Fluorine-containing composition for forming anti-reflection film on resist surface and pattern formation method
First Claim
1. An aqueous composition for forming an anti-reflection film on a resist surface, which comprises a water-soluble fluorine compound, which comprises at least perfluoroalkyl alcohol-ethylene oxide adducts as the water-soluble fluorine compound.
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Abstract
A composition for forming anti-reflection film on resist surface which comprises an aqueous solution of a water soluble fluorine compound, and a pattern formation method which comprises the steps of coating a photoresist composition on a substrate; coating the above-mentioned composition for forming anti-reflection film; exposing the coated film to form a specific pattern; and developing the photoresist, are provided. Since the composition for forming anti-reflection film can be coated on the photoresist in the form of an aqueous solution, not only the anti-reflection film can be formed easily, but also, the film can be removed easily by rinsing with water or alkali development. Therefore, by the pattern formation method according to the present invention, it is possible to form a pattern easily with a high dimensional accuracy.
21 Citations
23 Claims
- 1. An aqueous composition for forming an anti-reflection film on a resist surface, which comprises a water-soluble fluorine compound, which comprises at least perfluoroalkyl alcohol-ethylene oxide adducts as the water-soluble fluorine compound.
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12. A pattern formation method, comprising:
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a) coating a photoresist composition on a substrate; b) coating on the obtained photoresist an aqueous composition for forming an anti-reflection film on said resist surface; c) exposing the photoresist in the obtained surface anti-reflection film to form a specific pattern; and d) developing the photoresist with an aqueous alkaline solution, wherein said aqueous composition for forming said anti-reflection film on said resist surface comprises a water-soluble fluorine compound, which comprises at least perfluoroalkyl alcohol-ethylene oxide adducts as the water-soluble fluorine compound. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification