WO2012030084A1 - Unité de rétro-éclairage - Google Patents

Unité de rétro-éclairage Download PDF

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Publication number
WO2012030084A1
WO2012030084A1 PCT/KR2011/006055 KR2011006055W WO2012030084A1 WO 2012030084 A1 WO2012030084 A1 WO 2012030084A1 KR 2011006055 W KR2011006055 W KR 2011006055W WO 2012030084 A1 WO2012030084 A1 WO 2012030084A1
Authority
WO
WIPO (PCT)
Prior art keywords
guide plate
light guide
backlight unit
optical path
unit according
Prior art date
Application number
PCT/KR2011/006055
Other languages
English (en)
Inventor
Kyoung Soo Ahn
Sang Jun Park
Kyoung Jong Yoo
Jong Sun Kim
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 WO2012030084A1 publication Critical patent/WO2012030084A1/fr

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Classifications

    • 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
    • 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
    • G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • 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
    • G02B6/0066—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 characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • 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
    • 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
    • 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

Definitions

  • the present disclosure relates to a backlight unit.
  • Cold cathode fluorescent lamps had been widely used as backlight light sources of liquid crystal displays (LCDs) owing to their inexpensive prices and easy-to-assemble characteristics.
  • cold cathode fluorescent lamps have demerits such as mercury-related environmental problems, low response time, and poor color reproduction characteristics.
  • LEDs light emitting diodes
  • Backlight units can be classified into edge type backlight units and direct type backlight units.
  • edge type backlight units light is incident on a side of a light guide plate, and the light is guided to a panel through the top surface of the light guide plate.
  • an LED is disposed at a backside of a diffusion plate, and light emitted from the LED is supplied to a panel through the diffusion plate.
  • edge type backlight units can be easily made in thin shapes, it is difficult to ensure light uniformity if the size of a liquid crystal panel is large.
  • direct type backlight units into thin shapes due to a distance between an LED and a diffusion plate although direct type backlight units can be easily made in large sizes.
  • Embodiments provide a backlight unit configured to prevent locally concentrated light emission from a light guide plate.
  • a backlight unit includes: a light guide plate comprising a plurality of grooves; a plurality of side emitting type light emitting devices disposed in the grooves, respectively; and an optical path change part disposed between the grooves to change optical paths of light emitted from the side emitting type light emitting devices.
  • the optical path change part is disposed between the grooves in which the side emitting type light emitting devices are inserted, so as to change optical paths of light emitted from the side emitting type light emitting devices and thus to prevent locally concentrated emission of light from the light guide plate. Therefore, brightness irregularity can be reduced.
  • beads may be dispersed in the resin layer to irregularly reflect light emitted from the side emitting type light emitting devices and thus to prevent locally concentrated emission from the light guide plate. Therefore, hot spots can be reduced.
  • the PCB and the light guide plate can be coupled to each other by using the optical path change groove formed in the light guide plate to reduce hot spots, an additional coupling part or material such as an adhesive is not necessary, and the thickness of the backlight unit can be reduced.
  • Fig. 1 is a schematic sectional view illustrating a backlight unit according to a first embodiment.
  • Fig. 2 is a schematic sectional view illustrating a backlight unit according to a second embodiment.
  • Fig. 3 is a schematic sectional view illustrating a backlight unit according to a third embodiment.
  • Fig. 4 is a schematic sectional view for explaining light propagation paths in a comparison example of a backlight unit of the present disclosure.
  • Fig. 5 is a schematic sectional view for explaining light propagation paths in a backlight unit of an embodiment.
  • Fig. 1 is a schematic partial sectional view illustrating a backlight unit according to a fourth embodiment.
  • Fig. 7 is a schematic partial sectional view illustrating a backlight unit according to a fifth embodiment.
  • Fig. 8 is a schematic partial sectional view illustrating a backlight unit according to a six embodiment.
  • Fig. 9 is a schematic partial sectional view illustrating a backlight unit according to a seventh embodiment.
  • Fig. 10 is a schematic partial sectional view illustrating a backlight unit according to an eighth embodiment.
  • Fig. 1 is a schematic sectional view illustrating a backlight unit according to a first embodiment
  • Fig. 2 is a schematic sectional view illustrating a backlight unit according to a second embodiment
  • Fig. 3 is a schematic sectional view illustrating a backlight unit according to a third embodiment.
  • Backlight units of the embodiments include: a light guide plate 100 in which a plurality of grooves 110a and 110b are formed; a plurality of side emitting type light emitting devices 310a and 310b; and an optical path change part disposed between the grooves 110a and 110b to change optical paths of light emitted from the side emitting type light emitting devices 310a and 310b.
