Display device and method of driving the same

1. A method of driving a display device, the method comprising:

sub-sampling an original image signal;

generating a sub-image signal;

generating a sub-interpolated image signal corresponding to a current frame and a previous frame from the sub-image signal;

generating an interpolated image signal by realigning the sub-interpolated image signal; and

displaying a display image based on the interpolated image signal.

2. The method of claim 1 , wherein

the display device comprises a display panel including groups of pixels arranged in display blocks,

the display image is displayed on the display panel,

the sub-image signal corresponds to a sub-sample image, the sub-sample image including images, each sub-sample image sampled from k images into which a portion of the display image, displayed on the display blocks into which the display panel is divided, and

k is a natural number greater than or equal to two.

3. The method of claim 2 , wherein

each of the display blocks comprises k groups of pixels corresponding to the k images, and

the sub-sampling the original image signal comprises selecting any one of the k groups of pixels of each of the display blocks and sampling the original image signal corresponding to the selected k group of pixels.

4. The method of claim 2 , wherein the generating the sub-interpolated image signal is performed by k image interpolation chips, each of which generates the sub-interpolated image signal from the sub-image signal, which corresponds to the sub-sample image.

5. The method of claim 4 , wherein

a resolution of the display panel corresponds to a number of the display blocks multiplied by k, and

each of the k image interpolation chips processes a portion of the original image signal corresponding to an image having a resolution of 1/k of the resolution of the display panel.

6. A method of driving a display device including a display panel having display blocks, each of the display blocks including k groups of pixels, the method comprising:

sub-sampling an original image signal which corresponds to one group of the k groups of pixels included in one of the display blocks;

extracting a sub-image signal from the original image signal which is sub-sampled;

generating a sub-interpolated image signal from the sub-image signal;

generating an interpolated image signal corresponding to unsampled pixels of the k groups of pixels included in the one of the display blocks using the sub-interpolated image signal;

generating an interpolated frame based on the interpolated image signal; and

displaying a display image having the interpolated frame, wherein

the display image is displayed on the display panel,

the sub-image signal corresponds to a sub-sample image,

the sub-sample image includes images, each sub-sample image sampled from k images into which a portion of the display image, displayed on display blocks into which the display panel is divided, and

k is a natural number greater than or equal to two.

7. The method of claim 6 , wherein the sub-sampling the original image signal comprises:

selecting the one group of the k groups of pixels based on a rule; and

sampling the original image signal corresponding to the one group of the k groups of pixels which is selected based on the rule.

8. The method of claim 6 , wherein

a resolution of the display panel corresponds to a number of the display blocks multiplied by k, and

the generating the sub-interpolated image signal is performed by an image interpolation chip, the image interpolation chip configured to process an image signal corresponding having a resolution equal to 1/k of the resolution of the display panel.

9. The method of claim 6 , wherein the generating the interpolated image signal comprises interpolating the sub-interpolated image signal which is generated from the sub-image signal corresponding to the unsampled pixels.

10. A display device comprising:

a sub-sampler which sub-samples an original image signal and generates a sub-image signal;

a motion interpolator which generates a sub-interpolated image signal corresponding to a current frame and a previous frame from the sub-image signal;

an image realigner which realigns the sub-interpolated image signal and outputs an interpolated image signal; and

a display panel which displays a display image having an interpolated frame corresponding to the interpolated image signal.

11. The display device of claim 10 , wherein

the display panel comprises display blocks each including k groups of pixels,

the sub-image signal corresponds to a sub-sample image, the sub-sample image including images, each sub-sample image sampled, based on a specified rule, from k images into which a portion of the display image is divided, and

k is a natural number greater than or equal to two.