JP6087508B2 - バックライトユニット及びそれを用いたディスプレイ装置 - Google Patents
バックライトユニット及びそれを用いたディスプレイ装置 Download PDFInfo
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- JP6087508B2 JP6087508B2 JP2012042486A JP2012042486A JP6087508B2 JP 6087508 B2 JP6087508 B2 JP 6087508B2 JP 2012042486 A JP2012042486 A JP 2012042486A JP 2012042486 A JP2012042486 A JP 2012042486A JP 6087508 B2 JP6087508 B2 JP 6087508B2
- Authority
- JP
- Japan
- Prior art keywords
- groove
- guide plate
- light guide
- light
- light source
- 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.)
- Expired - Fee Related
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Classifications
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- 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
- G02B6/0075—Arrangements of multiple light guides
- G02B6/0078—Side-by-side arrangements, e.g. for large area displays
-
- 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
-
- 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
- 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
- G02B6/0066—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
- 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]
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)
- Planar Illumination Modules (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Liquid Crystal (AREA)
Description
図3Aに示すように、導光板20の上部に形成される第1溝70の一端は、第2溝24の側面24aから延びる延長線上に位置してもよい。
図4Aに示すように、導光板20の上部に形成される第1溝70は、断面上、一点P1で会う第1傾斜面70a及び第2傾斜面70bを含むことができる。
第1角度と第2角度が互いに異なる場合、第1角度θ1は第2角度θ2より大きくてよい。
Claims (17)
- 第1、第2及び第3溝を有する導光板と、
前記第2溝に配置された光源モジュールと、
前記導光板の下部面、並びに、前記第2溝の側面であって前記光源モジュールの光源から放出される光が入射する第1側面と対向する第2側面、及び、前記第2溝の底面に配置されたリフレクタと、を備え、
前記第1溝は前記導光板の上部に形成され、
前記第2溝は前記導光板の下部に形成され、
前記第3溝は、互いに隣接する前記第1溝の間に配置され、
前記導光板を上からみた場合に、
前記第1溝は、前記光源モジュールの光源の間の領域からみて前記光が進む光線方向に配置されるとともに前記光線方向において前記光源と重なり合わず、且つ、
前記第3溝は、前記光源モジュールの各光源からみて前記光線方向に配置され、
前記第3溝は、前記第2溝の前記第1側面を含む平面から一定間隔離れて配置されている照明システム。 - 前記第1溝の断面は、一点で会う第1傾斜面及び第2傾斜面を含む、請求項1に記載の照明システム。
- 前記第1溝の断面は、第1傾斜面と第2傾斜面を有し、
前記第1、第2傾斜面の間に前記導光板の上部面と平行な平面が配置されている、請求項1又は2に記載の照明システム。 - 前記第1溝の深さ値は0.1〜0.5mmである、請求項1乃至3のいずれかに記載の照明システム。
- 前記第1溝の最大深さ値は、前記導光板の上部面から前記第2溝までの距離値より小さい、請求項1乃至4のいずれかに記載の照明システム。
- 前記第1溝の長さは、第1方向に沿う前記第1溝の両端の間の距離であり、前記第1溝の幅は、前記第1方向と垂直な第2方向に沿う前記第1溝の両端の間の距離であり、前記第1溝の長さと幅は、前記光源モジュールの光源の間の距離より小さい、請求項1乃至5のいずれかに記載の照明システム。
- 前記第1溝の長さは3〜7mmであり、前記第1溝の幅は1〜4mmである、請求項1乃至6のいずれかに記載の照明システム。
- 前記第1傾斜面は、第1曲率を有する凹んだ曲面であり、前記第2傾斜面は、第2曲率を有する凹んだ曲面であり、前記第1曲率と前記第2曲率は互いに異なる、請求項2に記載の照明システム。
- 前記第1傾斜面は、前記導光板の上部面に対して第1角度で傾斜した平面であり、前記第2傾斜面は、前記導光板の上部面に対して第2角度で傾斜した平面であり、前記第1角度と第2角度は互いに異なる、請求項2に記載の照明システム。
- 前記第1、第2傾斜面のいずれか一方は、所定曲率を有する凹んだ曲面であり、いずれか他方は、前記導光板の上部面に対して所定角度で傾斜した平面である、請求項2に記載の照明システム。
- 前記第2溝の前記第1側面は、前記第2溝の前記底面に垂直であり、