  • optical paths of light emitted from the side emitting type light emitting devices 310a and 310b are changed at the light path change part, and then the light is incident on the light guide plate 100. Thereafter, the light is emitted to the outside through the light guide plate 100.
  • the side emitting type light emitting devices 310a and 310b may be provided in the form of packages in which light emitting diodes (LEDs) are packaged.
  • LEDs light emitting diodes
  • the LEDs may be color LEDs capable of emitting at least one of red light, blue light, green light, and white light, or may be ultraviolet (UV) LED.
  • the color LEDs may include a combination of red, blue, green LED, and white LEDs. Arrangement of the color LEDs, and light types of the color LEDs may be changed within the technical scope of the embodiments.
  • the side emitting type light emitting devices 310a and 310b may be disposed on a printed circuit board (PCB) 300.
  • PCB printed circuit board
  • the PCB 300 may be a metal core PCB, an FR-4 PCB, a general PCB, a flexible PCB, or a ceramic PCB.
  • the PCB 300 is not limited thereto, but may be any other PCB in the technical scope of the embodiments.
  • a reflective member may be disposed at the topside of the PCB 300 to reflect light incident from the side emitting type light emitting devices 310a and 310b in an upward direction.
  • the light guide plate 100 may be formed of a transparent material.
  • the light guide plate 100 may be formed of one of an acrylic resin-based material such as polymethylmethacrylate (PMMA), a polyethylene terephthalate (PET) resin, a poly carbonate (PC) resin, and a polyethylene naphthalate (PEN) resin.
  • PMMA polymethylmethacrylate
  • PET polyethylene terephthalate
  • PC poly carbonate
  • PEN polyethylene naphthalate
  • the grooves 110a and 110b may be formed in the bottom side of the light guide plate 100.
  • the grooves 110a and 110b may be uniformly arranged on the light guide plate 100.
  • the optical path change part may be disposed in the topside or bottom side of the light guide plate 100 between the light emitting devices 310a and 310b.
  • the topside of the light guide plate 100 is a light emitting surface through which light emitted from the light emitting devices 310a and 310b propagates to the outside, the bottom side of the light guide plate 100 is a surface facing the PCB 300 on which the light emitting devices 310a and 310b are supported.
  • the optical path change part may be one of an optical path change groove 115a formed in the topside of the light guide plate 100 as shown in Fig. 1, an optical path change groove 115b formed in the bottom side of the light guide plate 100 as shown in Fig. 2, and an opening 116 formed through the topside and bottom side of the light guide plate 100 as shown in Fig. 3.
  • the depths of the optical path change grooves 115a and 115b formed in the topside and bottom side of the light guide plate 100 may be smaller than the thickness of the light guide plate 100 but greater than 1/2 the thickness of the light guide plate 100.
  • the optical path change grooves 115a and 115b may be openings penetrating the topside and bottom side of the light guide plate 100 (refer to the opening 116 in Fig. 3). In other words, grooves may not be defined.
  • the depths of the optical path change grooves 115a and 115b are smaller than 1/2 the thickness of the light guide plate 100, for example, light emitted from one of the side emitting type light emitting device 310a may propagate toward the neighboring side emitting type light emitting device 310b, and thus light emitted from the side emitting type light emitting device 310a and light emitted from the neighboring side emitting type light emitting device 310b may be superposed to generate a hot spot.
  • the propagation path of light can be properly changed at the optical path change part, and thus light can propagate to the outside without being locally concentrated in the light guide plate 100. Owing to this, generation of a hot spot can be prevented in the light guide plate 100, and thus brightness irregularity can be reduced.
  • the optical path change part is disposed between the grooves in which the side emitting type light emitting devices are inserted, so as to change optical paths of light emitted from the side emitting type light emitting devices and thus to prevent locally concentrated emission of light from the light guide plate. Therefore, brightness irregularity can be reduced.
  • Fig. 4 is a schematic sectional view for explaining light propagation paths in a comparison example of a backlight unit of the present disclosure
  • Fig. 5 is a schematic sectional view for explaining light propagation paths in a backlight unit of an embodiment.
  • an optical path change part is not disposed between grooves 110a and 110b of a light guide plate 100 in which side emitting type light emitting devices 310a and 310b are inserted.
  • a light beam (A) emitted from the side emitting type light emitting device 310a may propagate the light guide plate 100 toward the groove 110b where the neighboring side emitting type light emitting device 310b is disposed, and the light beam (A) may be refracted at the groove 110b to the outside through a particular region (k) of the light guide plate 100.
  • a light beam (B) emitted from the side emitting type light emitting device 310b may be output to the outside through the particular region (K) of the light guide plate 100.
