WO2010044619A3 - 확산비드가 구비된 광학소자, 이를 갖는 백라이트 유닛 및 액정표시장치 - Google Patents

확산비드가 구비된 광학소자, 이를 갖는 백라이트 유닛 및 액정표시장치 Download PDF

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Publication number
WO2010044619A3
WO2010044619A3 PCT/KR2009/005936 KR2009005936W WO2010044619A3 WO 2010044619 A3 WO2010044619 A3 WO 2010044619A3 KR 2009005936 W KR2009005936 W KR 2009005936W WO 2010044619 A3 WO2010044619 A3 WO 2010044619A3
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WO
WIPO (PCT)
Prior art keywords
backlight unit
optical element
diffusion bead
liquid crystal
crystal display
Prior art date
Application number
PCT/KR2009/005936
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English (en)
French (fr)
Other versions
WO2010044619A2 (ko
Inventor
안정애
서영남
장혜진
김도윤
안준원
Original Assignee
주식회사 엘엠에스
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 주식회사 엘엠에스 filed Critical 주식회사 엘엠에스
Publication of WO2010044619A2 publication Critical patent/WO2010044619A2/ko
Publication of WO2010044619A3 publication Critical patent/WO2010044619A3/ko

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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
    • G02B5/0205—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
    • 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
    • G02B5/0215—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 a regular 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
    • G02B5/021—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
    • G02B5/04—Prisms
    • G02B5/045—Prism arrays
    • 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
    • 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
    • G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, 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
    • 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
    • B32B2305/30—Fillers, e.g. particles, powders, beads, flakes, spheres, chips
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements

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)

Abstract

본 발명은 백라이트 유닛에 사용되는 광학소자에 관한 것이다. 이러한 본 발명은, 광 투과성을 갖는 베이스필름; 상기 베이스필름의 일면에 구비되어 입사광을 집광시키도록 복수개의 산과 골이 연속적으로 형성된 미세광학패턴; 상기 미세광학패턴에 적층되는 다른 광학소자와의 마찰로 인한 산 갈림을 방지하면서 굴절률 차이에 의해 입사광을 굴절시켜서 수직으로 출사하도록, 내부물질 및 이 내부물질을 감싸는 외부물질로 이루어져 미세광학패턴의 골에 도포되는 적어도 하나의 확산비드;를 포함한다. 따라서, 본 발명은 확산비드와 수지의 굴절률 차이에 의해 휘도를 적절히 유지하면서 다른 광학소자와의 마찰로 인한 산 갈림을 차단하여 웨트아웃 현상을 미연에 방지할 수 있는 장점이 있다.
PCT/KR2009/005936 2008-10-15 2009-10-15 확산비드가 구비된 광학소자, 이를 갖는 백라이트 유닛 및 액정표시장치 WO2010044619A2 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020080101049A KR101009709B1 (ko) 2008-10-15 2008-10-15 확산비드가 구비된 광학소자, 이를 갖는 백라이트 유닛 및 액정표시장치
KR10-2008-0101049 2008-10-15

Publications (2)

Publication Number Publication Date
WO2010044619A2 WO2010044619A2 (ko) 2010-04-22
WO2010044619A3 true WO2010044619A3 (ko) 2010-07-29

Family

ID=42107064

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2009/005936 WO2010044619A2 (ko) 2008-10-15 2009-10-15 확산비드가 구비된 광학소자, 이를 갖는 백라이트 유닛 및 액정표시장치

Country Status (2)

Country Link
KR (1) KR101009709B1 (ko)
WO (1) WO2010044619A2 (ko)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102508208B1 (ko) 2017-10-16 2023-03-09 삼성전자주식회사 디스플레이 장치
US11327205B2 (en) 2019-07-29 2022-05-10 Viavi Solutions Inc. Encapsulated diffuser

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1096804A (ja) * 1996-09-20 1998-04-14 Keiwa Shoko Kk 光拡散シート
KR20070028827A (ko) * 2005-09-08 2007-03-13 삼성전자주식회사 도광판, 이를 갖는 백라이트 어셈블리 및 표시 장치
KR100793091B1 (ko) * 2006-11-24 2008-01-10 엘지전자 주식회사 휘도 향상 시트 및 이를 포함하는 백라이트 장치

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100895335B1 (ko) * 2007-04-13 2009-05-07 주식회사 상보 광확산제를 이용한 광학 적층 필름

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1096804A (ja) * 1996-09-20 1998-04-14 Keiwa Shoko Kk 光拡散シート
KR20070028827A (ko) * 2005-09-08 2007-03-13 삼성전자주식회사 도광판, 이를 갖는 백라이트 어셈블리 및 표시 장치
KR100793091B1 (ko) * 2006-11-24 2008-01-10 엘지전자 주식회사 휘도 향상 시트 및 이를 포함하는 백라이트 장치

Also Published As

Publication number Publication date
KR20100041974A (ko) 2010-04-23
KR101009709B1 (ko) 2011-01-19
WO2010044619A2 (ko) 2010-04-22

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