Patent ID: 8339530

Claim:
A display device comprising: a signal line; a power supply line; a first pixel comprising a first display region, a driving transistor, a first switch, a second switch, a third switch, a fourth switch, and a capacitor element; and a second pixel comprising a second display region, wherein the signal line is electrically connected to a first terminal of the first switch, wherein a first terminal of the capacitor element is electrically connected to a second terminal of the first switch, wherein a second terminal of the capacitor element is electrically connected to a gate of the driving transistor and a first terminal of the second switch, wherein one of a source and a drain of the driving transistor is electrically connected to a second terminal of the second switch and the first display region, wherein the other of the source and the drain of the driving transistor is electrically connected to the power supply line, and wherein an area of the first display region is different from an area of the second display region.