Brightness compensation method of display panel and display panel

Abstract

The application provides a brightness compensation method of a display panel and the display panel, which can adjust a picture compensation mode of a variable refresh rate anti-flicker module according to the opening and closing states of a polarity inversion compensation function, so that the flicker in the variable refresh rate mode can be improved, and the horizontal crosstalk problem can be improved.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a brightness compensation method for a display panel and a display panel. Background Technology

[0002] Liquid crystal displays (LCDs) can switch refresh rates in variable refresh rate (VRR) mode. At high refresh rates, the blank periods between each frame are shorter, and the leakage time is also shorter, allowing the LCD to maintain its original screen brightness. At low refresh rates, the blank periods between each frame are longer, and the leakage time is also longer, resulting in a decrease in screen brightness. When the LCD switches between different refresh rates, the difference in brightness between the displayed images at different refresh rates causes noticeable flickering to be observed by the human eye.

[0003] To solve the above technical problems, traditional LCD panels use variable refresh rate de-flicker (VDF) technology: to set compensation values ​​for positive and negative pixels separately, taking into account the different leakage current conditions of positive and negative pixels.

[0004] To address horizontal crosstalk, traditional LCD panels employ polarity reversal compensation (POLC) technology. POLC works by reversing the polarity of the signals output from the source drivers on adjacent chip-on-film (COF) layers of the LCD panel. For example, it changes the polarity of the output signal from +-+- to -+-+, thus avoiding the influence of the voltage of the upper and lower rows of pixels on the common electrode voltage and preventing crosstalk from occurring in principle.

[0005] However, when polarity flip compensation technology is used in traditional LCD panels, the polarity of a pixel corresponding to a certain source drive circuit flips. If variable refresh rate anti-flicker technology is used at this time, the original polarity compensation value will be compensated to the original grayscale value with the opposite polarity. This will cause the positive and negative polarity compensation values ​​of the corresponding areas of different source drive circuits to be opposite, resulting in different brightness in different positions of the final displayed image. Therefore, polarity flip compensation technology and variable refresh rate anti-flicker technology are not compatible in traditional LCD panels.

[0006] Therefore, it is necessary to provide a brightness compensation method for a display panel and a display panel method to improve this deficiency. Summary of the Invention

[0007] The embodiments of this application provide a brightness compensation method for a display panel and a display panel, which can adjust the screen compensation mode of the variable refresh rate anti-flicker module according to the on and off state of the polarity inversion compensation function, thereby not only improving the flickering situation in the variable refresh rate mode, but also improving the problem of horizontal crosstalk.

[0008] Embodiments of this application provide a brightness compensation method for a display panel, comprising:

[0009] Get the status of the polarity reversal compensation function;

[0010] When the polarity flip compensation function is enabled, the position type of the pixel in the display panel to which the initial grayscale signal is to be input is obtained, and the position type includes polarity flip position.

[0011] When the pixel is in the polarity flip position, adjust the grayscale compensation value of the pixel to be brightness compensated;

[0012] The brightness of the pixel is compensated based on the adjusted grayscale compensation value.

[0013] According to one embodiment of this application, the display panel includes a plurality of source driving circuits, each of the source driving circuits being used to drive a corresponding plurality of columns of pixels, and the step of obtaining the position type of the pixel in the display panel to which the initial grayscale signal is to be input includes:

[0014] Obtain the coordinates of the pixel;

[0015] Based on the coordinates of the pixel, determine the source driving circuit used to drive the pixel;

[0016] Obtain the output polarity control signal;

[0017] Based on the output polarity control signal, determine whether the polarity of the signal output by the source driving circuit corresponding to the pixel needs to be flipped;

[0018] If flipping is required, the position type of the pixel is determined to be the polarity flip position.

[0019] According to an embodiment of this application, the step of adjusting the grayscale compensation value of the pixel to be brightness compensated includes:

[0020] Based on the polarity of the pixel before polarity reversal and the initial grayscale signal, the first grayscale signal of the pixel after polarity reversal is obtained.

[0021] Based on the first grayscale signal, a first grayscale compensation value corresponding to the first grayscale signal is obtained;

[0022] Replace the grayscale compensation value of the pixel to be brightness compensated with the first grayscale compensation value.

[0023] According to an embodiment of this application, the step of performing brightness compensation on the pixel based on the adjusted grayscale compensation value includes:

[0024] The first grayscale compensation value is applied to the first grayscale signal;

[0025] The pixel is driven based on the sum of the first grayscale compensation value and the first grayscale signal.

[0026] According to one embodiment of this application, the brightness compensation method for the display panel further includes the following steps:

[0027] When the position type of the pixel is not the polarity inversion position, the gray level compensation value of the pixel to be brightness compensated is applied to the initial gray level signal.

[0028] The pixel is driven based on the sum of the grayscale compensation value and the initial grayscale signal.

[0029] According to an embodiment of this application, the step of obtaining the state of the polarity reversal compensation function includes:

[0030] Obtain the polarity reversal control signal;

[0031] When the level of the polarity reversal control signal is at a preset level, the polarity reversal compensation function is determined to be in the enabled state; when the level of the polarity reversal compensation function is not at the preset level, the polarity reversal compensation function is determined to be in the disabled state.

[0032] According to one embodiment of this application, the preset level is a high level.

[0033] According to one embodiment of this application, the brightness compensation method for the display panel further includes the following steps:

[0034] When the polarity flip compensation function is off, the grayscale compensation value of the pixel to be brightness compensated is applied to the initial grayscale signal.

[0035] The pixel is driven based on the sum of the grayscale compensation value and the initial grayscale signal.

[0036] Embodiments of this application also provide a display panel, wherein the display panel performs brightness compensation using the brightness compensation method for the display panel provided in any of the above embodiments, and the display panel includes:

[0037] The first detection module is used to obtain the status of the polarity reversal compensation module;

[0038] The second detection module is used to obtain the position type of the pixel in the display panel where the initial grayscale signal to be input is located when the polarity flip compensation module is in the enabled state. The position type includes the polarity flip position.

[0039] A polarity reversal compensation module is used to reverse the polarity of the signal output to the pixel when the pixel is in a polarity reversal position.

[0040] The adjustment module is used to adjust the grayscale compensation value of the pixel to be brightness compensated when the pixel is in the polarity flip position.

[0041] A variable refresh rate anti-flicker module is used to perform brightness compensation on the pixel based on the adjusted grayscale compensation value.

[0042] According to one embodiment of this application, the display panel includes a plurality of source driving circuits, each of the source driving circuits being used to drive a corresponding plurality of columns of pixels, and the second detection module includes:

[0043] The first sub-detection module is used to obtain the coordinates of the pixel;

[0044] The first sub-judgment module is used to determine the source driving circuit for driving the pixel based on the coordinates of the pixel.

[0045] The second sub-detection module is used to acquire the output polarity control signal;

[0046] The second sub-judgment module is used to determine, based on the output control signal, whether the polarity of the signal output by the source driving circuit corresponding to the pixel needs to be flipped; if it needs to be flipped, the position type of the pixel is determined to be the polarity flipped position.

[0047] The beneficial effects of the embodiments of this application are as follows: The embodiments of this application provide a brightness compensation method for a display panel and a display panel. The brightness compensation method of the display panel can adjust the screen compensation mode of the variable refresh rate anti-flicker module according to the on and off states of the polarity inversion compensation function. When the polarity inversion compensation function is on, when the position type of the pixel is a polarity inversion position, the gray level compensation value of the pixel to be brightness compensated is adjusted so that the gray level signal of the pixel can be compensated to the gray level compensation value corresponding to its polarity. This avoids affecting the uniformity of the brightness of the display panel after the inversion compensation function is enabled. Thus, the display panel can simultaneously enable the polarity inversion compensation function and the variable refresh rate anti-flicker function. Therefore, it can not only improve the flicker situation in the variable refresh rate mode, but also improve the problem of horizontal crosstalk. Attached Figure Description

[0048] Figure 1A schematic diagram of a brightness compensation method for a display panel provided in an embodiment of this application;

[0049] Figure 2 A schematic diagram of the structure of a display panel provided in an embodiment of this application. Detailed Implementation

[0050] The following descriptions of the embodiments are based on the accompanying illustrations and are used to illustrate specific embodiments in which this application can be implemented. Directional terms used in this application, such as [up], [down], [front], [back], [left], [right], [inner], [outer], [side], etc., are only for reference to the accompanying drawings. Therefore, the directional terms used are for illustrative and understanding purposes and not for limiting the application. In the figures, structurally similar units are represented by the same reference numerals.

