X-ray or gamma ray systems or devices – Specific application – Lithography
Patent
1983-09-06
1986-07-08
Schilling, Richard L.
X-ray or gamma ray systems or devices
Specific application
Lithography
430 5, G03F 100, G21K 500
Patent
active
045997373
ABSTRACT:
An X-ray mask having a mask pattern formed from nickel or a material having nickel as a principal component supported on a thin membrane. The X-ray mask has characteristics substantially equal to those of the conventional X-ray mask employing Au as a mask pattern and is much lower in price than the Au-containing mask pattern. In addition, since the X-ray mask can easily be formed by electroless plating, it is possible to form a mask pattern with a higher accuracy than that in case of employing Au alone.
REFERENCES:
patent: 3443915 (1969-05-01), Wood et al.
patent: 3642476 (1972-02-01), Mesley
Kimura Takeshi
Mochiji Kozo
Obayashi Hidehito
Hitachi , Ltd.
Schilling Richard L.
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