WO2009091154A3 - Light diffusion film - Google Patents

Light diffusion film Download PDF

Info

Publication number
WO2009091154A3
WO2009091154A3 PCT/KR2008/007887 KR2008007887W WO2009091154A3 WO 2009091154 A3 WO2009091154 A3 WO 2009091154A3 KR 2008007887 W KR2008007887 W KR 2008007887W WO 2009091154 A3 WO2009091154 A3 WO 2009091154A3
Authority
WO
WIPO (PCT)
Prior art keywords
diffusion film
light diffusion
polycondensate
stretching
preparing
Prior art date
Application number
PCT/KR2008/007887
Other languages
French (fr)
Other versions
WO2009091154A2 (en
Inventor
Sang-Hyun Baek
Original Assignee
Kolon Industries, Inc.
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
Priority claimed from KR1020070141615A external-priority patent/KR101052358B1/en
Priority claimed from KR1020070141599A external-priority patent/KR101051147B1/en
Priority claimed from KR1020070141688A external-priority patent/KR101086696B1/en
Application filed by Kolon Industries, Inc. filed Critical Kolon Industries, Inc.
Publication of WO2009091154A2 publication Critical patent/WO2009091154A2/en
Publication of WO2009091154A3 publication Critical patent/WO2009091154A3/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
    • G02B5/0273—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
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members

Abstract

The present invention relates to a light diffusion film used in various displays and a method for preparing the same, more specifically, a method for preparing a light diffusion film having a haze of 30 to 90% and a total light transmittance of 70 to 97%, comprising: transesterif icating an acid component with a glycol component and mixing diffusion particles therewith; obtaining a polycondensate by performing polycondensation; uniaxially stretching the polycondensate in a longitudinal direction (Machine direction; MD) by extrusion; and stretching the polycondensate uniaxially in a transverse direction (TD) or biaxially in transverse and longitudinal directions (Machine direction; MD) after the stretching.
PCT/KR2008/007887 2007-12-31 2008-12-31 Light diffusion film WO2009091154A2 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
KR1020070141615A KR101052358B1 (en) 2007-12-31 2007-12-31 Manufacturing Method of Light Diffusion Film
KR1020070141599A KR101051147B1 (en) 2007-12-31 2007-12-31 Light Diffusion Film
KR1020070141688A KR101086696B1 (en) 2007-12-31 2007-12-31 Diffusion film
KR10-2007-0141688 2007-12-31
KR10-2007-0141599 2007-12-31
KR10-2007-0141615 2007-12-31

Publications (2)

Publication Number Publication Date
WO2009091154A2 WO2009091154A2 (en) 2009-07-23
WO2009091154A3 true WO2009091154A3 (en) 2009-10-22

Family

ID=40885779

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2008/007887 WO2009091154A2 (en) 2007-12-31 2008-12-31 Light diffusion film

Country Status (1)

Country Link
WO (1) WO2009091154A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103665690B (en) * 2012-08-31 2016-03-16 积水化成品工业株式会社 Light diffusion body
CN104877288B (en) * 2014-02-27 2017-09-29 积水化成品工业株式会社 Light diffusion body
KR101768270B1 (en) * 2014-07-21 2017-08-16 삼성에스디아이 주식회사 Polarizing plate and liquid crystal display apparatus comprising the same
WO2016095189A1 (en) * 2014-12-19 2016-06-23 Rhodia Operations Water based composition comprising light diffusion particles and a polyurethane resin
CN105601831B (en) * 2016-03-18 2017-10-20 浙江精通科技股份有限公司 A kind of preparation method of amino modified acrylic resin complex microsphere
CN108467507B (en) * 2018-04-16 2021-08-10 张家港康得新光电材料有限公司 Matte film, preparation method thereof and haze adjusting method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0659108A (en) * 1991-07-25 1994-03-04 Tsujimoto Denki Seisakusho:Kk Highly light diffusive film
KR20060112120A (en) * 2005-04-26 2006-10-31 주식회사 코오롱 Light-diffusion plate
KR20070056920A (en) * 2006-08-02 2007-06-04 주식회사 카노텍 Diffusion protecting film and method for preparing the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0659108A (en) * 1991-07-25 1994-03-04 Tsujimoto Denki Seisakusho:Kk Highly light diffusive film
KR20060112120A (en) * 2005-04-26 2006-10-31 주식회사 코오롱 Light-diffusion plate
KR20070056920A (en) * 2006-08-02 2007-06-04 주식회사 카노텍 Diffusion protecting film and method for preparing the same

Also Published As

Publication number Publication date
WO2009091154A2 (en) 2009-07-23

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