KR20150073267A - 백라이트 유닛 및 이를 포함한 액정표시장치 - Google Patents
백라이트 유닛 및 이를 포함한 액정표시장치 Download PDFInfo
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- KR20150073267A KR20150073267A KR1020130160402A KR20130160402A KR20150073267A KR 20150073267 A KR20150073267 A KR 20150073267A KR 1020130160402 A KR1020130160402 A KR 1020130160402A KR 20130160402 A KR20130160402 A KR 20130160402A KR 20150073267 A KR20150073267 A KR 20150073267A
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/68—Details of reflectors forming part of the light source
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
- F21V7/041—Optical design with conical or pyramidal surface
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- 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
- G02F1/133606—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
- G02F1/133608—Direct backlight including particular frames or supporting means
-
- 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
- G02F1/13363—Birefringent elements, e.g. for optical compensation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- Nonlinear Science (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
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- General Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Planar Illumination Modules (AREA)
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Abstract
본 발명에 따른 액정표시장치는 액정패널과, 다수의 LED를 포함하며 상기 액정패널의 하부에 배치되는 LED 어셈블리와 상기 다수의 LED 각각으로부터 출사된 빛을 상기 액정패널쪽으로 반사시키는 반사판을 포함하는 백라이트 유닛을 포함하고, 상기 반사판은 내면에서부터 돌출되어 그 중앙부가 점점 좁아지는 광패턴을 구비하는 것을 특징으로 한다.
이를 통해 전체 LED의 수를 줄이며, 경량이면서 가격 경쟁력을 갖춘 액정표시장치를 구현할 수 있게 된다.
Description
도 2는 본 발명의 바람직한 실시예에 따른 액정표시장치를 도시한 단면도.
도 3은 본 발명의 바람직한 실시예에 따른 반사판을 도시한 사시도.
도 4는 본 발명의 바람직한 실시예에 따른 백라이트 유닛에서의 광 진행경로를 설명하기 위한 도면.
도 5는 본 발명의 다른 실시예에 따른 액정표시장치를 도시한 단면도.
도 6은 본 발명의 실시예에 따른 반사판에 형성된 광패턴의 다른 예를 보여주는 도면.
120: 백라이트 유닛 129: LED 어셈블리
127, 227: 반사판 125, 225: 제1부분
125a, 225a: LED관통홀 125b, 225b: 광패턴
126, 226: 제2부분 124: 확산판
121: 광학시트
Claims (14)
- 액정패널과;
다수의 LED를 포함하며 상기 액정패널의 하부에 배치되는 LED 어셈블리와 상기 다수의 LED 각각으로부터 출사된 빛을 상기 액정패널쪽으로 반사시키는 반사판을 포함하는 백라이트 유닛을 포함하고,
상기 반사판은 내면에서부터 돌출되어 그 중앙부가 점점 좁아지는 광패턴을 구비하는 것을 특징으로 하는 액정표시장치.
- 제 1항에 있어서,
상기 광패턴은 사방에 위치된 LED관통홀의 중앙에 위치되는 것을 특징으로 하는 액정표시장치.
- 제 1항에 있어서,
상기 광패턴은 원뿔형상 또는 측면이 다면체로 구성된 피라미드형상인 것을 특징으로 하는 액정표시장치. - 제 3항에 있어서,
상기 파라미드 형상의 측면은 곡률을 가지는 곡면인 것을 특징으로 하는 액정표시장치.
- 제 3항에 있어서,
상기 광패턴의 끝단에는 결합홀이 구비된 것을 특징으로 하는 액정표시장치.
- 제 5항에 있어서,
상기 백라이트 유닛은,
상기 결합홀에 결합되는 지지핀과,
상기 반사판의 상부로 위치되는 확산판을 더 포함하고,
상기 확산판은 상기 지지핀을 통해 상기 반사판과의 광학갭을 일정하게 유지하는 것을 특징으로 하는 액정표시장치.
- 제 1항에 있어서,
상기 반사판의 상부로 위치되는 확산판을 더 포함하고,
상기 확산판은 상기 광패턴을 통해 상기 반사판과의 광학갭을 일정하게 유지하는 것을 특징으로 하는 액정표시장치.
- 다수의 LED를 포함한 LED 어셈블리와;
상기 다수의 LED 각각으로부터 출사된 빛을 전면방향을 향하도록 반사시키고, 내면에서부터 돌출된 광패턴을 구비하는 반사판을 포함하고,
상기 광패턴은 끝단으로 갈수록 그 중앙부가 점점 좁아지는 것이 특징인 백라이트 유닛.
