High resolution 3-D circuit formation using selective or continuous catalytic painting

摘要

A method of forming an electrical feature such as a 3-D circuit on a substrate is described. The method includes the following steps. A catalytic paint is first selectively deposited on the surface of a molded polymer substrate to form a paint coating of the substrate. A conductive metal such as copper or nickel is then deposited onto the coating to form a plating of the substrate. An electrical feature is then obtained by forming a precision conductive pattern in the conductive metal.