SURFACE LIGHT SOURCE DEVICE AND FLAT DISPLAY DEVICE USING IT

PROBLEM TO BE SOLVED: To provide light having a desired color by using a plurality of light source elements as light sources, and emitting light having a plurality of luminescent wave lengths and emitting the light having different intensity in every wave length. SOLUTION: Three wave length tubes ha...

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1. Verfasser:	OKADA NOBUO
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING BLASTING CRYPTOGRAPHY 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 DISPLAY DISPLAYING EDUCATION FREQUENCY-CHANGING FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING LABELS OR NAME-PLATES LIGHTING MECHANICAL ENGINEERING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS SEALS SIGNS 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 light having a desired color by using a plurality of light source elements as light sources, and emitting light having a plurality of luminescent wave lengths and emitting the light having different intensity in every wave length. SOLUTION: Three wave length tubes having red, green, blue luminescent wave lengths are used as FL tubes 8a, 8b of a flat display device, and display color (white) of a liquid crystal module 2 is determined according to the chromaticity of the EL tubes 8a, 8b used for back lighting and the total chromaticity of color filters of RGB of the liquid crystal module 2. Characteristics (intensity) of three wave lengths of outgoing light from the FL tubes 8a, 8b are made variable. As a process to make variable, the material and amount of a phosphor of the RGB sealed in the FL tubes 8a, 8b are varied, or tube current flowing through the tubes is individually controlled. Even if either process is used, the chromaticity intensity of the FL tubes 8a, 8b is varied, and finally the display color of the liquid crystal module 2 is made variable.