Patent ID: 6617878
Filing Date: 2003-09-09
Classification: H03K

Abstract:
A display device having:a matrix having elements corresponding to pixels of the display; at least one driver connected to the matrix to drive the matrix; an input device for receiving external input signals via input terminals, the input device being connected to the at least one driver for outputting level shifted signals; and wherein the input device comprises a voltage level shifter, said voltage level shifter including: first to fourth transistors, where the first to fourth transistors are P-type transistors, 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.