- 제 8항에 있어서,
상기 광패턴은 사방에 위치된 LED관통홀의 중앙에 위치되는 것을 특징으로 하는 백라이트 유닛.
- 제 8항에 있어서,
상기 광패턴은 원뿔형상 또는 측면이 다면체로 구성된 피라미드형상인 것을 특징으로 하는 백라이트 유닛.
- 제 10항에 있어서,
상기 파라미드 형상의 측면은 곡률을 가지는 곡면인 것을 특징으로 하는 백라이트 유닛.
- 제 10항에 있어서,
상기 광패턴의 끝단에는 결합홀이 구비된 것을 특징으로 하는 백라이트 유닛.
- 제 8항에 있어서,
상기 결합홀에 결합되는 지지핀과,
상기 반사판의 상부로 위치되는 확산판을 더 포함하고,
상기 확산판은 상기 지지핀을 통해 상기 반사판과의 광학갭을 일정하게 유지하는 것을 특징으로 하는 백라이트 유닛.
- 제 8항에 있어서,
상기 반사판의 상부로 위치되는 확산판을 더 포함하고,
상기 확산판은 상기 광패턴을 통해 상기 반사판과의 광학갭을 일정하게 유지하는 것을 특징으로 하는 백라이트 유닛.
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3115838A1 (en) * | 2015-07-06 | 2017-01-11 | Samsung Electronics Co., Ltd. | Backlight unit of display apparatus and display apparatus |
CN107703678A (zh) * | 2017-09-11 | 2018-02-16 | 青岛海信电器股份有限公司 | 一种直下式背光模组以及显示装置 |
CN109613753A (zh) * | 2018-12-28 | 2019-04-12 | 厦门天马微电子有限公司 | 一种背光模组以及电子设备 |
CN111308778A (zh) * | 2018-12-11 | 2020-06-19 | 乐金显示有限公司 | 背光单元及包括背光单元的显示装置 |
KR102182715B1 (ko) * | 2020-07-28 | 2020-11-24 | 강현주 | 엘이디 평판 조명 |
Families Citing this family (1)
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---|---|---|---|---|
KR20240064666A (ko) * | 2021-10-13 | 2024-05-13 | 엘지전자 주식회사 | 디스플레이 디바이스 |
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KR20080113901A (ko) * | 2007-06-26 | 2008-12-31 | 엘지이노텍 주식회사 | 광원 장치 및 이를 이용한 디스플레이 장치 |
JP2010108642A (ja) * | 2008-10-28 | 2010-05-13 | Sekisui Plastics Co Ltd | 光反射板及びこれを用いた照明体 |
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KR20080113901A (ko) * | 2007-06-26 | 2008-12-31 | 엘지이노텍 주식회사 | 광원 장치 및 이를 이용한 디스플레이 장치 |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3115838A1 (en) * | 2015-07-06 | 2017-01-11 | Samsung Electronics Co., Ltd. | Backlight unit of display apparatus and display apparatus |
CN106338859A (zh) * | 2015-07-06 | 2017-01-18 | 三星电子株式会社 | 显示设备的背光单元及显示设备 |
US10041653B2 (en) | 2015-07-06 | 2018-08-07 | Samsung Electronics Co., Ltd. | Backlight unit of display apparatus and display apparatus |
CN107703678A (zh) * | 2017-09-11 | 2018-02-16 | 青岛海信电器股份有限公司 | 一种直下式背光模组以及显示装置 |
CN111308778A (zh) * | 2018-12-11 | 2020-06-19 | 乐金显示有限公司 | 背光单元及包括背光单元的显示装置 |
CN111308778B (zh) * | 2018-12-11 | 2023-02-21 | 乐金显示有限公司 | 背光单元及包括背光单元的显示装置 |
CN109613753A (zh) * | 2018-12-28 | 2019-04-12 | 厦门天马微电子有限公司 | 一种背光模组以及电子设备 |
CN109613753B (zh) * | 2018-12-28 | 2021-11-16 | 厦门天马微电子有限公司 | 一种背光模组以及电子设备 |
KR102182715B1 (ko) * | 2020-07-28 | 2020-11-24 | 강현주 | 엘이디 평판 조명 |
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