Patent ID: 7859510
Filing Date: 2010-12-28
Classification: G02F,G09G,G11C,H01L

Abstract:
1. A liquid crystal display device comprising: first and second pixels each having a liquid crystal element; a driver circuit; a first wiring; a second wiring; a third wiring; a fourth wiring; a fifth wiring; and a sixth wiring, wherein the first pixel is electrically connected to the driver circuit through the fifth wiring; the second pixel is electrically connected to the driver circuit through the sixth wiring; the driver circuit includes a shift register; the shift register includes a plurality of flip-flops; at least one of the plurality of flip-flops includes a first transistor, a second transistor, a third transistor, and a fourth transistor; a first terminal of the first transistor is electrically connected to the first wiring, a second terminal of the first transistor is electrically connected to a gate terminal of the second transistor, and a gate terminal of the first transistor is electrically connected to the fifth wiring; a first terminal of the second transistor is electrically connected to the third wiring, and a second terminal of the second transistor is electrically connected to the sixth wiring; a first terminal of the third transistor is electrically connected to the second wiring, a second terminal of the third transistor is electrically connected to the gate terminal of the second transistor, and a gate terminal of the third transistor is electrically connected to the fourth wiring; and a first terminal of the fourth transistor is electrically connected to the second wiring, a second terminal of the fourth transistor is electrically connected to the sixth wiring, and a gate terminal of the fourth transistor is electrically connected to the fourth wiring.