KR970707460A - 평면 패널 화상 디스플레이 장치용 조사시스템(lllumination system for a flat-panel picture display device) - Google Patents
평면 패널 화상 디스플레이 장치용 조사시스템(lllumination system for a flat-panel picture display device)Info
- Publication number
- KR970707460A KR970707460A KR1019970702630A KR19970702630A KR970707460A KR 970707460 A KR970707460 A KR 970707460A KR 1019970702630 A KR1019970702630 A KR 1019970702630A KR 19970702630 A KR19970702630 A KR 19970702630A KR 970707460 A KR970707460 A KR 970707460A
- Authority
- KR
- South Korea
- Prior art keywords
- illumination system
- optical waveguide
- reflective polarizer
- light
- diffuser
- Prior art date
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Classifications
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- 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
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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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/14—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for producing polarised light
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
- G02B5/0221—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having an irregular structure
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0273—Diffusing elements; Afocal elements characterized by the use
- G02B5/0284—Diffusing elements; Afocal elements characterized by the use used in reflection
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- 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
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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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/13362—Illuminating devices providing polarized light, e.g. by converting a polarisation component into another one
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- 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
- G02B6/0051—Diffusing sheet or layer
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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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
- G02F1/133536—Reflective polarizers
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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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
- G02F1/133543—Cholesteric polarisers
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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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
- G02F1/13355—Polarising beam splitters [PBS]
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Mathematical Physics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
Abstract
본 장치는 조사시스템(3)과, 이런 조사시스템을 포함하는 평면 패널화상 디스플레이 장치에 관한 것이다.
조사시스템(3)은 출구면(19)과 4개의 단부면(13,14,15,16)을 가지는 광학적으로 투명한 재료로된 광도파관(9)을 포함한다. 광원(11)에서 나온 광은 적어도 한 단부면(13)을 통해 광도파관(9)으로 결합된다. 조사시스템(3)은 추가로 광원에 의해 공급된 광을 편광하기 위한 편광수단을 포함한다. 편광수단은 확산기(23)와 조합해서 반사 편광기(21)로서 사용된다. 반사 편광기(21)는 광도파관(9)과 일체로 되고 출구면(19)에 마주보고 위치된 광도파관(9)의 표면(25)을 이룬다. 확산기(23)는 광도파관(9)으로부터 먼 편광기(21)의 표면상에 존재한다.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 평면 패널 화상 디스플레이 장치의 사시도, 제2도는 빔통로가 도시되어 있는, 본 발명에 따른 조사시스템의 실시예의 사시도, 제3a도는 및 제3d도는 광원의 다른 형상을 지닌 조사시스템의 약간의 실시예를 도시한 사시도.
Claims (16)
- 출구면과 광원이 대향해 놓이는 적어도 한 단부면을 가진 다수의 단부면을 가지고 광학적으로 투명한 재료로된 광도파관과, 상기 광원에 의해 방출된 광을 편광하기 위한 편광수단을 포함하며, 광이 상기 도파관의 단부면에 결합될 수 있는 조사시스템에 있어서, 상기 편광수단은 상기 광도파관의 출구면에 마주보고 위치된 광도파관의 표면상에 존재하는 반사 편광기에 의해 구성되어 있고, 상기 편광기의 표면은 확산기가 제공된 광도파관으로부터 멀리 있는 것을 특징으로 하는 조사시스템.
- 제1항에 있어서, 상기 반사 편광기으로부터 먼 확산기의 측면상에 반사경이 배치되어 있는것을 특징으로 하는 조사시스템.
- 제2항에 있어서, 상기 반사경은 편광 회전 또는 소멸 반사경인 것을 특징으로 하는 조사시스템.
- 제2항 또는 제3항에 있어서, 상기 반사경이 대부분 완전히 반사하는 입지를 포함하는 포일인 것을 특징으로 하는 조사시스템.
- 제1항, 제2항, 제3항, 제4항 있어서, 소멸효과를 가진 반사경이 광원으로부터 먼 적어도 한 단부면 상에 배치되어 있는 것을 특징으로 하는 조사시스템.
- 제1항, 제2항, 제3항, 제4항 또는 제5항에 있어서, 상기 반사편광기가 콜레스테릭 편광기인 것을 특징으로 하는 조사시스템.
- 제6항에 있어서, 상기 콜레스테릭 편광기는 액정 폴리머 재료의 싱글층으로서 사용되고, 상기 층내의 분자 나선형의 피치는 전체 가시 파장 영역을 커버하는데 필요한 반사 밴드의 각 상한값과 하한값에 대응하는 두 값 사이에 연속적으로 변하는 것을 특징으로 하는 조사시스템.
- 제6항 또는 제7항에 있어서, 상기 조사시스템은플레이트를 포함하며, 여기서 n은 기수의 수인 것을 특징으로 하는 조사시스템.
- 제8항에 있어서, 상기플레이트는 광도파관의 출구면상에 존재하는 것을 특징으로 하는 조사시스템.
- 제8항에 있어서, 상기플레이트는 콜레스테릭 층과 광도파관 사이에 존재하는 것을 특징으로 하는 조사시스템.
- 제8항에 있어서, 상기플레이트는 광도파관으로서 기능을 하는 것을 특징으로 하는 조사시스템.
- 제1항에 있어서, 상기 반사 편광기는 복굴절 재료를 포함하는 적층체 층 또는 복굴절과 비복굴절을 번갈아 놓은 적층체 층으로서 사용되는 선형 편광기인 것을 특징으로 하는 조사시스템.
- 제1항 내지 제12항중 어느 한 항에 있어서, 상기 확산기는 반사 편광기의 표면상에 제공된 박막인 것을 특징으로 하는 조사시스템.
- 제1항 내지 제13항중 어느 한 항에 있어서, 상기 확산기는 상기 반사 편광기의 표면내에 제공된 광확산 구조체인 것을 특징으로 하는 조사시스템.
- 제14항에 있어서, 상기 광확산 구조체는 불연속 확산 영역의 패턴에 의해 구성되어 있는 것을 특징으로 하는 조사시스템.
- 디스플레이될 화상정보에 따라 조사시스템에 의해 발생된 광의 편광의 방향을 변조하기 위한 화상 디스플레이 패널이 제공된 조사시스템을 포함하는 평면 패널 화상 디스플레이 장치에 있어서, 상기 조사시스템은 제1항 내지 제15항 중 어느 한 항에서 청구된 바와 같은 것을 특징으로 하는 평면 패널 화상 디스플레이 장치※ 참고사항: 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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EP95202281.2 | 1995-08-23 | ||
EP95202281 | 1995-08-23 |
Publications (2)
Publication Number | Publication Date |
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KR970707460A true KR970707460A (ko) | 1997-12-01 |
KR100427904B1 KR100427904B1 (ko) | 2004-09-08 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1019970702630A KR100427904B1 (ko) | 1995-08-23 | 1996-08-16 | 평면패널화상디스플레이장치용조명시스템 |
Country Status (6)
Country | Link |
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US (1) | US5856855A (ko) |
EP (1) | EP0789857B1 (ko) |
JP (1) | JP3821849B2 (ko) |
KR (1) | KR100427904B1 (ko) |
DE (1) | DE69632813T2 (ko) |
WO (1) | WO1997008583A1 (ko) |
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KR100714518B1 (ko) * | 1999-05-17 | 2007-05-07 | 닛토덴코 가부시키가이샤 | 액정 디스플레이 장치 |
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GB2340280A (en) * | 1998-08-03 | 2000-02-16 | Lite On Electronics Inc | Grating structure for lightguide of a display backlight |
KR100371936B1 (ko) * | 1998-09-25 | 2003-02-14 | 시티즌 도케이 가부시키가이샤 | 액정표시장치 |
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JP2001042125A (ja) * | 1999-08-04 | 2001-02-16 | Nitto Denko Corp | 偏光部材、光学部材及び液晶表示装置 |
JP2001051268A (ja) * | 1999-08-17 | 2001-02-23 | Nitto Denko Corp | 液晶表示装置 |
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- 1996-08-16 KR KR1019970702630A patent/KR100427904B1/ko not_active IP Right Cessation
- 1996-08-16 WO PCT/IB1996/000812 patent/WO1997008583A1/en active IP Right Grant
- 1996-08-16 DE DE69632813T patent/DE69632813T2/de not_active Expired - Fee Related
- 1996-08-16 EP EP96925943A patent/EP0789857B1/en not_active Expired - Lifetime
- 1996-08-16 JP JP51002397A patent/JP3821849B2/ja not_active Expired - Fee Related
- 1996-08-23 US US08/702,302 patent/US5856855A/en not_active Expired - Lifetime
Cited By (2)
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KR100714518B1 (ko) * | 1999-05-17 | 2007-05-07 | 닛토덴코 가부시키가이샤 | 액정 디스플레이 장치 |
KR100661365B1 (ko) * | 2005-04-27 | 2006-12-27 | 삼성전자주식회사 | 액정표시장치 |
Also Published As
Publication number | Publication date |
---|---|
JP3821849B2 (ja) | 2006-09-13 |
US5856855A (en) | 1999-01-05 |
EP0789857B1 (en) | 2004-06-30 |
KR100427904B1 (ko) | 2004-09-08 |
DE69632813T2 (de) | 2005-06-30 |
WO1997008583A1 (en) | 1997-03-06 |
EP0789857A1 (en) | 1997-08-20 |
DE69632813D1 (de) | 2004-08-05 |
JPH10508152A (ja) | 1998-08-04 |
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