Display apparatus and method of operating the same

A method of operating a display apparatus, the method comprising:

• generating an initial power voltage;
• receiving a sensed power voltage;
• generating a calculated power voltage obtained by inversely amplifying a difference between the initial power voltage and the sensed power voltage;
• and
• outputting a compensated power voltage to a second control electrode of a driving transistor of a pixel based on the initial power voltage and the calculated power voltage.

An electronic apparatus comprising:

• a display panel including a pixel;
• a gate driver configured to apply a gate signal to the pixel;
• a data driver configured to apply a data voltage to the pixel;
• an emission driver configured to apply an emission signal to the pixel;
• a power voltage generator configured to receive a sensed power voltage from the display panel and configured to output a compensated power voltage to the display panel;
• a driving controller configured to control the gate driver, the data driver, the emission driver and the power voltage generator based on an input control signal;
• and
• a processor configured to output the input control signal,
• wherein the pixel comprises:
• a driving transistor including a first control electrode configured to receive the data voltage, a second control electrode connected to a hold capacitor, a first electrode configured to receive a first power voltage and a second electrode connected to a first electrode of a light emitting element;
• the hold capacitor including a first electrode configured to receive the compensated power voltage and a second electrode connected to the second control electrode of the driving transistor;
• and
• the light emitting element including the first electrode configured to receive the first power voltage and a second electrode configured to receive a second power voltage.