A memory card includes a first circuit board, a first semiconductor chip mounted to a top face of the first circuit board with a part of its under face confronting the first circuit board, a second circuit board of which a top face is bonded to a under face of the first circuit board, a second semiconductor...http://www.google.com.hk/patents/US7933127?utm_source=gb-gplus-share專利 US7933127 - Memory card and memory card manufacturing method