Patent ID: 8836380

Claim:
A bootstrap circuit, comprising: a first field effect transistor having one terminal to which a first electrical potential is given; a second field effect transistor having one terminal to which a second electrical potential smaller than the first electrical potential is given; a controller that controls each electrical potential of each control terminal of the first field effect transistor and the second field effect transistor; a capacitor element having one end connected to the control terminal of the first field effect transistor, the capacitor element being charged by the control of the controller; and a load element connected between another terminal of the first field effect transistor and another terminal of the second field effect transistor and another end of the capacitor element is connected to the another terminal of the second field effect transistor wherein the load element is a depletion-type field effect transistor, a control terminal of the depletion-type field effect transistor being connected to one terminal of the depletion-type field effect transistor.