Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Forming nonplanar surface
Patent
1997-10-15
2000-08-01
Duda, Kathleen
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Forming nonplanar surface
430322, G03F 726
Patent
active
060964847
ABSTRACT:
A chemically amplified resist is applied to a semiconductor substrate and subjected to post-apply bake, and exposed to light, then, the resist is treated with a vapor of an organic solvent such as PGMEA. By treating with the vapor of the organic solvent, acid diffusion in the resist in the post-exposure bake is suppressed, and a resist pattern having an excellent profile is obtained by development.
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Azuma et al., "The Role of the Residual Solvent for Chemical Amplification Resists," Journal of the Electrochemical Society, vol. 140, No. 11, Nov., 1993, pp. 3158-3161.
Duda Kathleen
Kabushiki Kaisha Toshiba
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