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:
Mar. 22, 2022
Filed:
Jun. 19, 2019
Fujitsu Limited, Kawasaki, JP;
Hiroyasu Yamashita, Isehara, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
A photodetector includes: a photoelectric conversion layer including a first principal surface from which light enters and a second principal surface on the opposite side from the first principal surface and configured to perform photoelectric conversion on the light; a first diffraction grating formed on a side of the second principal surface and including a configuration where first surfaces which extend in a stripe state in a first direction and second surfaces which extend in a stripe state in the first direction and have a height difference with respect to the first surfaces are alternately arranged; metal wires provided at intervals over the first surfaces and the second surfaces and which extend in the first direction or a second direction perpendicular to the first direction; and a second diffraction grating formed over the first diffraction grating and including grooves which are formed at intervals and extend in the second direction.