Display panel driving method and display device

Abstract

This application discloses a driving method and display device for a display panel. The display panel in the driving method includes adjacent first pixel columns and second pixel columns, the polarity of the first pixel columns being opposite to that of the second pixel columns. The driving method includes: obtaining a target grayscale value of the image to be displayed on the display panel; obtaining a first target grayscale value of the first pixel column and a second target grayscale value of the second pixel column corresponding to the target grayscale value according to a pre-established grayscale lookup table; obtaining a first target data voltage value of the first pixel column according to the first target grayscale value, and obtaining a second target data voltage value of the second pixel column according to the second target grayscale value; and driving the display panel to display the image according to the first target data voltage value and the second target data voltage value.

Description

Technical Field

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

[0002] In liquid crystal displays (LCDs), to avoid liquid crystal polarization, the polarity of the data voltage signal applied to the sub-pixels needs to be reversed at regular intervals. Column reversal is a common method of polarity reversal, where the polarities of the data signals corresponding to adjacent pixel columns are opposite.

[0003] Because the data signal is affected by the feedthrough voltage, the liquid crystal deflects at different angles under the drive of data signals of different polarities. This results in different brightness levels for pixel columns with positive data signals and those with negative data signals, leading to bright and dark lines on the displayed image. Summary of the Invention

[0004] This application provides a driving method and display device for a display panel, which can improve the problem of bright and dark lines appearing on the display screen.

[0005] On one hand, embodiments of this application provide a driving method for a display panel, wherein the display panel includes a first pixel column and a second pixel column adjacent to the first pixel column, the polarity of a first target data voltage value of the first pixel column is opposite to the polarity of a second target data voltage value of the second pixel column, and the driving method includes: obtaining a target grayscale value of a screen to be displayed on the display panel; obtaining the first target grayscale value of the first pixel column and the second target grayscale value of the second pixel column corresponding to the target grayscale value according to a pre-established grayscale lookup table; obtaining the first target data voltage value of the first pixel column according to the first target grayscale value, and obtaining the second target data voltage value of the second pixel column according to the second target grayscale value; and driving the display panel to display a screen according to the first target data voltage value and the second target data voltage value.

[0006] Optionally, in some embodiments of this application, a grayscale lookup table is established, which includes the correspondence between the target grayscale value of the display panel, the first target grayscale value of the first pixel column, and the second target grayscale value of the second pixel column.

[0007] Optionally, in some embodiments of this application, the display panel includes a first display area and a second display area adjacent to the first display area. The step of establishing the grayscale lookup table includes: driving the display panel to display an image according to the target grayscale value; obtaining multiple first initial brightness values ​​corresponding to the first pixel column located in the first display area under multiple target grayscale values, and obtaining multiple second initial brightness values ​​corresponding to the second pixel column located in the second display area under multiple target grayscale values; calculating a first brightness difference between any first initial brightness value and any second initial brightness value; determining whether the first brightness difference is less than or equal to a first preset threshold; if the first brightness difference is less than or equal to the first preset threshold, obtaining the first target grayscale value and the second target grayscale value corresponding to the first target grayscale value according to the first brightness difference; and establishing the grayscale lookup table according to the target grayscale value, the first target grayscale value, and the second target grayscale value.

[0008] Optionally, in some embodiments of this application, the step of obtaining the target grayscale value of the image to be displayed on the display panel includes: obtaining the target grayscale value of the image to be displayed on the display panel; obtaining a third initial brightness value of the first pixel column and a fourth initial brightness value of the second pixel column according to the target grayscale value; obtaining a first initial data voltage value corresponding to the third initial brightness value and a second initial data voltage value corresponding to the fourth initial brightness value according to a preset lookup table, wherein the preset lookup table includes the correspondence between brightness and voltage.

