Driving method of display panel and display device

Abstract

The invention discloses a driving method of a display panel and a display device. The driving method comprises the following steps: detecting and judging whether the voltage polarities of sub-pixels connected with a first data line and a second data line in a current frame are the same or not; if yes, sub-pixels connected with first data lines in the first display area are driven in a first driving mode, and sub-pixels connected with second data lines in the second display area are driven in a second driving mode; if not, the first display area and the second display area are driven in a first driving mode or a second driving mode; wherein the first driving mode and the second driving mode are driving modes using different gray-scale values. Different gray-scale values are output to the data lines at the junctions of the adjacent areas, so that the voltage change of the corresponding data lines before polarity conversion is reduced, the value of coupling capacitance of the adjacent data lines is reduced, the brightness of dark lines is reduced, and the display effect is improved.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a driving method and display device for a display panel. Background Technology

[0002] Liquid crystal displays (LCDs) achieve their display purpose by controlling the state of liquid crystal molecules through electrodes on the screen. Even with larger screens, their size doesn't increase proportionally (only the size increases, not the thickness, so many products offer wall-mounting functionality, saving users space). Furthermore, they are much lighter than traditional monitors of the same display area; an LCD TV weighs about one-third of a traditional TV. Therefore, LCDs are also known as "cool displays" or "eco-friendly displays." Currently, LCDs are developing towards higher resolution, higher image quality, and larger sizes. In TFT-LCD driving, the driving method is Line-by-Line (progressive scanning). When the Gn signal is high, the corresponding TFT in that row is turned on, and data in the column direction can be written to the pixel.

[0003] For some special displays, it is necessary to switch the polarity between different areas. There is parasitic capacitance between adjacent data lines and sub-pixels. When the polarity of the data lines at the boundary of adjacent areas is the same, it causes the polarity distribution of the display screen to be discontinuous and the coupling to be inconsistent. This will cause the display at the boundary to be different from the display in other areas, resulting in a picture anomaly. A common phenomenon is that dark lines are likely to appear at the boundary of areas. Summary of the Invention

[0004] The purpose of this application is to provide a driving method and display device for a display panel that can improve the problem of dark lines appearing at the boundary when different display areas undergo polarity conversion.

[0005] This application discloses a driving method for a display panel, the display panel including multiple display areas, two adjacent display areas being a first display area and a second display area, and two adjacent data lines at the boundary between the first display area and the second display area being a first data line and a second data line, respectively. The driving method includes: Detect and determine whether the voltage polarities of the sub-pixels connected to the first data line and the second data line in the current frame are the same; and If they are the same, the first driving method is used to drive the sub-pixels connected to the first data line in the first display area, and the second driving method is used to drive the sub-pixels connected to the second data line in the second display area; if they are different, both the first display area and the second display area are driven by either the first driving method or the second driving method. The first driving method and the second driving method are driving methods that use different grayscale values.

[0006] Optionally, the first driving method includes driving methods that use black insertion, white insertion, or any other grayscale, and the second driving method includes other methods besides the first driving method, wherein the grayscale difference between the first driving method and the second driving method is greater than or equal to 127 grayscale levels.

[0007] Optionally, each frame of the display panel includes a display time and an idle time, the idle time including a first time period and a second time period, the first driving method including a first grayscale driving of a first polarity and a second grayscale driving of a second polarity, the second driving method including a third grayscale driving of a first polarity and a fourth grayscale driving of a second polarity, if the two driving methods are the same, the first driving method is used to drive the sub-pixels connected by the first data line in the first display area, and the second driving method is used to drive the sub-pixels connected by the second data line in the second display area; if the two driving methods are different, the step of driving both the first display area and the second display area using either the first driving method or the second driving method includes: If they are the same, during the first time period, the first gray level of the first polarity is used to drive the sub-pixels connected by the first data line in the first display area, and the third gray level of the first polarity is used to drive the sub-pixels connected by the second data line in the second display area; during the second time period, the second gray level of the second polarity is used to drive the sub-pixels connected by the first data line in the first display area, and the fourth gray level of the second polarity is used to drive the sub-pixels connected by the second data line in the second display area. If they are different, the first display area and the second display area are both driven by either the first driving method or the second driving method. Wherein, the first polarity and the second polarity are a pair of opposite polarities. When the first polarity is positive, the second polarity is negative. The first gray level and the second gray level have opposite polarities but the same gray level value. The third gray level and the fourth gray level have opposite polarities but the same gray level value.

