TW200730962A - Surface light source capable of changing range of spread angle of exit light, and liquid crystal display apparatus using this surface light source - Google Patents

Surface light source capable of changing range of spread angle of exit light, and liquid crystal display apparatus using this surface light source

Info

Publication number
TW200730962A
TW200730962A TW095147779A TW95147779A TW200730962A TW 200730962 A TW200730962 A TW 200730962A TW 095147779 A TW095147779 A TW 095147779A TW 95147779 A TW95147779 A TW 95147779A TW 200730962 A TW200730962 A TW 200730962A
Authority
TW
Taiwan
Prior art keywords
light source
light
surface light
exit
spread angle
Prior art date
Application number
TW095147779A
Other languages
English (en)
Other versions
TWI349814B (en
Inventor
Yasuhiro Daiku
Original Assignee
Casio Computer Co Ltd
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 Casio Computer Co Ltd filed Critical Casio Computer Co Ltd
Publication of TW200730962A publication Critical patent/TW200730962A/zh
Application granted granted Critical
Publication of TWI349814B publication Critical patent/TWI349814B/zh

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
    • G02B6/0033—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
    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0053—Prismatic sheet or layer; Brightness enhancement 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Liquid Crystal (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
TW095147779A 2005-12-21 2006-12-20 Liquid crystal display capable of changing range of spread angle of exit light TWI349814B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005368290A JP4600269B2 (ja) 2005-12-21 2005-12-21 液晶表示装置

Publications (2)

Publication Number Publication Date
TW200730962A true TW200730962A (en) 2007-08-16
TWI349814B TWI349814B (en) 2011-10-01

Family

ID=38173218

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095147779A TWI349814B (en) 2005-12-21 2006-12-20 Liquid crystal display capable of changing range of spread angle of exit light

Country Status (5)

Country Link
US (2) US20070139963A1 (zh)
JP (1) JP4600269B2 (zh)
KR (1) KR100840449B1 (zh)
CN (2) CN101635135B (zh)
TW (1) TWI349814B (zh)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI370929B (en) * 2006-12-28 2012-08-21 Ind Tech Res Inst Backlight modules for displays and displays
JP5293479B2 (ja) * 2009-07-17 2013-09-18 富士ゼロックス株式会社 画像読取装置及び画像形成装置
WO2011035418A1 (en) * 2009-09-23 2011-03-31 Peter Dobrich Enhanced display
JP2013047794A (ja) * 2011-07-28 2013-03-07 Fujifilm Corp 液晶表示装置
KR20130102679A (ko) * 2012-03-08 2013-09-23 삼성디스플레이 주식회사 광원 어셈블리 및 이를 포함하는 표시장치
KR101898471B1 (ko) * 2012-03-12 2018-09-14 삼성디스플레이 주식회사 도광판 및 이를 포함하는 표시 장치
US9389415B2 (en) 2012-04-27 2016-07-12 Leia Inc. Directional pixel for use in a display screen
US9459461B2 (en) 2012-05-31 2016-10-04 Leia Inc. Directional backlight
US9201270B2 (en) 2012-06-01 2015-12-01 Leia Inc. Directional backlight with a modulation layer
JP2014048323A (ja) * 2012-08-29 2014-03-17 Japan Display Inc 液晶表示装置の駆動方法
US9298168B2 (en) 2013-01-31 2016-03-29 Leia Inc. Multiview 3D wrist watch
MX344619B (es) 2013-03-15 2017-01-03 Morgan Solar Inc Panel de luz, montaje optico con interfaz mejorada y panel de luz con tolerancias mejoradas de fabricacion.
US9595627B2 (en) 2013-03-15 2017-03-14 John Paul Morgan Photovoltaic panel
US9960303B2 (en) 2013-03-15 2018-05-01 Morgan Solar Inc. Sunlight concentrating and harvesting device
US9714756B2 (en) 2013-03-15 2017-07-25 Morgan Solar Inc. Illumination device
WO2015016844A1 (en) * 2013-07-30 2015-02-05 Leia Inc. Multibeam diffraction grating-based backlighting
KR102097705B1 (ko) * 2013-09-10 2020-04-07 삼성디스플레이 주식회사 디스플레이 장치, 디스플레이 시스템 및 그 제어 방법
US11067736B2 (en) 2014-06-26 2021-07-20 Reald Spark, Llc Directional privacy display
US9557466B2 (en) 2014-07-30 2017-01-31 Leia, Inc Multibeam diffraction grating-based color backlighting
EP3243094B1 (en) 2015-01-10 2022-03-23 LEIA Inc. Multibeam grating-based backlight and a method of electronic display operation
KR102214345B1 (ko) 2015-01-10 2021-02-09 레이아 인코포레이티드 2차원/3차원(2d/3d) 전환가능 디스플레이 백라이트 및 전자 디스플레이
EP3243093B1 (en) 2015-01-10 2025-05-07 LEIA Inc. Diffraction grating-based backlighting having controlled diffractive coupling efficiency
WO2016118107A1 (en) 2015-01-19 2016-07-28 Leia Inc. Unidirectional grating-based backlighting employing a reflective island
JP6633087B2 (ja) 2015-01-28 2020-01-22 レイア、インコーポレイテッドＬｅｉａ Ｉｎｃ． ３次元（３ｄ）電子ディスプレイ
KR102329107B1 (ko) 2015-03-16 2021-11-18 레이아 인코포레이티드 각도 선택 반사층을 채용한 단일 방향 격자-기반 백라이팅
CN107533255A (zh) 2015-04-23 2018-01-02 镭亚股份有限公司 基于双光导光栅的背光以及使用该背光的电子显示器
KR102239156B1 (ko) 2015-05-09 2021-04-12 레이아 인코포레이티드 컬러-스캐닝 격자-기반 백라이트 및 이를 사용한 전자 디스플레이
EP3303088B1 (en) 2015-05-30 2020-06-24 LEIA Inc. Vehicle monitoring system
US10373544B1 (en) 2016-01-29 2019-08-06 Leia, Inc. Transformation from tiled to composite images
CA3007627C (en) * 2016-01-30 2021-05-25 Leia Inc. Privacy display and dual-mode privacy display system
JP6820940B2 (ja) * 2016-03-23 2021-01-27 レイア、インコーポレイテッドＬｅｉａ Ｉｎｃ． 反射格子島状構造を使用する格子ベースのバックライト
CN108287388A (zh) * 2018-02-23 2018-07-17 京东方科技集团股份有限公司 导光板、背光模组、显示装置及其驱动方法
KR102630999B1 (ko) * 2019-03-06 2024-02-01 삼성디스플레이 주식회사 표시 장치 및 표시 장치의 구동 방법

