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Title:
Resist reflow method for making submicron patterned resist masks
Abstract:
The method for making patterned resist masks having minimum opening dimensions. The mask is prepared initially using standard photo or electron beam lithography techniques to yield the smallest aperture dimensions consistent with the state-of-the-art. Then, the resulting mask is placed within a chamber containing an atmosphere of resist solvent vapor. The vapor is absorbed by the patterned resist mask causing controlled resist reflow which uniformly reduces the dimensions of the resist openings by an amount determined by time, temperature, resist thickness, resist type and solvent used.
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Inventors:
Feng, Bai Cwo (Wappingers Falls, NY, US)
Application Number:
584789
Filing Date: 1975-06-09 Publication_date: 1977-05-10 Assignee:
International Business Machines Corporation (Armonk, NY)
Primary Class(es):
430/296
427/96, 427/259, 427/273, 427/335, 427/336, 430/325, 430/331, 430/432, 438/777, 438/947, 438/948
Other Classes:
US Patent Ref:
Other Refs:
Other References:
Galindo et al., IBM TDB, vol, 13, No. 5, (10-1970), p. 1266, Method of Photoresist Appl. Esch et al., IBM TDB, vol. 16, No. 6, (11-1973), Rheology...by Spin, pp. 1730-1731. |