Display control method of display panel, mobile terminal and storage medium

Abstract

The invention provides a display control method of a display panel, a mobile terminal and a storage medium. The display control method comprises the steps of obtaining image data of a to-be-displayed picture; at least according to the image data, it is determined that smear color cast exists when the display panel displays the to-be-displayed picture, and when smear color cast exists when the display panel displays the to-be-displayed picture, a first set of parameters are called to drive the display panel to display at least one frame of to-be-displayed picture, the first set of parameters comprises a corresponding relation between n gray scales of various primary colors and m first data voltages, and at least one preset gray scale exists in the n gray scales; the first data voltage of the primary color corresponding to the sub-pixel with the high excitation speed is lower than the first data voltage of the primary color corresponding to the sub-pixel with the low excitation speed. According to the display control method of the display panel, the problem of smear color cast can be solved.

Description

Technical Field

[0001] The present application relates to the field of display technologies, and in particular, to a display control method for a display panel, a mobile terminal, and a storage medium. Background Art

[0002] OLED (Organic Light-Emitting Diode) display screens adopt self-luminous technologies and have the properties of being thinner and lighter, having high brightness, low power consumption, fast response, high clarity, good flexibility, and high luminous efficiency, and can meet the new demands of consumers for display technologies. However, due to the differences in the aperture ratios of sub-pixels of different primary colors and the electrical characteristics of the light-emitting materials in existing OLED display panels, the excitation speeds of sub-pixels of different primary colors are different. Furthermore, the display brightness of each sub-pixel in the first frame is different, which will cause problems such as smear and color shift in the displayed image. Summary of the Invention

[0003] To solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a display control method for a display panel, a mobile terminal, and a storage medium.

[0004] To achieve the above object, a first aspect of the present application provides a display control method for a display panel, which is applied to a driving circuit of a display panel. The display panel includes sub-pixels of a primary colors, and at least some of the sub-pixels of the a primary colors have different excitation speeds under the same excitation conditions, where a>1. The display control method includes:

[0005] Obtain image data of a to-be-displayed image;

[0006] Determine that there is smear and color shift when the display panel displays the to-be-displayed image at least based on the image data; and

[0007] When there is smear and color shift when the display panel displays the to-be-displayed image, call a first set of parameters to drive the display panel to display at least one frame of the to-be-displayed image. The first set of parameters includes the correspondence between n gray levels of various primary colors and m first data voltages, and there is at least one preset gray level among the n gray levels. Under each preset gray level in the first set of parameters, the first data voltage of the primary color corresponding to the sub-pixel with a faster excitation speed is lower than the first data voltage of the primary color corresponding to the sub-pixel with a slower excitation speed, where n>1 and m>1.

[0008] The display control method of the display panel provided by the present application determines that when there is smear color deviation in the display panel when displaying the to-be-displayed picture, the first set of parameters is called to drive the display panel to display at least one frame of the to-be-displayed picture, which can enable the driving display panel to provide a lower first data voltage for the sub-pixels with faster excitation speed at least when displaying the first frame of the picture, so that the lighting-up speeds of the sub-pixels of different primary colors tend to be balanced, and further improve the problem of smear color deviation.

[0009] Optionally, the calling the first set of parameters to drive the display panel to display at least one frame of the to-be-displayed picture includes:

[0010] Calling the first set of parameters to drive the display panel to display the to-be-displayed picture; and

[0011] When the number of frames of calling the first set of parameters to drive the display panel to display the to-be-displayed picture is equal to the preset number of frames, calling the second set of parameters to continue driving the display panel to display the to-be-displayed picture; wherein, the second set of parameters includes the correspondence between n gray levels of various primary colors and m second data voltages, and the second data voltages of various primary colors are equal under each gray level in the second set of parameters.

[0012] Optionally, the display control method further includes:

[0013] When there is no smear color deviation in the display panel when displaying the to-be-displayed picture, calling the second set of parameters to drive the display panel to display the to-be-displayed picture; wherein, the second set of parameters includes the correspondence between n gray levels of various primary colors and m second data voltages, and the second data voltages of various primary colors are equal under each gray level in the second set of parameters.

[0014] Optionally, the determining that there is smear color deviation in the display panel when displaying the to-be-displayed picture at least according to the image data includes:

[0015] Determining the target gray level of each sub-pixel according to the image data;

[0016] Obtaining the current brightness value of the display panel;

[0017] Judging whether the to-be-displayed picture is a sliding picture; and

[0018] Determining that there is smear color deviation in the display panel when displaying the to-be-displayed picture according to the target gray level of each sub-pixel, the current brightness value of the display panel, and the judgment result of whether the to-be-displayed picture is a sliding picture.

[0019] Optionally, determining that there is smear color cast when the display panel displays the to-be-displayed picture according to the target gray levels of the sub-pixels, the current brightness value of the display panel, and the judgment result of whether the to-be-displayed picture is a sliding picture includes:

[0020] Calculating an average value of the target gray levels of the sub-pixels according to the target gray levels of the sub-pixels; and

[0021] When the average value of the target gray levels is lower than a preset low gray level threshold, the current brightness value is lower than a preset low brightness threshold, and the to-be-displayed picture is a sliding picture, it is determined that there is smear color cast when the display panel displays the to-be-displayed picture;

[0022] The display control method further includes:

[0023] When the average value of the target gray levels is higher than the preset low gray level threshold, and / or the current brightness value is higher than the preset low brightness threshold, and / or the to-be-displayed picture is not a sliding picture, it is determined that there is no smear color cast when the display panel displays the to-be-displayed picture.

[0024] Optionally, before acquiring the image data of the to-be-displayed picture, the display control method further includes:

[0025] By comparing the first-frame brightness and the stable-frame brightness when the display panel displays the highest gray level pure color pictures of various primary colors respectively, adjusting the second data voltages of at least one primary color corresponding to each preset gray level in the second set of parameters to obtain corresponding first data voltages, thereby obtaining the first set of parameters.

[0026] Optionally, the adjusting the second data voltages of at least one primary color corresponding to each preset gray level in the second set of parameters by comparing the first-frame brightness and the stable-frame brightness when the display panel displays the highest gray level pure color pictures of various primary colors respectively to obtain corresponding first data voltages, thereby obtaining the first set of parameters includes:

[0027] Driving the display panel to display the highest gray level pure color pictures of various primary colors respectively;

[0028] Detecting the first-frame brightness when the display panel displays the highest gray level pure color pictures of various primary colors;

[0029] Detecting the stable-frame brightness when the display panel displays the highest gray level pure color pictures of various primary colors;

[0030] Calculating the first-frame brightness ratios of various primary colors; wherein, the first-frame brightness ratio of each primary color is the ratio of the first-frame brightness of the primary color to the stable-frame brightness; and

[0031] Compare the first-frame brightness ratios of various primary colors, and adjust the second data voltages of at least one primary color corresponding to each preset gray level in the second set of parameters according to the comparison results to obtain the corresponding first data voltages, thereby obtaining the first set of parameters.

[0032] Optionally, the comparing the first-frame brightness ratios of various primary colors, and adjusting the second data voltages of at least one primary color corresponding to each preset gray level in the second set of parameters according to the comparison results to obtain the corresponding first data voltages, thereby obtaining the first set of parameters, includes:

[0033] Taking one of the a primary colors as a reference primary color, reducing the second data voltages of the primary colors in the second set of parameters whose first-frame brightness ratios are higher than the reference primary color corresponding to each preset gray level to obtain the corresponding first data voltages, and increasing the second data voltages of the primary colors in the second set of parameters whose first-frame brightness ratios are lower than the reference primary color corresponding to each preset gray level to obtain the corresponding first data voltages, thereby obtaining the first set of parameters.

[0034] Optionally, the taking one of the a primary colors as a reference primary color, reducing the second data voltages of the primary colors in the second set of parameters whose first-frame brightness ratios are higher than the reference primary color corresponding to each preset gray level to obtain the corresponding first data voltages, and increasing the second data voltages of the primary colors in the second set of parameters whose first-frame brightness ratios are lower than the reference primary color corresponding to each preset gray level to obtain the corresponding first data voltages, thereby obtaining the first set of parameters, includes:

[0035] Determine the primary color with the lowest first-frame brightness ratio as the reference primary color;

[0036] Determine the second data voltages of the reference primary color corresponding to each gray level in the second set of parameters, and the second data voltages of all primary colors corresponding to each non-preset gray level in the second set of parameters as the corresponding first data voltages; wherein, the non-preset gray levels are the gray levels other than the preset gray levels among the n gray levels; and

[0037] Based on the second set of parameters and the first-frame brightness ratios of various primary colors, determine the first data voltages of the primary colors to be adjusted corresponding to each preset gray level, thereby obtaining the first set of parameters; wherein, the primary colors to be adjusted are the primary colors whose first-frame brightness ratios are different from the reference primary color.

[0038] Optionally, the second set of parameters further includes a one-to-one correspondence between the n gray levels of various primary colors and the n second brightnesses;

[0039] The determining the first data voltages of the primary colors to be adjusted corresponding to each preset gray level based on the second set of parameters and the first-frame brightness ratios of various primary colors includes:

[0040] Determine the first luminance L of the base color to be adjusted corresponding to the highest gray level according to the second set of parameters, the first-frame luminance ratios of various primary colors, and a preset luminance adjustment formula 1n-1 ; where the preset luminance adjustment formula is: L 1n-1 = L 2n-1 *(1 - T2 + T1), L 2n-1 is the second luminance of the base color to be adjusted corresponding to the highest gray level in the second set of parameters, T1 is the first-frame luminance ratio of the reference base color, and T2 is the first-frame luminance ratio of the base color to be adjusted;

[0041] Determine the first luminance L of the base color to be adjusted corresponding to the s-th gray level according to the one-to-one correspondence between the n gray levels of the base color to be adjusted and the n second luminances in the second set of parameters and a preset transmittance balance formula 1s ; where the preset transmittance balance formula is: xs% = (L 1s - L 10 ) / (L 1n-1 - L 10 ) = (L 2s - L 20 ) / (L 2n-1 - L 20 ), L 2s is the second luminance of the base color to be adjusted corresponding to the s-th gray level in the second set of parameters, L 10 is the first luminance of the base color to be adjusted corresponding to the 0-th gray level, L 20 is the second luminance of the base color to be adjusted corresponding to the 0-th gray level in the second set of parameters, L 10 = L 20 , xs% is the transmittance corresponding to the s-th gray level, 0 < s ≤ n - 1; and

[0042] Determine at least the first data voltage of the base color to be adjusted corresponding to the s-th gray level according to the first luminance L 1s of the base color to be adjusted corresponding to the s-th gray level and the second set of parameters

[0043] Optionally, a preset correspondence is stored in the driving circuit, and the preset correspondence includes the one-to-one correspondence between multiple data voltages and multiple gamma register values;

[0044] The determining at least the first data voltage of the base color to be adjusted corresponding to the s-th gray level according to the first luminance L 1s of the base color to be adjusted corresponding to the s-th gray level and the second set of parameters includes:

[0045] Based on the correspondence between the n second brightness values and the m second data voltages in the second set of parameters, and the one-to-one correspondence between the multiple data voltages and the multiple gamma register values in the preset correspondence, determine the first gamma register value G corresponding to the base color to be adjusted at the s gray level according to the preset interpolation formula 1s ; where the preset interpolation formula is:

[0046] G 1s = round(G y - [G y * (L y - L 1s ) / l y ), L y is the brightness value in the second set of parameters with the smallest difference from L 1s , G y is the gamma register value corresponding to L y , and round is the rounding function; and

[0047] Determine the data voltage corresponding to the first gamma register value G in the preset correspondence as the first data voltage corresponding to the base color to be adjusted at the s gray level 1s

[0048] Optionally, the display panel includes a fingerprint sensor, and the fingerprint sensor is used to detect the brightness of the display panel

[0049] The second aspect of the present application further provides a mobile terminal, which includes a display panel and a driving circuit, and the driving circuit is used to execute the steps in the display control method of the display panel described in the first aspect above

[0050] The third aspect of the present application further provides a computer-readable storage medium, in which a computer program is stored, and the computer program is used to be called by a processor to execute to implement the steps in the display control method of the display panel described in the first aspect above

[0051] The additional aspects and advantages of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present application Description of the Drawings

[0052] Figure 1 is the first flow chart of the display control method of the display panel provided by the embodiment of the present application

[0053] Figure 2 is the second flow chart of the display control method of the display panel provided by the embodiment of the present application

[0054] Figure 3 ​It is a partial data schematic diagram of the first set of parameters and the second set of parameters provided by the embodiments of the present application;

[0055] Figure 4 It is Figure 2 a refined flowchart of step S20 in

[0056] Figure 5 It is Figure 4 a refined flowchart of step S24 in

[0057] Figure 6 It is the third flowchart of the display control method of the display panel provided by the embodiments of the present application;

[0058] Figure 7 It is Figure 6 a refined flowchart of step S0 in

[0059] Figure 8 It is Figure 7 a refined flowchart of step S05 in

[0060] Figure 9 It is Figure 8 a refined flowchart of step S0513 in

[0061] Figure 10 It is Figure 9 a refined flowchart of step S05133 in

[0062] Figure 11 It is a schematic diagram of the calculation process of the first set of parameters provided by the embodiments of the present application.

[0063] The following specific embodiments will illustrate the present application in conjunction with the above-mentioned drawings. Specific Embodiments

[0064] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0065] In addition, the terms "first", "second", etc. in the specification of the present invention are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order different from those illustrated or described herein. In addition, the terms "comprising", "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily limit to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0066] It should be noted that, without conflict, the features in the embodiments of the present application can be combined with each other.

[0067] OLED (Organic Light-Emitting Diode), also known as organic electroluminescent display, organic light-emitting semiconductor (Organic Electro Luminescence Display, OLED). OLED belongs to a current-type organic light-emitting device, and is a phenomenon of luminescence caused by the injection and recombination of carriers, and the luminescence intensity is proportional to the injected current. Under the action of an electric field in the OLED, the holes generated by the anode and the electrons generated by the cathode will move, and are respectively injected into the hole transport layer and the electron transport layer, and migrate to the light-emitting layer. When the two meet in the light-emitting layer, energy excitons are generated, thereby exciting the luminescent molecules and finally generating visible light.

[0068] During the excitation process, the OLED light-emitting element can be equivalent to a transistor T and an equivalent capacitor C connected in parallel. Thus, when lighting the OLED light-emitting element, the equivalent capacitor C needs to be charged first. When the terminal voltage of the equivalent capacitor C is charged up to the turn-on voltage of the transistor T, the transistor T will conduct, and the OLED light-emitting element will emit light.

[0069] In the OLED display device, the pixel unit includes a red sub-pixel (R sub-pixel), a green sub-pixel (G sub-pixel) and a blue sub-pixel (B sub-pixel). Usually, the opening area of the G sub-pixel is larger than that of the R sub-pixel, and the turn-on voltages of the G sub-pixel and the R sub-pixel are the same. Therefore, the capacitance value of the equivalent capacitor of the G sub-pixel is larger than that of the equivalent capacitor of the R sub-pixel. In addition, the opening area of the B sub-pixel is larger than that of the G sub-pixel and the R sub-pixel, but the B sub-pixel has a high brightness sensitivity, and at the same low voltage, the response of the B sub-pixel is high. Therefore, the B sub-pixel will not cause a problem of brightness delay.

[0070] At a certain aperture ratio, the required charge amount of the R sub-pixel is the smallest. Therefore, the required charging time of the R sub-pixel is shorter. Moreover, the blue light turning-on sensitivity is high, so the required charging time of the B sub-pixel is also shorter. The required charging times of the R sub-pixel and the B sub-pixel are basically the same. It is found through experiments that when displaying the first frame of a picture, the R sub-pixel and the B sub-pixel light up first, and the G sub-pixel lights up last. It can be understood that the charging time of the G sub-pixel is the longest. And the charging time is related to the charging rate, and the larger the equivalent capacitance of the sub-pixel, the slower the charging. Therefore, it can be understood that the capacitance value of the equivalent capacitance of the G sub-pixel is the largest relative to the R sub-pixel and the B sub-pixel, and the charging time of the G sub-pixel is the longest. Since within one frame time, the charging time of the G sub-pixel (the charging time can be understood as the non-light-emitting time) is the longest, the brightness of the G sub-pixel is the lowest. That is to say, the excitation speed of the G sub-pixel is lower than that of the R sub-pixel and the B sub-pixel, so there will be a color deviation problem such as the picture being reddish, bluish or purplish. For example, in the first frame of the picture, the brightness of the R sub-pixel can only reach 40% of the target brightness (i.e., the first-frame brightness ratio is 40%), the brightness of the G sub-pixel can only reach 20% of the target brightness, and the brightness of the B sub-pixel can only reach 30% of the target brightness. At this time, the color difference △RGB of the first-frame brightness ratios of various primary colors is 20%. Since the brightness of the G sub-pixel is the highest in the first frame, the display screen will have a problem of the picture being reddish. When dragging the picture, there will be a problem of smear color deviation. And as the gray scale level decreases, the value of the color difference △RGB of the primary colors becomes larger, and the smear color deviation problem will become more and more serious.

[0071] Currently, in order to solve the above technical problems, the existing approach is usually to deliberately reduce the aperture ratio of the G sub-pixel when designing the screen body, thereby reducing the capacitance value of the equivalent capacitance of the G sub-pixel, and finally achieving the balance of the brightness difference of the first-frame sub-pixels of RGB individual sub-pixels. However, the method of reducing the aperture ratio of the G sub-pixel by changing the hardware design will bring several problems: 1. Since the G sub-pixel contributes nearly 60% to the brightness, after the aperture ratio of the G sub-pixel is reduced, the effective light source will be reduced by the corresponding proportion, and the overall brightness of the display screen will also decrease accordingly. 2. By changing the hardware design method, it is impossible to adjust in real time to achieve the best effect, and it is vulnerable to process fluctuations, resulting in uncontrollable actual improvement effects for different display screens.

[0072] In view of this, the present application provides a display control method for a display panel, which is applied to a driving circuit of a display panel. In the present application, the display panel can be an OLED display panel, and of course, it can also be other types of display panels.

[0073] The display panel includes sub-pixels of a primary colors, and at least some of the sub-pixels of the a primary colors have different excitation speeds under the same excitation conditions, where a > 1. Exemplarily, the sub-pixels of the a primary colors include R sub-pixels, G sub-pixels, and B sub-pixels or W (white) sub-pixels. Of course, it may also include sub-pixels of other primary colors.

[0074] Please refer to Figure 1 , Figure 1 which is the first flowchart of the display control method of the display panel provided by this application. The display control method includes the following steps:

[0075] Step S10: Obtain the image data of the picture to be displayed.

[0076] Step S20: Determine that there is smear color deviation in the display panel when displaying the picture to be displayed, at least based on the image data.

[0077] Step S30: When there is smear color deviation in the display panel when displaying the picture to be displayed, call the first set of parameters to drive the display panel to display at least one frame of the picture to be displayed.

[0078] Among them, the first set of parameters includes the correspondence between n gray levels of various primary colors and m first data voltages. And there is at least one preset gray level among the n gray levels. Under each preset gray level in the first set of parameters, the first data voltage of the primary color corresponding to the sub-pixel with a faster excitation speed is lower than the first data voltage of the primary color corresponding to the sub-pixel with a slower excitation speed, where n > 1 and m > 1.

[0079] For the display control method of the display panel provided by this application, when it is determined that there is smear color deviation in the display panel when displaying the picture to be displayed according to the image data, the first set of parameters is called to drive the display panel to display at least one frame of the picture to be displayed, which can provide a lower first data voltage for the sub-pixels with a faster excitation speed at least when displaying the first frame of the picture, so as to balance the lighting-up speeds of sub-pixels of different primary colors, and further improve the problem of smear color deviation.

[0080] In some embodiments, it may be n = m, that is, in the first set of parameters, each gray level of the same primary color corresponds to a first data voltage. In other embodiments, it may also be n > m, that is, in the first set of parameters, multiple gray levels of the same primary color may correspond to the same data voltage.

[0081] Please refer to Figure 2 , Figure 2 which is the second flowchart of the display control method of the display panel provided by this application. Figure 2Steps S31 to S32 are the refined processes of step S30. Specifically, the display control method includes the following steps:

[0082] Step S10, obtaining image data of the to-be-displayed screen.

[0083] Step S20, judging whether there is smear color deviation when the display panel displays the to-be-displayed screen at least according to the image data.

[0084] If it is determined that there is smear color deviation when the display panel displays the to-be-displayed screen, step S31 is executed; if it is determined that there is no smear color deviation when the display panel displays the to-be-displayed screen, step S40 is executed.

[0085] Step S31, calling the first set of parameters to drive the display panel to display the to-be-displayed screen.

[0086] Step S32, when the number of frames of driving the display panel to display the to-be-displayed screen by calling the first set of parameters is equal to the preset number of frames, calling the second set of parameters to continue driving the display panel to display the to-be-displayed screen.

[0087] Step S40, calling the second set of parameters to drive the display panel to display the to-be-displayed screen.

[0088] Wherein, the second set of parameters includes the corresponding relationship between n gray levels of various primary colors and m second data voltages, and the second data voltages of various primary colors under each gray level in the second set of parameters are equal.

[0089] In the embodiment of the present application, the first set of parameters is obtained by adjusting the second data voltages corresponding to some primary colors under the preset gray level in the second set of parameters to obtain the corresponding first data voltages on the basis of the second set of parameters. For details, please refer to the Figures 7 to 11 embodiment shown below.

[0090] Exemplarily, as Figure 3 shown, Figure 3Part of the data of the first set of parameters and the second set of parameters when the current brightness of the display panel is 2 nits is shown. Among them, the a primary colors include R, G, and B. The excitation speed of the G sub-pixel < the excitation speed of the R sub-pixel < the excitation speed of the B sub-pixel. The n gray levels include gray level 0 to gray level 255. The preset gray levels among the n gray levels are gray level 1 to gray level 255. Specifically, in the first set of parameters, at gray level 0, the G data voltage = the R data voltage = the B data voltage. At any gray level from gray level 1 to gray level 255, the G data voltage > the R data voltage > the B data voltage. In the second set of parameters, at any gray level from gray level 0 to gray level 255, the G data voltage = the R data voltage = the B data voltage. That is to say, in the embodiment of the present application, by adjusting the data voltages of some primary colors before the frame of the to-be-displayed image reaches a stable frame, the brightness difference ΔRGB of the primary colors is reduced, and the starting speeds of the sub-pixels of different primary colors tend to be balanced to solve the problem of smear and color cast. As Figure 3 shown, the first set of parameters is obtained by reducing the data voltages of R and B from gray level 1 to gray level 255 on the basis of the second set of parameters. Of course, in other embodiments, the first set of parameters may also be obtained by increasing the data voltages of R and G from gray level 1 to gray level 255 on the basis of the second set of parameters, or by increasing the data voltage of G from gray level 1 to gray level 255 and reducing the data voltage of B from gray level 1 to gray level 255.

[0091] It is not difficult to understand that since the second data voltages of various primary colors at each gray level in the second set of parameters are equal, when there is no smear and color cast when the display panel displays the to-be-displayed image, calling the second set of parameters to drive the display panel to display the to-be-displayed image can ensure the color ratio balance of various primary colors and enable the display panel to achieve the highest luminous efficiency.

[0092] It should be noted that as the number of display frames of the to-be-displayed image increases, the brightness of the sub-pixels of various primary colors will slowly rise to 100% of the target brightness. When the number of frames of the display panel displaying the to-be-displayed image is equal to the preset number of frames, it is considered that the display panel displaying the to-be-displayed image has reached a stable frame (that is, the frame of the display panel when the brightness of the to-be-displayed image no longer changes). Among them, the preset number of frames is determined according to the excitation speeds of the sub-pixels of various primary colors. For example, the preset number of frames is 10 frames. That is to say, at the 10th frame, the sub-pixels of various primary colors have all reached 100% of the target brightness.

[0093] As described above, in the embodiments of the present application, before the frame of the to-be-displayed picture reaches the stable frame, the first set of parameters is called to drive the display panel to display the to-be-displayed picture, that is, by adjusting the data voltages of some primary colors, the lighting-up speeds of the sub-pixels of different primary colors are made to tend to be balanced to solve the problem of smear and color cast. Then, after the picture reaches the stable frame, if the first set of parameters is still called to drive the display panel to display the to-be-displayed picture, it will inevitably cause problems such as color cast in the stable frame, too high or too low overall picture brightness due to unbalanced color ratios of various primary colors when the display panel displays the stable frame. For example, after the picture reaches the stable frame, if the first set of parameters shown in Figure 3 is called to drive the display panel to display the picture, then, in the stable frame, the color ratios of R and B will be low, resulting in the overall picture being greenish and the brightness being dim. In this embodiment, when the display panel has reached the stable frame while displaying the to-be-displayed picture, the second set of parameters is called to continue driving the display panel to display the to-be-displayed picture, which can avoid problems such as color cast, too high or too low brightness when the display panel displays the stable frame.

[0094] Please refer to Figure 4 , Figure 4 is a detailed flowchart of step S20. In some embodiments, step S20 includes steps S21 to S24:

[0095] Step S21, determining the target gray level of each sub-pixel according to the image data.

[0096] Step S22, obtaining the current brightness value of the display panel.

[0097] Step S23, determining whether the to-be-displayed picture is a sliding picture.

[0098] Step S24, judging whether there is smear and color cast when the display panel displays the to-be-displayed picture according to the target gray level of each sub-pixel, the current brightness value of the display panel, and the judgment result of whether the to-be-displayed picture is a sliding picture.

[0099] Among them, the current brightness value of the display panel can be obtained by the operator manually setting the brightness level, or can be obtained by the display panel adaptively adjusting according to the ambient brightness. Specifically, it can be obtained by reading the 0x51 register of the driver chip (Display Driver IC, DDIC) in the driving circuit.

[0100] Exemplarily, when the operator drags the screen, or when the to-be-displayed picture is a dynamic wallpaper, it can be determined that the to-be-displayed picture is a sliding picture. Among them, the operation actions of the operator on the display panel may include clicking on the screen, dragging the screen, and so on. Exemplarily, it can be determined whether the operator has a sliding operation by the speed and displacement size of the change of touch coordinates.

[0101] It should be noted that the embodiments of the present application do not limit the execution order of steps S21 to S23. It may be that step S21 is executed first, then step S22, and finally step S23. It may also be that steps S21 to S23 are executed simultaneously, or it may be other execution orders.

[0102] Please refer to Figure 5 , Figure 5 is a detailed flowchart of step S24. In some embodiments, step S24 includes steps S241 to S242:

[0103] S241, calculate the average value of the target gray levels of each sub-pixel according to the target gray levels of each sub-pixel.

[0104] S242, determine whether the average value of the target gray levels is lower than a preset low gray level threshold, whether the current brightness value is lower than a preset low brightness threshold, and whether the to-be-displayed picture is a sliding picture.

[0105] If the average value of the target gray levels is lower than the preset low gray level threshold, the current brightness value is lower than the preset low brightness threshold, and the to-be-displayed picture is a sliding picture, it is determined that there is smear color deviation when the display panel displays the to-be-displayed picture, and step S31 is executed. If the average value of the target gray levels is higher than the preset low gray level threshold, and / or, the current brightness value is higher than the preset low brightness threshold, and / or, the to-be-displayed picture is not a sliding picture, it is determined that there is no smear color deviation when the display panel displays the to-be-displayed picture, and step S40 is executed.

[0106] It should be noted that through experiments, it is found that color deviation problems are not likely to occur in high-brightness pictures or high-gray-level pictures. When the to-be-displayed picture is not a sliding picture, color deviation problems are not likely to occur either. That is to say, the display panel is likely to have serious smear color deviation problems only when displaying low-gray-level, low-brightness sliding pictures (or switching effects during page switching). Therefore, in the embodiments of the present application, only when the average value of the target gray levels is lower than the preset low gray level threshold, the current brightness value is lower than the preset low brightness threshold, and the to-be-displayed picture is a sliding picture, it is determined that there is smear color deviation when the display panel displays the to-be-displayed picture, which can make the display panel achieve the highest luminous efficiency as much as possible.

[0107] Among them, the preset gray scale threshold and the preset low brightness threshold are determined accordingly according to the light-emitting characteristics of the display panel. Exemplarily, the preset gray scale threshold is 32 gray scales, and the preset low gray scale threshold is 10 nits.

[0108] In other embodiments, when any one of the conditions of a low gray scale screen, a low brightness screen, and a sliding screen is satisfied, that is, when the average value of the target gray scale is lower than the preset low gray scale threshold, and / or, when the current brightness value is lower than the preset low brightness threshold, and / or, when the screen to be displayed is a sliding screen, it is determined that there is smear color deviation when the display panel displays the screen to be displayed.

[0109] In other embodiments, it is also possible to determine a low gray scale screen according to other gray scale statistical values. For example, the median and mode of the target gray scale of each sub-pixel are compared with the preset low gray scale threshold to determine whether the screen to be displayed is a low gray scale screen.

[0110] Please refer to Figure 6 , Figure 6 which is the third flowchart of the display control method of the display panel provided by this application. The display control method includes the following steps:

[0111] Step S0, by comparing the first-frame brightness and the stable-frame brightness when the display panel displays the highest gray scale pure color screens of various primary colors respectively, adjust the second data voltage of at least one primary color corresponding to each preset gray scale in the second set of parameters to obtain the corresponding first data voltage, so as to obtain the first set of parameters.

[0112] Among them, the stable frame is the frame in which the brightness of the display panel no longer changes during the process of displaying a pure color screen of a primary color.

[0113] Step S10, obtain the image data of the screen to be displayed.

[0114] Step S20, at least based on the image data, determine whether there is smear color deviation when the display panel displays the screen to be displayed.

[0115] If it is determined that there is smear color deviation when the display panel displays the screen to be displayed, then execute step S31; if it is determined that there is no smear color deviation when the display panel displays the screen to be displayed, then execute step S40.

[0116] Step S31, call the first set of parameters to drive the display panel to display the screen to be displayed.

[0117] Step S32, when the number of frames for driving the display panel to display the screen to be displayed by calling the first set of parameters is equal to the preset number of frames, call the second set of parameters to continue driving the display panel to display the screen to be displayed.

[0118] Step S40: Call the second set of parameters to drive the display panel to display the to-be-displayed picture.

[0119] Please refer to Figure 7 , Figure 7 which is a detailed flowchart of step S0. In some embodiments, step S0 includes steps S01 to S05:

[0120] Step S01: Drive the display panel to display the highest gray-scale pure-color pictures of various primary colors respectively.

[0121] Step S02: Detect the first-frame brightness of the display panel when it displays the highest gray-scale pure-color pictures of various primary colors respectively.

[0122] Step S03: Detect the stable-frame brightness of the display panel when it displays the highest gray-scale pure-color pictures of various primary colors respectively.

[0123] Step S04: Calculate the first-frame brightness ratios of various primary colors.

[0124] Step S05: Compare the first-frame brightness ratios of various primary colors, and adjust the second data voltages of at least one primary color corresponding to each preset gray scale in the second set of parameters according to the comparison results to obtain the corresponding first data voltages, thereby obtaining the first set of parameters.

[0125] Wherein, the first-frame brightness ratio of each primary color is the ratio of the first-frame brightness of the primary color to the stable-frame brightness.

[0126] In the embodiments of the present application, the display panel includes a fingerprint sensor, and the fingerprint sensor is used to detect the brightness of the display panel. Of course, in other embodiments, the first-frame brightness and stable-frame brightness of the display panel when it displays the highest gray-scale pure-color pictures of various primary colors can also be detected by other image sensors capable of detecting the screen brightness.

[0127] Exemplarily, driving the display panel to display the highest gray-scale pure-color pictures of various primary colors respectively includes driving the display panel to display a 255-gray-scale R picture, a 255-gray-scale G picture, and a 255-gray-scale B picture. For example, assuming that when displaying a 255-gray-scale R picture, the brightnesses of the 1st to 7th frames of pictures detected by the fingerprint sensor are 60nits, 70nits, 90nits, 110nits, 130nits, 150nits, and 150nits respectively, then the first-frame brightness of R is 60nits, the 6th frame and subsequent picture frames are all stable frames, and the stable-frame brightness is 150nits, so the first-frame brightness ratio of R is 40%.

[0128] In some embodiments, step S05 specifically includes:

[0129] Step S051: Taking one of the a primary colors as a reference primary color, reducing the second data voltage corresponding to the primary color with a first-frame brightness ratio higher than the reference primary color at each preset gray level to obtain the corresponding first data voltage, and increasing the second data voltage corresponding to the primary color with a first-frame brightness ratio lower than the reference primary color at each preset gray level to obtain the corresponding first data voltage, thereby obtaining the first set of parameters.

[0130] Please refer to Figure 8 , Figure 8 which is a detailed flowchart of step S051. In some embodiments, step S051 includes steps S0511 to S0513:

[0131] Step S0511: Determining the primary color with the lowest first-frame brightness ratio as the reference primary color.

[0132] Step S0512: Determining the second data voltage corresponding to the reference primary color at each gray level in the second set of parameters, and the second data voltage corresponding to all primary colors at each non-preset gray level in the second set of parameters as the corresponding first data voltage.

[0133] Among them, the non-preset gray levels are the gray levels in the n gray levels other than the preset gray levels. For example, Figure 3 and Figure 11 in, the preset gray levels are from gray level 1 to gray level 255, the non-preset gray level is gray level 0, and the first data voltage and the second data voltage corresponding to R, G, and B at gray level 0 are equal.

[0134] Step S0513: Based on the second set of parameters and the first-frame brightness ratio of each primary color, determining the first data voltage corresponding to the primary color to be adjusted at each preset gray level, thereby obtaining the first set of parameters.

[0135] Among them, the primary color to be adjusted is the primary color with a first-frame brightness ratio different from the reference primary color.

[0136] It should be noted that in the embodiments of the present application, the primary color with the lowest first-frame brightness ratio is determined as the reference primary color (for example, G). Based on the second set of parameters, the second data voltages of other primary colors (for example, R, B) in the second set of parameters corresponding to each preset gray level are reduced to obtain the corresponding first data voltages, which can ensure that the first voltage data does not exceed the allowable range due to being too high. Of course, in other embodiments, other primary colors can also be determined as the reference primary color. For example, the primary color with the highest first-frame brightness ratio is determined as the reference primary color (for example, B). Based on the second set of parameters, the second data voltages of other primary colors (for example, R, G) in the second set of parameters corresponding to each preset gray level are increased to obtain the corresponding first data voltages, thereby obtaining the first set of parameters.

[0137] In some embodiments, the second set of parameters further includes a one-to-one correspondence between n gray levels of various primary colors and n second brightness levels.

[0138] Please refer to Figure 9 , Figure 9 which is a detailed flowchart of step S0513. In some embodiments, step S0513 includes steps S05131 to S05133:

[0139] Step S05131, determine the first brightness L of the primary color to be adjusted corresponding to the highest gray level according to the second set of parameters, the first-frame brightness ratio of various primary colors, and a preset brightness adjustment formula. 1n-1 .

[0140] Among them, the preset brightness adjustment formula is: L 1n-1 = L 2n-1 * (1 - T2 + T1), where L 2n-1 is the second brightness of the primary color to be adjusted corresponding to the highest gray level in the second set of parameters, T1 is the first-frame brightness ratio of the reference primary color, and T2 is the first-frame brightness ratio of the primary color to be adjusted.

[0141] Step S05132, determine the first brightness L of the primary color to be adjusted corresponding to the s gray level according to the one-to-one correspondence between the n gray levels and n second brightness levels of the primary color to be adjusted in the second set of parameters and a preset transmittance balance formula. 1s .

[0142] Among them, the preset transmittance balance formula is: xs% = (L 1s - L 10 ) / (L 1n-1 - L 10 ) = (L 2s - L 20 ) / (L 2n-1 - L 20 ), where L 2sIs the second brightness corresponding to the base color to be adjusted in the s gray level in the second set of parameters, L 10 Is the first brightness corresponding to the base color to be adjusted in the 0 gray level, L 20 Is the second brightness corresponding to the base color to be adjusted in the 0 gray level in the second set of parameters, L 10 = L 20 = 0, xs% is the transmittance corresponding to the s gray level, 0 < s ≤ n - 1.

[0143] Step S05133, determine the first data voltage corresponding to the base color to be adjusted in the s gray level at least according to the first brightness L 1s of the base color to be adjusted in the s gray level and the second set of parameters.

[0144] Among them, determining the first brightness L 1s corresponding to the base color to be adjusted in the s gray level according to the preset transmittance balance formula can ensure that the transmittance of the first set of parameters is equal to the transmittance of the second set of parameters at any gray level, so as to ensure that both the first set of parameters and the second set of parameters can satisfy the gamma curve with a preset gamma value (such as 2.2).

[0145] Furthermore, a preset correspondence is stored in the driving circuit, and the preset correspondence includes a one-to-one correspondence between a plurality of data voltages and a plurality of gamma register values. For example, it includes a one-to-one correspondence between gamma register values 0 to gamma register value 65535 and 65536 data voltages. For example Figure 11 as shown, gamma register value 0 corresponds to data voltage 3.010, and gamma register value 65535 corresponds to data voltage 6.2.

[0146] Please refer to Figure 10 , Figure 10 is a detailed flowchart of step S05133. In some embodiments, step S05133 includes steps S051331 to S051332:

[0147] S051331, based on the correspondence between the n second brightnesses and the m second data voltages in the second set of parameters, and the one-to-one correspondence between the plurality of data voltages and the plurality of gamma register values in the preset correspondence, determine the first gamma register value G 1s corresponding to the base color to be adjusted in the s gray level according to the preset interpolation formula.

[0148] Among them, the preset interpolation formula is: G 1s = round(G y -[G y *(L y -L 1s ) / l y ), Ly is the luminance value with the smallest difference from L in the second set of parameters, G 1s is the gamma register value corresponding to L y is L y , and round is the rounding function.

[0149] S051332, determine the data voltage corresponding to the first gamma register value G in the preset correspondence as the first data voltage of the base color to be adjusted corresponding to the s gray level. 1s

[0150] Exemplarily, as Figure 11 shown, assume that the second luminance L corresponding to R at the highest gray level 2n-1 = L 2255 = 150 nits, the second luminance L corresponding to R at 254 gray levels 2254 = 148.709 nits, the first frame luminance ratio of R is 40%, the first frame luminance ratio of G is 20%, and the first frame luminance ratio of B is 30%. Then G is the reference base color, and R and B are the base colors to be adjusted. Then, according to the preset luminance adjustment formula, the first luminance L corresponding to R at the highest gray level can be obtained 1n-1 = L 1255 = 150*(1 - 40% + 20%) = 120 nits. Thus, according to the preset transmittance balance formula xs% = (L 1s - L 20 ) / (L 1n-1 - L 20 ) == (L 2s - L 20 ) / (L 2n-1 - L 20 ), the first luminance L corresponding to R at 1 gray level to 254 gray levels can be calculated 11 ~ L 1254 , for example:

[0151] L 1254 = xs%*(L 1n-1 - L 20 ) + L 20 = 120*148.709 / 150 = 118.967.

[0152] At this time, based on the correspondence between the n second luminances and the m second data voltages in the second set of parameters, and the one-to-one correspondence between the multiple data voltages and the multiple gamma register values in the preset correspondence, the first gamma register value G corresponding to R at the s gray level can be determined according to the preset interpolation formula 1s , for example, when s = 255, L 1255 ​= 120 nits. From the second set of parameters, the luminance value with the smallest difference from 120 nits is found to be L 2231 = 120.684 nits, and the corresponding second gamma register value G 2231 = 59420. Thus, according to the preset interpolation formula, the first gamma register value G corresponding to R at 255 gray levels can be obtained 1255 :

[0153] G 1255 = round(G 2231 - [G 2231 * (L 2231 - L 1255 ) / l 2231 ) = round(59420 - [59420 * (120.684 - 120) / 120.684]) =

[0154] 59083. Finally, in the preset correspondence, the first data voltage corresponding to G 1255 = 59083 can be found. It is not difficult to understand that through the above steps S051331 to S051332, the first data voltages corresponding to R at 1 to 254 gray levels and the first data voltages corresponding to B at 1 to 255 gray levels can be obtained, thereby obtaining the first set of parameters as shown in Figure 3 shown

[0155] It should be noted that in the second set of parameters, there is only the correspondence between n gray levels of each primary color, n second luminances, and m second gamma register values. Therefore, the first luminance L corresponding to the s gray level of the primary color to be adjusted may not be found by querying the second set of parameters 1s The corresponding first gamma register value G 1s . This application uses the preset interpolation formula to accurately determine the first gamma register value G corresponding to the first luminance L 1s , so that the first set of parameters can fit the gamma curve with a preset gamma value (such as 2.2) as much as possible 1s .

[0156] Based on the same inventive concept, this application also provides a mobile terminal, which includes a display panel and a driving circuit, and the driving circuit is used to execute the steps in the display control method of the display panel described in any of the above embodiments

[0157] Based on the same inventive concept, this application also provides a computer-readable storage medium, in which a computer program is stored, and the computer program is used to be called by a processor and executed to implement the steps in the display control method of the display panel described in any of the above embodiments

[0158] The computer storage medium of the embodiments of the present application may adopt any combination of one or more computer-readable media. The computer-readable media may be computer-readable signal media or computer-readable storage media. The computer-readable storage media may, for example, but not be limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or components, or any combination of the above. More specific examples (non-exhaustive list) of the computer-readable storage media include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this document, the computer-readable storage media may be any tangible medium that contains or stores a program, and the program may be used by or in combination with an instruction execution system, device, or component.

[0159] The computer-readable signal media may include data signals propagated in a baseband or as part of a carrier wave, which carry computer-readable program codes. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. The computer-readable signal media may also be any computer-readable media other than the computer-readable storage media, and the computer-readable media may send, propagate, or transmit a program for use by or in combination with an instruction execution system, device, or component.

[0160] The program codes contained on the computer-readable media may be transmitted by any appropriate media, including but not limited to wireless, wire, optical cable, RF, etc., or any suitable combination of the above.

[0161] The computer program codes for performing the operations of the present invention may be written in one or more programming languages or combinations thereof. The programming languages include object-oriented programming languages such as Java, Smalltalk, C++, and also include conventional procedural programming languages such as C language or similar programming languages. The program codes may be executed entirely on the user's computer, partially on the user's computer, executed as an independent software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (for example, by using an Internet service provider to connect through the Internet).

[0162] Although embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A display control method for a display panel, applied to a driving circuit of a display panel. The display panel includes sub-pixels of a primary colors, and at least some of the sub-pixels of the primary colors have different excitation speeds under the same excitation conditions. a > 1. The method is characterized in that, The display control method includes: Obtaining image data of a to-be-displayed screen; Determining that there is smear color deviation when the display panel displays the to-be-displayed screen at least according to the image data; and When there is smear color deviation when the display panel displays the to-be-displayed screen, calling a first set of parameters to drive the display panel to display at least one frame of the to-be-displayed screen, where the first set of parameters includes the correspondence between n gray levels of various primary colors and m first data voltages, and there is at least one preset gray level among the n gray levels. At each of the preset gray levels in the first set of parameters, the first data voltage of the primary color corresponding to the sub-pixel with a faster excitation speed is lower than the first data voltage of the primary color corresponding to the sub-pixel with a slower excitation speed, n>1, m>1.

2. The display control method of the display panel according to claim 1, wherein, The step of calling the first set of parameters to drive the display panel to display at least one frame of the to-be-displayed screen includes: Calling the first set of parameters to drive the display panel to display the to-be-displayed screen; and When the number of frames of driving the display panel to display the to-be-displayed screen by calling the first set of parameters is equal to a preset number of frames, calling a second set of parameters to continue driving the display panel to display the to-be-displayed screen; where the second set of parameters includes the correspondence between n gray levels of various primary colors and m second data voltages, and the second data voltages of various primary colors are equal at each gray level in the second set of parameters.

3. The display control method of the display panel according to claim 1, wherein, The display control method further includes: When there is no smear color deviation when the display panel displays the to-be-displayed screen, calling the second set of parameters to drive the display panel to display the to-be-displayed screen; where the second set of parameters includes the correspondence between n gray levels of various primary colors and m second data voltages, and the second data voltages of various primary colors are equal at each gray level in the second set of parameters.

4. The display control method of the display panel according to any one of claims 1-3, characterized in that The step of determining that there is smear color deviation when the display panel displays the to-be-displayed screen at least according to the image data includes: Determining the target gray level of each sub-pixel according to the image data; Obtaining the current brightness value of the display panel; Judging whether the to-be-displayed screen is a sliding screen; and Determining that there is smear color deviation when the display panel displays the to-be-displayed screen according to the target gray level of each sub-pixel, the current brightness value of the display panel, and the judgment result of whether the to-be-displayed screen is a sliding screen.

5. The display control method of the display panel according to claim 4, characterized in that, The step of determining that there is smear color deviation when the display panel displays the to-be-displayed screen according to the target gray level of each sub-pixel, the current brightness value of the display panel, and the judgment result of whether the to-be-displayed screen is a sliding screen includes: Calculating the average value of the target gray levels of each sub-pixel according to the target gray level of each sub-pixel; and When the average value of the target gray levels is lower than a preset low gray level threshold, the current brightness value is lower than a preset low brightness threshold, and the to-be-displayed screen is a sliding screen, determining that there is smear color deviation when the display panel displays the to-be-displayed screen; The display control method further includes: When the average target gray level is higher than a preset low gray level threshold, and / or the current brightness value is higher than a preset low brightness threshold, and / or the to-be-displayed picture is not a sliding picture, it is determined that there is no smear color deviation when the display panel displays the to-be-displayed picture.

6. The display control method of the display panel according to claim 2 or 3, characterized in that, Before acquiring the image data of the to-be-displayed picture, the display control method further includes: By comparing the first-frame brightness and the stable-frame brightness of the display panel when respectively displaying the highest gray level pure color pictures of various primary colors, adjusting the second data voltages of at least one primary color corresponding to each preset gray level in the second set of parameters to obtain corresponding first data voltages, so as to obtain the first set of parameters.

7. The display control method of the display panel according to claim 6, characterized in that, The step of comparing the first-frame brightness and the stable-frame brightness of the display panel when respectively displaying the highest gray level pure color pictures of various primary colors, adjusting the second data voltages of at least one primary color corresponding to each preset gray level in the second set of parameters to obtain corresponding first data voltages, so as to obtain the first set of parameters includes: Driving the display panel to respectively display the highest gray level pure color pictures of various primary colors; Detecting the first-frame brightness of the display panel when respectively displaying the highest gray level pure color pictures of various primary colors; Detecting the stable-frame brightness of the display panel when respectively displaying the highest gray level pure color pictures of various primary colors; Calculating the first-frame brightness ratios of various primary colors; wherein, the first-frame brightness ratio of each primary color is the ratio of the first-frame brightness of the primary color to the stable-frame brightness; and Comparing the first-frame brightness ratios of various primary colors, and adjusting the second data voltages of at least one primary color corresponding to each preset gray level in the second set of parameters according to the comparison result to obtain corresponding first data voltages, so as to obtain the first set of parameters.

8. The display control method of the display panel according to claim 7, characterized in that, The step of comparing the first-frame brightness ratios of various primary colors, and adjusting the second data voltages of at least one primary color corresponding to each preset gray level in the second set of parameters according to the comparison result to obtain corresponding first data voltages, so as to obtain the first set of parameters includes: Taking one of the a primary colors as a reference primary color, reducing the second data voltages of the primary colors with first-frame brightness ratios higher than the reference primary color corresponding to each preset gray level in the second set of parameters to obtain corresponding first data voltages, and increasing the second data voltages of the primary colors with first-frame brightness ratios lower than the reference primary color corresponding to each preset gray level in the second set of parameters to obtain corresponding first data voltages, so as to obtain the first set of parameters.

9. The display control method of the display panel according to claim 8, wherein The step of taking one of the a primary colors as a reference primary color, reducing the second data voltages of the primary colors with first-frame brightness ratios higher than the reference primary color corresponding to each preset gray level in the second set of parameters to obtain corresponding first data voltages, and increasing the second data voltages of the primary colors with first-frame brightness ratios lower than the reference primary color corresponding to each preset gray level in the second set of parameters to obtain corresponding first data voltages, so as to obtain the first set of parameters includes: Determining the primary color with the lowest first-frame brightness ratio as the reference primary color; Determine the second data voltage corresponding to the reference primary color at each gray level in the second set of parameters, and the second data voltage corresponding to all primary colors in the second set of parameters at each non - preset gray level as the corresponding first data voltage; wherein, the non - preset gray level is the gray level other than the preset gray level among the n gray levels; and Based on the second set of parameters and the first - frame brightness ratios of various primary colors, determine the first data voltage corresponding to the to - be - adjusted primary color at each preset gray level, so as to obtain the first set of parameters; wherein, the to - be - adjusted primary color is the primary color with a different first - frame brightness ratio from the reference primary color.

10. The display control method of the display panel according to claim 9, characterized in that, The second set of parameters further includes a one - to - one correspondence between the n gray levels of various primary colors and n second brightnesses; The determining, based on the second set of parameters and the first - frame brightness ratios of various primary colors, the first data voltage corresponding to the to - be - adjusted primary color at each preset gray level includes: Determine the first luminance L of the base color to be adjusted corresponding to the highest gray level according to the second set of parameters, the first-frame luminance ratios of various primary colors, and a preset luminance adjustment formula 1n-1 ; wherein, the preset luminance adjustment formula is: L 1n-1 = L 2n-1 *(1 - T2 + T1), where L 2n-1 is the second luminance of the base color to be adjusted corresponding to the highest gray level in the second set of parameters, T1 is the first-frame luminance ratio of the reference base color, and T2 is the first-frame luminance ratio of the base color to be adjusted; Determine the first brightness L corresponding to the s gray level of the base color to be adjusted according to the one-to-one correspondence between the n gray levels of the base color to be adjusted in the second set of parameters and the n second brightnesses, and the preset penetration rate balance formula 1s ; where the preset penetration rate balance formula is: xs% = (L 1s - L 10 ) / (L 1n-1 - L 10 ) = (L 2s - L 20 ) / (L 2n-1 - L 20 ), L 2s is the second brightness corresponding to the s gray level of the base color to be adjusted in the second set of parameters, L 10 is the first brightness corresponding to the 0 gray level of the base color to be adjusted, L 20 is the second brightness corresponding to the 0 gray level of the base color to be adjusted in the second set of parameters, L 10 = L 20 , xs% is the penetration rate corresponding to the s gray level, 0 < s ≤ n - 1; and Determine a first luminance L corresponding to the s gray level according to at least the base color to be adjusted 1s and the second set of parameters, and determine a first data voltage corresponding to the s gray level of the base color to be adjusted.

11. The display control method of the display panel according to claim 10, characterized in that, A preset correspondence is stored in the driving circuit, and the preset correspondence includes a one - to - one correspondence between multiple data voltages and multiple gamma register values; The at least first luminance L corresponding to the s gray level according to the base color to be adjusted 1s and the second set of parameters to determine a first data voltage corresponding to the s gray level of the base color to be adjusted, including: Based on the corresponding relationship between the n second brightness levels and the m second data voltages in the second set of parameters, and the one-to-one corresponding relationship between the multiple data voltages and the multiple gamma register values in the preset corresponding relationship, determine the first gamma register value G corresponding to the base color to be adjusted at the s gray level according to the preset interpolation formula 1s ; where the preset interpolation formula is: G 1s = round(G y - [G y * (L y - L 1s ) / l y ),L y is the brightness value in the second set of parameters with the smallest difference from L 1s , G y is the gamma register value corresponding to L y , round is the rounding function; and Determine the data voltage corresponding to the first gamma register value G in the preset correspondence relationship 1s as the first data voltage of the base color to be adjusted corresponding to the s gray level.

12. The display control method of the display panel according to claim 7, characterized in that, The display panel includes a fingerprint sensor, and the fingerprint sensor is used to detect the brightness of the display panel.

13. A mobile terminal, characterized in that, It includes a display panel and a driving circuit, and the driving circuit is used to execute the steps in the display control method of the display panel according to any one of claims 1 - 12.

14. A computer-readable storage medium, characterized in that, A computer program is stored in the computer - readable storage medium, and the computer program is used to be called by a processor for execution to implement the steps in the display control method of the display panel according to any one of claims 1 - 12.

Images