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Browse Prior Art Database

Patterning by "rubber Stamping"

IP.com Disclosure Number: IPCOM000062021D
Original Publication Date: 1986-Sep-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Romankiw, LT: AUTHOR

Abstract

High resolution patterns for printed circuit boards, hybrid circuits or other similar applications can be formed by rubber stamping said patterns onto the dielectric surface. The imprinted pattern can be made catalytically active and can be to plate thick patterns of electroless Cu, Ni, Co, Au, Ag, etc., on top of the stamping after drying and/or curing or after conversion of the applied catalyst containing ink or paste by heat.

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Patterning by "rubber Stamping"

High resolution patterns for printed circuit boards, hybrid circuits or other similar applications can be formed by rubber stamping said patterns onto the dielectric surface. The imprinted pattern can be made catalytically active and can be to plate thick patterns of electroless Cu, Ni, Co, Au, Ag, etc., on top of the stamping after drying and/or curing or after conversion of the applied catalyst containing ink or paste by heat.

It is possible to form very fine resolution patterns in soft-compressible polymers, rubbery material, etc. by die stamping them, molding, cutting, sputter etching, or by chemi etching. When said above patterned materials are brought in contact with a viscous paste or fluid containing a catalyst in a thin film form or from a spongy material, the surface of the stamp, rubber, or compressible polymer becomes coated with a very thin film of ink, resin, or paste bearing catalyst. Such coated stamp is then brought in contact with a dielectric surface (polymer, ceramic, glass, etc.) and the viscous film transfers to the substrate and leaves a high resolution pattern. If the viscous material is a resinate or a metal paste, the substrate must then be heated to convert the resinate or paste to metal. When the paste is a colloidal suspension of SnPd activator or any other similar electroless activator, it is enough to dry the surface to make it selectively, catalytically active. In the case of the "other" activators,...