前記第2溝の前記第2側面は、前記第2溝の前記底面に対して傾斜する、請求項1乃至10のいずれかに記載の照明システム。 - 前記第2溝の高さと前記導光板の厚さとの比は、0.3〜0.7:1である、請求項1乃至11のいずれかに記載の照明システム。
- 前記第3溝の幅は、前記第1溝の幅よりも小さい、請求項12に記載の照明システム。
- 前記第3溝の長さは、前記第1溝の長さより小さい、請求項12又は13のいずれかに記載の照明システム。
- 前記第3溝の深さは、前記第1溝の深さより小さい、請求項12乃至14のいずれかに記載の照明システム。
- 前記第3溝と前記第1溝の深さの比は、1:1.5〜3である、請求項12乃至15のいずれかに記載の照明システム。
- 前記第3溝の長さは、前記光源モジュールの各光源の長さより大きい、請求項12乃至16のいずれかに記載の照明システム。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2011-0070376 | 2011-07-15 | ||
KR1020110070376A KR101830718B1 (ko) | 2011-07-15 | 2011-07-15 | 디스플레이 장치 |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2013026213A JP2013026213A (ja) | 2013-02-04 |
JP2013026213A5 JP2013026213A5 (ja) | 2015-04-16 |
JP6087508B2 true JP6087508B2 (ja) | 2017-03-01 |
Family
ID=45656364
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2012042486A Expired - Fee Related JP6087508B2 (ja) | 2011-07-15 | 2012-02-28 | バックライトユニット及びそれを用いたディスプレイ装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20130016521A1 (ja) |
EP (1) | EP2546685B1 (ja) |
JP (1) | JP6087508B2 (ja) |
KR (1) | KR101830718B1 (ja) |
CN (1) | CN102878477B (ja) |
TW (1) | TWI570482B (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN104006337A (zh) * | 2014-06-17 | 2014-08-27 | 深圳市华星光电技术有限公司 | 背光模组 |
US20150362653A1 (en) * | 2014-06-17 | 2015-12-17 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Backlight module |
KR101710520B1 (ko) * | 2015-10-02 | 2017-02-27 | 한국과학기술원 | 로컬 디밍이 가능한 백라이트 유닛 |
KR20210015342A (ko) * | 2019-08-01 | 2021-02-10 | 엘지이노텍 주식회사 | 조명 장치 |
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JP2004319340A (ja) * | 2003-04-17 | 2004-11-11 | Kawaguchiko Seimitsu Co Ltd | バックライトユニット |
TWI257018B (en) * | 2004-07-07 | 2006-06-21 | Epistar Corp | A back light module with independent light source |
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-
2011
- 2011-07-15 KR KR1020110070376A patent/KR101830718B1/ko active IP Right Grant
-
2012
- 2012-02-21 US US13/400,943 patent/US20130016521A1/en not_active Abandoned
- 2012-02-21 TW TW101105618A patent/TWI570482B/zh not_active IP Right Cessation
- 2012-02-22 EP EP12156445.4A patent/EP2546685B1/en not_active Not-in-force
- 2012-02-28 JP JP2012042486A patent/JP6087508B2/ja not_active Expired - Fee Related
- 2012-03-15 CN CN201210068387.5A patent/CN102878477B/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
TW201303449A (zh) | 2013-01-16 |
KR101830718B1 (ko) | 2018-02-22 |
JP2013026213A (ja) | 2013-02-04 |
US20130016521A1 (en) | 2013-01-17 |
CN102878477B (zh) | 2017-05-31 |
EP2546685B1 (en) | 2018-11-28 |
CN102878477A (zh) | 2013-01-16 |
TWI570482B (zh) | 2017-02-11 |
KR20130009342A (ko) | 2013-01-23 |
EP2546685A1 (en) | 2013-01-16 |
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