Patent ID: 6908561

Claim:
A method for adhering a film of polyimide dielectric to a substrate, said method comprising the steps of: procuring a film of polyimide dielectric material; procuring a generally planar substrate including one of exposed copper-, titanium-, aluminum-, and copper-and-titanium-containing portions of said substrate; etching said one of said copper-, titanium-, and copper-and-titanium-containing portions of said substrate with a liquid etchant; cleaning said etchant from said one of exposed copper-, titanium-, and copper-and-titanium-containing portions of said substrate; in the case of an exposed aluminum-containing portion of said substrate, applying adhesion promoter to said aluminum-containing portion of said substrate, and in the case of one of said exposed copper-, titanium-, and copper-and-titanium-containing portions of said substrate, applying said adhesion promoter to said one of exposed copper-, titanium-, and copper-and titanium-containing portions of said substrate after said step of cleaning said etchant, to thereby form adhesive-applied aluminum/copper-titanium portions of said substrate; curing said adhesion promoter on said adhesive-applied aluminum/copper-titanium portions of said substrate to thereby produce cured adhesion promoter; applying SPIE varnish to said cured adhesion promoter; curing said SPIE varnish to form cured SPIE varnish; applying a layer of adhesion promoter to said cured SPIE varnish to form an adhesive surface; during said adhesive surface to form a cured adhesive surface; and laminating said polyimide dielectric material to said cured adhesive surface.