Patent ID: 7138831

Claim:
A level conversion circuit comprising: a first insulated gate field effect transistor of a first conductivity type for transferring an input signal applied to an input node to a first internal node according to a first clock signal from a first clock input node; a MOS type capacitance element formed of an insulated gate type field effect transistor and connected between a second clock input node receiving a second clock signal and said first internal node for selectively forming a capacitance according to a potential difference between said first internal node and said second clock input node; and a clocked inverter activated, when said first insulated gate field effect transistor is non-conductive, according to one of said first clock signal and a clock signal corresponding to the first clock signal and said second clock signal, and inverting, when activated, a potential on said first internal node to generate, on a second internal node, a signal having an amplitude larger than an amplitude of said input signal.