Display device and method of driving display device

A display device comprising:

• a power supplying unit configured to output a high-side output potential and a low-side output potential;
• a display unit in which a plurality of pixels are arranged and which receives power supply from the power supplying unit;
• a voltage detecting unit configured to detect at least one of a high-side applied potential and a low-side applied potential which are applied to at least one of the pixels inside the display unit;
• and
• a voltage regulating unit configured to regulate at least one of the high-side output potential and the low-side output potential that are outputted from the power supplying unit such that any one of the following potential differences reaches a predetermined potential difference:
• a potential difference between the high-side applied potential and a reference potential;
• a potential difference between the low-side applied potential and the reference potential;
• and a potential difference between the high-side applied potential and the low-side applied potential,
• wherein the display unit is configured to alternate between image display periods in which at least part of the pixels are used for image display and black display periods in which all of the pixels are used for black display, and
• the voltage detecting unit is configured to detect the at least one of the high-side applied potential and the low-side applied potential in at least part of each of the image display periods, and refrain from detecting the at least one of the high-side applied potential and the low-side applied potential in the black display periods.