The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 7810979 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 12, 2010

Filed:

Jun. 02, 2005
Applicant:

Takashi Oku, Saitama, JP;

Inventor:

Takashi Oku, Saitama, JP;

Assignee:

Sony Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/13363 (2006.01);
U.S. Cl.
CPC ...
Abstract

An illumination device including a first light source for emitting light of a first primary color, a second light source for emitting light of a second primary color, and a third light source for emitting light of a third primary color, wherein the first light source is a light emitting diode, the second light source is a fluorescent tube, and the third light source is either a light emitting diode or a fluorescent tube. The illumination device generates white light by mixing the light emitted by the first, second and third light sources. A liquid crystal panel is illuminated with the white light generated by the illumination device.


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