[0009] Optionally, in some embodiments of this application, the step of obtaining the first target grayscale value of the first pixel column and the second target grayscale value of the second pixel column corresponding to the target grayscale value according to a pre-established grayscale lookup table includes: obtaining the polarity of the first target data voltage value; determining whether the polarity of the first target data voltage value is positive; if the polarity of the first target data voltage value is positive, then obtaining the first target grayscale value of the first pixel column corresponding to the target grayscale value of the image to be displayed according to the pre-established grayscale lookup table, and obtaining the second target grayscale value of the second pixel column according to the first target grayscale value; if the polarity of the first target data voltage value is negative, then obtaining the second target grayscale value of the second pixel column corresponding to the target grayscale value of the image to be displayed according to the pre-established grayscale lookup table, and obtaining the first target grayscale value of the first pixel column according to the second target grayscale value.

[0010] Optionally, in some embodiments of this application, the step of obtaining the polarity of the first target data voltage value includes: obtaining a polarity control signal value; and obtaining the polarity of the first target data voltage value and the polarity of the second target data voltage value based on the polarity control signal value.

[0011] Optionally, in some embodiments of this application, the step of obtaining the first target data voltage value of the first pixel column based on the first target grayscale value, and obtaining the second target data voltage value of the second pixel column based on the second target grayscale value includes: obtaining the first target data voltage value corresponding to the first target grayscale value and the second target data voltage value corresponding to the second target grayscale value according to a preset lookup table, wherein the preset lookup table includes the correspondence between grayscale and voltage; wherein the first target grayscale value of the first pixel column is equal to the target grayscale value of the image to be displayed.

[0012] Optionally, in some embodiments of this application, the driving method further includes: obtaining a first target common voltage value of the first pixel column under a preset grayscale and a second target common voltage value of the second pixel column under the preset grayscale, so as to drive the display panel to display a display image under the target grayscale value according to the first target common voltage value and the second target common voltage value.

[0013] Optionally, in some embodiments of this application, the step of obtaining the first target common voltage value of the first pixel column at a preset grayscale and the second target common voltage value of the second pixel column at the preset grayscale includes: obtaining the first initial common voltage value and the fifth initial brightness value of the first pixel column at the preset grayscale, and obtaining the second initial common voltage value and the sixth initial brightness value of the second pixel column at the preset grayscale; calculating the second brightness difference between the fifth initial brightness value and the sixth initial brightness value; determining whether the second brightness difference is greater than or equal to a second preset threshold; if the second brightness difference is greater than or equal to the second preset threshold, obtaining the first common voltage compensation value of the first pixel column based on the second brightness difference, and / or obtaining the second common voltage compensation value of the second pixel column based on the second brightness difference; adjusting the first initial common voltage value to the first target common voltage value based on the first common voltage compensation value, and / or adjusting the second initial common voltage value to the second target common voltage value based on the second common voltage compensation value.

[0014] On the other hand, this application provides a display device, including: a display panel and a driving circuit, the display panel including a first pixel column and a second pixel column adjacent to the first pixel column; the driving circuit is used to establish a grayscale lookup table, the grayscale lookup table including the correspondence between the target grayscale value of the display panel, the first target grayscale value of the first pixel column and the second target grayscale value of the second pixel column; obtain the target grayscale value of the image to be displayed on the display panel; obtain the first target grayscale value of the first pixel column and the second target grayscale value of the second pixel column corresponding to the target grayscale value according to the pre-established grayscale lookup table; obtain the first target data voltage value of the first pixel column according to the first target grayscale value, and obtain the second target data voltage value of the second pixel column according to the second target grayscale value; drive the display panel to display the image according to the first target data voltage value and the second target data voltage value.

[0015] The display panel driving method and display panel provided in this application obtain a first target grayscale value of a first pixel column corresponding to the target grayscale value of the image to be displayed, and a second target grayscale value of a second pixel column corresponding to the target grayscale value of the image to be displayed, thereby obtaining a first target data voltage value and a second target data voltage value. The display panel is driven to display the image based on the first target data voltage value and the second target data voltage value. This method can accurately compensate for the brightness of the first pixel column under the first target grayscale value and the brightness of the second pixel column under the second target grayscale value, thereby improving the problem of bright and dark lines appearing in the display image of the display panel and thus improving the display effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a display device provided in an embodiment of this application;

[0017] Figure 2 This is a driving schematic diagram of the driving circuit provided in an embodiment of this application;

[0018] Figure 3 This is a timing diagram of the driving circuit provided in an embodiment of this application;

