Method for determining data voltage of pixel, display panel driving method, and display apparatus

Abstract

A method for determining a data voltage of a pixel, a display panel driving method, and a display apparatus. The method for determining a data voltage comprises: if the current grayscale value of a target pixel is greater than a preset grayscale value, acquiring an average data voltage difference between pixels in the k-th row and pixels in the (k-1)-th row on the basis of first data voltages of the pixels in the k-th row and first data voltages of the pixels in the (k-1)-th row, k being greater than 1 and not greater than N, and the first data voltages of the pixels being data voltages determined on the basis of display brightness requirements of the pixels (S1); on the basis of the average data voltage difference between the pixels in the k-th row and the pixels in the (k-1)-th row and the current grayscale value of the target pixel, acquiring a grayscale compensation value of the target pixel, the target pixel being located in the k-th row (S2); on the basis of the current grayscale value and the grayscale compensation value of the target pixel, acquiring a target grayscale value of the target pixel (S3); and on the basis of the target grayscale value of the target pixel, acquiring a second data voltage of the target pixel, and recording the second data voltage as a target data voltage (S4).

Description

Pixel data voltage determination method, display panel driving method, display device

[0001] Cross-references to related applications

[0002] This disclosure claims priority to Chinese Patent Application No. 202411262618.5, filed on September 9, 2024, entitled “Method for determining data voltage of a pixel, display panel driving method, display device”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of display technology, and in particular to a method for determining the data voltage of pixels in a display panel, a driving method for a display panel, and a display device. Background Technology

[0004] With the development of display technology, display panels are becoming increasingly common and have become an indispensable part of people's daily work and life. Compared with traditional liquid crystal display panels (LCDs), AMOLED (Active-matrix organic light-emitting diode) display panels have higher response speeds, higher contrast ratios, and lower power consumption. They also support a wider color gamut and thinner screen designs, making them one of the preferred technologies for smartphones and other portable devices. However, currently, AMOLED display panels experience line crosstalk when displaying certain parts of the image, affecting the quality of the displayed picture and thus impacting the user experience.

[0005] Application content

[0006] In view of the above problems, this disclosure provides a method for determining the data voltage of pixels in a display panel, a driving method for a display panel, and a display device to alleviate crosstalk and improve display quality. The specific solution is as follows:

[0007] A method for determining the data voltage of pixels in a display panel, the display panel comprising N pixel rows, each pixel row comprising M pixels, where N and M are both greater than 1, the method comprising:

[0008] If the current grayscale value of the target pixel is greater than the preset grayscale value, the average data voltage difference between the pixels in the k-th row and the pixels in the (k-1)-th row is obtained based on the first data voltage of each pixel in the k-th row and the first data voltage of each pixel in the (k-1)-th row. k is greater than 1 and not greater than N. The first data voltage of each pixel is the data voltage determined based on the display brightness requirements of each pixel.

[0009] Based on the average data voltage difference between the pixels in row k and row (k-1) and the current grayscale value of the target pixel, the grayscale compensation value of the target pixel is obtained, and the target pixel is located in row k.

[0010] Based on the current grayscale value and grayscale compensation value of the target pixel, obtain the target grayscale value of the target pixel;

[0011] Based on the target grayscale value of the target pixel, the second data voltage of the target pixel is obtained, which is denoted as the target data voltage.

[0012] A method for driving a display panel, comprising:

[0013] Using the method described above for determining the data voltage of pixels in a display panel, the target data voltage of each pixel in the display panel is determined;

[0014] When scanning the pixel row where each pixel is located, a data signal is provided to each pixel based on the target data voltage corresponding to each pixel, thereby controlling the display of each pixel.

[0015] A display device, comprising:

[0016] The display panel consists of N pixel rows, each pixel row consists of M pixels, and both N and M are greater than 1;

[0017] The driving circuit uses the method for determining the data voltage of pixels in the display panel to determine the target data voltage of each pixel in the display panel. When scanning the pixel row where each pixel is located, the driving circuit provides data signals to each pixel based on the target data voltage of each pixel to control the display of each pixel. Attached Figure Description

[0018] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale.

[0019] Figure 1 is a schematic diagram of the grayscale difference of display pixels in some positions in adjacent rows when the background is 255 grayscale (medium brightness gray).

[0020] Figure 2 is a schematic diagram of the grayscale difference of some display pixels in adjacent rows when the background is 128 grayscale levels (medium brightness gray).

[0021] Figure 3 is a schematic diagram of the average gray level difference and the corresponding gray level compensation amount for different data voltages.

[0022] Figure 4 is a schematic diagram of the structure of a display panel provided in an embodiment of this disclosure;

[0023] Figure 5 is a flowchart of a method for determining the data voltage of pixels in a display panel according to an embodiment of this disclosure;

[0024] Figure 6 is a flowchart of a method for determining the data voltage of pixels in a display panel according to another embodiment of this disclosure;

[0025] Figure 7 is a schematic diagram of five brightness nodes (Band1, Band2, Band3, Band4, Band5) and their corresponding brightness information, brightness gain storage location, and brightness gain value in a method for determining the data voltage of pixels in a display panel provided in an embodiment of this disclosure.

[0026] Figure 8 is a schematic diagram of three position nodes (Up, Middle, DOWN) and their corresponding position gain storage locations and position gain values ​​in a method for determining the data voltage of pixels in a display panel provided in an embodiment of this disclosure.

[0027] Figure 9 is a schematic diagram showing the relative positions of three location nodes (Up, Middle, Down) in a display panel in a method for determining the data voltage of pixels in a display panel according to an embodiment of this disclosure.

[0028] Figure 10 is a schematic diagram of a method for determining the data voltage of a pixel in a display panel according to an embodiment of the present disclosure, wherein the target pixel is not located in the brightness gain reference pixel row, and the brightness gain of the target pixel is calculated by linear interpolation.

[0029] Figure 11 is a schematic diagram of a method for determining the data voltage of a pixel in a display panel according to an embodiment of the present disclosure, wherein when the target pixel is not located in the position gain reference pixel row, the position gain of the target pixel is calculated by linear interpolation.

[0030] Figure 12 is a schematic diagram of the method for calculating the grayscale compensation value of the target pixel in a method for determining the data voltage of a pixel in a display panel provided in an embodiment of the present disclosure.

[0031] Figure 13 is a schematic diagram of some brightness nodes in the first database and the second database in a method for determining the data voltage of pixels in a display panel provided in an embodiment of the present disclosure.

[0032] Figure 14 is a schematic diagram of some position nodes in the first database and the second database in a method for determining the data voltage of pixels in a display panel provided in an embodiment of this disclosure.

[0033] Figure 15 is a flowchart of a display panel driving method provided in an embodiment of this disclosure;

[0034] Figure 16 is a schematic diagram of the structure of a display device provided in an embodiment of the present disclosure. Detailed Implementation

[0035] The embodiments of this disclosure will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0036] Various modifications and variations can be made to this disclosure without departing from its spirit or scope, as will be apparent to those skilled in the art. Therefore, this disclosure is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in this disclosure can be combined with each other without contradiction.

[0037] To make the above-mentioned objectives, features and advantages of this disclosure more apparent and understandable, the disclosure will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] As described in the background section, AMOLED display panels currently experience crosstalk when displaying images, which affects the quality of the displayed image and thus impacts the user experience.

[0039] This is because the display quality of Organic Light-Emitting Diode (OLED) displays is typically affected by the stability of the OLED display panel's anode voltage (ELVDD). Interference in the ELVDD voltage can cause display distortion or even display abnormalities. When displaying color images (i.e., non-pure color images), AMOLED displays require constant data voltage transitions. In the display panel's wiring, there is a coupling path between the data lines providing the data voltage and the anode lines providing the anode voltage. Therefore, voltage transitions on the data lines affect the anode voltage on the anode lines, which in turn affects the data voltage on the data lines, thus impacting the brightness of the currently displayed pixels. This results in line crosstalk when the AMOLED display panel is displaying a portion of the image, affecting the display quality.

[0040] As shown in Figures 1 and 2, these figures illustrate the grayscale difference between display pixels at different positions along the row direction in two adjacent rows. Specifically, Figure 1 shows a schematic diagram of the grayscale difference between display pixels at different positions in adjacent rows when the background is 255 grayscale (white). For example, the grayscale difference between the S-th display pixel in the R-th row and the S-th display pixel in the (R+1)-th row, where R and S are positive integers. Different black bar areas correspond to different S values. The white background represents 255 grayscale, and the length of the black area represents the magnitude of the grayscale difference. The larger the length of the black area, the larger the corresponding grayscale difference. Specifically, the grayscale difference corresponding to black bar area A is smaller than that corresponding to black bar area B, and the grayscale difference corresponding to black bar area B is smaller than that corresponding to black bar area C.

[0041] As shown in Figure 2, when the background is 128 gray levels (medium brightness gray), the gray level difference of some display pixels in adjacent rows is shown. The gray background represents 128 gray levels, and the length of the black area represents the magnitude of the gray level difference. The longer the black area, the greater the corresponding gray level difference. Specifically, the gray level difference corresponding to black bar area D is less than the gray level difference corresponding to black bar area E, and the gray level difference corresponding to black bar area E is less than the gray level difference corresponding to black bar area F.

[0042] The solution to the line crosstalk phenomenon adopts an overall compensation approach, which is as follows: first, calculate the average gray level difference of the data voltage corresponding to the two adjacent rows of display pixels, and then determine the compensation amount of the data voltage by looking up a table based on the average gray level difference of the data voltage corresponding to the two adjacent rows of display pixels.

[0043] As shown in Figure 3, which illustrates the average grayscale difference of different data voltages and their corresponding compensation amounts, the larger the average grayscale difference of the data voltage, the greater the compensation amount. This solution results in better compensation for display pixels in adjacent rows where the grayscale difference is closer to the average grayscale difference, and worse compensation for display pixels where the grayscale difference is farther from the average grayscale difference. For example, the compensation effect of a display pixel with an average grayscale difference of 10 and a grayscale difference of 9 is better than that of a display pixel with a grayscale difference of 15, and the compensation effect of a display pixel with a grayscale difference of 15 is better than that of a display pixel with a grayscale difference of 4.

[0044] Furthermore, the grayscale value of each display pixel and its corresponding data voltage value are not directly proportional. In different grayscale regions, the change in data voltage corresponding to the same grayscale change is different. For example, a change of 10 grayscale in a high grayscale region may result in a data voltage change of 1V, while a change of 10 grayscale in a low grayscale region may result in a data voltage change of 1.5V. That is, the average grayscale difference between two adjacent rows of display pixels cannot accurately represent the change in data voltage corresponding to two adjacent rows of display pixels, thus the compensation effect obtained by the above solution needs to be improved.

[0045] In view of this, this disclosure provides a method for determining the data voltage of pixels in a display panel. As shown in FIG4, the display panel includes N pixel rows, and each pixel row includes M pixels, where N and M are both greater than 1. Pixels are represented by rectangles in FIG4. For example, the N pixel rows are arranged along a first direction X, and the M pixels are arranged along a second direction Y. The second direction Y is different from the first direction X; specifically, the second direction Y can be perpendicular to the first direction X. In FIG4, the numbers 1 to N arranged along the first direction X represent the 1st to Nth pixel rows, or the 1st to Nth row pixels, respectively. In FIG4, the numbers 1 to M arranged along the second direction Y represent the 1st to Mth pixels in the same row. In this embodiment, as shown in FIG5, the method includes steps S1 to S4.

[0046] S1: If the current grayscale value of the target pixel is greater than the preset grayscale value, based on the first data voltage of each pixel in the kth row and the first data voltage of each pixel in the (k-1)th row, obtain the average data voltage difference between the pixels in the kth row and the pixels in the (k-1)th row, where k is greater than 1 and not greater than N, and the first data voltage of each pixel is the data voltage determined based on the display brightness requirements of each pixel.

[0047] Specifically, in one embodiment of this disclosure, obtaining the average data voltage between the pixels in the k-th row and the pixels in the (k-1)-th row based on the first data voltage of each pixel in the k-th row includes:

[0048] Based on the first data voltage of each pixel in the k-th row, the average data voltage of the pixels in the k-th row is obtained;

[0049] Based on the first data voltage of each pixel in the (k-1)th row, the average data voltage of the pixels in the (k-1)th row is obtained;

[0050] The difference between the average data voltages of the pixels in the k-th row and the pixels in the (k-1)-th row is obtained based on the average data voltages of the pixels in the k-th row and the (k-1)-th row.

[0051] It should be noted that, in the above embodiments, the first data voltage of each pixel in the k-th row is the data voltage determined based on the display brightness requirement of the k-th row, that is, the data voltage determined based on the display information carried in the image data information of each pixel in the k-th row; the first data voltage of each pixel in the (k-1)-th row is the data voltage determined based on the display brightness requirement of the (k-1)-th row, that is, the data voltage determined based on the display information carried in the image data information of each pixel in the (k-1)-th row.

[0052] Since the display information carried in the image information corresponding to each pixel is mainly grayscale information, in one embodiment of this disclosure, as shown in FIG6, the method further includes: obtaining the first data voltage of each pixel in the kth row based on the first grayscale value of each pixel in the kth row, and obtaining the first data voltage of each pixel in the (k-1)th row based on the first grayscale value of each pixel in the (k-1)th row. Specifically, this means obtaining the first data voltage of each pixel in the kth row based on the first grayscale value carried in the image data corresponding to each pixel in the kth row, and obtaining the first data voltage of each pixel in the (k-1)th row based on the first grayscale value carried in the image data corresponding to each pixel in the (k-1)th row.

[0053] Specifically, the current actual display brightness of a pixel is the product of its current grayscale value and its brightness parameter. The brightness parameter is the maximum display brightness information of the display panel, such as the brightness bar information in the device containing the display panel. It should be noted that if pixels have the same current grayscale value, different brightness parameters on the display panel will result in different actual display brightness. Specifically, the brightness parameter of the display panel can be set based on user needs. For example, in brightly lit environments, users can set the brightness parameter lower to reduce power consumption; in dimly lit environments, users can set the brightness parameter higher to improve the visibility of the displayed image.

[0054] Therefore, in one embodiment of this disclosure, continuing as shown in FIG6, obtaining the first data voltage of each pixel in the k-th row based on the first grayscale value of each pixel in the k-th row includes:

[0055] Based on the first grayscale value and brightness parameter of each pixel in the k-th row, the first data voltage of each pixel in the k-th row is obtained through the first database. The brightness parameter represents the brightness information corresponding to the maximum grayscale value. For example, if the maximum grayscale value is 255, the brightness parameter represents the brightness information corresponding to grayscale 255 under the current brightness bar setting of the display panel.

[0056] The first database stores the data voltages corresponding to multiple brightness nodes and multiple grayscale nodes.

[0057] Similarly, continuing as shown in Figure 6, in one embodiment of this disclosure, obtaining the first data voltage of each pixel in the (k-1)th row based on the first grayscale value of each pixel includes:

[0058] Based on the first grayscale value and brightness parameter of each pixel in the (k-1)th row, the first data voltage of each pixel in the (k-1)th row is obtained through a third database. The brightness parameter represents the brightness information corresponding to the maximum grayscale value. For example, if the maximum grayscale value is 255, the brightness parameter represents the brightness information corresponding to grayscale 255 under the current brightness bar setting of the display panel.

[0059] The third database stores the data voltages corresponding to multiple brightness nodes and multiple grayscale nodes.

[0060] It should be noted that in the above embodiments, the first database and the third database can be the same database to simplify the determination method, but this disclosure does not limit this. In other embodiments of this disclosure, the first database and the third database can also be different databases, and this disclosure does not limit this, depending on the specific circumstances.

[0061] The following description uses the example of the first database and the third database being the same database to illustrate the determination method provided in the embodiments of this disclosure.

[0062] To simplify the storage requirements of the first database and thus reduce the space occupied by the determination method provided in this disclosure during operation, in one embodiment of this disclosure, the first database stores data voltages corresponding to some luminance nodes and some grayscale nodes. Specifically, the first database can be a two-dimensional table, where the horizontal axis represents grayscale nodes, the vertical axis represents luminance nodes, and the intersection of each horizontal and vertical axis represents the data voltage corresponding to the combination of the grayscale node and the luminance node.

[0063] Specifically, in one embodiment of this disclosure, if the first grayscale value belongs to one of multiple grayscale nodes and the brightness parameter belongs to one of multiple brightness nodes, the data voltage corresponding to the combination formed by the first grayscale value and the brightness parameter is obtained by searching the first database.

[0064] If the first gray level value does not belong to one of the multiple gray level nodes, but the brightness parameter belongs to one of the multiple brightness nodes, the data voltage corresponding to the combination formed by the adjacent nodes of the first gray level value and the brightness parameter in the first database is obtained by searching the first database, and then the data voltage corresponding to the first gray level value and the brightness parameter is calculated by linear interpolation.

[0065] If the first gray level value belongs to one of multiple gray level nodes, and the brightness parameter does not belong to one of multiple brightness nodes, the data voltage corresponding to the combination formed by the first gray level value and the adjacent brightness nodes of the brightness parameter in the first database is obtained by searching the first database, and then the data voltage corresponding to the first gray level value and the brightness parameter is calculated by linear interpolation.

[0066] If the first grayscale value does not belong to one of the multiple grayscale nodes and the brightness parameter does not belong to one of the multiple brightness nodes, the data voltage corresponding to the combination formed by the adjacent nodes of the first grayscale value and the adjacent brightness nodes of the brightness parameter in the first database is obtained by searching the first database. Then, the data voltage corresponding to the first grayscale value and the brightness parameter is calculated by linear interpolation.

[0067] In another embodiment of this disclosure, the first database may also store the data voltages corresponding to all brightness nodes and all grayscale nodes to reduce the computational load of the determination method. In this embodiment, the data voltages corresponding to the combination of the first grayscale value and brightness parameters are obtained directly by searching the first database.

[0068] S2: Based on the average data voltage difference between the pixels in row k and row (k-1) and the current grayscale value of the target pixel, obtain the grayscale compensation value of the target pixel, where the target pixel is located in row k.

[0069] Optionally, in one embodiment of this disclosure, obtaining the grayscale compensation value of the target pixel based on the average data voltage difference between the pixels in row k and row (k-1) and the current grayscale value of the target pixel includes: obtaining the grayscale compensation value of the target pixel by querying a fourth database based on the average data voltage difference between the pixels in row k and row (k-1) and the current grayscale value of the target pixel. Specifically, the fourth database is a two-dimensional line crosstalk compensation table, wherein one input parameter is the average data voltage difference between the pixels in row k and row (k-1), and the other parameter is the current grayscale value of the target pixel. Optionally, the fourth database adopts CTB 2D LUT1, which refers to a two-dimensional lookup table (2D Lookup Table) used in color conversion.

[0070] Based on the above embodiments, in one embodiment of this disclosure, the method further includes: determining the range of grayscale compensation values ​​for each pixel in the display panel based on the grayscale compensation value required for the area with the most severe line crosstalk in the display screen of the display panel. This allows the determination method provided by the embodiments of this disclosure to take into account display screens with different levels of line crosstalk, as well as display panels with different levels of line crosstalk, thereby improving the compatibility of the determination method provided by the embodiments of this disclosure. Specifically, in one embodiment of this disclosure, the range of grayscale compensation values ​​for each pixel in the display panel can be -8 grayscale to 8 grayscale. In another embodiment of this disclosure, the range of grayscale compensation values ​​for each pixel in the display panel can be -16 grayscale to 16 grayscale. This disclosure does not limit this range; it depends on the grayscale compensation value required for the area with the most severe line crosstalk in the display screen of the display panel. For example, for display panels or display screens with very severe line crosstalk, a larger range of grayscale compensation values ​​is used to obtain higher compensation values. For display panels or display screens with milder line crosstalk, a smaller range of grayscale compensation values ​​is used to obtain higher compensation accuracy.

[0071] Optionally, in one embodiment of this disclosure, the range of grayscale compensation values ​​for each pixel in the display panel can cover the grayscale compensation values ​​required for the area with the most severe line crosstalk in the display screen of the display panel, so as to ensure that the display of each line crosstalk area in the display screen of the display panel can be well compensated. However, this disclosure does not limit this, and it depends on the specific situation.

[0072] It should be noted that in practical applications, only one grayscale compensation value range can be set in the same display panel, or multiple grayscale compensation value ranges can be set. This disclosure does not limit this and depends on the specific situation.

[0073] In the method for determining data voltage provided in this embodiment, the grayscale compensation value of the target pixel is determined based on the average data voltage difference between the pixels in the k-th row and the (k-1)-th row, rather than based on the average grayscale difference between the pixels in the k-th row and the (k-1)-th row. This solves the problem of inaccurate grayscale compensation calculation caused by the different data voltage changes corresponding to the same grayscale change in different grayscale regions. It improves the matching degree between the target data voltage and the data voltage required by the target pixel, alleviates line crosstalk, improves display quality, and thus improves user experience.

[0074] Furthermore, in the data voltage determination method provided in this embodiment, when determining the grayscale compensation value based on the average data voltage difference between the k-th row pixels and the (k-1)-th row pixels, the current grayscale value of the target pixel is also considered. This reduces the probability that the same grayscale compensation value is provided for different display pixels in adjacent rows due to different current grayscale values, resulting in poor compensation effect for some display pixels. This further improves the matching degree between the target data voltage and the data voltage required by the target pixel, alleviates line crosstalk, and improves display quality.

[0075] Optionally, in one embodiment of this disclosure, continuing as shown in FIG6, obtaining the grayscale compensation value of the target pixel based on the average data voltage difference between the pixels in the k-th row and the pixels in the (k-1)-th row and the current grayscale value of the target pixel includes:

[0076] The first gray level compensation value is obtained based on the average data voltage difference between the pixels in the k-th row and the pixels in the (k-1)-th row and the current gray level value of the target pixel;

[0077] The first grayscale compensation value is adjusted to obtain the grayscale compensation value of the target pixel.

[0078] The method for determining data voltage provided in this embodiment first obtains a first grayscale compensation value based on the average data voltage difference between the k-th row pixels and the (k-1)-th row pixels and the current grayscale value of the target pixel. Then, the first grayscale compensation value is adjusted to obtain the grayscale compensation value of the target pixel, thereby further improving the accuracy of the obtained grayscale compensation value of the target pixel, thereby further improving the matching degree between the target data voltage and the data voltage required by the target pixel, further alleviating the line crosstalk phenomenon, and improving the display quality.

[0079] It should be noted that, assuming the average data voltage difference between the pixels in row k and row (k-1) and the current grayscale value of the target pixel are the same, the required grayscale compensation value for the target pixel may differ depending on its position within the N pixel rows. Therefore, in one embodiment of this disclosure, as shown in Figure 6, adjusting the first grayscale compensation value to obtain the grayscale compensation value for the target pixel includes: adjusting the first grayscale compensation value using the position gain and brightness gain of the target pixel to obtain the second grayscale compensation value.

[0080] Furthermore, in practical applications, line crosstalk exists not only in adjacent rows of display pixels but also in non-adjacent rows. Moreover, the impact of line crosstalk varies between different pixel rows; the greater the distance between two pixel rows, the smaller the impact of line crosstalk, while the closer the distance between two pixel rows, the greater the impact of line crosstalk. Therefore, in one embodiment of this disclosure, as shown in FIG6, adjusting the first grayscale compensation value to obtain the grayscale compensation value of the target pixel further includes: adjusting the second grayscale compensation value using the line crosstalk gain to obtain the grayscale compensation value of the target pixel.

[0081] The determination method provided in this embodiment first adjusts the first grayscale compensation value based on the position gain and brightness gain of the target pixel, and then adjusts it a second time based on the line crosstalk gain to further improve the accuracy of the obtained grayscale compensation value of the target pixel, thereby further improving the matching degree between the target data voltage and the data voltage required by the target pixel, further alleviating the line crosstalk phenomenon, and improving the display quality.

[0082] Based on any of the above embodiments, in one embodiment of this disclosure, the N pixel rows include multiple brightness gain reference pixel rows and multiple position gain reference pixel rows arranged along a first direction, as shown in Figures 7-9. Figure 7 shows the brightness gain corresponding to some of the brightness gain reference pixel rows, and Figures 8 and 9 show the position gain corresponding to some of the position gain reference pixel rows. Specifically, Figure 7 shows five brightness nodes (Band1, Band2, Band3, Band4, Band5) and their corresponding brightness information, brightness gain storage locations, and brightness gain values; Figure 8 shows three position nodes (Up, Middle, Down) and their corresponding position gain storage locations and position gain values. In this embodiment, the method further includes:

[0083] The brightness gain of the target pixel is determined based on the brightness gain of the reference pixel row in N pixel rows.

