CN102221163A - 背光组件 - Google Patents
背光组件 Download PDFInfo
- Publication number
- CN102221163A CN102221163A CN2010105700914A CN201010570091A CN102221163A CN 102221163 A CN102221163 A CN 102221163A CN 2010105700914 A CN2010105700914 A CN 2010105700914A CN 201010570091 A CN201010570091 A CN 201010570091A CN 102221163 A CN102221163 A CN 102221163A
- Authority
- CN
- China
- Prior art keywords
- light
- optical component
- straight line
- theta
- equation
- 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.)
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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
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133605—Direct backlight including specially adapted 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
- G02B6/0013—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
- G02B6/0018—Redirecting means on the surface 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
- G02B6/0013—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
-
- 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
- G02B6/0066—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
- G02F1/133553—Reflecting elements
-
- 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
- G02F1/133611—Direct backlight including means for improving the brightness uniformity
-
- 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
- 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
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
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)
Abstract
Description
Claims (10)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2010-0033882 | 2010-04-13 | ||
KR1020100033882A KR101699058B1 (ko) | 2010-04-13 | 2010-04-13 | 백라이트 어셈블리 및 이를 갖는 표시장치 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN102221163A true CN102221163A (zh) | 2011-10-19 |
CN102221163B CN102221163B (zh) | 2015-08-05 |
Family
ID=44760700
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201010570091.4A Expired - Fee Related CN102221163B (zh) | 2010-04-13 | 2010-12-02 | 背光组件 |
Country Status (3)
Country | Link |
---|---|
US (1) | US8439545B2 (zh) |
KR (1) | KR101699058B1 (zh) |
CN (1) | CN102221163B (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105782815A (zh) * | 2016-04-26 | 2016-07-20 | 广州创维平面显示科技有限公司 | 导光板、背光模组和显示设备 |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8905610B2 (en) | 2009-01-26 | 2014-12-09 | Flex Lighting Ii, Llc | Light emitting device comprising a lightguide film |
US9651729B2 (en) | 2010-04-16 | 2017-05-16 | Flex Lighting Ii, Llc | Reflective display comprising a frontlight with extraction features and a light redirecting optical element |
US9028123B2 (en) | 2010-04-16 | 2015-05-12 | Flex Lighting Ii, Llc | Display illumination device with a film-based lightguide having stacked incident surfaces |
US9075172B2 (en) * | 2010-09-20 | 2015-07-07 | Luxingtek, Ltd. | Light converting optical structure and lighting device utilizing the same |
US8814391B2 (en) | 2010-09-20 | 2014-08-26 | Luxingtek, Ltd. | Light guiding structure |
WO2012068543A1 (en) * | 2010-11-18 | 2012-05-24 | Flex Lighting Ii, Llc | Light emitting device comprising a lightguide film and aligned coupling lightguides |
EP2683980B1 (en) | 2011-03-09 | 2022-10-26 | Azumo, Inc. | Light emitting device with adjustable light output profile |
KR101347095B1 (ko) * | 2011-11-16 | 2014-01-06 | 김성제 | 렌즈형 도광판 |
US20130279194A1 (en) * | 2012-04-22 | 2013-10-24 | Liteideas, Llc | Light emitting systems and related methods |
US9690032B1 (en) | 2013-03-12 | 2017-06-27 | Flex Lighting Ii Llc | Lightguide including a film with one or more bends |
US9566751B1 (en) | 2013-03-12 | 2017-02-14 | Flex Lighting Ii, Llc | Methods of forming film-based lightguides |
US11009646B2 (en) | 2013-03-12 | 2021-05-18 | Azumo, Inc. | Film-based lightguide with interior light directing edges in a light mixing region |
CN104968998B (zh) * | 2013-05-21 | 2019-01-01 | 松下知识产权经营株式会社 | 照明装置 |
TW201510616A (zh) * | 2013-09-02 | 2015-03-16 | 隆達電子股份有限公司 | 發光組件及其製造方法 |
