Patent ID: 6696764
Filing Date: 2004-02-24
Classification: H01L,H05K

Abstract:
A flip chip type semiconductor device, comprising:multilayer thin film wirings including an inner electrode pad formed on one side thereof and an outer electrode pad formed on the other; and a flip chip type semiconductor chips mounted on said multilayer thin film wiring so that a bump electrode thereof is connected with said inner electrode pad of said multilayer thin film wiring, said multilayer thin film wirings being formed by forming said multilayer thin film wirings on both front and back surfaces of a base substrate having body parts made of metal or an alloy at both said front and back surfaces, each of said multilayer thin film wiring including an inner electrode pad formed on a surface of said multilayer thin film wiring closer to said base substrate and an outer electrode pad formed on an opposite surface not close to said base substrate, and then splitting said base substrate into said front surface side and said back surface side, and removing at least part of said body parts of said base substrates to expose said inner electrode pad.