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:
Jun. 12, 2012
Filed:
Jun. 17, 2008
Toshio Banba, Tokyo, JP;
Toshio Banba, Tokyo, JP;
Sumitomo Bakelite Co., Ltd., Tokyo, JP;
Abstract
A process for producing a semiconductor device includes a circuit formation step of forming circuit wiring on a semiconductor wafer using a chemically-amplified resist, and a cured film formation step of forming a cured film that protects the circuit wiring after forming the circuit wiring, the cured film being formed of a cured material of a photosensitive resin composition that comprises an alkali-soluble resin having a polybenzoxazole structure or a polybenzoxazole precursor structure, a compound that generates an acid upon exposure to light, and a solvent. The photosensitive resin composition substantially does not contain N-methyl-2-pyrrolidone. The process can suppress a T-top phenomenon or the like that may occur when forming a circuit on a semiconductor wafer using a chemically-amplified resist in the production of semiconductor devices.