Patent ID: 8872751

Claim:
A liquid crystal display device comprising: a driver circuit comprising a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, and a sixth transistor; and a pixel comprising a liquid crystal element, wherein a gate of the first transistor is electrically connected to one of a source and a drain of the first transistor, wherein the other of the source and the drain of the first transistor is electrically connected to a gate of the third transistor, wherein a gate of the second transistor is electrically connected to the gate of the first transistor, wherein the gate of the second transistor is electrically connected to one of a source and a drain of the second transistor, wherein the other of the source and the drain of the second transistor is electrically connected to a gate of the fourth transistor, wherein one of a source and a drain of the third transistor is electrically connected to one of a source and a drain of the fourth transistor, wherein the other of the source and the drain of the third transistor is electrically connected to the other of the source and the drain of the fourth transistor, wherein a gate of the fifth transistor is electrically connected to a first line, wherein a gate of the sixth transistor is electrically connected to a second line, wherein one of a source and a drain of the fifth transistor is electrically connected to the gate of the fourth transistor, wherein one of a source and a drain of the sixth transistor is electrically connected to the gate of the third transistor, and wherein on and off of both the first transistor and the second transistor are configured to be controlled by a first input signal input to both the gate of the first transistor and the gate of the second transistor.