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:
Jun. 11, 2024
Filed:
Nov. 18, 2019
Applicant:
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Inventors:
Yuki Yamada, Tokyo, JP;
Masahiro Nada, Tokyo, JP;
Assignee:
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 31/107 (2006.01); H01L 31/0232 (2014.01); H01L 31/0304 (2006.01); H01L 31/18 (2006.01);
U.S. Cl.
CPC ...
H01L 31/1075 (2013.01); H01L 31/02327 (2013.01); H01L 31/03046 (2013.01); H01L 31/1844 (2013.01); H01L 31/1892 (2013.01);
Abstract
A first n-type contact layer, a second n-type contact layer, a multiplication layer, an electric field control layer, a light absorbing layer, and a p-type contact layer are layered in this order on a substrate. The second n-type contact layer is formed between the first n-type contact layer and the light absorbing layer, is made to have an area smaller than that of the light absorbing layer in a plan view, and is disposed inside the light absorbing layer in a plan view.