Patent ID: 6476637
Filing Date: 2002-11-05
Classification: H03K

Abstract:
A voltage level shifter comprising first to fourth transistors of a first conduction type, each of the first to fourth transistors being a thin film transistor, the first and second transistors being connected in series between first and second power supply inputs with the control electrode of the second transistor being connected to a first input for receiving a direct input signal, the third and fourth transistors being connected in series between the first and second power supply inputs with the control electrode of the fourth transistor being connected to a second input for receiving a complementary input signal, the control electrode of the first transistor being connected to the output electrode of the third transistor and the common electrode of the fourth transistor, and the control electrode of the third transistor being connected to the output electrode of the first transistor and the common electrode of the second transistor,wherein the shifter further comprises gating means for gating the first and second inputs.