JP4584916B2 - フラットパネル表示装置用走査式バックライト - Google Patents
フラットパネル表示装置用走査式バックライト Download PDFInfo
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- JP4584916B2 JP4584916B2 JP2006508395A JP2006508395A JP4584916B2 JP 4584916 B2 JP4584916 B2 JP 4584916B2 JP 2006508395 A JP2006508395 A JP 2006508395A JP 2006508395 A JP2006508395 A JP 2006508395A JP 4584916 B2 JP4584916 B2 JP 4584916B2
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- Prior art keywords
- display device
- light
- waveguide
- wedge
- liquid crystal
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- 239000004973 liquid crystal related substance Substances 0.000 claims description 31
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000003491 array Methods 0.000 claims description 2
- 238000005286 illumination Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
Images
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
- G02B6/0013—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
-
- 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
-
- 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
- G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
- G02B6/0031—Reflecting element, sheet or layer
-
- 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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
- G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
-
- 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
- G02F1/133601—Illuminating devices for spatial active dimming
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0235—Field-sequential colour display
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/024—Scrolling of light from the illumination source over the display in combination with the scanning of the display screen
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
図2に示すように、全部透明で、散乱性含有物がない、概して平らな長方形の楔形の導波管1は、円筒形ミラー5の焦点面内にある線形LED配列2,3および4によって照射される。この場合、導波管1は、表示装置の基部縁に厚端を有する。各配列は、おそらく、30〜100cmかもしれない表示装置の幅にかけて広がる、直径が約5mmの一列に並んだLEDからなる。
Claims (9)
- 表示装置と同じ広がりをもつテーパ式厚板導波管(1)と、
前記導波管の正面において、投入される光の面外角度に応じた位置から出射するように、前記導波管の楔内に光を投入するように配置される光源(2〜4)と、
前記楔内へ投入される光を走査する手段とを備えるフラットパネル表示装置用照明器具であって、
走査サイクルに亘って前記表示装置の様々な領域上に光が出現するように、前記の走査手段は前記導波管の表面に様々な角度で光を投入するように構成されていることを特徴とする照明器具。 - 前記光源はアドレス指定可能な素子列からなり、前記走査手段はこれらの列をアドレス指定する回路を含むことを特徴とする請求項1に記載の照明器具。
- 前記素子からの光が円筒形ミラー(5)により前記表示装置用導波管内に視準されることを特徴とする請求項2に記載の照明器具。
- 前記素子からの光が、さらに別の導波管(8)により前記表示装置用導波管内に視準されることを特徴とする請求項2に記載の照明器具。
- 前記素子がLEDであることを特徴とする請求項2乃至4の何れか一項に記載の照明器具。
- さらに、前記表示装置用導波管に対して垂線方向に出射光を誘導するシート(6)を含む請求項1乃至5の何れか一項に記載の照明器具。
- バックライトとして使用される請求項1乃至6の何れか一項に記載の照明器具と、前記表示装置用導波管を覆うフラットパネル変調器とを備える表示装置。
- 前記変調器が液晶表示装置であることを特徴とする請求項7に記載の表示装置。
- 前記走査アドレス指定回路が前記液晶表示装置の列アドレス指定回路と同期されることを特徴とする請求項2と8に記載の表示装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0313044.0A GB0313044D0 (en) | 2003-06-06 | 2003-06-06 | Flat panel scanning illuminator |
PCT/GB2004/002386 WO2004109380A1 (en) | 2003-06-06 | 2004-06-04 | Scanning backlight for flat-panel display |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2006527389A JP2006527389A (ja) | 2006-11-30 |
JP2006527389A5 JP2006527389A5 (ja) | 2007-07-19 |
JP4584916B2 true JP4584916B2 (ja) | 2010-11-24 |
Family
ID=9959463
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006508395A Expired - Fee Related JP4584916B2 (ja) | 2003-06-06 | 2004-06-04 | フラットパネル表示装置用走査式バックライト |
Country Status (7)
Country | Link |
---|---|
US (2) | US7944428B2 (ja) |
EP (1) | EP1634119B1 (ja) |
JP (1) | JP4584916B2 (ja) |
KR (1) | KR101064798B1 (ja) |
CN (1) | CN100386687C (ja) |
GB (1) | GB0313044D0 (ja) |
WO (1) | WO2004109380A1 (ja) |
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CN1802598A (zh) | 2006-07-12 |
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