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. 27, 2012
Filed:
May. 20, 2008
Sachio Karino, Miyagi, JP;
Eiji Takase, Miyagi, JP;
Makoto Oogane, Kanagawa, JP;
Tsuyoshi Nagatake, Kanagawa, JP;
Michiru Kamada, Miyagi, JP;
Hironobu Narui, Kanagawa, JP;
Nobukata Okano, Kanagawa, JP;
Sachio Karino, Miyagi, JP;
Eiji Takase, Miyagi, JP;
Makoto Oogane, Kanagawa, JP;
Tsuyoshi Nagatake, Kanagawa, JP;
Michiru Kamada, Miyagi, JP;
Hironobu Narui, Kanagawa, JP;
Nobukata Okano, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A semiconductor light-emitting device configured to decrease a leakage current in a current-blocking layer and including a light-emitting portion composed of a first compound semiconductor layer having a first conductivity type, an active layer, and a second layer having a second conductivity type, and a current-blocking layer in contact with the side of the light-emitting portion and composed of a third layer having the first conductivity type and a fourth layer having the second conductivity type.