[0051] The present application will be further described below with reference to the accompanying drawings and specific embodiments.

[0052] The embodiments of this application provide a brightness compensation method for a display panel, which can adjust the screen compensation mode of the variable refresh rate anti-flicker module according to the on and off state of the polarity reversal compensation function, thereby not only improving the flickering situation in the variable refresh rate mode, but also improving the problem of horizontal crosstalk.

[0053] Combination Figure 1 As shown, Figure 1 This is a schematic diagram of a brightness compensation method for a display panel provided in an embodiment of this application. The brightness compensation method for the display panel includes: obtaining the state of a polarity inversion compensation function; when the polarity inversion compensation function is enabled, obtaining the position type of the pixel in the display panel to which an initial grayscale signal is to be input, the position type including a polarity inversion position; when the pixel is in the polarity inversion position, adjusting the grayscale compensation value to which the pixel is to be brightness compensated; and performing brightness compensation on the pixel according to the adjusted grayscale compensation value.

[0054] It should be noted that the variable refresh rate de-flicker function is always enabled by default when the display panel is working. Therefore, it is not necessary to detect whether the variable refresh rate de-flicker (VDF) function is enabled at the beginning of the brightness compensation method provided in this embodiment.

[0055] During the blanking phase after a frame is displayed, the status of the polarity reversal compensation (POLC) function is obtained to determine whether the polarity reversal compensation function needs to be enabled for the next frame.

[0056] In one embodiment, the step of obtaining the state of the polarity reversal compensation function includes: obtaining a polarity reversal control signal; determining that the polarity reversal compensation function is in the enabled state when the level of the polarity reversal control signal is a preset level; and determining that the polarity reversal compensation function is in the disabled state when the level of the polarity reversal compensation function is not a preset level.

[0057] The polarity reversal control signal can be provided by the timing control circuit. The polarity reversal compensation function should be enabled in the next frame based on the level of the polarity reversal control signal.

[0058] In one embodiment, the preset level is high. When the level of the polarity inversion control signal is low, it indicates that the polarity inversion compensation function is not enabled in the next frame. When the level of the polarity inversion control signal is high, it indicates that the polarity inversion compensation function is enabled in the next frame.

[0059] In some other embodiments, the preset level can also be high, that is, the polarity inversion control signal can be low to indicate that the polarity inversion compensation function is enabled in the next frame, and the polarity inversion control signal can be high to indicate that the polarity inversion compensation function is not enabled in the next frame.

[0060] In one embodiment, when the polarity flip compensation function is off, the grayscale compensation value of the pixel to be brightness compensated is applied to the initial grayscale signal; the pixel is driven based on the sum of the grayscale compensation value and the initial grayscale signal.

[0061] It should be noted that the grayscale compensation value for brightness compensation of the pixel is the initial grayscale compensation value corresponding to the initial grayscale signal. Assuming that the polarity flip compensation function is not enabled in the next frame, the pixel will be compensated with the initial grayscale signal by the initial grayscale compensation value, and the pixel will be driven according to the sum of the initial grayscale compensation value and the initial grayscale signal.

[0062] The polarity inversion function only inverts the polarity of some source-driven pixels in the next frame, not all pixels. Therefore, after determining that polarity inversion compensation is enabled in the next frame, it is necessary to check whether a pixel is in a polarity inversion position. Only pixels in polarity inversion positions will undergo polarity inversion; pixels not in polarity inversion positions will retain their original polarity for the next frame. For example, if a pixel's polarity in the next frame is positive, when it is in a polarity inversion position, its polarity will be adjusted to negative; when it is not in a polarity inversion position, its polarity will be positive and no polarity inversion will occur.

[0063] In some embodiments, if the polarity flip compensation function is enabled in the next frame, the step of obtaining the position type of the pixel to be input grayscale signal in the display panel includes: obtaining the coordinates of the pixel; determining the source driving circuit for driving the pixel based on the coordinates of the pixel; obtaining the output polarity control signal; determining whether the polarity of the signal output by the source driving circuit corresponding to the pixel needs to be flipped based on the output polarity control signal; if it needs to be flipped, determining that the position type of the pixel is the polarity flip position.

[0064] In one embodiment, such as Figure 2 As shown, Figure 2 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application. The display panel includes multiple rows and columns of pixels (not shown in the figure). Each source driving circuit drives multiple columns of the pixels. The coordinates (x, y) of the pixel represent the number of rows and columns of pixels in the multiple rows and columns of pixels, respectively. It should be noted that... Figure 2 This illustration only shows the relationship between the modules in the display panel and does not represent the number of flip-chip films and source drive circuits in the actual application of the display panel.

[0065] For example Figure 2 As shown, the display panel is configured with five flip-chip films, each with a fixed source driver circuit. Each source driver circuit corresponds to 10 rows of pixels, counted from left to right. Assuming a pixel is located in column 25, based on the column number, it can be determined that the pixel is driven by the third source driver circuit. The polarity flip compensation function typically performs polarity flipping every other source driver circuit. For example, the polarity flip compensation function performs polarity flipping on the pixels corresponding to the first and third source driver circuits, but not on the pixels corresponding to the second source driver circuit. If the pixel is driven by the third source driver circuit, it can be determined that the pixel's position type is a polarity flipped position. If the pixel is driven by the second source driver circuit, it can be determined that the pixel's position type is not a polarity flipped position (i.e., a non-polarity flipped position).

[0066] In one embodiment, the brightness compensation method for the display panel further includes the following steps: when the position type of the pixel is not a polarity inversion position, the grayscale compensation value of the pixel to be brightness compensated is compensated to the initial grayscale signal.

[0067] It should be noted that the grayscale compensation value for brightness compensation of the pixel is the initial grayscale compensation value corresponding to the initial grayscale signal. Assuming that the polarity flip compensation function is enabled in the next frame and the position type of the pixel is not a polarity flip position, the initial grayscale compensation value is applied to the initial grayscale signal, and the pixel is driven according to the sum of the initial grayscale compensation value and the initial grayscale signal.

[0068] In some embodiments, when the position type of a pixel is a polarity inverted position, the grayscale compensation value of the pixel to be brightness compensated is adjusted.

[0069] Specifically, the steps for adjusting the grayscale compensation value of the pixel to be brightness compensated include: obtaining the first grayscale signal of the pixel after polarity reversal based on the polarity of the pixel before polarity reversal and the initial grayscale signal; obtaining the first grayscale compensation value corresponding to the first grayscale signal based on the first grayscale signal; and replacing the grayscale compensation value of the pixel to be brightness compensated with the first grayscale compensation value.

[0070] For example, suppose the polarity of a pixel in the current frame is negative, and the polarity in the next frame is positive. The grayscale compensation value of the anti-flicker compensation function in the next frame is the initial grayscale compensation value. If the polarity inversion compensation function is enabled in the next frame, then in the next frame scan cycle, the polarity of the pixel is adjusted from positive to the opposite negative polarity. The initial grayscale signal corresponding to the original positive polarity is adjusted to the first grayscale signal corresponding to the negative polarity, so that the pixel can display the grayscale signal corresponding to its polarity, avoiding the problem of horizontal crosstalk caused by the voltage jump of adjacent two rows of pixels affecting the common voltage.

[0071] It should be noted that the initial grayscale signal and the first grayscale signal correspond to the same brightness, and the polarities of the initial grayscale signal and the first grayscale signal are opposite. In this way, even if the polarity of the pixel changes in the next frame due to the polarity flip compensation function, it can be ensured that the brightness of the pixel displayed in the next frame is consistent with the target brightness to be displayed in the next frame.

[0072] In some embodiments, if the position type of a pixel in the next frame is a polarity inversion position, the initial gray level compensation value of the pixel in the next frame that originally corresponds to the initial gray level signal is replaced with the first gray level compensation value corresponding to the first gray level signal.

[0073] It should be noted that although the initial grayscale signal and the first grayscale signal correspond to the same brightness, the polarities of the initial grayscale signal and the first grayscale signal are different. Due to the different leakage conditions of the positive and negative polarities of the pixels, grayscale compensation values ​​need to be set separately for the positive and negative grayscale values. That is, the initial grayscale signal needs to be compensated with the initial grayscale compensation value, and the first grayscale signal needs to be compensated with the first grayscale compensation value. The initial grayscale compensation value and the first grayscale compensation value correspond to different polarities. Only in this way can we ensure that the brightness displayed by the pixel is consistent according to the initial grayscale signal and the first grayscale signal.

