WO2010137919A3 - 백라이트 유닛용 콜레스테릭 반사판, 이를 갖는 백라이트 유닛 및 액정 디스플레이 - Google Patents

백라이트 유닛용 콜레스테릭 반사판, 이를 갖는 백라이트 유닛 및 액정 디스플레이 Download PDF

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Publication number
WO2010137919A3
WO2010137919A3 PCT/KR2010/003426 KR2010003426W WO2010137919A3 WO 2010137919 A3 WO2010137919 A3 WO 2010137919A3 KR 2010003426 W KR2010003426 W KR 2010003426W WO 2010137919 A3 WO2010137919 A3 WO 2010137919A3
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WO
WIPO (PCT)
Prior art keywords
liquid crystal
crystal layer
backlight unit
cholesteric liquid
reflector
Prior art date
Application number
PCT/KR2010/003426
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English (en)
French (fr)
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WO2010137919A2 (ko
Inventor
조기호
심용식
Original Assignee
주식회사 엘엠에스
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 주식회사 엘엠에스 filed Critical 주식회사 엘엠에스
Publication of WO2010137919A2 publication Critical patent/WO2010137919A2/ko
Publication of WO2010137919A3 publication Critical patent/WO2010137919A3/ko

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Classifications

    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133605—Direct backlight including specially adapted reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0056—Means for improving the coupling-out of light from the light guide for producing polarisation effects, e.g. by a surface with polarizing properties or by an additional polarizing elements
    • 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
    • G02F1/137—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

Landscapes

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

Abstract

본 발명은 백라이트 유닛용 콜레스테릭 반사판 등에 관한 것이다. 이러한 백라이트 유닛용 콜레스테릭 반사판, 도광판에서 방출된 광을 반사시키도록 백라이트 유닛에 구비된 반사판에 있어서, 상기 도광판에서 방출된 광이 수직 입사 및 랜덤 방향에서 소정의 경사각으로 입사되는 제1편광을 반사시키면서 제2편광은 투과시키는 제1콜레스테릭 액정층과, 상기 제1콜레스테릭 액정층을 투과한 제2편광을 반사시키는 제2콜레스테릭 액정층을 적층하되, 상기 제1콜레스테릭 액정층과 제2콜레스테릭 액정층의 파장대역은, 제1편광 및 제2편광을 모두 커버하여 실질적인 전반사를 유도하도록, 반사시키고자하는 임의 영역과 상기 임의 영역의 장파장으로부터 확장된 제1범위를 포함하는 것이다. 따라서, 본 발명은 반사판의 입사면을 향해 수직 방향 및 랜덤 방향에서 입사되는 모든 광의 전반사를 유도하여 반사효율을 제고시킬 수 있는 장점이 있다.
PCT/KR2010/003426 2009-05-29 2010-05-28 백라이트 유닛용 콜레스테릭 반사판, 이를 갖는 백라이트 유닛 및 액정 디스플레이 WO2010137919A2 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2009-0047217 2009-05-29
KR1020090047217A KR100962109B1 (ko) 2009-05-29 2009-05-29 백라이트 유닛용 콜레스테릭 반사판, 이를 갖는 백라이트 유닛 및 액정 디스플레이

Publications (2)

Publication Number Publication Date
WO2010137919A2 WO2010137919A2 (ko) 2010-12-02
WO2010137919A3 true WO2010137919A3 (ko) 2011-03-03

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KR (1) KR100962109B1 (ko)
WO (1) WO2010137919A2 (ko)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120028427A (ko) 2010-09-14 2012-03-23 삼성전자주식회사 표시 장치
KR101797214B1 (ko) 2011-08-18 2017-11-14 삼성디스플레이 주식회사 투명 표시 장치 및 그것의 구동 방법

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990065280A (ko) * 1998-01-10 1999-08-05 권문구 적층방법을 이용한 광대역 특성을 갖는 편광막의 제조방법
KR20010099724A (ko) * 2000-04-24 2001-11-09 니시무로 타이죠 액정표시소자 및 그 제조방법
KR20030064638A (ko) * 2002-01-28 2003-08-02 세이코 엡슨 가부시키가이샤 반사판, 반사판의 제조 방법, 액정 장치, 전자기기
KR20060065457A (ko) * 2004-12-09 2006-06-14 옵티맥스 테크놀러지 코포레이션 콜레스테릭 액정 제어막
KR20060097433A (ko) * 2005-03-09 2006-09-14 삼성정밀화학 주식회사 광대역 반사형 고휘도 편광판 및 이를 구비하는 액정표시장치

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100763404B1 (ko) 2006-05-10 2007-10-04 삼성코닝 주식회사 백 라이트 유닛

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19990065280A (ko) * 1998-01-10 1999-08-05 권문구 적층방법을 이용한 광대역 특성을 갖는 편광막의 제조방법
KR20010099724A (ko) * 2000-04-24 2001-11-09 니시무로 타이죠 액정표시소자 및 그 제조방법
KR20030064638A (ko) * 2002-01-28 2003-08-02 세이코 엡슨 가부시키가이샤 반사판, 반사판의 제조 방법, 액정 장치, 전자기기
KR20060065457A (ko) * 2004-12-09 2006-06-14 옵티맥스 테크놀러지 코포레이션 콜레스테릭 액정 제어막
KR20060097433A (ko) * 2005-03-09 2006-09-14 삼성정밀화학 주식회사 광대역 반사형 고휘도 편광판 및 이를 구비하는 액정표시장치

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KR100962109B1 (ko) 2010-06-10
WO2010137919A2 (ko) 2010-12-02

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