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1. WO2007088655 - ILLUMINATION DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE

Publication Number WO/2007/088655
Publication Date 09.08.2007
International Application No. PCT/JP2006/319343
International Filing Date 28.09.2006
IPC
F21S 2/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
2Systems of lighting devices, not provided for in main groups F21S4/-F21S10/113
G02F 1/13357 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
13357Illuminating devices
F21Y 101/02 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21LIGHTING
YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V124
101Point-like light sources
02Miniature, e.g. light emitting diodes (LED)
CPC
G02F 1/133601
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; ; Manufacturing methods
1335Structural association of cells with optical devices, e.g. polarisers or reflectors
1336Illuminating devices
133601for spatial active dimming
G02F 1/133603
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; ; Manufacturing methods
1335Structural association of cells with optical devices, e.g. polarisers or reflectors
1336Illuminating devices
133602Direct backlight
133603with LEDs
G02F 1/133606
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; ; Manufacturing methods
1335Structural association of cells with optical devices, e.g. polarisers or reflectors
1336Illuminating devices
133602Direct backlight
133606including a specially adapted diffusing, scattering or light controlling members
G02F 1/133608
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; ; Manufacturing methods
1335Structural association of cells with optical devices, e.g. polarisers or reflectors
1336Illuminating devices
133602Direct backlight
133608including particular frames or supporting means
Applicants
  • シャープ株式会社 SHARP KABUSHIKI KAISHA [JP]/[JP] (AllExceptUS)
  • 増田 岳志 MASUDA, Takeshi (UsOnly)
  • 田中 敦幸 TANAKA, Atsuyuki (UsOnly)
  • 角田 行広 SUMIDA, Yukihiro (UsOnly)
Inventors
  • 増田 岳志 MASUDA, Takeshi
  • 田中 敦幸 TANAKA, Atsuyuki
  • 角田 行広 SUMIDA, Yukihiro
Agents
  • 特許業務法人原謙三国際特許事務所 HARAKENZO WORLD PATENT & TRADEMARK
Priority Data
2006-02775303.02.2006JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) ILLUMINATION DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE
(FR) DISPOSITIF D'ECLAIRAGE ET DISPOSITIF D'AFFICHAGE A CRISTAUX LIQUIDES
(JA) 照明装置及び液晶表示装置
Abstract
(EN)
In a backlight device (3) placed layered on a liquid crystal panel (2), light sources (11) are partitioned into illumination regions (15) by partition walls (12), a first light diffusion member (13) is placed over the light source, and second light diffusion member (14) is layered on the first light diffusion member (13). The first light diffusion member (13) is placed such that a light incident surface (13a), into which light from each light source (11) enters, is located at a position that is higher than the light sources (11) and at the same height as or lower than the vertexes of the partition walls (11). The second light diffusion member (14) is placed over the first light diffusion member (13) with a gap in between and with a light incident surface (14a) placed at a position higher than the vertexes of the partition walls (12). In the backlight device that is partitioned into the illumination regions and where the light sources are arranged in each of the illumination regions, each illumination region can be independently controlled without reducing performance as the illumination device.
(FR)
La présente invention concerne un dispositif de rétro-éclairage (3) disposé en couches sur un panneau à cristaux liquides (2), dans lequel des sources lumineuses (11) sont réparties dans des zones d'éclairage (15) grâce à des parois de séparation (12), un premier élément de diffusion de lumière (13) est placé sur la source lumineuse et un second élément de diffusion de lumière (14) est disposé en couche sur le premier élément de diffusion de lumière (13). Le premier élément de diffusion de lumière (13) est placé de telle sorte que la surface incidente de lumière (13a), dans laquelle entre la lumière provenant de chaque source lumineuse (11), est située à une position qui est supérieure à celle des sources lumineuses (11) et à la même hauteur que les sommets des parois de séparation (12) ou à une hauteur inférieure à celles-ci. Le second élément de diffusion de lumière (14) est placé au-dessus du premier élément de diffusion de lumière (13), un intervalle se trouvant entre les deux et une surface incidente de lumière (14a) étant placée à une position supérieure à celle des sommets des parois de séparation (12). Dans le dispositif de rétro-éclairage qui est réparti dans les zones d'éclairage et où les sources lumineuses sont disposées dans chacune des zones d'éclairage, chaque zone d'éclairage peut être commandée indépendamment sans réduire les performances comme le dispositif d'éclairage.
(JA)
 液晶パネル(2)に積層して配置されるバックライト装置(3)では、隔壁(12)で複数の照明領域(15)に分割された複数の光源(11)上に、各光源(11)からの光が入射する光入射面(13a)が、光源(11)よりも高く、かつ、隔壁(12)の頂点と同じかそれよりも低い位置にある第1の光拡散部材(13)が配置され、かつ、該第1の光拡散部材(13)上に、間隙を有して、光入射面(14a)が隔壁(12)の頂点よりも高い位置にある第2の光拡散部材(14)が積層されている。これにより、複数の照明領域に分割されると共に、各照明領域内に複数の光源が配置された構成のバックライト装置において、照明装置としての性能を低下させることなく、各照明領域の独立制御が可能となる。
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Latest bibliographic data on file with the International Bureau