Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Making electrical device
Patent
1995-03-15
1998-05-12
Baxter, Janet C.
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Making electrical device
430290, 430510, G03C 500
Patent
active
057503168
ABSTRACT:
A method of manufacturing a semiconductor device including the steps of: forming a transparent oxide film on a light reflecting surface; forming an anti-reflective a-c film on the surface of the transparent film; and coating a photoresist film on the surface of the anti-reflective film and patterning the photoresist film, wherein the thicknesses of the anti-reflective film and the transparent film are selected so as to set a standing wave intensity I.sub.sw =I.delta./I.sub.ave to 0.2 or smaller, where I.sub.ave is an average value of light intensity in the photoresist film, and I.delta. is an amplitude of a light intensity change. A fine pattern can be formed on a highly reflective substrate with a small size variation and at a high precision.
REFERENCES:
patent: 5437961 (1995-08-01), Yano et al.
patent: 5472829 (1995-12-01), Ogawa
Hashimoto Koichi
Kawamura Eiichi
Kobayashi Masaharu
Naori Nobuhisa
Oshima Tadasi
Ashton Rosemary
Baxter Janet C.
Fujitsu Limited
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