Driving controller, display apparatus including the same and method of driving display panel using the same

1. A driving controller set comprising:

a net power control setter configured to determine a first scale factor for adjusting a grayscale value of (N+1)-th frame data based on a load of N-th frame data and a net power control reference value, wherein N is an integer equal to or greater than two;

a data clamper configured to determine a second scale factor for adjusting a grayscale value of the N-th frame data based on a load of (N−1)-th frame data and the N-th frame data, wherein a data signal is generated using at least one of the first scale factor and the second scale factor;

a data line formed of at least one conductive material; and

a data driver electrically connected to each of the net power control setter, the data clamper, and the data line, configured to convert the data signal into a data voltage, and configured to output the data voltage to the data line.

2. The driving controller set of claim 1 , wherein the data clamper is activated when the (N−1)-th frame data is different from the N-th frame data, and

wherein the data clamper is deactivated when the (N−1)-th frame data is same as the N-th frame data.

3. The driving controller set of claim 1 , wherein the data clamper is configured to receive the load of the (N−1)-th frame data, a net power control signal of an (N−1)-th frame, and the N-th frame data.

4. The driving controller set of claim 3 , wherein when the net power control signal of the (N−1)-th frame is inactive, the second scale factor gradually decreases as the load of the (N−1)-th frame data increases from 0% to the net power control reference value.

5. The driving controller set of claim 4 , wherein when the net power control signal of the (N−1)-th frame is active, the second scale factor gradually decreases as the load of the (N−1)-th frame data increases from the net power control reference value to 100%.

6. The driving controller set of claim 1 , wherein when the net power control signal of the (N−1)-th frame is inactive, the second scale factor is fixed regardless of the load of the (N−1)-th frame data.

7. The driving controller set of claim 6 , wherein when the net power control signal of the (N−1)-th frame is active, the second scale factor is fixed regardless of the load of the (N−1)-th frame data.

8. The driving controller set of claim 1 , further comprising a load sum calculator configured to receive the N-th frame data and to calculate a sum of total grayscale values of the N-th frame data.

9. The driving controller set of claim 8 , further comprising a load calculator configured to receive the sum of the total grayscale values of the N-th frame data and to calculate the load of the N-th frame data.

10. The driving controller set of claim 9 , wherein the data clamper is configured to receive the load of the N-th frame data from the load calculator.

11. The driving controller set of claim 1 , wherein a final scale factor of the (N+1)-th frame data is determined by multiplying the first scale factor and the second scale factor.

12. A display apparatus comprising:

a display panel comprising a data line and a pixel electrically connected to the data line, wherein the data line is formed of at least one conductive material;

a driving controller comprising a net power control setter and a data clamper, wherein the net power control setter is configured to determine a first scale factor for adjusting a grayscale value of (N+1)-th frame data based on a load of N-th frame data and a net power control reference value, wherein the data damper is configured to determine a second scale factor for adjusting a grayscale value of the N-th frame data based on a load of (N−1)-th frame data and the N-th frame data, wherein N is an integer equal to or greater than two, and wherein the driving controller is configured to generate a data signal based on at least one of the first scale factor and the second scale factor; and

a data driver electrically connected to each of the driving controller and the display panel, configured to convert the data signal into a data voltage, and configured to output the data voltage through the data line to the pixel to control luminance of the pixel.

13. The display apparatus of claim 12 , wherein the data clamper is activated when the (N−1)-th frame data is different from the N-th frame data, and

wherein the data clamper is deactivated when the (N−1)-th frame data is same as the N-th frame data.

14. The display apparatus of claim 12 , wherein the data clamper is configured to receive the load of the (N−1)-th frame data, a net power control signal of an (N−1)-th frame, and the N-th frame data.

15. The display apparatus of claim 12 , wherein the driving controller further comprises a load sum calculator configured to receive the N-th frame data and to calculate a sum of total grayscale values of the N-th frame data.

16. The display apparatus of claim 15 , wherein the driving controller further comprises a load calculator configured to receive the sum of the total gray scale values of the N-th frame data and to calculate the load of the N-th frame data.

17. The display apparatus of claim 16 , wherein the data clamper is configured to receive the load of the N-th frame data from the load calculator.

18. A method of driving a display panel, the method comprising:

determining a first scale factor for adjusting a grayscale value of (N+1)-th frame data based on a load of N-th frame data and a net power control reference value;

determining a second scale factor for adjusting a grayscale value of the N-th frame data based on a load of (N−1)-th frame data and the N-th frame data;

generating a data signal using at least one of the first scale factor and the second scale factor;

converting the data signal into a data voltage; and

outputting the data voltage through a data line to a pixel of the display panel to control luminance of the pixel,

wherein N is an integer equal to or greater than two.

19. The method of claim 18 , wherein the second scale factor is generated when the (N−1)-th frame data is different from the N-th frame data, and

wherein the second scale factor is not generated when the (N−1)-th frame data is same as the N-th frame data.

20. The method of claim 18 , further comprising determining a final scale factor of the (N+1)-th frame data by multiplying the first scale factor and the second scale factor.