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:
Nov. 22, 1994
Filed:
Apr. 12, 1994
Shintaro Yamamichi, Tokyo, JP;
Hirohito Watanabe, Tokyo, JP;
Toshiki Hashimoto, Tokyo, JP;
Toshiyuki Sakuma, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A thin film capacitor which comprises a lower electrode, a dielectric film and an upper electrode is fabricated on a substrate. The lower electrode is not provided by etching process using a photoresist mask, but it is provided by providing an aperture thorough an insulating layer deposited on the substrate, and depositing a conductive film on the bottom of the aperture and connected to a lower interconnection provided on the bottom of the aperture. Consequently, no convex protrusion is found at the processed edge of the lower electrode.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile