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:
Sep. 07, 2021
Filed:
May. 29, 2019
Canon Kabushiki Kaisha, Tokyo, JP;
Takumi Ogino, Koganei, JP;
Hideaki Ishino, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A photoelectric conversion apparatus includes, a semiconductor substrate having a photoelectric conversion unit performing photoelectric conversion on entering light and accumulating first electric charges, a first transistor electrically connected to the photoelectric conversion unit and having a first gate on a second surface, and a second transistor having a second gate shorter than the first gate on the second surface, a first fixed charge film continuously provided directly or with an insulating film in between in an area overlapping the photoelectric conversion unit on a first surface and the second transistor, the first fixed charge film having fixed charges of the first polarity, and a second fixed charge film provided directly or with an insulating film in between in an area overlapping the second transistor and the first fixed charge film, the second fixed charge film having fixed charges of a second polarity.