WO2017190813A1 (en) * | 2016-05-04 | 2017-11-09 | Lumileds Llc | Molded light guide for optically coupling light from leds |
KR20180079081A (ko) * | 2016-12-30 | 2018-07-10 | 엘지디스플레이 주식회사 | 액정 표시 장치 |
DE202017100527U1 (de) * | 2017-02-01 | 2018-05-03 | Zumtobel Lighting Gmbh | Lichtleitplatte mit Umlenkstrukturen sowie Leuchte mit dieser Lichtleitplatte |
KR102415343B1 (ko) * | 2017-09-25 | 2022-06-30 | 엘지전자 주식회사 | 디스플레이 디바이스 |
GB2568864A (en) * | 2017-10-06 | 2019-06-05 | Waveguide Lighting Ltd | A waveguide and lighting device comprising the waveguide |
KR102476140B1 (ko) * | 2017-11-20 | 2022-12-09 | 삼성전자주식회사 | 광학 소자 및 이를 포함하는 광원 모듈 |
KR102594815B1 (ko) * | 2018-06-20 | 2023-10-30 | 엘지이노텍 주식회사 | 조명 모듈 및 이를 구비한 조명 장치 |
US11994698B2 (en) | 2018-08-30 | 2024-05-28 | Azumo, Inc. | Film-based frontlight with angularly varying diffusion film |
WO2020142731A1 (en) | 2019-01-03 | 2020-07-09 | Flex Lighting Ii, Llc | Reflective display comprising a lightguide and light turning film creating multiple illumination peaks |
CN110007516A (zh) * | 2019-04-08 | 2019-07-12 | 深圳市华星光电技术有限公司 | 一种背光源模组及其显示模组 |
EP3739259A1 (en) * | 2019-05-13 | 2020-11-18 | HELLA Saturnus Slovenija d.o.o. | Optical system for homogenous surface illumination |
US11513274B2 (en) | 2019-08-01 | 2022-11-29 | Azumo, Inc. | Lightguide with a light input edge between lateral edges of a folded strip |
CN111624816B (zh) * | 2020-06-30 | 2022-07-05 | 京东方科技集团股份有限公司 | 匀光膜、背光模组和显示装置 |
JP2022140062A (ja) * | 2021-03-12 | 2022-09-26 | 株式会社エンプラス | 光束制御部材、発光装置、面光源装置および表示装置 |
US11513392B1 (en) * | 2021-09-23 | 2022-11-29 | Apple Inc. | Direct-lit backlight units with optical films |
Citations (5)
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JP2000259087A (ja) * | 1999-03-11 | 2000-09-22 | Matsushita Electric Ind Co Ltd | 面照明装置及びそれを用いた携帯端末装置 |
CN1731254A (zh) * | 2004-08-05 | 2006-02-08 | 三星电子株式会社 | 用于显示装置的背光源 |
CN1769977A (zh) * | 2004-11-03 | 2006-05-10 | 三星电子株式会社 | 背光单元和采用该背光单元的液晶显示器 |
TWI276890B (en) * | 2005-12-23 | 2007-03-21 | Coretronic Corp | Light emitting module and plane light source device |
CN101509623A (zh) * | 2008-01-15 | 2009-08-19 | 罗门哈斯丹麦金融有限公司 | 多层集成背光照明装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101112542B1 (ko) | 2004-11-03 | 2012-02-15 | 삼성전자주식회사 | 발광다이오드와 그 렌즈 |
KR101098338B1 (ko) * | 2005-04-22 | 2011-12-26 | 삼성전자주식회사 | 광학 패키지, 광학 렌즈 및 이를 갖는 백라이트 어셈블리및 표시장치 |
KR100699263B1 (ko) | 2005-07-22 | 2007-03-27 | 삼성전자주식회사 | 백라이트 유닛 및 액정표시장치 |
JP4542478B2 (ja) | 2005-08-18 | 2010-09-15 | 富士フイルム株式会社 | 導光板、これを用いる面状照明装置および液晶表示装置 |
KR20070021843A (ko) | 2005-08-20 | 2007-02-23 | 주식회사 코렌 | Led용 렌즈 |
JP4846561B2 (ja) | 2005-12-27 | 2011-12-28 | 昭和電工株式会社 | 導光部材および面光源装置ならびに表示装置 |
JP2008258096A (ja) * | 2007-04-09 | 2008-10-23 | Stanley Electric Co Ltd | 面光源装置 |
KR100869573B1 (ko) | 2007-05-29 | 2008-11-21 | 삼성전기주식회사 | 조명용 광학소자의 확산렌즈, 조명용 광학소자 및 그조명장치 |
-
2010
- 2010-04-13 KR KR1020100033882A patent/KR101699058B1/ko active IP Right Grant
- 2010-08-16 US US12/856,965 patent/US8439545B2/en active Active
- 2010-12-02 CN CN201010570091.4A patent/CN102221163B/zh not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000259087A (ja) * | 1999-03-11 | 2000-09-22 | Matsushita Electric Ind Co Ltd | 面照明装置及びそれを用いた携帯端末装置 |
CN1731254A (zh) * | 2004-08-05 | 2006-02-08 | 三星电子株式会社 | 用于显示装置的背光源 |
CN1769977A (zh) * | 2004-11-03 | 2006-05-10 | 三星电子株式会社 | 背光单元和采用该背光单元的液晶显示器 |
TWI276890B (en) * | 2005-12-23 | 2007-03-21 | Coretronic Corp | Light emitting module and plane light source device |
CN101509623A (zh) * | 2008-01-15 | 2009-08-19 | 罗门哈斯丹麦金融有限公司 | 多层集成背光照明装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105782815A (zh) * | 2016-04-26 | 2016-07-20 | 广州创维平面显示科技有限公司 | 导光板、背光模组和显示设备 |
Also Published As
Publication number | Publication date |
---|---|
CN102221163B (zh) | 2015-08-05 |
US20110249214A1 (en) | 2011-10-13 |
KR20110114311A (ko) | 2011-10-19 |
US8439545B2 (en) | 2013-05-14 |
KR101699058B1 (ko) | 2017-02-02 |
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