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:
Apr. 02, 2002
Filed:
Apr. 25, 2001
Hiroshi Yuasa, Osaka, JP;
Satoshi Ueda, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A plurality of lower-level metal interconnects are formed over a semiconductor substrate. A first fluorine-containing insulating film, made of a fluorine-doped insulator, is formed to fill in gaps between adjacent ones of the lower-level metal interconnects over the semiconductor substrate. An interlevel insulating film is formed over the lower-level metal interconnects and the first fluorine-containing insulating film. And a plurality of upper-level metal interconnects are formed on the interlevel insulating film. The interlevel insulating film includes: a second fluorine-containing insulating film made of a fluorine-doped insulator; and a silicon-rich insulating film containing a larger quantity of silicon than a quantity defined by stoichiometry.