JP5709599B2 - 導光板及びこれを備えたバックライトユニット - Google Patents
導光板及びこれを備えたバックライトユニット Download PDFInfo
- Publication number
- JP5709599B2 JP5709599B2 JP2011062957A JP2011062957A JP5709599B2 JP 5709599 B2 JP5709599 B2 JP 5709599B2 JP 2011062957 A JP2011062957 A JP 2011062957A JP 2011062957 A JP2011062957 A JP 2011062957A JP 5709599 B2 JP5709599 B2 JP 5709599B2
- Authority
- JP
- Japan
- Prior art keywords
- light guide
- guide member
- light
- inclined surface
- backlight unit
- Prior art date
- Legal status (The legal status 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 status listed.)
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Links
- 230000003287 optical effect Effects 0.000 claims description 8
- 239000003086 colorant Substances 0.000 claims description 4
- 238000009792 diffusion process Methods 0.000 claims description 3
- 239000000758 substrate Substances 0.000 description 7
- 239000004973 liquid crystal related substance Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000005401 electroluminescence Methods 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
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
- G02B6/0075—Arrangements of multiple light guides
- G02B6/0076—Stacked arrangements of multiple light guides of the same or different cross-sectional area
-
- 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
- G02B6/0045—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 by shaping at least a portion of the light guide
- G02B6/0046—Tapered light guide, e.g. wedge-shaped light guide
-
- 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
- G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
-
- 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
- G02B6/0066—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 characterised by the light source being coupled to the light guide
- G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Description
Claims (11)
- 第1傾斜面を有する第1導光部材と、
前記第1導光部材と互いに異なる屈折率を有し、第2傾斜面を有する第2導光部材と、
を含み、
前記第1傾斜面と第2傾斜面とが対向するように前記第2導光部材の上に前記第1導光部材が配置され、前記第1導光部材及び前記第2導光部材は各々の側面で光源からの光を収容し、
前記第1導光部材と前記第2導光部材との間には空気層が介在し、
前記第2導光部材の屈折率は、前記第1導光部材の屈折率より大きいことを特徴とする導光板。 - 前記第1導光部材は上側を形成する上部面を有し、
前記上部面または第1傾斜面にはパターン部が形成されることを特徴とする請求項1に記載の導光板。 - 前記第1導光部材の前記第1傾斜面に第1パターンが形成され、
前記第2導光部材は下側を形成する下部面を有し、
前記第2導光部材の前記下部面に第2パターンが形成されることを特徴とする請求項1に記載の導光板。 - 第1傾斜面を有する第1導光部材と前記第1導光部材と互いに異なる屈折率を有し、第2傾斜面を有する第2導光部材とを含み、前記第1傾斜面と第2傾斜面とが対向するように前記第2導光部材の上に前記第1導光部材が配置される導光板と、
前記導光板の上に配置される光学部材と、
前記第1導光部材の一側に配置される第1発光モジュールと、
前記第2導光部材の一側に配置される第2発光モジュールと、
前記第2導光部材の下部に配置される反射部材と、を含み、
前記第1導光部材と前記第2導光部材との間には空気層が介在し、
前記第2導光部材の屈折率は、前記第1導光部材の屈折率より大きいことを特徴とするバックライトユニット。 - 前記第1発光モジュールに取り付けられる発光ダイオードと、前記第2発光モジュールに取り付けられる発光ダイオードとは、モジュール別に互いに異なる色を発生させることを特徴とする請求項4に記載のバックライトユニット。
- 前記第1発光モジュールまたは第2発光モジュールに取り付けられる発光ダイオードは、互いに異なる色の発光ダイオードで配置されることを特徴とする請求項4に記載のバックライトユニット。
- 前記第1導光部材は上側を形成する上部面を有し、
前記上部面または第1傾斜面には複数のパターン部が形成されることを特徴とする請求項4に記載のバックライトユニット。 - 前記第1導光部材の前記第1傾斜面に第1パターンが形成され、
前記第2導光部材は下側を形成する下部面を有し、
前記第2導光部材の前記下部面に第2パターンが形成されることを特徴とする請求項4に記載のバックライトユニット。 - 前記光学部材は、拡散シート、プリズムシート、蛍光シートのうち、少なくとも1つを含むことを特徴とする請求項4から8のいずれかに記載のバックライトユニット。
- 前記バックライトユニットは前記光学部材の上に配置される表示パネルに光を照射することを特徴とする請求項4から9のいずれかに記載のバックライトユニット。
- 前記第1及び第2発光モジュールは少なくとも1つの発光ダイオードを含むことを特徴とする請求項4から10のいずれかに記載のバックライトユニット。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020100027408A KR101028210B1 (ko) | 2010-03-26 | 2010-03-26 | 도광판 및 이를 구비한 백라이트 유닛 |
