Pattern forming method by use of X-ray exposure

Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making

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430271, 430296, 430311, 430325, 430326, 430966, 430967, 430924, G03C 1495, G03C 500

Patent

active

048408727

ABSTRACT:
A pattern forming method in which a water-soluble organic film absorbing secondary electrons or soft X-rays is formed on a resist layer and thereafter, pattern exposure, development are carried out. The water-soluble organic film containing halogen, sulfur, metal atom, etc. absorbs secondary electrons or soft X-rays which are generated from a mask in X-rays exposure so that only X-rays passed through openings of the mask are applied to a resist layer and a super fine pattern of high aspect ratio can be obtained.

REFERENCES:
patent: 4061829 (1977-12-01), Taylor
patent: 4201580 (1980-05-01), Feit
patent: 4262073 (1981-04-01), Pampalone et al.
patent: 4287277 (1981-09-01), Matsumoto et al.
patent: 4461825 (1984-07-01), Kato et al.
patent: 4746596 (1988-05-01), Yoshioka et al.

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