Apparatus for driving a display panel with compensation for heat caused by proximity to light source, and method thereof

1. A method of driving a display panel, comprising:

providing a control signal and a grayscale signal, the control signal comprising a gate clock signal and a data clock signal;

providing a gate signal to the display panel based on the gate clock signal;

dividing the display panel into blocks according to distance from a light source to each of the blocks;

outputting a compensating signal of an n-th frame using look-up tables, the look-up tables respectively corresponding to the blocks of the display panel, and “n” being a natural number; and

converting the compensating signal of the n-th frame into a grayscale voltage and providing the grayscale voltages to each corresponding block of the display panel.

2. The method of claim 1 , wherein outputting the compensating signal of the n-th frame comprises:

storing a grayscale signal of an (n−1)-th frame;

selecting the look-up tables respectively corresponding to the blocks of the display panel; and

outputting the compensating signal of the n-th frame corresponding to the grayscale signal of the (n−1)-th frame and a grayscale signal of the n-th frame in each of the selected look-up tables.

3. The method of claim 2 , wherein the look-up tables respectively corresponding to the blocks of the display panel are selected in response to the control signal.

4. The method of claim 2 , wherein selecting the look-up tables respectively corresponding to the blocks of the display panel comprises:

counting a number of pulses of the gate clock signal,

wherein the look-up tables are selected according to the number of the pulses of the gate clock signal.

5. The method of claim 2 , wherein selecting the look-up tables respectively corresponding to the blocks of the display panel comprises:

counting a number of pulses of the data clock signal,

wherein the look-up tables are selected according to the number of pulses of the data clock signal.

6. The method of claim 2 , wherein the control signal further comprises a carry signal provided to a plurality of data driving chips, and the look-up tables respectively corresponding to the blocks of the display panel are selected in response to the carry signal.

7. The method of claim 2 , wherein the control signal further comprises a port designating signal designating a port through which the data clock signal is outputted, and the look-up tables respectively corresponding to the blocks of the display panel are selected in response to the port designating signal.

8. The method of claim 2 , wherein the look-up tables respectively corresponding to the blocks of the display panel are selected in response to a temperature signal of the display panel.

9. A driving unit of a display panel, the panel being divided into a plurality of blocks according to distance from a light source to each of the blocks, the driving unit comprising:

a control part to provide a control signal and a grayscale signal, the control signal comprising a gate clock signal and a data clock signal;

a gate driving part to provide a gate signal to the display panel based on the gate clock signal;

a grayscale compensating part to output compensating signals of an n-th frame using look-up tables, the look-up tables respectively corresponding to the blocks of the display panel, and “n” being a natural number; and

a data driving part to convert the compensating signal of the n-th frame into grayscale voltages and to provide the grayscale voltages to each corresponding block of the display panel.

10. The driving unit of claim 9 , wherein the grayscale compensating part comprises:

a storing part to store a grayscale signal of an (n−1)-th frame;

a plurality of look-up tables comprising information on the compensating signals of the n-th frame corresponding to the grayscale signals of the (n−1)-th frame and grayscale signals of the n-th frame;

a selecting part to select the look-up tables respectively corresponding to the blocks of the display panel; and

an output part to output the compensating signals of the n-th frame using each of the selected look-up tables.

11. The driving unit of claim 10 , wherein the selecting part selects the look-up tables in response to the control signal.

12. A display apparatus, comprising:

a light source to generate light;

a display panel to receive the light and comprising gate lines and data lines crossing each other, the display panel being divided into a plurality of blocks according to distance from the light source to each of the blocks;

a control part to provide a control signal and a grayscale signal, the control signal comprising a gate clock signal and a data clock signal;

a gate driving part to provide a gate signal to the gate lines based on the gate clock signal;

a grayscale compensating part to output a compensating signal of an n-th frame using look-up tables, the look-up tables respectively corresponding to the blocks of the display panel, and “n” being a natural number; and

a data driving part to convert the compensating signal of the n-th frame into a grayscale voltages and to provide the grayscale voltages to the data lines corresponding to each block of the display panel.

13. The display apparatus of claim 12 , wherein the grayscale compensating part comprises:

a storing part to store a grayscale signal of an (n−1)-th frame;

a plurality of look-up tables comprising information on the compensating signal of the n-th frame corresponding to the grayscale signal of the (n−1)-th frame and a grayscale signal of the n-th frame;

a selecting part to select the look-up tables respectively corresponding to the blocks of the display panel; and

an output part to output the compensating signal of the n-th frame using each of the selected look-up tables.

14. The display apparatus of claim 13 , wherein the selecting part selects the look-up tables in response to the control signal.

15. The display apparatus of claim 14 , wherein the selecting part comprises a counter to count a number of pulses of the control signal.

16. The display apparatus of claim 15 , wherein the light source is disposed adjacent to a side surface of the display panel substantially parallel with the gate lines, and the selecting part selects the look-up tables according to the number of pulses of the gate clock signal.

17. The display apparatus of claim 15 , wherein the light source is disposed adjacent to a side surface of the display panel substantially parallel with the data lines, and the selecting part selects the look-up tables according to the number of pulses of the data clock signal.

18. The display apparatus of claim 14 , wherein the data driving part comprises a plurality of data driving chips, the control signal further comprises a carry signal provided to the data driving chips, and the selecting part selects the look-up tables in response to the carry signal.

19. The display apparatus of claim 14 , wherein the control signal further comprises a port designating signal designating a port through which the data clock signal is outputted, and the selecting part selects the look-up tables in response to the port designating signal.

20. The display apparatus of claim 13 , wherein the selecting part selects the look-up tables in response to a temperature signal of the display panel.