Control Method, Device and Display Device of a Display Panel

Abstract

The present application discloses a control method, device and display device for a display panel. The method includes: determining the image complexity of the to-be-displayed picture and determining whether the to-be-displayed picture is a still picture; when the image complexity meets the preset configuration information and the to-be-displayed picture is a still picture, determining the driving voltage of any pixel point in the to-be-displayed picture as a first voltage value, the first voltage value being set between a second voltage value and a third voltage value, the second voltage value being the driving voltage of any pixel point in the initial overdrive mode, and the third voltage value being the driving voltage corresponding to the gray scale of any pixel point, effectively improving the flicker problem caused by the misjudgment of the OD algorithm due to the processing of complex still images by the FRC algorithm.

Description

Technical Field

[0001] This application relates to the field of display technologies, and in particular, to a control method, device, and display device for a display panel. Background Art

[0002] In order to improve the display effect of existing liquid crystal display devices, the Frame Rate Control (FRC) technology is often adopted. The FRC technology can represent high-bit data as an arrangement of low-bit data in space or time. It mainly utilizes the visual inertia of the human eye, that is, the brightness perception of the human eye does not disappear immediately with the disappearance of the object brightness, to achieve brightness fusion. For time compensation, the gray levels are segmented more finely to make the displayed image more delicate.

[0003] In addition, in order to make the display have a better picture output effect and at the same time reduce some instantaneous colors or phenomena seen by the human eye during the picture conversion process, the "Over-Drive"

[0004] (Over-Drive), also known as "Response Time Compensation", is often used in the control chip of the display to force the panel driving voltage to increase or decrease, so as to speed up the response speed and shorten the response time to achieve an ideal output effect.

[0005] Due to the characteristics of the FRC algorithm, the OD algorithm will misjudge a static picture as a dynamic picture, and then trigger the OD algorithm (compression → decompression), resulting in image distortion and flickering problems for static pictures with higher complexity. Summary of the Invention

[0006] Embodiments of this application provide a control method, device, and display device for a display panel. When a complex static image is recognized, the driving voltage value of the pixel points is reduced during the OD algorithm analysis, effectively improving the flickering problem caused by the misjudgment of the OD algorithm due to the processing of the complex static image by the FRC algorithm.

[0007] In a first aspect, embodiments of this application provide a control method for a display panel, including:

[0008] Obtain the pixel feature values of each pixel point in adjacent frame display pictures;

[0009] Determine the image complexity of the to-be-displayed picture and determine whether the to-be-displayed picture is a static picture according to the pixel feature values;

[0010] When the image complexity conforms to the preset configuration information and the to-be-displayed picture is a static picture, determine that the driving voltage of any pixel in the to-be-displayed picture is a first voltage value, where the first voltage value is set between a second voltage value and a third voltage value, the second voltage value is the driving voltage of any pixel in the initial overdrive mode, and the third voltage value is the driving voltage corresponding to the gray level of any pixel;

[0011] Drive the display panel to display the to-be-displayed picture according to the first voltage value corresponding to each pixel.

[0012] In some embodiments, the pixel feature value includes a first feature value of each pixel in the to-be-displayed picture. Determining the image complexity of the to-be-displayed picture according to the pixel feature value includes:

[0013] Divide the to-be-displayed picture into a plurality of pixel regions, and each pixel region includes a preset number of pixels;

[0014] Determine a first pixel value of each pixel region according to the first feature value;

[0015] Determine a first pixel difference between adjacent pixel regions according to the first pixel value of each pixel region;

[0016] Determine the image complexity of the to-be-displayed picture according to each first pixel difference;

[0017] After determining the image complexity of the to-be-displayed picture and determining whether the to-be-displayed picture is a static picture according to the pixel feature value, further include:

[0018] If at least a first number of the first pixel differences exceed a first threshold, determine that the image complexity conforms to the preset configuration information.

[0019] In some embodiments, the pixel feature value includes a second feature value of each pixel in the current display picture. Determining whether the to-be-displayed picture is a static picture according to the pixel feature value further includes:

[0020] Determine a picture difference degree between the to-be-displayed picture and the current display picture according to the first feature value and the second feature value;

[0021] Determine whether the to-be-displayed picture is a static picture according to the picture difference degree.

[0022] In some embodiments, determining the picture difference degree between the to-be-displayed picture and the current display picture according to the first feature value and the second feature value includes:

[0023] Determine a second pixel value of each pixel region according to the second feature value;

[0024] Determine the second pixel difference of each of the pixel regions according to the first pixel value and the second pixel value;

[0025] Determine the degree of difference between the to-be-displayed image and the current displayed image according to each of the second pixel differences.

[0026] In some embodiments, after determining the image complexity of the to-be-displayed image and determining whether the to-be-displayed image is a still image according to the pixel feature value, the method further includes:

[0027] If the number of the second pixel differences that do not exceed a second quantity exceeds a second threshold, determine that the to-be-displayed image is a still image.

[0028] In some embodiments, the to-be-displayed image includes a pixel change complex region and a pixel change flat region. When the image complexity conforms to preset configuration information and the to-be-displayed image is a still image, determining the driving voltage of any pixel point in the to-be-displayed image as a first voltage value includes:

[0029] When the image complexity conforms to preset configuration information and the to-be-displayed image is a still image, determine the pixel change complex region and the pixel change flat region according to the first feature value;

[0030] Determine the driving voltage of any pixel point in the pixel change complex region as the first voltage value;

[0031] Determine the driving voltage of any pixel point in the pixel change flat region as the third voltage value.

[0032] In some embodiments, when the image complexity conforms to preset configuration information and the to-be-displayed image is a still image, determining the pixel change complex region and the pixel change flat region according to the first feature value includes:

[0033] When the image complexity conforms to preset configuration information and the to-be-displayed image is a still image, determine adjacent pixel regions with the first pixel difference exceeding a third threshold as target pixel groups;

[0034] If at least a third quantity of consecutive adjacent pixel regions are the target pixel groups, determine that the consecutive adjacent pixel regions are determined as the pixel change complex region, and the remaining regions are the pixel change flat regions.

[0035] In some embodiments, determining the driving voltage of any pixel point in the pixel change complex region as the first voltage value includes:

[0036] Obtain the target pixel difference of adjacent pixel regions in the pixel change complex region;

[0037] Determine the first voltage value according to the target pixel difference and a preset corresponding relationship, where the corresponding relationship is the corresponding relationship between the pixel difference and the driving voltage value

[0038] In a second aspect, the present application provides a control device for a display panel, including:

[0039] An information acquisition module, configured to acquire pixel feature values of each pixel point in a to-be-displayed picture;

[0040] An information analysis module, communicatively connected to the information acquisition module, configured to determine the image complexity of the to-be-displayed picture and determine whether the to-be-displayed picture is a still picture according to the pixel feature values;

[0041] A pixel driving module, communicatively connected to the information analysis module, configured to, when the image complexity meets preset configuration information and the to-be-displayed picture is a still picture, determine the driving voltage of any pixel point in the to-be-displayed picture as a first voltage value, where the first voltage value is set between a second voltage value and a third voltage value, the second voltage value is the driving voltage of any pixel point in an initial overdrive mode, and the third voltage value is the driving voltage corresponding to the gray level of any pixel point;

[0042] A picture display module, communicatively connected to the pixel driving module, configured to drive the display panel to display the to-be-displayed picture according to the first voltage value corresponding to each pixel point.

[0043] In a third aspect, the present application provides a display device, where the display device applies the control method of the display panel described in any one of the above.

[0044] The control method, device, and display device of the display panel provided by the embodiments of the present application determine the image complexity and picture difference degree of the to-be-displayed picture through the first feature values of each pixel point in the to-be-displayed picture and the second feature values of each pixel point in the current display picture, identify complex still images, and when performing OD algorithm analysis, reduce the driving voltage value of pixel points compared with the initial overdrive mode, effectively improving the flicker problem caused by misjudgment of the OD algorithm due to the processing of complex still images by the FRC algorithm. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The following, by combining with the drawings and through a detailed description of the specific implementation manners of the present application, will make the technical solutions and other beneficial effects of the present application obvious.

[0046] Figure 1 is a schematic flowchart of the control method of the display panel in the embodiments of the present application;

[0047] Figure 2It is a schematic diagram of the correspondence between the image complexity and the first voltage value in the embodiments of the present application;

[0048] Figure 3 It is a schematic structural diagram of the control device of the display panel in the embodiments of the present application. Detailed implementation manners

[0049] 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. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present application.

[0050] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0051] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, an electrical connection, or a communication with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0052] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0053] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure of this application, components and settings of specific examples are described hereinafter. Of course, they are merely examples and are not intended to limit this application. In addition, this application may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between various embodiments and / or settings discussed. In addition, this application provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0054] Please refer to Figure 1 , an embodiment of this application provides a control method for a display panel. The method includes steps S101 to S106, which are specifically as follows:

[0055] S101, obtaining pixel feature values of each pixel point in adjacent frame display pictures.

[0056] Specifically, when obtaining pixel feature values of each pixel point in adjacent frame display pictures, the adjacent frame display pictures are the current display picture and the next frame of the to-be-displayed picture. Among them, the pixel feature values of each pixel point in the to-be-displayed picture are the first feature values, and the pixel feature values of each pixel point in the current display picture are the second feature values. The first feature values and the second feature values are the same parameters, both being the brightness parameters of pixel points, including but not limited to grayscale values, RGB pixel values, etc. Based on the determined current display picture and the next frame of the to-be-displayed picture, the first feature values and the second feature values of each pixel point can be obtained by parsing the corresponding display pictures.

[0057] In addition, the next frame of the to-be-displayed picture may be the initial to-be-displayed picture or the to-be-displayed picture obtained after parsing based on the FRC algorithm.

[0058] S102, determining the image complexity of the to-be-displayed picture and determining whether the to-be-displayed picture is a still picture according to the pixel feature values.

[0059] Specifically, the image complexity describes the inherent complexity of an image. It can quantitatively feedback the texture information of the image, thereby performing some image operations (such as edge detection, image enhancement, compression, etc.). Generally, the more drastic the grayscale change, the more complex the image. If it is a pure color with a grayscale of 255, there is only one grayscale information of R255 / G255 / B255 in the whole image, and there is no fluctuation in adjacent grayscales, which means the change is 0, and it is the smoothest / simplest image. Therefore, the change degree between different pixel points is determined by comparing the first eigenvalue of each pixel point in the to-be-displayed picture, and then the image complexity of the to-be-displayed picture is determined.

[0060] In addition, if it is a static picture, it is easily misjudged by the OD algorithm due to being parsed by the FRC algorithm. The static picture needs to be judged by combining the pixel eigenvalue of the display pictures of two adjacent frames.

[0061] In one embodiment, the pixel eigenvalue includes the first eigenvalue of each pixel point in the to-be-displayed picture. The step of determining the image complexity of the to-be-displayed picture according to the pixel eigenvalue includes: S201, dividing the to-be-displayed picture into multiple pixel regions, and each pixel region contains a preset number of pixel points; S202, determining the first pixel value of each pixel region according to the first eigenvalue; S203, determining the first pixel difference between adjacent pixel regions according to the first pixel value of each pixel region; S204, determining the image complexity of the to-be-displayed picture according to each first pixel difference; S205, if at least the first number of the first pixel differences exceed the first threshold, determining that the image complexity conforms to the preset configuration information.

[0062] Specifically, the change degree between different pixel points is determined by comparing the first eigenvalue of each pixel point in the to-be-displayed picture, and then the image complexity of the to-be-displayed picture is determined. The to-be-displayed picture is divided into multiple pixel regions, and each pixel region contains a preset number of pixel points. The pixel region is the smallest comparison unit for determining the image complexity. The number of pixel points included in each pixel region can be determined according to different needs and processing capabilities. For example, if the preset number is set to 1, that is, each pixel point is used as a unit for comparison and analysis, or the preset number can be set to other values, which is not specifically limited in this embodiment.

[0063] The first pixel value of each pixel region is determined according to the first eigenvalue. Similarly, the first pixel value is a parameter that can characterize the brightness feature of the pixel point, which can be a grayscale value or an RGB pixel value, which is not specifically limited in this embodiment. Among them, if the preset number is 1, the pixel region is each pixel point, and the first pixel value can be directly obtained. If the pixel region contains more than 1 pixel point, the first pixel value of the pixel region can be the mean value of the feature values of all pixel points in the pixel region, or weighted average can be performed, etc.

[0064] Since the image complexity is essentially a description of the degree of change of different pixel points in the picture, the first pixel difference of each adjacent pixel area is determined according to the first pixel value of each pixel area, and then the image complexity of the picture to be displayed is determined based on the first pixel difference.

[0065] In addition, the preset configuration information is the judgment information of complex images. Images that conform to the preset configuration information are more likely to be distorted during the compression and decompression of the frame buffer module of OD. The preset configuration information is the threshold of the degree of change of each pixel point in the picture to be displayed. First, it is judged whether the difference between each adjacent pixel area is too large, that is, it is judged whether each first pixel difference exceeds the first threshold. If it exceeds the first threshold, the number of first pixel differences exceeding the first threshold is further counted. If it exceeds the first quantity, it is determined that the image complexity conforms to the preset configuration information, and it is determined that the picture to be displayed is a complex picture. Among them, the preset configuration information includes the first quantity and the first threshold, but their specific values can be set according to the accuracy, and are not specifically limited in this embodiment.

[0066] In one embodiment, the pixel feature value includes the second feature value of each pixel point in the current display picture. The step of determining whether the picture to be displayed is a still picture according to the pixel feature value includes: S301, determining the picture difference degree between the picture to be displayed and the current display picture according to the first feature value and the second feature value; S302, determining whether the picture to be displayed is a still picture according to the picture difference degree.

[0067] Specifically, according to the first feature value of each pixel point in the picture to be displayed and the second feature value of each pixel point in the current display picture, the degree of change of the corresponding pixel points of the picture to be displayed and the current display picture is determined, and then the picture difference degree between the picture to be displayed and the current display picture is determined. Then, it is determined whether the picture to be displayed is a still picture based on the picture difference degree of adjacent frame pictures.

[0068] In one embodiment, step S301, determining the picture difference degree between the picture to be displayed and the current display picture according to the first feature value and the second feature value, includes: S401, determining the second pixel value of each pixel area according to the second feature value; S402, determining the second pixel difference of each pixel area according to the first pixel value and the second pixel value; S403, determining the picture difference degree between the picture to be displayed and the current display picture according to each second pixel difference.

[0069] Specifically, when determining the degree of difference between the to-be-displayed screen and the current display screen, it is necessary to compare the pixel values of the corresponding regions of the two. Therefore, based on the multiple pixel regions divided for the to-be-displayed screen to determine the first pixel value, the current display screen is divided into the same pixel regions, and then the second pixel value of each pixel region is determined according to the second characteristic value. The second pixel value is a parameter that can characterize the brightness characteristics of the pixel point, which can be a grayscale value or an RGB pixel value.

[0070] According to the first pixel value and the second pixel value of each pixel region, determine the second pixel difference value of the corresponding pixel region. Determine the degree of difference between the to-be-displayed screen and the current display screen according to each second pixel difference value, that is, determine the change degree of the screens of adjacent frames according to each second pixel difference value, and further determine whether the to-be-displayed screen is a static screen relative to the current display screen.

[0071] In one embodiment, after step S302, determining whether the to-be-displayed screen is a static screen according to the degree of difference between the screens, it further includes: S501, if the number of the second pixel difference values not exceeding the second quantity exceeds the second threshold, determine that the to-be-displayed screen is a static screen.

[0072] Specifically, since the FRC algorithm is executed before the OD algorithm, that is, for a static screen, fluctuations will also be generated after being parsed by the FRC algorithm. Therefore, there is no completely identical display screen for two consecutive frames. However, for a static image with a higher complexity, the FRC algorithm only processes its local part, that is, when it is determined as a complex image and the change degree between the display screens of two consecutive frames is small, it can be determined that it is initially a static screen.

[0073] First, determine whether the difference in pixel values of the same pixel region between the to-be-displayed screen and the current display screen is too large, that is, determine whether each second pixel difference value exceeds the second threshold. If it exceeds the second threshold, further count the number of second pixel difference values exceeding the second threshold. If it does not exceed the second quantity, determine that the change degree of the to-be-displayed screen relative to the current display screen is small, and therefore determine that the to-be-displayed screen is a static screen. Among them, the specific values of the first quantity and the first threshold can be set according to the accuracy, and are not specifically limited in this embodiment.

[0074] S103, when the image complexity conforms to the preset configuration information and the to-be-displayed screen is a static screen, determine that the driving voltage of any pixel point in the to-be-displayed screen is the first voltage value, and the first voltage value is set between the second voltage value and the third voltage value. The second voltage value is the driving voltage of any pixel point in the overdrive mode, and the third voltage value is the driving voltage corresponding to the gray scale of any pixel point.

[0075] Specifically, when it is determined that the to-be-displayed image is a still image based on the image difference degree, when using the OD algorithm to process the to-be-displayed image, if the driving voltage of each pixel defined in the over-drive mode (OD) is still selected, it will cause image distortion and flicker. Therefore, the OD algorithm is also used, but the driving voltage of the pixel needs to be reduced. It should be noted that the reduction of the driving voltage is based on the driving voltage of the pixel in the initially defined over-drive mode, but it is still necessary to ensure that the reduced driving voltage is greater than the driving voltage corresponding to the actual gray level of the pixel.

[0076] That is to say, the driving voltage of any pixel in the initial over-drive mode is the second voltage value, and the driving voltage of any pixel without adopting the over-drive mode is the third voltage value. The driving voltage determined in this embodiment is the first voltage value, and the first voltage value is set between the second voltage value and the third voltage value.

[0077] The principle of OD technology is as follows: when switching from the (n - 1)-th frame to the n-th frame, if it is necessary to change from the gray level Gn-1 to the gray level Gn, if only the driving voltage corresponding to the gray level Gn is given, due to the slow response speed of the liquid crystal flipping, the actual gray level Gn we need cannot be achieved in the n-th frame. By using OD technology, in the n-th frame, the driving voltage of the gray level Gn’ with a larger voltage difference corresponding to the gray level Gn-1 is provided, so as to accelerate the liquid crystal flipping speed and reach the actual gray level Gn we need in the n-th frame.

[0078] Furthermore, in order to implement OD technology, usually an OD look-up table (OD table) is stored in the liquid crystal display driving system. The abscissa of this look-up table is the gray level of the (n - 1)-th frame, and the ordinate is the gray level of the n-th frame. The data obtained by looking up the gray level of the (n - 1)-th frame and the gray level of the n-th frame is the actual gray level output during over-driving. For example, when the (n - 1)-th frame corresponds to 48 gray levels and the n-th frame corresponds to 96 gray levels, by looking up the table, the driving voltage corresponding to 116 gray levels is actually output during over-driving. Then, in this embodiment, assuming that the (n - 1)-th frame corresponds to 48 gray levels and the n-th frame corresponds to 96 gray levels, and the driving voltage corresponding to 116 gray levels is actually output during over-driving, then in the n-th frame, the second voltage value is the driving voltage of 116 gray levels, the third voltage value is the driving voltage of 96 gray levels, and the first voltage value of this embodiment is set between the second voltage value and the third voltage value.

[0079] In addition, for the to-be-displayed image whose image complexity does not conform to the preset configuration information, and the to-be-displayed image whose image complexity conforms to the preset configuration information but is not a still image, the OD algorithm still drives the pixel according to the driving voltage of any pixel in the initial over-drive mode, that is, the second voltage value.

[0080] In addition, in this embodiment, the steps of identifying whether the image complexity of the to-be-displayed screen meets the preset configuration information and determining whether the to-be-displayed screen is a still screen are completely independent processes, and the two do not affect each other. Therefore, there is no strict order of precedence, that is, it is also possible to first determine whether the to-be-displayed screen is a still screen, and then determine whether the image complexity of the to-be-displayed screen determined to be a still screen meets the preset configuration information, or the two steps can be executed simultaneously. Generally speaking, the two steps are executed sequentially to reduce the amount of data to be processed in the second determination based on the result of the first determination.

[0081] In one embodiment, the to-be-displayed screen includes a pixel change complex region and a pixel change flat region. This step includes: S601, when the image complexity meets the preset configuration information and the to-be-displayed screen is a still screen, determining the pixel change complex region and the pixel change flat region according to the first eigenvalue; S602, determining the driving voltage of any pixel point in the pixel change complex region as the first voltage value; S603, determining the driving voltage of any pixel point in the pixel change flat region as the third voltage value.

[0082] Specifically, for a still image with a high complexity, the FRC algorithm only processes a part of it. Similarly, the OD algorithm does not need to reduce the driving voltage for all parts of the to-be-displayed screen. Therefore, the to-be-displayed screen is divided into a pixel change complex region and a pixel change flat region. The pixel change complex region is the pixel points with relatively large changes after being analyzed by the FRC algorithm, and the pixel change flat region is the pixel points with relatively small or even no changes after being analyzed by the FRC algorithm. The pixel change complex region and the pixel change flat region are determined according to the first eigenvalue. For the pixel change complex region, the driving voltage of the corresponding pixel points is adjusted to the first voltage value according to the above embodiment, while the driving voltage of the pixel points corresponding to the pixel change flat region is still set to the third voltage value determined by the initial overdrive mode.

[0083] In one embodiment, step S601, when the image complexity meets the preset configuration information and the to-be-displayed screen is a still screen, determining the pixel change complex region and the pixel change flat region according to the first eigenvalue, includes: S701, when the image complexity meets the preset configuration information and the to-be-displayed screen is a still screen, determining the adjacent pixel region where the first pixel difference exceeds the third threshold as the target pixel group; S702, if at least a third number of consecutive adjacent pixel regions are the target pixel group, determining the consecutive adjacent pixel regions as the pixel change complex region, and the remaining regions as the pixel change flat region.

[0084] Specifically, when the image complexity meets the preset configuration information and the to-be-displayed screen is a still screen, it is determined again whether the difference between adjacent pixel regions is too large, that is, whether each first pixel difference exceeds a third threshold. The third threshold may be the same as or different from the first threshold. The adjacent pixel regions where the first pixel difference exceeds the third threshold are determined as target pixel groups, and then the number of continuously adjacent pixel regions in the target pixel groups is further counted. The continuously adjacent pixel regions are all target pixel groups, that is, the first pixel differences in this region all exceed the third threshold. If the number exceeds a third quantity, the corresponding region is determined as a pixel change complex region, and the remaining regions of the to-be-displayed screen are pixel change flat regions.

[0085] The to-be-displayed screen may only contain one pixel change complex region or may contain multiple pixel change complex regions. Determining the pixel change complex region by setting the third quantity, that is, determining the region for adjusting the driving voltage. For example, if the third quantity is set relatively large, and only the first pixel differences of two adjacent pixel regions in a certain region of the target pixel group exceed the third threshold, then this region is not determined as a pixel change complex region. The specific values of the first quantity and the first threshold can be set according to the accuracy, and are not specifically limited in this embodiment.

[0086] In one embodiment, step S602, determining the driving voltage of any pixel point in the pixel change complex region as the first voltage value includes: S801, obtaining the target pixel difference of adjacent pixel regions in the pixel change complex region; S802, determining the first voltage value according to the target pixel difference and a preset corresponding relationship, where the corresponding relationship is the corresponding relationship between the pixel difference and the driving voltage value.

[0087] Specifically, when the image complexity is low, the reduction amplitude of the driving voltage of OD is small, and when the image complexity is high, the reduction of the OD threshold is obvious. After quantifying the image complexity, the corresponding relationship between the image complexity and the first voltage value is as Figure 2 shown. The abscissa is the image complexity, with a value range of 0 to 100%, and the ordinate is the first voltage value, with a value range of the third voltage value to the second voltage value. When the image complexity is 0, it is equivalent to adopting the initial overdrive mode, and the first voltage value takes the second voltage value in the initial overdrive mode. When the image complexity is 100%, it is equivalent to not adopting the overdrive mode at all, and the first voltage value takes the third voltage value. The method of quantifying the image complexity is a conventional technique in the art and is not specifically described in this embodiment.

[0088] Therefore, obtain the target pixel difference of adjacent pixel regions in the pixel change complex region, and determine the first voltage value according to the target pixel difference and a preset corresponding relationship, where the corresponding relationship is the corresponding relationship between the pixel difference and the driving voltage value. It should be noted that the larger the target pixel difference, the larger the difference between the first voltage value and the corresponding second voltage value.

[0089] S104. Drive the display panel to display the to-be-displayed picture according to the first voltage value corresponding to each pixel point.

[0090] Specifically, drive the display panel to display the to-be-displayed picture according to the first voltage value corresponding to each pixel point. Among them, if the to-be-displayed picture is divided into a pixel change complex area and a pixel change flat area, the driving voltage of each pixel point in the pixel change complex area is the corresponding first voltage value, and the driving voltage of each pixel point in the pixel change flat area is the corresponding third voltage value.

[0091] In this embodiment, the image complexity and the picture difference degree of the to-be-displayed picture are determined through the first feature value of each pixel point in the to-be-displayed picture and the second feature value of each pixel point in the current displayed picture, and the complex still image is identified. When performing the OD algorithm analysis, compared with the initial over-driving mode, the driving voltage of the pixel point is reduced, and the OD driving voltage is dynamically configured, effectively improving the flicker problem caused by the misjudgment of the OD algorithm due to the processing of the complex still image by the FRC algorithm, and will not affect the taste of the dynamic picture.

[0092] To better implement the control method of the display panel in the embodiments of the present application, on the basis of the control method of the display panel, an embodiment of the present application also provides a control device for a display panel, as Figure 3 shown. The control device 900 of the display panel includes:

[0093] An information acquisition module 910, configured to acquire the pixel feature value of each pixel point in the to-be-displayed picture;

[0094] An information analysis module 920, communicatively connected to the information acquisition module 910, configured to determine the image complexity of the to-be-displayed picture and determine whether the to-be-displayed picture is a still picture according to the pixel feature value;

[0095] A pixel driving module 930, communicatively connected to the information analysis module 920, configured to determine the driving voltage of any pixel point in the to-be-displayed picture as the first voltage value when the image complexity meets the preset configuration information and the to-be-displayed picture is a still picture. The first voltage value is set between the second voltage value and the third voltage value. The second voltage value is the driving voltage of any pixel point in the initial over-driving mode, and the third voltage value is the driving voltage corresponding to the gray scale of any pixel point;

[0096] A picture display module 940, communicatively connected to the pixel driving module 930, configured to drive the display panel to display the to-be-displayed picture according to the first voltage value corresponding to each pixel point.

[0097] In some embodiments of the present application, the pixel feature value includes the first feature value of each pixel point in the to-be-displayed picture. The information analysis module 920 is further configured to divide the to-be-displayed picture into multiple pixel regions, each pixel region including a preset number of pixel points; determine the first pixel value of each pixel region according to the first feature value; determine the first pixel difference between each adjacent pixel region according to the first pixel value of each pixel region; determine the image complexity of the to-be-displayed picture according to each first pixel difference; if at least a first number of the first pixel differences exceed a first threshold, determine that the image complexity conforms to the preset configuration information.

[0098] In some embodiments of the present application, the information analysis module 920 is further configured to determine the picture difference degree between the to-be-displayed picture and the current displayed picture according to the first feature value and the second feature value; determine whether the to-be-displayed picture is a still picture according to the picture difference degree.

[0099] In some embodiments of the present application, the information analysis module 920 is further configured to determine the second pixel value of each pixel region according to the second feature value; determine the second pixel difference of each pixel region according to the first pixel value and the second pixel value; determine the picture difference degree between the to-be-displayed picture and the current displayed picture according to each second pixel difference.

[0100] In some embodiments of the present application, the information analysis module 920 is further configured to determine that the to-be-displayed picture is a still picture if no more than a second number of the second pixel differences exceed a second threshold.

[0101] In some embodiments of the present application, the to-be-displayed picture includes a pixel change complex region and a pixel change flat region. The pixel driving module 930 is further configured to, when the image complexity conforms to the preset configuration information and the to-be-displayed picture is a still picture, determine the pixel change complex region and the pixel change flat region according to the first feature value; determine the driving voltage of any pixel point in the pixel change complex region as the first voltage value; determine the driving voltage of any pixel point in the pixel change flat region as the third voltage value.

[0102] In some embodiments of the present application, the pixel driving module 930 is further configured to, when the image complexity conforms to the preset configuration information and the to-be-displayed picture is a still picture, determine the adjacent pixel regions with the first pixel difference exceeding a third threshold as the target pixel group; if at least a third number of consecutive adjacent pixel regions are the target pixel group, determine that the consecutive adjacent pixel regions are determined as the pixel change complex region, and the remaining regions are the pixel change flat regions.

[0103] In some embodiments of the present application, the pixel driving module 930 is further configured to obtain the target pixel difference of adjacent pixel regions in the complex pixel change region; and determine the first voltage value according to the target pixel difference and a preset corresponding relationship, where the corresponding relationship is the corresponding relationship between the pixel difference and the driving voltage value.

[0104] In the above embodiments, the descriptions of the various embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0105] In some embodiments of the present application, a display device is provided, and the display device applies the control method of the display panel described in any one of the above.

[0106] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0107] The above has introduced in detail a control method, device, electronic device and computer-readable storage medium of a display panel provided by the embodiments of the present application. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A control method for a display panel, characterized in that, Including: Obtaining pixel feature values of each pixel point in adjacent frame display pictures; Determining the image complexity of the picture to be displayed and determining whether the picture to be displayed is a still picture according to the pixel feature values; When the image complexity conforms to the preset configuration information and the picture to be displayed is a still picture, determining the driving voltage of any pixel point in the picture to be displayed as a first voltage value, where the first voltage value is set between a second voltage value and a third voltage value, the second voltage value is the driving voltage of any pixel point in the initial overdrive mode, and the third voltage value is the driving voltage corresponding to the gray scale of any pixel point; Driving a display panel to display the picture to be displayed according to the first voltage value corresponding to each pixel point; Wherein, the pixel feature value includes a first feature value of each pixel point in the picture to be displayed, and determining the image complexity of the picture to be displayed according to the pixel feature value includes: dividing the picture to be displayed into a plurality of pixel areas, each pixel area including a preset number of pixel points; determining a first pixel value of each pixel area according to the first feature value; determining a first pixel difference between adjacent pixel areas according to the first pixel value of each pixel area; determining the image complexity of the picture to be displayed according to each first pixel difference; after determining the image complexity of the picture to be displayed and determining whether the picture to be displayed is a still picture according to the pixel feature value, further including: if at least a first number of the first pixel differences exceed a first threshold, determining that the image complexity conforms to the preset configuration information.

2. The control method of the display panel according to claim 1, characterized in that, The pixel feature value includes a second feature value of each pixel point in the current display picture, and determining whether the picture to be displayed is a still picture according to the pixel feature value further includes: Determining the picture difference degree between the picture to be displayed and the current display picture according to the first feature value and the second feature value; Determining whether the picture to be displayed is a still picture according to the picture difference degree.

3. The control method of a display panel according to claim 2, wherein Determining the picture difference degree between the picture to be displayed and the current display picture according to the first feature value and the second feature value includes: Determining a second pixel value of each pixel area according to the second feature value; Determining a second pixel difference of each pixel area according to the first pixel value and the second pixel value; Determining the picture difference degree between the picture to be displayed and the current display picture according to each second pixel difference.

4. The control method of the display panel according to claim 3, characterized in that, After determining the image complexity of the picture to be displayed and determining whether the picture to be displayed is a still picture according to the pixel feature value, further including: If no more than a second number of the second pixel differences exceed a second threshold, determining that the picture to be displayed is a still picture.

5. The control method of the display panel according to claim 1, characterized in that, The picture to be displayed includes a pixel change complex area and a pixel change flat area, and when the image complexity conforms to the preset configuration information and the picture to be displayed is a still picture, determining the driving voltage of any pixel point in the picture to be displayed as a first voltage value includes: When the image complexity conforms to the preset configuration information and the to-be-displayed picture is a static picture, determine the pixel change complex area and the pixel change flat area according to the first eigenvalue; Determine the driving voltage of any pixel point in the pixel change complex area as the first voltage value; Determine the driving voltage of any pixel point in the pixel change flat area as the third voltage value.

6. The control method of the display panel according to claim 5, characterized in that, The step of when the image complexity conforms to the preset configuration information and the to-be-displayed picture is a static picture, determining the pixel change complex area and the pixel change flat area according to the first eigenvalue includes: When the image complexity conforms to the preset configuration information and the to-be-displayed picture is a static picture, determine the adjacent pixel area where the first pixel difference exceeds the third threshold as the target pixel group; If at least a third number of consecutive adjacent pixel areas are the target pixel group, determine the consecutive adjacent pixel areas as the pixel change complex area, and the remaining areas as the pixel change flat area.

7. The control method of the display panel according to claim 6, characterized in that, The step of determining the driving voltage of any pixel point in the pixel change complex area as the first voltage value includes: Obtain the target pixel difference of adjacent pixel areas in the pixel change complex area; Determine the first voltage value according to the target pixel difference and a preset corresponding relationship, where the corresponding relationship is the corresponding relationship between the pixel difference and the driving voltage value.

8. A control device for a display panel, characterized in that, including: An information acquisition module, configured to acquire the pixel eigenvalue of each pixel point in the to-be-displayed picture; An information analysis module, communicatively connected to the information acquisition module, configured to determine the image complexity of the to-be-displayed picture and determine whether the to-be-displayed picture is a static picture according to the pixel eigenvalue; A pixel driving module, communicatively connected to the information analysis module, configured to, when the image complexity conforms to the preset configuration information and the to-be-displayed picture is a static picture, determine the driving voltage of any pixel point in the to-be-displayed picture as the first voltage value, where the first voltage value is set between the second voltage value and the third voltage value, the second voltage value is the driving voltage of any pixel point in the initial overdrive mode, and the third voltage value is the driving voltage corresponding to the gray scale of any pixel point; A picture display module, communicatively connected to the pixel driving module, configured to drive the display panel to display the to-be-displayed picture according to the first voltage value corresponding to each pixel point; Wherein, the pixel eigenvalue includes the first eigenvalue of each pixel point in the to-be-displayed picture, and the information analysis module is configured to divide the to-be-displayed picture into multiple pixel areas, each pixel area includes a preset number of pixel points; determine the first pixel value of each pixel area according to the first eigenvalue; determine the first pixel difference between adjacent pixel areas according to the first pixel value of each pixel area; determine the image complexity of the to-be-displayed picture according to each first pixel difference; the control device of the display panel is further configured to determine that the image complexity conforms to the preset configuration information when at least a first number of the first pixel differences exceed the first threshold.

9. A display device, characterized in that, The display device applies the display panel control method according to any one of claims 1-7.

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