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Semiconductor device

  • US 8,467,825 B2
  • Filed: 11/16/2010
  • Issued: 06/18/2013
  • Est. Priority Date: 11/20/2009
  • Status: Expired due to Fees
First Claim
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1. A semiconductor device comprising:

  • a portion configured to transmit and receive a wireless signal;

    a battery configured to supply power supply voltage;

    a demodulation circuit electrically connected to the portion;

    a power control circuit electrically connected to the demodulation circuit; and

    a signal processing portion electrically connected to the demodulation circuit, the power control circuit, and the battery,wherein the signal processing portion comprises a transistor, andwherein a channel formation region of the transistor comprises an oxide semiconductor with a hydrogen concentration of lower than or equal to 5×

    1019 atoms/cm3.

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