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:
Sep. 28, 2010
Filed:
Mar. 28, 2007
Toshiaki Suzuki, Tokyo, JP;
Keisuke Tsukada, Tokyo, JP;
Toshiaki Suzuki, Tokyo, JP;
Keisuke Tsukada, Tokyo, JP;
Zeon Corporation, Tokyo, JP;
Abstract
The direct-type backlight device of the present invention includes a reflecting plate, a plurality of point light sources and a light diffusing plate in this order. A light emitting surface of the light diffusing plate is provided with a fine concavo-convex structure which is a split image forming member. By the fine concavo-convex structure, images A, B, Cand Don the light emitting surface corresponding to four point light sources A, B, C and D which constitute a convex quadrilateral which has the smallest area and the shortest circumference length among the plurality of point light sources are observed in a specific region W in a region surrounded by positions A, B, Cand Dwhich are positions of the projected image of the point light sources A, B, C and D on the light diffusing plate.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile