Patent ID: 7382347

Claim:
A drive circuit comprising: a plurality of shift registers electrically cascaded in a manner whereby an output signal from an output terminal of each of the shift registers is inputted to an input terminal of another one of the shift registers, each of the shift registers including: an output circuit having a first transistor having a first conductive path between a first clock terminal and an output terminal, and a second transistor having a second conductive path between the output terminal and a voltage electrode, an input circuit having a third transistor having a third conductive path between an input terminal and a control electrode of the first transistor, and a fourth transistor having a fourth conductive path between the input terminal and a control electrode of the second transistor, a reset circuit having a fifth transistor having a fifth conductive path between a second clock terminal and the control electrode of the second transistor, and a sixth transistor having a sixth conductive path between the control electrode of the first transistor and the control electrode of the second transistor, an anti-reversal circuit configured to prevent a voltage level at the control electrode of the second transistor from being reversed when a voltage level of a first clock signal inputted to the first clock terminal is reversed in the state where the first transistor is turned on and the second transistor is turned off, and a plurality of output lines to output the output signals to the exterior of the shift registers, wherein a phase-shifted clock signal is inputted to each of the first clock terminals of the shift registers as a first clock signal, and a second clock signal that is a phase-shifted signal with respect to the first clock signal is inputted to each of the second clock terminals of the shift registers.