Display device preliminary class

A display apparatus, comprising:

• a display panel including a plurality of pixels;
• a timing controller configured to generate image data, a data control signal, and a gate control signal based on an input image signal and an input control signal for an input image;
• a data driver configured to generate a data signal for an output image based on the image data and the data control signal and supplies the data signal to the plurality of pixels;
• and
• a gate driver configured to generate a gate signal based on the gate control signal and supply the gate signal for the output image to the plurality of pixels,
• wherein the timing controller is further configured to:
• detect a frame period corresponding to a frame rate of the input image,
• compare the detected frame period and a critical period, and
• responsive to determining that the detected frame period is longer than the critical period based on the comparison, insert a sub frame duration to output active data for image refresh after outputting active data of an output frame duration corresponding to the output image.