JP4994649B2 - カラー液晶表示装置のバックライト - Google Patents
カラー液晶表示装置のバックライト Download PDFInfo
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- JP4994649B2 JP4994649B2 JP2005349752A JP2005349752A JP4994649B2 JP 4994649 B2 JP4994649 B2 JP 4994649B2 JP 2005349752 A JP2005349752 A JP 2005349752A JP 2005349752 A JP2005349752 A JP 2005349752A JP 4994649 B2 JP4994649 B2 JP 4994649B2
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- light
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- guide plate
- light guide
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- 239000004973 liquid crystal related substance Substances 0.000 title claims description 35
- 239000003086 colorant Substances 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000010408 film Substances 0.000 description 19
- 238000010586 diagram Methods 0.000 description 7
- 230000007423 decrease Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000010409 thin film 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
- G02B6/0075—Arrangements of multiple light guides
- G02B6/0076—Stacked arrangements of multiple light guides of the same or different cross-sectional area
-
- 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]
-
- 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
- G02F1/133621—Illuminating devices providing coloured light
-
- 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
- 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
- G02F2203/00—Function characteristic
- G02F2203/34—Colour display without the use of colour mosaic filters
Description
2 ; LED(B)
3 : LED(G)
4 ; 第1の導光板
5 ; 第2の導光板
6 ; 区切り部
7 ; アライメントマーク
8 ; LCDパネル
9 ; 遮光膜
91; LED(R)からの光
92; LED(B)からの光
93; LED(G)からの光
10; 第1の側面
11; 第2の側面
12; 信号配線
13; Cs配線
14; Cs部
15; 配線クロス部
16; TFT
17; 画素電極
18; ゲート配線
101; 赤色光ガイド
102; 青色光ガイド
103; 緑色光ガイド
104; 偏光フィルタ
105; TFTアレイ
106; 液晶層
107; 偏光フィルタ
110; スキャナ
111; LED(R)
112; LED(B)
113; LED(G)
120; 変形部
Claims (8)
- 液晶層に対して赤色、青色及び緑色の3原色光を夫々対応する画素に直接入射させるカラー液晶表示装置のバックライトにおいて、
第1の導光板と、
この第1の導光板の第1の側面における第1の領域以外の領域に設けられた第1遮光膜を有し、前記第1の領域に前記3原色光のうちの第1の原色光を入射させる第1入射部と、
前記第1の導光板の前記第1の側面に対向する第2の側面における第2の領域以外の領域に設けられた第2遮光膜を有し、前記第2の領域に前記3原色光のうちの第2の原色光を入射させる第2入射部と、
前記第1の導光板の裏面における第3の領域以外の領域に設けられた第3遮光膜を有し、前記第3の領域に前記3原色光のうちの第3の原色光を入射させる第3入射部と
を有することを特徴とするカラー液晶表示装置のバックライト。 - 前記第1入射部は、前記第1の側面に設けられ前記第1の原色光を発光する第1発光ダイオードを有し、
前記第2入射部は、前記第2の側面に設けられ前記第2の原色光を発光する第2発光ダイオードを有し、
前記第3入射部は、前記第1の導光板の裏面に設けられた第2の導光板と、この第2の導光板に前記第3の原色光を入射する第3発光ダイオードとを有する
ことを特徴とする請求項1に記載のカラー液晶表示装置のバックライト。 - 前記第1の導光板は、前記第1の領域から入射した第1の原色光が占める領域と、前記第2の領域から入射した第2の原色光が占める領域と、前記第3の領域から入射した第3の原色光が占める領域とが、出射面からみて、帯状に相互に平行に交互に配置されていることを特徴とする請求項2に記載のカラー液晶表示装置のバックライト。
- 前記第1及び第2の導光板の表面にプリズムが形成され、前記第1及び第2の導光板からの出射光の指向性を高めていることを特徴とする請求項2又は請求項3に記載のカラー液晶表示装置のバックライト。
- 前記第1及び第2の導光板の表面に光を散乱させる凹凸が形成され、前記第1及び第2の導光板からの出射光を散乱させることを特徴とする請求項2又は請求項3に記載のカラー液晶表示装置のバックライト。
- 前記第1及び第2の導光板の表面に電気的信号により透過又は散乱の状態に変化させることができる散乱シートが設けられていることを特徴とする請求項2又は請求項3に記載のカラー液晶表示装置のバックライト。
- 液晶層と、この液晶層に対して赤色、青色及び緑色の3原色光を夫々対応する画素に直接入射させるバックライトとを有し、
前記バックライトは、
第1の導光板と、
この第1の導光板の第1の側面における第1の領域以外の領域に設けられた第1遮光膜を有し、前記第1の領域に前記3原色光のうちの第1の原色光を入射させる第1入射部と、
前記第1の導光板の前記第1の側面に対向する第2の側面における第2の領域以外の領域に設けられた第2遮光膜を有し、前記第2の領域に前記3原色光のうちの第2の原色光を入射させる第2入射部と、
前記第1の導光板の裏面における第3の領域以外の領域に設けられた第3遮光膜を有し、前記第3の領域に前記3原色光のうちの第3の原色光を入射させる第3入射部とを有する
ことを特徴とするカラー液晶表示装置。 - 前記第1入射部は、前記第1の側面に設けられ前記第1の原色光を発光する第1発光ダイオードを有し、
前記第2入射部は、前記第2の側面に設けられ前記第2の原色光を発光する第2発光ダイオードを有し、
前記第3入射部は、前記第1の導光板の裏面に設けられた第2の導光板と、この第2の導光板に前記第3の原色光を入射する第3発光ダイオードとを有する
ことを特徴とする請求項7に記載のカラー液晶表示装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005349752A JP4994649B2 (ja) | 2005-12-02 | 2005-12-02 | カラー液晶表示装置のバックライト |
US11/566,130 US7614758B2 (en) | 2005-12-02 | 2006-12-01 | Backlight for color liquid crystal display apparatus |
CNA2006101636965A CN1975537A (zh) | 2005-12-02 | 2006-12-04 | 一种用于彩色液晶显示装置的背光装置 |
US13/292,700 USRE45229E1 (en) | 2005-12-02 | 2011-11-09 | Backlight for color liquid crystal display apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005349752A JP4994649B2 (ja) | 2005-12-02 | 2005-12-02 | カラー液晶表示装置のバックライト |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007156024A JP2007156024A (ja) | 2007-06-21 |
JP4994649B2 true JP4994649B2 (ja) | 2012-08-08 |
Family
ID=38125700
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005349752A Expired - Fee Related JP4994649B2 (ja) | 2005-12-02 | 2005-12-02 | カラー液晶表示装置のバックライト |
Country Status (3)
Country | Link |
---|---|
US (2) | US7614758B2 (ja) |
JP (1) | JP4994649B2 (ja) |
CN (1) | CN1975537A (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4623138B2 (ja) * | 2008-05-21 | 2011-02-02 | ソニー株式会社 | 表示装置および電子機器 |
US7798699B2 (en) * | 2008-11-10 | 2010-09-21 | Nokia Corporation | Layered light guide with diffractive structures |
CN102122013B (zh) * | 2011-03-29 | 2012-06-13 | 湖北大学 | 一种平板液晶显示器的光波导型空间阵列分色输出导光板 |
CN104763950A (zh) * | 2015-05-04 | 2015-07-08 | 京东方科技集团股份有限公司 | 一种背光源、显示装置及显示装置的背光控制方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6329728A (ja) * | 1986-07-24 | 1988-02-08 | Alps Electric Co Ltd | 液晶表示装置 |
JPH10319384A (ja) * | 1997-05-21 | 1998-12-04 | Advanced Display:Kk | 液晶表示装置 |
TW514709B (en) * | 2000-05-04 | 2002-12-21 | Koninkl Philips Electronics Nv | Illumination system and display device |
US6768525B2 (en) | 2000-12-01 | 2004-07-27 | Lumileds Lighting U.S. Llc | Color isolated backlight for an LCD |
CN1268972C (zh) * | 2001-04-10 | 2006-08-09 | 皇家菲利浦电子有限公司 | 照明装置和显示设备 |
US6791636B2 (en) | 2001-05-10 | 2004-09-14 | Lumilecs Lighting U.S., Llc | Backlight for a color LCD |
JP3952859B2 (ja) * | 2002-05-29 | 2007-08-01 | 凸版印刷株式会社 | 導光シートとそれを用いたディスプレイ照明装置 |
EP1647044A2 (en) * | 2003-07-15 | 2006-04-19 | Philips Intellectual Property & Standards GmbH | Colour tunable lighting element |
JP4237083B2 (ja) * | 2004-03-12 | 2009-03-11 | Asti株式会社 | 液晶表示装置 |
-
2005
- 2005-12-02 JP JP2005349752A patent/JP4994649B2/ja not_active Expired - Fee Related
-
2006
- 2006-12-01 US US11/566,130 patent/US7614758B2/en not_active Ceased
- 2006-12-04 CN CNA2006101636965A patent/CN1975537A/zh active Pending
-
2011
- 2011-11-09 US US13/292,700 patent/USRE45229E1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
USRE45229E1 (en) | 2014-11-04 |
CN1975537A (zh) | 2007-06-06 |
US7614758B2 (en) | 2009-11-10 |
JP2007156024A (ja) | 2007-06-21 |
US20070132676A1 (en) | 2007-06-14 |
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