FLAT LIGHT SOURCE DEVICE AND DISPLAY DEVICE

PROBLEM TO BE SOLVED: To provide a flat light source device and a display device which have improved chromaticity and visual brightness, and prevent unevenness of brightness and firefly phenomenon (local brightness nonuniformity around LED), at low cost. SOLUTION: For a flat light source device maki...

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Bibliographische Detailangaben
1. Verfasser:	YAMAMURA TORU
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING FREQUENCY-CHANGING FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO THEFORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THELIGHT EMITTED LIGHTING MECHANICAL ENGINEERING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a flat light source device and a display device which have improved chromaticity and visual brightness, and prevent unevenness of brightness and firefly phenomenon (local brightness nonuniformity around LED), at low cost. SOLUTION: For a flat light source device making a flat light go out from a light outgoing surface 12 by making a plurality of point light sources 21, 22, 23, 24 get in a surface of incident of a flat-shaped light guide body 1, at least either x or y of the xy chromaticity figure of the point light sources 22, 23 located at the center is made bigger than that of the chromaticity of the point light sources 21, 24 located at the side part.