Display device and driving method thereof

1 . A display device, comprising:

a plurality of sub-pixels, divided into a plurality of sub-pixel groups, wherein each of the sub-pixel groups comprises at least one row of the sub-pixels, and the plurality of sub-pixel groups comprises sub-pixel groups from a first sub-pixel group to an n th sub-pixel group, wherein n is a positive integer greater than 1;

a plurality of gate lines, divided into gate line groups from a first gate line group to an n th gate line group corresponding to the sub-pixel groups from the first sub-pixel group to the n th sub-pixel group, wherein each of the gate lines in an i th gate line group is electrically connected to corresponding ones of the sub-pixels in the i th sub-pixel group, wherein i is a positive integer greater than or equal to 1 and less than or equal to n;

a frame buffer, configured to sequentially buffer data signals of each of the sub-pixels from the first sub-pixel group to the n th sub-pixel group within one frame, wherein one frame comprises sub-frames from a first sub-frame to an m th sub-frame, m is a positive integer greater than 1, and the data signals comprises m sub-data signals of the corresponding sub-pixels respectively presented in sub-frames from the first sub-frame to the m th sub-frame; and

a source driver, electrically connected between the frame buffer and the plurality of sub-pixels, configured to:

control each of the sub-pixels in the first sub-pixel group to display an image of the first sub-frame within a current frame, and control each of the sub-pixels in a second sub-pixel group to display an image of a previous frame, when n is equal to 2 and the frame buffer has completed buffering the data signals of each of the sub-pixels in the first sub-pixel group within the current frame; or

control each of the sub-pixels in the first sub-pixel group to display the image of the first sub-frame within the current frame, and control each of the sub-pixels in the second sub-pixel group and a third sub-pixel group to display the image of the previous frame, when n is equal to 3 and the frame buffer has completed buffering the data signals of each of the sub-pixels in the first sub-pixel group within the current frame; and, control each of the sub-pixels in the first sub-pixel group and the second sub-pixel group to display an image of a second sub-frame within the current frame, and control each of the sub-pixels in the third sub-pixel group to display the image of the previous frame, when n is equal to 3 and the frame buffer has completed buffering the data signals of each of the sub-pixels in the second sub-pixel group within the current frame; or

control each of the sub-pixels in the first sub-pixel group to display the image of the first sub-frame within the current frame, and control each of the sub-pixels in the sub-pixel groups from the second sub-pixel group to the n th sub-pixel group to display the image of the previous frame, when n is greater than 3 and the frame buffer has completed buffering the data signals of each of the sub-pixels in the first sub-pixel group within the current frame; and, control each of the sub-pixels in the sub-pixel groups from the first sub-pixel group to a j th sub-pixel group to display an image of a j th sub-frame within the current frame, and control each of the sub-pixels in the sub-pixel groups from a (j+1) th sub-pixel group to the n th sub-pixel group to display the image of the previous frame, when n is greater than 3 and the frame buffer has completed buffering the data signals of each of the sub-pixels in the j th sub-pixel group within the current frame, wherein j is greater than 1 and less than n; and, control each of the sub-pixels in the sub-pixel groups from the first sub-pixel group to the n th sub-pixel group to display an image of an n th sub-frame within the current frame, when n is greater than 3 and the frame buffer has completed buffering the data signals of each of the sub-pixels in the n th sub-pixel group within the current frame, wherein j is a positive integer greater than 1 and less than n.

2 . The display device according to claim 1 , wherein n is less than or equal to m.

3 . The display device according to claim 1 , wherein each of the sub-data signals has a corresponding weight coefficient, wherein a value of each of the sub-data signals is used for controlling the corresponding sub-pixel to emit light or extinguish, the weight coefficient corresponding to each of the sub-data signals is used for controlling a duration of light-emitting or of extinguishing of the corresponding sub-pixel, and weight coefficients of at least some of the sub-data signals among the m sub-data signals are different;

the m sub-data signals arranged in sequence in the data signals of each of the sub-pixels in the first sub-pixel group correspond respectively to the sub-frames from the first sub-frame to the m th sub-frame; and

when m is greater than 2, the m sub-data signals arranged in sequence within the frame buffer in the data signals of each of the sub-pixels in the second sub-pixel group correspond to the sub-frames from the second sub-frame to the m th sub-frame, and the first sub-frame in sequence.

4 . The display device according to claim 3 , wherein when n is greater than or equal to 3, m is greater than h, and h is a positive integer greater than 2 and less than n, the m sub-data signals arranged in sequence within the frame buffer in the data signals of each of the sub-pixels in an h th sub-pixel group correspond to the sub-frames from an h th sub-frame to the m th sub-frame, and the sub-frames from the first sub-frame to a (h−1) th sub-frame in sequence.

5 . The display device according to claim 4 , wherein the source driver is configured to:

control each of the sub-pixels in the sub-pixel groups from the first sub-pixel group to the j th sub-pixel group to display the image of the j th sub-frame within the current frame according to the sub-data signal of the j th sub-frame of the current frame, and control each of the sub-pixels in a kth sub-pixel group in the sub-pixel groups from the (j+1) th sub-pixel group to the n th sub-pixel group to display an image of a (m+j−k+1) th sub-frame within the previous frame according to a (m+j−k+1) th sub-data signal of the previous frame, when the frame buffer has completed buffering the data signals of each of the sub-pixels in the j th sub-pixel group within the current frame, wherein k is a positive integer greater than or equal to j+1, and less than or equal to n.

6 . The display device according to claim 3 , wherein some of the sub-data signals with sequentially increasing weight coefficients corresponding to each of the sub-pixels in the first sub-pixel group are continuously arranged in the corresponding m sub-data signals arranged in sequence.

7 . The display device according to claim 4 , wherein some of the sub-data signals with sequentially increasing weight coefficients corresponding to each of the sub-pixels in the first sub-pixel group are continuously arranged in the corresponding m sub-data signals arranged in sequence.

8 . The display device according to claim 5 , wherein some of the sub-data signals with sequentially increasing weight coefficients corresponding to each of the sub-pixels in the first sub-pixel group are continuously arranged in the corresponding m sub-data signals arranged in sequence.

9 . The display device according to claim 3 , wherein some of the sub-data signals with sequentially increasing weight coefficients corresponding to each of the sub-pixels in the first sub-pixel group are dispersedly arranged in the corresponding m sub-data signals arranged in sequence.

10 . The display device according to claim 4 , wherein some of the sub-data signals with sequentially increasing weight coefficients corresponding to each of the sub-pixels in the first sub-pixel group are dispersedly arranged in the corresponding m sub-data signals arranged in sequence.

11 . The display device according to claim 5 , wherein some of the sub-data signals with sequentially increasing weight coefficients corresponding to each of the sub-pixels in the first sub-pixel group are dispersedly arranged in the corresponding m sub-data signals arranged in sequence.

12 . The display device according to claim 3 , wherein the display device comprises a first refresh rate mode and a second refresh rate mode, and a refresh rate of the display device in the first refresh rate mode is greater than a refresh rate of the display device in the second refresh rate mode; wherein

when the display device is in the first refresh rate mode, some of the sub-data signals with sequentially increasing weight coefficients corresponding to each of the sub-pixels in the first sub-pixel group are continuously arranged in the corresponding m sub-data signals arranged in sequence; and

when the display device is in the second refresh rate mode, some of the sub-data signals with sequentially increasing weight coefficients corresponding to each of the sub-pixels in the first sub-pixel group are dispersedly arranged in the corresponding m sub-data signals arranged in sequence.

13 . The display device according to claim 4 , wherein the display device comprises a first refresh rate mode and a second refresh rate mode, and a refresh rate of the display device in the first refresh rate mode is greater than a refresh rate of the display device in the second refresh rate mode; wherein

when the display device is in the first refresh rate mode, some of the sub-data signals with sequentially increasing weight coefficients corresponding to each of the sub-pixels in the first sub-pixel group are continuously arranged in the corresponding m sub-data signals arranged in sequence; and

when the display device is in the second refresh rate mode, some of the sub-data signals with sequentially increasing weight coefficients corresponding to each of the sub-pixels in the first sub-pixel group are dispersedly arranged in the corresponding m sub-data signals arranged in sequence.

14 . The display device according to claim 5 , wherein the display device comprises a first refresh rate mode and a second refresh rate mode, and a refresh rate of the display device in the first refresh rate mode is greater than a refresh rate of the display device in the second refresh rate mode; wherein

when the display device is in the first refresh rate mode, some of the sub-data signals with sequentially increasing weight coefficients corresponding to each of the sub-pixels in the first sub-pixel group are continuously arranged in the corresponding m sub-data signals arranged in sequence; and

when the display device is in the second refresh rate mode, some of the sub-data signals with sequentially increasing weight coefficients corresponding to each of the sub-pixels in the first sub-pixel group are dispersedly arranged in the corresponding m sub-data signals arranged in sequence.

15 . The display device according to claim 1 , wherein each of gate line groups from the first gate line group to a (n−1) th gate line group includes a same number of gate lines, and a number of gate lines in the n th gate line group is less than or equal to a number of gate lines in each of gate line groups from the first gate line group to the (n−1) th gate line group.

16 . The display device according to claim 1 , further comprising a gate driver and a plurality of data lines; wherein each of the gate lines is electrically connected between a corresponding output terminal of the gate driver and a corresponding row of sub-pixels, so as to transmit a corresponding gate signal to the corresponding row of sub-pixels, and each of the data lines is electrically connected between the source driver and a corresponding column of sub-pixels to transmit a corresponding data signal to the corresponding column of sub-pixels.

17 . The display device according to claim 16 , further comprising a timing controller; wherein

the timing controller is configured to obtain control signals and a plurality of image signals corresponding to a plurality of frames, and generate clock signals acting on the gate driver according to the control signals;

the gate driver is further configured to generate a plurality of gate signals according to the clock signals;

the frame buffer is further configured to obtain image signals of each of the frames, wherein each of the image signals comprises a plurality of gray scale signals corresponding to a plurality of sub-pixels, and the gray scale signals represent gray scale values of the plurality of sub-pixels; and, the frame buffer is further configured to generate corresponding data signals according to the gray scale signals; and

the source driver is further configured to output data signals corresponding to a row of sub-pixels when the row of sub-pixels is turned on, so that each of a plurality of sub-pixels in the row emits light according to corresponding data signals.

18 . A driving method of a display device, used for driving the display device according to claim 1 , comprising:

controlling the frame buffer to sequentially buffer data signals of each of the sub-pixels from the first sub-pixel group to the n th sub-pixel group within one frame;

judging whether n is equal to 2;

controlling, through the source driver, each of the sub-pixels in the first sub-pixel group to display an image of the first sub-frame within a current frame, and controlling each of the sub-pixels in the second sub-pixel group to display an image of a previous frame, when n is equal to 2 and the frame buffer has completed buffering the data signals of each of the sub-pixels in the first sub-pixel group within the current frame;

judging whether n is equal to 3 when n is not equal to 2;

controlling, through the source driver, each of the sub-pixels in the first sub-pixel group to display the image of the first sub-frame within the current frame, and controlling each of the sub-pixels in the second sub-pixel group and the third sub-pixel group to display the image of the previous frame, when n is equal to 3 and the frame buffer has completed buffering the data signals of each of the sub-pixels in the first sub-pixel group within the current frame; and, controlling, through the source driver, each of the sub-pixels in the first sub-pixel group and the second sub-pixel group to display an image of the second sub-frame within the current frame, and controlling each of the sub-pixels in the third sub-pixel group to display the image of the previous frame, when n is equal to 3 and the frame buffer has completed buffering the data signals of each of the sub-pixels in the second sub-pixel group within the current frame;

judging whether n is greater than 3 when n is not equal to 3; and

controlling, through the source driver, each of the sub-pixels in the first sub-pixel group to display the image of the first sub-frame within the current frame, and controlling each of the sub-pixels in the sub-pixel groups from the second sub-pixel group to the n th sub-pixel group to display the image of the previous frame, when n is greater than 3 and the frame buffer has completed buffering the data signals of each of the sub-pixels in the first sub-pixel group within the current frame; and, controlling, through the source driver, each of the sub-pixels in the sub-pixel groups from the first sub-pixel group to the j th sub-pixel group to display an image of the j th sub-frame within the current frame, and controlling each of the sub-pixels in the sub-pixel groups from the (j+1) th sub-pixel group to the n th sub-pixel group to display the image of the previous frame, when n is greater than 3 and the frame buffer has completed buffering the data signals of each of the sub-pixels in the j th sub-pixel group within the current frame, wherein j is greater than 1 and less than n; and, controlling, through the source driver, each of the sub-pixels in the sub-pixel groups from the first sub-pixel group to the n th sub-pixel group to display an image of the n th sub-frame within the current frame, when n is greater than 3 and the frame buffer has completed buffering the data signals of each of the sub-pixels in the n th sub-pixel group within the current frame, wherein j is a positive integer greater than 1 and less than n.

19 . The driving method of the display device according to claim 18 , wherein weight coefficients of at least some of the sub-data signals among m sub-data signals are different, and the weight coefficient corresponding to each of the sub-data signals is used for controlling a duration of light-emitting or extinguishing of the corresponding sub-pixel; wherein

the step of controlling the frame buffer to sequentially buffer data signals of each of the sub-pixels from the first sub-pixel group to the n th sub-pixel group within one frame, comprises:

controlling the frame buffer to sequentially buffer the m sub-data signals corresponding respectively to the sub-frames from the first sub-frame to the m th sub-frame in the data signals of each of the sub-pixels in the first sub-pixel group; and

controlling the frame buffer to sequentially buffer the m sub-data signals corresponding respectively to the sub-frames from the second sub-frame to the m th sub-frame, and the first sub-frame in the data signals of each of the sub-pixels in the second sub-pixel group when m is greater than 2.

20 . The driving method of the display device according to claim 19 , wherein the step of controlling the frame buffer to sequentially buffer data signals of each of the sub-pixels from the first sub-pixel group to the n th sub-pixel group within one frame, further comprises:

controlling the frame buffer to sequentially buffer the m sub-data signals corresponding respectively to the sub-frames from the h th sub-frame to the m th sub-frame and the sub-frames from the first sub-frame to the (h−1) th sub-frame in the data signals of each of the sub-pixels in the h th sub-pixel group, when n is greater than or equal to 3 and m is greater than h, wherein h is a positive integer greater than 2 and less than n.