Driving method and driving apparatus for display panel, and display device

1. A driving method for a display panel, the display panel having a first resolution, the driving method comprising:

converting RGB signals of an input image having a second resolution into YUV signals corresponding to an output image, a resolution of the output image being not smaller than the second resolution;

converting the YUV signals into RGB signals corresponding to the output image;

converting the RGB signals corresponding to the output image into driving signals for driving the display panel; and

outputting the driving signals to the display panel,

wherein the converting the RGB signals of the input image having the second resolution into the YUV signals corresponding to the output image comprises:

segmenting the input image into N sub-image, N being a positive integer; and

converting RGB signals of each of the sub-images into a group of YUV signals, to obtain N groups of YUV signals,

wherein, in a case where the input image cannot be segmented into N sub-images having a same resolution, the segmenting the input image into N sub-images comprises:

segmenting the input image into N initial sub-images, the N initial sub-images including K first initial sub-images having a third resolution and (N-K) second initial sub-images having a fourth resolution, the third resolution being smaller than the fourth resolution, K being a positive integer and smaller than N; and

inserting a predetermined number of blank pixels at a predetermined position of the first initial sub-images, an amount of the blank pixels being equal to a difference between the fourth resolution and the third resolution.

2. The driving method according to claim 1 , wherein the first resolution is equal to the second resolution.

3. The driving method according to claim 2 , wherein said segmenting the input image into N sub-images comprises:

segmenting the input image into N initial sub-images, the N initial sub-images including K first initial sub-images having a third resolution and (N-K) second initial sub-images having a fourth resolution, the third resolution being smaller than the fourth resolution, K being a positive integer and smaller than N; and

regarding the second initial sub-images as sub-images corresponding to the second initial sub-images, and adding blank pixels to the first initial sub-images to obtain sub-images corresponding to the first initial sub-images, an amount of the blank pixels being equal to a difference between the fourth resolution and the third resolution.

4. The driving method according to claim 3 , wherein said converting the YUV signals into RGB signals corresponding to the output image comprises: converting the N groups of YUV signals into N groups of RGB signals;

said converting the RGB signals corresponding to the output image into driving signals for driving the display panel comprises:

converting the N groups of RGB signals into N groups of initial driving signals; and

removing signals corresponding to the blank pixels from the initial driving signals to obtain N groups of driving signals.

5. The driving method according to claim 1 , wherein the second resolution is smaller than the first resolution, said converting RGB signals of an input image having a second resolution into YUV signals corresponding to an output image comprises:

converting the RGB signals of the input image into YUV signals corresponding to the input image; and

performing an enlarging process on the YUV signals corresponding to the input image to obtain the YUV signals corresponding to the output image.

6. The driving method according to claim 5 , wherein said converting the RGB signals of the input image into YUV signals corresponding to the input image comprises:

segmenting the input image into N initial sub-images, the N initial sub-images including K first initial sub-images having a third resolution and (N-K) second initial sub-images having a fourth resolution, the third resolution being smaller than the fourth resolution, K being a positive integer and smaller than N;

regarding the second initial sub-images as sub-images corresponding to the second initial sub-images, and adding blank pixels to the first initial sub-images to obtain sub-images corresponding to the first initial sub-images, an amount of the blank pixels being equal to a difference between the fourth resolution and the third resolution; and

converting RGB signals of each of the sub-images into a group of YUV signals, to obtain N groups of YUV signals.

7. The driving method according to claim 6 , wherein said converting the YUV signals into RGB signals corresponding to the output image comprises:

converting the YUV signals of the sub-images corresponding to the second initial sub-images into corresponding RGB signals; and

converting the YUV signals of the sub-images corresponding to the first initial sub-images into RGB signals and removing RGB signals corresponding to the blank pixels.

8. The driving method according to claim 6 , wherein said converting the RGB signals corresponding to the output image into driving signals for driving the display panel comprises:

segmenting the RGB signals corresponding to the output image into M groups, M being a positive integer and equal to or not equal to N; and

converting the M groups of RGB signals into M groups of driving signals.

9. The driving method according to claim 8 , wherein among the M groups of RGB signals, J groups of RGB signals correspond to sub-images having a fifth resolution, and (M-J) groups of RGB signals correspond to sub-images having a sixth resolution, the fifth resolution and the sixth resolution are different, J is a positive integer and smaller than M.

10. A driving apparatus for a display panel, the display panel having a first resolution, the driving apparatus comprising a processor and a transmission port, wherein the processor is configured to:

convert RGB signals of an input image having a second resolution into YUV signals corresponding to an output image, a resolution of the output image being not smaller than the second resolution;

convert the YUV signals obtained in the processor into RGB signals corresponding to the output image; and

convert the RGB signals obtained in the processor into driving signals for driving the display panel,

wherein the transmission port is configured to:

output the driving signals obtained in the processor to the display panel,

wherein the processor is configured to convert the RGB signals of the input image into YUV signals corresponding to the output image by:

segmenting the input image into N sub-images, N being a positive integer; and

converting RGB signals of each of the sub-images into a group of YUV signals, to obtain N groups of YUV signals,

wherein, in a case where the input image cannot be segmented into N sub-images having a same resolution, the segmenting the input image into N sub-images comprises:

segmenting the input image into N initial sub-images, the N initial sub-images including K first initial sub-images having a third resolution and (N-K) second initial sub-images having a fourth resolution, the third resolution being smaller than the fourth resolution, K being a positive integer and smaller than N; and

inserting a predetermined number of blank pixels at a predetermined position of the first initial sub-images, an amount of the blank pixels being equal to a difference between the fourth resolution and the third resolution.

11. The driving apparatus according to claim 10 , wherein the processor is further configured to convert RGB signals of the input image into YUV signals corresponding to the input image.

12. The driving apparatus according to claim 10 , wherein the processor is further configured to enlarge the YUV signals corresponding to the input image to obtain the YUV signals corresponding to the output image.

13. The driving apparatus according to claim 12 , wherein the processor is further configured to convert the YUV signals corresponding to the output image into RGB signals corresponding to the output image, and remove RGB signals corresponding to the blank pixels.

14. The driving apparatus according to claim 10 , wherein the processor is configured to:

convert the N groups of YUV signals into N groups of RGB signals;

convert the N groups of RGB signals obtained in the processor into N groups of initial driving signals; and

remove driving signals corresponding to the blank pixels from among the initial driving signals to obtain N groups of driving signals.

15. The driving apparatus according to claim 14 , wherein

the processor is further configured to segment the RGB signals outputted by the processor into M groups, and convert the M groups of RGB signals into M groups of driving signals, M being a positive integer and equal to or not equal to N.

16. A display device, comprising a driving apparatus and a display panel, the display panel having a first resolution, an output terminal of the driving apparatus is connected to an input terminal of the display panel, wherein the driving apparatus is the driving apparatus according to claim 10 .

17. The display device according to claim 16 , wherein the processor is further configured to:

convert the YUV signals corresponding to the output image into RGB signals corresponding to the output image;

remove RGB signals corresponding to the blank pixels;

convert the RGB signals obtained in the processor into initial driving signals; and

remove driving signals corresponding to the blank pixels from among the initial driving signals.