| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a portable electronic device improved in reliability with high resistance to mechanical stress. <P>SOLUTION: The portable electronic device comprises an antenna wiring board, an LSI mounted on the antenna wiring board and performing exchange of data by communication with an external device, a surface substrate disposed in opposition to the antenna wiring board across the LSI, and a first release layer disposed at least between the LSI and the surface substrate in a non-fixed state to the surface substrate. <P>COPYRIGHT: (C)2007,JPO&INPIT |