  • light emitted from the comparison example may have brightness irregularity due to a hot spot.
  • an optical path change part such as an optical path change groove 115a is formed in the topside of a light guide plate 100 between side emitting type light emitting devices 310a and 310b. Therefore, the optical path of a light beam A1 emitted from the side emitting type light emitting device 310a is changed at the optical path change groove 115a so that the light beam A1 can be output to the outside along an optical path spaced apart from an optical path of a light beam B1 emitted from the side emitting type light emitting device 310b.
  • light beams emitted from the side emitting type light emitting devices 310a and 310b are not concentrated on a particular region of the light guide plate 100, and thus hot spots and brightness irregularity of light emitted from the backlight unit can be prevented.
  • Fig. 6 is a schematic partial sectional view illustrating a backlight unit according to a fourth embodiment
  • Fig. 7 is a schematic partial sectional view illustrating a backlight unit according to a fifth embodiment
  • Fig. 8 is a schematic partial sectional view illustrating a backlight unit according to a sixth embodiment.
  • a resin layer 230 is disposed in at least a part of an optical path change groove 115a which is provided in a light guide plate 100 as an example of an optical path change part.
  • the resin layer 230 refracts light emitted from a side emitting type light emitting device 310a to change the optical path of the light so that the light may not combine with light emitted from a neighboring side emitting type light emitting device 310b. Therefore, light may not be concentrated on a particular region of the light guide plate 100.
  • an optical path change part may be one of the optical path change groove 115a formed in the topside of the light guide plate 100, an optical path change groove (not shown) formed in the bottom side of the light guide plate 100, and an opening (not shown) formed through the topside and bottom side of the light guide plate.
  • the resin layer 230 may be disposed in a part of or all the inside of the optical path change part.
  • the resin layer 230 may be disposed in a part of the optical path change groove 115a which is formed as an example of the optical path change part.
  • the resin layer 230 may also be disposed on the topside or bottom side of the light guide plate 100.
  • the resin layer 230 is disposed in the grooves 110a and 110b 310a where the side emitting type light emitting devices 310a and 310b are placed.
  • the refractive index of the resin layer 230 may be different from the refractive index of the light guide plate 100. That is, the refractive index of the resin layer 230 may be greater or smaller than the refractive index of the light guide plate 100.
  • Fig. 9 is a schematic partial sectional view illustrating a backlight unit according to a seventh embodiment.
  • beads 220 are dispersed in a resin layer 230.
  • the beads 220 irregularly reflects light emitted from side emitting type light emitting devices 310a and 310b so that locally concentrated emission from a light guide plate 100 can be prevented. Therefore, hot spots can be reduced.
  • most of light emitted from the side emitting type light emitting device 310a may be irregularly reflected by the beads 220 dispersed in the resin layer 230.
  • the beads 220 may include at least one of acryl, silicon, glass, and polystyrene.
  • Fig. 10 is a schematic partial sectional view illustrating a backlight unit according to an eighth embodiment.
  • the optical path change groove 115b may be used for connecting a light guide plate 100 to a PCB 300 on which side emitting type light emitting devices 310a and 310b are disposed.
  • a penetration hole 320 may be formed in the PCB 300 in a manner such that the penetration hole 320 communicates with the optical path change groove 115b, and a coupling part such as a screw may be inserted in the penetration hole 320 of the PCB 300 and the optical path change groove 115b of the light guide plate 100, so as to couple the PCB 300 and the light guide plate 100.
  • screw grooves may be formed on the walls of the penetration hole 320 of the PCB 300 and the optical path change groove 115b of the light guide plate 100, and the coupling part may be coupled to the screw grooves.
  • the PCB 300 and the light guide plate 100 are coupled to each other by using the optical path change groove 115b formed in the light guide plate 100 to reduce hot spots, an additional coupling part or material such as an adhesive is not necessary, and the thickness of the backlight unit can be reduced.
  • the optical path change part is disposed between the grooves in which the side emitting type light emitting devices are inserted, so as to change optical paths of light emitted from the side emitting type light emitting devices and thus to prevent locally concentrated emission of light from the light guide plate. Therefore, brightness irregularity can be reduced.
  • beads may be dispersed in the resin layer to irregularly reflect light emitted from the side emitting type light emitting devices and thus to prevent locally concentrated emission from the light guide plate. Therefore, hot spots can be reduced.
  • the PCB and the light guide plate can be coupled to each other by using the optical path change groove formed in the light guide plate to reduce hot spots, an additional coupling part or material such as an adhesive is not necessary, and the thickness of the backlight unit can be reduced.