[0008] Optionally, during the display time of the current frame, if the first data line and the second data line use positive polarity first grayscale driving, during the idle time of the current frame, the first data line first uses positive polarity second grayscale driving, and then uses negative polarity second grayscale driving; the second data line first uses positive polarity third grayscale driving, and then uses negative polarity third grayscale driving; during the display time of the next frame, the first data line and the second data line use negative polarity first grayscale driving. The difference between the second gray level and the third gray level is greater than 127 gray levels.

[0009] Optionally, during the display time of the current frame, if the first data line and the second data line use positive polarity third grayscale driving, during the idle time of the current frame, the first data line first uses positive polarity second grayscale driving and then uses negative polarity second grayscale driving, and the second data line first uses positive polarity third grayscale driving and then uses negative polarity third grayscale driving. During the display time of the next frame, the first data line and the second data line use negative polarity third grayscale driving. The difference between the second gray level and the third gray level is greater than 127 gray levels.

[0010] Optionally, during the display time of the current frame, if the first data line and the second data line use positive polarity second grayscale driving, during the idle time of the current frame, the first data line first uses positive polarity second grayscale driving and then uses negative polarity second grayscale driving, and the second data line first uses positive polarity third grayscale driving and then uses negative polarity third grayscale driving. During the display time of the next frame, the first data line and the second data line use negative polarity second grayscale driving. The difference between the second gray level and the third gray level is greater than 127 gray levels.

[0011] Optionally, within the first display area, during the display time and idle time of the current frame, all data lines within the first display area with the same polarity as the first data line are driven using a grayscale with the same polarity and size as the first data line; all data lines within the first display area with the opposite polarity as the first data line are driven using a grayscale with the opposite polarity and size as the first data line; all data lines within the second display area with the same polarity as the second data line are driven using a grayscale with the same polarity and size as the second data line; and all data lines within the second display area with the opposite polarity as the second data line are driven using a grayscale with the opposite polarity and size as the second data line.

[0012] This application also discloses a display device, which includes a display panel and a driving circuit. The driving circuit drives the display panel using any of the driving methods described above. The driving circuit includes a grayscale signal output control module and a polarity detection and judgment module. The polarity detection and judgment module detects and judges the voltage polarity of the sub-pixels connected to the first data line and the second data line in the current frame, and generates a control signal based on the judgment result and outputs it to the grayscale signal output control module. The grayscale signal output control module is connected to the data line. Based on the control signal, the grayscale signal output control module controls the corresponding first data line and second data line to drive them using a first driving mode and a second driving mode, respectively.

[0013] Optionally, the grayscale signal output control module includes a polarity inversion control unit and a source drive unit. The source drive unit outputs a grayscale signal to a data line. The polarity inversion control unit is connected to the source drive unit to control the polarity change of the sub-pixels in the display area. Each frame of the display panel includes a display time and an idle time. During the idle time, the source drive unit inputs the grayscale value corresponding to the first driving mode to the first data line and inputs the grayscale value corresponding to the second driving mode to the second data line. The difference between the grayscale value corresponding to the first driving mode and the grayscale value corresponding to the second driving mode is greater than 127 grayscale levels.

[0014] Optionally, the data lines corresponding to multiple columns of sub-pixels in each display area are connected to the same flip-chip film, and each display area corresponds to a flip-chip film. The source driving unit is disposed on the flip-chip film.

