CN-119007670-B - Driving method and driving device of display panel and display device

CN119007670BCN 119007670 BCN119007670 BCN 119007670BCN-119007670-B

Abstract

The disclosure relates to the technical field of display, and discloses a driving method, a driving device and a display device of a display panel, wherein the driving method of the display panel comprises the following steps: in the n+1 frame, the display panel is driven to display the picture according to the first overdrive relation table and the target gray scale value of the sub-pixel in the n frame and the n+1 frame, in the n+1 frame to the n+1+k frame, if the actual gray scale value corresponding to the actual display brightness of the sub-pixel in the current frame is different from the target gray scale value in the current frame, in the later frame of the current frame, the display panel is driven to display the picture according to the second overdrive relation table and the actual gray scale value of the sub-pixel in the current frame and the target gray scale value of the later frame, and the overdrive scheme of the display panel is carried out in a mode of combining the first overdrive relation table and the second overdrive relation table, so that the overdrive requirement of the display panel under high refresh frequency can be met, and the display effect of the picture is effectively improved.

Inventors

HU PENGFEI
MA WENPENG
ZHANG ZHENG
ZHOU HONGTU
HAN HAO
YANG YUE
CHEN DONGCHUAN

Assignees

北京京东方显示技术有限公司
京东方科技集团股份有限公司

Dates

Publication Date: 20260512
Application Date: 20230517

Claims (8)

1. A driving method of a display panel, comprising: In the n+1th frame, driving the display panel to display a picture according to a first overdrive relation table and target gray scale values of the sub-pixels in the n frame and the n+1th frame, wherein n is a natural number; Judging whether a difference value between an actual gray level value corresponding to the actual display brightness of the sub-pixel in a current frame and a target gray level value in the current frame is larger than a threshold value or not in an n+1 frame to an n+1+k frame, if the difference value is larger than the threshold value, driving the display panel to display a picture according to a second overdrive relation table and the actual gray level value of the sub-pixel in the current frame and the target gray level value of the next frame in a next frame of the current frame, and if the difference value is not larger than the threshold value, driving the display panel to display the picture according to a first overdrive relation table and the target gray level value of the sub-pixel in the current frame and the target gray level value of the next frame in the next frame, wherein k is a positive integer; The first overdrive relation table comprises a plurality of different first gray scale values, a plurality of different second gray scale values and first gray scale adjustment values corresponding to any one of the first gray scale values and any one of the second gray scale values; the second overdrive relation table comprises a plurality of different first gray scale values, a plurality of different second gray scale values and second gray scale adjustment values corresponding to any one of the first gray scale values and any one of the second gray scale values; the first gray scale adjustment value and the second gray scale adjustment value, which at least partially correspond to the first gray scale value and the second gray scale value, are different.
2. The method of claim 1, wherein the method further comprises: Judging whether the difference value between the actual gray-scale value corresponding to the actual display brightness of the sub-pixel in the n+1th frame and the target gray-scale value in the n+1th frame is larger than a threshold value or not; if yes, in the n+2 frame, driving the display panel to display a picture according to a second overdrive relation table, the actual gray scale value of the sub-pixel in the n+1 frame and the target gray scale value of the n+2 frame; Otherwise, in the n+2 frame, driving the display panel to display a picture according to the first overdrive relation table and target gray scale values of the sub-pixels in the n+1 frame and the n+2 frame.
3. The method of claim 2, wherein driving the display panel display according to the second overdrive relationship table and the actual gray-scale value of the sub-pixel in the n+1th frame and the target gray-scale value of the n+2th frame includes: Obtaining a target second gray scale adjustment value from the second overdrive relation table according to the actual gray scale value of the sub-pixel in the n+1th frame and the target gray scale value of the n+2th frame; And driving the display panel to display a picture according to the target second gray scale adjustment value.
4. The method of claim 3, wherein said deriving a target second gray scale adjustment value from said second overdrive relationship table based on said actual gray scale value of said sub-pixel at said n+1th frame and said target gray scale value of said n+2th frame, comprises: taking the actual gray scale value of the sub-pixel in the n+1th frame as a first gray scale value, and taking the target gray scale value of the n+2th frame as a second gray scale value; and searching an intersection point in the second overdrive relation table according to the first gray scale value and the second gray scale value, and determining a second gray scale adjustment value corresponding to the intersection point as the target second gray scale adjustment value.
5. The method of claim 3, wherein driving the display panel display according to the target second gray scale adjustment value comprises: And inputting a second data voltage to a data line in the display panel according to the target second gray scale adjustment value so that each sub-pixel in the n+2 frame is charged with the second data voltage.
6. The method of claim 2, wherein driving the display panel display according to the first overdrive relationship table and the target gray scale values of the sub-pixels in the n+1th frame and the n+2th frame comprises: obtaining a target first gray scale adjustment value from the first overdrive relation table according to the target gray scale value of the sub-pixel in the n+1th frame and the target gray scale value of the n+2th frame; and driving the display panel to display a picture according to the target first gray scale adjustment value.
7. The method of claim 6, wherein the obtaining a target first gray scale adjustment value from the first overdrive relationship table based on the target gray scale value of the sub-pixel in the n+1th frame and the target gray scale value of the n+2th frame, comprises: taking the target gray scale value of the n+1th frame as a first gray scale value, and taking the target gray scale value of the n+2th frame as a second gray scale value; And searching an intersection point in the first overdrive relation table according to the target gray-scale value of the n+1th frame and the target gray-scale value of the n+2th frame, and determining a first gray-scale adjustment value corresponding to the intersection point as the target first gray-scale adjustment value.
8. The method of claim 6, wherein driving the display panel display according to the target first gray scale adjustment value comprises: And inputting a first data voltage to a data line in the display panel according to the target first gray scale adjustment value so that each sub-pixel in the n+2 frame is charged with the first data voltage.

