TWI343870B - High brightness light diffusion sheet for backlight unit of liquid crystal display and method for manufacturing the same - Google Patents

High brightness light diffusion sheet for backlight unit of liquid crystal display and method for manufacturing the same Download PDF

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Publication number
TWI343870B
TWI343870B TW095143628A TW95143628A TWI343870B TW I343870 B TWI343870 B TW I343870B TW 095143628 A TW095143628 A TW 095143628A TW 95143628 A TW95143628 A TW 95143628A TW I343870 B TWI343870 B TW I343870B
Authority
TW
Taiwan
Prior art keywords
light
diffusing
particles
plate
solvent
Prior art date
Application number
TW095143628A
Other languages
English (en)
Chinese (zh)
Other versions
TW200742669A (en
Inventor
Kwang-Won Kim
Hong-Soo Lee
Jin-Woo Lee
Ji-Seon Song
Yong-Jun Choi
Kyong-Ah Byun
Original Assignee
Sangbo Corp
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 Sangbo Corp filed Critical Sangbo Corp
Publication of TW200742669A publication Critical patent/TW200742669A/zh
Application granted granted Critical
Publication of TWI343870B publication Critical patent/TWI343870B/zh

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
    • G02B5/021—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
    • G02B5/0226—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 having particles on the surface
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L101/00—Compositions of unspecified macromolecular compounds
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • 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
    • G02B5/0231—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 microprismatic or micropyramidal shape
    • 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
    • G02B5/0273—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
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0051—Diffusing sheet or layer
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2300/00—Characterised by the use of unspecified polymers
TW095143628A 2006-05-10 2006-11-24 High brightness light diffusion sheet for backlight unit of liquid crystal display and method for manufacturing the same TWI343870B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020060042044A KR100744842B1 (ko) 2006-05-10 2006-05-10 액정 디스플레이의 백라이트 유니트용 고휘도 광확산 시트및 그 제조방법

Publications (2)

Publication Number Publication Date
TW200742669A TW200742669A (en) 2007-11-16
TWI343870B true TWI343870B (en) 2011-06-21

Family

ID=38601549

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095143628A TWI343870B (en) 2006-05-10 2006-11-24 High brightness light diffusion sheet for backlight unit of liquid crystal display and method for manufacturing the same

Country Status (3)

Country Link
KR (1) KR100744842B1 (ko)
CN (1) CN100460953C (ko)
TW (1) TWI343870B (ko)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8882327B2 (en) * 2012-09-28 2014-11-11 Skc Haas Display Films Co., Ltd. Composite light guide plate
JP7383448B2 (ja) * 2019-10-18 2023-11-20 リンテック株式会社 粘着剤、粘着シート、バックライトユニットおよび表示装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002072900A (ja) * 2000-08-31 2002-03-12 Kimoto & Co Ltd バックライトユニット
JP5054872B2 (ja) * 2001-02-22 2012-10-24 恵和株式会社 光拡散シート及びこれを用いたバックライトユニット
US6908202B2 (en) * 2002-10-03 2005-06-21 General Electric Company Bulk diffuser for flat panel display
JP2004198707A (ja) 2002-12-18 2004-07-15 Keiwa Inc 光学シート及びこれを用いたバックライトユニット
JP2004226604A (ja) * 2003-01-22 2004-08-12 Sekisui Plastics Co Ltd 合成樹脂粒子、光拡散板、液晶表示装置用バックライトユニット及び液晶表示装置
US7314652B2 (en) * 2003-02-28 2008-01-01 General Electric Company Diffuser for flat panel display
JP4074847B2 (ja) 2003-09-30 2008-04-16 恵和株式会社 光学シート及びこれを用いたバックライトユニット
JP2005326774A (ja) * 2004-05-17 2005-11-24 Soken Chem & Eng Co Ltd 光拡散シートおよびこれに用いる樹脂組成物
KR20060016518A (ko) * 2004-08-18 2006-02-22 삼성전자주식회사 표시장치
JP4029299B2 (ja) * 2004-09-06 2008-01-09 日本ゼオン株式会社 光拡散性樹脂組成物、及び光拡散成形品
JP2005107553A (ja) 2005-01-06 2005-04-21 Minoru Yoshida 光拡散シート及びこれを用いたバックライトユニット

Also Published As

Publication number Publication date
CN101071222A (zh) 2007-11-14
KR100744842B1 (ko) 2007-08-01
TW200742669A (en) 2007-11-16
CN100460953C (zh) 2009-02-11

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