KR20170142681A - 직하 방식 백라이트유닛용 도광판 - Google Patents
직하 방식 백라이트유닛용 도광판 Download PDFInfo
- Publication number
- KR20170142681A KR20170142681A KR1020160076553A KR20160076553A KR20170142681A KR 20170142681 A KR20170142681 A KR 20170142681A KR 1020160076553 A KR1020160076553 A KR 1020160076553A KR 20160076553 A KR20160076553 A KR 20160076553A KR 20170142681 A KR20170142681 A KR 20170142681A
- Authority
- KR
- South Korea
- Prior art keywords
- light
- light guide
- guide plate
- direct
- backlight unit
- 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
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- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims abstract description 16
- 239000004926 polymethyl methacrylate Substances 0.000 claims abstract description 16
- 239000004417 polycarbonate Substances 0.000 claims abstract description 15
- 229920000515 polycarbonate Polymers 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims 1
- 239000004973 liquid crystal related substance Substances 0.000 description 8
- 239000000758 substrate Substances 0.000 description 7
- 238000009792 diffusion process Methods 0.000 description 3
- 241000519995 Stachys sylvatica Species 0.000 description 2
- 238000003491 array Methods 0.000 description 2
- 238000005401 electroluminescence Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Images
Classifications
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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
- G02F1/133524—Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides
-
- 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
- G02B6/0045—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 by shaping at least a portion of the light guide
- G02B6/0046—Tapered light guide, e.g. wedge-shaped 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
- G02B6/0066—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
- G02B6/0073—Light emitting diode [LED]
-
- 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
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
-
- 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
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
-
- 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
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B2006/12035—Materials
- G02B2006/12069—Organic material
- G02B2006/12071—PMMA
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Planar Illumination Modules (AREA)
Abstract
본 발명은 PMMA(Poly Methyl Methacrylate) 또는 PC(Poly Carbonat)를 사용하여 제작되고 밑면에 형성된 제1 요부에 광원(예컨대, LED)과 정해진 거리의 에어갭(Air-gap)을 형성하고 상기 제1 요부의 좌우 양방향으로 형성된 적어도 1개 이상의 제2 요부가 광원(예컨대, LED)으로부터 방출되는 빛을 받아들여 도광판의 표면을 통해 빛을 균일하게 분포시켜 주기 때문에, 광원(예컨대, LED)으로부터 방출되는 빛이 충분히 균일하게 광 조사영역에 확산하게 하기 위해서 도광판의 두께를 늘릴 필요가 없으며, 이로 인해 직하 방식 백라이트유닛의 두께를 더욱더 슬림화할 수 있다.
Description
도 2는 본 발명에 따른 직하 방식 백라이트유닛용 도광판의 제2실시예의 단면도.
도 3은 본 발명에 따른 직하 방식 백라이트유닛용 도광판의 제3실시예의 단면도.
도 4는 본 발명에 따른 직하 방식 백라이트유닛용 도광판의 제4실시예의 단면도.
도 5는 본 발명에 따른 직하 방식 백라이트유닛용 도광판의 제5실시예의 단면도.
120: 제2 요부 200: 기판
210: LED
Claims (3)
- PMMA(Poly Methyl Methacrylate) 또는 PC(Poly Carbonat)로 제작된 것이고, 밑면 중 광 조사영역의 직하 지점에 위치하는 광원과의 사이 부분에 광원과 정해진 거리의 에어갭(Air-gap)을 형성하는 제1 요부가 형성되어 있고, 상기 제1 요부를 중심으로 좌우 양방향으로 멀어질수록 높이가 비례적으로 높아지는 적어도 1개 이상의 제2 요부가 형성되어 있는 것을 특징으로 하는 직하 방식 백라이트유닛용 도광판.
- 제 1 항에 있어서, 상기 제1 요부는 구형 혹은 반구형 혹은 아치형 중 어느 하나로 된 것을 특징으로 하는 직하 방식 백라이트유닛용 도광판.
- 제 1 항에 있어서, 상기 제2 요부는 구형 혹은 반구형 혹은 아치형 혹은 삼각추형 혹은 원추형 혹은 사각추형 혹은 마킹 도트(marking dot) 중 어느 하나로 된 것을 특징으로 하는 직하 방식 백라이트유닛용 도광판.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020160076553A KR20170142681A (ko) | 2016-06-20 | 2016-06-20 | 직하 방식 백라이트유닛용 도광판 |
| PCT/KR2017/003757 WO2017222155A1 (ko) | 2016-06-20 | 2017-04-06 | 직하 방식 백라이트유닛용 도광판 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020160076553A KR20170142681A (ko) | 2016-06-20 | 2016-06-20 | 직하 방식 백라이트유닛용 도광판 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20170142681A true KR20170142681A (ko) | 2017-12-28 |
Family
ID=60783528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020160076553A Ceased KR20170142681A (ko) | 2016-06-20 | 2016-06-20 | 직하 방식 백라이트유닛용 도광판 |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20170142681A (ko) |
| WO (1) | WO2017222155A1 (ko) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112639358A (zh) * | 2018-09-03 | 2021-04-09 | 昕诺飞控股有限公司 | 反射器和用于形成反射器的起始片材 |
| US11314013B2 (en) | 2019-06-12 | 2022-04-26 | Samsung Display Co., Ltd. | Backlight unit and display device having the same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108845461B (zh) * | 2018-08-31 | 2023-06-30 | 武汉华星光电技术有限公司 | 背光模组及液晶显示装置 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080001775A (ko) * | 2006-06-30 | 2008-01-04 | 주식회사 한광옵토 | 도광판과 이를 이용한 백라이트 유닛 |
| KR101555340B1 (ko) * | 2008-11-05 | 2015-09-30 | 삼성디스플레이 주식회사 | 백라이트 어셈블리 및 이를 갖는 액정표시장치 |
| KR101597574B1 (ko) * | 2009-06-15 | 2016-02-25 | 엘지전자 주식회사 | Led 백라이트 유닛 및 이를 이용한 액정표시장치 |
| KR20120043600A (ko) * | 2010-10-26 | 2012-05-04 | 엘지디스플레이 주식회사 | 백 라이트 유닛 |
| JP2015115128A (ja) * | 2013-12-10 | 2015-06-22 | 株式会社Dsコーポレーション | 平面ディスプレイ装置のバックライト用反射板 |
-
2016
- 2016-06-20 KR KR1020160076553A patent/KR20170142681A/ko not_active Ceased
-
2017
- 2017-04-06 WO PCT/KR2017/003757 patent/WO2017222155A1/ko not_active Ceased
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112639358A (zh) * | 2018-09-03 | 2021-04-09 | 昕诺飞控股有限公司 | 反射器和用于形成反射器的起始片材 |
| CN112639358B (zh) * | 2018-09-03 | 2023-07-14 | 昕诺飞控股有限公司 | 反射器和用于形成反射器的起始片材 |
| US11314013B2 (en) | 2019-06-12 | 2022-04-26 | Samsung Display Co., Ltd. | Backlight unit and display device having the same |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017222155A1 (ko) | 2017-12-28 |
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