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SEMICONDUCTOR DEVICE

  • US 20120032785A1
  • Filed: 07/27/2011
  • Published: 02/09/2012
  • Est. Priority Date: 08/04/2010
  • Status: Active Grant
First Claim
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1. A semiconductor device comprising:

  • a rectifier circuit configured to generate an internal voltage by rectifying a wireless signal received via an antenna; and

    a protection circuit including a first transistor and a second transistor, the first transistor comprising a gate electrode and a drain electrode each electrically connected to the antenna and a source electrode grounded, and the second transistor comprising a source electrode electrically connected to the antenna and a gate electrode and a drain electrode each grounded,wherein the first transistor and the second transistor each comprise an oxide semiconductor layer, andwherein the protection circuit is configured to operate when an amplitude of the wireless signal received by the antenna is equal to or greater than a minimum operating voltage for the rectifier circuit.

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