JP5085645B2 - 発光素子および液晶表示装置 - Google Patents
発光素子および液晶表示装置 Download PDFInfo
- Publication number
- JP5085645B2 JP5085645B2 JP2009512956A JP2009512956A JP5085645B2 JP 5085645 B2 JP5085645 B2 JP 5085645B2 JP 2009512956 A JP2009512956 A JP 2009512956A JP 2009512956 A JP2009512956 A JP 2009512956A JP 5085645 B2 JP5085645 B2 JP 5085645B2
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- JP
- Japan
- Prior art keywords
- light
- light emitting
- light guide
- emitting diode
- color
- 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.)
- Expired - Fee Related
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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
- G02B6/0066—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
-
- 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
-
- 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
- G02B6/0078—Side-by-side arrangements, e.g. for large area displays
- G02B6/008—Side-by-side arrangements, e.g. for large area displays of the partially overlapping type
-
- 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
- G02B6/0066—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
- G02B6/0073—Light emitting diode [LED]
-
- 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
- G02F1/133609—Direct backlight including means for improving the color mixing, e.g. white
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Description
2 光学ユニット
3 発光ダイオード
4 導光体
4b 側面
5 混色部
6 表示部
7 ドライバ(光度調整手段)
9 シャーシ
10 液晶表示装置
11 液晶パネル
12 照明装置
13 光学シート
14 反射シート
15 基板
R1<R2<R3・・・、
G11<G12<G21<G22・・・
B1<B2<B3・・・
というようにグラデーションを持たせて、導光体の中央から端に向かってLEDの光度が低くなるように構成してもよい。
Claims (5)
- 発光ダイオードの組み合わせからなる複数個の光源と、
各光源からの光を面発光させる導光体とを備え、
前記複数個の光源が前記導光体に沿って一定の順序で繰り返し並べられている発光素子において、
前記導光体は、各光源からの光を混色する混色部と、前記混色部によって混色した光を面発光させる表示部とを有し、
前記光源は、赤色発光ダイオード、緑色発光ダイオード、および青色発光ダイオードの何れかであり、
前記複数個の光源は、赤色発光ダイオード、緑色発光ダイオード、および青色発光ダイオードを組み合わせて構成されており、かつ、各色の発光ダイオードをそれぞれ複数含んでおり、
前記複数個の光源の光度は、同じ色の発光ダイオードの光度を比較したときにグラデーションを持って、前記導光体の中央から端へ向かうにしたがって小さくなっていることを特徴とする発光素子。 - 前記各光源に供給する電流値を調整することによって、各光源の光度を調整する光度調整手段が設けられていることを特徴とする請求項1に記載の発光素子。
- 前記各光源に供給する電流のパルス幅を調整することによって、各光源の光度を調整する光度調整手段が設けられていることを特徴とする請求項1または2に記載の発光素子。
- 請求項1〜3の何れか1項に記載の発光素子において、
供給される電流に対する前記各光源の光度が、前記導光体の中央に配置されたものから前記導光体の端に配置されたものへ向かって小さくなるように、前記複数個の光源が前記導光体に沿って配置されていることを特徴とする発光素子。 - 液晶パネルと、該液晶パネルに光を照射するバックライトとを備えている液晶表示装置であって、
上記バックライトは、請求項1〜4の何れか1項に記載の発光素子を含んで構成されていることを特徴とする液晶表示装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009512956A JP5085645B2 (ja) | 2007-04-26 | 2008-04-24 | 発光素子および液晶表示装置 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007117770 | 2007-04-26 | ||
JP2007117770 | 2007-04-26 | ||
PCT/JP2008/057949 WO2008136359A1 (ja) | 2007-04-26 | 2008-04-24 | 発光素子および液晶表示装置 |
JP2009512956A JP5085645B2 (ja) | 2007-04-26 | 2008-04-24 | 発光素子および液晶表示装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2008136359A1 JPWO2008136359A1 (ja) | 2010-07-29 |
JP5085645B2 true JP5085645B2 (ja) | 2012-11-28 |
Family
ID=39943460
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2009512951A Pending JPWO2008136349A1 (ja) | 2007-04-26 | 2008-04-24 | 発光素子および液晶表示装置 |
JP2009512956A Expired - Fee Related JP5085645B2 (ja) | 2007-04-26 | 2008-04-24 | 発光素子および液晶表示装置 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2009512951A Pending JPWO2008136349A1 (ja) | 2007-04-26 | 2008-04-24 | 発光素子および液晶表示装置 |
Country Status (6)
Country | Link |
---|---|
US (2) | US20100110339A1 (ja) |
EP (2) | EP2172698A1 (ja) |
JP (2) | JPWO2008136349A1 (ja) |
CN (2) | CN101578480A (ja) |
BR (1) | BRPI0806882A2 (ja) |
WO (2) | WO2008136359A1 (ja) |
Families Citing this family (27)
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CN101578480A (zh) | 2007-04-26 | 2009-11-11 | 夏普株式会社 | 发光元件和液晶显示装置 |
JP2009123489A (ja) * | 2007-11-14 | 2009-06-04 | Sony Corp | 面光源装置及び液晶表示装置 |
JP5179908B2 (ja) * | 2008-03-12 | 2013-04-10 | スタンレー電気株式会社 | 面光源照明装置 |
