TW200717108A - Optical diffusion film and the face light source using it - Google Patents

Optical diffusion film and the face light source using it

Info

Publication number
TW200717108A
TW200717108A TW095132646A TW95132646A TW200717108A TW 200717108 A TW200717108 A TW 200717108A TW 095132646 A TW095132646 A TW 095132646A TW 95132646 A TW95132646 A TW 95132646A TW 200717108 A TW200717108 A TW 200717108A
Authority
TW
Taiwan
Prior art keywords
optical diffusion
diffusion film
light source
face light
asmax
Prior art date
Application number
TW095132646A
Other languages
Chinese (zh)
Inventor
Akikazu Kikuchi
Hiromitsu Takahashi
Kozo Takahashi
Takayuki Kaneko
Original Assignee
Toray Industries
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 Toray Industries filed Critical Toray Industries
Publication of TW200717108A publication Critical patent/TW200717108A/en

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
    • G02B5/0205—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
    • 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
    • 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
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0268—Diffusing elements; Afocal elements characterized by the fabrication or manufacturing method
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/10—Fibres of continuous length
    • B32B2305/18—Fabrics, textiles

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mathematical Physics (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Liquid Crystal (AREA)
  • Laminated Bodies (AREA)

Abstract

This invention provides a material film containing internal optical diffusion element, and at least one surface forms a rough-surface optical diffusion film that the average aspect ratio of Asmax and Asmin:Asmax/Asmin (anisotropy) is more than 1.1. The present invention can provide an optical diffusion film excellent at even and high luminance.
TW095132646A 2005-09-06 2006-09-05 Optical diffusion film and the face light source using it TW200717108A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2005257453 2005-09-06
JP2005302717 2005-10-18
JP2005333696 2005-11-18

Publications (1)

Publication Number Publication Date
TW200717108A true TW200717108A (en) 2007-05-01

Family

ID=37835725

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095132646A TW200717108A (en) 2005-09-06 2006-09-05 Optical diffusion film and the face light source using it

Country Status (3)

Country Link
KR (1) KR20080042882A (en)
TW (1) TW200717108A (en)
WO (1) WO2007029606A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5394619B2 (en) * 2007-07-04 2014-01-22 丸善石油化学株式会社 Thermal imprint method
WO2010126188A1 (en) * 2009-04-29 2010-11-04 도레이새한 주식회사 Light diffusing plate for lcd backlight unit
CN102692207B (en) * 2011-03-25 2014-07-30 财团法人工业技术研究院 Measuring method and measuring device
DE102017003361B4 (en) * 2017-04-06 2021-09-30 Carl Freudenberg Kg Element for light manipulation

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3491467B2 (en) * 1996-10-25 2004-01-26 松下電工株式会社 Light diffusion plate and method of manufacturing the same
JP3968155B2 (en) * 1997-09-17 2007-08-29 大日本印刷株式会社 Prism sheet
JP4101339B2 (en) * 1997-09-25 2008-06-18 大日本印刷株式会社 Light diffusing film, manufacturing method thereof, polarizing plate with diffusing layer, and liquid crystal display device
JP3931408B2 (en) * 1997-12-25 2007-06-13 凸版印刷株式会社 Anti-glare hard coat film
JP3526810B2 (en) * 2000-04-28 2004-05-17 小松精練株式会社 Reflective material and method of manufacturing the same
JP2002107510A (en) * 2000-09-27 2002-04-10 Keiwa Inc Anistropic diffusion sheet and backlight unit using the same
JP2004004417A (en) * 2002-04-18 2004-01-08 Nitto Denko Corp Light diffusion sheet, optical device and image display device
JP2004087234A (en) * 2002-08-26 2004-03-18 Daicel Chem Ind Ltd Surface light source unit and transmission type display device using the same
JP2004341244A (en) * 2003-05-15 2004-12-02 Sony Corp Light diffusion film and method for manufacturing the same

Also Published As

Publication number Publication date
WO2007029606A1 (en) 2007-03-15
KR20080042882A (en) 2008-05-15

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