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:
Oct. 11, 2011
Filed:
May. 08, 2009
Takeshi Harada, Shiga, JP;
Junichi Shibata, Hyogo, JP;
Akira Ueki, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An interlayer insulating film is formed on the upper surface of a semiconductor substrate, and lower-level interconnects are formed in the interlayer insulating film. A liner insulating film is formed on the upper surfaces of the interlayer insulating film and lower-level interconnects. An interlayer insulating film is formed on the upper surface of the liner insulating film. Upper-level interconnects are formed in the interlayer insulating film. The lower-level interconnects and the upper-level interconnects are connected with each other through vias. Parts of the liner insulating film formed in via-adjacent regions have a greater thickness than a part thereof formed outside the via-adjacent regions.