WO2008123458A1 - 異方性拡散板及びそれを備えたバックライトユニット - Google Patents

異方性拡散板及びそれを備えたバックライトユニット Download PDF

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Publication number
WO2008123458A1
WO2008123458A1 PCT/JP2008/056208 JP2008056208W WO2008123458A1 WO 2008123458 A1 WO2008123458 A1 WO 2008123458A1 JP 2008056208 W JP2008056208 W JP 2008056208W WO 2008123458 A1 WO2008123458 A1 WO 2008123458A1
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WO
WIPO (PCT)
Prior art keywords
thetav
diffusion
particle
scattering
phase
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.)
Ceased
Application number
PCT/JP2008/056208
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English (en)
French (fr)
Inventor
Toshihiro Terauchi
Satoshi Suda
Masanori Hiraishi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daicel Corp
Original Assignee
Daicel Chemical Industries 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 Daicel Chemical Industries Ltd filed Critical Daicel Chemical Industries Ltd
Publication of WO2008123458A1 publication Critical patent/WO2008123458A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
    • 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
    • G02F1/133602—Direct backlight
    • G02F1/133604—Direct backlight with lamps
    • 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
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

Abstract

　管状光源（蛍光灯など）を視認できず、表示ユニットからの輝度を均一化できる直下型バックライトとそのための光拡散板を提供する。 　直下型バックライトユニットを構成する異方性拡散板２４は、表示ユニット１と、この表示ユニットを裏面から照光するための複数の管状光源２２との間に配設される。異方性拡散板は、互いに屈折率が異なる連続相Ｃと粒子状分散相Ｄとを有し、粒子状分散相Ｄの平均アスペクト比が１より大きく、粒子状分散相Ｄの長軸方向が一方の方向に配向した異方性散乱層で構成され、散乱角θと散乱光強度Ｆとの関係を示す散乱特性Ｆ（θ）において、粒子状分散相の長軸方向での光散乱特性をＦｘ（θ）、粒子状分散相の長軸方向に対して直交する方向の散乱特性をＦｙ（θ）としたとき、散乱角θ＝１８°での異方度Ｆ１８（Ｆｙ（１８°）／Ｆｘ（１８°））＞２であり、ヘーズ値が９５％以上、厚みが０．５～５ｍｍである。
PCT/JP2008/056208 2007-04-03 2008-03-28 異方性拡散板及びそれを備えたバックライトユニット Ceased WO2008123458A1 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-097078 2007-04-03
JP2007097078A JP2008256814A (ja) 2007-04-03 2007-04-03 異方性拡散板及びそれを備えたバックライトユニット

Publications (1)

Publication Number Publication Date
WO2008123458A1 true WO2008123458A1 (ja) 2008-10-16

Family

ID=39830943

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/056208 Ceased WO2008123458A1 (ja) 2007-04-03 2008-03-28 異方性拡散板及びそれを備えたバックライトユニット

Country Status (3)

Country Link
JP (1) JP2008256814A (ja)
TW (1) TW200903036A (ja)
WO (1) WO2008123458A1 (ja)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010101065A1 (ja) * 2009-03-02 2010-09-10 東洋紡績株式会社 光拡散フィルム、その積層シート及びその製造方法
JP2011107688A (ja) * 2009-10-22 2011-06-02 Toyobo Co Ltd 液晶表示装置用視野角向上フィルム、視野角向上機能付保護フィルム、及び液晶表示装置
JP2011107694A (ja) * 2009-10-22 2011-06-02 Toyobo Co Ltd 液晶表示装置用視野角向上フィルム、視野角向上機能付保護フィルム及び液晶表示装置
JP2011108580A (ja) * 2009-11-20 2011-06-02 Toyobo Co Ltd バックライト装置用光拡散フィルム及び積層シート並びにそれを用いたバックライト装置
JP2011107597A (ja) * 2009-11-20 2011-06-02 Toyobo Co Ltd バックライト装置用光拡散フィルム及び積層シート並びにそれを用いたバックライト装置
JP2011150303A (ja) * 2009-12-10 2011-08-04 Toyobo Co Ltd 光拡散フィルム及びそれを組み込んだバックライト装置

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5645487B2 (ja) * 2010-02-01 2014-12-24 日本カーバイド工業株式会社 光拡散シート、光拡散シートを用いた照明装置、及び表示装置
JP2013109332A (ja) * 2011-10-24 2013-06-06 Fujifilm Corp 液晶表示装置
JP2013109334A (ja) * 2011-10-25 2013-06-06 Fujifilm Corp 液晶表示装置
WO2013061971A1 (ja) * 2011-10-25 2013-05-02 富士フイルム株式会社 液晶表示装置
JP5879278B2 (ja) * 2012-01-30 2016-03-08 富士フイルム株式会社 液晶表示装置
JP5879277B2 (ja) * 2012-01-30 2016-03-08 富士フイルム株式会社 液晶表示装置
JP6160421B2 (ja) * 2013-10-03 2017-07-12 日本ポリプロ株式会社 ポリオレフィン系樹脂組成物及びその成形体
KR102227691B1 (ko) * 2014-09-30 2021-03-12 엘지디스플레이 주식회사 액정 표시 장치
JP7286269B2 (ja) * 2018-03-23 2023-06-05 恵和株式会社 バックライトユニット
JP7815689B2 (ja) * 2021-10-29 2026-02-18 大日本印刷株式会社 加飾部材、加飾組合体および表示システム

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07114013A (ja) * 1993-10-15 1995-05-02 Sumitomo Chem Co Ltd 液晶表示装置
JP2003050306A (ja) * 2001-06-01 2003-02-21 Daicel Chem Ind Ltd 異方性拡散フィルム
JP2003090906A (ja) * 2001-09-18 2003-03-28 Daicel Chem Ind Ltd 異方性拡散フィルム及びそれを用いた装置
WO2003034103A1 (fr) * 2001-10-12 2003-04-24 Daicel Chemical Industries, Ltd. Feuille de dosage de la lumiere et procede de fabrication de cette feuille
JP2003335956A (ja) * 2002-05-21 2003-11-28 Kuraray Co Ltd 光拡散性樹脂組成物
JP2003344613A (ja) * 2002-05-30 2003-12-03 Toray Ind Inc 面光源用光拡散性フィルムおよび面光源
JP2004143261A (ja) * 2002-10-23 2004-05-20 Kuraray Co Ltd 光拡散性樹脂組成物
JP2006024519A (ja) * 2004-07-09 2006-01-26 Nitto Denko Corp 直下型バックライトおよび液晶表示装置
JP2006078737A (ja) * 2004-09-09 2006-03-23 Dainippon Printing Co Ltd 面光源装置
JP2008021527A (ja) * 2006-07-12 2008-01-31 Daicel Chem Ind Ltd 面状光源装置

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07114013A (ja) * 1993-10-15 1995-05-02 Sumitomo Chem Co Ltd 液晶表示装置
JP2003050306A (ja) * 2001-06-01 2003-02-21 Daicel Chem Ind Ltd 異方性拡散フィルム
JP2003090906A (ja) * 2001-09-18 2003-03-28 Daicel Chem Ind Ltd 異方性拡散フィルム及びそれを用いた装置
WO2003034103A1 (fr) * 2001-10-12 2003-04-24 Daicel Chemical Industries, Ltd. Feuille de dosage de la lumiere et procede de fabrication de cette feuille
JP2003335956A (ja) * 2002-05-21 2003-11-28 Kuraray Co Ltd 光拡散性樹脂組成物
JP2003344613A (ja) * 2002-05-30 2003-12-03 Toray Ind Inc 面光源用光拡散性フィルムおよび面光源
JP2004143261A (ja) * 2002-10-23 2004-05-20 Kuraray Co Ltd 光拡散性樹脂組成物
JP2006024519A (ja) * 2004-07-09 2006-01-26 Nitto Denko Corp 直下型バックライトおよび液晶表示装置
JP2006078737A (ja) * 2004-09-09 2006-03-23 Dainippon Printing Co Ltd 面光源装置
JP2008021527A (ja) * 2006-07-12 2008-01-31 Daicel Chem Ind Ltd 面状光源装置

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010101065A1 (ja) * 2009-03-02 2010-09-10 東洋紡績株式会社 光拡散フィルム、その積層シート及びその製造方法
JP5252071B2 (ja) * 2009-03-02 2013-07-31 東洋紡株式会社 光拡散フィルム、その積層シート及びその製造方法
JP2011107688A (ja) * 2009-10-22 2011-06-02 Toyobo Co Ltd 液晶表示装置用視野角向上フィルム、視野角向上機能付保護フィルム、及び液晶表示装置
JP2011107694A (ja) * 2009-10-22 2011-06-02 Toyobo Co Ltd 液晶表示装置用視野角向上フィルム、視野角向上機能付保護フィルム及び液晶表示装置
JP2011108580A (ja) * 2009-11-20 2011-06-02 Toyobo Co Ltd バックライト装置用光拡散フィルム及び積層シート並びにそれを用いたバックライト装置
JP2011107597A (ja) * 2009-11-20 2011-06-02 Toyobo Co Ltd バックライト装置用光拡散フィルム及び積層シート並びにそれを用いたバックライト装置
JP2011150303A (ja) * 2009-12-10 2011-08-04 Toyobo Co Ltd 光拡散フィルム及びそれを組み込んだバックライト装置

Also Published As

Publication number Publication date
TW200903036A (en) 2009-01-16
JP2008256814A (ja) 2008-10-23

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