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WO2012030086A3 - Backlight unit - Google Patents

Backlight unit Download PDF

Info

Publication number
WO2012030086A3
WO2012030086A3 PCT/KR2011/006057 KR2011006057W WO2012030086A3 WO 2012030086 A3 WO2012030086 A3 WO 2012030086A3 KR 2011006057 W KR2011006057 W KR 2011006057W WO 2012030086 A3 WO2012030086 A3 WO 2012030086A3
Authority
WO
WIPO (PCT)
Prior art keywords
backlight unit
pcb
guide plate
light guide
emitting devices
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/KR2011/006057
Other languages
French (fr)
Other versions
WO2012030086A2 (en
Inventor
Kyoung Jong Yoo
Kyoung Soo Ahn
Sang Jun Park
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Innotek Co Ltd
Original Assignee
LG Innotek Co Ltd
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 LG Innotek Co Ltd filed Critical LG Innotek Co Ltd
Publication of WO2012030086A2 publication Critical patent/WO2012030086A2/en
Publication of WO2012030086A3 publication Critical patent/WO2012030086A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into 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, e.g. with collimating, focussing or diverging surfaces
    • G02B6/0021—Means for improving the coupling-in of light from the light source into 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, e.g. with collimating, focussing or diverging surfaces for housing at least a part of the light source, e.g. by forming holes or recesses
    • 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
    • G02F1/133603—Direct backlight with LEDs
    • 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
    • G02B6/0055—Reflecting 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
    • G02F1/133611—Direct backlight including means for improving the brightness uniformity

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

Provided is a backlight unit. The backlight unit includes a light guide plate, a plurality of side emitting type light emitting devices, a PCB (printed circuit board), and a reflection plate. The light guide plate includes a plurality of grooves. The side emitting type light emitting devices are inserted in the grooves, respectively. The side emitting type light emitting devices are disposed on the PCB. The reflection plate is disposed between the light guide plate and the PCB.
PCT/KR2011/006057 2010-09-03 2011-08-17 Backlight unit Ceased WO2012030086A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020100086258A KR20120023921A (en) 2010-09-03 2010-09-03 Backlight unit
KR10-2010-0086258 2010-09-03

Publications (2)

Publication Number Publication Date
WO2012030086A2 WO2012030086A2 (en) 2012-03-08
WO2012030086A3 true WO2012030086A3 (en) 2012-04-26

Family

ID=45773345

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2011/006057 Ceased WO2012030086A2 (en) 2010-09-03 2011-08-17 Backlight unit

Country Status (3)

Country Link
KR (1) KR20120023921A (en)
TW (1) TWI596407B (en)
WO (1) WO2012030086A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104678478A (en) * 2013-11-29 2015-06-03 英业达科技有限公司 Light guide structure
CN104501050A (en) * 2014-12-31 2015-04-08 深圳市华星光电技术有限公司 Light source module and backlight module with light source module
TWI547742B (en) * 2015-06-01 2016-09-01 揚昇照明股份有限公司 Backlight module
CN111830622A (en) * 2019-04-16 2020-10-27 艾欧史密斯(中国)热水器有限公司 Panel assembly and manufacturing method, household appliance
KR102747582B1 (en) * 2020-03-24 2025-01-02 삼성디스플레이 주식회사 Light source member, display device including the same, and manufacturing method for the same
CN113031347A (en) * 2021-03-29 2021-06-25 武汉华星光电技术有限公司 Backlight module and display device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004213943A (en) * 2002-12-27 2004-07-29 Casio Comput Co Ltd Planar lighting device
KR20050055387A (en) * 2003-12-08 2005-06-13 엘지.필립스 엘시디 주식회사 Liquid crystal display module
JP2008268707A (en) * 2007-04-24 2008-11-06 Toppan Printing Co Ltd Optical sheet, backlight unit using the same, and display device
KR20090078763A (en) * 2008-01-15 2009-07-20 롬 앤드 하스 덴마크 파이낸스 에이에스 Multilayer Combined Backlight Probe Assembly

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100750130B1 (en) * 2005-03-23 2007-08-21 삼성전자주식회사 Light emitting assembly, backlight unit and display
JP4579146B2 (en) * 2005-12-06 2010-11-10 株式会社 日立ディスプレイズ Display device and planar light source device
JP5180158B2 (en) * 2008-10-31 2013-04-10 スタンレー電気株式会社 LCD backlight

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004213943A (en) * 2002-12-27 2004-07-29 Casio Comput Co Ltd Planar lighting device
KR20050055387A (en) * 2003-12-08 2005-06-13 엘지.필립스 엘시디 주식회사 Liquid crystal display module
JP2008268707A (en) * 2007-04-24 2008-11-06 Toppan Printing Co Ltd Optical sheet, backlight unit using the same, and display device
KR20090078763A (en) * 2008-01-15 2009-07-20 롬 앤드 하스 덴마크 파이낸스 에이에스 Multilayer Combined Backlight Probe Assembly

Also Published As

Publication number Publication date
TWI596407B (en) 2017-08-21
WO2012030086A2 (en) 2012-03-08
KR20120023921A (en) 2012-03-14
TW201219926A (en) 2012-05-16

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