[0074] In related technologies, after the polarity reversal compensation function is activated, the polarity of a pixel corresponding to a certain source drive circuit is reversed. The variable refresh rate anti-flicker module compensates for the original polarity compensation value with the initial grayscale signal with the opposite polarity, resulting in opposite positive and negative polarity compensation values ​​for areas corresponding to different source drive circuits, leading to different brightness levels at different positions in the final displayed image. The embodiments of this application, after the pixel polarity is reversed, not only adjust the polarity and initial grayscale signal of the next frame, but also adjust the initial grayscale compensation value according to the polarity to be reversed in the next frame. This ensures that the first grayscale signal of the pixel after polarity reversal can be compensated to the first grayscale compensation value corresponding to its polarity, thereby avoiding the impact on the uniformity of the display panel brightness after enabling the reversal compensation function. This allows the display panel to simultaneously enable the polarity reversal compensation function and the variable refresh rate anti-flicker function, thus improving not only the flicker situation in variable refresh rate mode but also the horizontal crosstalk problem.

[0075] Based on the brightness compensation method for the display panel provided in the above embodiments of this application, embodiments of this application also provide a display panel, wherein the display panel performs brightness compensation using the brightness compensation method provided in any of the above embodiments, such as... Figure 2 As shown, Figure 2 The schematic diagram of the structure of the display panel provided in the embodiment of this application includes a first detection module 31, a second detection module 32, a polarity inversion compensation module 33, an adjustment module 34, and a variable refresh rate anti-flicker module 41.

[0076] The first detection module 31 is used to obtain the status of the polarity reversal compensation module 33.

[0077] The second detection module 32 is used to obtain the position type of the pixel to be input initial grayscale signal in the display panel when the polarity flip compensation module is in the enabled state. The position type includes polarity flip position.

[0078] The polarity reversal compensation module 33 is used to reverse the polarity of the signal output to the pixel when the pixel is in the polarity reversal position.

[0079] The adjustment module 34 is used to adjust the grayscale compensation value of the pixel to be brightness compensated when the pixel is in the polarity flip position.

[0080] The variable refresh rate anti-flicker module 41 is used to perform brightness compensation on pixels based on the adjusted grayscale compensation value.

[0081] In one embodiment, the display panel includes multiple source driving circuits 21, each source driving circuit 21 driving a corresponding multiple columns of pixels. The second detection module 32 includes a first sub-detection module, a first sub-judgment module, a second sub-detection module, and a second sub-judgment module (not shown in the figure). The first sub-detection module is used to acquire the coordinates of the pixel, the first sub-judgment module is used to determine the source driving circuit used to drive the pixel based on the pixel coordinates, the second sub-detection module is used to acquire the output polarity control signal, and the second sub-judgment module is used to determine whether the polarity of the signal output by the source driving circuit corresponding to the pixel needs to be flipped based on the output control signal; if it needs to be flipped, the position type of the pixel is determined to be the polarity flipped position.

[0082] In one embodiment, such as Figure 2 As shown, Figure 2 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application. The display panel includes a liquid crystal display panel body 1, multiple flip-chip films 2, and multiple source driving circuits 21. The liquid crystal display panel body 1 has multiple rows and multiple columns of pixels (not shown in the figure). Each source driving circuit 21 drives multiple columns of the pixels. The coordinates (x, y) of the pixel are the number of rows and columns of pixels it is located in. It should be noted that... Figure 2 This illustration only shows the relationship between the modules in the display panel and does not represent the number of flip-chip films and source drive circuits in the actual application of the display panel.

[0083] For example Figure 2 As shown, the display panel includes five flip-chip films, each with a fixed source driver circuit. Each source driver circuit corresponds to 10 rows of pixels, counted from left to right. Assuming a pixel is located in the 25th column, based on the pixel's y-coordinate (i.e., column number), it can be determined that the pixel is driven by the 3rd source driver circuit. The polarity inversion compensation module 33 typically performs polarity inversion every other source driver circuit. For example, the polarity inversion compensation module 33 performs polarity inversion on pixels corresponding to the 1st and 3rd source driver circuits, but does not perform polarity inversion on pixels corresponding to the 2nd source driver circuit. If a pixel is driven by the 3rd source driver circuit, it can be determined that the pixel's position type is a polarity inversion position. If a pixel is driven by the 2nd source driver circuit, it can be determined that the pixel's position type is not a polarity inversion position.

