Display device

A display device comprising:

• a display panel having a display area and comprising a plurality of pixels at the display area;
• a power supply configured to supply a first power source voltage to the pixels through a first power line extending to the display area, and to supply a second power source voltage lower than the first power source voltage to the pixels through a second power line comprising a first side power line extending in a first peripheral area located at a first side of the display area of the display panel and a second side power line extending in a second peripheral area located at a second side of the display area of the display panel;
• a sensor configured to detect a first detection value and a second detection value, the first detection value being a current of the first side power line and the second detection value being a current of the second side power line;
• and
• a controller configured to control an operation of the power supply, based on a difference between the first detection value and the second detection value.