JP2010067439A (ja) * | 2008-09-10 | 2010-03-25 | Harison Toshiba Lighting Corp | 面発光装置および表示装置 |
JP2010157455A (ja) * | 2008-12-29 | 2010-07-15 | Funai Electric Co Ltd | 液晶表示装置のバックライト |
JP4742153B2 (ja) * | 2009-01-30 | 2011-08-10 | キヤノン株式会社 | 原稿読取装置 |
JP2010177086A (ja) * | 2009-01-30 | 2010-08-12 | Hitachi Ltd | バックライトユニットおよびそれを用いた映像表示装置 |
ITTV20090058A1 (it) * | 2009-03-26 | 2010-09-27 | Giovine Vincenzo Di | Sistema di illuminazione laminare a led con effetto scattering indotto |
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WO2010147294A1 (ko) * | 2009-06-15 | 2010-12-23 | 엘지전자 주식회사 | 디스플레이 장치 |
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CN102004355A (zh) * | 2009-08-31 | 2011-04-06 | 日立民用电子株式会社 | 液晶显示装置 |
US20110051036A1 (en) * | 2009-08-31 | 2011-03-03 | Hitachi Consumer Electronics Co., Ltd. | Liquid Crystal Display Device |
JP2011053238A (ja) * | 2009-08-31 | 2011-03-17 | Hitachi Consumer Electronics Co Ltd | 液晶表示装置及びバックライト装置 |
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KR101706578B1 (ko) * | 2010-10-08 | 2017-02-16 | 엘지디스플레이 주식회사 | 백라이트 유닛 및 이를 포함하는 액정표시장치 모듈 |
US8632236B2 (en) * | 2011-11-04 | 2014-01-21 | GE Lighting Solutions, LLC | LED lighting module and lighting device comprised thereof |
JP5952557B2 (ja) * | 2011-12-26 | 2016-07-13 | 株式会社小糸製作所 | 発光モジュールおよび車両用灯具 |
US9310034B2 (en) * | 2012-01-25 | 2016-04-12 | Koninklijke Philips N.V. | Light emitting device for backlight device and method of operating the light emitting device |
CN102661572A (zh) * | 2012-04-18 | 2012-09-12 | 深圳市华星光电技术有限公司 | 上棱镜导光板及相应的背光模块 |
JP5952086B2 (ja) * | 2012-05-24 | 2016-07-13 | スタンレー電気株式会社 | 車両用灯具 |
CN108027117B (zh) * | 2015-09-24 | 2021-04-06 | 夏普株式会社 | 照明装置、显示装置以及电视接收装置 |
KR102463846B1 (ko) * | 2015-12-30 | 2022-11-04 | 엘지디스플레이 주식회사 | 백라이트 유닛 및 그를 포함하는 표시장치 |
CN105629577B (zh) * | 2016-03-31 | 2019-10-01 | 上海天马微电子有限公司 | 背光单元、显示屏及显示装置 |
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-
2008
- 2008-04-24 CN CNA200880001557XA patent/CN101578480A/zh active Pending
- 2008-04-24 US US12/530,323 patent/US20100110339A1/en not_active Abandoned
- 2008-04-24 EP EP08752048A patent/EP2172698A1/en not_active Withdrawn
- 2008-04-24 EP EP08752027A patent/EP2149745A1/en not_active Withdrawn
- 2008-04-24 WO PCT/JP2008/057949 patent/WO2008136359A1/ja active Application Filing
- 2008-04-24 BR BRPI0806882-8A patent/BRPI0806882A2/pt not_active IP Right Cessation
- 2008-04-24 WO PCT/JP2008/057928 patent/WO2008136349A1/ja active Application Filing
- 2008-04-24 US US12/521,813 patent/US8154689B2/en not_active Expired - Fee Related
- 2008-04-24 JP JP2009512951A patent/JPWO2008136349A1/ja active Pending
- 2008-04-24 JP JP2009512956A patent/JP5085645B2/ja not_active Expired - Fee Related
- 2008-04-24 CN CN200880007100A patent/CN101622494A/zh active Pending
Patent Citations (5)
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JP2006064899A (ja) * | 2004-08-26 | 2006-03-09 | Optrex Corp | 液晶表示装置 |
JP2006236951A (ja) * | 2005-02-28 | 2006-09-07 | Sharp Corp | 面照明装置及びそれを備えた液晶表示装置 |
JP2006269365A (ja) * | 2005-03-25 | 2006-10-05 | Mitsubishi Rayon Co Ltd | Led面光源装置 |
JP2006286638A (ja) * | 2005-04-01 | 2006-10-19 | Avago Technologies General Ip (Singapore) Private Ltd | 複数の隣り合って重なり合う導光板を有する発光装置 |
JP2007095635A (ja) * | 2005-09-30 | 2007-04-12 | Yamaguchi Univ | 表示ディスプレイにおける照明装置の調光制御を行う方法及び装置 |
Also Published As
Publication number | Publication date |
---|---|
CN101578480A (zh) | 2009-11-11 |
BRPI0806882A2 (pt) | 2015-06-16 |
EP2149745A1 (en) | 2010-02-03 |
US8154689B2 (en) | 2012-04-10 |
WO2008136359A1 (ja) | 2008-11-13 |
CN101622494A (zh) | 2010-01-06 |
JPWO2008136359A1 (ja) | 2010-07-29 |
EP2172698A1 (en) | 2010-04-07 |
WO2008136349A1 (ja) | 2008-11-13 |
US20100103346A1 (en) | 2010-04-29 |
JPWO2008136349A1 (ja) | 2010-07-29 |
US20100110339A1 (en) | 2010-05-06 |
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