Patent ID: 8514164

Claim:
A display driver circuit including an input terminal to which an input voltage is supplied, an output terminal for outputting an output voltage to a vertical line of a display panel, an output mode in which the output voltage is supplied in response to the input voltage, and a transition mode in which a voltage value of the input voltage is changed, the display driver circuit comprising: a differential amplification part having a first input node connected to the input terminal, a second input node, and a first output node, the differential amplification part outputting a first voltage from the first output node, the first voltage corresponding to a difference in voltages supplied to the first and second input nodes; a first capacitance element connected between a first supply node connected to the first output node of the differential amplification part and an intermediate node connected to the second input node of the differential amplification part; an output part having an input-output node, a first driving transistor connected between a first reference node and the input-output node, and a second driving transistor connected between the input-output node and a second reference node, the output part supplying an output current generated by the first and second driving transistors to the intermediate node through the input- output node; an output switch connected between the input-output node of the output part and the output terminal, the output switch being turned on in the output mode and turned off in the transition mode; a first supply switch connected between the first supply node and a third reference node, the first supply switch being turned off in the output mode and turned on in the transition mode, a voltage supplied to the third reference node having a lower impedance than an impedance of the first voltage from the differential amplification part; an input switch connected between the intermediate node and the input terminal, the input switch being turned off in the output mode and turned on in the transition mode; and a supply switch part for causing the output part to execute supply of the output current in the output mode and causing the output part to discontinue supply of the output current in the transition mode.