Display device and a method for driving the same

A method for driving a display device, the method comprising:

• comparing first partial image data that is a portion of image data of a previous frame with second partial image data that is a portion of image data of a current frame, at a first time of the current frame, in a first mode in which a still image is displayed;
• when the first partial image data and the second partial image data are different from each other, switching the first mode to a second mode in which a moving image is displayed, and delaying an image to be displayed by a predetermined time, wherein the image to be displayed corresponds to the current frame;
• and
• increasing a frequency of at least some scan signals applied to pixels, in the second mode.

A display device, comprising:

• a display panel including pixels;
• an image determiner configured to compare first partial image data of a previous frame with second partial image data of a current frame, at a first time of the current frame, in a first mode in which a still image is displayed;
• switch the first mode to a second mode in which a moving image is displayed when the first partial image data and the second partial image data are different from each other, and delay an image of the current frame to be displayed by a predetermined time;
• and
• a driver configured to increase a frequency of first scan signals applied to the pixels, in the second mode.