Display module, control method, storage medium, and display device

Abstract

Disclosed are a display module (100), a control method, a storage medium, and a display device. The display module (100) comprises: a light-emitting area (12), wherein the light-emitting area (12) comprises a plurality of pixels (16), and each pixel (16) comprises a red light-emitting member (18), a green light-emitting member (20), and a blue light-emitting member (22); and a control module (14), wherein the control module (14) is electrically connected to the light-emitting area (12), and the control module (14) is configured to: within one frame time, adjust the start point and the end point of the light-emitting time of a light-emitting member of each color, so that the phases of the light-emitting intervals of red light, green light, and blue light in time sequence are relatively matched, so as to avoid or reduce color breakup.

Description

Display module, control method, storage medium and display device

[0001] Priority information

[0002] This application claims priority to and the benefit of Chinese Patent Application No. 202411120470.1 and 202411116808.6, filed on August 14, 2024, in the China National Intellectual Property Office, and is incorporated herein by reference in its entirety as if fully copied herein. TECHNICAL FIELD

[0003] The present application relates to the technical field of pixel driving, and in particular, to a display module, a control method, a storage medium and a display device. BACKGROUND

[0004] In micro display technology, pulse width modulation (PWM) is mostly used to control the light source (screen) in a digital modulation manner. However, when using a head-mounted display, due to frequent and rapid movement of eyeballs during use of the device, corresponding displacement of the retina and the screen occurs. This causes the light modulation scheme of the screen in the time domain to form defects (artifacts) in the spatial domain on the retina, resulting in a color break up phenomenon. SUMMARY

[0005] The embodiments of the present application provide a display module, a control method, a storage medium and a display device to solve at least one of the above technical problems.

[0006] In a first aspect, a display module provided by the embodiments of the present application includes:

[0007] A light emitting area, the light emitting area including a plurality of pixels, each pixel including a red light emitting element, a green light emitting element and a blue light emitting element;

[0008] A control module, the control module being electrically connected to the light emitting area, the control module being configured to adjust a start point and an end point of a light emitting time of each color light emitting element within a frame time, so that phases of light emitting areas of red light, green light and blue light are relatively matched in time sequence to avoid or alleviate a color break up phenomenon.

[0009] In the above display module, the control module adjusts the start point and the end point of the light emitting time of each color light emitting element within a frame time, so that the phases of the light emitting areas of the red light, the green light and the blue light are relatively matched in time sequence to avoid or alleviate the color break up phenomenon, thereby optimizing the display effect to a certain extent.

[0010] In some embodiments, the start and end of the light emitting time of the light emitting component with the shortest light emitting time are adjusted so that the phases of the light emitting intervals of red, green and blue light are relatively matched in time sequence within a frame time.

[0011] In some embodiments, the start of the light emitting time of the light emitting component with the shortest light emitting time is staggered with the start of the light emitting time of the remaining light emitting components within a frame time.

[0012] In some embodiments, the start and end of the light emitting time of the light emitting component with the shortest light emitting time are adjusted so that the light emitting time of the light emitting component with the shortest light emitting time is aligned with the middle of the light emitting time of the remaining light emitting components, and the start of the light emitting time of the light emitting component with the shortest light emitting time is staggered with the start of the light emitting time of the remaining light emitting components within a frame time.

[0013] In some embodiments, the control module comprises a first counter configured to generate gray scale count information of the light emitting component with the shortest light emitting time, the gray scale count information being used to adjust the start and end of the light emitting time of the light emitting component with the shortest light emitting time so that the light emitting time of the light emitting component with the shortest light emitting time is aligned with the middle of the light emitting time of the remaining light emitting components.

[0014] In some embodiments, the adjustment amount of the start of the light emitting time of the light emitting component with the shortest light emitting time is t1, and t1 satisfies 0 < t1 ≤ (D1-D2) / 2, where D1 is the duty cycle of the light emitting component with the longest light emitting time, and D2 is the duty cycle of the light emitting component with the shortest light emitting time.

[0015] In some embodiments, the start and end of the light emitting time of the three light emitting components are adjusted so that the phases of the light emitting intervals of red, green and blue light are relatively matched in time sequence within a frame time.

