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:
Jan. 30, 2007
Filed:
Jan. 19, 2005
Kazuaki Inukai, Hamamatsu, JP;
Kazuaki Inukai, Hamamatsu, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
A method of performing microfabrication using a hard mask in the manufacture of a semiconductor device having an interlayer dielectric (ILD) film made of low-dielectric constant, K, insulating material is provided. When treating a low-K dielectric film for use in semiconductor integrated circuitry and its underlying etching stopper film, a patterned resist film is used as a mask to etch a hard mask film. Subsequently, the resist pattern is subjected to stripping or 'ashing' in the atmosphere of a mixture gas of hydrogen (H) and helium (He) at a temperature higher than 200° C. under a pressure of about 1 Torr. With this procedure, microfabrication relying upon the hard mask less in facet is achievable during its subsequent etching of the low-K dielectric film, without damaging the hard mask film upon removal of the resist.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile