Patent ID: 7948453
Filing Date: 2011-05-24
Classification: G09G

Abstract:
1. A semiconductor device comprising: a video-signal current source; a first transistor; a second transistor; a first switch, wherein a first terminal of the first switch is electrically connected to the video-signal current source, and a second terminal of the first switch is electrically connected to one of a source and a drain of the first transistor; a second switch, wherein a first terminal of the second switch is electrically connected to a first power source, and a second terminal of the second switch is electrically connected to the one of the source and the drain of the first transistor; a third switch, wherein a first terminal of the third switch is electrically connected to the other of the source and the drain of the first transistor, and a second terminal of the third switch is electrically connected to a second power source; a fourth switch, wherein a first terminal of the fourth switch is electrically connected to the other of the source and the drain of the first transistor, and a second terminal of the fourth switch is electrically connected to a data line; a fifth switch, wherein a first terminal of the fifth switch is electrically connected to the video-signal current source, and a second terminal of the fifth switch is electrically connected to one of a source and a drain of the second transistor; a sixth switch, wherein a first terminal of the sixth switch is electrically connected to the first power source, and a second terminal of the sixth switch is electrically connected to the one of the source and the drain of the second transistor; and a seventh switch, wherein a first terminal of the seventh switch is electrically connected to the other of the source and the drain of the second transistor, and a second terminal of the seventh switch is electrically connected to the second power source.