[0016] In some embodiments, the start and end of the light emitting time of the three light emitting components are adjusted so that the light emitting time of the light emitting component with the shortest light emitting time is aligned with the middle of the light emitting time of the remaining light emitting components within a frame time.

[0017] In some embodiments, the light emitting time of each color light emitting component is grouped, and the start and end of the light emitting time of each color light emitting component are adjusted within a frame time.

[0018] In some embodiments, the light emitting time of the light emitting component with the shortest light emitting time is grouped to form multiple light emitting sub-times so that the phases of the light emitting intervals of red, green and blue light are relatively matched in time sequence within a frame time.

[0019] In some embodiments, the light emitting time of the light emitting component with the shortest light emitting time is evenly divided into at least two light emitting sub-times within a frame time.

[0020] In some embodiments, the control module comprises a first counter and a second counter;

[0021] The second counter is configured to count the number of the light emitting sub-time;

[0022] The first counter is configured to generate gray scale count information, and when the first counter completes the gray scale count of one light emitting sub-time, the second counter counts up one for the number of the light emitting sub-time, until the count of the second counter for the light emitting sub-time equals the total number of the light emitting sub-time in one frame time.

[0023] In some embodiments, the light emitting time of the light emitting member with the shortest light emitting time in one frame time is not evenly divided into at least two light emitting sub-time.

[0024] In some embodiments, the light emitting time of the remaining light emitting members in one frame time is evenly or unevenly divided into at least two light emitting sub-time.

[0025] In some embodiments, the multiple light emitting sub-time of the light emitting member with the shortest light emitting time in one frame time is evenly distributed.

[0026] In some embodiments, in the multiple light emitting sub-time of the light emitting member with the shortest light emitting time in one frame time, the start point of the first light emitting sub-time is the same as the start point of the light emitting time of the remaining light emitting members, and the end point of the last light emitting sub-time is the same as the end point of the light emitting time of the remaining light emitting members.

[0027] In some embodiments, the control module comprises a first counter and a second counter;

[0028] The second counter is configured to count the number of the light emitting sub-time;

[0029] The first counter is configured to generate gray scale count information, and when the first counter completes the gray scale count of one light emitting sub-time, the second counter counts up one for the number of the light emitting sub-time, until the count of the second counter for the light emitting sub-time equals the total number of the light emitting sub-time in one frame time.

[0030] The first counter is configured to generate gray scale count information, and when the first counter completes the gray scale count of one light emitting sub-time, the second counter counts up one for the number of the light emitting sub-time, until the count of the second counter for the light emitting sub-time equals the total number of the light emitting sub-time in one frame time.

[0031] In some embodiments, the start point of the light emitting sub-time of the light emitting component with the shortest light emitting time is adjusted by an amount t2, t2 satisfies 0 < t2 ≤ (D1-D2) / 2, where D1 is the duty cycle of the light emitting component with the longest light emitting time, and D2 is the duty cycle of the light emitting component with the shortest light emitting time, and the end point of the last light emitting sub-time is not later than the end point of the light emitting time of the light emitting component with the longest light emitting time.

[0032] In some embodiments, the light emitting region includes a left eye light emitting region and a right eye light emitting region, and the control module is configured to adjust the start point and the end point of the light emitting time of each color light emitting component of the left eye light emitting region and / or adjust the start point and the end point of the light emitting time of each color light emitting component of the right eye light emitting region, so that the phases of the light emitting regions of red light, green light and blue light in time sequence are relatively matched.

[0033] In some embodiments, the start point and the end point of the light emitting time of the light emitting component with the shortest light emitting time of the left eye light emitting region and / or the start point and the end point of the light emitting time of the light emitting component with the shortest light emitting time of the right eye light emitting region are adjusted, so that the start point of the light emitting time of the light emitting component with the shortest light emitting time of the left eye light emitting region is staggered with the start point of the light emitting time of the light emitting component with the shortest light emitting time of the right eye light emitting region.

[0034] In some embodiments, the light emitting time of the light emitting component with the shortest light emitting time of the left eye light emitting region is divided into at least two light emitting sub-times, and / or the light emitting time of the light emitting component with the shortest light emitting time of the right eye light emitting region is divided into at least two light emitting sub-times.

[0035] In some embodiments, the light emitting time of the light emitting component with the shortest light emitting time of one of the left eye light emitting region and the right eye light emitting region is divided into at least two light emitting sub-times, and the start point of the light emitting time of the light emitting component with the shortest light emitting time of the other of the left eye light emitting region and the right eye light emitting region is staggered with the start point of the light emitting time of the remaining light emitting components.

[0036] In some embodiments, the red light emitting component, the green light emitting component and the blue light emitting component are modulated in brightness by one or more PWM pulse forms, at least two of the corresponding pulse start points of the red light emitting component, the green light emitting component and the blue light emitting component are different, and / or at least two of the pulse end points are different, so as to achieve relatively matched phases.

[0037] In some embodiments, the display module comprises a sensor electrically connected to the control module, the sensor is configured to detect the environmental parameter, and the control module is configured to adjust the start point and the end point of the light emitting time of each color light emitting element according to the environmental parameter, so that the phases of the light emitting intervals of red light, green light and blue light are relatively matched in time sequence, thereby avoiding or reducing the color breakup phenomenon. The sensor comprises at least one of a temperature sensor and an ambient light sensor.

[0038] In a second aspect, embodiments of the present application provide a control method of a display module, the display module comprising:

[0039] a light emitting area comprising a plurality of pixels, each pixel comprising a red light emitting element, a green light emitting element and a blue light emitting element;

[0040] The control method comprises:

[0041] adjusting the start point and the end point of the light emitting time of each color light emitting element within a frame time, so that the phases of the light emitting intervals of red light, green light and blue light are relatively matched in time sequence, thereby avoiding or reducing the color breakup phenomenon.

[0042] In some embodiments, the start point and the end point of the light emitting time of the light emitting element with the shortest light emitting time are adjusted within a frame time, so that the phases of the light emitting intervals of red light, green light and blue light are relatively matched in time sequence.

[0043] In some embodiments, the start point of the light emitting time of the light emitting element with the shortest light emitting time is staggered with the start point of the light emitting time of the remaining light emitting elements within a frame time.

[0044] In some embodiments, the start point and the end point of the light emitting time of the light emitting element with the shortest light emitting time are adjusted within a frame time, so that the light emitting time of the light emitting element with the shortest light emitting time is aligned with the middle of the light emitting time of the remaining light emitting elements, and the start point of the light emitting time of the light emitting element with the shortest light emitting time is staggered with the start point of the light emitting time of the remaining light emitting elements.

[0045] In some embodiments, the display module comprises a first counter, and the control method comprises: the first counter generates gray scale count information of the light emitting element with the shortest light emitting time, and the gray scale count information is used to adjust the start point and the end point of the light emitting time of the light emitting element with the shortest light emitting time, so that the light emitting time of the light emitting element with the shortest light emitting time is aligned with the middle of the light emitting time of the remaining light emitting elements.

[0046] In some embodiments, the adjustment amount of the start point of the light emitting time of the light emitting element with the shortest light emitting time is t1, and t1 satisfies 0 t1≤(D1-D2) / 2, where D1 is the duty cycle of the light emitting element with the longest light emitting time, and D2 is the duty cycle of the light emitting element with the shortest light emitting time.

[0047] In some embodiments, the start and end of the light emitting time of the three light emitting pieces are adjusted so that the phases of the light emitting intervals of red, green and blue light are relatively matched in time sequence within a frame time.

[0048] In some embodiments, the start and end of the light emitting time of the three light emitting pieces are adjusted so that the light emitting time of the light emitting piece with the shortest light emitting time is aligned with the middle of the light emitting time of the remaining light emitting pieces within a frame time.

[0049] In some embodiments, the start and end of the light emitting time of each color light emitting piece are adjusted by grouping the light emitting time of each color light emitting piece.

