WO2009131333A2 - Illuminateur, unité de panneau lumineux comprenant l'illuminateur et dispositif d'affichage utilisant ladite unité - Google Patents

Illuminateur, unité de panneau lumineux comprenant l'illuminateur et dispositif d'affichage utilisant ladite unité Download PDF

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Publication number
WO2009131333A2
WO2009131333A2 PCT/KR2009/001974 KR2009001974W WO2009131333A2 WO 2009131333 A2 WO2009131333 A2 WO 2009131333A2 KR 2009001974 W KR2009001974 W KR 2009001974W WO 2009131333 A2 WO2009131333 A2 WO 2009131333A2
Authority
WO
WIPO (PCT)
Prior art keywords
light
substrate
backlight unit
substrates
light sources
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/KR2009/001974
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English (en)
Korean (ko)
Other versions
WO2009131333A3 (fr
Inventor
이상철
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.)
Individual
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Individual
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 Individual filed Critical Individual
Publication of WO2009131333A2 publication Critical patent/WO2009131333A2/fr
Publication of WO2009131333A3 publication Critical patent/WO2009131333A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G02F1/133603—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
    • 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
    • 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
    • G02F1/133613—Direct backlight characterized by the sequence of 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
    • G02F1/133628—Illuminating devices with cooling means

Definitions

  • the present invention relates to a lighting device, a backlight unit employing the same, and a display device employing the backlight unit, and more particularly, to efficiently radiate heat generated from a light source in illumination through a plurality of light sources mounted on a substrate.
  • the present invention relates to a lighting device having a structure, a backlight unit employing the same, and a display device employing the backlight unit.
  • a liquid crystal display device which is a kind of light receiving type flat panel display, does not have its own light emitting capability, and thus forms an image by selectively transmitting illumination light emitted from the outside.
  • a backlight unit for illuminating light is provided on the back of the liquid crystal display.
  • the backlight unit is classified into a direct light type and an edge light type according to the arrangement position of the light source.
  • the direct emission type is a method of directly irradiating light directly to the liquid crystal panel from a light source provided directly below the liquid crystal panel.
  • the edge emission type is a method of transferring the light emitted from the light source installed at the edge of the light guide plate to the liquid crystal panel by converting the path through the light guide plate.
  • a cold cathode fluorescent lamp which is a linear light source, is mainly used, and a light emitting diode (LED) has recently emerged.
  • CCFL cold cathode fluorescent lamp
  • LED light emitting diode
  • the light emitting diode is a point light source, and has the advantages of longer life, wider operating temperature range, environmental friendliness, and high color reproducibility than the CCFL.
  • the direct light emitting type backlight unit is configured using the LED, there is an advantage that the light can be uniformly illuminated over the entire large area of the liquid crystal panel.
  • a direct-emitting backlight unit when LED is used as a light source, several LED is mounted on one board
  • the power consumption of each LED is 1W, considering that the ratio of heat generated from the power consumption of 1W is more than 70%, heat of about 140W is generated when using 200 LEDs. The generated heat may cause deterioration of operational reliability of an electronic circuit or the like, and may cause thermal deformation of the product.
  • FIG. 1 is a cross-sectional view of a backlight unit having a conventional heat dissipation structure.
  • a conventional backlight unit includes a substrate 1, a plurality of LEDs 3 mounted on the substrate 1, and a reflective sheet provided so that the LEDs 3 are exposed on the substrate 1. 5) and a heat dissipation fin 7 provided below the substrate 1 to radiate heat to the outside.
  • the conventional backlight unit configured as described above has a practical limitation in increasing the surface area of the heat dissipation fin in consideration of the trend toward higher density of LED arrangements and slimming trends of display devices.
  • the distance between the heat absorbing portion and the heat dissipating portion becomes far, and thus there is a limit to improving the heat dissipation efficiency.
  • the conventional backlight unit may further include a heat dissipation fan that is rotated at high speed in order to increase heat dissipation efficiency.
  • a heat dissipation fan that is rotated at high speed in order to increase heat dissipation efficiency.
  • the present invention has been made in view of the above-described problems, and provides an illumination device having a structure capable of attaining slimming and thermal stability at the same time, a backlight unit employing the same, and a display device employing the backlight unit. There is this.
  • a lighting apparatus comprises: a plurality of substrates stacked and spaced apart from each other; A plurality of light sources which are separately mounted on each of the plurality of substrates, and include a plurality of light sources for irradiating light, wherein a light transmitting part through which light emitted from a light source mounted on a lower substrate is passed to a substrate disposed on an upper layer of the plurality of substrates; Formed.
  • the substrate disposed below the plurality of substrates includes a plurality of mounting portions on which some of the plurality of light sources are mounted, and a space portion formed between the plurality of mounting portions, wherein the mounting portion and the space portion are the It can be arranged alternately on the substrate.
  • the light source may include a light emitting diode.
  • the plurality of substrates may include: a first substrate having a plurality of first mounting portions on which some of the plurality of light sources are mounted, and a blank portion formed between the plurality of first mounting regions; A second substrate formed on the first substrate, the second substrate having a second mounting part spaced apart from the blank part and mounted with the remaining light sources among the plurality of light sources, wherein the light transmitting part is provided in the first mounting part; It is formed at a predetermined position of the opposite second substrate, can transmit the light irradiated from the light source mounted on the first substrate.
  • the backlight unit includes: the lighting device; It is disposed on the lighting device, and includes a diffuser plate to diffuse the light illuminated in the lighting device.
  • a display device includes: the backlight unit; And a liquid crystal panel which displays an image by selectively transmitting the light illuminated by the backlight unit.
  • the lighting apparatus according to the present invention configured as described above can be mounted by dividing a plurality of light sources into a plurality of substrates, the number of light sources mounted on one substrate can be reduced, and the distance between neighboring light sources can be kept wide. The thermal interference between light sources can be reduced. Accordingly, the heat dissipation efficiency can be improved without adopting a heat dissipation structure such as a heat dissipation plate, and a slim product can be secured.
  • the backlight unit employing the lighting device configured as described above and the display device employing the backlight unit can also ensure thermal stability and slimmer product without employing a heat dissipation structure.
  • FIG. 1 is a cross-sectional view showing a backlight unit having a conventional heat dissipation structure.
  • FIG. 2 is a partial cross-sectional view showing a lighting apparatus according to a first embodiment of the present invention.
  • Figure 3 is an exploded perspective view showing a lighting apparatus according to a first embodiment of the present invention.
  • FIG. 4 is a plan view showing a lighting apparatus according to a first embodiment of the present invention.
  • FIG. 5 is a partial cross-sectional view showing a lighting apparatus according to a second embodiment of the present invention.
  • FIG. 6 is a partial cross-sectional view showing a backlight unit according to an embodiment of the present invention.
  • FIG. 7 is a partial cross-sectional view showing a display device according to an embodiment of the present invention.
  • first mounting part 11b blank part
  • first spacer 135 second spacer
  • 2 to 4 are each a partial cross-sectional view, an exploded perspective view and a plan view showing the lighting apparatus according to the first embodiment of the present invention.
