Patent ID: 8497726

Claim:
A level shifter, comprising: a signal converter connected to an external power source and a ground; first and second output terminals connected to the signal converter, the first and second output terminals being configured to output a bias voltage applied from the external power source; and a switching unit configured to switch a connection state of the signal converter according to an input signal to adjust output voltage values of the first and second output terminals, the switching unit comprising: first and second transistors, the first transistor being of a type that is different from a type of the second transistor, the first and second transistors being connected to each other in series between an input terminal, to which an input signal is applied, and the external power source, gates of the first and second transistors being commonly connected to the second output terminal; and a third transistor disposed between the input terminal and the first output terminal, a gate of the third transistor being connected to a first connection node disposed between the first and second transistors.