4)의 레터데이션치는 330∼420㎚인 것을 특징으로 하는 액정표시장치.
  4. 제1항에 있어서, 상기 Θ1및 Θ2가 다함께 45°보다 큰 것을 특징으로 하는 액정표시장치.
  5. 제1항에 있어서,상기 Θ1및 Θ2가 다함께 90°인 것을 특징으로 하는 액정표시장치.
  6. 제1항에 있어서, 상기 제1의 위상차판(2)과 제2의 위상차판(4)은 1매 또는 복수매의 일축성 고분자필름으로 부터 구성되어 있는 것을 특징으로 하는 액정표시장치.
  7. 제1항에 있어서 트위스트각 및 레터데이션치가 기히 알려진 STN 액정패널(3)을 상요하는 액정표시장치에 있어서, 제1의 위상차판(2) 및 제2의 위상차판(4)의 레터데이션치를 각각 Re1으로 하고, 제1의 위상차판(2) 및 제2의 위상차판(4)에 의한 실효의 레터데이션치를 Re2로 하고 제1의 위상차판(2)과 제2의 위상차판(4)의 광학축의 이루는 각도를 Θ라 할때, Re(panel)와 Re1의 상관관계를 표시하는 그래프로 부터 Re1의 개략치를 선택하고, nRe2＝Re(panel)×3/2(n＝1 or 2)로부터 Re2의 개략치를 산출하고, 다시금 Re2＝2Rel cosΘ로부터 Θ의 개략치를 산출하고, 제1의 위상차판(2) 및 제2의 위상차판(4)을 배설한 것을 특징으로 하는 액정표시장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019900001429A 1989-02-06 1990-02-06 액정표시장치 KR940006984B1 (ko)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP1-28387 1989-02-06
JP2838789 1989-02-06
JP1-72150 1989-03-24
JP7215089 1989-03-24
JP1-110090 1989-04-29
JP11009089 1989-04-29
JP1-262624 1989-10-06
JP1262624A JP2667716B2 (ja) 1989-02-06 1989-10-06 液晶表示装置

Publications (2)

Publication Number Publication Date
KR900013335A true KR900013335A (ko) 1990-09-05
KR940006984B1 KR940006984B1 (ko) 1994-08-03

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KR1019900001429A KR940006984B1 (ko) 1989-02-06 1990-02-06 액정표시장치

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JP (1) JP2667716B2 (ko)
KR (1) KR940006984B1 (ko)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04138424A (ja) * 1990-09-28 1992-05-12 Sharp Corp 液晶表示装置
JPH04194820A (ja) * 1990-11-22 1992-07-14 Sharp Corp 液晶表示装置
JPH0566384A (ja) * 1991-09-10 1993-03-19 Sharp Corp 液晶表示装置

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Publication number Publication date
JPH0373921A (ja) 1991-03-28
KR940006984B1 (ko) 1994-08-03
JP2667716B2 (ja) 1997-10-27

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