WO2010147355A3 - Plaque réfléchissante pour unité de rétroéclairage, unité de rétroéclairage la comprenant et dispositif d'affichage à cristaux liquides - Google Patents

Plaque réfléchissante pour unité de rétroéclairage, unité de rétroéclairage la comprenant et dispositif d'affichage à cristaux liquides Download PDF

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Publication number
WO2010147355A3
WO2010147355A3 PCT/KR2010/003826 KR2010003826W WO2010147355A3 WO 2010147355 A3 WO2010147355 A3 WO 2010147355A3 KR 2010003826 W KR2010003826 W KR 2010003826W WO 2010147355 A3 WO2010147355 A3 WO 2010147355A3
Authority
WO
WIPO (PCT)
Prior art keywords
backlight unit
liquid crystal
cholesteric liquid
reflective
specific area
Prior art date
Application number
PCT/KR2010/003826
Other languages
English (en)
Korean (ko)
Other versions
WO2010147355A2 (fr
Inventor
조기호
심용식
장혜진
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.)
Filing date
Publication date
Application filed by 주식회사 엘엠에스 filed Critical 주식회사 엘엠에스
Publication of WO2010147355A2 publication Critical patent/WO2010147355A2/fr
Publication of WO2010147355A3 publication Critical patent/WO2010147355A3/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/416—Reflective
    • 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
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/34—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 reflector
    • G02F2201/343—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 reflector cholesteric liquid crystal reflector

Abstract

La présente invention porte sur une plaque réfléchissante pour unité de rétroéclairage. La plaque réfléchissante pour unité de rétroéclairage est agencée dans l'unité de rétroéclairage de façon à réfléchir une lumière incidente, et comprend : une couche réfléchissante destinée à réfléchir une lumière polarisée aléatoire incidente, une première couche de cristaux liquides chlolestériques formée d'un côté de la couche réfléchissante de façon à réfléchir une première lumière polarisée dans une zone spécifique et transmettre une seconde lumière polarisée dans la zone spécifique à l'aide de celle-ci, et une seconde couche de cristaux liquides cholestérique agencée de façon à réfléchir dans la zone spécifique la seconde lumière polarisée, transmise à travers la première couche de cristaux liquides cholestériques, la première couche de cristaux liquides cholestérique et la seconde couche de cristaux liquides cholestérique ayant des bandes de longueur d'onde réfléchissantes aptes à réfléchir la lumière dans une zone spécifique à faible réflectivité, parmi une zone de réflexion arbitraire devant être réfléchie par la couche réfléchissante. Il en résulte que la présente invention améliore la réflectivité de la zone spécifique à faible réflectivité, parmi la zone de lumière visible, de façon à réfléchir une lumière incidente par une plaque réfléchissante, compensant ainsi une différence de couleur.
PCT/KR2010/003826 2009-06-17 2010-06-15 Plaque réfléchissante pour unité de rétroéclairage, unité de rétroéclairage la comprenant et dispositif d'affichage à cristaux liquides WO2010147355A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2009-0053807 2009-06-17
KR1020090053807A KR100940790B1 (ko) 2009-06-17 2009-06-17 백라이트 유닛용 반사판, 이를 갖는 백라이트 유닛 및 액정 디스플레이

Publications (2)

Publication Number Publication Date
WO2010147355A2 WO2010147355A2 (fr) 2010-12-23
WO2010147355A3 true WO2010147355A3 (fr) 2011-04-14

Family

ID=42083082

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2010/003826 WO2010147355A2 (fr) 2009-06-17 2010-06-15 Plaque réfléchissante pour unité de rétroéclairage, unité de rétroéclairage la comprenant et dispositif d'affichage à cristaux liquides

Country Status (2)

Country Link
KR (1) KR100940790B1 (fr)
WO (1) WO2010147355A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102066081B1 (ko) * 2013-01-14 2020-01-14 엘지디스플레이 주식회사 백 라이트 유닛 및 이를 이용한 액정 표시장치
CN105068177A (zh) * 2015-09-18 2015-11-18 京东方科技集团股份有限公司 一种光学组件、显示装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003294948A (ja) * 2002-04-08 2003-10-15 Nitto Denko Corp 帯域フィルタ及びこれを用いた面光源装置
JP2004029695A (ja) * 2002-04-30 2004-01-29 Casio Comput Co Ltd 表示装置
JP2005292423A (ja) * 2004-03-31 2005-10-20 Dainippon Printing Co Ltd 偏光選択反射シート並びにそれを備えた投影スクリーン及び投影システム

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100682356B1 (ko) * 2000-06-14 2007-02-15 엘지.필립스 엘시디 주식회사 투과 반사형 액정표시장치
JP4008358B2 (ja) * 2003-01-10 2007-11-14 日東電工株式会社 広帯域コレステリック液晶フィルムの製造方法
KR100722212B1 (ko) * 2004-12-09 2007-05-29 옵티맥스 테크놀러지 코포레이션 콜레스테릭 액정 제어막

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003294948A (ja) * 2002-04-08 2003-10-15 Nitto Denko Corp 帯域フィルタ及びこれを用いた面光源装置
JP2004029695A (ja) * 2002-04-30 2004-01-29 Casio Comput Co Ltd 表示装置
JP2005292423A (ja) * 2004-03-31 2005-10-20 Dainippon Printing Co Ltd 偏光選択反射シート並びにそれを備えた投影スクリーン及び投影システム

Also Published As

Publication number Publication date
WO2010147355A2 (fr) 2010-12-23
KR100940790B1 (ko) 2010-02-10

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