Copolymer for semiconductor lithography and producing method...

Details Copolymer for semiconductor lithography and producing method... Copolymer for semiconductor lithography and producing method...

2011-03-22

2011-03-22

Chu, John S (Department: 1722)

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Radiation sensitive composition or product or process of making

C430S326000, C430S905000, C430S910000, C526S313000, C526S320000

Reexamination Certificate

active

07910282

ABSTRACT:
In order to improve a resist pattern shape in a semiconductor lithography process, which is a factor largely affecting on a processing precision, an integration degree and yield, a copolymer for semiconductor lithography where a composition of a hydroxyl group-containing repeating unit in a low molecular weight region is controlled, and a method of producing the same are provided.According to the invention, in a copolymer for semiconductor lithography, which is obtained by copolymerizing a monomer having a hydroxyl group and a monomer having no hydroxyl group, when a copolymer of which composition of a hydroxyl group-containing repeating unit is controlled is used, the object can be achieved.

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