[0015] Compared to the approach of directly inserting white into both display areas before polarity conversion to achieve polarity conversion on the data lines, this application uses different driving methods to drive the data lines at the boundary of adjacent areas before polarity conversion. It detects and determines whether the voltage polarities of the sub-pixels connected to the first and second data lines in the current frame are the same. If they are the same, different grayscale values ​​corresponding to the first and second driving methods are used to drive the sub-pixels connected to the first and second data lines in the first display area. If they are different, both the first and second display areas are driven using either the first or second driving method. By outputting different grayscale values, the voltage change of the corresponding data lines before polarity conversion is reduced, thereby reducing the coupling capacitance of adjacent data lines, reducing the brightness of dark lines, improving the display effect of the display device, and enhancing the user experience. Attached Figure Description

[0016] The accompanying drawings, which form part of the specification, are used to provide a further understanding of the embodiments of this application and illustrate the implementation methods of this application, together with the textual description, to explain the principles of this application. Obviously, the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings: Figure 1 This is a schematic flowchart of the driving method of the first embodiment of this application; Figure 2 This is a schematic diagram of the display panel according to the first embodiment of this application; Figure 3 This is a schematic diagram of the display area according to the first embodiment of this application; Figure 4 This is a schematic flowchart of the driving method according to the second embodiment of this application; Figure 5 This is a schematic diagram of the display area according to the third embodiment of this application; Figure 6 This is a schematic diagram of the grayscale changes in the display area according to the third embodiment of this application; Figure 7 This is a schematic diagram illustrating the grayscale variation of an exemplary display area according to this application; Figure 8 This is a schematic diagram of the grayscale changes in the display area according to the fourth embodiment of this application; Figure 9 This is a schematic diagram of the grayscale changes in the display area according to the fifth embodiment of this application; Figure 10 This is a schematic diagram of the structure of the display device according to the sixth embodiment of this application.

[0017] Among them, 100 is the driving circuit; 110 is the grayscale signal output control module; 111 is the polarity reversal control unit; 112 is the source drive unit; 120 is the polarity detection and judgment module; 200 is the display panel; 210 is the first display area; 220 is the second display area; 300 is the display device; the first data line is S1; the second data line is S2; the flip-chip film is COF; the first polarity signal is POLC1; and the second polarity signal is POLC2. Detailed Implementation

[0018] It should be understood that the terminology, specific structural and functional details used herein are merely for describing particular embodiments and are representative. However, this application may be implemented in many alternative forms and should not be construed as being limited to the embodiments set forth herein.

[0019] The present application will now be described in detail with reference to the accompanying drawings and optional embodiments.

[0020] refer to Figure 1 As shown, as a first embodiment of this application, a method for driving a display panel is disclosed, referring to... Figures 1 to 3 As shown, the display panel 200 includes multiple display areas, with two adjacent display areas being a first display area 210 and a second display area 220. Two adjacent data lines at the boundary between the first display area 210 and the second display area 220 are respectively a first data line S1 and a second data line S2. The driving method includes: S1: Detect and determine whether the voltage polarities of the sub-pixels connected to the first data line and the second data line in the current frame are the same; and S2: If they are the same, the first driving method is used to drive the sub-pixels connected by the first data line in the first display area, and the second driving method is used to drive the sub-pixels connected by the second data line in the second display area; if they are different, both the first display area and the second display area are driven by either the first driving method or the second driving method. The first driving method and the second driving method are driving methods that use different grayscale values.

[0021] In this embodiment, to display specific images in two adjacent display areas, polarity switching is required between the different areas. Parasitic capacitance exists between data lines within each display area and between data lines in adjacent display areas. Generally, different areas are driven by different polarity signals (POLC1 or POLC2). For example, the first display area 210 inputs the first polarity signal POLC1, and the second display area 220 uses the second polarity signal POLC2. If the polarity of the data voltage on the data lines at the boundary of two adjacent display areas is the same, it will lead to an increase in parasitic capacitance, resulting in very obvious dark lines, such as... Figure 2 As shown, in order to improve the brightness of dark lines, the grayscale values ​​of the two data lines at the boundary of adjacent display areas can be adjusted, thereby reducing the size of the parasitic capacitance between the two data lines. By outputting different grayscale values, grayscale differences are actively created to offset the electric field coupling effect at the boundary, so that the voltage change of the corresponding data lines is reduced before the polarity conversion, thereby reducing the value of the coupling capacitance of adjacent data lines, thereby reducing the brightness of dark lines and eliminating dark lines at the boundary of display areas.

