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.:
Date of Patent:
Jul. 30, 2002
Filed:
Oct. 26, 1999
Applicant:
Inventor:
Fumihiko Sagawa, Fukushima-ken, JP;
Assignee:
Alps Electric Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/1335 ;
U.S. Cl.
CPC ...
G02F 1/1335 ;
Abstract
In a light-guide plate for use in a liquid crystal display device, light enters a transmissive plate member from one end face thereof, is reflected and diffused inside the plate member, and emerges from one main surface of the plate member. A guide member is formed integrally with the main surface so as to guide a light-diffusing sheet member to be placed thereon.
Sagawa, Fumihiko. (2002). Liquid crystal display device having light-guide plate for reflecting and diffusing light-source light so that the light is uniformly incident on liquid crystal cell (U.S. Patent No. 6426763). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6426763
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