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. 19, 1996
Filed:
Jul. 27, 1993
Kousaku Yano, Osaka, JP;
Masayuki Endo, Osaka, JP;
Yuka Terai, Osaka, JP;
Noboru Nomura, Kyoto, JP;
Tomoyasu Murakami, Osaka, JP;
Tetsuya Ueda, Osaka, JP;
Satoshi Ueda, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A BPSG layer serving as a silicon oxide layer is formed on a semiconductor substrate 1. Formed on the surface of the BPSG layer is a hydrophobic molecular layer comprising hydrophobic groups such as methyl, ethyl and the like, by a silylation reaction (in which silyl having hydrophobic groups such as methyl groups, ethyl groups and the like, is reacted with OH groups, and in which the hydrophobic groups are substituted with H of the OH groups to generate --O--Si(CH.sub.3).sub.3 or the like). The molecular layer prevents the BPSG layer from absorbing moisture.