[0022] refer to Figure 4 As shown, the second embodiment of this application is a further refinement and improvement of the first embodiment described above. (Refer to...) Figure 3 and Figure 4 As shown, generally, the first display area and the second display area are divided based on the chip-on-film (COF) film, that is, one COF corresponds to one display area. The first display area 210 corresponds to COF1, and the second display area 220 corresponds to COF2. Each frame of the display panel includes display time and idle time. The idle time includes a first time period and a second time period. The first driving method includes a first grayscale driving of a first polarity and a second grayscale driving of a second polarity. The second driving method includes a third grayscale driving of a first polarity and a fourth grayscale driving of a second polarity. If they are the same, the first driving method is used to drive the sub-pixels connected by the first data line in the first display area, and the second driving method is used to drive the sub-pixels connected by the second data line in the second display area. If they are not the same, the first display area and the second display area are both driven by either the first driving method or the second driving method. The steps include: S21: If they are the same, during the first time period, the first gray level of the first polarity is used to drive the sub-pixels connected by the first data line in the first display area, and the third gray level of the first polarity is used to drive the sub-pixels connected by the second data line in the second display area; during the second time period, the second gray level of the second polarity is used to drive the sub-pixels connected by the first data line in the first display area, and the fourth gray level of the second polarity is used to drive the sub-pixels connected by the second data line in the second display area. S22: If they are not the same, then both the first display area and the second display area are driven by either the first driving method or the second driving method. Wherein, the first polarity and the second polarity are a pair of opposite polarities. When the first polarity is positive, the second polarity is negative. The first gray level and the second gray level have opposite polarities but the same gray level value. The third gray level and the fourth gray level have opposite polarities but the same gray level value, which forces synchronous charge distribution and avoids leakage current caused by reverse electric field.

[0023] In this embodiment, the two display areas use different driving methods, and the grayscale values ​​corresponding to the two driving methods are different. The first driving method includes driving methods that use black insertion, white insertion, or any other grayscale. The second driving method includes other methods besides the first driving method. The grayscale difference between the first driving method and the second driving method is greater than or equal to 127 grayscale. A certain grayscale difference is actively generated to offset the electric field coupling effect at the boundary. No hardware structure needs to be modified, and dark lines are eliminated only through the driving algorithm.

[0024] As a third embodiment of this application, reference is made to Figure 5 and Figure 6 The diagram illustrates a further refinement and improvement of the second embodiment described above. During the display time of the current frame, if the first data line and the second data line use positive polarity first grayscale driving, during the idle time of the current frame, the first data line first uses positive polarity second grayscale driving, and then uses negative polarity second grayscale driving; the second data line first uses positive polarity third grayscale driving, and then uses negative polarity third grayscale driving; during the display time of the next frame, the first data line and the second data line use negative polarity first grayscale driving; wherein, the difference between the second grayscale and the third grayscale is greater than 127 grayscale levels.

[0025] Specifically, within the first display area, during the display time and idle time of the current frame, all data lines within the first display area with the same polarity as the first data line are driven using a grayscale with the same polarity and size as the first data line; all data lines within the first display area with the opposite polarity as the first data line are driven using a grayscale with the opposite polarity and size as the first data line; and all data lines within the second display area with the same polarity as the second data line are driven using a grayscale with the opposite polarity and size as the second data line.

[0026] In this embodiment, the example of a white-filled first display area and a black-filled second display area is used for illustration. During the display time, if the data lines in both the first and second display areas are positive input data signals of the first gray level (127 gray levels), then the waveform during the idle time (V-Blanking) is as follows: Figure 1 Similar to the 127 grayscale in the first display area (COF1) and the remaining positions in the second display area (COF2), the vertical trend is completely consistent, and the display is unaffected by the polarity change of the V-blanking area. However, at the boundary, namely the first data line S1 of the first display area and the second data line S2 of the second display area, S1 requires white insertion. The voltage first rises from the positive polarity 127 grayscale to the positive polarity 255 grayscale, and then, when the polarity reverses, it rises from the positive polarity 255 grayscale again. The voltage drops to a negative polarity of 255 grayscale, and then rises again to a negative polarity of 127 grayscale when the next frame is displayed. Because of black insertion, voltage S2 first drops from a positive polarity of 127 grayscale to a positive polarity of 0 grayscale, then, when the polarity reverses, drops from a positive polarity of 0 grayscale to a negative polarity of 0 grayscale, and then drops again to a negative polarity of 127 grayscale when the next frame is displayed. Overall, the sum of the three voltage changes S1 and S2 in V-blanking is greater than... Figure 7 If the amplitude of the white insertion in the middle is low, it indicates that the phenomenon has improved.

[0027] As a fourth embodiment of this application, and a further refinement and improvement of the second embodiment described above, unlike the third embodiment, during the display time of the current frame, if the first data line and the second data line use a positive polarity third grayscale, i.e., a positive polarity 0 grayscale drive, during the idle time of the current frame, the first data line first uses a positive polarity second grayscale, i.e., a positive polarity 255 grayscale drive, and then uses a negative polarity second grayscale drive; the second data line first uses a positive polarity third grayscale drive, and then uses a negative polarity third grayscale drive; during the display time of the next frame, the first data line and the second data line use a negative polarity third grayscale drive; wherein, the difference between the second grayscale and the third grayscale is greater than 127 grayscale, i.e., 255 grayscale.

[0028] Taking a 0-grayscale data signal with positive polarity as the input data line in the first and second display areas as an example, refer to... Figure 5 and Figure 8 As shown, the positions of COF1 (excluding the first data line) and COF2 (excluding the second data line) exhibit completely consistent upward and downward trends, indicating that they are unaffected by the polarity changes in the V-blanking region. At the boundary, namely S1 and S2, S1 requires white insertion, so the voltage first rises from positive polarity 0 grayscale to positive polarity 255 grayscale. Then, when the polarity reverses, it falls from positive polarity 255 grayscale to negative polarity 255 grayscale. When the next frame is displayed, it rises from negative polarity 255 grayscale to negative polarity 0 grayscale. S2 requires black insertion, so the voltage first remains at positive polarity 0 grayscale. Then, when the POL reverses, it falls from positive polarity 0 grayscale to negative polarity 0 grayscale. When the next frame is displayed, it remains at negative polarity 0 grayscale. Overall, the sum of the three voltage changes in V-blanking during the idle time, S1 and S2, is lower than the amplitude of white insertion in the background 8, indicating that the phenomenon has been improved.

[0029] As the fifth embodiment of this application, and a further refinement and improvement of the second embodiment described above, unlike the third embodiment, during the display time of the current frame, if the first data line and the second data line use positive polarity second grayscale driving, during the idle time of the current frame, the first data line first uses positive polarity second grayscale driving, and then uses negative polarity second grayscale driving; the second data line first uses positive polarity third grayscale driving, and then uses negative polarity third grayscale driving; during the display time of the next frame, the first data line and the second data line use negative polarity second grayscale driving; wherein, the difference between the second grayscale and the third grayscale is greater than 127 grayscale levels.

[0030] Specifically, for the case where the grayscale value on the data lines in the first and second display areas is a positive grayscale of 255 within the display time, the V-Blanking waveform is as follows: Figure 9 The 255 grayscale values ​​are the same as those in the reference. Figure 5 and Figure 9 As shown, in COF1, the positions other than the first data line, and in COF2, the positions other than the second data line, show completely consistent upward and downward trends, indicating that they are not affected by the polarity changes in the V-blanking region; however, at the boundary, i.e., S1 and S2, S1 requires white insertion, so the voltage first drops directly from positive 255 grayscale to positive 255 grayscale. Then, when POL reverses, it drops again from positive 255 grayscale to negative 255 grayscale. When the next frame is displayed, it drops directly from negative 255 grayscale to negative 255 grayscale. S2 requires black insertion, so the voltage first drops from positive 255 grayscale to positive 0 grayscale. Then, when POL reverses, it drops again from positive 0 grayscale to negative 0 grayscale. When the next frame is displayed, it drops again from negative 0 grayscale to negative 255 grayscale. Overall, the sum of the three voltage changes in V-blanking, S1 and S2, is lower than the amplitude of white insertion in the background 8, indicating that the phenomenon has been improved.

[0031] Referring to Figure 10, as a sixth embodiment of this application, a display device is disclosed. Figure 5 and Figure 10 As shown, the display device 300 includes a display device 200 and a driving circuit 100. The driving circuit 100 drives the display panel 200 using the driving method described in any of the above embodiments. The driving circuit 100 includes a grayscale signal output control module 110 and a polarity detection and judgment module 120. The polarity detection and judgment module 120 detects and judges the voltage polarity of the sub-pixels connected to the first data line and the second data line in the current frame, and generates a control signal based on the judgment result and outputs it to the grayscale signal output control module 110. The grayscale signal output control module 110 is connected to the data line. Based on the control signal, the grayscale signal output control module 110 controls the corresponding first data line and second data line to drive them using a first driving mode and a second driving mode, respectively.

[0032] Furthermore, the grayscale signal output control module 110 includes a polarity inversion control unit 111 and a source drive unit 112. The source drive unit 112 outputs grayscale signals to the data line. The polarity inversion control unit 111 is connected to the source drive unit 112 to control the polarity change of the sub-pixels in the display area. Each frame of the display panel includes display time and idle time. During the idle time, the source drive unit inputs the grayscale value corresponding to the first driving mode to the first data line S1 and inputs the grayscale value corresponding to the second driving mode to the second data line. The difference between the grayscale value corresponding to the first driving mode and the grayscale value corresponding to the second driving mode is greater than 127 grayscale levels.

[0033] When dividing the display panel into regions, the main reference is the chip-on-film (COF). The data lines corresponding to multiple columns of sub-pixels in each display region are connected to the same COF. Each display region corresponds to one COF, and the source driving unit is disposed on the COF. Alternatively, the first display region and the second display region can also be two display screens, i.e., the display panel adopts a foldable screen. The folding point of the foldable screen is the boundary of the display region, and the above driving method can also be used for driving.

[0034] It should be noted that the limitations on the steps involved in this solution, without affecting the implementation of the specific solution, are not considered as limiting the order of the steps. That is, the steps listed first can be performed first, later, or even simultaneously. As long as this solution can be implemented, it should be considered to fall within the protection scope of this application. The inventive concept of this application can form many embodiments, but due to space limitations in the application documents, they cannot all be listed. Therefore, without conflict, the embodiments described above or the technical features can be arbitrarily combined to form new embodiments. The combination of embodiments or technical features will enhance the original technical effect.

[0035] The above description, in conjunction with specific optional embodiments, provides a further detailed explanation of this application and should not be construed as limiting the specific implementation of this application to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this application, and all such modifications or substitutions should be considered within the scope of protection of this application.

Claims

1. A driving method for a display panel, the display panel comprising multiple display areas, wherein two adjacent display areas are a first display area and a second display area, characterized in that, The two adjacent data lines at the boundary between the first display area and the second display area are respectively the first data line and the second data line, and the driving method includes: Detect and determine whether the voltage polarities of the sub-pixels connected to the first data line and the second data line in the current frame are the same; and If they are the same, the first driving method is used to drive the sub-pixels connected to the first data line in the first display area, and the second driving method is used to drive the sub-pixels connected to the second data line in the second display area; if they are different, both the first display area and the second display area are driven by either the first driving method or the second driving method. The first driving method and the second driving method are driving methods that use different grayscale values.

2. The driving method as described in claim 1, characterized in that, The first driving method includes driving methods that use black insertion, white insertion, or any other grayscale, and the second driving method includes other methods besides the first driving method. The grayscale difference between the first driving method and the second driving method is greater than or equal to 127 grayscale levels.

3. The driving method as described in claim 1 or 2, characterized in that, Each frame of the display panel includes display time and idle time. The idle time includes a first time period and a second time period. The first driving method includes a first grayscale driving with a first polarity and a second grayscale driving with a second polarity. The second driving method includes a third grayscale driving with a first polarity and a fourth grayscale driving with a second polarity. If the first driving method is the same, the first driving method is used to drive the sub-pixels connected by the first data line in the first display area, and the second driving method is used to drive the sub-pixels connected by the second data line in the second display area. If they are different, the steps for driving both the first display area and the second display area using either the first driving method or the second driving method include: If they are the same, during the first time period, the first gray level of the first polarity is used to drive the sub-pixels connected by the first data line in the first display area, and the third gray level of the first polarity is used to drive the sub-pixels connected by the second data line in the second display area; during the second time period, the second gray level of the second polarity is used to drive the sub-pixels connected by the first data line in the first display area, and the fourth gray level of the second polarity is used to drive the sub-pixels connected by the second data line in the second display area. If they are different, the first display area and the second display area are both driven by either the first driving method or the second driving method. Wherein, the first polarity and the second polarity are a pair of opposite polarities. When the first polarity is positive, the second polarity is negative. The first gray level and the second gray level have opposite polarities but the same gray level value. The third gray level and the fourth gray level have opposite polarities but the same gray level value.

