Patent ID: 7746311

Claim:
A semiconductor device comprising: n analog buffer circuits directly connected in parallel, wherein n is a natural number equal to or greater than 2; each of the n analog buffer circuits having a differential circuit and a current mirror circuit, wherein the differential circuit comprising a first thin film transistor and a second thin film transistor, wherein one of source and drain of the first thin film transistor is electrically connected to one of source and drain of the second thin film transistor, and wherein the other one of source and drain of the second thin film transistor is directly connected to a gate electrode of the second thin film transistor, wherein the current mirror circuit comprising a third thin film transistor and a fourth thin film transistor, wherein one of source and drain of the third thin film transistor is electrically connected to one of source and drain of the fourth thin film transistor, and wherein the other one of source and drain of the third thin film transistor is electrically connected to a gate electrode of the third thin film transistor, wherein the n analog buffer circuits are inputted a signal, simultaneously.