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:
Dec. 07, 2021
Filed:
Dec. 12, 2019
Canon Kabushiki Kaisha, Tokyo, JP;
Hajime Ikeda, Yokohama, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A photo-detection device in one embodiment includes: a first semiconductor region that accumulates a signal charge based on an incident light; a second semiconductor region that is capable of accumulating a signal charge, the number of signal charges that can be accumulated in the second semiconductor region being less than the number of signal charges that can be accumulated in the first semiconductor region; a first gate that transfers the signal charge from the first semiconductor region to the second semiconductor region; and a charge multiplication unit that includes a third semiconductor region and avalanche-multiplies the signal charge transferred from the second semiconductor region to the third semiconductor region.