Method of driving display panel and display apparatus for performing the same
View Patent ↗A method of driving a display panel includes generating compensated grayscale data by increasing grayscale data corresponding to an N-th gate line of a plurality of gate lines of the display panel, where N is a natural number, generating a data voltage based on the compensated grayscale data, outputting the data voltage to the display panel including a plurality of pixel electrodes and a plurality of data lines, where each of the plurality of data lines is alternately connected to the plurality of pixel electrodes in a first pixel column and the plurality of pixel electrodes in a second pixel column, generating a storage voltage having a first level and a second level, where the second level is lower than the first level, and applying the storage voltage to the display panel.
1. A method of driving a display panel, the method comprising:
generating compensated grayscale data by increasing grayscale data corresponding to an N-th gate line of a plurality of gate lines of the display panel, wherein N is a natural number;
generating, by a data driver, a data voltage based on the compensated grayscale data, and outputting the data voltage to the display panel including a plurality of pixel electrodes and a plurality of data lines, wherein each of the plurality of data lines is alternately connected to the plurality of pixel electrodes in a first pixel column and the plurality of pixel electrodes in a second pixel column;
generating, by a storage voltage generator, a storage voltage having a first level and a second level, wherein the second level is lower than the first level; and
applying, by the storage voltage generator, the storage voltage to a storage electrode of the display panel,
wherein the storage voltage is applied to the display panel based on a gate signal from a gate line of the plurality of gate lines, and
wherein the grayscale data corresponding to the plurality of data lines except for the grayscale data corresponding to an M-th data line of the plurality of data lines are increased when a display error is detected at the grayscale data corresponding to the M-th data line, wherein M is a natural number.
2. The method of claim 1 , further comprising detecting the display error based on the grayscale data,
wherein the grayscale data is increased when the display error is detected.
3. The method of claim 2 , wherein the detecting the display error includes comparing previous grayscale data corresponding to an (N−1)-th gate line with present grayscale data corresponding to the N-th gate line.
4. The method of claim 3 , wherein the display error is detected when the previous grayscale data is greater than the present grayscale data.
5. A method of driving a display panel, the method comprising:
generating compensated grayscale data by increasing grayscale data corresponding to an N-th gate line of a plurality of gate lines of the display panel, wherein N is a natural number;
generating a data voltage based on the compensated grayscale data, and outputting the data voltage to the display panel including a plurality of pixel electrodes and a plurality of data lines, wherein each of the plurality of data lines is alternately connected to the plurality of pixel electrodes in a first pixel column and the plurality of pixel electrodes in a second pixel column;
generating a storage voltage having a first level and a second level, wherein the second level is lower than the first level; and
applying the storage voltage to the display panel,
wherein the storage voltage is applied to the display panel based on an (N+K)-th gate signal, wherein K is a natural number.
6. The method of claim 5 , wherein the storage voltage has the second level during an (N+K)-th horizontal cycle.
7. The method of claim 6 , wherein
a gate signal applied to the N-th gate line maintains a turned-on state during an (N−2)-th horizontal cycle, an (N−1)-th horizontal cycle and an N-th horizontal cycle,
the pixel electrode connected to the N-th gate line is precharged during the (N−2)-th horizontal cycle and the (N−1)-th horizontal cycle, and
K is greater than or equal to 3.
8. The method of claim 6 , wherein a gate signal applied to the N-th gate line maintains a turned-on state during an (N−1)-th horizontal cycle and an N-th horizontal cycle,
the pixel electrode connected to the N-th gate line is precharged during the (N−1)-th horizontal cycle, and
K is greater than or equal to 2.
9. The method of claim 1 , wherein a pixel of the display panel has a rectangular shape, and
a longitudinal side of the pixel is substantially parallel to the plurality of gate lines.
10. A display apparatus comprising:
a display panel comprising a plurality of pixel electrodes, a plurality of gate lines and a plurality of data lines, wherein each of the plurality of data lines is alternately connected to the plurality of pixel electrodes in a first pixel column and the plurality of pixel electrodes in a second pixel column;
a grayscale data compensating part which generates compensated grayscale data by increasing grayscale data corresponding to an N-th gate line, wherein N is a natural number;
a data driver which generates a data voltage based on the compensated grayscale data and outputs the data voltage to the display panel; and
a storage voltage generator which generates a storage voltage having a first level and a second level and applies the storage voltage to a storage electrode of the display panel,
wherein the second level is lower than the first level,
wherein the storage voltage generator is different from the data driver,
wherein the storage voltage is applied to the display panel based on a gate signal from a gate line of the plurality of gate lines, and
wherein the grayscale compensating part increases the grayscale data corresponding to the plurality of data lines except for the grayscale data corresponding to an M-th data line of the plurality of data lines when a display error is detected at the grayscale data corresponding to the M-th data line, wherein M is a natural number.
11. The display apparatus of claim 10 , further comprising an error detecting part which detects the display error based on the grayscale data,
wherein the grayscale data compensating part increases the grayscale data when the display error is detected.
12. The display apparatus of claim 11 , wherein the error detecting part compares previous grayscale data corresponding to an (N−1)-th gate line with present grayscale data corresponding to the N-th gate line to detect the display error.
13. The display apparatus of claim 12 , wherein the error detecting part detects the display error when the previous grayscale data is greater than the present grayscale data.
14. The display apparatus of claim 10 , further comprising a storage switch which applies the storage voltage to the storage electrode of the display panel, and
wherein the storage voltage is applied to the display panel based on an (N+K)-th gate signal, and K is a natural number.
15. The display apparatus of claim 14 , wherein the storage voltage has the second level during an (N+K)-th horizontal cycle.
16. The display apparatus of claim 15 , wherein
a gate signal applied to the N-th gate line maintains a turned-on state during an (N−2)-th horizontal cycle, an (N−1)-th horizontal cycle and an N-th horizontal cycle,
the pixel electrode connected to the N-th gate line is precharged during the (N−2)-th horizontal cycle and the (N−1)-th horizontal cycle, and
K is greater than or equal to 3.
17. The display apparatus of claim 15 , wherein a gate signal applied to the N-th gate line maintains a turned-on state during an (N−1)-th horizontal cycle and an N-th horizontal cycle,
the pixel electrode connected to the N-th gate line is precharged during the (N−1)-th horizontal cycle, and
K is greater than or equal to 2.
18. The display apparatus of claim 10 , wherein a pixel of the display panel has a rectangular shape, and
a longitudinal side of the pixel is substantially parallel to the plurality of gate lines.