Patent ID: 7663593
Filing Date: 2010-02-16
Classification: G09G,G11C,H03K

Abstract:
1. A level shift circuit for shifting the level of an input signal and outputting the result, comprising: a first switch turning on or off in accordance with a voltage of a first node, switching ON and OFF when the voltage is a first threshold value, and outputting a first voltage to an output terminal of the level shift signal at the time of the ON state; a second switch turning on or off in accordance with the voltage of a second node, switching ON and OFF when the voltage is a second threshold value, and outputting a second voltage to the output terminal at the time of the ON state; a first capacitor receiving a first input signal at one terminal and connected at the other terminal to the first node; a second capacitor receiving a second input signal at one terminal, and connected at the other terminal to the second node; and a voltage setting circuit for setting the voltage of the first node at the first threshold value and setting the voltage of the second node at the second threshold value in a predetermined period and setting the first node and the second node in a floating state after the predetermined period.