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:
Jul. 08, 2008
Filed:
Jun. 23, 2004
Seiji Nagahara, Kanagawa, JP;
Satoshi Watanabe, Tokyo, JP;
Kazunori Maeda, Tokyo, JP;
NEC Electronics Corporation, Kanagawa, JP;
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Abstract
With the damascene process in which an interconnection is formed using a conventional chemically amplified positive photoresist composition, there arises a problem that the photoresist within the via hole (as well as in its vicinity) may remain even after the exposure and the development are carried out. The present invention relates to a chemically amplified resist composition comprising, at least, a photo acid generator, a quencher and a salt having a buffering function for an acid which is generated from the acid generator by irradiation, wherein the salt having the buffering function for the acid generated from the acid generator is a salt derived from a long chain alkylbenzenesulfonic acid or a long chain alkoxybenzenesulfonic acid and an organic amine that is a basic compound.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile