Patent ID: 8736539

Claim:
A semiconductor device comprising: a first transistor; a second transistor, wherein one of a source and a drain of the second transistor is electrically connected to one of a source and a drain of the first transistor; a third transistor, wherein one of a source and of a drain of the third transistor is electrically connected to a gate of the first transistor, and wherein a gate of the third transistor is electrically connected to a gate of the second transistor; a fourth transistor, wherein one of a source and a drain of the fourth transistor is electrically connected to the gate of the second transistor, and wherein the other one of the source and the drain of the fourth transistor is electrically connected to the other one of the source and the drain of the first transistor; a fifth transistor, wherein one of a source and a drain of the fifth transistor is electrically connected to the gate of the second transistor, and wherein a gate of the fifth transistor is electrically connected to the one of the source and the drain of the first transistor; and a sixth transistor, wherein one of a source and a drain of the sixth transistor is electrically connected to a gate of the fourth transistor, wherein the other one of the source and the drain of the sixth transistor is electrically connected to the other one of the source and the drain of the first transistor, and wherein a gate of the sixth transistor is electrically connected to the other one of the source and the drain of the first transistor.