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:
Aug. 26, 2008
Filed:
Oct. 31, 2006
Applicants:
Koji Hiraiwa, Tokyo, JP;
Takeo Kageyama, Tokyo, JP;
Norihiro Iwai, Tokyo, JP;
Keishi Takaki, Tokyo, JP;
Inventors:
Koji Hiraiwa, Tokyo, JP;
Takeo Kageyama, Tokyo, JP;
Norihiro Iwai, Tokyo, JP;
Keishi Takaki, Tokyo, JP;
Assignee:
The Furukawa Electric Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01S 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A VCSEL device includes a polyimide having a larger thickness (d) on the surface of a semiconductor layer structure in a peripheral area, which is separated from a mesapost by an annular groove. The top surface of the central mesapostis located at a lower position compared to the top surface of the peripheral area. A structure is obtained wherein the mesapost is not contacted by a jig or probe during handling the device in the test or assembly thereof.