  • the lighting apparatus is divided into a plurality of substrates 10 and a plurality of substrates 10 which are stacked and spaced apart from each other by a spacer 31 or the like, and are mounted with light. It includes a plurality of light sources 20 to be irradiated.
  • the second substrate 12 positioned on the upper layer is formed with a light transmitting portion 14 through which light emitted from the light source 20a mounted on the first substrate 11 positioned on the lower layer passes.
  • the first substrate 11 includes a plurality of first mounting portions 11a on which the first light source 20a, which is part of the plurality of light sources 20, is mounted, and a blank portion 11b formed between the first mounting portions 11a.
  • the first mounting portion 11a and the blank portion 11b may be alternately formed in the horizontal and vertical directions on the first substrate 11 as shown in FIG. 3. In this case, the distance between the first light sources 20a mounted on the first substrate 11 can be increased.
  • the second substrate 13 is spaced apart from the first substrate 11 by the spacer 31, and is disposed to face the space 11b and is the second light source remaining from the plurality of light sources 20. It has the 2nd mounting part 13a by which 20b is mounted.
  • the light transmitting portion 14 of the second substrate 13 is formed to penetrate the light emitted from the first light source 20a mounted on the first substrate 11.
  • Each of the plurality of light sources 20 mounted on the first and second substrates 11 and 13 may be configured as a light emitting diode module including a base 21, a light emitting diode 23, and a lens 25. .
  • the light emitting diodes 23 are mounted on the base 21 and irradiate light.
  • the lens 25 is installed on the base 21 to cover the light emitting diodes 23 and focuses the light irradiated from the light emitting diodes 23.
  • the spacer 31 is used to separate the second substrate 13 with respect to the first substrate 11 as an example, but the spacer 31 is merely exemplary and various modifications. Yes it is possible.
  • FIG. 5 is a partial cross-sectional view showing a lighting apparatus according to a second embodiment of the present invention.
  • the lighting apparatus includes a plurality of substrates 10 stacked and spaced apart from each other, and a plurality of light sources mounted on each of the plurality of substrates 10 and irradiating light. And 20.
  • FIG. 5 illustrates a case where the first to third substrates 111, 113, and 115 are employed as the plurality of substrates 10.
  • the first substrate 111 may include a plurality of first mounting portions 111a on which the first light source 120a, which is a part of the plurality of light sources 20, is mounted, and a blank portion formed between the plurality of first mounting portions 111a. 111b).
  • the blank portion 111b is formed at a position opposite to the second and third mounting portions 113a and 115a to be described later, and is alternately formed in the horizontal and vertical directions with respect to the first mounting portion 111a. Can be.
  • the second substrate 113 is disposed on the first substrate 111 so as to be spaced apart by the first spacer 131, and the second mounting unit is disposed to face the space 111b of the first substrate 111. (113a).
  • the second light source 120b which is another part of the plurality of light sources 20, is mounted on the second mounting unit 113a.
  • the third substrate 115 is disposed on the second substrate 113 so as to be spaced apart from each other by the second spacer 135, and avoids portions facing the first and second mounting portions 111a and 113a, respectively. And a third mounting portion 115a positioned.
  • the third light source 120c which is the remainder of the light sources 20, is mounted on the third mounting unit 115a.
  • the light transmitting part 114 has a predetermined position of the second substrate 113 facing the first mounting portion 111a and a predetermined position of the third substrate 115 facing the first and second mounting portions 111a and 113a. Are formed at each location. Accordingly, light emitted from the first and second light sources 120a and 120b mounted on the first and second mounting portions 111a and 113a is formed on the second and third substrates 113 and 115. It may be illuminated through the light emitting unit 114.
  • Each of the plurality of light sources 20 may be configured as a light emitting diode module including a base 21, a light emitting diode 23, and a lens 25 as described above.
  • the two substrates 11, 12 and three substrates 111, 112, and 113 are described as examples of the plurality of substrates 10, but the number of substrates may be increased as necessary. In addition, the size of each of the plurality of substrates 10 may also vary as necessary.
  • the heat dissipation efficiency can be improved without adopting a heat dissipation structure such as a heat dissipation plate, thereby preventing deterioration of operation reliability of the electronic circuit and the like, and thermal deformation of the product.
  • FIG. 6 is a partial cross-sectional view showing a backlight unit according to an embodiment of the present invention.
  • a backlight unit illuminates uniform light on a display device, and includes an illumination device 50 and a diffuser plate 60 disposed on the illumination device 50. do.
  • the illumination device 50 is a direct light emission type, and includes a plurality of substrates 51 and a plurality of light sources 55 mounted on each of the plurality of substrates 51 and irradiating light. Since the lighting device 50 is substantially the same as the lighting device 50 according to the embodiment of the present invention described with reference to FIGS. 2 to 5, a detailed description thereof will be omitted.
  • the diffusion plate 60 diffuses the light emitted from the plurality of light sources 55 disposed on the substrate 51 so that uniform light is illuminated on the display panel.
  • FIG. 7 is a partial cross-sectional view showing a display device employing a backlight unit according to an embodiment of the present invention.
  • a display apparatus includes a backlight unit 70 and a liquid crystal panel 80 that implements an image by selectively transmitting the light illuminated by the backlight unit 70. Include.
  • the backlight unit 70 includes an illumination device 71 for illuminating light and a diffuser plate 75 for diffusing the illuminated light to be uniform light. Since the backlight unit 70 is substantially the same as the backlight unit according to the exemplary embodiment of the present invention described with reference to FIG. 6, a detailed description thereof will be omitted.
  • the distance between neighboring light sources can be kept wide and the number of light sources mounted on one substrate can be reduced.
  • the heat radiation efficiency can be improved. Therefore, it is possible to prevent deterioration of operation reliability and thermal deformation of the product without using a heat dissipation structure such as a heat sink.
  • the present invention can be applied to an illumination device using a light source such as an LED, a backlight unit employing such an illumination device, and a display device employing such a backlight unit.
  • a light source such as an LED
  • a backlight unit employing such an illumination device
  • a display device employing such a backlight unit.

