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:
Oct. 18, 2022
Filed:
Sep. 29, 2021
Applicant:
Wooriro Co., Ltd., Gwangju, KR;
Inventors:
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 31/107 (2006.01); H01L 31/0224 (2006.01);
U.S. Cl.
CPC ...
H01L 31/107 (2013.01); H01L 31/022408 (2013.01);
Abstract
According to an embodiment, a single photon detector configured to reduce a dark current comprises a buffer layer, a light absorption layer, a grading layer, an electric field control layer, and a window layer sequentially formed on a substrate. An active area may be formed in the window layer. A barrier junction may be formed through the window layer up to at least a portion of the light absorption layer, around the active area.