Method for driving display panel and display panel

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

inputting a frame of image;

determining a chromatic aberration level of the frame of image;

adjusting a gamma curve value according to the chromatic aberration level of the frame of image; and

driving the display panel by using the adjusted gamma curve value;

wherein the step of adjusting a gamma curve value according to the chromatic aberration level of the frame of image comprises:

decreasing the gamma curve value if the chromatic aberration level of the frame of image is greater than or equal to a preset threshold;

wherein the step of decreasing the gamma curve value if the chromatic aberration level of the frame of image is greater than or equal to a preset threshold comprises:

decreasing the gamma curve value if the chromatic aberration level of the frame of image is greater than or equal to 0.02 when a viewing angle is 30 degrees;

wherein the step of determining a chromatic aberration level of the frame of image comprises:

obtaining a signal of the frame of image progressively scanned by the display panel;

calculating a color saturation level of each pixel in the frame of image to form a color saturation value;

collecting and accumulating the color saturation values of each row of pixels respectively to form line buffer data and storing the line buffer data in a line buffer;

accumulating the line buffer data of all rows progressively to form frame buffer data;

comparing all the color saturation values in the frame buffer data to obtain by calculation a maximum color saturation value to represent a color saturation level of the frame of image; and

determining the chromatic aberration level of each frame of image by using the maximum saturation value of each frame of image, wherein a larger color saturation value indicates a higher chromatic aberration level.

2. The method for driving a display panel according to claim 1 , wherein a higher chromatic aberration level indicates a larger value by which the gamma curve value is decreased.

3. The method for driving a display panel according to claim 1 , wherein the step of adjusting a gamma curve value according to the chromatic aberration level of the frame of image comprises:

maintaining an original gamma curve value if the chromatic aberration level of the frame of image is less than the preset threshold.

4. The method for driving a display panel according to claim 1 , wherein the step of decreasing the gamma curve value if the chromatic aberration level of the frame of image is greater than or equal to the preset threshold comprises:

maintaining an original gamma curve value if the chromatic aberration level of the frame of image is less than or equal to 0.02 when a viewing angle is 30 degrees.

5. The method for driving a display panel according to claim 1 , wherein the maximum color saturation value falls within a first range or a second range;

when the maximum color saturation value falls within the first range, a larger color saturation value indicates a higher chromatic aberration level and a larger value by which the gamma curve value is decreased; and

when the maximum color saturation value falls within the second range, a larger color saturation value indicates a lower chromatic aberration level, and a smaller value by which the gamma curve value is decreased.

6. The method for driving a display panel according to claim 5 , wherein for the color saturation value, the first range is [0, 60) and the second range is [60, 120].

7. The method for driving a display panel according to claim 1 , wherein the step of calculating a color saturation level of each pixel in the frame of image to form a color saturation value comprises:

selecting each row of pixels in the frame of image by using a multiple of 2 as an interval, and calculating a color saturation level of each of the selected pixels at intervals to form a color saturation value, wherein

a formula of calculating the color saturation value is:

a formula S =max( R,G,B )−min( R,G,B ), wherein S represents the color saturation value, R represents a gray level of a red sub-pixel, G represents a gray level of a green sub-pixel, and B represents a gray level of a blue sub-pixel.

8. The method for driving a display panel according to claim 7 , wherein a data size of each color saturation value is less than or equal to 6 bits.

9. The method for driving a display panel according to claim 7 , wherein the step of adjusting a gamma curve value according to the chromatic aberration level of the frame of image comprises:

finding the adjusted gamma curve value from a gamma adjustment lookup table according to the color saturation value of the frame of image and controlling and adjusting the gamma curve value.

10. The method for driving a display panel according to claim 9 , wherein the gamma adjustment lookup table is formed in advance by setting a corresponding gamma adjustment value for each of different color saturations; and

when the color saturation value is 60, a difference between the adjusted gamma curve value and the original gamma curve value is the largest, and when the color saturation value is not equal to 60, a color saturation value farther away from 60 indicates a smaller difference between the gamma curve value and the original gamma curve value.

11. The method for driving a display panel according to claim 10 , wherein when the color saturation is between 0 and 120, the gamma adjustment value satisfies that a gamma value is equal to 2.2.

12. A method for driving a display panel, the method comprising steps of:

inputting a frame of image;

obtaining a signal of the frame of image progressively scanned by the display panel;

selecting each row of pixels in the frame of image by using a multiple of 2 as an interval, and calculating a color saturation level of each of the selected pixels at intervals to form a color saturation value, wherein

a formula of calculating the color saturation value is:

a formula S =max( R,G,B )−min( R,G,B ), wherein S represents the color saturation value;

collecting and accumulating the color saturation values of each row of pixels respectively to form line buffer data and storing the line buffer data in a line buffer;

accumulating the line buffer data of all rows progressively to form frame buffer data, wherein

a data size of each color saturation value is less than or equal to 6 bits;

comparing all the color saturation values in the frame buffer data to obtain by calculation a maximum color saturation value to represent the color saturation level of the frame of image;

determining the chromatic aberration level of each frame of image by using the maximum saturation value of each frame of image, wherein a larger color saturation value indicates a higher chromatic aberration level;

decreasing the gamma curve value if the chromatic aberration level of the frame of image is greater than or equal to a preset threshold;

maintaining an original gamma curve value if the chromatic aberration level of the frame of image is less than the preset threshold; and

driving the display panel by using the adjusted gamma curve value.