Two semiconductor memory chips are placed onto a flexible wiring and are shaped by simple folding of the flexible wiring about a central elastic line, into a space-efficient stack arrangement whose outer contacts are formed only at one marginal side. To form memory cards, a plurality of such stack arrangements...http://www.google.com.au/patents/US6157541?utm_source=gb-gplus-sharePatent US6157541 - Stack arrangement for two semiconductor memory chips and printed board for accepting a plurality of such stack arrangements