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5142275A (en) * 1984-12-10 1992-08-25 General Electric Company Method and means for manipulating images in a video display
JPH05142540A (ja) 1991-11-18 1993-06-11 Alps Electric Co Ltd 液晶表示装置
JP2000113706A (ja) 1998-10-05 2000-04-21 Casio Comput Co Ltd 面光源装置
JP3891387B2 (ja) * 2000-02-18 2007-03-14 株式会社エンプラス 面光源装置及び表示装置
JP2002008423A (ja) 2000-06-23 2002-01-11 Sanyo Electric Co Ltd バックライト装置
JP3928395B2 (ja) 2001-09-21 2007-06-13 オムロン株式会社 面光源装置
JP3912112B2 (ja) * 2002-01-10 2007-05-09 凸版印刷株式会社 光拡散体および液晶表示装置
JP4085360B2 (ja) * 2002-02-22 2008-05-14 ミネベア株式会社 面状照明装置
JP3956351B2 (ja) * 2002-03-28 2007-08-08 シチズン電子株式会社 導光板
JP4367054B2 (ja) * 2002-08-30 2009-11-18 日立化成工業株式会社 導光板及びバックライト装置
KR20050037595A (ko) * 2002-08-30 2005-04-22 히다치 가세고교 가부시끼가이샤 도광판 및 백라이트 장치
JP2004133334A (ja) 2002-10-15 2004-04-30 Toshiba Corp 覗きこみ防止装置及び覗きこみ防止方法
US7068336B2 (en) * 2002-12-13 2006-06-27 Lg.Philips Lcd Co., Ltd. Liquid crystal display device having variable viewing angle
KR100499140B1 (ko) * 2003-01-07 2005-07-04 삼성전자주식회사 백라이트 유닛
JP4247035B2 (ja) * 2003-04-21 2009-04-02 シチズン電子株式会社 面状光源
JP2005071610A (ja) * 2003-06-26 2005-03-17 Toyota Industries Corp 導光板及び面光源装置
JP2005024866A (ja) 2003-07-02 2005-01-27 Casio Comput Co Ltd 液晶表示装置
CN100395630C (zh) * 2003-07-04 2008-06-18 鸿富锦精密工业（深圳）有限公司 面光源装置
JP2005038749A (ja) 2003-07-16 2005-02-10 Kuraray Co Ltd 面光源素子およびそれを用いた表示装置
JP4274921B2 (ja) * 2003-12-10 2009-06-10 シャープ株式会社 照明装置およびそれを備えた表示装置
US7537372B2 (en) 2003-12-19 2009-05-26 Hitachi Chemical Company, Ltd. Back light device and liquid crystal display device
JP4285350B2 (ja) * 2004-02-26 2009-06-24 セイコーエプソン株式会社 視角制御素子およびその製造方法、液晶表示装置、電子機器
JP2005300673A (ja) * 2004-04-07 2005-10-27 Hitachi Displays Ltd 液晶表示装置
JP2005331565A (ja) * 2004-05-18 2005-12-02 Seiko Epson Corp 照明装置、液晶表示装置および電子機器
KR20050115717A (ko) * 2004-06-04 2005-12-08 주식회사 파인옵틱스 직선 경사 구조의 패턴을 이용한 도광판 및 그 제작 방법
CN100485482C (zh) * 2004-10-14 2009-05-06 清华大学 导光板和背光模组
JP4564830B2 (ja) * 2004-11-25 2010-10-20 Ｎｅｃ液晶テクノロジー株式会社 液晶表示装置及びその駆動方法
TWI315012B (en) * 2005-01-28 2009-09-21 Au Optronics Corporatio System of backlight module and lcd using the same

Also Published As

Publication number Publication date
US20090213300A1 (en) 2009-08-27
KR20070066912A (ko) 2007-06-27
CN101635135A (zh) 2010-01-27
JP2007171500A (ja) 2007-07-05
CN101029998A (zh) 2007-09-05
CN101635135B (zh) 2012-07-25
TWI349814B (en) 2011-10-01
KR100840449B1 (ko) 2008-06-20
HK1108493A1 (zh) 2008-05-09
US8279164B2 (en) 2012-10-02
US20070139963A1 (en) 2007-06-21
JP4600269B2 (ja) 2010-12-15
CN100533228C (zh) 2009-08-26

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Legal Events

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MM4A Annulment or lapse of patent due to non-payment of fees