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:
May. 26, 2015
Filed:
Dec. 09, 2013
Shin-etsu Chemical Co., Ltd., Tokyo, JP;
SHIN-ETSU CHEMICAL CO., LTD., Tokyo, JP;
Abstract
An additive polymer comprising recurring styrene units having an ester group bonded to a CF—C(OR)—Rgroup (wherein Ris H, acyl or acid labile group, Ris H, CHor CF) such as 1,1,1,3,3,3-hexafluoro-2-propanol is added to a polymer capable of increasing alkali solubility under the action of acid to formulate a resist composition. The resist composition can minimize outgassing from a resist film during the EUV lithography and form a resist film having a hydrophilic surface sufficient to prevent formation of blob defects on the film after development.
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