WO2009044521A1 - 光拡散シートおよび液晶表示装置 - Google Patents

光拡散シートおよび液晶表示装置 Download PDF

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Publication number
WO2009044521A1
WO2009044521A1 PCT/JP2008/002696 JP2008002696W WO2009044521A1 WO 2009044521 A1 WO2009044521 A1 WO 2009044521A1 JP 2008002696 W JP2008002696 W JP 2008002696W WO 2009044521 A1 WO2009044521 A1 WO 2009044521A1
Authority
WO
WIPO (PCT)
Prior art keywords
light diffusion
refractive
diffusion layer
index
substance
Prior art date
Application number
PCT/JP2008/002696
Other languages
English (en)
French (fr)
Inventor
Iori Aoyama
Tokio Taguchi
Yusuke Nishihara
Akihiro Yamamoto
Masumi Kubo
Original Assignee
Sharp Kabushiki Kaisha
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 Sharp Kabushiki Kaisha filed Critical Sharp Kabushiki Kaisha
Priority to US12/681,414 priority Critical patent/US20100245737A1/en
Priority to CN200880109659A priority patent/CN101809488A/zh
Publication of WO2009044521A1 publication Critical patent/WO2009044521A1/ja

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0273—Diffusing elements; Afocal elements characterized by the use
    • G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/0257—Diffusing elements; Afocal elements characterised by the diffusing properties creating an anisotropic diffusion characteristic, i.e. distributing output differently in two perpendicular axes
    • 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
    • G02F1/133524—Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides
    • 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
    • G02F1/133504—Diffusing, scattering, diffracting elements

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)
  • Optical Elements Other Than Lenses (AREA)
  • Liquid Crystal (AREA)

Abstract

　本発明の光拡散シートおよび液晶表示装置が有する光拡散層１０は、屈折率の低い物質（第２物質）が、主面に垂直な断面におけるそれぞれの形状が観察者側に底辺を有し、液晶表示パネル側に頂点を有する二等辺三角形に近似される複数の低屈折率領域（第２領域）１４を形成している。複数の低屈折率領域は、高屈折率物質（第１物質）から形成された高屈折率領域（第１領域）内に、主面に平行な面内の少なくとも１つの方向において所定のピッチＰで配置されている。低屈折率領域の形状および大きさが所定の関係を満足するので、主面に垂直に入射する光は、光拡散層内で１回だけ全反射された後に光拡散層から観察者側に出射し、主面に傾斜した角度で入射する光の一部は、光拡散層内でｎ回（ｎは２以上の整数）以上全反射された後に光拡散層から観察者側に出射する。その結果、上記少なくとも１つの方向における視野角特性が向上させられる。
PCT/JP2008/002696 2007-10-03 2008-09-26 光拡散シートおよび液晶表示装置 WO2009044521A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/681,414 US20100245737A1 (en) 2007-10-03 2008-09-26 Light diffusion sheet and liquid crystal display device
CN200880109659A CN101809488A (zh) 2007-10-03 2008-09-26 光扩散片和液晶显示装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-259357 2007-10-03
JP2007259357 2007-10-03

Publications (1)

Publication Number Publication Date
WO2009044521A1 true WO2009044521A1 (ja) 2009-04-09

Family

ID=40525953

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/002696 WO2009044521A1 (ja) 2007-10-03 2008-09-26 光拡散シートおよび液晶表示装置

Country Status (3)

Country Link
US (1) US20100245737A1 (ja)
CN (1) CN101809488A (ja)
WO (1) WO2009044521A1 (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010257850A (ja) * 2009-04-27 2010-11-11 Kuraray Co Ltd 面光源素子およびそれを用いた画像表示装置
WO2013061875A1 (ja) * 2011-10-28 2013-05-02 シャープ株式会社 液晶表示装置
WO2014024814A1 (ja) * 2012-08-10 2014-02-13 シャープ株式会社 液晶表示装置
CN109683376A (zh) * 2017-10-19 2019-04-26 三星电子株式会社 显示装置

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101815965B (zh) * 2007-10-03 2012-01-25 夏普株式会社 光扩散片和液晶显示装置
WO2009066474A1 (ja) * 2007-11-22 2009-05-28 Sharp Kabushiki Kaisha 液晶表示装置
DE102009037240A1 (de) * 2009-08-12 2011-02-17 Siemens Aktiengesellschaft Verfahren und Vorrichtung zur Bestimmung chemischer und/oder physikalischer Eigenschaften von Betriebsstoffen in einer Maschinenanlage
KR20110109443A (ko) * 2010-03-31 2011-10-06 삼성코닝정밀소재 주식회사 디스플레이 장치용 컬러시프트 저감 광학필터 및 이의 제조방법
JP5770127B2 (ja) * 2012-03-12 2015-08-26 株式会社ジャパンディスプレイ 液晶表示装置
CN103869533B (zh) * 2014-03-25 2017-01-04 汕头超声显示器技术有限公司 一种改善底色的液晶显示器
CN104280811B (zh) * 2014-11-04 2017-09-22 深圳市华星光电技术有限公司 偏光片、液晶面板以及液晶显示器
JP6481649B2 (ja) * 2016-03-29 2019-03-13 株式会社デンソー ヘッドアップディスプレイ装置
JP2018059965A (ja) * 2016-09-30 2018-04-12 株式会社巴川製紙所 表示装置
CN109388012B (zh) * 2017-08-04 2020-12-18 深圳光峰科技股份有限公司 投影屏幕和投影***
FR3082631B1 (fr) * 2018-06-13 2021-01-15 Valeo Comfort & Driving Assistance Plaque translucide, procede de fabrication d'une telle plaque, appareil de projection et systeme d'affichage tete haute associes
JP2021071721A (ja) * 2019-10-25 2021-05-06 デクセリアルズ株式会社 拡散板、表示装置、投影装置及び照明装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07509327A (ja) * 1993-07-01 1995-10-12 アライド・シグナル・インコーポレイテツド テーパ付き導波管のアレイを備えた直視型表示装置
JPH08297210A (ja) * 1995-04-26 1996-11-12 Sumitomo Chem Co Ltd 光学フィルムおよび液晶表示装置
JP2005181691A (ja) * 2003-12-19 2005-07-07 Internatl Business Mach Corp <Ibm> 光学素子および該光学素子を用いるカラー表示装置
WO2005116698A1 (ja) * 2004-05-25 2005-12-08 Dai Nippon Printing Co., Ltd. 視野角制御シート

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2866540B2 (ja) * 1992-06-26 1999-03-08 シャープ株式会社 液晶表示装置
WO1996023245A1 (fr) * 1995-01-26 1996-08-01 Toray Industries, Inc. Dispositif d'affichage a cristaux liquides
DE69838927T2 (de) * 1997-06-12 2009-02-26 Sharp K.K. Anzeigevorrichtung mit vertical ausgerichtetem Flüssigkristall
KR100788524B1 (ko) * 2003-03-25 2007-12-24 다이니폰 인사츠 가부시키가이샤 확산시트, 이를 갖춘 투과형 스크린, 확산시트용 성형틀의제작방법 및 확산시트의 제조방법

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07509327A (ja) * 1993-07-01 1995-10-12 アライド・シグナル・インコーポレイテツド テーパ付き導波管のアレイを備えた直視型表示装置
JPH08297210A (ja) * 1995-04-26 1996-11-12 Sumitomo Chem Co Ltd 光学フィルムおよび液晶表示装置
JP2005181691A (ja) * 2003-12-19 2005-07-07 Internatl Business Mach Corp <Ibm> 光学素子および該光学素子を用いるカラー表示装置
WO2005116698A1 (ja) * 2004-05-25 2005-12-08 Dai Nippon Printing Co., Ltd. 視野角制御シート

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010257850A (ja) * 2009-04-27 2010-11-11 Kuraray Co Ltd 面光源素子およびそれを用いた画像表示装置
WO2013061875A1 (ja) * 2011-10-28 2013-05-02 シャープ株式会社 液晶表示装置
JPWO2013061875A1 (ja) * 2011-10-28 2015-04-02 シャープ株式会社 液晶表示装置
US9494724B2 (en) 2011-10-28 2016-11-15 Sharp Kabushiki Kaisha Liquid crystal display device
WO2014024814A1 (ja) * 2012-08-10 2014-02-13 シャープ株式会社 液晶表示装置
CN109683376A (zh) * 2017-10-19 2019-04-26 三星电子株式会社 显示装置

Also Published As

Publication number Publication date
US20100245737A1 (en) 2010-09-30
CN101809488A (zh) 2010-08-18

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