Patent ID: 7679585
Filing Date: 2010-03-16
Classification: G09G,H01L

Abstract:
1. A semiconductor device comprising a first transistor, a second transistor, a third transistor, a fourth transistor, a first switch, a second switch, a capacitor, a first wire, a second wire, a third wire, and a fourth wire, wherein a first terminal of the first transistor is electrically connected to a second terminal of the second transistor, a second terminal of the first transistor is electrically connected to the second wire through the first switch, and a gate terminal of the first transistor is electrically connected to a first terminal of the third transistor; wherein a first terminal of the fourth transistor is electrically connected to the second terminal of the second transistor, a second terminal of the fourth transistor is electrically connected to the second wire through the second switch, and a gate terminal of the fourth transistor is electrically connected to the first terminal of the third transistor; wherein a first terminal of the second transistor is electrically connected to the first wire; wherein a gate terminal and a second terminal of the third transistor are electrically connected to the fourth wire and the third wire, respectively; wherein the capacitor is electrically connected between the gate terminal and the first terminal of the first transistor; wherein the capacitor is electrically connected between the gate terminal and the first terminal of the fourth transistor; and wherein the first wire is a video signal line supplied with a signal depending on at least image data.