Importance

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Abstract

An output buffer circuit includes a first transistor supplying a first high-voltage power supply voltage in a case of being ON in response to a voltage of an input signal received through a gate; a second transistor supplying a second high-voltage power supply voltage in the case of being ON in response to a voltage of the input signal received through a gate; an output control part that shifts a transistor, of the first and second transistors, being ON to OFF at a time of voltage change of the input signal by changing the voltage in the gate thereof, and turns a transistor being OFF to ON by changing the voltage in the gate thereof at a rate of change based on a current value controlled by a bias voltage, and a bias modulation part that sets a voltage value of the bias voltage to a designated voltage value.

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First Claim