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:
Aug. 21, 2012
Filed:
Sep. 24, 2009
Takeshi Aoki, Yokohama, JP;
Tadashi Sawayama, Machida, JP;
Takeshi Aoki, Yokohama, JP;
Tadashi Sawayama, Machida, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A photoelectric conversion device includes a semiconductor substrate, a first insulating film on the semiconductor substrate, a second insulating film on the first insulating film, a third insulating film on the second insulating film, and a wiring disposed in the third insulating film, the wiring being a wiring layer closest to the semiconductor substrate. A first plug of a shared contact structure and a second plug are disposed in the first insulating film. A third plug and a first wiring that constitute a dual damascene structure are disposed in the second and third insulating films. The first insulating film is used as an etching stopper film during etching of the second insulating film and the second insulating film is used as an etching stopper film during etching of the third insulating film.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile