Patent ID: 8599115

Claim:
A semiconductor device comprising: a first transistor; a second transistor; a third transistor; a fourth transistor; a fifth transistor; a first wiring; a second wiring; and a capacitor, wherein one of a source or drain of the first transistor is electrically connected to the first wiring, wherein the other of the source or drain of the first transistor is electrically connected to one electrode of the capacitor, one of a source or drain of the second transistor and a gate of the third transistor, wherein the other of the source or drain of the second transistor is electrically connected to the second wiring, wherein the second wiring is electrically connected to one of a source or drain of the third transistor, wherein the other of the source or drain of the third transistor is electrically connected to the other electrode of the capacitor and a pixel electrode, wherein the third transistor includes two transistors which are connected in parallel, wherein the fourth transistor is electrically connected between the one of the source or drain of the second transistor and the gate of the third transistor, wherein the fifth transistor is electrically connected to the other of the source or drain of the third transistor, and wherein the first transistor, the second transistor, the third transistor, the fourth transistor and the fifth transistor include an oxide semiconductor.