4. The driving method as described in claim 3, characterized in that, During the display time of the current frame, if the first data line and the second data line use positive polarity first grayscale driving, during the idle time of the current frame, the first data line first uses positive polarity second grayscale driving, and then uses negative polarity second grayscale driving; the second data line first uses positive polarity third grayscale driving, and then uses negative polarity third grayscale driving; during the display time of the next frame, the first data line and the second data line use negative polarity first grayscale driving. The difference between the second gray level and the third gray level is greater than 127 gray levels.

5. The driving method as described in claim 3, characterized in that, During the display time of the current frame, if the first data line and the second data line use positive polarity third grayscale driving, during the idle time of the current frame, the first data line first uses positive polarity second grayscale driving and then uses negative polarity second grayscale driving, and the second data line first uses positive polarity third grayscale driving and then uses negative polarity third grayscale driving. During the display time of the next frame, the first data line and the second data line use negative polarity first grayscale driving. The difference between the second gray level and the third gray level is greater than 127 gray levels.

6. The driving method as described in claim 3, characterized in that, During the display time of the current frame, if the first data line and the second data line use positive polarity second grayscale driving, during the idle time of the current frame, the first data line first uses positive polarity second grayscale driving and then uses negative polarity second grayscale driving, and the second data line first uses positive polarity third grayscale driving and then uses negative polarity third grayscale driving. During the display time of the next frame, the first data line and the second data line use negative polarity second grayscale driving. The difference between the second gray level and the third gray level is greater than 127 gray levels.

7. The driving method according to any one of claims 4 to 6, characterized in that, Within the first display area, during the display time and idle time of the current frame, all data lines within the first display area with the same polarity as the first data line are driven using a grayscale with the same polarity and size as the first data line. All data lines within the first display area with the opposite polarity as the first data line are driven using a grayscale with the opposite polarity and size as the first data line. Within the second display area, all data lines with the same polarity as the second data line are driven using a grayscale with the same polarity and size as the second data line. All data lines within the second display area with the opposite polarity as the second data line are driven using a grayscale with the opposite polarity and size as the second data line.

8. A display device, the display device comprising a display panel and a driving circuit, characterized in that, The driving circuit drives the display panel using the driving method described in any one of claims 1-7. The driving circuit includes a grayscale signal output control module and a polarity detection and judgment module. The polarity detection and judgment module detects and judges the voltage polarity of the sub-pixels connected to the first data line and the second data line in the current frame. Based on the judgment result, it generates a control signal and outputs it to the grayscale signal output control module. The grayscale signal output control module is connected to the data line. Based on the control signal, the grayscale signal output control module controls the corresponding first data line and second data line to drive them using a first driving mode and a second driving mode, respectively.

9. The display device as claimed in claim 8, characterized in that, The grayscale signal output control module includes a polarity inversion control unit and a source drive unit. The source drive unit outputs a grayscale signal to a data line. The polarity inversion control unit is connected to the source drive unit to control the polarity change of the sub-pixels in the display area. Each frame of the display panel includes a display time and an idle time. During the idle time, the source drive unit inputs the grayscale value corresponding to the first driving mode to the first data line and inputs the grayscale value corresponding to the second driving mode to the second data line. The difference between the grayscale value corresponding to the first driving mode and the grayscale value corresponding to the second driving mode is greater than 127 grayscale levels.

10. The display device as claimed in claim 8, characterized in that, The data lines corresponding to multiple columns of sub-pixels in each display area are connected to the same flip-chip film, and each display area corresponds to a flip-chip film. The source driving unit is disposed on the flip-chip film.

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