Patent ID: 7422792

Claim:
A metallized polyimide film comprising: a polyimide film comprising a first side and a second side; an intermediate layer that contains at least one element selected from the group consisting of Mo, Cr, Ni, Si, Fe, and Al, a deposition amount of the at least one element being between 0.3 and 15 mg/in 2 ; and a conductive layer that is made of one of copper and a copper alloy formed on the intermediate layer; an oxygen and water barrier film that is made of at least one member selected from the group consisting of silicon oxide, aluminum oxide, titanium oxide, tin oxide, indium oxide, magnesium fluoride, magnesium oxide, aluminum, and indium tin oxide (ITO), and that has a thickness of between 5 and 300 nm formed on the second side of the polyimide film; wherein the film has a peel strength after a heat treatment that is between 1.08 kN/m and 1.12 kN/m.