| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a less expensive memory card. <P>SOLUTION: An electronic device comprises a substrate 2 having wiring lines with a plurality of external electrode terminals exposed to a first surface, a sealing member 3 formed of an insulating resin to cover the whole of a second surface as the back surface opposite to the first surface, and one or more semiconductor elements 5a, 5b covered with the sealing member 3, fixed to the second surface 2b of the substrate 2 and having electrodes connected electrically to the wiring lines 4 through a connecting means 6. The substrate 2 is quadrangular in shape and a card-type package is constituted by the substrate 2 and the sealing member 3. One or a plurality of semiconductor elements 5a constituting a memory chip(s), as well as a control chip 5b for controlling the memory chip(s), are fixed to the substrate to form a memory card. A direction recognizing portion is formed at edges of the substrate 2 and the sealing member 3. <P>COPYRIGHT: (C)2009,JPO&INPIT |
