WO2009044520A1 - 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
WO2009044520A1
WO2009044520A1 PCT/JP2008/002694 JP2008002694W WO2009044520A1 WO 2009044520 A1 WO2009044520 A1 WO 2009044520A1 JP 2008002694 W JP2008002694 W JP 2008002694W WO 2009044520 A1 WO2009044520 A1 WO 2009044520A1
Authority
WO
WIPO (PCT)
Prior art keywords
light diffusion
refractive
diffusion layer
index
substance
Prior art date
Application number
PCT/JP2008/002694
Other languages
English (en)
French (fr)
Inventor
Yusuke Nishihara
Iori Aoyama
Tokio Taguchi
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 CN200880110057XA priority Critical patent/CN101815965B/zh
Priority to US12/681,411 priority patent/US20100245736A1/en
Publication of WO2009044520A1 publication Critical patent/WO2009044520A1/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
    • 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)
  • Devices For Indicating Variable Information By Combining Individual Elements (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/JP2008/002694 2007-10-03 2008-09-26 光拡散シートおよび液晶表示装置 WO2009044520A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN200880110057XA CN101815965B (zh) 2007-10-03 2008-09-26 光扩散片和液晶显示装置
US12/681,411 US20100245736A1 (en) 2007-10-03 2008-09-26 Light diffusion sheet and liquid crystal display device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007259358 2007-10-03
JP2007-259358 2007-10-03

Publications (1)

Publication Number Publication Date
WO2009044520A1 true WO2009044520A1 (ja) 2009-04-09

Family

ID=40525952

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/002694 WO2009044520A1 (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) US20100245736A1 (ja)
CN (1) CN101815965B (ja)
WO (1) WO2009044520A1 (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014084261A1 (ja) * 2012-11-30 2014-06-05 シャープ株式会社 光制御フィルム及び表示装置
US9709841B2 (en) 2012-08-10 2017-07-18 Sharp Kabushiki Kaisha Liquid crystal display device
US10067379B2 (en) 2012-04-02 2018-09-04 Sharp Kabushiki Kaisha Liquid crystal display device

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009066473A1 (ja) * 2007-11-22 2009-05-28 Sharp Kabushiki Kaisha 液晶表示装置
KR20110109443A (ko) * 2010-03-31 2011-10-06 삼성코닝정밀소재 주식회사 디스플레이 장치용 컬러시프트 저감 광학필터 및 이의 제조방법
JP5916245B2 (ja) * 2011-12-27 2016-05-11 シャープ株式会社 液晶表示装置、光制御フィルム、表示装置
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
KR102070410B1 (ko) * 2013-06-04 2020-01-28 삼성전자주식회사 색 변화 저감용 광학 필름 및 이를 채용한 유기 발광 표시 장치
KR20150095976A (ko) * 2014-02-13 2015-08-24 삼성디스플레이 주식회사 액정 표시 장치
CN104635375A (zh) * 2015-02-25 2015-05-20 京东方科技集团股份有限公司 一种液晶显示面板及其制作方法、显示装置
WO2018194114A1 (ja) * 2017-04-19 2018-10-25 大日本印刷株式会社 光学構造体および表示装置
CN110794628B (zh) 2018-07-27 2023-05-02 乐金显示有限公司 显示设备
CN110082854B (zh) 2019-05-16 2020-12-01 京东方科技集团股份有限公司 一种背光模组及其制作方法、驱动方法、显示装置
WO2021182620A1 (ja) * 2020-03-13 2021-09-16 大日本印刷株式会社 表示装置及び光学フィルムの製造方法
JP7516796B2 (ja) * 2020-03-25 2024-07-17 大日本印刷株式会社 反射型スクリーン、映像表示装置
CN111796348A (zh) 2020-07-02 2020-10-20 Tcl华星光电技术有限公司 视角扩散膜片及显示面板
CN115685618B (zh) * 2022-11-09 2023-09-26 Tcl华星光电技术有限公司 一种显示面板及其制备方法

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
JPH0990338A (ja) * 1995-07-17 1997-04-04 Toray Ind Inc 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 (6)

* 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
JP2947350B2 (ja) * 1997-06-12 1999-09-13 富士通株式会社 液晶表示装置
JP4127517B2 (ja) * 2003-03-25 2008-07-30 大日本印刷株式会社 拡散シートおよび透過型スクリーン
KR100788524B1 (ko) * 2003-03-25 2007-12-24 다이니폰 인사츠 가부시키가이샤 확산시트, 이를 갖춘 투과형 스크린, 확산시트용 성형틀의제작방법 및 확산시트의 제조방법
US20100245737A1 (en) * 2007-10-03 2010-09-30 Iori Aoyama Light diffusion sheet and liquid crystal display device

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
JPH0990338A (ja) * 1995-07-17 1997-04-04 Toray Ind Inc 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 (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10067379B2 (en) 2012-04-02 2018-09-04 Sharp Kabushiki Kaisha Liquid crystal display device
US9709841B2 (en) 2012-08-10 2017-07-18 Sharp Kabushiki Kaisha Liquid crystal display device
WO2014084261A1 (ja) * 2012-11-30 2014-06-05 シャープ株式会社 光制御フィルム及び表示装置

Also Published As

Publication number Publication date
CN101815965B (zh) 2012-01-25
CN101815965A (zh) 2010-08-25
US20100245736A1 (en) 2010-09-30

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