Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1982-07-06
1984-06-12
McCamish, Marion
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
430198, 430319, 430291, 430315, H01B 108, B32B 1500
Patent
active
044541678
ABSTRACT:
A process for generating high resolution conductive patterns on an insulating substrate. A photosensitive resin coating applied to the surface of a substrate is exposed to a suitable light source through a mask. The unexposed portion of the coating defines the desired conductive pattern which is then coated with a low temperature melting glass powder. The substrate is fired to sinter the glass pattern and fuse it to the substrate. The substrate is then coated with a slurry of fine metal particles suspended in a volatilizable carrier. The substrate is again fired to sinter the metal into a united mass and causing it to fuse only with the low temperature melting glass pattern. The unadhered portions of the metal coating are removed by a washing operation. An exclusively metallic layer is thereby formed on a high resolution glass pattern intermediate layer supported by the substrate.
REFERENCES:
patent: 3075860 (1963-01-01), Veres
patent: 3355291 (1967-11-01), Baird et al.
patent: 4119480 (1978-10-01), Nishi et al.
patent: 4148761 (1979-04-01), Kazmierowicz
patent: 4239813 (1980-12-01), Murakami et al.
patent: 4371598 (1983-02-01), Medernach et al.
Bernot Anthony J.
Brown Kenneth
Beckman Instruments Inc.
Canzoneri A. A.
McCamish Marion
Mehlhoff F. L.
Steinmeyer R. J.
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