Description

Driving method and driving device of display panel and display device Technical Field The disclosure relates to the technical field of display, and provides a driving method and device for a display panel and a display device. Background Currently, the overdrive technology is usually completed within the time of gray level switching of a frame of pixels, that is, the adjustment gray level corresponding to the switching process is queried according to the gray level values of the previous frame and the current frame in a predetermined overdrive relation table, so that each sub-pixel in the display panel is driven to charge the overdrive data voltage corresponding to the adjustment gray level. However, due to the gradual increase of the refresh frequency, the gray level value cannot be adjusted to the target gray level value within one frame by adopting the existing overdrive technology, that is, the gray level value of the previous frame cannot be adjusted to the target gray level value within one frame, so that the current frame is driven by adopting the existing overdrive technology on the basis that whether the previous frame reaches the target gray level value cannot be known, so that the difference between the actual gray level value of the current frame and the corresponding target gray level value is larger, and similar conditions can occur in the next frame and the next frame, thereby causing bad performances such as smear and color reversal of the picture. Disclosure of Invention The embodiment of the disclosure provides a driving method, a driving device and a display device of a display panel, which are used for improving an overdrive technology under high refresh frequency and improving the display effect of a picture. The specific technical scheme provided by the disclosure is as follows: in a first aspect, an embodiment of the present disclosure provides a driving method of a display panel, including: In the n+1th frame, driving the display panel to display a picture according to the first overdrive relation table and target gray scale values of the sub-pixels in the n frame and the n+1th frame, wherein n is a natural number; In the n+1th to n+1th frames, if the actual gray scale value corresponding to the actual display brightness of the sub-pixel in the current frame is different from the target gray scale value in the current frame, driving the display panel to display a picture according to the second overdrive relation table and the actual gray scale value of the sub-pixel in the current frame and the target gray scale value of the next frame in the next frame, wherein k is a positive integer; the first overdrive relation table comprises a plurality of different first gray scale values, a plurality of different second gray scale values and first gray scale adjustment values corresponding to any one of the first gray scale values and any one of the second gray scale values; The second overdrive relation table comprises a plurality of different first gray scale values, a plurality of different second gray scale values and second gray scale adjustment values corresponding to any one of the first gray scale values and any one of the second gray scale values; the first gray scale adjustment value and the second gray scale adjustment value, which at least partially correspond to the first gray scale value and the second gray scale value, are different. Optionally, the method further comprises: judging whether the difference value between the actual gray scale value corresponding to the actual display brightness of the sub-pixels in the n+1th frame and the target gray scale value in the n+1th frame is larger than a threshold value or not; If yes, in the n+2 frame, driving the display panel to display a picture according to the second overdrive relation table, the actual gray scale value of the sub-pixel in the n+1 frame and the target gray scale value of the n+2 frame; Otherwise, in the n+2 frame, driving the display panel to display the picture according to the first overdrive relation table and the target gray scale values of the sub-pixels in the n+1 frame and the n+2 frame. Optionally, driving the display panel to display a picture according to the second overdrive relation table and the actual gray-scale value of the sub-pixel in the n+1th frame and the target gray-scale value of the n+2th frame, including: Obtaining a target second gray scale adjustment value from a second overdrive relation table according to the actual gray scale value of the sub-pixel in the n+1th frame and the target gray scale value of the n+2th frame; And driving the display panel to display a picture according to the target second gray scale adjustment value. Optionally, obtaining a target second gray-scale adjustment value from the second overdrive relation table according to the actual gray-scale value of the sub-pixel in the n+1th frame and the target gray-scale value of the n+2th frame, including: Taking the actu