Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making
Reexamination Certificate
2005-04-25
2010-12-07
Kelly, Cynthia H (Department: 1795)
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Radiation sensitive composition or product or process of making
C430S271100, C526S242000
Reexamination Certificate
active
07846637
ABSTRACT:
The liquid immersion lithography process is configured so that the resist pattern resolution is improved by exposing a resist film to the lithographic exposure light under the conditions in which the predetermined thickness of the liquid for liquid immersion lithography, of which the refractive index is higher than that of air and smaller than that of the resist film is intervened at least on the resist film in a path of the lithography exposure light reaching the resist film, a protective film is formed on the surface of the resist film to be used. Therefore, when various immersion liquid, water being the representative example is used in the liquid immersion lithography process can be formed, the deterioration of the resist film and the immersion liquid to be used are simultaneously prevented, and the number of the process steps are not increased, and then the resist pattern having higher resolving ability.
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Endo Kotaro
Ishizuka Keita
Wakiya Kazumasa
Yoshida Masaaki
Eoff Anca
Hoffmann & Baron , LLP
Kelly Cynthia H
Tokyo Ohka Kogyo Co. Ltd.
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