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  • 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)
  • Liquid Crystal (AREA)

Abstract

L'invention concerne un illuminateur, une unité de panneau lumineux comprenant l'illuminateur et un dispositif d'affichage utilisant l'unité de panneau lumineux, l'illuminateur présentant une structure qui émet efficacement de la chaleur produite tandis que plusieurs sources de lumière installées sur plusieurs susbtrats diffusent de la lumière. Ledit illuminateur est caractérisé en ce qu'il comprend plusieurs substrats empilés dans un espace et plusieurs sources de lumières montées respectivement sur chaque substrat qui diffusent la lumière. Une unité de transmission de la lumière est formée sur le substrat supérieur parmi lesdits substrats de sorte que la lumière diffusée par la source de lumière installée sur le substrat inférieur peut traverser la source de transmission de lumière.
PCT/KR2009/001974 2008-04-21 2009-04-16 Illuminateur, unité de panneau lumineux comprenant l'illuminateur et dispositif d'affichage utilisant ladite unité Ceased WO2009131333A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020080036524A KR100912426B1 (ko) 2008-04-21 2008-04-21 조명장치, 이를 채용한 백라이트 유니트 및 백라이트유니트를 채용한 디스플레이장치
KR10-2008-0036524 2008-04-21

Publications (2)

Publication Number Publication Date
WO2009131333A2 true WO2009131333A2 (fr) 2009-10-29
WO2009131333A3 WO2009131333A3 (fr) 2010-02-18

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PCT/KR2009/001974 Ceased WO2009131333A2 (fr) 2008-04-21 2009-04-16 Illuminateur, unité de panneau lumineux comprenant l'illuminateur et dispositif d'affichage utilisant ladite unité

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KR (1) KR100912426B1 (fr)
WO (1) WO2009131333A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3144581A4 (fr) * 2014-05-16 2018-01-03 Boe Technology Group Co. Ltd. Module de rétroéclairage et dispositif d'affichage
CN109188780A (zh) * 2018-11-21 2019-01-11 厦门天马微电子有限公司 一种直下式背光模组及显示装置
CN116093090A (zh) * 2023-02-28 2023-05-09 厦门天马微电子有限公司 一种发光面板、显示面板及显示装置
WO2025035441A1 (fr) * 2023-08-17 2025-02-20 京东方科技集团股份有限公司 Module électroluminescent et dispositif d'affichage

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KR101100721B1 (ko) * 2009-08-06 2011-12-29 목산전자주식회사 엘이디 구조체 및 이를 장착한 조명 장치
KR102425316B1 (ko) * 2017-08-09 2022-07-26 쑤저우 레킨 세미컨덕터 컴퍼니 리미티드 조명 모듈 및 조명 장치
CN109557720B (zh) * 2018-12-04 2022-07-12 厦门天马微电子有限公司 一种背光模组及显示装置

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JP2003187623A (ja) * 2001-12-18 2003-07-04 Sharp Corp 照明装置及びこれを用いた表示装置
JP2005310751A (ja) * 2004-03-24 2005-11-04 Matsushita Electric Ind Co Ltd 照明装置
JP4445842B2 (ja) * 2004-11-30 2010-04-07 オプトレックス株式会社 面状照明装置
JP2006258972A (ja) * 2005-03-15 2006-09-28 Sony Corp バックライト装置及び液晶表示装置
KR20070026970A (ko) * 2005-08-29 2007-03-09 삼성전자주식회사 백라이트 어셈블리 및 이를 갖는 표시장치
JP2007073399A (ja) * 2005-09-08 2007-03-22 Sanyo Epson Imaging Devices Corp 照明装置及び電気光学装置
JP5040194B2 (ja) * 2006-07-07 2012-10-03 エプソンイメージングデバイス株式会社 液晶表示モジュール
KR100864564B1 (ko) * 2007-01-11 2008-10-20 한국문화콘텐츠진흥원 시나리오 기반의 문화 유산 저작 시스템

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3144581A4 (fr) * 2014-05-16 2018-01-03 Boe Technology Group Co. Ltd. Module de rétroéclairage et dispositif d'affichage
CN109188780A (zh) * 2018-11-21 2019-01-11 厦门天马微电子有限公司 一种直下式背光模组及显示装置
CN109188780B (zh) * 2018-11-21 2022-04-19 厦门天马微电子有限公司 一种直下式背光模组及显示装置
CN116093090A (zh) * 2023-02-28 2023-05-09 厦门天马微电子有限公司 一种发光面板、显示面板及显示装置
WO2025035441A1 (fr) * 2023-08-17 2025-02-20 京东方科技集团股份有限公司 Module électroluminescent et dispositif d'affichage

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Publication number Publication date
KR100912426B1 (ko) 2009-08-14
WO2009131333A3 (fr) 2010-02-18

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