WO2008078543A1 - 面状照明装置とそれを用いた液晶表示装置 - Google Patents

面状照明装置とそれを用いた液晶表示装置 Download PDF

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Publication number
WO2008078543A1
WO2008078543A1 PCT/JP2007/073817 JP2007073817W WO2008078543A1 WO 2008078543 A1 WO2008078543 A1 WO 2008078543A1 JP 2007073817 W JP2007073817 W JP 2007073817W WO 2008078543 A1 WO2008078543 A1 WO 2008078543A1
Authority
WO
WIPO (PCT)
Prior art keywords
laser beam
planar illuminating
illuminating device
liquid crystal
crystal display
Prior art date
Application number
PCT/JP2007/073817
Other languages
English (en)
French (fr)
Inventor
Takayuki Nagata
Tatsuo Itoh
Kazuhisa Yamamoto
Original Assignee
Panasonic Corporation
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Panasonic Corporation filed Critical Panasonic Corporation
Priority to US12/521,046 priority Critical patent/US8206020B2/en
Priority to JP2008551021A priority patent/JP5149200B2/ja
Publication of WO2008078543A1 publication Critical patent/WO2008078543A1/ja

Links

Classifications

    • 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
    • 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
    • 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
    • G02B6/0048—Tapered light guide, e.g. wedge-shaped light guide with stepwise 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
    • G02B6/0056—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
    • 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
    • G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
    • G02B6/0061—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to provide homogeneous light output intensity
    • 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
    • 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)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

Abstract

　直線偏光のレーザ光を出射する光源部（１）と、直方体の一方主面上にミラー列（１２ｃ）を有した形状であり、当該ミラー列（１２ｃ）は、一方主面と垂直な入射面（１２ａ）から入射されるレーザ光を全反射させて、一方主面と垂直な出射面（１２ｂ）から出射させる複数の反射面が、階段状に段差を設けて形成された構造である導光体（１２）と、導光体（１２）から出射されたレーザ光を入射面（３ａ）から入射して、出射面（３ｂ）から出射する導光板（３）とを備える。
PCT/JP2007/073817 2006-12-26 2007-12-11 面状照明装置とそれを用いた液晶表示装置 WO2008078543A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/521,046 US8206020B2 (en) 2006-12-26 2007-12-11 Planar illuminating device and liquid crystal display device using the same
JP2008551021A JP5149200B2 (ja) 2006-12-26 2007-12-11 面状照明装置とそれを用いた液晶表示装置

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2006-349167 2006-12-26
JP2006349167 2006-12-26
JP2007096228 2007-04-02
JP2007-096228 2007-04-02
JP2007-186624 2007-07-18
JP2007186624 2007-07-18

Publications (1)

Publication Number Publication Date
WO2008078543A1 true WO2008078543A1 (ja) 2008-07-03

Family

ID=39562337

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/073817 WO2008078543A1 (ja) 2006-12-26 2007-12-11 面状照明装置とそれを用いた液晶表示装置

Country Status (3)

Country Link
US (1) US8206020B2 (ja)
JP (1) JP5149200B2 (ja)
WO (1) WO2008078543A1 (ja)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009031289A1 (ja) * 2007-09-04 2009-03-12 Panasonic Corporation 面状照明装置及びこれを用いた液晶表示装置
JP2011113673A (ja) * 2009-11-24 2011-06-09 Panasonic Electric Works Co Ltd 照明装置
JP2012230893A (ja) * 2011-04-15 2012-11-22 Semiconductor Energy Lab Co Ltd 導光素子、バックライトユニット、表示装置
CN103775920A (zh) * 2014-01-29 2014-05-07 京东方科技集团股份有限公司 一种扫描式背光模组及显示装置
US9817173B2 (en) 2012-02-17 2017-11-14 3M Innovative Properties Company Anamorphic light guide
US9823404B2 (en) 2012-02-17 2017-11-21 3M Innovative Properties Company Backlight system
JP2020507056A (ja) * 2016-12-03 2020-03-05 ウェイモ エルエルシー 開口部を用いる光検出用の導波路拡散板
WO2021176799A1 (ja) * 2020-03-02 2021-09-10 キヤノン株式会社 光学装置、車載システム、および移動装置
WO2021181960A1 (ja) * 2020-03-13 2021-09-16 オムロン株式会社 導光部材、導光部材ユニット、照明装置および表示装置
JP7505087B1 (ja) 2022-12-14 2024-06-24 ツー－シックス デラウェア インコーポレイテッド アドレス指定可能な深さ範囲および／または視野を有するセンサならびにそのようなセンサを有するコンピューティングデバイス

Families Citing this family (21)

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CN101506573B (zh) * 2006-09-26 2011-01-12 松下电器产业株式会社 面状照明装置及使用该面状照明装置的液晶显示装置
JP5028501B2 (ja) * 2010-01-20 2012-09-19 株式会社ジャパンディスプレイイースト 液晶表示装置
WO2012098739A1 (ja) * 2011-01-21 2012-07-26 三菱電機株式会社 面光源装置及び液晶表示装置
WO2012111283A1 (ja) * 2011-02-15 2012-08-23 三菱電機株式会社 面光源装置及び液晶表示装置
CN102087562B (zh) * 2011-02-28 2013-06-05 鸿富锦精密工业（深圳）有限公司 用于红外触摸屏的光路结构
KR101848719B1 (ko) * 2011-08-11 2018-04-16 삼성디스플레이 주식회사 백라이트 어셈블리
TWI462032B (zh) * 2011-12-22 2014-11-21 Pixart Imaging Inc 手寫系統及其操作方法
US9036964B2 (en) * 2012-02-17 2015-05-19 3M Innovative Properties Company Optical light guide coupler
WO2013122730A1 (en) * 2012-02-17 2013-08-22 3M Innovative Properties Company Backlight light guide
US9039905B2 (en) 2012-02-17 2015-05-26 3M Innovative Properties Company Method of forming a lighting system
KR20150091375A (ko) 2012-12-05 2015-08-10 쓰리엠 이노베이티브 프로퍼티즈 컴파니 왜상 광학 패키지
TWI572951B (zh) * 2013-05-28 2017-03-01 鴻海精密工業股份有限公司 液晶顯示裝置及其背光模組
US10222535B2 (en) * 2013-07-02 2019-03-05 3M Innovative Properties Company Flat light guide
KR20150115082A (ko) 2014-04-02 2015-10-14 삼성디스플레이 주식회사 백라이트 유닛 및 이를 포함하는 표시 장치
US9417449B2 (en) * 2014-04-06 2016-08-16 Che-Chang Hu Head-up display system
JP6592375B2 (ja) * 2016-02-24 2019-10-16 株式会社ジャパンディスプレイ 表示装置
KR102399100B1 (ko) * 2017-06-16 2022-05-18 삼성디스플레이 주식회사 백라이트 유닛 및 이를 포함하는 표시 장치
CN107329325B (zh) * 2017-08-31 2020-03-13 京东方科技集团股份有限公司 匀光结构、前置光源及显示装置
TWI668500B (zh) * 2018-03-27 2019-08-11 National Taiwan Normal University 光調節裝置及具有該光調節裝置的背光模組
CN110058456B (zh) * 2019-05-05 2021-10-08 京东方科技集团股份有限公司 面光源装置及其驱动方法、背光装置、显示装置
CN110967874B (zh) * 2019-12-20 2024-06-21 合肥疆程技术有限公司 一种车载抬头显示***

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JPH11144514A (ja) * 1997-11-07 1999-05-28 Sharp Corp 照明装置および液晶表示装置
JP2002098838A (ja) * 2000-07-19 2002-04-05 Sanyo Electric Co Ltd 棒状導光体及びそれを用いた線状照明装置並びにこの線状照明装置を用いた面状照明装置
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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009031289A1 (ja) * 2007-09-04 2009-03-12 Panasonic Corporation 面状照明装置及びこれを用いた液晶表示装置
JPWO2009031289A1 (ja) * 2007-09-04 2010-12-09 パナソニック株式会社 面状照明装置及びこれを用いた液晶表示装置
US8184238B2 (en) 2007-09-04 2012-05-22 Panasonic Corporation Planar illumination device and liquid crystal display device using the same
JP5087087B2 (ja) * 2007-09-04 2012-11-28 パナソニック株式会社 面状照明装置及びこれを用いた液晶表示装置
JP2011113673A (ja) * 2009-11-24 2011-06-09 Panasonic Electric Works Co Ltd 照明装置
JP2012230893A (ja) * 2011-04-15 2012-11-22 Semiconductor Energy Lab Co Ltd 導光素子、バックライトユニット、表示装置
US9823404B2 (en) 2012-02-17 2017-11-21 3M Innovative Properties Company Backlight system
US9817173B2 (en) 2012-02-17 2017-11-14 3M Innovative Properties Company Anamorphic light guide
US9678263B2 (en) 2014-01-29 2017-06-13 Boe Technology Group Co., Ltd. Scanning type backlight module and display device
CN103775920B (zh) * 2014-01-29 2015-12-30 京东方科技集团股份有限公司 一种扫描式背光模组及显示装置
CN103775920A (zh) * 2014-01-29 2014-05-07 京东方科技集团股份有限公司 一种扫描式背光模组及显示装置
JP2020507056A (ja) * 2016-12-03 2020-03-05 ウェイモ エルエルシー 開口部を用いる光検出用の導波路拡散板
US11041753B2 (en) 2016-12-03 2021-06-22 Waymo Llc Light detection using an aperture
JP7005621B2 (ja) 2016-12-03 2022-01-21 ウェイモ エルエルシー 開口部を用いる光検出用の導波路拡散板
WO2021176799A1 (ja) * 2020-03-02 2021-09-10 キヤノン株式会社 光学装置、車載システム、および移動装置
WO2021181960A1 (ja) * 2020-03-13 2021-09-16 オムロン株式会社 導光部材、導光部材ユニット、照明装置および表示装置
JP7505087B1 (ja) 2022-12-14 2024-06-24 ツー－シックス デラウェア インコーポレイテッド アドレス指定可能な深さ範囲および／または視野を有するセンサならびにそのようなセンサを有するコンピューティングデバイス

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Publication number Publication date
US8206020B2 (en) 2012-06-26
JPWO2008078543A1 (ja) 2010-04-22
US20090316431A1 (en) 2009-12-24
JP5149200B2 (ja) 2013-02-20

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