Patent ID: 8456402

Claim:
A display device comprising: a pixel portion; a gate line driver circuit; and a source line drive circuit, wherein the gate line driver circuit comprising: a first thin film transistor; a second thin film transistor; a third thin film transistor; a fourth thin film transistor; a fifth thin film transistor; a first wiring; and a second wiring, wherein one of source or drain of the first thin film transistor is electrically connected to the first wiring, wherein the other of source or drain of the first thin film transistor is electrically connected to one of source or drain of the second thin film transistor, wherein a gate of the first thin film transistor is electrically connected to one of source or drain of the third thin film transistor, wherein the other of source or drain of the second thin film transistor is electrically connected to the second wiring, wherein a gate of the second thin film transistor is electrically connected to one of source or drain of the fourth thin film transistor, wherein the other of source or drain of the third thin film transistor is electrically connected to the second wiring, wherein the one of source or drain of the fourth thin film transistor is electrically connected to one of source or drain of the fifth thin film transistor, wherein the other of source or drain of the fourth thin film transistor is electrically connected to a gate of the fourth thin film transistor, and wherein the other of source or drain of the fifth thin film transistor is electrically connected to the second wiring.