TWI367354B - Light guide panel for lcd back light unit and lcd back light unit thereby - Google Patents

Light guide panel for lcd back light unit and lcd back light unit thereby

Info

Publication number
TWI367354B
TWI367354B TW096145056A TW96145056A TWI367354B TW I367354 B TWI367354 B TW I367354B TW 096145056 A TW096145056 A TW 096145056A TW 96145056 A TW96145056 A TW 96145056A TW I367354 B TWI367354 B TW I367354B
Authority
TW
Taiwan
Prior art keywords
lcd back
light unit
back light
guide panel
unit
Prior art date
Application number
TW096145056A
Other languages
Chinese (zh)
Other versions
TW200918973A (en
Inventor
O Yong Jeong
Seong Hoon Lee
Man Suk Kim
Original Assignee
Cheil Ind 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
Application filed by Cheil Ind Inc filed Critical Cheil Ind Inc
Publication of TW200918973A publication Critical patent/TW200918973A/en
Application granted granted Critical
Publication of TWI367354B publication Critical patent/TWI367354B/en

Links

Classifications

    • 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
    • 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
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • 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
    • G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
    • G02B6/0061—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to provide homogeneous light output intensity
    • 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
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
    • 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
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0045—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide
    • G02B6/0046—Tapered light guide, e.g. wedge-shaped light guide

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)
  • Planar Illumination Modules (AREA)
  • Optical Elements Other Than Lenses (AREA)
TW096145056A 2007-10-30 2007-11-26 Light guide panel for lcd back light unit and lcd back light unit thereby TWI367354B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070109793A KR100932304B1 (en) 2007-10-30 2007-10-30 Light guide plate for backlight unit having an asymmetric prism on the back and liquid crystal display using the same

Publications (2)

Publication Number Publication Date
TW200918973A TW200918973A (en) 2009-05-01
TWI367354B true TWI367354B (en) 2012-07-01

Family

ID=40591211

Family Applications (1)

Application Number Title Priority Date Filing Date
TW096145056A TWI367354B (en) 2007-10-30 2007-11-26 Light guide panel for lcd back light unit and lcd back light unit thereby

Country Status (4)

Country Link
KR (1) KR100932304B1 (en)
CN (1) CN101842738B (en)
TW (1) TWI367354B (en)
WO (1) WO2009057844A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9575238B2 (en) 2014-05-05 2017-02-21 Au Optronics Corporation Back light module

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2313800A4 (en) 2008-07-10 2014-03-19 3M Innovative Properties Co Viscoelastic lightguide
EP2321677A4 (en) 2008-08-08 2011-08-17 3M Innovative Properties Co Lightguide having a viscoelastic layer for managing light
KR101285635B1 (en) * 2009-07-30 2013-07-12 엘지디스플레이 주식회사 Light guide plate and liquid crystal display device module including the same
KR101047754B1 (en) * 2009-08-21 2011-07-07 희성전자 주식회사 Side Dimming Backlight Unit
KR101054385B1 (en) * 2009-11-19 2011-08-04 주식회사 엘엠에스 Light guide plate and backlight unit having same
KR20120115568A (en) 2010-02-10 2012-10-18 쓰리엠 이노베이티브 프로퍼티즈 컴파니 Illumination device having viscoelastic layer
US9519153B2 (en) 2010-11-19 2016-12-13 Reald Inc. Directional flat illuminators
US20140041205A1 (en) 2010-11-19 2014-02-13 Reald Inc. Method of manufacturing directional backlight apparatus and directional structured optical film
US9001423B2 (en) 2012-07-23 2015-04-07 Reald Inc. Temporally multiplexed display with landscape and portrait operation modes
KR101948169B1 (en) 2011-12-23 2019-02-14 엘지디스플레이 주식회사 Backlight unit and liquid crystal display device using the same
US9188731B2 (en) 2012-05-18 2015-11-17 Reald Inc. Directional backlight
US9678267B2 (en) 2012-05-18 2017-06-13 Reald Spark, Llc Wide angle imaging directional backlights
US9235057B2 (en) 2012-05-18 2016-01-12 Reald Inc. Polarization recovery in a directional display device
US9350980B2 (en) 2012-05-18 2016-05-24 Reald Inc. Crosstalk suppression in a directional backlight
CN104380185B (en) 2012-05-18 2017-07-28 瑞尔D斯帕克有限责任公司 Directional backlight
US10062357B2 (en) 2012-05-18 2018-08-28 Reald Spark, Llc Controlling light sources of a directional backlight
WO2013173732A1 (en) 2012-05-18 2013-11-21 Reald Inc. Directionally illuminated waveguide arrangement
CN108089340B (en) 2012-05-18 2021-08-10 瑞尔D斯帕克有限责任公司 Directional display device
CN102853336A (en) * 2012-08-21 2013-01-02 深圳市华星光电技术有限公司 Backlight module
KR101481677B1 (en) 2012-11-30 2015-01-13 엘지디스플레이 주식회사 Back Light Unit and Liquid Crystal Display device Comprising The Same And Fabricating Method thereof
WO2014100753A1 (en) 2012-12-21 2014-06-26 Reald Inc. Superlens component for directional display
CN105324605B (en) * 2013-02-22 2020-04-28 瑞尔D斯帕克有限责任公司 Directional backlight
KR102047229B1 (en) * 2013-05-28 2019-11-21 엘지디스플레이 주식회사 Liquid crystal display device
US9551825B2 (en) 2013-11-15 2017-01-24 Reald Spark, Llc Directional backlights with light emitting element packages
TWI483011B (en) * 2014-03-21 2015-05-01 Univ Nat Taiwan Normal Optical film having microstructure on both sides
CN104776363A (en) * 2015-04-28 2015-07-15 京东方科技集团股份有限公司 Backlight module and display device
US10837622B2 (en) * 2015-08-26 2020-11-17 3M Innovative Properties Company Collimating step-wedge light guide
EP3369034B1 (en) 2015-10-26 2023-07-05 RealD Spark, LLC Intelligent privacy system, apparatus, and method thereof
US10359561B2 (en) 2015-11-13 2019-07-23 Reald Spark, Llc Waveguide comprising surface relief feature and directional backlight, directional display device, and directional display apparatus comprising said waveguide
US10321123B2 (en) 2016-01-05 2019-06-11 Reald Spark, Llc Gaze correction of multi-view images
US11079619B2 (en) 2016-05-19 2021-08-03 Reald Spark, Llc Wide angle imaging directional backlights
CN109496258A (en) 2016-05-23 2019-03-19 瑞尔D斯帕克有限责任公司 Wide-angle image directional backlight
KR102664468B1 (en) * 2017-01-13 2024-05-08 삼성디스플레이 주식회사 Liquid crystal display device
US10740985B2 (en) 2017-08-08 2020-08-11 Reald Spark, Llc Adjusting a digital representation of a head region
TW201921060A (en) 2017-09-15 2019-06-01 美商瑞爾Ｄ斯帕克有限責任公司 Optical stack for switchable directional display
EP3743766A4 (en) 2018-01-25 2021-12-22 RealD Spark, LLC Touch screen for privacy display
US10976578B2 (en) 2018-01-25 2021-04-13 Reald Spark, Llc Reflective optical stack for privacy display
KR20200101722A (en) * 2019-02-20 2020-08-28 코닝 인코포레이티드 Optical structures for light emitting diode device and light emitting diode device for lighting having the same

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002124116A (en) * 2000-08-08 2002-04-26 Yuka Denshi Co Ltd Flat light source device, and a liquid crystal display device using the same
CN100591989C (en) * 2002-11-06 2010-02-24 夏普株式会社 Lighting device and image display unit and light guide provided with it
US7478942B2 (en) * 2003-01-23 2009-01-20 Samsung Electronics Co., Ltd. Light guide plate with light reflection pattern
CN100383639C (en) * 2003-09-06 2008-04-23 鸿富锦精密工业（深圳）有限公司 Back-to-light module
JP4394977B2 (en) * 2004-03-09 2010-01-06 五洋紙工株式会社 Surface light source device
JP2006040710A (en) * 2004-07-27 2006-02-09 Nissen Chemitec Corp Light guide plate and planar lighting system using it
JP4533728B2 (en) * 2004-11-29 2010-09-01 株式会社 日立ディスプレイズ Liquid crystal display
JP2006227408A (en) * 2005-02-18 2006-08-31 Alps Electric Co Ltd Liquid crystal display

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9575238B2 (en) 2014-05-05 2017-02-21 Au Optronics Corporation Back light module

Also Published As

Publication number Publication date
TW200918973A (en) 2009-05-01
WO2009057844A1 (en) 2009-05-07
KR20090043959A (en) 2009-05-07
CN101842738A (en) 2010-09-22
CN101842738B (en) 2012-06-20
KR100932304B1 (en) 2009-12-16

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees