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1. WO2007139011 - PROJECTION TYPE DISPLAY APPARATUS

Publication Number WO/2007/139011
Publication Date 06.12.2007
International Application No. PCT/JP2007/060690
International Filing Date 25.05.2007
IPC
G03B 21/14 2006.01
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
21Projectors or projection-type viewers; Accessories therefor
14Details
G02B 26/00 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
26Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
G02B 26/08 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
26Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
08for controlling the direction of light
G02B 27/18 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27Optical systems or apparatus not provided for by any of the groups G02B1/-G02B26/119
18for optical projection, e.g. combination of mirror and condenser and objective
G02F 1/13 2006.01
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices 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
01for the control of the intensity, phase, polarisation or colour
13based on liquid crystals, e.g. single liquid crystal display cells
G02F 1/1335 2006.01
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices 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
01for the control of the intensity, phase, polarisation or colour
13based on liquid crystals, e.g. single liquid crystal display cells
133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
1333Constructional arrangements
1335Structural association of cells with optical devices, e.g. polarisers or reflectors
CPC
G02B 26/008
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
26Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating, modulating
007the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light
008in the form of devices for effecting sequential colour changes, e.g. colour wheels
G02F 2203/12
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
2203Function characteristic
12spatial light modulator
G03B 21/005
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
21Projectors or projection-type viewers; Accessories therefor
005Projectors using an electronic spatial light modulator but not peculiar thereto
G03B 21/2053
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
21Projectors or projection-type viewers; Accessories therefor
14Details
20Lamp housings
2053Intensity control of illuminating light
G03B 33/08
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
33Colour photography, other than mere exposure or projection of a colour film
08Sequential recording or projection
G09G 2310/0235
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2310Command of the display device
02Addressing, scanning or driving the display screen or processing steps related thereto
0235Field-sequential colour display
Applicants
  • パナソニック株式会社 PANASONIC CORPORATION [JP]/[JP] (AllExceptUS)
  • 和田充弘 WADA, Mitsuhiro (UsOnly)
  • 三戸真也 SANNOHE, Shinya (UsOnly)
  • 伏見吉正 FUSHIMI, Yoshimasa (UsOnly)
Inventors
  • 和田充弘 WADA, Mitsuhiro
  • 三戸真也 SANNOHE, Shinya
  • 伏見吉正 FUSHIMI, Yoshimasa
Agents
  • 特許業務法人池内・佐藤アンドパートナーズ IKEUCHI SATO & PARTNER PATENT ATTORNEYS
Priority Data
2006-14806129.05.2006JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) PROJECTION TYPE DISPLAY APPARATUS
(FR) APPAREIL D'AFFICHAGE DE TYPE À PROJECTION
(JA) 投写型表示装置
Abstract
(EN)
A projection type display apparatus comprises a rotational color filter (8) having color filters (8R, 8G, 8B) that transmit a white light to a specific color light emitted from a light emitting surface (6), a spatial light modulation element (11) disposed substantially in a conjugate relationship with the light emitting surface and modulating the incident light from the rotational color filter to perform an image display, and a controller (20) performing control so that the rotation of the rotational color filter is synchronized with the image display performed by the spatial light modulation element. In synchronization with passing of the borderlines (51, 52, 53), which are between the filters of each color of the rotational color filter, across each of partial light emitting regions (6a, 6b, 6c, ...) set by dividing the light emitting surface, the controller switches between the normal image display and the OFF-state in which light is blocked, for each of the partial display regions (14, 15, 16, ...) of the spatial light modulation element corresponding to each of the partial light emitting regions. The use efficiency of illumination light by the spatial light modulation element is increased, so that the color brightness of a projected image can be enhanced while sufficiently maintaining the effect of preventing the color mixture caused by adjacent color filters.
(FR)
La présente invention concerne un appareil d'affichage de type à projection qui comprend un filtre coloré rotatif (8) comportant des filtres colorés (8R, 8G, 8B) qui transmettent une lumière blanche à une lumière de couleur spécifique émise à partir d'une surface luminescente (6), un élément de modulation de lumière spatiale (11) disposé pratiquement dans une relation conjuguée avec la surface luminescente et modulant la lumière incidente provenant du filtre coloré rotatif afin d'effectuer un affichage d'image, et un contrôleur (20) effectuant une commande de manière à ce que la rotation du filtre coloré rotatif soit synchronisée avec l'affichage d'image effectué par l'élément de modulation de lumière spatiale. En synchronisation avec le passage de lignes de démarcation (51, 52, 53), qui se trouvent entre les filtres de chaque couleur du filtre coloré rotatif, à travers chacune des régions luminescentes partielles (6a, 6b, 6c, ...) établies en divisant la surface luminescente, le contrôleur effectue la commutation entre l'affichage d'image normal et l'état d'extinction dans lequel la lumière est bloquée, pour chacune des régions d'affichage partielles (14, 15, 16, ...) de l'élément de modulation de lumière spatiale correspondant à chacune des régions luminescentes partielles. Lerendement d'utilisation de la lumière d'éclairage par l'élément de modulation de lumière spatiale est augmenté, de manière à ce que la brillance de couleur d'une image projetée peut être améliorée tout en maintenant de manière suffisante l'effet de prévention du mélange de couleurs causé par des filtres colorés adjacents.
(JA)
 発光面6を出射する白色光から特定の色光を透過させる色フィルター8R、8G、8Bを有する回転型色フィルター8と、発光面と実質的に共役な関係に配置され、回転型色フィルターからの入射光を変調して画像表示を行う空間光変調素子11と、回転型色フィルターの回転と空間光変調素子による画像表示が同期するように制御する制御装置20とを備える。制御装置は、発光面を分割して設定された部分発光領域6a、6b、6c、・・・の各々に対する回転型色フィルターの各色フィルター間の境界線51、52、53の通過に同期させて、部分発光領域に各々対応する空間光変調素子の部分表示領域14、15、16、・・・毎に、通常の画像表示と光を遮断するOFF状態とを切り替える。空間光変調素子による照明光の利用効率が向上し、隣り合う色フィルターによる混色を防止する効果を十分に維持しながら、投写画像の色輝度を高めることができる。
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