Patent ID: 8300039

Claim:
An inverter circuit comprising: a first transistor, a second transistor and a third transistor each having channels of same conduction type; a first capacity element and a second capacity element; and an input terminal and an output terminal, wherein the first transistor makes or breaks electrical connection between the output terminal and a first voltage line in response to a potential difference between a voltage of the input terminal and a voltage of the first voltage line or a potential difference corresponding thereto, the second transistor makes or breaks electrical connection between a second voltage line and the output terminal in response to a potential difference between a gate voltage of the second transistor and a voltage of the output terminal or a potential difference corresponding thereto, the third transistor makes or breaks electrical connection between a gate of the second transistor and a third voltage line in response to a potential difference between the voltage of the input terminal and a voltage of the third voltage line or a potential difference corresponding thereto, the first capacity element and the second capacity element are inserted in series between the input terminal and the gate of the second transistor, and an electrical connection point between the first capacity element and the second capacity element is electrically connected to the output terminal.