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:
May. 26, 2026
Filed:
Sep. 05, 2023
Sumitomo Electric Industries, Ltd., Osaka, JP;
Takahiko Kawahara, Osaka, JP;
Kenichi Machinaga, Osaka, JP;
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka, JP;
Abstract
A light receiving element includes a substrate having a first main surface, and includes a light receiving layer provided on the first main surface. The light receiving layer includes a first semiconductor layer and a second semiconductor layer provided on the first semiconductor layer. The light receiving element includes a contact layer provided on the light receiving layer, and includes a groove that separates the contact layer for each pixel. The first semiconductor layer includes a type-II quantum-well layer including an InGaAs layer and a GaAsSb layer. The second semiconductor layer includes a AlGaInAs layer, where 0≤x<1, 0≤y<1, and 0<x+y<1. The bottom surface of the groove is situated between a top surface and a bottom surface of the second semiconductor layer, and the light receiving layer includes an n-type region below an exposed portion of a bottom surface of the groove.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile