A stacked semiconductor device is formed with a first mounting substrate, e.g., a single metal layer die tape, having a first semiconductor die attached thereto and a second mounting substrate, e.g., a double metal layer die tape having a second semiconductor die attached thereto. Substantially columnar...http://www.google.de/patents/US6051887?utm_source=gb-gplus-sharePatent US6051887 - Semiconductor stacked device for implantable medical apparatus
