WO2009054446A1 - 拡散シート - Google Patents

拡散シート Download PDF

Info

Publication number
WO2009054446A1
WO2009054446A1 PCT/JP2008/069216 JP2008069216W WO2009054446A1 WO 2009054446 A1 WO2009054446 A1 WO 2009054446A1 JP 2008069216 W JP2008069216 W JP 2008069216W WO 2009054446 A1 WO2009054446 A1 WO 2009054446A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
diffusion sheet
projection
region
projection surface
Prior art date
Application number
PCT/JP2008/069216
Other languages
English (en)
French (fr)
Inventor
Takayuki Kuroda
Yutaka Koike
Takaaki Saeki
Tatsuo Tanaka
Kotaro Oda
Original Assignee
Asahi Kasei 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 Asahi Kasei Kabushiki Kaisha filed Critical Asahi Kasei Kabushiki Kaisha
Priority to JP2009538247A priority Critical patent/JPWO2009054446A1/ja
Publication of WO2009054446A1 publication Critical patent/WO2009054446A1/ja

Links

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
    • G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
    • G02B5/0221—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having an irregular structure
    • 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
    • G02F1/133611—Direct backlight including means for improving the brightness uniformity

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)
  • Planar Illumination Modules (AREA)

Abstract

　本発明の拡散シートは、光源の上方に配設され、前記光源からの光を入光する入光面と前記光を出光する出光面とを有する拡散シートであって、前記入光面又は前記出光面に、曲面形状を有する凹凸部が多数連続して配列された凹凸構造を有し、前記拡散シートの平面視における前記光源の投影領域を含む出光面の第一領域から出光される光の拡散角度が、前記拡散シートの平面視における前記光源の間の投影領域を含む出光面の第二領域から出光される光の拡散角度より低いことを特徴とする。
PCT/JP2008/069216 2007-10-23 2008-10-23 拡散シート WO2009054446A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009538247A JPWO2009054446A1 (ja) 2007-10-23 2008-10-23 拡散シート

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2007-275827 2007-10-23
JP2007275827 2007-10-23
JP2008-066663 2008-03-14
JP2008066663 2008-03-14

Publications (1)

Publication Number Publication Date
WO2009054446A1 true WO2009054446A1 (ja) 2009-04-30

Family

ID=40579548

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/069216 WO2009054446A1 (ja) 2007-10-23 2008-10-23 拡散シート

Country Status (3)

Country Link
JP (1) JPWO2009054446A1 (ja)
TW (1) TW200925730A (ja)
WO (1) WO2009054446A1 (ja)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010250302A (ja) * 2009-03-25 2010-11-04 Asahi Kasei Corp 光線制御ユニット
JP2011022266A (ja) * 2009-07-14 2011-02-03 Asahi Kasei Corp 拡散シート
JP2011022265A (ja) * 2009-07-14 2011-02-03 Asahi Kasei Corp 拡散シート
JP2011081366A (ja) * 2009-09-09 2011-04-21 Asahi Kasei Corp 拡散シート、光源ユニット、及び液晶表示装置
JP2011128453A (ja) * 2009-12-18 2011-06-30 Takiron Co Ltd 光学シート及びこれを用いたバックライトユニット
JP2011248052A (ja) * 2010-05-26 2011-12-08 Mitsubishi Gas Chemical Co Inc 光拡散シートおよびそれを用いたｌｅｄ光源の照明装置
JP2012027423A (ja) * 2010-07-28 2012-02-09 Toppan Printing Co Ltd 光学シート、光学シート積層体、バックライトユニット及びディスプレイ装置
JP2015537360A (ja) * 2013-10-24 2015-12-24 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． ２つ以上のマイクロ構造化されたフィルムを有する光学構造
TWI566008B (zh) * 2013-01-17 2017-01-11 鴻海精密工業股份有限公司 擴散片及背光模組
EP3373049A1 (en) * 2017-03-09 2018-09-12 Panasonic Intellectual Property Management Co., Ltd. Projection light source device
JP2019511840A (ja) * 2016-03-16 2019-04-25 ルミレッズ ホールディング ベーフェー Ｌｅｄモジュールを製造する方法
EP3561553A1 (en) * 2018-04-25 2019-10-30 Koninklijke Philips N.V. Laser arrangement with reduced scattering loss

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000149633A (ja) * 1998-11-05 2000-05-30 Nippon Chemitec Kk 直下型バックライト用シート及びこれを用いた面発光装置
JP2005107020A (ja) * 2003-09-29 2005-04-21 Sony Corp バックライトおよび拡散板の製造方法、並びに、液晶表示装置
JP2007178705A (ja) * 2005-12-28 2007-07-12 Takiron Co Ltd 光拡散シート
JP2007264393A (ja) * 2006-03-29 2007-10-11 Sony Corp 液晶表示装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000149633A (ja) * 1998-11-05 2000-05-30 Nippon Chemitec Kk 直下型バックライト用シート及びこれを用いた面発光装置
JP2005107020A (ja) * 2003-09-29 2005-04-21 Sony Corp バックライトおよび拡散板の製造方法、並びに、液晶表示装置
JP2007178705A (ja) * 2005-12-28 2007-07-12 Takiron Co Ltd 光拡散シート
JP2007264393A (ja) * 2006-03-29 2007-10-11 Sony Corp 液晶表示装置

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010250302A (ja) * 2009-03-25 2010-11-04 Asahi Kasei Corp 光線制御ユニット
JP2011022266A (ja) * 2009-07-14 2011-02-03 Asahi Kasei Corp 拡散シート
JP2011022265A (ja) * 2009-07-14 2011-02-03 Asahi Kasei Corp 拡散シート
JP2011081366A (ja) * 2009-09-09 2011-04-21 Asahi Kasei Corp 拡散シート、光源ユニット、及び液晶表示装置
JP2011128453A (ja) * 2009-12-18 2011-06-30 Takiron Co Ltd 光学シート及びこれを用いたバックライトユニット
JP2011248052A (ja) * 2010-05-26 2011-12-08 Mitsubishi Gas Chemical Co Inc 光拡散シートおよびそれを用いたｌｅｄ光源の照明装置
JP2012027423A (ja) * 2010-07-28 2012-02-09 Toppan Printing Co Ltd 光学シート、光学シート積層体、バックライトユニット及びディスプレイ装置
TWI566008B (zh) * 2013-01-17 2017-01-11 鴻海精密工業股份有限公司 擴散片及背光模組
JP2015537360A (ja) * 2013-10-24 2015-12-24 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． ２つ以上のマイクロ構造化されたフィルムを有する光学構造
JP2019511840A (ja) * 2016-03-16 2019-04-25 ルミレッズ ホールディング ベーフェー Ｌｅｄモジュールを製造する方法
EP3373049A1 (en) * 2017-03-09 2018-09-12 Panasonic Intellectual Property Management Co., Ltd. Projection light source device
US10185211B2 (en) 2017-03-09 2019-01-22 Panasonic Intellectual Property Management, Co., Ltd. Projection light source device
EP3561553A1 (en) * 2018-04-25 2019-10-30 Koninklijke Philips N.V. Laser arrangement with reduced scattering loss

Also Published As

Publication number Publication date
JPWO2009054446A1 (ja) 2011-03-03
TW200925730A (en) 2009-06-16

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