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. 04, 2012
Filed:
Mar. 04, 2009
Tomoki Igari, Tokyo, JP;
Tomohiko Sagimori, Tokyo, JP;
Mitsuhiko Ogihara, Tokyo, JP;
Takahito Suzuki, Tokyo, JP;
Hiroyuki Fujiwara, Tokyo, JP;
Hironori Furuta, Tokyo, JP;
Yusuke Nakai, Tokyo, JP;
Tomoki Igari, Tokyo, JP;
Tomohiko Sagimori, Tokyo, JP;
Mitsuhiko Ogihara, Tokyo, JP;
Takahito Suzuki, Tokyo, JP;
Hiroyuki Fujiwara, Tokyo, JP;
Hironori Furuta, Tokyo, JP;
Yusuke Nakai, Tokyo, JP;
Oki Data Corporation, Tokyo, JP;
Abstract
Provided is a technique of effectively extracting the beams of light excited in an LED light emitter other than the light beams emitted from a light-emitting region in the direction of a light-extraction surface. A pit with a tapered sidewall is formed in a substrate. A thin-film semiconductor element is attached to the pit. Light beams emitted from a side surface of the thin-film semiconductor element are reflected by the sidewall of the thin-film semiconductor element. Achieved thereby is effective extraction of light beams other than the light beams emitted from the light-emitting region in the direction of the light-extraction surface.