[0084] The position gain of the target pixel is determined based on the position gain of the reference pixel row in the N pixel rows.

[0085] Optionally, based on the above embodiments, in one embodiment of this disclosure, if the target pixel is located in the brightness gain reference pixel row, the gain of the brightness gain reference pixel row where the target pixel is located is the brightness gain of the target pixel; if the target pixel is not located in the brightness gain reference pixel row, the brightness gain of the target pixel is calculated based on the brightness gain of the brightness gain reference pixel rows located on both sides of the target pixel along the first direction.

[0086] As shown in Figure 10, in one embodiment of this disclosure, if the target pixel is not located in the brightness gain reference pixel row, calculating the brightness gain of the target pixel based on the brightness gain of the brightness gain reference pixel rows located on both sides of the target pixel along the first direction includes: if the target pixel is not located in the brightness gain reference pixel row, calculating the brightness gain of the target pixel using linear interpolation based on the brightness gain of the brightness gain reference pixel rows located on both sides of the target pixel along the first direction. For example, continuing as shown in Figure 10, if the pixel row where the target pixel D1 is located is between the w-th brightness gain reference pixel row and the (w-1)-th brightness gain reference pixel row, then the brightness gain of the target pixel D1 is calculated by linear interpolation based on the brightness gain DVB_Gain_w of the w-th brightness gain reference pixel row and the brightness gain DVB_Gain_w-1 of the (w-1)-th brightness gain reference pixel row.

[0087] Based on the above embodiments, in one embodiment of this disclosure, the N pixel rows include multiple brightness gain reference pixel rows, which are uniformly arranged along a first direction in the N pixel rows. However, this disclosure does not limit this. In other embodiments of this disclosure, the brightness gain reference pixel rows may not be uniformly arranged along the first direction in the multiple pixel rows, depending on the specific circumstances.

[0088] Similarly, if the target pixel is located in the position gain reference pixel row, the gain of the target pixel in the position gain reference upward is the position gain of the target pixel; if the target pixel is not located in the position gain reference upward, the position gain of the target pixel is calculated based on the position gain of the position gain reference pixel rows located on both sides of the target pixel along the first direction.

[0089] Optionally, in one embodiment of this disclosure, as shown in FIG9, the first row of pixels (Up) and the last row of pixels (Down) arranged along a first direction in the N pixel rows are position gain reference pixel rows. The first direction is in the plane where the display panel is located and points to the area where the circuit board of the display panel is located (i.e., the lower border area of ​​the display panel). In other embodiments of this disclosure, the N pixel rows may also be selected as the middle pixel row between the first row of pixels and the last row of pixels as position gain reference pixel rows.

[0090] Specifically, in one embodiment of this disclosure, as shown in FIG11, if the target pixel is not located in the position gain reference pixel row, calculating the position gain of the target pixel based on the position gain of the position gain reference pixel row located on both sides of the target pixel along the first direction includes: if the target pixel is not located in the position gain reference pixel row, calculating the position gain of the target pixel using linear interpolation based on the position gain of the position gain reference upward along the first direction located on both sides of the target pixel.

[0091] For example, continuing as shown in Figure 11, if the pixel row containing the target pixel D2 is located between the position gain reference pixel row Up and the position gain reference pixel row Middle, then the position gain of the target pixel D2 is calculated by linear interpolation based on the position gain Pos_Gain_1 of the position gain reference pixel row Up and the position gain Pos_Gain_2 of the position gain reference pixel row Middle; if the pixel row containing the target pixel D3 is located between the position gain reference pixel row Down and the position gain reference pixel row Middle, then the position gain of the target pixel D3 is calculated by linear interpolation based on the position gain Pos_Gain_3 of the position gain reference pixel row Down and the position gain Pos_Gain_2 of the position gain reference pixel row Middle.

[0092] Based on any of the above embodiments, in one embodiment of this disclosure, the average data voltage of the (k-1)th row pixels and the kth row pixels are different, and the method of adjusting the second grayscale compensation value using line crosstalk gain is different. Optionally, in one embodiment of this disclosure, as shown in FIG6, adjusting the second grayscale compensation value using line crosstalk gain includes:

[0093] If the average data voltage difference between the (k-1)th row pixel and the kth row pixel is greater than zero, the gray level compensation value of the target pixel is obtained by using the first gain and the second gray level compensation value.

[0094] If the average data voltage difference between the (k-1)th row pixel and the kth row pixel is less than zero, the gray level compensation value of the target pixel is obtained by using the second gain and the second gray level compensation value.

[0095] The first gain is a positive gain, and the second gain is a negative gain.

[0096] The inventors discovered that in practical applications, line crosstalk mainly affects the display quality of four adjacent rows of display pixels. Therefore, in one embodiment of this disclosure, if N is greater than 4 and k is greater than 1, the second grayscale compensation value is adjusted using the line crosstalk gain to obtain the grayscale compensation value of the target pixel, including:

[0097] The grayscale compensation value of the target pixel is obtained based on the second grayscale compensation value of the (k-2)th row and its corresponding line crosstalk gain weight value, the second grayscale compensation value of the (k-1)th row and its corresponding line crosstalk gain weight value, the second grayscale compensation value of the kth row and its corresponding line crosstalk gain weight value, and the second grayscale compensation value of the (k+1)th row and its corresponding line crosstalk gain weight value.

[0098] As shown in Figure 12, when the number of rows affected by line crosstalk is four, the influence of each pixel row on the grayscale compensation value of the current row is illustrated.

[0099] LCTBO[k] represents the second grayscale compensation value of the k-th pixel row, LCTBO[k-1] represents the second grayscale compensation value of the (k-1)-th pixel row, LCTBO[k-2] represents the second grayscale compensation value of the (k-2)-th pixel row, and LCTBO[k-3] represents the second grayscale compensation value of the (k-3)-th pixel row.

[0100] LineGain represents the weight of the line crosstalk gain, and j represents the relative row. Specifically, LineGain[j-1] represents the weight of the line crosstalk gain of the previous row of pixels in relation to the current row of pixels, that is, LineGain[j-1] represents the weight of the second gray level compensation value of the previous row of pixels in the gray level compensation value of the current row of pixels; LineGain[j-1]×LCTBO[k] represents the product of the weight of the second gray level compensation value of the previous row of pixels in the gray level compensation value of the current row of pixels and the second gray level compensation value of the previous row of pixels in the gray level compensation value of the current row; LineGain[j] represents the weight of the second gray level compensation value of the current row in the gray level compensation value of the current row; LineGain[j+1] represents the weight of the second gray level compensation value of the next row in the gray level compensation value of the current row; LineGain[j+2] represents the weight of the second gray level compensation value of the next row in the gray level compensation value of the current row.

[0101] Specifically, in one embodiment of this disclosure, if the target pixel is located in the (k-1)th pixel row, then the grayscale compensation value of the target pixel is: LCTBO_F(k-1)=LineGain[j+2]×LCTBO[k-3]+LineGain[j+1]×LCTBO[k-2]+LineGain[j]×LCTBO[k-1]+LineGain[j-1]×LCTBO[k].

[0102] It should be noted that in the above embodiments, the method for calculating the grayscale compensation value of the target pixel is described by fixing the effect of line crosstalk to four adjacent rows of display pixels. However, this disclosure does not limit this. In other embodiments of this disclosure, the method provided by the embodiments of this disclosure can also be used to fix the effect of line crosstalk to T adjacent rows of display pixels and calculate the grayscale compensation value of the target pixel, depending on the specific situation, where T is a positive integer.

[0103] S3: Based on the current grayscale value and grayscale compensation value of the target pixel, obtain the target grayscale value of the target pixel.

[0104] Optionally, in one embodiment of this disclosure, obtaining the target grayscale value of the target pixel based on the current grayscale value and the grayscale compensation value of the target pixel includes: summing the current grayscale value and the grayscale compensation value of the target pixel to obtain the target grayscale value of the target pixel.

[0105] S4: Based on the target grayscale value of the target pixel, obtain the second data voltage of the target pixel, denoted as the target data voltage, which is used to provide data voltage to the target pixel.

[0106] Optionally, in one embodiment of this disclosure, obtaining the second data voltage of the target pixel based on the target grayscale value of the target pixel includes: obtaining the second data voltage of the target pixel through a second database based on the target grayscale value and brightness parameters of the target pixel, wherein the second database stores the data voltage corresponding to each grayscale value and each brightness parameter.

[0107] It should be noted that, since the first data voltage is mainly used to calculate the grayscale compensation value of the target pixel, while the second data voltage is the actual supply voltage for the target pixel, the determination method provided in this embodiment has a lower accuracy for the first data voltage of each pixel compared to the accuracy for the second data voltage of the target pixel. The first database can store the data voltages corresponding to some grayscale nodes and brightness nodes, and the data voltages corresponding to other grayscale nodes and brightness nodes are calculated by linear interpolation.

[0108] As shown in Figures 13 and 14, Figure 13 illustrates the number of partial luminance nodes in the second and first databases, and Figure 14 illustrates the number of partial grayscale nodes in the second and first databases. It can be seen from Figures 13 and 14 that the number of luminance nodes and grayscale nodes in the first database is significantly smaller than those in the second database. Optionally, in one embodiment of this disclosure, the number of luminance nodes in the first database is half the number of luminance nodes in the second database, and the number of grayscale nodes in the first database is half the number of grayscale nodes in the second database. This aims to improve the accuracy of the first data voltage of each pixel as much as possible while reducing the number of luminance nodes and grayscale nodes in the first database. However, this disclosure does not limit this to a specific method; the choice depends on the specific circumstances.

[0109] Based on any of the above embodiments, in one embodiment of this disclosure, the method further includes: if the current grayscale value of the target pixel is not greater than a preset grayscale value, then the current grayscale value of the target pixel is the target grayscale value of the target pixel. That is, in this embodiment, if the current grayscale value of the target pixel is not greater than the preset grayscale value, no compensation is made for the grayscale value of the target pixel, so as to avoid the calculated grayscale compensation value being greater than the current grayscale value of the target pixel, thus overcompensating the target pixel and reducing the display quality of the display panel. It should be noted that this disclosure does not limit the specific value of the preset grayscale value; it depends on the specific circumstances.

[0110] In summary, the data voltage determination method provided in this embodiment calculates the grayscale compensation value of the target pixel based on the average data voltage difference between the pixels in the k-th row and the (k-1)-th row, rather than the average grayscale difference between the pixels in the k-th row and the (k-1)-th row. This solves the problem of inaccurate grayscale compensation calculation caused by different data voltage changes corresponding to the same grayscale change in different grayscale regions. It improves the matching degree between the target data voltage and the data voltage required by the target pixel, alleviates line crosstalk, improves display quality, and thus improves user experience.

[0111] Furthermore, in the data voltage determination method provided in this embodiment, when determining the grayscale compensation value based on the average data voltage difference between the k-th row pixels and the (k-1)-th row pixels, the current grayscale value of the target pixel is also considered. This reduces the probability that the same grayscale compensation value is provided for different display pixels in adjacent rows due to different current grayscale values, resulting in poor compensation effect for some display pixels. This further improves the matching degree between the target data voltage and the data voltage required by the target pixel, alleviates line crosstalk, and improves display quality.

[0112] Accordingly, this disclosure also provides a method for driving a display panel, as shown in FIG15, the method comprising:

[0113] S10: Using the method for determining the data voltage of pixels in the display panel provided in any of the above embodiments, determine the target data voltage of each pixel in the display panel;

[0114] S20: When scanning the pixel row where each pixel is located, provide data signals to each pixel based on the target data voltage corresponding to each pixel, and control the display of each pixel.

[0115] Specifically, in one embodiment of this disclosure, determining the target data voltage of each pixel in the display panel using the method for determining the data voltage of pixels in the display panel provided in any of the above embodiments includes: taking each pixel in the display panel as a target pixel, and using the method for determining the data voltage of pixels in the display panel provided in any of the above embodiments to obtain the target data voltage of the target pixel, thereby obtaining the target data voltage of each pixel in the display panel. It should be noted that since the method for obtaining the target data voltage of the target pixel using the method for determining the data voltage of pixels in the display panel provided in any of the above embodiments has been described in detail in the above embodiments, it will not be repeated here. For details, please refer to the description in the method for determining the data voltage of pixels in the display panel provided in any of the above embodiments.

[0116] The display method of the display panel provided in this embodiment of the present disclosure, when scanning the pixel row where each pixel is located and controlling the display of each pixel, provides data signals to each pixel based on the target data voltage corresponding to each pixel, thereby improving the matching degree between the actual data voltage provided to each pixel and the data voltage required by each pixel, improving the display quality of the display panel, and thus improving the user experience.

[0117] Furthermore, this disclosure also provides a display device, which can be a mobile phone, tablet computer, laptop computer, television, or other device with display functionality. This disclosure does not limit the specific device; the choice depends on the specific circumstances. Specifically, as shown in the figures, the display device includes:

[0118] Display panel 100, the display panel includes N pixel rows, each pixel row includes M pixels, N and M are both greater than 1, optionally, the N pixel rows are arranged along a first direction X, and the M pixels are arranged along a second direction Y, the second direction Y is different from the first direction X, specifically, the second direction Y can be perpendicular to the first direction X;

[0119] The driving circuit 200 uses the method for determining the data voltage of pixels in the display panel provided in any of the above embodiments to determine the target data voltage of each pixel in the display panel, and when scanning the pixel row where each pixel is located, it provides a data signal to each pixel based on the target data voltage corresponding to each pixel to control the display of each pixel.

[0120] Specifically, in one embodiment of this disclosure, the display panel includes multiple pixel circuits, each corresponding to a pixel. When the pixel row where each pixel is located is scanned, the circuit outputs a data signal to the corresponding pixel based on the target data voltage provided by the driving circuit, thereby controlling the display of the pixel.

[0121] Since the method for determining the data voltage of a pixel in a display panel using the method provided in any of the above embodiments has been described in detail in the above embodiments, it will not be repeated here. For details, please refer to the description in the method for determining the data voltage of a pixel in a display panel provided in any of the above embodiments.

[0122] It should be noted that, in one embodiment of this disclosure, compared to storing the data voltages corresponding to all brightness nodes and all grayscale nodes in the first database, storing the data voltages corresponding to some brightness nodes and some grayscale nodes in the first database can reduce the space required by the driving circuit.

[0123] In summary, in the display device provided by the embodiments of this disclosure, the driving circuit can use the method for determining the data voltage of pixels in the display panel provided in any of the above embodiments to determine the target data voltage of each pixel in the display panel, and when scanning the pixel row where each pixel is located, provide data signals to each pixel based on the target data voltage corresponding to each pixel, control the display of each pixel, thereby improving the matching degree between the actual data voltage provided to each pixel and the data voltage required by each pixel, improving the display quality of the display panel, and thus improving the user experience.

[0124] The various embodiments in this specification are described in a progressive, parallel, or combined manner. Each embodiment focuses on its differences from other embodiments, and similar or identical parts between embodiments can be referred to interchangeably. For the apparatuses disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple, and relevant parts can be referred to the method section.

[0125] It should be noted that, in the description of this disclosure, the accompanying drawings and embodiments are illustrative rather than restrictive. The same reference numerals identify the same structures throughout the embodiments. Additionally, for ease of understanding and description, the thicknesses of some layers, films, panels, regions, etc., may be exaggerated in the drawings. It is also understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, the element may be directly on the other element or there may be intermediate elements. Furthermore, "on" means positioning an element on or below another element, but does not inherently mean positioning it above another element according to the direction of gravity.

[0126] The terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component positioned centrally at the same time.

[0127] It should also be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or apparatus comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or apparatus that includes the aforementioned element.

[0128] The above description of the disclosed embodiments enables those skilled in the art to make or use this disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for determining the data voltage of pixels in a display panel, the display panel comprising N pixel rows, each pixel row comprising M pixels, where N and M are both greater than 1, the method comprising: If the current grayscale value of the target pixel is greater than the preset grayscale value, the average data voltage difference between the pixels in the k-th row and the pixels in the (k-1)-th row is obtained based on the first data voltage of each pixel in the k-th row and the first data voltage of each pixel in the (k-1)-th row. k is greater than 1 and not greater than N. The first data voltage of each pixel is the data voltage determined based on the display brightness requirements of each pixel. Based on the average data voltage difference between the pixels in row k and row (k-1) and the current grayscale value of the target pixel, a grayscale compensation value for the target pixel is obtained, wherein the target pixel is located in row k. Based on the current grayscale value and grayscale compensation value of the target pixel, the target grayscale value of the target pixel is obtained; Based on the target grayscale value of the target pixel, the second data voltage of the target pixel is obtained, and is denoted as the target data voltage.

2. The determination method according to claim 1, wherein, Based on the average data voltage difference between the pixels in row k and row (k-1) and the current grayscale value of the target pixel, the grayscale compensation value of the target pixel is obtained by: The first gray level compensation value is obtained based on the average data voltage difference between the pixels in the k-th row and the pixels in the (k-1)-th row and the current gray level value of the target pixel; The first grayscale compensation value is adjusted to obtain the grayscale compensation value of the target pixel.

3. The determination method according to claim 2, wherein, Adjusting the first grayscale compensation value to obtain the grayscale compensation value of the target pixel includes: By using the position gain and brightness gain of the target pixel, the first grayscale compensation value is adjusted to obtain the second grayscale compensation value; The grayscale compensation value of the target pixel is obtained by adjusting the second grayscale compensation value using the line crosstalk gain.

4. The determination method according to claim 3, wherein, By adjusting the second grayscale compensation value using the line crosstalk gain, the grayscale compensation value of the target pixel is obtained, including: If the average data voltage difference between the (k-1)th row pixel and the kth row pixel is greater than zero, the gray level compensation value of the target pixel is obtained by applying the first gain to the second gray level compensation value. If the average data voltage difference between the (k-1)th row pixel and the kth row pixel is less than zero, the gray level compensation value of the target pixel is obtained by using the second gain to adjust the second gray level compensation value. Wherein, the first gain is a positive gain, and the second gain is a negative gain.

5. The determination method according to claim 3, wherein, When N is greater than 4 and k is greater than 2, the second grayscale compensation value is adjusted using the line crosstalk gain to obtain the grayscale compensation value of the target pixel, including: The grayscale compensation value of the target pixel is obtained based on the second grayscale compensation value of the (k-2)th row and its corresponding line crosstalk gain weight value, the second grayscale compensation value of the (k-1)th row and its corresponding line crosstalk gain weight value, the second grayscale compensation value of the kth row and its corresponding line crosstalk gain weight value, and the second grayscale compensation value of the (k+1)th row and its corresponding line crosstalk gain weight value.

6. The determining method according to claim 3, wherein, The N pixel rows include multiple brightness gain reference pixel rows and multiple position gain reference pixel rows arranged along a first direction. The method further includes: The brightness gain of the target pixel is determined based on the brightness gain of the reference pixel row in the N pixel rows. The position gain of the target pixel is determined based on the position gain of the reference pixel row in the N pixel rows.

7. The determining method according to claim 6, wherein, If the target pixel is located in the brightness gain reference pixel row, then the gain of the brightness gain reference pixel row where the target pixel is located is the brightness gain of the target pixel; If the target pixel is not located in the brightness gain reference pixel row, the brightness gain of the target pixel is calculated based on the brightness gain of the brightness gain reference pixel rows located on both sides of the target pixel along the first direction; If the target pixel is located in the position gain reference pixel row, then the gain of the position gain reference pixel row where the target pixel is located is the position gain of the target pixel; If the target pixel is not located in the position gain reference pixel row, the position gain of the target pixel is calculated based on the position gain of the position gain reference pixel rows located on both sides of the target pixel along the first direction.

8. The determination method according to claim 7, wherein, The brightness gain reference pixel row is uniformly arranged along a first direction in the N pixel rows; The first and last rows of pixels arranged along the first direction in the N pixel rows are the position gain reference pixel rows.

9. The determining method according to claim 7, wherein, If the target pixel is not located in the brightness gain reference pixel row, calculating the brightness gain of the target pixel based on the brightness gain of the brightness gain reference pixel rows located on both sides of the target pixel along the first direction includes: If the target pixel is not located in the brightness gain reference pixel row, the brightness gain of the target pixel is calculated by linear interpolation based on the brightness gain of the brightness gain reference pixel rows located on both sides of the target pixel along the first direction. If the target pixel is not located in the position gain reference pixel row, calculating the position gain of the target pixel based on the position gain of the position gain reference pixel rows located on both sides of the target pixel along the first direction includes: If the target pixel is not located in the position gain reference pixel row, the position gain of the target pixel is calculated by linear interpolation based on the position gain of the position gain reference pixel rows located on both sides of the target pixel along the first direction.

10. The determination method according to claim 1, wherein, Based on the first data voltage of each pixel in the k-th row and the first data voltage of each pixel in the (k-1)-th row, the average data voltage difference between the pixels in the k-th row and the pixels in the (k-1)-th row is obtained by: Based on the first data voltage of each pixel in the k-th row, the average data voltage of the pixels in the k-th row is obtained; Based on the first data voltage of each pixel in the (k-1)th row, the average data voltage of the pixels in the (k-1)th row is obtained. The difference between the average data voltages of the pixels in the k-th row and the pixels in the (k-1)-th row is obtained based on the average data voltages of the pixels in the k-th row and the (k-1)-th row.

11. The determining method according to claim 10, wherein, The method also includes: Based on the first grayscale value of each pixel in the k-th row, the first data voltage of each pixel in the k-th row is obtained, and based on the first grayscale value of each pixel in the (k-1)-th row, the first data voltage of each pixel in the (k-1)-th row is obtained.

12. The determining method according to claim 11, wherein, Based on the first grayscale value of each pixel in the k-th row, the first data voltage of each pixel in the k-th row is obtained as follows: Based on the first grayscale value and brightness parameter of each pixel in the kth row, the first data voltage of each pixel in the kth row is obtained through the first database. The brightness parameter represents the brightness information corresponding to the maximum grayscale value. The first database stores data voltages corresponding to multiple brightness nodes and multiple grayscale nodes.

13. The determining method according to claim 12, wherein, If the first grayscale value belongs to one of the plurality of grayscale nodes and the brightness parameter belongs to one of the plurality of brightness nodes, the data voltage corresponding to the first grayscale value and the brightness parameter is obtained by searching the first database; If the first grayscale value does not belong to one of the plurality of grayscale nodes, and / or the brightness parameter does not belong to one of the plurality of brightness nodes, the data voltage corresponding to the first grayscale value and / or the adjacent node of the brightness parameter is obtained by searching the first database, and the data voltage corresponding to the first grayscale value and the brightness parameter is calculated by linear interpolation.

14. The determining method according to claim 1, wherein, Based on the target grayscale value of the target pixel, the second data voltage of the target pixel is obtained by including: Based on the target grayscale value and brightness parameters of the target pixel, the second data voltage of the target pixel is obtained through the second database; The second database stores the data voltages corresponding to each grayscale value and each brightness parameter.

15. The determining method according to claim 14, wherein, The number of luminance nodes and grayscale nodes in the second database is greater than the number of luminance nodes and grayscale nodes in the first database. The first database is used to determine the first data voltage of the pixel.

16. The determining method according to claim 1, wherein, The method also includes: If the current grayscale value of the target pixel is not greater than the preset grayscale value, then the current grayscale value of the target pixel is the target grayscale value of the target pixel.

17. A method for driving a display panel, comprising: The target data voltage of each pixel in the display panel is determined using the method for determining the data voltage of a pixel in the display panel according to any one of claims 1-16. When scanning the pixel row where each pixel is located, a data signal is provided to each pixel based on the target data voltage corresponding to each pixel, thereby controlling the display of each pixel.

18. A display device, wherein, include: The display panel includes N pixel rows, each pixel row includes M pixels, and both N and M are greater than 1; The driving circuit uses the method for determining the data voltage of pixels in the display panel according to any one of claims 1-16 to determine the target data voltage of each pixel in the display panel, and when scanning the pixel row where each pixel is located, provides a data signal to each pixel based on the target data voltage corresponding to each pixel to control the display of each pixel.

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