[0019] Figure 4 This is a flowchart of the display panel driving method provided in the first embodiment of this application;

[0020] Figure 5 yes Figure 4 Flowchart of step S20;

[0021] Figure 6 This is a flowchart of a display panel driving method provided in the second embodiment of this application;

[0022] Figure 7 yes Figure 6 Flowchart of step S10;

[0023] Figure 8 This is a schematic diagram of a display panel provided in an embodiment of this application;

[0024] Figure 9 This is a schematic diagram illustrating the relationship between brightness and grayscale of a display panel provided in an embodiment of this application;

[0025] Figure 10 yes Figure 6 Schematic diagram of step S10;

[0026] Figure 11 yes Figure 4 Flowchart of step S30;

[0027] Figure 12 yes Figure 11 Flowchart of step S301;

[0028] Figure 13 This is a flowchart of a display panel driving method provided in the third embodiment of this application;

[0029] Figure 14 yes Figure 13 The flowchart for step S60. Detailed Implementation

[0030] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings. The described technical solutions are for illustrative purposes only and should not be construed as limiting the scope of protection of this application.

[0031] like Figure 1 As shown, an embodiment of this application provides a display device 100, including a display panel 110 and a driving circuit 120.

[0032] Specifically, the display panel 110 includes a first pixel column 10 and a second pixel column 20 adjacent to the first pixel column 10. The first pixel column 10 is electrically connected to a first data line D1, and the second pixel column 20 is electrically connected to a second data line D2. Both the first pixel column 10 and the second pixel column 20 include multiple sub-pixels P. The first pixel column 10 and the second pixel column 20 are each electrically connected to multiple scan lines G. The polarity of the first target data voltage value of the first pixel column 10 is opposite to the polarity of the second target data voltage value of the second pixel column 20.

[0033] Specifically, the driving circuit 120 is used to establish a grayscale lookup table, which includes the correspondence between the target grayscale value of the display panel 110, the first target grayscale value of the first pixel column 10, and the second target grayscale value of the second pixel column 20.

[0034] like Figure 2 and Figure 3 As shown, the driving circuit 120 is also used to acquire the target grayscale value of the image to be displayed on the display panel. It acquires the first target grayscale value of the first pixel column and the second target grayscale value of the second pixel column corresponding to the target grayscale value according to a grayscale lookup table. It acquires the first target data voltage value of the first pixel column based on the first target grayscale value, and the second target data voltage value of the second pixel column based on the second target grayscale value. It drives the display panel to display the image based on the first target data voltage value and the second target data voltage value.

[0035] The driving circuit includes a timing controller or system chip, and is also used to receive the target grayscale value of the image to be displayed and the polarity control signal POL. The polarity control signal includes a first polarity control signal POLH and a second polarity control signal POLL.

[0036] Specifically, the timing controller or system chip includes a positive and negative compensation module (PNC). The PNC is used to control the polarity of the first target data voltage value and the corresponding first target grayscale value according to the polarity control signal POL. At the same time, the PNC controls the polarity of the second target data voltage value and the corresponding second target grayscale value according to the polarity control signal POL.

[0037] In the two consecutively displayed frames, the timing controller or system chip receives a first polarity control signal and a second polarity control signal, respectively. In the first frame (F1), under the control of the first polarity control signal POLH, the timing controller or system chip inputs a positive first initial data voltage P / first target data voltage P to the first data line D1 electrically connected to the first pixel column, and a negative second initial data voltage N / second target data voltage N to the second data line D2 electrically connected to the second pixel column. In the second frame (F2), under the control of the second polarity control signal POLL, the timing controller or system chip inputs a negative first initial data voltage N / first target data voltage N to the first data line D1 electrically connected to the first pixel column, and a positive second initial data voltage P / second target data voltage P to the second data line D2 electrically connected to the second pixel column.

[0038] Specifically, when the polarity of the first initial data voltage / the first target data voltage is positive, the first target grayscale value of the first pixel column is equal to the target grayscale value of the image to be displayed. Correspondingly, when the polarity of the second initial data voltage / the second target data voltage is positive, the second target grayscale value of the second pixel column is equal to the target grayscale value of the image to be displayed.

[0039] The display device provided in this application can accurately compensate for the brightness of the first pixel column and the second pixel column at the target grayscale value, so as to improve the problem of bright and dark lines appearing in the display panel and thus improve the display effect.

[0040] like Figure 4 As shown, an embodiment of this application provides a driving method for a display panel, including:

[0041] S20. Obtain the target grayscale value of the image to be displayed on the display panel.

[0042] like Figure 5 As shown, step S20 includes the following sub-steps:

[0043] S201. Obtain the target grayscale value of the image to be displayed on the display panel.

[0044] S202. Obtain the third initial brightness value of the first pixel column and the fourth initial brightness value of the second pixel column based on the target grayscale value.

[0045] S203. Obtain the first initial data voltage value corresponding to the third initial brightness value and the second initial data voltage value corresponding to the second initial brightness value according to the preset lookup table. The preset lookup table includes the correspondence between brightness and voltage.

[0046] S30. Obtain the first target grayscale value in the first pixel column and the second target grayscale value in the second pixel column corresponding to the target grayscale value according to the pre-established grayscale lookup table.

[0047] like Figure 6 As shown, the procedure before step S20 also includes:

[0048] S10. Establish a grayscale lookup table. The grayscale lookup table includes the correspondence between the target grayscale value of the display panel, the first target grayscale value of the first pixel column, and the second target grayscale value of the second pixel column.

[0049] like Figure 7 As shown, the steps to create a grayscale lookup table include the following sub-steps:

[0050] S101, The display panel displays the image according to the target grayscale value.

[0051] like Figure 8As shown, the display panel 110 includes a first display area AA1 and a second display area AA2 adjacent to the first display area AA1. The first display area AA1 includes a plurality of first pixel columns 10 and a plurality of second pixel columns 20, which are alternately arranged. The second display area AA2 includes a plurality of first pixel columns 10 and a plurality of second pixel columns 20, which are alternately arranged.

[0052] The first pixel column 10 is electrically connected to the first data line D1, and the second pixel column 20 is electrically connected to the second data line D2. Both the first pixel column 10 and the second pixel column 20 include multiple sub-pixels P. The first pixel column 10 and the second pixel column 20 are each electrically connected to multiple scan lines G.

[0053] Specifically, the display panel applies a first initial data voltage value to the first pixel column 10 of the first display area AA1 according to the target grayscale value to illuminate the first pixel column 10 of the first display area AA1, and applies a second initial data voltage value to the second pixel column 20 of the second display area AA2 according to the target grayscale value to illuminate the second pixel column 20 of the second display area AA2. Specifically, the second pixel column 20 of the first display area AA1 and the first pixel column 10 of the second display area AA2 are not illuminated.

[0054] S102. Obtain the first initial brightness value corresponding to the first pixel column located in the first display area under multiple target grayscale values, and obtain the second initial brightness value corresponding to the second pixel column located in the second display area under multiple target grayscale values.

[0055] Specifically, the target grayscale value ranges from 0 to 255. Correspondingly, multiple corresponding first initial brightness values ​​are obtained for the first pixel column in the first display area, where the target grayscale value is between 0 and 255, and multiple corresponding second initial brightness values ​​are obtained for the second pixel column in the second display area. For example... Figure 9 As shown, the example illustrates the first initial brightness value and the second initial brightness value corresponding to the target grayscale values ​​from grayscale 0 to grayscale 29.

[0056] For example, if the target grayscale value of the image to be displayed on the display panel is 19 grayscale, then the first initial brightness value (0.99) of the first display area and the second initial brightness value (1.24) of the second display area are obtained at grayscale 19.

[0057] S103. Calculate the first brightness difference between the first initial brightness value and the second initial brightness value.

[0058] Specifically, the first brightness difference between each first initial brightness value and each second initial brightness value is calculated.

[0059] For example, the target grayscale value of the image to be displayed on the display panel is 19 grayscale, the first initial brightness value of the first display area is 0.99 at grayscale 19, and the second initial brightness value of the second display area is 1.24.

[0060] The target grayscale value of the image to be displayed on the display panel is 17 grayscale. At 17 grayscale, the first initial brightness value of the first display area is 0.80, and the second initial brightness value of the second display area is 1.

[0061] For example, the first initial brightness value of the first display area is calculated to be 0.99, and the first brightness difference between the second initial brightness value of the second display area and 1.24 is 0.25. The first initial brightness value of the first display area is calculated to be 0.80, and the first brightness difference between the second initial brightness value of the second display area and 1 is 0.20. The first initial brightness value of the first display area is calculated to be 0.99, and the first brightness difference between the second initial brightness value of the second display area and 1 is 0.01.

[0062] S104. Determine whether the first brightness difference is less than or equal to the first preset threshold.

[0063] Specifically, it is determined whether the first brightness difference between each first initial brightness value and each second initial brightness value under all gray levels is less than or equal to a first preset threshold.

[0064] The first preset threshold value ranges from 0 to 0.05, and the second preset threshold value ranges from 0, 0.01, 0.02, 0.03, 0.04, and 0.05.

[0065] S105. If the first brightness difference is less than or equal to the first preset threshold, then obtain the first target grayscale value and the second target grayscale value corresponding to the first target grayscale value based on the first brightness difference.

[0066] like Figure 10 As shown, the first initial brightness value of the first display area at grayscale 19 is 0.99, and the second initial brightness value of the second display area at grayscale 17 is 1. The first brightness difference is calculated to be 0.01. At this time, the first brightness difference is within the range of the first preset threshold. Therefore, the first target grayscale value is obtained as grayscale 19 based on the first brightness difference, and the second target grayscale value corresponding to the first target grayscale value is grayscale 17.

[0067] S106. Establish a grayscale lookup table based on the target grayscale value, the first target grayscale value, and the second target grayscale value.

[0068] For example, the target grayscale value of the image to be displayed on the display panel is 19 grayscale, the first target grayscale value is 19 grayscale, and the second target grayscale value is 17 grayscale.

[0069] Following the above operations, the first target grayscale value from grayscale 0 to grayscale 255 and the second target grayscale value corresponding to the first target grayscale value are obtained in sequence to establish a grayscale lookup table (PNC LUT).

[0070] like Figure 11 As shown, step S30 includes the following sub-steps:

[0071] S301, Obtain the polarity of the first target data voltage value.

[0072] like Figure 12 As shown, step S301 includes the following sub-steps:

[0073] S3011, Obtain the polarity control signal value.

[0074] Specifically, the polarity control signal is used to control the polarity of the data voltage value. The polarity control signal includes a positive polarity control signal and a negative polarity control signal.

[0075] S3012. Obtain the polarity of the first target data voltage value and the polarity of the second target data voltage value based on the polarity control signal value.

[0076] The polarity of the first target data voltage value includes both positive and negative polarities. The polarity of the second target data voltage value also includes both positive and negative polarities. For example, a positive first target data voltage value is output under the control of a positive polarity control signal, and a negative first target data voltage value is output under the control of a negative polarity control signal.

[0077] S302. Determine whether the polarity of the first target data voltage value is positive.

[0078] S303. If the polarity of the first target data voltage value is positive, then according to the grayscale lookup table, obtain the first target grayscale value of the first pixel column corresponding to the target grayscale value of the image to be displayed, and obtain the second target grayscale value of the second pixel column according to the first target grayscale value. If the polarity of the first target data voltage value is negative, then according to the pre-established grayscale lookup table, obtain the second target grayscale value of the second pixel column corresponding to the target grayscale value of the image to be displayed, and obtain the first target grayscale value of the first pixel column according to the second target grayscale value.

[0079] Specifically, if the polarity of the first target data voltage value is positive, then the first target grayscale value of the first pixel column is equal to the target grayscale value of the image to be displayed. The second target grayscale value corresponding to the first target grayscale value is then obtained according to the grayscale lookup table.

[0080] If the polarity of the first target data voltage value is negative, then the second target grayscale value of the second pixel column is equal to the target grayscale value of the image to be displayed. The first target grayscale value corresponding to the second target grayscale value is then obtained according to the grayscale lookup table.

[0081] S40. Obtain the first target data voltage value of the first pixel column based on the first target grayscale value, and obtain the second target data voltage value of the second pixel column based on the second target grayscale value.

[0082] Specifically, the first target data voltage value corresponding to the first target grayscale value and the second target data voltage value corresponding to the second target grayscale value are obtained according to a preset lookup table. The preset lookup table includes the correspondence between grayscale and voltage.

[0083] Wherein, if the polarity of the first target data voltage value is positive, the first target grayscale value of the first pixel column is equal to the target grayscale value of the image to be displayed.

[0084] Specifically, in two consecutively displayed frames, the polarities of the first target data voltage values ​​corresponding to the first pixel column are opposite, and the polarities of the second target data voltage values ​​corresponding to the second pixel column are opposite.

[0085] In other words, if the polarity of the first target data voltage value is positive and the polarity of the second target data voltage value is negative in the first frame of two consecutive displays, then the polarity of the second target data voltage value will be positive and the polarity of the first target data voltage value will be negative in the second frame of displays.

[0086] At this point, the second target grayscale value of the second pixel column is equal to the target grayscale value of the image to be displayed. The first target grayscale value corresponding to the second target grayscale value is then obtained according to the grayscale lookup table. This is to improve the flickering problem of the display panel.

[0087] S50: Drive the display panel to display the screen according to the first target data voltage value and the second target data voltage value.

[0088] As a specific implementation method, such as Figure 13 As shown, step S60 is included before step S10:

[0089] S60. Obtain the first target common voltage value of the first pixel column under the preset grayscale and the second target common voltage value of the second pixel column under the preset grayscale, so as to drive the display panel to display the display screen under the target grayscale value according to the first target common voltage value and the second target common voltage value.

[0090] like Figure 14 As shown, step S60 includes the following sub-steps:

[0091] S601. Obtain the first initial common voltage value and the fifth initial brightness value of the first pixel column under the preset grayscale, and obtain the second initial common voltage value and the sixth initial brightness value of the second pixel column under the preset grayscale.

[0092] Specifically, the preset grayscale value ranges from 200 grayscale levels to 255 grayscale levels. Preferably, the preset grayscale value is 255 grayscale levels.

[0093] S602. Calculate the second brightness difference between the fifth initial brightness value and the sixth initial brightness value.

[0094] S603. Determine whether the difference in the second brightness value is greater than or equal to the second preset threshold.

[0095] Specifically, the value range of the second preset threshold includes 0.5 to 2.0. The values ​​of the second preset threshold include 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, and 2.0.

[0096] S604. If the second brightness difference is greater than or equal to the second preset threshold, then obtain the first common voltage compensation value of the first pixel column based on the second brightness difference, and / or obtain the second common voltage compensation value of the second pixel column based on the second brightness difference.

[0097] Specifically, the fifth initial brightness of the first pixel column is adjusted according to the second brightness difference, and / or the sixth initial brightness of the second pixel column is adjusted according to the second brightness difference, so as to obtain the fifth target brightness value of the first pixel column under the preset grayscale and the sixth target brightness value of the second pixel column under the preset grayscale.

[0098] The first common voltage compensation value of the first pixel column is obtained based on the fifth target brightness value, and the second common voltage compensation value of the second pixel column is obtained based on the sixth target brightness value.

[0099] S605. Adjust the first initial common voltage value to the first target common voltage value according to the first common voltage compensation value, and / or adjust the second initial common voltage value to the second target common voltage value according to the second common voltage compensation value.

[0100] Specifically, the display panel displays the image at the target grayscale value based on the first target common voltage value and the second target common voltage value.

[0101] The process after step S60 also includes:

[0102] S10. Establish a grayscale lookup table. The grayscale lookup table includes the correspondence between the target grayscale value of the display panel, the first target grayscale value of the first pixel column, and the second target grayscale value of the second pixel column.

[0103] S20. Obtain the target grayscale value of the image to be displayed on the display panel.

[0104] S30. Obtain the first target grayscale value in the first pixel column and the second target grayscale value in the second pixel column corresponding to the target grayscale value according to the grayscale lookup table.

