JP4854497B2 - 液晶表示装置 - Google Patents
液晶表示装置 Download PDFInfo
- Publication number
- JP4854497B2 JP4854497B2 JP2006343703A JP2006343703A JP4854497B2 JP 4854497 B2 JP4854497 B2 JP 4854497B2 JP 2006343703 A JP2006343703 A JP 2006343703A JP 2006343703 A JP2006343703 A JP 2006343703A JP 4854497 B2 JP4854497 B2 JP 4854497B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- guide plate
- angle
- liquid crystal
- light guide
- 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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- 239000004973 liquid crystal related substance Substances 0.000 title claims description 65
- 238000005286 illumination Methods 0.000 claims description 4
- 230000001678 irradiating effect Effects 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 description 10
- 239000000758 substrate Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000001902 propagating effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
Images
Classifications
-
- 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
- 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
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
-
- 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
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Description
Claims (6)
- 表示パネルと、該表示パネルに光を照射するバックライトと、
上記バックライトに設けられた発光素子と、
上記発光素子からの光が入射する導光板と、
上記導光板の上記表示パネルに対向するよう形成された上面と、
該上面に対向する底面と、
上記導光板の底面に形成された溝と、
上記底面から出射する光を反射する反射シートとを有し、
該溝で反射した第1の光と、上記溝から出光して上記反射シートで反射する第2の光とを備え、
上記上面から出射する光の角度の分布は、強度のピークが上記上面の法線より上記発光素子から離れる方向に傾いており、
上記溝は上記発光素子の近傍で上記底面に対する角度が大きくなっていることを特徴とする液晶表示装置。 - 上記発光素子はLEDであることを特徴とする請求項1に記載の液晶表示装置。
- 上記バックライトは導光板の上面にと表示パネルとの間に非対称プリズムシートを有することを特徴とする請求項1に記載の液晶表示装置。
- 表示パネルと、該表示パネルに光を照射する面状照明装置とを有し、
上記面状照明装置は、
複数の発光素子と、
上記発光素子からの光を上記液晶パネルに照射する導光板と、
上記導光板の上記液晶パネルに対向するよう形成された上面と、
該上面に対向する底面と、
該底面に設けられた傾斜面と、
該傾斜面で反射した第1の光と、上記傾斜面から出光する第2の光とを備え、
上記上面から出射する光の角度の分布は、強度のピークが上記上面の法線より上記発光素子から離れる方向に傾いており、
上記傾斜面と上記底面とのなす角度は、上記発光素子の近傍で大きくなり、
上記第2の光が上記導光板外で反射し、再度導光板を透過して上面から出射する第1の角度と、
上記第1の光が導光板の上面から出射する第2の角度との間には、上記傾斜面と上記底面とのなす角度以上の差を有することを特徴とする液晶表示装置。 - 上記発光素子はLEDであることを特徴とする請求項4に記載の液晶表示装置。
- 上記導光板の上面にと上記液晶パネルとの間に非対称プリズムシートを有することを特徴とする請求項4に記載の液晶表示装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006343703A JP4854497B2 (ja) | 2006-12-21 | 2006-12-21 | 液晶表示装置 |
US11/960,789 US7796213B2 (en) | 2006-12-21 | 2007-12-20 | Liquid crystal display device |
US12/877,658 US7999887B2 (en) | 2006-12-21 | 2010-09-08 | Liquid crystal display device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006343703A JP4854497B2 (ja) | 2006-12-21 | 2006-12-21 | 液晶表示装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008158014A JP2008158014A (ja) | 2008-07-10 |
JP4854497B2 true JP4854497B2 (ja) | 2012-01-18 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006343703A Active JP4854497B2 (ja) | 2006-12-21 | 2006-12-21 | 液晶表示装置 |
Country Status (2)
Country | Link |
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US (2) | US7796213B2 (ja) |
JP (1) | JP4854497B2 (ja) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5502289B2 (ja) * | 2008-05-14 | 2014-05-28 | 株式会社ジャパンディスプレイ | 液晶表示装置 |
US20100091518A1 (en) * | 2008-10-14 | 2010-04-15 | Chia-Ho Su | Anti-Glare LED Planar Light Source Adapted For Reading Lamp |
