A plurality of memory modules are stacked so as to form a multilayer integrated memory circuit. All of the memory modules have a plurality of bare memory IC chips mounted thereon, and have the same structure, the same circuit configuration and the same terminal arrangement in lead frames with each other....http://www.google.com.au/patents/US5490041?utm_source=gb-gplus-sharePatent US5490041 - Semiconductor integrated circuit module and a semiconductor integrated circuit device stacking the same
