A lower semiconductor element is mounted facing down on an insulating circuit board, and an upper semiconductor element is stacked facing up on the lower semiconductor element. Openings are provided in the insulating circuit board at a location facing the element electrodes of the lower semiconductor...http://www.google.fr/patents/US6445594?utm_source=gb-gplus-shareBrevet US6445594 - Semiconductor device having stacked semiconductor elements
Semiconductor device having stacked semiconductor elements