US8290318B2 (en) * | 2009-04-21 | 2012-10-16 | Svv Technology Innovations, Inc. | Light trapping optical cover |
WO2010124028A2 (en) * | 2009-04-21 | 2010-10-28 | Vasylyev Sergiy V | Light collection and illumination systems employing planar waveguide |
TWI407162B (zh) * | 2009-04-30 | 2013-09-01 | Coretronic Corp | 導光板及背光模組 |
TWI459088B (zh) * | 2009-11-27 | 2014-11-01 | Au Optronics Corp | 具導光板稜柱結構的背光模組及其製造方法 |
JP4998607B2 (ja) * | 2010-09-09 | 2012-08-15 | パナソニック株式会社 | Led照明装置 |
TWI408428B (zh) * | 2010-09-10 | 2013-09-11 | Entire Technology Co Ltd | 導光裝置與背光模組 |
CN103047553A (zh) * | 2011-10-17 | 2013-04-17 | 中国科学院福建物质结构研究所 | 一种高光效大功率led面板灯 |
KR101898471B1 (ko) * | 2012-03-12 | 2018-09-14 | 삼성디스플레이 주식회사 | 도광판 및 이를 포함하는 표시 장치 |
KR20140052819A (ko) * | 2012-10-24 | 2014-05-07 | 엘지디스플레이 주식회사 | 시야각 제어가 가능한 백라이트 유닛을 구비한 액정표시장치 |
CN104180241A (zh) * | 2013-05-22 | 2014-12-03 | 扬升照明股份有限公司 | 背光模块 |
US10088621B2 (en) | 2013-12-17 | 2018-10-02 | Samsung Display Co. Ltd. | Light guide panel, backlight unit, and liquid crystal display |
KR101551843B1 (ko) * | 2014-01-10 | 2015-09-09 | 주식회사 엘엠에스 | 적층형 광학시트모듈 |
US20170235039A1 (en) * | 2014-08-12 | 2017-08-17 | Glo Ab | Integrated Back Light Unit Including Non-Uniform Light Guide Unit |
KR102336685B1 (ko) * | 2015-01-20 | 2021-12-08 | 삼성디스플레이 주식회사 | 유기발광표시장치 및 그 구동방법 |
JP7100812B2 (ja) * | 2017-12-08 | 2022-07-14 | 日本精機株式会社 | 表示装置 |
CN109375311B (zh) * | 2018-12-26 | 2020-07-31 | 厦门天马微电子有限公司 | 一种导光板、导光板的制造方法及背光模组和显示装置 |
CN109633806B (zh) * | 2019-02-25 | 2021-11-30 | 京东方科技集团股份有限公司 | 背光模组及显示装置 |
US11460627B2 (en) * | 2019-12-17 | 2022-10-04 | Coretronic Corporation | Backlight module |
CN112987395B (zh) * | 2019-12-17 | 2024-03-08 | 中强光电股份有限公司 | 背光模块 |
CN113740953A (zh) * | 2020-05-27 | 2021-12-03 | 台湾扬昕股份有限公司 | 导光板及光源模块 |
WO2023057551A1 (de) | 2021-10-07 | 2023-04-13 | Behr-Hella Thermocontrol Gmbh | Anzeigevorrichtung, insbesondere für ein fahrzeug, zum anzeigen von information mit asymmetrischer hinterleuchtung |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09105804A (ja) * | 1995-10-13 | 1997-04-22 | Konica Corp | 光制御シート、面光源装置及び液晶表示装置 |
JP4131539B2 (ja) * | 2002-10-29 | 2008-08-13 | シチズン電子株式会社 | 面状光源およびその製造方法 |
JP2004192909A (ja) * | 2002-12-10 | 2004-07-08 | Sanyo Electric Co Ltd | 導光板及びこの導光板を用いた面光源装置並びにこれを用いた表示装置 |
JP4485999B2 (ja) * | 2004-07-09 | 2010-06-23 | スタンレー電気株式会社 | 面光源装置 |
JP2006202639A (ja) * | 2005-01-21 | 2006-08-03 | Sony Corp | バックライト装置 |
JP4671344B2 (ja) * | 2005-08-03 | 2011-04-13 | シチズン電子株式会社 | 導光板及びそれを用いたバックライト装置 |
JP2008066014A (ja) * | 2006-09-05 | 2008-03-21 | Enplas Corp | 導光板,面光源装置及び画像表示装置 |
-
2006
- 2006-12-21 JP JP2006343703A patent/JP4854497B2/ja active Active
-
2007
- 2007-12-20 US US11/960,789 patent/US7796213B2/en active Active
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2010
- 2010-09-08 US US12/877,658 patent/US7999887B2/en active Active
Also Published As
Publication number | Publication date |
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US20100328581A1 (en) | 2010-12-30 |
US20080165308A1 (en) | 2008-07-10 |
US7796213B2 (en) | 2010-09-14 |
JP2008158014A (ja) | 2008-07-10 |
US7999887B2 (en) | 2011-08-16 |
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