Unzippable polymer mask for screening operations

Details Unzippable polymer mask for screening operations Unzippable polymer mask for screening operations

1991-03-20

1994-05-24

Hearn, Brian E.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427266, 427555, 427558, 156643, 156668, 1566591, H01L 2100

Patent

active

053147090

ABSTRACT:
The present invention relates to a dry process for forming patterns on a substrate. More particularly, the process contemplates coating an unzippable polymer film with a small amount of desirable UV if required on a substrate; laser ablating said film into a desired pattern or mask; screening a conductive or resistive paste onto the substrate through the ablated features of said mask; heating said substrate and mask to the unzipping temperature of said mask; and, vaporizing said mask and UV absorbing dye if present leaving behind the solid of said conductive or resistive past adhered to the substrate in the desired pattern.

REFERENCES:
patent: 4456675 (1984-06-01), Anderson, Jr. et al.
patent: 4508754 (1985-04-01), Stepan
patent: 4539222 (1985-09-01), Anderson, Jr. et al.
patent: 4842677 (1989-06-01), Wojnarowski et al.
patent: 4865873 (1989-09-01), Cole, Jr. et al.
patent: 4987211 (1991-01-01), Araps et al.

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