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:
Apr. 21, 2009
Filed:
Feb. 01, 2006
Hajime Onishi, Chino, JP;
Tetsuo Nishida, Suwa, JP;
Hajime Onishi, Chino, JP;
Tetsuo Nishida, Suwa, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A surface-emitting type device includes a substrate including a first face and a second face that is tilted with respect to the first face and has a plane index different from a plane index of the first face, an emission section formed above the first face, and a rectification section formed above the second face, wherein the emission section includes a first semiconductor layer of a first conductivity type, an active layer formed above the first semiconductor layer, and a second semiconductor layer of a second conductivity type formed above the active layer, the rectification section includes a first semiconductor layer of the second conductivity type, and a second semiconductor layer of the first conductivity type formed above the first semiconductor layer, the first semiconductor layer of the emission section and the first semiconductor layer of the rectification section are formed by a common process and include the same impurity, the emission section and the rectification section are electrically connected in parallel with each other, and the rectification section has a rectification action in a reverse direction with respect to the emission section.