JP4075000B2 - 面状照明装置 - Google Patents
面状照明装置 Download PDFInfo
- Publication number
- JP4075000B2 JP4075000B2 JP2004053959A JP2004053959A JP4075000B2 JP 4075000 B2 JP4075000 B2 JP 4075000B2 JP 2004053959 A JP2004053959 A JP 2004053959A JP 2004053959 A JP2004053959 A JP 2004053959A JP 4075000 B2 JP4075000 B2 JP 4075000B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- guide plate
- light guide
- led
- prism
- 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
- G02B6/0013—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
- G02B6/0031—Reflecting element, sheet or layer
-
- 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
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
-
- 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
-
- 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
Description
上記課題を解決するために、請求項1に係る面状照明装置の発明は、導光板の入射面に配置した点状光源からの出射光を、前記導光板の出射面より出射するサイドライト方式の面状照明装置において、前記導光板の出射面またはその出射面と対向する面のいずれか一方の面、または両方の面に、前記導光板の入射面近傍と前記点状光源とを覆うように反射シートが設けられ、該反射シートの前記点状光源を覆う部位にプリズム列からなる光分散部が形成され、前記プリズム列の稜線は前記入光面に対して直交する方向に延びていることを特徴とするものである。
図1は、面状照明装置の分解斜視図である。導光板2の一側端面4に近接して点状光源1が配置されている。点状光源1から出射された光は、導光板2の出射面3から出射して被照明体20側に導かれるように構成されている。点状光源1は、例えば、LEDチップがケースによって覆われ、ケースには出射窓が形成されていて、出射窓から一方向へ出射光が効率よく出射されるように構成されている。以下、出射光が効率よく出射される前記LEDの一方向をLEDの正面側という。点状光源(LED)1は、この正面側が導光板2の一側端面4に対向するように配置される。導光板2の一側端面4のことを、以下、入射面4ともいう。LED1から出射された光は、効率よくこの入射面4へ入射する。LEDチップから出射された光の一部は、LEDチップがケースによって覆われているが、LEDの正面側以外の面、例えば、LEDの上面、下面、左右側面側から漏れ光となって放射される。
2 導光板
3 出射面
4 入射面
5 裏面
6 反射板
7 光拡散シート
8、9 輝度増大フィルム
10 反射シート
11 光分散部
13 頂角
14 プリズム列の稜線方向
Claims (4)
- 導光板の入射面に配置した点状光源からの出射光を、前記導光板の出射面より出射するサイドライト方式の面状照明装置において、
前記導光板の出射面またはその出射面と対向する面のいずれか一方の面、または両方の面に、前記導光板の入射面近傍と前記点状光源とを覆うように反射シートが設けられ、該反射シートの前記点状光源を覆う部位にプリズム列からなる光分散部が形成され、前記プリズム列の稜線は前記入光面に対して直交する方向に延びていることを特徴とする面状照明装置。 - 前記プリズム列の頂点は、前記導光板の出射面を向いていることを特徴とする請求項1に記載の面状照明装置。
- 前記プリズム列の頂角は、中央部から周辺部に向かうに従って大きくなるように形成されていることを特徴とする請求項1または2に記載の面状照明装置。
- 前記プリズム列から構成された光分散部は、前記導光板の出射面上に配置される輝度増大フィルムの一部により構成されていることを特徴とする請求項1に記載の面状照明装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004053959A JP4075000B2 (ja) | 2004-02-27 | 2004-02-27 | 面状照明装置 |
US10/590,112 US20070165419A1 (en) | 2004-02-27 | 2004-08-27 | Spread illuminating apparatus having light reflecting sheet with light diffusing portions |
CNA2004800420784A CN1922436A (zh) | 2004-02-27 | 2004-08-27 | 平面形照明装置 |
KR1020067017176A KR20060126577A (ko) | 2004-02-27 | 2004-08-27 | 면상 조명 장치 |
PCT/JP2004/012391 WO2005083319A1 (ja) | 2004-02-27 | 2004-08-27 | 面状照明装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004053959A JP4075000B2 (ja) | 2004-02-27 | 2004-02-27 | 面状照明装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005243522A JP2005243522A (ja) | 2005-09-08 |
JP4075000B2 true JP4075000B2 (ja) | 2008-04-16 |
Family
ID=34908772
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004053959A Expired - Fee Related JP4075000B2 (ja) | 2004-02-27 | 2004-02-27 | 面状照明装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20070165419A1 (ja) |
JP (1) | JP4075000B2 (ja) |
KR (1) | KR20060126577A (ja) |
CN (1) | CN1922436A (ja) |
WO (1) | WO2005083319A1 (ja) |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007080544A (ja) * | 2005-09-09 | 2007-03-29 | Citizen Electronics Co Ltd | 照明装置 |
JP4775578B2 (ja) | 2006-10-26 | 2011-09-21 | ミネベア株式会社 | 面状照明装置 |
TWI324278B (en) * | 2006-12-06 | 2010-05-01 | Au Optronics Corp | Backlight module |
CN101358710B (zh) * | 2007-08-03 | 2012-02-29 | 北京京东方光电科技有限公司 | 发光二极管背光源装置 |
US8047697B2 (en) | 2007-09-10 | 2011-11-01 | Sharp Kabushiki Kaisha | Backlight |
JP4941189B2 (ja) * | 2007-09-12 | 2012-05-30 | エプソンイメージングデバイス株式会社 | 照明装置、液晶装置及び電子機器 |
CN101393709A (zh) * | 2007-09-21 | 2009-03-25 | 富士迈半导体精密工业(上海)有限公司 | 广告看板 |
KR101587558B1 (ko) * | 2008-02-07 | 2016-01-21 | 소니 주식회사 | 도광판, 면 발광장치, 액정표시장치 및 도광판의 제조방법 |
KR101450810B1 (ko) * | 2008-06-02 | 2014-10-14 | 삼성디스플레이 주식회사 | 백라이트 어셈블리 및 이를 갖는 표시장치 |
CN101285963B (zh) * | 2008-06-06 | 2010-04-07 | 友达光电股份有限公司 | 背光模块 |
KR100975770B1 (ko) * | 2008-06-30 | 2010-08-17 | 주식회사 에이엘 | 경첩형 방수 조명판넬 |
CN102187146B (zh) * | 2008-10-15 | 2013-12-11 | 夏普株式会社 | 照明装置、显示装置和电视接收装置 |
TW201035641A (en) * | 2009-03-19 | 2010-10-01 | Advanced Optoelectronic Tech | Backlight module |
JP5229040B2 (ja) * | 2009-03-24 | 2013-07-03 | 株式会社Jvcケンウッド | 照明装置及び液晶表示装置 |
JP2012113822A (ja) * | 2009-03-26 | 2012-06-14 | Stanley Electric Co Ltd | 面光源装置 |
CN101852363B (zh) * | 2009-03-31 | 2013-01-16 | 展晶科技(深圳)有限公司 | 背光模块 |
KR101725931B1 (ko) * | 2010-03-24 | 2017-04-12 | 삼성디스플레이 주식회사 | 백라이트 어셈블리 및 이를 갖는 표시장치 |
JP5267531B2 (ja) * | 2010-10-01 | 2013-08-21 | オムロン株式会社 | 導光パネル |
CN102080789B (zh) * | 2010-10-28 | 2012-08-15 | 友达光电股份有限公司 | 液晶显示器及其背光模块 |
JP5512506B2 (ja) | 2010-12-24 | 2014-06-04 | パナソニック液晶ディスプレイ株式会社 | 液晶表示装置 |
WO2012165248A1 (ja) * | 2011-05-30 | 2012-12-06 | シャープ株式会社 | 照明装置、表示装置、及びテレビ受信装置 |
WO2012165247A1 (ja) * | 2011-05-30 | 2012-12-06 | シャープ株式会社 | 照明装置、表示装置、及びテレビ受信装置 |
KR101767973B1 (ko) | 2011-08-16 | 2017-08-16 | 삼성디스플레이 주식회사 | 백라이트 어셈블리 |
US8746944B2 (en) | 2011-11-28 | 2014-06-10 | Blackberry Limited | Light guide apparatus having a light source and a reflector |
EP2597363A1 (en) * | 2011-11-28 | 2013-05-29 | Research In Motion Limited | Light guide apparatus |
US9134004B2 (en) | 2012-04-27 | 2015-09-15 | Cerno Llc | Lighting system for art works |
CN103032766A (zh) * | 2012-12-12 | 2013-04-10 | 京东方科技集团股份有限公司 | 一种背光模组以及显示装置 |
TWI501008B (zh) * | 2013-09-06 | 2015-09-21 | Lextar Electronics Corp | 背光模組 |
KR20190079741A (ko) * | 2017-12-27 | 2019-07-08 | 삼성디스플레이 주식회사 | 백라이트 유닛을 포함하는 표시 장치 및 백라이트 유닛의 제조 방법 |
TWI723796B (zh) * | 2020-03-06 | 2021-04-01 | 瑞儀光電股份有限公司 | 光源組件、背光模組,及顯示裝置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11258600A (ja) * | 1998-03-10 | 1999-09-24 | Denso Corp | 液晶パネル用面光源装置 |
US6164790A (en) * | 1998-12-17 | 2000-12-26 | Lg. Philips Lcd Co., Ltd. | Back light unit for a liquid crystal display device |
JP2003141918A (ja) * | 2001-11-01 | 2003-05-16 | Sanyo Electric Co Ltd | 面光源装置 |
JP2003242817A (ja) * | 2002-02-13 | 2003-08-29 | Matsushita Electric Ind Co Ltd | バックライト装置 |
JP2003331629A (ja) * | 2002-03-05 | 2003-11-21 | Seiko Epson Corp | 照明装置、液晶装置及び電子機器 |
JP2003331628A (ja) * | 2002-03-05 | 2003-11-21 | Seiko Epson Corp | 照明装置、液晶装置及び電子機器 |
KR100967755B1 (ko) * | 2002-04-22 | 2010-07-05 | 미츠비시 레이온 가부시키가이샤 | 면 광원 장치 및 그것에 사용되는 도광체 |
-
2004
- 2004-02-27 JP JP2004053959A patent/JP4075000B2/ja not_active Expired - Fee Related
- 2004-08-27 KR KR1020067017176A patent/KR20060126577A/ko not_active Application Discontinuation
- 2004-08-27 US US10/590,112 patent/US20070165419A1/en not_active Abandoned
- 2004-08-27 WO PCT/JP2004/012391 patent/WO2005083319A1/ja active Application Filing
- 2004-08-27 CN CNA2004800420784A patent/CN1922436A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
US20070165419A1 (en) | 2007-07-19 |
JP2005243522A (ja) | 2005-09-08 |
CN1922436A (zh) | 2007-02-28 |
KR20060126577A (ko) | 2006-12-07 |
WO2005083319A1 (ja) | 2005-09-09 |
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