Display device including power control device

A display device, comprising:

• a plurality of pixels;
• and
• a power controller to supply a first power source voltage and a second power source voltage to the plurality of pixels,
• wherein the power controller outputs the first power source voltage to a first power source voltage output terminal by converting an input voltage, controls the first power source voltage by controlling a duty of a switch according to a feedback voltage input through a feedback voltage corresponding to the first power source voltage, and prevents the first power source voltage from increasing higher than a breakdown voltage of the switch using a diode coupled between the first power source voltage output terminal and a feedback terminal, wherein:
• the power controller includes an inductor coupled to an input terminal to which the input voltage is input, and
• the switch includes:
• a first switch coupled between the inductor and the first power source voltage output terminal, and
• a second switch coupled between the inductor and a ground.