Liquid crystal display and method of driving the same

1. A liquid crystal display comprising:

a liquid crystal panel;

a timing controller which receives previous image data and current image data, corrects or does not correct the current image data according to a reference bit of conversion image data generated using the previous image data, and outputs a display image signal to the liquid crystal panel; and

a data driver which receives the display image signal and applies a data voltage corresponding to the display image signal to the liquid crystal panel,

wherein each of the current image data and the previous image data is divided into a plurality of groups, each group having one or more bits, and any one of the groups comprises one or more original reference bits which are converted into the reference bit.

2. The liquid crystal display of claim 1 , wherein the reference bit is a most significant bit of the conversion image data.

3. The liquid crystal display of claim 1 , wherein the display image signal is generated using a correction value which corresponds to the conversion image data and the current image data.

4. The liquid crystal display of claim 3 , wherein the correction value corresponding to the conversion image data and the current image data is stored in a lookup table(LUT) at a coordinate corresponding to a combination of the conversion image data and the current image data.

5. The liquid crystal display of claim 4 , the current image data which is not listed in the LUT is corrected to a correction value by interpolation.

6. The liquid crystal display of claim 4 , wherein the LUT is divided into a first region which comprises correction values corresponding to combinations of the conversion image data and the current image data and a second region which does not include the correction values corresponding to the combinations of the conversion image data and the current image data, wherein when the combination of the conversion image data and the current image data is within the second region, the display image signal is substantially the same as the current image data.

7. The liquid crystal display of claim 1 , wherein the groups comprise first through third groups, and the first group comprises the original reference bits, wherein bits in the first group are combined with each other, bits in the second group are maintained unchanged, and bits in the third group are removed to generate the conversion image data.

8. The liquid crystal display of claim 7 , wherein the first group comprises 2 bits, the second group comprises 3 bits, and the third group comprises 3 bits, wherein the 2 bits in the first group are combined into 1 bit, and the conversion image data is generated to be a 4-bit signal.

9. The liquid crystal display of claim 7 , wherein the first group comprises 2 bits, the second group comprises 2 bits, and the third group comprises 2 bits, wherein the 2 bits in the first group are combined into 1 bit, and the conversion image data is generated to be a 3-bit signal.

10. The liquid crystal display of claim 1 , wherein the previous image data is corrected to obtain previous first correction image data, and the current image data is corrected to obtain current first correction image data.

11. The liquid crystal display of claim 10 , wherein the timing controller outputs one of the current first correction image data and current second correction image data obtained by correcting the current first correction image data as the display image signal in response to a select signal which is generated according to the reference bit of the conversion image data.

12. The liquid crystal display of claim 11 , wherein the reference bit is the most significant bit of the conversion image data, and the display image signal is a first correction image signal when the select signal has a first level and a second correction image signal when the select signal has a second level.

13. The liquid crystal display of claim 11 , wherein gamma correction is performed to correct the previous image data or the current image data, and dynamic capacitance compensation is performed to correct the current first correction image data.

14. A liquid crystal display comprising:

a liquid crystal panel;

a timing controller which receives previous image data and current image data, corrects or does not correct the current image data according to a reference bit of conversion image data generated using the previous image data, and outputs a display image signal to the liquid crystal panel, wherein the conversion image data is updated when the current image data is different from the previous image data and is not updated when the current image data is substantially identical to the previous image data; and

a data driver which receives the display image signal and applies a data voltage corresponding to the display image signal to the liquid crystal panel,

wherein each of the current image data and the previous image data is divided into a plurality of groups, each group having one or more bits, and any one of the groups comprises one or more original reference bits which are converted into the reference bit.

15. The liquid crystal display of claim 14 , wherein the reference bit is a most significant bit of the conversion image data.

16. The liquid crystal display of claim 14 , wherein the display image signal is generated using a correction value which corresponds to the conversion image data and the current image data.

17. The liquid crystal display of claim 16 , wherein the correction value corresponding to the conversion image data and the current image data is stored in a lookup table(LUT) at a coordinate corresponding to a combination of the conversion image data and the current image data.

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

receiving conversion image data, which is generated by using previous image data, and current image data;

outputting a display image signal which is generated by correcting or not correcting the current image data according to a reference bit of the conversion image data; and

applying a data voltage corresponding to the display image signal to a liquid crystal panel and displaying an image corresponding to the data voltage on the liquid crystal panel,

wherein each of the current image data and the previous image data is divided into a plurality of groups, each group having one or more bits, and any one of the groups comprises one or more original reference bits which are converted into the reference bit.

19. The method of claim 18 , wherein the reference bit is a most significant bit of the conversion image data.