Patent ID: 6873186

Claim:
A level shift circuit having a pair of an input terminal and an inverted input terminal and a pair of an output node and an inverted output node, for receiving an input signal and an inverted input signal by said input terminal and said inverted input terminal, for shifting an amplitude level of said input signal and said inverted input signal to a higher amplitude level, and for transmitting an output signal having the shifted amplitude level and an inverted output signal obtained by inverting the output signal to said output node and said inverted output node, respectively, comprising: a first N-type signal input transistor having a gate electrode to which said input terminal is connected; a second N-type signal input transistor having a gate electrode to which said inverted input terminal is connected; a first current mirror circuit disposed between said first N-type transistor and said inverted output node, for amplifying current flowing in said first N-type transistor by predetermined number of times, and drawing out the amplified current from said inverted output node; and a second current mirror circuit disposed between said second N-type transistor and said output node, for amplifying current flowing in said second N-type transistor by predetermined number of times, and drawing out the amplified current from said output node.