JP4673676B2 - バックライト装置 - Google Patents
バックライト装置 Download PDFInfo
- Publication number
- JP4673676B2 JP4673676B2 JP2005171699A JP2005171699A JP4673676B2 JP 4673676 B2 JP4673676 B2 JP 4673676B2 JP 2005171699 A JP2005171699 A JP 2005171699A JP 2005171699 A JP2005171699 A JP 2005171699A JP 4673676 B2 JP4673676 B2 JP 4673676B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- guide plate
- reflective film
- light guide
- film
- 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
Links
- 238000001579 optical reflectometry Methods 0.000 claims description 12
- 238000010030 laminating Methods 0.000 claims description 3
- 238000003475 lamination Methods 0.000 claims description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 10
- 230000003287 optical effect Effects 0.000 description 8
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 210000002858 crystal cell Anatomy 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- -1 acryl Chemical group 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 238000007740 vapor deposition Methods 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
- G02B6/005—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
- G02B6/0035—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
Description
本発明の目的は上記従来技術における課題に鑑みなされたものであり、バックライトの長さ方向、幅方向における光の指向性を簡単な構造で制御し、その指向性を狭めことによって、光の利用効率を向上させるとともに、輝度を上昇させさせたバックライト装置を提供することにある。
図1、図2に示すように、本実施例におけるバックライト装置20は、筐体1の内部に透明なプラスチック部材よりなる略直方体形状をした導光板12と、導光板12の入光部となる側面12aに4個の光源としての発光ダイオード(以下、LEDと記載する)3が設置されている。このLED3から照射された光が導光板12の側面12aから導光板12の内部に入射し、導光板12の内部で全反射を繰り返しながら導光される。
3 LED
4 拡散シート
11 透明部材
12 導光板
12a 導光板の入光部である側面
12b 導光板の反射面である下面
12c 導光板の出射面である上面
12d 導光板の側面
13 反射膜
13a 反射膜の積層平面
15 反射フィルム
15a 反射フィルムの平面
16 バックライトの長さ方向の指向性を示す曲線
17 導光板のプリズム
18 バックライトの幅方向の指向性を示す曲線
20 バックライト装置
Claims (3)
- 導光板と、該導光板の側面を入光面とし該入光面に近接配置された発光ダイオードと、前記導光板の出射面に隙間を設けて近接配置された選択的光反射性を有する反射フィルムとを備え、該反射フィルムは光反射性を有する反射膜と透光性を有する透光部材とを交互に繰り返し積層してなるフィルム状部材からなり、前記反射膜の積層平面が前記反射フィルムの平面に対して前記入光面から前記入光面と対向する側面に向かう方向に向かい前記反射フィルムの平面から離れる方向に傾斜する所定の傾斜角を有し、前記反射フィルムが前記出射面から出射した前記導光板の幅方向への広がりの小さい光を前記反射膜で反射して前記透光部材を透過して上面方向へ向かわせ、前記導光板の幅方向への広がりの大きい光を反射膜によって導光板側に反射させる選択的光反射性を有し、前記導光板の下面に前記発光ダイオードからの光を前記反射フィルム面へ反射させるためのプリズムを有することを特徴とするバックライト装置。
- 前記反射フィルムは前記反射膜と前記透光部材とが一定の間隔で積層されてなることを特徴とする請求項1に記載のバックライト装置。
- 前記反射フィルムにおける前記反射膜と前記透光部材との積層方向が前記導光板の入光面から該入光面と対向する側面に向かう方向と略一致することを特徴とする請求項1または請求項2に記載のバックライト装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005171699A JP4673676B2 (ja) | 2005-06-10 | 2005-06-10 | バックライト装置 |
DE102006026236.0A DE102006026236B4 (de) | 2005-06-10 | 2006-06-06 | Hintergrundbeleuchtungseinheit |
US11/450,085 US7703969B2 (en) | 2005-06-10 | 2006-06-09 | Backlight unit having multilayer light deflecting film |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005171699A JP4673676B2 (ja) | 2005-06-10 | 2005-06-10 | バックライト装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006344565A JP2006344565A (ja) | 2006-12-21 |