[0084] In one embodiment, the adjustment module 34 is specifically used to obtain the first gray level signal of the pixel after polarity reversal based on the polarity of the pixel before polarity reversal and the initial gray level signal; to obtain the first gray level compensation value corresponding to the first gray level signal based on the first gray level signal; and to replace the gray level compensation value for brightness compensation of the pixel to be compensated with the first gray level compensation value.

[0085] In one embodiment, such as Figure 2 As shown, the timing control circuit 3 includes a first detection module 31, a second detection module 32, an adjustment module 34, and a polarity inversion compensation module 33. The driver chip 4 includes a variable refresh rate anti-flicker module 41. The switching status signal of the polarity inversion compensation module 33 can be provided by the timing control circuit 3. The first detection module 31 determines the status of the polarity inversion compensation module in the next frame based on the acquired polarity inversion control signal. When the polarity inversion control signal is detected to be at a low level, it indicates that the polarity inversion compensation module in the next frame is in a closed state. The timing control circuit 3 can feed back the signal indicating that the polarity inversion compensation module is closed to the variable refresh rate anti-flicker module 41. The variable refresh rate anti-flicker module 41 compensates the initial grayscale signal of the pixel according to the current compensation method, that is, it compensates the initial grayscale signal according to the initial grayscale compensation value corresponding to the initial grayscale signal, and drives the pixel according to the accumulation result of the initial grayscale compensation value and the initial grayscale signal.

[0086] When the polarity inversion control signal is detected to be high, it indicates that the polarity inversion compensation module 33 is in the enabled state for the next frame. The module then uses an electrical signal to inform the second detection module 32 to obtain the position type of the pixel in the display panel where the initial grayscale signal to be input is located. If the pixel's position type is not a polarity inversion position, the timing control circuit 3 can feed back the signal that the pixel is not in a polarity inversion position to the variable refresh rate anti-flicker module 41. The variable refresh rate anti-flicker module 41 then compensates for the initial grayscale signal of the pixel according to the compensation method described above when the polarity inversion compensation module 33 is in the disabled state.

[0087] If the pixel is in a polarity-flipped position, the timing control circuit 3 can feed back the signal indicating that the pixel is in a polarity-flipped position to the polarity-flipping compensation module 33 and the variable refresh rate anti-flicker module 41, respectively. The polarity-flipping compensation module 33 adjusts the pixel's original polarity to the opposite polarity in the next frame and adjusts the pixel's original initial grayscale value in the next frame to the first grayscale value. The variable refresh rate anti-flicker module 41 replaces the grayscale compensation value of the pixel's original initial grayscale signal in the next frame with the first grayscale compensation value corresponding to the first grayscale signal; and compensates the first grayscale signal according to the first grayscale compensation value.

[0088] The beneficial effects of the embodiments of this application are as follows: The embodiments of this application provide a brightness compensation method for a display panel and a display panel. The brightness compensation method of the display panel can adjust the screen compensation mode of the variable refresh rate anti-flicker module according to the on and off state of the polarity inversion compensation function. When the polarity inversion compensation function is on, the grayscale signal of the pixel can be compensated to the grayscale compensation value corresponding to its polarity, thereby avoiding the impact on the uniformity of the brightness of the display panel after the inversion compensation function is enabled. Thus, the display panel can simultaneously enable the polarity inversion compensation function and the variable refresh rate anti-flicker function. Therefore, it can not only improve the flicker situation in the variable refresh rate mode, but also improve the problem of horizontal crosstalk.

[0089] In summary, although the present application discloses the preferred embodiments as described above, the above preferred embodiments are not intended to limit the present application. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present application. Therefore, the scope of protection of the present application is based on the scope defined by the claims.

