Patent ID: 8289309
Filing Date: 2012-10-16
Classification: G09G,G11C

Abstract:
1. An inverter circuit comprising: a first transistor, a second transistor, a third transistor, a fourth transistor and a fifth transistor each having channels of same conduction type; a first 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 voltage of a first terminal which is a source or a drain of the fourth transistor and a voltage of the output terminal or a potential difference corresponding thereto, the third transistor makes or breaks electrical connection between the first terminal 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 fourth transistor makes or breaks electrical connection between the first capacity element and a gate of the second transistor in response to a first control signal applied to a gate of the fourth transistor, the fifth transistor makes or breaks electrical connection between the first capacity element and a fourth voltage line in response to a second control signal applied to a gate of the fifth transistor, and the first capacity element is inserted between a source or a drain not connected to the fourth voltage line of the fifth transistor and a fifth voltage line.