[0105] S40. Obtain the first target data voltage value of the first pixel column based on the first target grayscale value, and obtain the second target data voltage value of the second pixel column based on the second target grayscale value.

[0106] S50: Drive the display panel to display the screen according to the first target data voltage value and the second target data voltage value.

[0107] The driving method provided in the embodiments of this application establishes a grayscale lookup table, wherein the grayscale lookup table includes the correspondence between the target grayscale value of the display panel, the first target grayscale value of the first pixel column, and the second target grayscale value of the second pixel column. The method obtains the target grayscale value of the image to be displayed on the display panel. Based on the grayscale lookup table, it obtains the first target grayscale value of the first pixel column and the second target grayscale value of the second pixel column corresponding to the target grayscale value. Based on the first target grayscale value, it obtains the first target data voltage value of the first pixel column, and based on the second target grayscale value, it obtains the second target data voltage value of the second pixel column. The method drives the display panel to display the image based on the first and second target data voltage values, enabling precise compensation for the brightness of the first pixel column and the second pixel column at the target grayscale value, thereby improving the problem of bright and dark lines on the displayed image and reducing flickering, thus improving the display effect.

[0108] The above provides a detailed description of a display panel driving method and display device provided by the embodiments of this application. The description of the above embodiments is only for the purpose of helping to understand the core ideas of this application, and the above description should not be construed as a limitation on the scope of protection of this application.

Claims

1. A driving method of a display panel, characterized by, The display panel includes a first pixel column and a second pixel column adjacent to the first pixel column, a polarity of a first target data voltage value of the first pixel column is opposite to a polarity of a second target data voltage value of the second pixel column, and the driving method includes: obtaining a target gray scale value of a picture to be displayed by the display panel; obtaining a first target gray scale value of the first pixel column and a second target gray scale value of the second pixel column corresponding to the target gray scale value according to a pre-established gray scale lookup table; obtaining a first target data voltage value of the first pixel column according to the first target gray scale value and obtaining a second target data voltage value of the second pixel column according to the second target gray scale value; driving the display panel to display a picture according to the first target data voltage value and the second target data voltage value; The driving method further includes: obtaining a first target common voltage value of the first pixel column at a preset gray scale and a second target common voltage value of the second pixel column at the preset gray scale, so as to drive the display panel to display a picture at the target gray scale value according to the first target common voltage value and the second target common voltage value; The step of obtaining the first target common voltage value of the first pixel column at the preset gray scale and the second target common voltage value of the second pixel column at the preset gray scale includes: obtaining a first initial common voltage value and a fifth initial luminance value of the first pixel column at a preset gray scale and obtaining a second initial common voltage value and a sixth initial luminance value of the second pixel column at the preset gray scale; calculating a second luminance difference value of the fifth initial luminance value and the sixth initial luminance value; determining whether the second luminance difference value is greater than or equal to a second preset threshold value; if the second luminance difference value is greater than or equal to the second preset threshold value, obtaining a first common voltage compensation value of the first pixel column according to the second luminance difference value, and / or obtaining a second common voltage compensation value of the second pixel column according to the second luminance difference value; adjusting the first initial common voltage value to a first target common voltage value according to the first common voltage compensation value, and / or adjusting the second initial common voltage value to a second target common voltage value according to the second common voltage compensation value.

2. The driving method of a display panel according to claim 1, wherein The driving method further includes establishing the gray scale lookup table, and the gray scale lookup table includes a corresponding relationship among the target gray scale value, the first target gray scale value of the first pixel column, and the second target gray scale value of the second pixel column.

3. The driving method of the display panel according to claim 2, wherein The display panel includes a first display area and a second display area adjacent to the first display area, and the step of establishing the gray scale lookup table includes: driving the display panel to display a picture according to the target gray scale value; obtaining a plurality of first initial luminance values of the first pixel column located in the first display area corresponding to a plurality of target gray scale values and obtaining a plurality of second initial luminance values of the second pixel column located in the second display area corresponding to the plurality of target gray scale values; calculating a first luminance difference value of any of the first initial luminance value and any of the second initial luminance value; judging whether the first luminance difference value is less than or equal to a first preset threshold value; if the first luminance difference value is less than or equal to the first preset threshold value, obtaining the first target gray scale value and the second target gray scale value corresponding to the first target gray scale value according to the first luminance difference value; establishing the gray scale lookup table according to the target gray scale value, the first target gray scale value and the second target gray scale value.

4. The driving method of a display panel according to claim 1, wherein The step of obtaining the target gray scale value of the to-be-displayed picture of the display panel comprises: obtaining the target gray scale value of the to-be-displayed picture of the display panel; obtaining a third initial luminance value of the first pixel column and a fourth initial luminance value of the second pixel column according to the target gray scale value; obtaining a first initial data voltage value corresponding to the third initial luminance value and a second initial data voltage value corresponding to the fourth initial luminance value according to a preset correspondence table, the preset correspondence table comprising a corresponding relationship between luminance and voltage.

5. The driving method of the display panel according to claim 4, wherein The step of obtaining the first target gray scale value of the first pixel column and the second target gray scale value of the second pixel column corresponding to the target gray scale value according to the pre-established gray scale lookup table comprises: obtaining a polarity of the first target data voltage value; judging whether the polarity of the first target data voltage value is positive polarity; if the polarity of the first target data voltage value is positive polarity, obtaining the first target gray scale value of the first pixel column corresponding to the target gray scale value of the to-be-displayed picture according to the pre-established gray scale lookup table, and obtaining the second target gray scale value of the second pixel column according to the first target gray scale value; if the polarity of the first target data voltage value is negative polarity, obtaining the second target gray scale value of the second pixel column corresponding to the target gray scale value of the to-be-displayed picture according to the pre-established gray scale lookup table, and obtaining the first target gray scale value of the first pixel column according to the second target gray scale value.

6. The driving method of a display panel according to claim 5, wherein The step of obtaining the polarity of the first target data voltage value comprises: obtaining a polarity control signal value; obtaining the polarity of the first target data voltage value and the polarity of the second target data voltage value according to the polarity control signal value.

7. The driving method of the display panel according to claim 1, wherein The step of obtaining the first target data voltage value of the first pixel column according to the first target gray scale value, and obtaining the second target data voltage value of the second pixel column according to the second target gray scale value comprises: obtaining a first target data voltage value corresponding to the first target gray scale value and a second target data voltage value corresponding to the second target gray scale value according to a preset correspondence table, the preset correspondence table comprising a corresponding relationship between gray scale and voltage.

8. A display device, characterized by comprising: comprises: a display panel, the display panel comprising a first pixel column and a second pixel column adjacent to the first pixel column; a driving circuit, the driving circuit being configured to obtain a target gray scale value of a to-be-displayed picture of the display panel; According to a pre-established gray scale lookup table, a first target gray scale value of the first pixel column and a second target gray scale value of the second pixel column corresponding to the target gray scale value are obtained; a first target data voltage value of the first pixel column is obtained according to the first target gray scale value, and a second target data voltage value of the second pixel column is obtained according to the second target gray scale value; According to the first target data voltage value and the second target data voltage value, the display panel is driven to display a picture; The driving circuit is further configured to obtain a first target common voltage value of the first pixel column at a preset gray scale and a second target common voltage value of the second pixel column at the preset gray scale, so as to drive the display panel to display a picture at the target gray scale according to the first target common voltage value and the second target common voltage value; The driving circuit is further configured to obtain a first initial common voltage value and a fifth initial luminance value of the first pixel column at a preset gray scale, and obtain a second initial common voltage value and a sixth initial luminance value of the second pixel column at the preset gray scale; A second luminance difference value of the fifth initial luminance value and the sixth initial luminance value is calculated; It is judged whether the second luminance difference value is greater than or equal to a second preset threshold value; If the second luminance difference value is greater than or equal to the second preset threshold value, a first common voltage compensation value of the first pixel column is obtained according to the second luminance difference value, and / or a second common voltage compensation value of the second pixel column is obtained according to the second luminance difference value; the first initial common voltage value is adjusted to a first target common voltage value according to the first common voltage compensation value, and / or the second initial common voltage value is adjusted to a second target common voltage value according to the second common voltage compensation value.

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