Patent ID: 7248031

Claim:
An electric circuit for outputting an output electric potential through an output terminal on the basis of an input electric potential which is inputted to an input terminal, comprising: a first transistor; a rectification type device having first and second electrodes, to the first electrode of which, the input electric potential is inputted; a second transistor for inputting a power supply electric potential to the second electrode and for converging an electric potential of the second electrode with a first electric potential; and a third transistor for outputting an output electric potential from a source of the first transistor, when the first electric potential is inputted to a gate electrode of the first transistor, wherein the rectifying device includes a fourth transistor, wherein one of the first electrode and the second electrode is one of a source and a drain of the fourth transistor and a gate of the fourth transistor, and wherein the other of the first electrode and the second electrode is the other of the source and the drain of the fourth transistor.