KR10-2010-0027408 | 2010-03-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2011210722A JP2011210722A (ja) | 2011-10-20 |
JP5709599B2 true JP5709599B2 (ja) | 2015-04-30 |
Family
ID=44065313
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2011062957A Active JP5709599B2 (ja) | 2010-03-26 | 2011-03-22 | 導光板及びこれを備えたバックライトユニット |
Country Status (5)
Country | Link |
---|---|
US (1) | US8419258B2 (ja) |
EP (1) | EP2369375B1 (ja) |
JP (1) | JP5709599B2 (ja) |
KR (1) | KR101028210B1 (ja) |
CN (1) | CN102200608A (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2983976B1 (fr) * | 2011-12-13 | 2017-10-20 | Optinvent | Guide optique a elements de guidage superposes et procede de fabrication |
TWI461799B (zh) * | 2011-12-23 | 2014-11-21 | Wistron Corp | 具有可撓式顯示面板的電子裝置及背光模組 |
TW201329566A (zh) * | 2012-01-06 | 2013-07-16 | Primax Electronics Ltd | 具有多層發光圖案之顯示裝置以及輸入裝置 |
US9110216B2 (en) | 2012-11-07 | 2015-08-18 | Cooper Technologies Company | Edgelit lighting fixture and assembly |
TW201610342A (zh) * | 2014-09-09 | 2016-03-16 | 鴻海精密工業股份有限公司 | Led車燈 |
US9857523B2 (en) * | 2014-11-24 | 2018-01-02 | Electronics And Telecommunications Research Institute | Apparatus for controlling light beam path |
CN104977648B (zh) * | 2015-06-24 | 2018-03-09 | 武汉华星光电技术有限公司 | 导光板、背光模组及显示装置 |
CN106125189B (zh) * | 2016-08-30 | 2019-11-22 | 京东方科技集团股份有限公司 | 一种背光模组及其控制方法、显示装置 |
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JPH08240721A (ja) | 1995-03-02 | 1996-09-17 | Meitaku Syst:Kk | 照明輝度調節可能な液晶バックライト |
JPH09189907A (ja) * | 1996-01-09 | 1997-07-22 | Hitachi Ltd | 照明装置 |
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JP2000003609A (ja) * | 1998-06-16 | 2000-01-07 | Enplas Corp | サイドライト型面光源装置及び液晶表示装置 |
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JP2004526290A (ja) * | 2001-04-10 | 2004-08-26 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 照明系およびディスプレイデバイス |
JP3760900B2 (ja) * | 2001-09-06 | 2006-03-29 | セイコーエプソン株式会社 | 導光装置、電気光学装置及び電子機器 |
JP2003222863A (ja) | 2002-01-31 | 2003-08-08 | Optrex Corp | 液晶表示素子 |
TWI300500B (en) * | 2003-06-03 | 2008-09-01 | Au Optronics Corp | Liquid crystal display |
TW200523503A (en) * | 2003-09-29 | 2005-07-16 | Sony Corp | Backlight, light guiding plate, method for manufacturing diffusion plate and light guiding plate, and liquid crystal display device |
US20050168967A1 (en) * | 2004-01-30 | 2005-08-04 | Ko-Chia Kao | Backlight module |
KR20060104513A (ko) * | 2005-03-30 | 2006-10-09 | 엘지.필립스 엘시디 주식회사 | 액정표시장치용 도광판과 이를 포함하는 배광장치 |
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CN101609230B (zh) * | 2008-06-18 | 2011-12-14 | 鸿富锦精密工业(深圳)有限公司 | 背光模组 |
CN102124384B (zh) * | 2008-07-10 | 2016-10-12 | 3M创新有限公司 | 粘弹性光导 |
-
2010
- 2010-03-26 KR KR1020100027408A patent/KR101028210B1/ko not_active IP Right Cessation
-
2011
- 2011-03-22 JP JP2011062957A patent/JP5709599B2/ja active Active
- 2011-03-23 US US13/069,617 patent/US8419258B2/en active Active
- 2011-03-23 EP EP11159310.9A patent/EP2369375B1/en active Active
- 2011-03-28 CN CN2011100788317A patent/CN102200608A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
CN102200608A (zh) | 2011-09-28 |
JP2011210722A (ja) | 2011-10-20 |
EP2369375A1 (en) | 2011-09-28 |
US8419258B2 (en) | 2013-04-16 |
EP2369375B1 (en) | 2020-06-17 |
US20110211365A1 (en) | 2011-09-01 |
KR101028210B1 (ko) | 2011-04-11 |
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