Photo-mask

Radiation imagery chemistry: process – composition – or product th – Radiation modifying product or process of making – Radiation mask

Patent

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Details

430321, 428203, 428209, 427164, 427595, G03F 900

Patent

active

054036836

ABSTRACT:
A photo-mask comprises a light-permeable substrate, a plurality of light-shielding films that are disposed on the substrate, the light-shielding films forming a mask pattern, and a light-permeable protective film that is disposed over the surface of the substrate including the light-shielding films so as to protect the light-shielding films.

REFERENCES:
patent: 4256778 (1981-03-01), Mizukami et al.
patent: 4368230 (1983-01-01), Mizukami et al.
patent: 4440841 (1984-04-01), Tabuchi
patent: 4735890 (1988-04-01), Nakane

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