JP4673676B2 true JP4673676B2 (ja) | 2011-04-20 |
Family
ID=37589261
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005171699A Expired - Fee Related JP4673676B2 (ja) | 2005-06-10 | 2005-06-10 | バックライト装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7703969B2 (ja) |
JP (1) | JP4673676B2 (ja) |
DE (1) | DE102006026236B4 (ja) |
Families Citing this family (29)
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---|---|---|---|---|
US8867136B2 (en) * | 2008-05-09 | 2014-10-21 | Pioneer Corporation | Floating image display device |
WO2013022606A1 (en) * | 2011-08-05 | 2013-02-14 | Rambus Inc. | Lighting assembly with configurable illumination profile |
US9052414B2 (en) | 2012-02-07 | 2015-06-09 | Microsoft Technology Licensing, Llc | Virtual image device |
US9354748B2 (en) | 2012-02-13 | 2016-05-31 | Microsoft Technology Licensing, Llc | Optical stylus interaction |
US20130222353A1 (en) * | 2012-02-29 | 2013-08-29 | Microsoft Corporation | Prism illumination-optic |
US8749529B2 (en) | 2012-03-01 | 2014-06-10 | Microsoft Corporation | Sensor-in-pixel display system with near infrared filter |
US9075566B2 (en) | 2012-03-02 | 2015-07-07 | Microsoft Technoogy Licensing, LLC | Flexible hinge spine |
US9870066B2 (en) | 2012-03-02 | 2018-01-16 | Microsoft Technology Licensing, Llc | Method of manufacturing an input device |
US8873227B2 (en) | 2012-03-02 | 2014-10-28 | Microsoft Corporation | Flexible hinge support layer |
US9460029B2 (en) | 2012-03-02 | 2016-10-04 | Microsoft Technology Licensing, Llc | Pressure sensitive keys |
US20130300590A1 (en) | 2012-05-14 | 2013-11-14 | Paul Henry Dietz | Audio Feedback |
US10031556B2 (en) | 2012-06-08 | 2018-07-24 | Microsoft Technology Licensing, Llc | User experience adaptation |
US9019615B2 (en) | 2012-06-12 | 2015-04-28 | Microsoft Technology Licensing, Llc | Wide field-of-view virtual image projector |
US9355345B2 (en) | 2012-07-23 | 2016-05-31 | Microsoft Technology Licensing, Llc | Transparent tags with encoded data |
US8964379B2 (en) | 2012-08-20 | 2015-02-24 | Microsoft Corporation | Switchable magnetic lock |
US9207383B2 (en) | 2012-08-31 | 2015-12-08 | Lg Display Co., Ltd. | Backlight unit and liquid crystal display device using the same |
US9152173B2 (en) | 2012-10-09 | 2015-10-06 | Microsoft Technology Licensing, Llc | Transparent display device |
KR20140066522A (ko) * | 2012-11-23 | 2014-06-02 | 삼성디스플레이 주식회사 | 백라이트 유닛 및 이를 포함하는 표시 장치 |
US9513748B2 (en) | 2012-12-13 | 2016-12-06 | Microsoft Technology Licensing, Llc | Combined display panel circuit |
US9638835B2 (en) | 2013-03-05 | 2017-05-02 | Microsoft Technology Licensing, Llc | Asymmetric aberration correcting lens |
US9106887B1 (en) * | 2014-03-13 | 2015-08-11 | Wowza Media Systems, LLC | Adjusting encoding parameters at a mobile device based on a change in available network bandwidth |
