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. 04, 2022
Filed:
Sep. 30, 2016
Sony Corporation, Tokyo, JP;
SONY CORPORATION, Tokyo, JP;
Abstract
Provided is a light-emitting device that includes a first electrode layer, a first conduction type layer, a second conduction type layer, an active layer, and a second electrode layer. The first conduction type layer includes a current injection region formed by the first electrode layer and a current non-injection region. A waveguide structure included in the first conduction type layer, the active layer, and the second conduction type layer includes a first region and a second region. The first region has a first waveguide that is the current injection region and the current non-injection region and has a first refractive index difference. The second region has a second waveguide arranged to be extended from the first waveguide to the first end and has a second refractive index difference greater than the first refractive index difference. The second waveguide has a region narrowing toward the first end.