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:
Sep. 04, 2012
Filed:
Aug. 26, 2003
Hajime Yamamoto, Kawasaki, JP;
Satoshi Takechi, Kawasaki, JP;
Hajime Yamamoto, Kawasaki, JP;
Satoshi Takechi, Kawasaki, JP;
Fujitsu Semiconductor Limited, Yokohama, JP;
Abstract
The present invention provides a method of manufacturing a semiconductor device capable of highly detailed patterning using a resist pattern having smoothed wall surfaces and reduced roughness. The method includes the steps of: forming a resist pattern over a base layer; applying a resist pattern smoothing material onto a surface of the resist pattern, thereafter heating and developing; and etching the base layer using the smoothed resist pattern, wherein one of an application thickness and a heat temperature is adjusted so as to smooth at least wall surfaces of the resist pattern. Aspects in which a maximum opening dimension and a minimum opening dimension of the smoothed resist pattern are ±5% of a predetermined opening dimension D (nm), and an average opening dimension Dav. (nm) of the smoothed resist pattern satisfies Dav. (nm)≧D (nm)×(90/100), are preferable.