KR100499133B1 - 백라이트 유닛 - Google Patents
백라이트 유닛 Download PDFInfo
- Publication number
- KR100499133B1 KR100499133B1 KR10-2002-0067969A KR20020067969A KR100499133B1 KR 100499133 B1 KR100499133 B1 KR 100499133B1 KR 20020067969 A KR20020067969 A KR 20020067969A KR 100499133 B1 KR100499133 B1 KR 100499133B1
- Authority
- KR
- South Korea
- Prior art keywords
- light
- guide plate
- light guide
- prism
- angle
- Prior art date
Links
Classifications
-
- 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
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0016—Grooves, prisms, gratings, scattering particles or rough surfaces
-
- 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
- G02F1/133—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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- 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
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
- G02B6/0028—Light guide, e.g. taper
-
- 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
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
Description
Claims (20)
- 도광판;상기 도광판의 가장자리로 광을 투사하는 적어도 하나의 점광원;상기 점광원과 상기 도광판과의 사이에 설치되어 상기 점광원으로부터 방출된 광을 광축 쪽으로 굴절시키는 것으로서, 꼭지가 도광판 쪽을 향하는 V자 형상의 프리즘패턴이 반복 배열된 프리즘 어레이;를 포함하며,상기 광축 부근의 광이 반사에 의하여 손실되는 것을 방지하기 위하여, 상기 프리즘 어레이의 상기 점광원의 광축으로부터 소정 영역 내에는 상기 프리즘 패턴이 생략된 투광부가 형성된 것을 특징으로 하는 백라이트 유닛.
- 삭제
- 제1항에 있어서,상기 점광원과 상기 도광판과의 사이에 설치되는 투광체;를 더 구비하며,상기 프리즘 어레이는 프리즘 쉬트 형태로 제작되어 상기 투광체의 출광측에 부착되는 것을 특징으로 하는 백라이트 유닛.
- 제1항에 있어서,상기 프리즘의 꼭지각은 80∼120도인 것을 특징으로 하는 백라이트 유닛.
- 삭제
- 제1항에 있어서,상기 투광부의 폭은 상기 도광판으로 입사되는 광의 반치각이 최소가 되는 폭과 단위 입체각당의 광속이 최대가 되는 폭의 사이에서 결정되는 것을 특징으로 하는 백라이트 유닛.
- 제1항에 있어서,상기 투광부는, 상기 점광원으로부터 방출된 광의 광축으로부터 ±12도 범위의 광을 통과시킬 수 있도록 형성되는 것을 특징으로 하는 백라이트 유닛.
- 삭제
- 삭제
- 삭제
- 제1항에 있어서,상기 도광판에는 회절격자구조를 가지는 홀로그램패턴이 형성된 것을 특징으로 하는 백라이트 유닛.
- 삭제
- 제1, 4, 6, 7, 11항 중 어느 한 항에 있어서,상기 도광판의 상기 점광원쪽 가장자리로부터 내측으로 소정 간격 이격된 위치에서는 상기 도광판을 수직으로 관통하는 중공부가 형성되고, 상기 프리즘 어레이와 상기 투광부는 상기 중공부의 상기 점광원쪽 가장자리에 형성된 것을 특징으로 하는 백라이트 유닛.
- 삭제
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Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2002-0067969A KR100499133B1 (ko) | 2002-11-04 | 2002-11-04 | 백라이트 유닛 |
JP2003370448A JP4278486B2 (ja) | 2002-11-04 | 2003-10-30 | バックライトユニット |
CNB2003101141121A CN1266529C (zh) | 2002-11-04 | 2003-11-03 | 背光单元 |
EP12184997.0A EP2538131B1 (en) | 2002-11-04 | 2003-11-04 | Backlight unit |
US10/700,050 US7217025B2 (en) | 2002-11-04 | 2003-11-04 | Backlight unit |
EP03025378.5A EP1416302B1 (en) | 2002-11-04 | 2003-11-04 | Backlight unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2002-0067969A KR100499133B1 (ko) | 2002-11-04 | 2002-11-04 | 백라이트 유닛 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20040039785A KR20040039785A (ko) | 2004-05-12 |
KR100499133B1 true KR100499133B1 (ko) | 2005-07-04 |
Family
ID=32089790
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR10-2002-0067969A KR100499133B1 (ko) | 2002-11-04 | 2002-11-04 | 백라이트 유닛 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7217025B2 (ko) |
EP (2) | EP1416302B1 (ko) |
JP (1) | JP4278486B2 (ko) |
KR (1) | KR100499133B1 (ko) |
CN (1) | CN1266529C (ko) |
Cited By (1)
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KR101640397B1 (ko) * | 2015-09-17 | 2016-07-18 | 주식회사 영우 | Led용 패드 조성물 |
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Also Published As
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EP2538131B1 (en) | 2017-02-08 |
EP2538131A1 (en) | 2012-12-26 |
CN1499264A (zh) | 2004-05-26 |
EP1416302A2 (en) | 2004-05-06 |
EP1416302B1 (en) | 2014-05-14 |
US7217025B2 (en) | 2007-05-15 |
CN1266529C (zh) | 2006-07-26 |
US20040170011A1 (en) | 2004-09-02 |
EP1416302A3 (en) | 2010-12-01 |
JP4278486B2 (ja) | 2009-06-17 |
JP2004158452A (ja) | 2004-06-03 |
KR20040039785A (ko) | 2004-05-12 |
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