A semiconductor package and an electronic circuit board in which the semiconductor package is mounted on an external circuit board. The semiconductor package has a substrate assembly and a semiconductor mounted on the substrate, where the substrate assembly is composed of a thick film circuit in the...http://www.google.es/patents/US5375042?utm_source=gb-gplus-sharePatente US5375042 - Semiconductor package employing substrate assembly having a pair of thin film circuits disposed one on each of oppositely facing surfaces of a thick film circuit
Semiconductor package employing substrate assembly having a pair of thin ...
