Patent ID: 8179170
Filing Date: 2012-05-15
Classification: G09G,H01L,H03K

Abstract:
1. A semiconductor device comprising: a first transistor; a second transistor; a third transistor; a fourth transistor; a first line applying a first potential; a second line applying a second potential; and a circuit configured to generate a third potential which is different from the first potential and the second potential; wherein one of a source and a drain of the first transistor and one of a source and a drain of the third transistor are electrically connected to the first line; wherein the other of the source and the drain of the first 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 the second line; wherein a gate of the second transistor is electrically connected to the other of the source and the drain of the third transistor and to one of a source and a drain of the fourth transistor; wherein the other of the source and the drain of the fourth transistor is electrically connected to the circuit; wherein a first signal is inputted to gates of the first transistor, the third transistor and the fourth transistor; and wherein a second signal is outputted from the other of the source and the drain of the first transistor and the one of the source and the drain of the second transistor.