Patent ID: 8854399

Claim:
A display device comprising: a display panel comprising a plurality of pixels; a gray scale converter for converting gray levels of pixel data signals of a current frame by multiplying the pixel data signals of the current frame by a scale factor of the current frame; and a scale factor generator configured to compare a conversion current value with an overcurrent prevention current value and to compare the conversion current value with a threshold current value of the display panel that is less than the overcurrent prevention current value, and to generate the scale factor of the current frame by applying one of a first equation utilizing the overcurrent prevention current value or a second equation different from the first equation and utilizing the threshold current value, wherein the conversion current value is a current value projected to be consumed by the display panel utilizing the pixel data signals of the current frame multiplied by a scale factor of a previous frame, and wherein the overcurrent prevention current value and the threshold current value are less than a maximum current consumption value of the display panel.