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:
Jan. 12, 2010
Filed:
Dec. 22, 2007
Atsuo Michiue, Komatsushima, JP;
Tomonori Morizumi, Anan, JP;
Hiroaki Takahashi, Anan, JP;
Nichia Corporation, Anan-shi, JP;
Abstract
A nitride semiconductor laser element comprises; a nitride semiconductor layer that includes a first nitride semiconductor layer, an active layer, and a second nitride semiconductor layer, and that has a cavity with end faces, and a protective film formed on at least one end face of the cavity, wherein the protective film is formed of a first film with a crystal structure that has the same axial orientation as that of the nitride semiconductor layer constituting the end face of the cavity, and a second film with a crystal structure that has a different axial orientation from that of the first film, in this order from the side of the end face.