Patent ID: 7355270
Filing Date: 2008-04-08
Classification: G06K,H01L,H01Q

Abstract:
1. A semiconductor chip comprising: a coil antenna; a circuit for transmission and reception of signals to and from an external device with use of said coil antenna; a mechanism for increasing a coupling coefficient in an electromagnetic coupling between said coil antenna and said external device; and wherein in connection with said mechanism, a circuit surface of said semiconductor chip and said coil antenna are arranged in such a manner that magnetic field lines passing through the coil antenna are strengthened by a mirror effect of the coil antenna induced by the circuit surface of said semiconductor chip, in which an external form of the circuit surface of said semiconductor chip is formed inside an external form of said coil antenna and said coil antenna is formed outside, or in an area mainly outside, an external form of the circuit surface of said semiconductor chip, in a plan view of the circuit surface of the chip.