US10120420B2 (en) | 2014-03-21 | 2018-11-06 | Microsoft Technology Licensing, Llc | Lockable display and techniques enabling use of lockable displays |
US20150354272A1 (en) | 2014-06-10 | 2015-12-10 | Sergiy Vasylyev | Light-redirecting retractable window covering |
US20160025288A1 (en) | 2014-07-25 | 2016-01-28 | Sergiy Vasylyev | Light directing sheeting and systems employing the same |
US10324733B2 (en) | 2014-07-30 | 2019-06-18 | Microsoft Technology Licensing, Llc | Shutdown notifications |
CN104503129B (zh) * | 2014-12-30 | 2018-02-13 | 京东方科技集团股份有限公司 | 一种光学模组和反射型显示装置 |
CN104964213B (zh) * | 2015-07-14 | 2018-06-08 | 武汉华星光电技术有限公司 | 背光模组及液晶显示器 |
JP2017032673A (ja) * | 2015-07-30 | 2017-02-09 | 日本電気硝子株式会社 | 導光板及びこれを用いた積層導光板 |
KR20170104715A (ko) * | 2016-03-07 | 2017-09-18 | 삼성디스플레이 주식회사 | 백라이트 유닛 및 이를 포함하는 표시 장치 |
Citations (2)
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JP2000113707A (ja) * | 1998-10-05 | 2000-04-21 | Casio Comput Co Ltd | 面光源装置 |
JP2004185020A (ja) * | 1994-11-08 | 2004-07-02 | Dainippon Printing Co Ltd | 液晶表示装置用平行光源及びそれを用いた液晶表示装置 |
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JP2679642B2 (ja) * | 1994-09-01 | 1997-11-19 | 日本電気株式会社 | 透過型液晶表示装置 |
US6210644B1 (en) * | 1998-04-23 | 2001-04-03 | The Procter & Gamble Company | Slatted collimator |
JP2001215501A (ja) * | 2000-02-02 | 2001-08-10 | Fuji Photo Film Co Ltd | 照明装置および液晶表示装置 |
US7133019B2 (en) * | 2000-04-21 | 2006-11-07 | Matsushita Electric Industrial Co., Ltd. | Illuminator, image display comprising the same, liquid crystal television, liquid crystal monitor, and liquid crystal information terminal |
JP2002042529A (ja) | 2000-07-24 | 2002-02-08 | Sanyo Electric Co Ltd | 面照明装置 |
JP2002124112A (ja) * | 2000-08-07 | 2002-04-26 | Sharp Corp | バックライト及び液晶表示装置 |
JP3956351B2 (ja) * | 2002-03-28 | 2007-08-08 | シチズン電子株式会社 | 導光板 |
JP2005044744A (ja) * | 2003-07-25 | 2005-02-17 | Clariant Internatl Ltd | 面光源装置 |
JP2005275262A (ja) * | 2004-03-26 | 2005-10-06 | Denso Corp | 車載用液晶表示装置 |
US20070121325A1 (en) * | 2005-11-30 | 2007-05-31 | Benjamin Barber | Light directing louver |
-
2005
- 2005-06-10 JP JP2005171699A patent/JP4673676B2/ja not_active Expired - Fee Related
-
2006
- 2006-06-06 DE DE102006026236.0A patent/DE102006026236B4/de not_active Expired - Fee Related
- 2006-06-09 US US11/450,085 patent/US7703969B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2004185020A (ja) * | 1994-11-08 | 2004-07-02 | Dainippon Printing Co Ltd | 液晶表示装置用平行光源及びそれを用いた液晶表示装置 |
JP2000113707A (ja) * | 1998-10-05 | 2000-04-21 | Casio Comput Co Ltd | 面光源装置 |
Also Published As
Publication number | Publication date |
---|---|
DE102006026236B4 (de) | 2016-07-21 |
JP2006344565A (ja) | 2006-12-21 |
US20070002587A1 (en) | 2007-01-04 |
US7703969B2 (en) | 2010-04-27 |
DE102006026236A1 (de) | 2007-02-08 |
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