Patent ID: 7838380
Filing Date: 2010-11-23
Classification: H01L

Abstract:
1. A method for manufacturing passive devices in an integration manner, the method comprising the steps of: forming an adhesive layer on a dummy substrate; bonding a thin metal sheet on the adhesive layer so that said thin metal sheet overlies the adhesive layer; attaching a masking material on a backside of the thin metal sheet, patterning regions where the passive devices are to be formed, and forming insulators at a predetermined depth in a predetermined regions of the thin metal sheet; removing the masking material, forming metal pads on the backside of the thin metal sheet using photolithograph; attaching the formed device to a lower substrate by using the metal pads; removing the adhesive layer and the dummy substrate; removing metal of an upper surface of the thin metal sheet until the insulators are exposed; and thereafter forming solder bumps on at least one exposed portion of the thin metal sheet.