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. 14, 2004
Filed:
Jan. 14, 2003
Shunji Yoshitake, Kawasaki, JP;
Koichi Takahashi, Yokohama, JP;
Shinji Nunotani, Kitakyushu, JP;
Kenichi Ohashi, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A semiconductor light emitting device is disclosed, which comprises a substrate, and a multi-layer semiconductor film formed on the substrate, the multi-layer semiconductor film including a plurality of semiconductor layers overlaid on the substrate, the semiconductor layers having a light emission layer for emitting a light, wherein the light is picked up at a first side of the multi-layer semiconductor film, which is a side opposite to the substrate, wherein a pattern having a light pickup surface is formed on a light emitting portion of the multi-layer semiconductor film, the light pickup surface is in a (111) plane or a plane in the vicinity of the (111) plane, and an unevenness is formed on the light pickup surface.