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Logic circuit and semiconductor device

  • US 8,952,726 B2
  • Filed: 10/12/2010
  • Issued: 02/10/2015
  • Est. Priority Date: 10/16/2009
  • Status: Active Grant
First Claim
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1. A logic circuit comprising:

  • a first unit logic circuit to which a first signal, a second signal, and a third signal that is a clock signal are input as input signals and which outputs a fourth signal whose voltage state is set in accordance with the first to third signals which are input, anda second unit logic circuit to which the first signal, the second signal, and the third signal that is a clock signal are input as input signals and which outputs a fifth signal whose voltage state is set in accordance with the first to third signals which are input,wherein the first unit logic circuit and the second unit logic circuit each include a transistor comprising an oxide semiconductor layer including a channel formation layer, andwherein an off current is 1×

    10

    17
    A or less per micrometer in channel width in the transistor.

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