Claims

1. A brightness compensation method for a display panel, characterized in that, include: Get the status of the polarity reversal compensation function; When the polarity flip compensation function is enabled, the position type of the pixel in the display panel to which the initial grayscale signal is to be input is obtained, and the position type includes polarity flip position. When the position type of the pixel is the polarity inversion position, adjust the grayscale compensation value of the pixel to be brightness compensated; The brightness of the pixel is compensated based on the adjusted grayscale compensation value; Wherein, the brightness compensation is variable refresh rate anti-flicker compensation, and the step of adjusting the grayscale compensation value of the pixel to be brightness compensated includes: obtaining the first grayscale signal of the pixel after polarity reversal based on the polarity of the pixel before polarity reversal and the initial grayscale signal; obtaining the first grayscale compensation value corresponding to the first grayscale signal based on the first grayscale signal; and replacing the grayscale compensation value of the pixel to be brightness compensated with the first grayscale compensation value.

2. The brightness compensation method for a display panel as described in claim 1, characterized in that, The display panel includes multiple source driving circuits, each of which is used to drive corresponding multiple columns of pixels. The step of obtaining the position type of the pixels in the display panel to be input with the initial grayscale signal includes: Obtain the coordinates of the pixel; Based on the coordinates of the pixel, determine the source driving circuit used to drive the pixel; Obtain the output polarity control signal; Based on the output polarity control signal, determine whether the polarity of the signal output by the source driving circuit corresponding to the pixel needs to be flipped; If flipping is required, the position type of the pixel is determined to be the polarity flip position.

3. The brightness compensation method for a display panel as described in claim 1, characterized in that, The step of performing brightness compensation on the pixel based on the adjusted grayscale compensation value includes: The first grayscale compensation value is applied to the first grayscale signal; The pixel is driven based on the sum of the first grayscale compensation value and the first grayscale signal.

4. The brightness compensation method for a display panel as described in any one of claims 1 to 3, characterized in that, The brightness compensation method for the display panel further includes the following steps: When the position type of the pixel is not the polarity inversion position, the gray level compensation value of the pixel to be brightness compensated is applied to the initial gray level signal. The pixel is driven based on the sum of the grayscale compensation value and the initial grayscale signal.

5. The brightness compensation method for a display panel as described in any one of claims 1 to 3, characterized in that, The steps for obtaining the state of the polarity reversal compensation function include: Obtain the polarity reversal control signal; When the level of the polarity reversal control signal is at a preset level, the polarity reversal compensation function is determined to be in the enabled state; when the level of the polarity reversal compensation function is not at the preset level, the polarity reversal compensation function is determined to be in the disabled state.

6. The brightness compensation method for a display panel as described in claim 5, characterized in that, The preset level is high.

7. The brightness compensation method for a display panel as described in claim 5, characterized in that, The brightness compensation method for the display panel further includes the following steps: When the polarity flip compensation function is off, the grayscale compensation value of the pixel to be brightness compensated is applied to the initial grayscale signal. The pixel is driven based on the sum of the grayscale compensation value and the initial grayscale signal.

8. A display panel, characterized in that, The display panel includes: The first detection module is used to obtain the status of the polarity reversal compensation module; The second detection module is used to obtain the position type of the pixel in the display panel where the initial grayscale signal to be input is located when the polarity flip compensation module is in the enabled state. The position type includes the polarity flip position. A polarity flip compensation module is used to flip the polarity of the signal output to the pixel when the pixel is in a polarity flip position; an adjustment module is used to adjust the grayscale compensation value of the pixel to be brightness compensated when the pixel is in a polarity flip position. A variable refresh rate anti-flicker module is used to compensate the brightness of the pixel based on the adjusted grayscale compensation value; The adjustment module is used to obtain a first grayscale signal of the pixel after polarity reversal based on the polarity of the pixel before polarity reversal and the initial grayscale signal; to obtain a first grayscale compensation value corresponding to the first grayscale signal based on the first grayscale signal; and to replace the grayscale compensation value for brightness compensation of the pixel with the first grayscale compensation value.

9. The display panel as described in claim 8, characterized in that, The display panel includes multiple source driving circuits, each of which drives a corresponding number of columns of pixels. The second detection module includes: The first sub-detection module is used to obtain the coordinates of the pixel; The first sub-judgment module is used to determine the source driving circuit for driving the pixel based on the coordinates of the pixel. The second sub-detection module is used to acquire the output polarity control signal; The second sub-judgment module is used to determine, based on the output control signal, whether the polarity of the signal output by the source driving circuit corresponding to the pixel needs to be flipped; if it needs to be flipped, the position type of the pixel is determined to be the polarity flipped position.

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