×

Semiconductor device

  • US 20090057722A1
  • Filed: 09/19/2008
  • Published: 03/05/2009
  • Est. Priority Date: 05/30/2007
  • Status: Active Grant
First Claim
Patent Images

1. A semiconductor device comprising a CMOS inverter coupling circuit that couples n (n is two or above) CMOS inverters with each other,each of the n CMOS inverters having:

  • a first MOS transistor for a first conductivity type channel, which has a structure where a drain, a gate, and a source are arranged in a vertical direction with respect to a substrate and the gate surrounds an island-shaped semiconductor layer;

    a second MOS transistor for a second conductivity type channel different from the first conductivity type channel, which has a structure where a drain, a gate, and a source are arranged in a vertical direction with respect to the substrate and the gate surrounds an island-shaped semiconductor layer;

    an input terminal of the CMOS inverter arranged so as to connect the gate of the first MOS transistor with the gate of the second MOS transistor;

    an output terminal of the CMOS inverter arranged so as to connect a drain diffusion layer of the first MOS transistor with a drain diffusion layer of the second MOS transistor in an island-shaped semiconductor lower layer;

    a power supply wiring line for the first MOS transistor, which is arranged on a source diffusion layer of the first MOS transistor;

    a power supply wiring line for the second MOS transistor, which is arranged on a source diffusion layer of the second MOS transistor,wherein the semiconductor device further has a coupling portion that is used to connect the output terminal of an n−

    1th CMOS inverter with the input terminal of an nth CMOS inverter when arranging each of the n CMOS inverters with respect to the substrate, and the coupling portion is arranged between the substrate and the power supply wiring line for the first MOS transistor.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×