Abstract

L'invention concerne une unité de rétro-éclairage. Ladite unité de rétro-éclairage comprend une plaque guide de lumière, une pluralité de dispositifs électroluminescents de type à émission latérale et un élément de modification de parcours optique. La plaque guide de lumière comprend une pluralité de rainures et les dispositifs électroluminescents de type à émission latérale sont disposés dans les rainures, respectivement. L'élément de modification de parcours optique est monté entre les rainures de sorte à modifier les parcours optiques de la lumière émise à partir des dispositifs électroluminescents de type à émission latérale.
PCT/KR2011/006055 2010-08-31 2011-08-17 Unité de rétro-éclairage WO2012030084A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2010-0084959 2010-08-31
KR1020100084959A KR20120020982A (ko) 2010-08-31 2010-08-31 백라이트 유닛

Publications (1)

Publication Number Publication Date
WO2012030084A1 true WO2012030084A1 (fr) 2012-03-08

Family

ID=45773090

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2011/006055 WO2012030084A1 (fr) 2010-08-31 2011-08-17 Unité de rétro-éclairage

Country Status (3)

Country Link
KR (1) KR20120020982A (fr)
TW (1) TWI509323B (fr)
WO (1) WO2012030084A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014101305A1 (fr) * 2012-12-26 2014-07-03 深圳市华星光电技术有限公司 Module à cristaux liquides
CN106773302A (zh) * 2016-12-30 2017-05-31 深圳市华星光电技术有限公司 背光模组及液晶显示器

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109285477A (zh) * 2018-01-18 2019-01-29 马飞 一种隐形立体发光标识

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JP2004241237A (ja) * 2003-02-05 2004-08-26 Sharp Corp 面状照明装置およびこれを使用した液晶表示装置
KR20090025552A (ko) * 2007-09-06 2009-03-11 한성엘컴텍 주식회사 발광소자를 포함하는 면 발광장치
JP2009076349A (ja) * 2007-09-21 2009-04-09 Epson Imaging Devices Corp 照明装置、電気光学装置、及び電子機器
JP2009289701A (ja) * 2008-05-30 2009-12-10 Sharp Corp 照明装置、面光源装置、および液晶表示装置

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JPWO2006107105A1 (ja) * 2005-04-01 2008-10-02 ソニー株式会社 バックライト装置、液晶表示装置及び光偏向シート
TWI286190B (en) * 2005-10-25 2007-09-01 Chunghwa Picture Tubes Ltd Edge-type backlight module with a lock mechanism for combining a light guide plate with a backing plate
TWI322281B (en) * 2007-04-04 2010-03-21 Eternal Chemical Co Ltd Thin and flexible light guide element

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Publication number Priority date Publication date Assignee Title
JP2004241237A (ja) * 2003-02-05 2004-08-26 Sharp Corp 面状照明装置およびこれを使用した液晶表示装置
KR20090025552A (ko) * 2007-09-06 2009-03-11 한성엘컴텍 주식회사 발광소자를 포함하는 면 발광장치
JP2009076349A (ja) * 2007-09-21 2009-04-09 Epson Imaging Devices Corp 照明装置、電気光学装置、及び電子機器
JP2009289701A (ja) * 2008-05-30 2009-12-10 Sharp Corp 照明装置、面光源装置、および液晶表示装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014101305A1 (fr) * 2012-12-26 2014-07-03 深圳市华星光电技术有限公司 Module à cristaux liquides
CN106773302A (zh) * 2016-12-30 2017-05-31 深圳市华星光电技术有限公司 背光模组及液晶显示器
CN106773302B (zh) * 2016-12-30 2020-02-28 深圳市华星光电技术有限公司 背光模组及液晶显示器

Also Published As

Publication number Publication date
TW201219924A (en) 2012-05-16
KR20120020982A (ko) 2012-03-08
TWI509323B (zh) 2015-11-21

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