Display module, control method, storage medium and display device

Abstract

The invention discloses a display module, a control method, a storage medium and a display device. The display module comprises a display panel, wherein the display panel comprises a plurality of pixels; the processing module is electrically connected with the display panel, and the processing module is configured to obtain a current brightness distribution mean value of the display panel; according to the current brightness distribution mean value of the display panel, the first grouping number N of the white light emitting time of each pixel in one frame time is determined, and N is a natural number larger than or equal to 2; and controlling each pixel to emit light according to N light emitting time in one frame time. In the display module, the processing module can determine the first grouping number N of the white light emitting time of each pixel in one frame time according to the current brightness distribution mean value of the display panel, and controls each pixel to emit light according to N light emitting time in one frame time, so that instantaneous noise points are reduced or avoided to a certain extent, and the display quality is improved. And the visual experience of the user is improved.

Description

Technical Field

[0001] This invention relates to the field of pixel driving technology, and in particular to a display module, control method, storage medium and display device. Background Technology

[0002] Currently, the luminous efficiency of each pixel in a display panel exhibits significant non-uniformity, meaning that each pixel emits light for a different duration. This implies that in near-eye display devices, these non-uniform pixels and differences in emission time can generate transient noise (shimmering), which can interfere with the user's visual experience and may even lead to eye strain. Summary of the Invention

[0003] The present invention provides a display module, a control method, a storage medium, and a display device to solve at least one of the above-mentioned technical problems.

[0004] An embodiment of the present invention provides a display module comprising:

[0005] The display panel includes a plurality of pixels;

[0006] A processing module, electrically connected to the display panel, is configured as follows:

[0007] Obtain the current average brightness distribution of the display panel;

[0008] Based on the current average brightness distribution of the display panel, determine the first group number N of the white light emission time of each pixel within one frame, where N is a natural number greater than or equal to 2;

[0009] Each pixel is controlled to emit light for N light-emitting times within one frame.

[0010] In the aforementioned display module, the processing module can determine the first group number N of white light emission time for each pixel within a frame time based on the current average brightness distribution of the display panel, and control each pixel to emit light in N emission times within a frame time. This increases the frequency of white light emission time within a frame time, ensures phase synchronization of emission between pixels, and thus reduces or avoids instantaneous noise to a certain extent, reduces noise in the time domain, and improves the user's visual experience.

[0011] In some implementations, the processing module is configured to:

[0012] Obtain the preset number of groups A corresponding to the attributes of the display panel within one frame time, and obtain the second number of groups C within one frame time determined according to the current average brightness distribution of the display panel;

[0013] The smaller of A and C is determined as the number N of the first group.

[0014] In some embodiments, the processing module includes a uniformity detection module and a driving module, wherein the driving module is configured to control the display panel to emit light;

[0015] The uniformity detection module is configured to detect the luminous brightness of all pixels on the display panel;

[0016] The average current brightness distribution of the display panel is determined based on the luminance of each pixel of the display panel.

[0017] In some embodiments, the uniformity detection module includes a data processing module, which is configured to:

[0018] Based on the resolution of the display panel and the luminance of all pixels of the display panel, obtain the two-dimensional luminance matrix of the display panel;

[0019] The average current brightness distribution of the display panel is obtained based on the two-dimensional brightness matrix of the display panel.

[0020] In some embodiments, the processing module includes a grouping scheme control module electrically connected to the uniformity detection module, and the grouping scheme control module is configured to:

[0021] The compensated emission time of each pixel is obtained based on the brightness of each pixel and the average current brightness distribution of the display panel.

[0022] Obtain the maximum difference in emissivity time between each pixel and its surrounding pixels after compensation;

[0023] A perceptible threshold is obtained based on the maximum difference and the distance between each pixel and the pixel corresponding to the maximum difference.

[0024] The contrast ratio between each pixel and the pixel corresponding to the maximum difference is obtained based on the brightness of each pixel and the brightness of the pixel corresponding to the maximum difference.

[0025] The number of groups corresponding to when the perceptible threshold is greater than or equal to the contrast is determined as the first group number N of the white light emission time of each pixel.

[0026] In some implementations, the grouping scheme control module is configured as follows:

[0027] The perceptible threshold and contrast of the current pixel are obtained based on the number of the first group of the first pixel, the maximum difference and distance corresponding to the current pixel;

[0028] When the perceptible threshold corresponding to the current pixel is greater than or equal to the corresponding contrast, the number of groups of the current pixel is determined to be the number of groups of the first pixel.

[0029] When the perceptible threshold corresponding to the current pixel is less than the corresponding contrast, the number of groups is increased based on the first group number of the first pixel until the perceptible threshold corresponding to the current pixel is greater than or equal to the corresponding contrast.

[0030] In some embodiments, the processing module includes a grouping scheme control module electrically connected to the uniformity detection module, and the grouping scheme control module is configured to:

[0031] The compensated emission time of each pixel is obtained based on the brightness of each pixel and the average current brightness distribution of the display panel.

[0032] Obtain the maximum difference between the compensated emission time of each pixel and its surrounding pixels to obtain all the maximum differences for all pixels;

[0033] Obtain the second pixel, which is the pixel corresponding to the largest maximum difference among all maximum differences;

[0034] The perceptible threshold is obtained based on the maximum difference and the distance between the second pixel and the pixel corresponding to the maximum difference.

[0035] The contrast ratio between the second pixel and the pixel corresponding to the maximum difference is obtained based on the brightness of the second pixel and the brightness of the pixel corresponding to the maximum difference.

[0036] The number of groups corresponding to when the perceptible threshold is greater than or equal to the contrast is determined as the first group number N of the white light emission time of the second pixel and the remaining pixels.

[0037] In some implementations, the detectability threshold is positively correlated with the time frequency, which is positively correlated with N.

[0038] In some implementations, when the lengths of the N emission times are different, the time frequency is the minimum value of all time frequencies corresponding to the N emission times.

[0039] In some embodiments, the processing module includes a grouping scheme control module, which is configured to:

[0040] Based on the first grouping number N of the white light emission time of each pixel and the duty cycle of each pixel, the interval time between two adjacent emission times is obtained. The start time of the first emission time is the start time of each frame, and the length of the N emission times is the same.

[0041] The start time of the remaining emission time is obtained based on the interval.

[0042] In some embodiments, the display module includes a driving module electrically connected to the display panel, and the driving module includes a first counter and a second counter;

[0043] The second counter is configured to count the number of groups of the emission time;

[0044] The first counter is configured to generate grayscale counting information, which is used to control the start and end points of the emission time. When the first counter completes the grayscale counting of one emission time, the second counter increments the count of the number of groups of the emission time by one until the count of the emission time by the second counter is equal to the first group of the emission time within one frame.

[0045] In some implementations, the duration of the emission time is determined by the pulse width modulation signal of each pixel.

[0046] This invention provides a control method for a display module, the display module including a display panel, the display panel including a plurality of pixels;

[0047] The control method includes:

[0048] Obtain the current average brightness distribution of the display panel;

[0049] Based on the current average brightness distribution of the display panel, determine the first group number N of the white light emission time of each pixel within one frame, where N is a natural number greater than or equal to 2;

[0050] Each pixel is controlled to emit light for N light-emitting times within one frame.

[0051] In some implementations, determining the first group number N of white light emission time for each pixel within a frame time, based on the current average brightness distribution of the display panel, includes:

[0052] Obtain the preset number of groups A corresponding to the attributes of the display panel within one frame time, and obtain the second number of groups C within one frame time determined according to the current average brightness distribution of the display panel;

[0053] The smaller of A and C is determined as the number N of the first group.

[0054] In some embodiments, obtaining the current average brightness distribution of the display panel includes:

[0055] Control all pixels of the display panel to emit light;

[0056] Detect the luminous brightness of all pixels on the display panel;

[0057] The average current brightness distribution of the display panel is determined based on the luminance of each pixel of the display panel.

[0058] In some embodiments, determining the current average brightness distribution of the display panel based on the luminance of each pixel of the display panel includes:

[0059] Based on the resolution of the display panel and the luminance of all pixels of the display panel, obtain the two-dimensional luminance matrix of the display panel;

[0060] The average current brightness distribution of the display panel is obtained based on the two-dimensional brightness matrix of the display panel.

[0061] In some implementations, determining the first group number N of white light emission time for each pixel within a frame time, based on the current average brightness distribution of the display panel, includes:

[0062] The compensated emission time of each pixel is obtained based on the brightness of each pixel and the average brightness distribution of the display panel.

[0063] Obtain the maximum difference in emissivity time between each pixel and its surrounding pixels after compensation;

[0064] A perceptible threshold is obtained based on the maximum difference and the distance between each pixel and the pixel corresponding to the maximum difference.

[0065] The contrast ratio between each pixel and the pixel corresponding to the maximum difference is obtained based on the brightness of each pixel and the brightness of the pixel corresponding to the maximum difference.

[0066] The number of groups corresponding to when the perceptible threshold is greater than or equal to the contrast is determined as the first group number N of the white light emission time of each pixel.

[0067] In some implementations, determining the first group number N of white light emission time for each pixel within a frame time, based on the current average brightness distribution of the display panel, includes:

[0068] The perceptible threshold and contrast of the current pixel are obtained based on the number of the first group of the first pixel, the maximum difference and distance corresponding to the current pixel;

[0069] When the perceptible threshold corresponding to the current pixel is greater than or equal to the corresponding contrast, the number of groups of the current pixel is determined to be the number of groups of the first pixel.

[0070] When the perceptible threshold corresponding to the current pixel is less than the corresponding contrast, the number of groups is increased based on the first group number of the first pixel until the perceptible threshold corresponding to the current pixel is greater than or equal to the corresponding contrast.

[0071] In some implementations, determining the first group number N of white light emission time for each pixel within a frame time, based on the current average brightness distribution of the display panel, includes:

[0072] The compensated emission time of each pixel is obtained based on the brightness of each pixel and the average current brightness distribution of the display panel.

[0073] Obtain the maximum difference between the compensated emission time of each pixel and its surrounding pixels to obtain all the maximum differences for all pixels;

[0074] Obtain the second pixel, which is the pixel corresponding to the largest maximum difference among all maximum differences;

[0075] The perceptible threshold is obtained based on the maximum difference and the distance between the second pixel and the pixel corresponding to the maximum difference.

[0076] The contrast ratio between the second pixel and the pixel corresponding to the maximum difference is obtained based on the brightness of the second pixel and the brightness of the pixel corresponding to the maximum difference.

[0077] The number of groups corresponding to when the perceptible threshold is greater than or equal to the contrast is determined as the first group number N of the white light emission time of the second pixel and the remaining pixels.

[0078] In some implementations, the detectability threshold is positively correlated with the time frequency, which is positively correlated with N.

[0079] In some implementations, when the lengths of the N emission times are different, the time frequency is the minimum value of all time frequencies corresponding to the N emission times.

[0080] In some implementations, controlling each pixel to emit light for N light-emitting times within one frame includes:

[0081] Based on the first grouping number N of the white light emission time of each pixel and the duty cycle of each pixel, the interval time between two adjacent emission times is obtained. The start time of the first emission time is the start time of each frame, and the length of the N emission times is the same.

[0082] The start time of the remaining emission time is obtained based on the interval.

[0083] In some embodiments, the display module includes a first counter and a second counter;

[0084] The control method includes:

[0085] The second counter counts the number of groups of the emission time;

[0086] The first counter generates grayscale counting information, which is used to control the start and end points of the emission time. When the first counter completes the grayscale counting of one emission time, the second counter increments the count of the number of groups of the emission time by one, until the count of the emission time by the second counter is equal to the first group of the emission time within one frame.

[0087] In some implementations, the duration of the emission time is determined by the pulse width modulation signal of each pixel.

[0088] The present invention provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the control method of any of the above embodiments.

[0089] An embodiment of the present invention provides a display device comprising the display module of any of the above embodiments.

[0090] In the above-mentioned control method, storage medium and display device, the first group number N of white light emission time of each pixel in one frame time can be determined according to the current average brightness distribution of the display panel, and each pixel is controlled to emit light in N emission times in one frame time. This increases the frequency of white light emission time in one frame time, ensures the phase synchronization of emission between pixels, and thus reduces or avoids the generation of instantaneous noise to a certain extent, reduces noise in the time domain and improves the user's visual experience.

[0091] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0092] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0093] Figure 1 This is a schematic diagram of the display module according to an embodiment of the present invention;

[0094] Figure 2 This is a schematic diagram of the display panel structure according to an embodiment of the present invention;

[0095] Figure 3 This is a schematic diagram of the pixel structure according to an embodiment of the present invention;

[0096] Figure 4 This is a schematic diagram of white light emission time grouping according to an embodiment of the present invention;

[0097] Figure 5 This is another schematic diagram of white light emission time grouping according to an embodiment of the present invention;

[0098] Figure 6 This is a schematic diagram of another module of the display module according to an embodiment of the present invention;

[0099] Figure 7 This is a schematic diagram of the light emission signal, grayscale counting signal, and light emission time counting signal according to an embodiment of the present invention;

[0100] Figure 8 This is a flowchart illustrating the control method for the display module according to an embodiment of the present invention;

[0101] Figure 9 This is a schematic diagram of the emission time of white light in related technologies.

[0102] Explanation of key component symbols:

[0103] Display module 100, display panel 12, processing module 14, pixel 16, light-emitting element 18, light-combining element 20, controller 21, image processing module 22, driving module 24, uniformity detection module 26, grouping scheme control module 28, data processing module 30, brightness detection module 32, and output module 34. Detailed Implementation

[0104] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0105] The following disclosure provides many different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0106] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0107] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship according to the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0108] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0109] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0110] Please see Figures 1 to 3 A display module 100 according to an embodiment of the present invention includes a display panel 12 and a processing module 14. The display panel 12 includes a plurality of pixels 16. The processing module 14 is electrically connected to the display panel 12, and the processing module 14 is configured to:

[0111] Obtain the current average brightness distribution of display panel 12;

[0112] Based on the current average brightness distribution of the display panel 12, determine the number of the first group N of white light emission time for each pixel 16 within one frame, where N is a natural number greater than or equal to 2.

[0113] Control each pixel 16 to emit light in N light-emitting intervals within one frame.

[0114] In the aforementioned display module 100, the processing module 14 can determine the first group number N of white light emission time for each pixel 16 within a frame time based on the current average brightness distribution of the display panel 12, and control each pixel 16 to emit light in N emission times within a frame time to ensure that the emission phase of the pixels 16 is synchronized. This increases the frequency of white light emission time within a frame time, thereby reducing or avoiding instantaneous noise to a certain extent, reducing temporal noise, and improving the user's visual experience.

[0115] Specifically, the display panel 12 includes, but is not limited to, display panels 12 employing digital modulation technology such as Micro LED (micro light-emitting diode) display panel 12, DLP (Digital Light Processing) display panel 12, LCoS (Liquid Crystalon Silicon) display panel 12, and Micro OLED (micro organic light-emitting diode) display panel 12.

[0116] The embodiments of the present invention are applicable to RGB tri-color luminescent panels. Optionally, in one embodiment, such as Figure 2As shown, the RGB light-emitting elements are distributed on the same display panel 12. Each pixel 16 includes three RGB light-emitting elements 18, which include, but are not limited to, Micro LED, Micro OLED, etc., and the arrangement includes, but is not limited to, the uniform arrangement shown.

[0117] Alternatively, in one implementation, such as Figure 3 As shown, in a pixel 16, the RGB three-color light-emitting elements 18 correspond to three light-emitting panels respectively. Each light-emitting panel has only one color light-emitting element. The three colors of light are mixed into white light by the light-combining element 20.

[0118] In related technologies, temporal noise arises because each pixel has different luminous efficiency. To compensate for the uneven panel brightness caused by this difference in luminous efficiency, compensation is needed in the emission time, resulting in different emission times for each pixel. Furthermore, for Micro LED, there are inherently significant differences in luminous efficiency and emission time among the RGB colors. Therefore, from the perspective of emission time, each pixel and each color is extremely uneven. In near-eye display devices, due to exploration or interaction needs, frequent eye movements generate significant relative displacement between the eyes and the screen, causing uneven temporal light modulation emitted by the screen to become spatial-temporal domain noise on the retina.

[0119] The reason for grouping to solve defects: The root cause of the defects lies in the difference in light emission time. The display module 100 of this invention improves the difference in light emission time between pixels 16 by grouping, ensuring phase synchronization of light emission among pixels 16 and reducing temporal noise. For Micro LED, please refer to... Figure 9 In related technologies, within one frame, the white light emission time (RGB emission simultaneously) is W0, and the emission time contributing noise is the difference between the emission times of red, green, and blue light, which is T1. In this embodiment of the invention, this difference is also shortened by grouping.

[0120] In some embodiments, such as Figure 4In the illustrated embodiment, N=2, meaning that within one frame, the white light emission time is divided into two groups of emission times, W1 and W2, either evenly or unevenly. In these two groups, the emission time differences between red and green / blue light are T21 and T22, respectively. Both T21 and T22 are less than T1, thus shortening the difference between the groups. Within one frame, the number of white light emission times becomes N=2. This increases the frequency of white light emission, reducing the emission time difference between pixels 16. Based on the integral characteristics and low-frequency characteristics of the human eye, the display module 100 of this embodiment can ensure phase synchronization of emission between pixels 16, thereby reducing or avoiding instantaneous noise to a certain extent, reducing temporal noise, improving visually perceptible noise, and even eliminating visually perceptible noise altogether. Simultaneously, this grouping method also ensures phase synchronization of different colors of Micro LED emission to a certain extent, reducing temporal noise.

[0121] Optionally, please combine Figure 1 The display module 100 also includes a controller 21 and an image processing module 22. The processing module 14 may include a driving module 24, a uniformity detection module 26, and a grouping scheme control module 28. The image processing module 22 can be electrically connected to the controller 21 and the driving module 24. The driving module 24 is electrically connected to the display panel 12 and the grouping scheme control module 28. The uniformity detection module 26 is electrically connected to the grouping scheme control module 28.

[0122] The controller 21 can send control commands to the image processing module 22, which can then send the data to be displayed to the driver module 24 based on the control commands. The driver module 24 generates the control signal required by the target, controlling each pixel 16 to emit light. The uniformity detection module 26 can obtain the current average brightness distribution of the display panel 12 when it emits light. The grouping scheme control module 28 can determine the first group number N of the white light emission time of each pixel 16 within one frame based on the current average brightness distribution of the display panel 12. The driver module 24 can control each pixel 16 to emit light for N emission times within one frame, thereby increasing the frequency of white light emission time within one frame.

[0123] In some implementations, the duration of the emission time is determined by the pulse-width modulation (PWM) signal of each pixel 16.

[0124] Therefore, pixel 16 can be controlled to emit light via a PWM signal.

[0125] Specifically, the driving module 24 can modulate the PWM signal according to the first grouping number N, so that within one frame time, the PWM signal has N pulses, and the width of each pulse can correspond to the length of a light-emitting time, so that the pixel 16 can emit light during the corresponding light-emitting time.

[0126] In some embodiments, the processing module 14 is configured to:

[0127] Obtain the preset grouping number A within one frame time corresponding to the attributes of the display panel 12, and obtain the second grouping number C within one frame time determined according to the current brightness distribution mean value of the display panel 12;

[0128] Determine the smaller one of A and C as the first grouping number N.

[0129] Thus, the first grouping number N can be adapted to the attributes of the display panel 12.

[0130] Specifically, the preset grouping number A corresponding to the attributes of the display panel 12 can be an inherent attribute of the display panel 12, which can be calibrated and stored in advance. In one embodiment, the attributes of the display panel 12 include but are not limited to the pixel response limit. Increasing the grouping number will pose challenges to the device performance (for example, the minimum pulse light-emitting time becomes shorter). For engineers, they need to balance the device performance and the shimmering defect, so engineers will choose a smaller grouping scheme (a smaller grouping scheme also has an improvement effect).

[0131] Thus, the processing module 14 can compare A and C, determine the smaller one of A and C as the first grouping number N, and control each pixel to emit light according to N light-emitting times within one frame time, so that the grouping number can be adapted to the attributes of the display panel 12.

[0132] In one embodiment, if A > C, then N = C. In one embodiment, if A < C, then N = A. In one embodiment, if A = C, then N = A or N = C.

[0133] In some embodiments, please combine Figure 1 , the processing module 14 includes a uniformity detection module 26 and a driving module 24, and the driving module 24 is configured to: control the display panel 12 to emit light;

[0134] The uniformity detection module 26 is configured to: detect the light-emitting brightness of all pixels 16 of the display panel 12;

[0135] Determine the current brightness distribution mean value of the display panel 12 according to the light-emitting brightness of each pixel 16 of the display panel 12.

[0136] Therefore, the current average brightness distribution of the display panel 12 can be determined.

[0137] Optionally, please combine Figure 1 During the detection of the average brightness distribution of the display panel 12, the controller 21 can send a detection command to the image processing module 22. The image processing module 22 sends the detection data to be displayed to the driver module 24 according to the detection command. The driver module 24 can control all pixels of the display panel 12 to emit light to display the detection image according to the detection data. Optionally, the detection image can be a 255 grayscale image.

[0138] The uniformity detection module 26 can detect the current average brightness distribution of the display panel 12 when the detection image is displayed on the display panel 12. The grouping scheme control module 28 can determine the first group number N of the white light emission time of each pixel 16 within one frame time based on the current average brightness distribution of the display panel 12.

[0139] Alternatively, in other embodiments, the detection of the average brightness distribution of the display panel 12 can be skipped, and the pre-measured average brightness distribution of the display panel 12 can be directly input to the grouping scheme control module 28.

[0140] In some implementations, please refer to Figure 6 The uniformity detection module 26 includes a data processing module 30, which is configured as follows:

[0141] Based on the resolution of the display panel 12 and the luminance of all pixels 16 of the display panel 12, obtain the two-dimensional luminance matrix of the display panel 12;

[0142] The average current brightness distribution of the display panel 12 is obtained based on the two-dimensional brightness matrix of the display panel 12.

[0143] Therefore, the current average brightness distribution of the display panel 12 can be obtained.

[0144] Optionally, the uniformity detection module 26 includes a brightness detection module 32 and an output module 34. The data processing module 30 is electrically connected to the brightness detection module 32 and the output module 34. The brightness detection module 32 (including but not limited to illuminance meters, luminance meters, spectrometers, etc.) can be used to measure the brightness of the display panel 12 displaying the detection image. For example, it can measure the white field brightness of the entire display panel 12 before compensation. The measured luminance of the display panel 12 is input to the data processing module 30. The data processing module 30 can obtain the two-dimensional brightness matrix L of the display panel 12 based on the resolution of the display panel 12 and the luminance of all pixels 16 of the display panel 12. ij Where i and j represent the positions of pixel 16, and L ijThis represents the brightness value of pixel 16 in the i-th row and j-th column.

[0145] The data processing module 30 can process the two-dimensional brightness matrix L of the display panel 12. ij The output module 34 can output the current average brightness distribution of the display panel 12 to the grouping scheme control module 28.

[0146] Optionally, the formula for calculating the average brightness distribution of the display panel 12 is as follows:

[0147] Assume the dimension of the two-dimensional brightness matrix is ​​m×n. Then the mean brightness distribution of display panel 12 is μ=(ΣΣL ij ) / (m×n).

[0148] In some implementations, please refer to Figure 1 and Figure 6 The processing module 14 includes a grouping scheme control module 28, an electrical connection uniformity detection module 26 for the grouping scheme control module 28, and the grouping scheme control module 28 is configured as follows:

[0149] Based on the brightness of each pixel 16 and the average brightness distribution of the current display panel 12, the compensated light emission time of each pixel 16 is obtained.

[0150] Obtain the maximum difference in emissivity time between each pixel 16 and its surrounding pixels 16 after compensation;

[0151] The perceptible threshold is obtained based on the maximum difference and the distance between each pixel 16 and the pixel 16 corresponding to the maximum difference.

[0152] The contrast ratio of each pixel 16 to the pixel 16 corresponding to the maximum difference is obtained based on the brightness of each pixel 16 and the brightness of the pixel 16 corresponding to the maximum difference.

[0153] The number of groups corresponding to the time when the perceptible threshold is greater than or equal to the contrast is determined as the first number of groups N for the white light emission time of each pixel 16.

[0154] Therefore, the number N of the first group can be determined based on the brightness of each pixel 16 and the average current brightness distribution of the display panel 12.

[0155] Specifically, the compensated emission time of each pixel 16 is inversely proportional to the luminous efficiency. Based on the ratio of brightness, the ratio of emission time can be obtained to correct the emission time before compensation, so as to obtain the compensated emission time.

[0156] Optionally, the brightness ratio is K1, where K1 = the ratio of the brightness of each pixel 16 to the average current brightness distribution of the display panel 12. The emission time ratio is K2, where K2 = 1 / K1. The compensated emission time is equal to the product of K2 and the emission time before compensation. The emission time before compensation is known; it is the white light emission time before grouping, i.e., the sum of N emission times.

[0157] Optionally, the surrounding pixels 16 can be Pn pixels 16 enclosed by a circle centered at a certain pixel 16 and with a radius of Pn. That is, the maximum difference T between each pixel 16 and its Pn surrounding pixels in all compensated emission times is obtained. ij_max .

[0158] Pn can refer to the range of human eye activity within one frame. Optionally, in one implementation, Pn can be calculated as follows: When a user uses an AR / VR (Virtual Reality) device, they will perform frequent eye movements, so Pn = (1 / frame rate) × duty cycle × eye movement speed × PPD. PPD represents pixel density per degree, and the duty cycle represents the duty cycle of the control signal that controls the emission of pixels 16 (such as the duty cycle of a PWM signal). Optionally, the eye movement speed can be less than or equal to 100 degrees / second. In one example, eye movement speed = 100 degrees / second.

[0159] The perceptibility threshold can be calculated using a space-time contrast sensitivity function. Specifically, the space-time contrast sensitivity function is a function used to describe the sensitivity of the human visual system to different spatiotemporal frequencies. It is based on modeling the perceptual characteristics of the human eye to different spatial frequencies (pattern changes in spatial location) and temporal frequencies (pattern changes in time). In related technologies, there are many calibrated space-time contrast sensitivity functions, whose parameters and forms differ slightly, but their trends are consistent. Optionally, in one implementation, the space-time contrast sensitivity function can adopt the computational model "The Pyramid of Visibility" published by Andrew B. Watson in 2016. Optionally, in other implementations, the space-time contrast sensitivity function can also be a self-developed space-time contrast sensitivity function or other space-time contrast sensitivity functions from related technologies.

[0160] Optionally, the spatiotemporal contrast sensitivity function has two input parameters: temporal frequency and spatial frequency. For each pixel 16, the temporal frequency can be calculated from the maximum difference Tij_max, and the spatial frequency can be calculated from the distance between this pixel 16 and the pixel 16 corresponding to the maximum difference Tij_max. Substituting these into the spatiotemporal contrast sensitivity function (model) yields a perceptible threshold, which can be used as the contrast threshold. Wherein, temporal frequency = 1 / Tij_max. Spatial frequency = distance / PPD / 2, with the unit of spatial frequency being cycles per degree (cpd). Distance is the distance between this pixel 16 and the pixel 16 corresponding to the maximum difference Tij_max.

[0161] Optionally, each pixel 16 is compared with the maximum difference T. ij_max The contrast of pixel 16 can be the Michelson contrast ratio, where contrast = (L1 - L2) / (L1 + L2), and L1 and L2 represent the current pixel 16 and the maximum difference T, respectively. ij_max The brightness value corresponding to pixel 16.

[0162] Initially, there is no grouping, meaning the first group size is 1. If the perceptible threshold is less than the contrast, the first group size is increased by 1, meaning there are more first groups. A new time frequency and perceptible threshold are calculated until the perceptible threshold is greater than or equal to the contrast. Therefore, the number of groups corresponding to when the perceptible threshold is greater than or equal to the contrast can be determined as the first group size N for the white light emission time of each pixel (16).

[0163] It is understood that the method for determining the number of the second group C based on the current average brightness distribution of the display panel 12 can also refer to the method for determining the number of the first group N based on the current average brightness distribution of the display panel 12 in this embodiment.

[0164] In some implementations, the perceptibility threshold is positively correlated with the time frequency, which is positively correlated with N. Specifically, the number of the first group can change the time frequency, where the time frequency after grouping = the time frequency before grouping × the number of groups. A grouping scheme with a larger N implies an increased time frequency, which increases the perceptibility threshold (contrast threshold). Each pixel 16 and the maximum difference T ij_max The contrast of the corresponding pixel 16 remains unchanged.

[0165] It is understandable that the number N in the first group for each pixel can be the same or different.

[0166] In some implementations, when the lengths of the N emission times are different, the time frequency is the minimum of all time frequencies corresponding to the N emission times.

[0167] Specifically, grouping can be done in equal or unequal manner. For equal grouping, the time frequency after grouping = the time frequency before grouping × the number of groups. For unequal grouping, the time frequency of each pixel (16) is the minimum of all time frequencies corresponding to N emission times, that is, the time frequency after grouping = min(time frequencies corresponding to all emission times).

[0168] In some implementations, the grouping scheme control module 28 is configured as follows:

[0169] The perceptible threshold and contrast of the current pixel 16 are obtained based on the number of groups of the first pixel and the maximum difference and distance of the current pixel 16.

[0170] When the perceptible threshold corresponding to the current pixel 16 is greater than or equal to the corresponding contrast, the number of groups for the current pixel 16 is determined to be the number of groups for the first pixel.

[0171] When the perceptible threshold corresponding to the current pixel 16 is less than the corresponding contrast, the number of groups is increased based on the number of groups in the first pixel until the perceptible threshold corresponding to the current pixel 16 is greater than or equal to the corresponding contrast.

[0172] This reduces the amount of computation and improves efficiency.

[0173] Specifically, in one implementation, the first pixel and the current pixel 16 may be a pixel 16 that is adjacent to the current pixel in the order of calculating the number of groups.

[0174] The perceptible threshold and contrast of the current pixel 16 can be obtained by using the number of the first group of the first pixel and the maximum difference and distance corresponding to the current pixel 16. Specifically, the time frequency corresponding to the number of the first group of the first pixel can be used as the time frequency of the current pixel 16, and the spatial frequency of the current pixel 16 can be substituted into the spatiotemporal contrast sensitivity function to calculate the perceptible threshold of the current pixel 16. The contrast of the current pixel 16 is calculated by using the brightness value of the current pixel 16 and the brightness value of the pixel 16 corresponding to the maximum difference. In one example, the number of groups can be calculated starting from the top-left pixel 16 of the display panel 12, i.e., the top-left pixel 16 is the first pixel 16. First, the number of the first group N of the first pixel 16 is calculated. When calculating the next pixel 16 to the right of the first pixel 16, the first pixel 16 is used as the first pixel, and the perceptible threshold of the current pixel 16 is obtained by using the time frequency corresponding to N and the spatial frequency of the current pixel 16.

[0175] If the perceptible threshold corresponding to the current pixel 16 is greater than or equal to the corresponding contrast, it indicates that the first group number of the first pixel also applies to the group number of the current pixel 16, and then the first group number of the current pixel 16 can be determined as the first group number of the first pixel.

[0176] If the perceptible threshold corresponding to the current pixel 16 is less than the corresponding contrast, the number of groups can be increased based on the number of groups in the first pixel until the perceptible threshold corresponding to the current pixel 16 is greater than or equal to the corresponding contrast, thereby reducing the amount of calculation and improving efficiency.

[0177] After calculating the score of all 16 pixels in sequence, the number of the first group of all 16 pixels is finally obtained.

[0178] In some embodiments, the processing module 14 includes a grouping scheme control module 28, which is electrically connected to the uniformity detection module 26. The grouping scheme control module 28 is configured as follows:

[0179] Based on the brightness of each pixel 16 and the average brightness distribution of the current display panel 12, obtain the compensated light emission time of each pixel 16;

[0180] Obtain the maximum difference in the compensated emission time between each pixel 16 and its surrounding pixels 16 to obtain all the maximum differences corresponding to all pixels 16;

[0181] Obtain the second pixel, which is pixel 16, corresponding to the largest maximum difference among all maximum differences.

[0182] The perceptible threshold is obtained based on the maximum difference and the distance between the second pixel and the pixel 16 corresponding to the maximum difference.

[0183] The contrast between the second pixel and the pixel 16 corresponding to the maximum difference between the second pixel and the maximum difference is obtained.

[0184] The number of groups corresponding to when the perceptible threshold is greater than or equal to the contrast is determined as the first group number N for the white light emission time of the second pixel and the remaining pixels 16.

[0185] This reduces the amount of computation and improves efficiency.

[0186] Specifically, in this embodiment, all maximum differences corresponding to all pixels 16 are first obtained, then the largest maximum difference among all maximum differences is obtained, the corresponding perceptible threshold is calculated using the largest maximum difference, and the corresponding contrast is calculated using the brightness of the second pixel and the brightness of the pixel 16 corresponding to the largest maximum difference.

[0187] Specifically, initially, there is no grouping, meaning the number of the first group is 1. If the perceptibility threshold corresponding to the second pixel is less than the contrast, the number of the first group is increased by 1, meaning there are more first groups. A new time frequency and perceptibility threshold are calculated until the perceptibility threshold is greater than or equal to the contrast. Thus, the number of groups corresponding to when the perceptibility threshold is greater than or equal to the contrast can be determined as the number N of the first group for the white light emission time of the second pixel and the remaining pixels 16, thereby obtaining the number N of the first group for all pixels 16.

[0188] In this embodiment, the number N of the first group is the same for all pixels 16.

[0189] In some embodiments, the processing module 14 includes a grouping scheme control module 28, which is configured to:

[0190] Based on the number N of the first group of white light emission time for each pixel 16 and the duty cycle of each pixel 16, the interval time between two adjacent emission times is obtained. The start time of the first emission time is the start time of each frame, and the length of the N emission times is the same.

[0191] The start time of the remaining emission time is obtained based on the interval time.

[0192] Therefore, the N emission times can be configured.

[0193] Specifically, please combine Figure 4 N=2, meaning the first group of white light emission time is 2, and the two emission times are of equal length. That is, within one frame, the white light emission time is divided into two groups, and each pixel 16 emits light for two emission times within one frame. The start time of the first emission time W1 is the start time of each frame. The interval T between the second emission time W2 and the first emission time W1 is determined based on the number of the first group N of white light emission time for each pixel 16 and the duty cycle of each pixel 16.

[0194] Please combine Figure 5 N=3, meaning the first group of white light emission time is 3, and the three emission times are of equal length. That is, within one frame, the white light emission time is divided into 3 groups, and each pixel 16 is controlled to emit light for 3 emission times within one frame. The start time of the first emission time W1 is the start time of each frame. The interval T between the second emission time W2 and the first emission time W1, and the interval T between the third emission time W3 and the second emission time W2, are determined based on the first group N of white light emission time for each pixel 16 and the duty cycle of the control signal for each pixel 16.

[0195] Optionally, the interval time = 1 / frame rate × duty cycle / number of first packets.

[0196] In some embodiments, the display module 100 includes a driving module 24 electrically connected to the display panel 12, and the driving module 24 includes a first counter and a second counter.

[0197] The second counter is configured to count the number of groups of light emission time;

[0198] The first counter is configured to generate grayscale counting information, which is used to control the start and end points of the emission time. When the first counter completes the grayscale counting of one emission time, the second counter increments the count of the number of emission time groups until the count of the emission time by the second counter is equal to the number of the first group of emission time groups within one frame.

[0199] Therefore, the first and second counters can be used to control each pixel 16 to emit light during N light-emitting times.

[0200] Specifically, the first counter can be a gamma counter. The first counter counts a total of 2. J -1, J can refer to the number of bits used in the image grayscale encoding. In one example, J = 8. The second counter can be a frame counter.

[0201] The first and second counters can jointly generate corresponding control signals. Specifically, the number of emission times can be provided by the grouping scheme control module 28 as a grouping quantity configuration signal and sent to the second counter. The second counter can receive the grouping quantity configuration signal and use it for counting the number of groups. The first counter is used to generate grayscale counting information, which is used to control the start time (start time) and end time (end time) of the emission time.

[0202] The duration of each grayscale illumination requires the generation of a pulse width modulation (PWM) signal (illumination signal) using a first counter and a second counter. A high level indicates illumination, and a low level indicates de-illumination. The width of the high level determines the duration of the illumination. Please refer to... Figure 4 and Figure 7 The count of the second counter shows that the white light emission time is divided into two groups, i.e., N=2.

[0203] Grayscale count information can be used to control the start and end points of the emission time. Specifically, in one implementation, please refer to... Figure 7For the first emission time, when the grayscale signal received by the first counter is 3, the first counter can emit light on grayscale levels whose grayscale count result is less than 3, emitting light on grayscale levels 0-2. The emission time starts at grayscale level 0 and ends at grayscale level 2. The pulse width of PWM_EM corresponds to the length of grayscale levels 0-2. For the second emission time, when the grayscale signal received by the first counter is 3, the first counter can emit light on grayscale levels whose grayscale count result is less than 3, emitting light on grayscale levels 0-2. The emission time starts at grayscale level 0 and ends at grayscale level 2. The pulse width of PWM_EM corresponds to the length of grayscale levels 0-2, thus controlling the start and end points of the emission time.

[0204] After the first counter completes grayscale counting for one illumination time, the second counter increments the count of the number of groups for that illumination time and begins counting the next group. Within each group, the first counter increments from 0 to 2. J -1 count.

[0205] Optionally, the first counter and the second counter can be integrated inside the driving module 24, or they can be located in the peripheral circuit of the two-dimensional array composed of multiple pixels 16.

[0206] Please combine Figure 8 The present invention provides a control method for a display module 100, the display module 100 including a display panel 12, the display panel 12 including a plurality of pixels 16;

[0207] Control methods include:

[0208] 01. Obtain the current average brightness distribution of the display panel 12;

[0209] 03. Based on the current average brightness distribution of the display panel 12, determine the number N of the first group of white light emission time for each pixel 16 within one frame, where N is a natural number greater than or equal to 2.

[0210] 05, control each pixel 16 to emit light in N light-emitting times within one frame.

[0211] In some implementations, step 03 includes:

[0212] Get the preset number of groups A corresponding to the attributes of the display panel 12 within one frame time, and get the second number of groups C determined according to the current average brightness distribution of the display panel 12 within one frame time.

[0213] The smaller of A and C is used to determine the number of the first group, N.

[0214] In some embodiments, obtaining the current average brightness distribution of the display panel 12 includes:

[0215] Controls all pixels 16 of the display panel 12 to emit light;

[0216] Detect the luminous brightness of all pixels 16 on the display panel 12;

[0217] The current average brightness distribution of the display panel 12 is determined based on the luminance of each pixel 16 of the display panel 12.

[0218] In some embodiments, determining the current average brightness distribution of the display panel 12 based on the luminance of each pixel 16 of the display panel 12 includes:

[0219] Based on the resolution of the display panel 12 and the luminance of all pixels 16 of the display panel 12, obtain the two-dimensional luminance matrix of the display panel 12;

[0220] The average current brightness distribution of the display panel 12 is obtained based on the two-dimensional brightness matrix of the display panel 12.

[0221] In some implementations, step 03 includes:

[0222] Based on the brightness of each pixel 16 and the average brightness distribution of the display panel 12, the compensated emission time of each pixel 16 is obtained.

[0223] Obtain the maximum difference in emissivity time between each pixel 16 and its surrounding pixels 16 after compensation;

[0224] The perceptible threshold is obtained based on the maximum difference and the distance between each pixel 16 and the pixel 16 corresponding to the maximum difference.

[0225] The contrast ratio of each pixel 16 to the pixel 16 corresponding to the maximum difference is obtained based on the brightness of each pixel 16 and the brightness of the pixel 16 corresponding to the maximum difference.

[0226] The number of groups corresponding to the time when the perceptible threshold is greater than or equal to the contrast is determined as the first number of groups N for the white light emission time of each pixel 16.

[0227] In some implementations, step 03 includes:

[0228] The perceptible threshold and contrast of the current pixel 16 are obtained based on the number of the first group of the first pixel and the maximum difference and distance corresponding to the current pixel 16.

[0229] When the perceptible threshold corresponding to the current pixel 16 is greater than or equal to the corresponding contrast, the number of groups for the current pixel 16 is determined to be the number of groups for the first pixel.

[0230] When the perceptible threshold corresponding to the current pixel 16 is less than the corresponding contrast, the number of groups is increased based on the number of groups in the first pixel until the perceptible threshold corresponding to the current pixel 16 is greater than or equal to the corresponding contrast.

[0231] In some implementations, step 03 includes:

[0232] Based on the brightness of each pixel 16 and the average brightness distribution of the current display panel 12, obtain the compensated light emission time of each pixel 16;

[0233] Obtain the maximum difference in the compensated emission time between each pixel 16 and its surrounding pixels 16 to obtain all the maximum differences corresponding to all pixels 16;

[0234] Obtain the second pixel, which is pixel 16, corresponding to the largest maximum difference among all maximum differences;

[0235] The perceptible threshold is obtained based on the maximum difference and the distance between the second pixel and the pixel 16 corresponding to the maximum difference.

[0236] The contrast between the second pixel and the pixel 16 corresponding to the maximum difference between the second pixel and the maximum difference is obtained.

[0237] The number of groups corresponding to when the perceptible threshold is greater than or equal to the contrast is determined as the first group number N for the white light emission time of the second pixel and the remaining pixels 16.

[0238] In some implementations, the detection threshold is positively correlated with the time frequency, and the time frequency is positively correlated with N.

[0239] In some implementations, when the lengths of the N emission times are different, the time frequency is the minimum of all time frequencies corresponding to the N emission times.

[0240] In some implementations, step 03 includes:

[0241] Based on the number N of the first group of white light emission time for each pixel 16 and the duty cycle of each pixel 16, the interval time between two adjacent emission times is obtained. The start time of the first emission time is the start time of each frame, and the length of the N emission times is the same.

[0242] The start time of the remaining emission time is obtained based on the interval time.

[0243] In some embodiments, the display module 100 includes a first counter and a second counter;

[0244] Control methods include:

[0245] The second counter counts the number of groups of light emission time;

[0246] The first counter generates grayscale counting information, which is used to control the start and end points of the emission time. After the first counter completes the grayscale counting of one emission time, the second counter increments the count of the number of emission time groups by one, until the count of the emission time by the second counter is equal to the number of the first group of emission time groups within one frame.

[0247] In some implementations, the duration of the emission time is determined by the pulse width modulation signal of each pixel 16.

[0248] The present invention provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the control method of any of the above embodiments.

[0249] Specifically, in one embodiment, the control method implemented when the computer program is executed by the processor includes:

[0250] 01. Obtain the current average brightness distribution of the display panel 12;

[0251] 03. Based on the current average brightness distribution of the display panel 12, determine the number N of the first group of white light emission time for each pixel 16 within one frame, where N is a natural number greater than or equal to 2.

[0252] 05, control each pixel 16 to emit light in N light-emitting times within one frame.

[0253] An embodiment of the present invention provides a display device including the display module 100 of any of the above embodiments.

[0254] In the above-described control method, computer-readable storage medium, and display device, the first group number N of white light emission time for each pixel 16 within a frame time can be determined based on the current average brightness distribution of the display panel 12, and each pixel 16 can be controlled to emit light in N emission times within a frame time. This increases the frequency of white light emission time within a frame time, ensures phase synchronization of emission between pixels 16, and thereby reduces or avoids instantaneous noise to a certain extent, reduces noise in the time domain, and improves the user's visual experience.

[0255] Specifically, the display device includes, but is not limited to, display devices employing digital modulation technology such as Micro LED display devices, DLP display devices, LCoS display devices, and Micro OLED display devices. The display device can be applied to, but is not limited to, AR / VR devices.

[0256] It should be noted that the above explanation of the implementation method and beneficial effects of the display module 100 also applies to the control method, computer-readable storage medium and display device of this embodiment. To avoid redundancy, they will not be elaborated in detail here.

[0257] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0258] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, combinations, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A display module, characterized in that, include: The display panel includes a plurality of pixels; A processing module, electrically connected to the display panel, is configured as follows: Obtain the current average brightness distribution of the display panel; Based on the current average brightness distribution of the display panel, determine the first group number N of the white light emission time of each pixel within one frame, where N is a natural number greater than or equal to 2; Each pixel is controlled to emit light for N light-emitting times within one frame.

2. The display module according to claim 1, characterized in that, The processing module is configured as follows: Obtain the preset number of groups A corresponding to the attributes of the display panel within one frame time, and obtain the second number of groups C within one frame time determined according to the current average brightness distribution of the display panel; The smaller of A and C is determined as the number N of the first group.

3. The display module according to claim 1, characterized in that, The processing module includes a uniformity detection module and a driving module, wherein the driving module is configured to control the display panel to emit light; The uniformity detection module is configured to detect the luminous brightness of all pixels on the display panel; The average current brightness distribution of the display panel is determined based on the luminance of each pixel of the display panel.

4. The display module according to claim 3, characterized in that, The uniformity detection module includes a data processing module, which is configured as follows: Based on the resolution of the display panel and the luminance of all pixels of the display panel, obtain the two-dimensional luminance matrix of the display panel; The average current brightness distribution of the display panel is obtained based on the two-dimensional brightness matrix of the display panel.

5. The display module according to claim 4, characterized in that, The processing module includes a grouping scheme control module, which is electrically connected to the uniformity detection module. The grouping scheme control module is configured as follows: The compensated emission time of each pixel is obtained based on the brightness of each pixel and the average current brightness distribution of the display panel. Obtain the maximum difference in emissivity time between each pixel and its surrounding pixels after compensation; A perceptible threshold is obtained based on the maximum difference and the distance between each pixel and the pixel corresponding to the maximum difference. The contrast ratio between each pixel and the pixel corresponding to the maximum difference is obtained based on the brightness of each pixel and the brightness of the pixel corresponding to the maximum difference. The number of groups corresponding to when the perceptible threshold is greater than or equal to the contrast is determined as the first group number N of the white light emission time of each pixel.

6. The display module according to claim 5, characterized in that, The grouping scheme control module is configured as follows: The perceptible threshold and contrast of the current pixel are obtained based on the number of the first group of the first pixel, the maximum difference and distance corresponding to the current pixel; When the perceptible threshold corresponding to the current pixel is greater than or equal to the corresponding contrast, the number of groups of the current pixel is determined to be the number of groups of the first pixel. When the perceptible threshold corresponding to the current pixel is less than the corresponding contrast, the number of groups is increased based on the first group number of the first pixel until the perceptible threshold corresponding to the current pixel is greater than or equal to the corresponding contrast.

7. The display module according to claim 4, characterized in that, The processing module includes a grouping scheme control module, which is electrically connected to the uniformity detection module. The grouping scheme control module is configured as follows: The compensated emission time of each pixel is obtained based on the brightness of each pixel and the average current brightness distribution of the display panel. Obtain the maximum difference between the compensated emission time of each pixel and its surrounding pixels to obtain all the maximum differences for all pixels; Obtain the second pixel, which is the pixel corresponding to the largest maximum difference among all maximum differences; The perceptible threshold is obtained based on the maximum difference and the distance between the second pixel and the pixel corresponding to the maximum difference. The contrast ratio between the second pixel and the pixel corresponding to the maximum difference is obtained based on the brightness of the second pixel and the brightness of the pixel corresponding to the maximum difference. The number of groups corresponding to when the perceptible threshold is greater than or equal to the contrast is determined as the first group number N of the white light emission time of the second pixel and the remaining pixels.

8. The display module according to any one of claims 5 to 7, characterized in that, The detectable threshold is positively correlated with the time frequency, and the time frequency is positively correlated with N.

9. The display module according to claim 8, characterized in that, When the durations of the N emission times are different, the time frequency is the minimum value of all time frequencies corresponding to the N emission times.

10. The display module according to claim 1, characterized in that, The processing module includes a grouping scheme control module, which is configured as follows: Based on the first grouping number N of the white light emission time of each pixel and the duty cycle of each pixel, the interval time between two adjacent emission times is obtained. The start time of the first emission time is the start time of each frame, and the length of the N emission times is the same. The start time of the remaining emission time is obtained based on the interval.

11. The display module according to claim 1, characterized in that, The display module includes a driving module, which is electrically connected to the display panel. The driving module includes a first counter and a second counter. The second counter is configured to count the number of groups of the emission time; The first counter is configured to generate grayscale counting information, which is used to control the start and end points of the emission time. When the first counter completes the grayscale counting of one emission time, the second counter increments the count of the number of groups of the emission time by one until the count of the emission time by the second counter is equal to the first group of the emission time within one frame.

12. The display module according to any one of claims 1-11, characterized in that, The duration of the light emission is determined by the pulse width modulation signal of each pixel.

13. A control method for a display module, characterized in that, The display module includes a display panel, and the display panel includes multiple pixels; The control method includes: Obtain the current average brightness distribution of the display panel; Based on the current average brightness distribution of the display panel, determine the first group number N of the white light emission time of each pixel within one frame, where N is a natural number greater than or equal to 2; Each pixel is controlled to emit light for N light-emitting times within one frame.

14. The control method according to claim 13, characterized in that, Based on the current average brightness distribution of the display panel, the number N of the first group of white light emission times for each pixel within one frame time is determined as follows: Obtain the preset number of groups A corresponding to the attributes of the display panel within one frame time, and obtain the second number of groups C within one frame time determined according to the current average brightness distribution of the display panel; The smaller of A and C is determined as the number N of the first group.

15. The control method according to claim 13, characterized in that, Obtaining the current average brightness distribution of the display panel includes: Control all pixels of the display panel to emit light; Detect the luminous brightness of all pixels on the display panel; The average current brightness distribution of the display panel is determined based on the luminance of each pixel of the display panel.

16. The control method according to claim 15, characterized in that, Determining the current average brightness distribution of the display panel based on the luminance of each pixel includes: Based on the resolution of the display panel and the luminance of all pixels of the display panel, obtain the two-dimensional luminance matrix of the display panel; The average current brightness distribution of the display panel is obtained based on the two-dimensional brightness matrix of the display panel.

17. The control method according to claim 16, characterized in that, Based on the current average brightness distribution of the display panel, the number N of the first group of white light emission times for each pixel within one frame time is determined as follows: The compensated emission time of each pixel is obtained based on the brightness of each pixel and the average brightness distribution of the display panel. Obtain the maximum difference in emissivity time between each pixel and its surrounding pixels after compensation; A perceptible threshold is obtained based on the maximum difference and the distance between each pixel and the pixel corresponding to the maximum difference. The contrast ratio between each pixel and the pixel corresponding to the maximum difference is obtained based on the brightness of each pixel and the brightness of the pixel corresponding to the maximum difference. The number of groups corresponding to when the perceptible threshold is greater than or equal to the contrast is determined as the first group number N of the white light emission time of each pixel.

18. The control method according to claim 17, characterized in that, Based on the current average brightness distribution of the display panel, the number N of the first group of white light emission times for each pixel within one frame time is determined as follows: The perceptible threshold and contrast of the current pixel are obtained based on the number of the first group of the first pixel, the maximum difference and distance corresponding to the current pixel; When the perceptible threshold corresponding to the current pixel is greater than or equal to the corresponding contrast, the number of groups of the current pixel is determined to be the number of groups of the first pixel. When the perceptible threshold corresponding to the current pixel is less than the corresponding contrast, the number of groups is increased based on the first group number of the first pixel until the perceptible threshold corresponding to the current pixel is greater than or equal to the corresponding contrast.

19. The control method according to claim 16, characterized in that, Based on the current average brightness distribution of the display panel, the number N of the first group of white light emission times for each pixel within one frame time is determined as follows: The compensated emission time of each pixel is obtained based on the brightness of each pixel and the average current brightness distribution of the display panel. Obtain the maximum difference between the compensated emission time of each pixel and its surrounding pixels to obtain all the maximum differences for all pixels; Obtain the second pixel, which is the pixel corresponding to the largest maximum difference among all maximum differences; The perceptible threshold is obtained based on the maximum difference and the distance between the second pixel and the pixel corresponding to the maximum difference. The contrast ratio between the second pixel and the pixel corresponding to the maximum difference is obtained based on the brightness of the second pixel and the brightness of the pixel corresponding to the maximum difference. The number of groups corresponding to when the perceptible threshold is greater than or equal to the contrast is determined as the first group number N of the white light emission time of the second pixel and the remaining pixels.

20. The control method according to any one of claims 17-19, characterized in that, The detectable threshold is positively correlated with the time frequency, and the time frequency is positively correlated with N.

21. The control method according to claim 20, characterized in that, When the durations of the N emission times are different, the time frequency is the minimum value of all time frequencies corresponding to the N emission times.

22. The control method according to claim 13, characterized in that, Controlling each pixel to emit light in N light-emitting intervals within one frame includes: Based on the first grouping number N of the white light emission time of each pixel and the duty cycle of each pixel, the interval time between two adjacent emission times is obtained. The start time of the first emission time is the start time of each frame, and the length of the N emission times is the same. The start time of the remaining emission time is obtained based on the interval.

23. The control method according to claim 13, characterized in that, The display module includes a first counter and a second counter; The control method includes: The second counter counts the number of groups of the emission time; The first counter generates grayscale counting information, which is used to control the start and end points of the emission time. When the first counter completes the grayscale counting of one emission time, the second counter increments the count of the number of groups of the emission time by one, until the count of the emission time by the second counter is equal to the first group of the emission time within one frame.

24. The control method according to any one of claims 13-23, characterized in that, The duration of the light emission is determined by the pulse width modulation signal of each pixel.

25. A computer-readable storage medium, characterized in that, A computer program is stored on the computer-readable storage medium, which, when executed by a processor, implements the control method according to any one of claims 13-24.

26. A display device, characterized in that, Includes the display module as described in any one of claims 1-12.

Images