Display device

A display device comprising:

• a display panel comprising a first display area and a second display area, and which displays a first image through the first and second display areas in a first mode, and displays a second image through the first display area in a second mode;
• a panel driver, which drives the display panel in the first mode or the second mode;
• and
• a driving controller, which controls a drive of the panel driver, the driving controller comprising:
• a compensation determination block, which is activated after the second mode is switched to the first mode and generates a compensation value based on a final afterimage component calculated using an afterimage algorithm obtained by a combination of a first afterimage calculation equation and a second afterimage calculation equation;
• and
• a data compensation block, which receives a second image signal corresponding to the second display area and reflects the compensation value to the second image signal to generate a second compensation image signal,
• wherein the afterimage algorithm is defined by following Equation:
• f(x)=f1(x)+f2(x),
• where f1(x) denotes the afterimage algorithm, f1(x) denotes the first afterimage calculation equation, and f2(x) denotes the second afterimage calculation equation,
• wherein the first afterimage calculation equation f1(x) is defined by following Equation:
• f1(x)=aebx,
• the second afterimage calculation equation f2(x) is defined by one of following Equations:
• f2(x)=Rb+cx+d,
• f2(x)=cx+d, and
• f2(x)=cedx,
• where Rb denotes a ratio obtained by dividing a luminance of the target image by a self-luminance, and each of a, b, c and d is a constant.