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:
Nov. 25, 2014
Filed:
Feb. 19, 2013
Minebea Co., Ltd., Kitasaku-gun, Nagano, JP;
Shohei Takada, Fukuroi, JP;
Tomotaka Horikawa, Fukuroi, JP;
Minebea Co., Ltd., Kitasaku-Gun, JP;
Abstract
A spread illuminating apparatus includes: a light guide plate with an emitting surface, a plurality of optical sheets laminated on the emitting surface, a light-blocking member that defines an effective area of the emitting surface, a light source, and a frame for accommodating the above constituents. The plurality of optical sheets are formed such that a position of an edge of each optical sheet on the incident light surface side of the light guide plate is spaced farther apart from the incident light surface of the light guide plate as moving toward a top layer of the optical sheets counted from the emitting surface, and the light-blocking member is fixed to each optical sheet and extends from the incident light surface side of the light guide plate so as to cover a vicinity of the edges of the plurality of optical sheets.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile