Patent ID: 8179191

Claim:
A booster circuit comprising: a first transistor; a second transistor; a third transistor; a fourth transistor; a first capacitor; a second capacitor; a third capacitor; a power supply terminal; and an inverter, wherein one electrode of the first transistor is electrically connected to the power supply terminal maintained at a predetermined potential, wherein the other electrode of the first transistor is electrically connected to a gate electrode of the third transistor and one electrode of the fourth transistor, wherein the other electrode of the fourth transistor is electrically connected to one electrode of the second transistor, wherein the other electrode of the second transistor is electrically connected to a gate electrode of the first transistor, wherein a gate electrode of the fourth transistor is electrically connected to one electrode of the third transistor, wherein the other electrode of the third transistor is electrically connected to the one electrode of the first transistor, wherein an output of the inverter is electrically connected to a gate electrode of the second transistor and one electrode of the first capacitor, wherein the other electrode of the first capacitor is electrically connected to the other electrode of the first transistor, the gate electrode of the third transistor and the one electrode of the fourth transistor, wherein an input of the inverter is electrically connected to one electrode of the second capacitor and one electrode of the third capacitor, wherein the other electrode of the second capacitor is electrically connected to the gate of the first transistor and the other electrode of the second transistor, and wherein the other electrode of the third capacitor is electrically connected to the gate of the fourth transistor and the one electrode of the third transistor.