JP2006114503A - 導光板及びバックライトモジュール - Google Patents
導光板及びバックライトモジュール Download PDFInfo
- Publication number
- JP2006114503A JP2006114503A JP2005299144A JP2005299144A JP2006114503A JP 2006114503 A JP2006114503 A JP 2006114503A JP 2005299144 A JP2005299144 A JP 2005299144A JP 2005299144 A JP2005299144 A JP 2005299144A JP 2006114503 A JP2006114503 A JP 2006114503A
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- Prior art keywords
- guide plate
- light guide
- light
- aspherical
- diffractive
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- 239000000463 material Substances 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 abstract description 11
- 238000009826 distribution Methods 0.000 abstract description 9
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 10
- 238000007639 printing Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009828 non-uniform distribution Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013585 weight reducing agent 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
- G02B6/0013—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
- G02B6/0016—Grooves, prisms, gratings, scattering particles or rough surfaces
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
- G02B5/1814—Diffraction gratings structurally combined with one or more further optical elements, e.g. lenses, mirrors, prisms or other diffraction gratings
-
- 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
- G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
- G02B6/0061—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to provide homogeneous light output intensity
-
- 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)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
【解決手段】本発明は、液晶ディスプレイに用いられる導光板及びバックライトモジュールに関する。本発明は少なくとも一つの回折部を有する入射面と、射出面と、複数の微細構成部を有する反射面と、を含む導光板を提供する。該導光板は、直接にLGPの入射面に回折光学部が形成されるので、全体のコンパクト性を高めたり、光の結合効率を高めて、従来の導光板における低い光エネルギーの利用率及び離散的な点光源の場合の不均一な光エネルギー分布という課題を解決することができる。本発明は更に該導光板を利用するバックライトモジュールを提供する。
【選択図】図7
Description
ここで、λ2=λ/n2,m=0、1、…,は非球面の回折部の輪帯数、n1は前記非球面の回折部の屈折率、Dは非球面の回折部の開口径と定義される。
f=3mm;
x:−3mm〜+3mm;
深さyの最大値:0.41mm;
n1=1.49;
n2=1;
波長(可視光):0.55μm
(1)入射面:f=3mm;x:−15mm〜+15mm;深さyの最大値:0.8841mm;n1=1.49;n2=1;波長(可視光):0.55μm;
(2)射出面:f=10mm;x:−15mm〜+15mm;深さyの最大値:0.6316mm;n1=1.49;n2=1;波長(可視光):0.55μm
51、91 入射面
52、92 反射面
53、93 出射面
70 光源
521 微細構成部
512、521、532、612、912 非球面の回折部
60 平板型の導光板
80 バックライトモジュール
82 反射シート
84 拡散シート
86 光沢シート
90 楔型の導光板
Claims (10)
- 入射面と、射出面と、複数の微細構成部を有する反射面と、を含む導光板において、
前記入射面は少なくとも一つの回折部を有することを特徴とする導光板。 - 前記回折部は非球面とされることを特徴とする、請求項1に記載の導光板。
- 前記回折部は導光板の外部へ突出することを特徴とする、請求項1〜4に記載の導光板。
- 前記回折部は導光板の内部へ突出することを特徴とする、請求項1〜4に記載の導光板。
- 前記射出面は少なくとも一つの第二回折部を有することを特徴とする、請求項1又は2に記載の導光板。
- 前記第二回折部は非球面とされることを特徴とする、請求項7に記載の導光板。
- 前記導光板は平板又は楔形の形状に構成されることを特徴とする、請求項1に記載の導光板。
- 導光板及びその側面に配置された光源を含み、
前記導光板は入射面と、射出面と、複数の微細構成部を有する反射面と、を含む、バックライトモジュールにおいて、
前記入射面は少なくとも一つの回折部を含むことを特徴とするバックライトモジュール。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB2004100518712A CN100485482C (zh) | 2004-10-14 | 2004-10-14 | 导光板和背光模组 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006114503A true JP2006114503A (ja) | 2006-04-27 |
JP4146466B2 JP4146466B2 (ja) | 2008-09-10 |
Family
ID=36180459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005299144A Active JP4146466B2 (ja) | 2004-10-14 | 2005-10-13 | 導光板及びバックライトモジュール |
Country Status (3)
Country | Link |
---|---|
US (1) | US7370999B2 (ja) |
JP (1) | JP4146466B2 (ja) |
CN (1) | CN100485482C (ja) |
Cited By (4)
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KR100892805B1 (ko) * | 2006-08-17 | 2009-04-10 | 엡슨 이미징 디바이스 가부시키가이샤 | 조명 장치, 액정 장치 및 전자 기기 |
JP2009129792A (ja) * | 2007-11-27 | 2009-06-11 | Minebea Co Ltd | 面状照明装置 |
JP2013161791A (ja) * | 2012-02-03 | 2013-08-19 | Ctx Opto Electronics Corp | 光源モジュール |
WO2014196235A1 (ja) * | 2013-06-07 | 2014-12-11 | シャープ株式会社 | 照明装置、表示装置、及びテレビ受信装置 |
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CN100454101C (zh) * | 2005-09-21 | 2009-01-21 | 鸿富锦精密工业(深圳)有限公司 | 导光板 |
JP4600269B2 (ja) * | 2005-12-21 | 2010-12-15 | カシオ計算機株式会社 | 液晶表示装置 |
KR20070077275A (ko) * | 2006-01-23 | 2007-07-26 | 삼성전자주식회사 | 광 가이드 유닛 및 이를 갖는 백라이트 어셈블리 |
TWM294655U (en) * | 2006-01-27 | 2006-07-21 | Taiwan Nano Electro Opt Tech | Light-adjusting structure of light guide |
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TWI301533B (en) | 2006-08-14 | 2008-10-01 | Ind Tech Res Inst | Optical diffusion module |
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JP2009058846A (ja) * | 2007-09-03 | 2009-03-19 | Hitachi Displays Ltd | 液晶表示装置 |
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2004
- 2004-10-14 CN CNB2004100518712A patent/CN100485482C/zh active Active
-
2005
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- 2005-10-13 JP JP2005299144A patent/JP4146466B2/ja active Active
Cited By (6)
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KR100892805B1 (ko) * | 2006-08-17 | 2009-04-10 | 엡슨 이미징 디바이스 가부시키가이샤 | 조명 장치, 액정 장치 및 전자 기기 |
US8488080B2 (en) | 2006-08-17 | 2013-07-16 | Japan Display West, Inc. | Illumination system, liquid crystal device, and electronic device |
JP2009129792A (ja) * | 2007-11-27 | 2009-06-11 | Minebea Co Ltd | 面状照明装置 |
JP2013161791A (ja) * | 2012-02-03 | 2013-08-19 | Ctx Opto Electronics Corp | 光源モジュール |
US9075175B2 (en) | 2012-02-03 | 2015-07-07 | Coretronic Corporation | Light source module |
WO2014196235A1 (ja) * | 2013-06-07 | 2014-12-11 | シャープ株式会社 | 照明装置、表示装置、及びテレビ受信装置 |
Also Published As
Publication number | Publication date |
---|---|
US7370999B2 (en) | 2008-05-13 |
US20060082884A1 (en) | 2006-04-20 |
CN100485482C (zh) | 2009-05-06 |
CN1760724A (zh) | 2006-04-19 |
JP4146466B2 (ja) | 2008-09-10 |
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