[0050] In some embodiments, the light emitting time of the light emitting piece with the shortest light emitting time is grouped to form multiple light emitting sub-times so that the phases of the light emitting intervals of red, green and blue light are relatively matched in time sequence within a frame time.

[0051] In some embodiments, the light emitting time of the light emitting piece with the shortest light emitting time is evenly divided into at least two light emitting sub-times within a frame time.

[0052] In some embodiments, the display module comprises a first counter and a second counter.

[0053] The control method comprises that the second counter counts the number of light emitting sub-times.

[0054] The first counter generates gray scale count information, and when the first counter completes the gray scale count of a light emitting sub-time, the second counter adds one to the count of the number of light emitting sub-times, until the count of the second counter for the light emitting sub-times is equal to the total number of light emitting sub-times within a frame time.

[0055] In some embodiments, the light emitting time of the light emitting piece with the shortest light emitting time is not evenly divided into at least two light emitting sub-times within a frame time.

[0056] In some embodiments, the light emitting time of the remaining light emitting pieces is evenly or unevenly divided into at least two light emitting sub-times within a frame time.

[0057] In some embodiments, the multiple light emitting sub-times of the light emitting piece with the shortest light emitting time are evenly distributed within a frame time.

[0058] In some embodiments, in the multiple light emitting sub-periods of the light emitting component with the shortest light emitting time within a frame time, the start of the first light emitting sub-period is the same as the start of the light emitting time of the rest of the light emitting components, and the end of the last light emitting sub-period is the same as the end of the light emitting time of the rest of the light emitting components.

[0059] In some embodiments, the display module comprises a first counter and a second counter.

[0060] The control method comprises that the second counter counts the number of the light emitting sub-periods.

[0061] The first counter generates gray scale count information, which is used to make the start of the first light emitting sub-period the same as the start of the light emitting time of the rest of the light emitting components, and the end of the last light emitting sub-period the same as the end of the light emitting time of the rest of the light emitting components.

[0062] When the first counter completes the gray scale count of one light emitting sub-period, the second counter counts the number of the light emitting sub-periods plus one, until the count of the second counter equals the total number of the light emitting sub-periods within a frame time.

[0063] In some embodiments, in the multiple light emitting sub-periods of the light emitting component with the shortest light emitting time within a frame time, the start of the light emitting sub-period is adjusted by an amount t2, t2 satisfies 0 < t2 ≤ (D1-D2) / 2, wherein D1 is the duty cycle of the light emitting component with the longest light emitting time, D2 is the duty cycle of the light emitting component with the shortest light emitting time, and the end of the last light emitting sub-period is not later than the end of the light emitting time of the light emitting component with the longest light emitting time.

[0064] In some embodiments, the light emitting area comprises a left eye light emitting area and a right eye light emitting area, and the control method comprises that, within a frame time, the start and end of the light emitting time of each color light emitting component of the left eye light emitting area is adjusted, and / or the start and end of the light emitting time of each color light emitting component of the right eye light emitting area is adjusted, so that the phase of the light emitting area of red light, green light and blue light in time sequence is relatively matched.

[0065] In some embodiments, the start and end of the light emitting time of the light emitting component with the shortest light emitting time of the left eye light emitting area is adjusted, and / or the start and end of the light emitting time of the light emitting component with the shortest light emitting time of the right eye light emitting area is adjusted, so that the start of the light emitting time of the light emitting component with the shortest light emitting time of the left eye light emitting area is staggered with the start of the light emitting time of the light emitting component with the shortest light emitting time of the right eye light emitting area.

[0066] In some embodiments, the light emitting time of the light emitting element with the shortest light emitting time in the left eye light emitting area is divided into at least two light emitting sub-times, and / or the light emitting time of the light emitting element with the shortest light emitting time in the right eye light emitting area is divided into at least two light emitting sub-times.

[0067] In some embodiments, the light emitting time of the light emitting element with the shortest light emitting time in one of the left eye light emitting area and the right eye light emitting area is divided into at least two light emitting sub-times, and the starting point of the light emitting time of the light emitting element with the shortest light emitting time in the other of the left eye light emitting area and the right eye light emitting area is staggered with the starting point of the light emitting time of the remaining light emitting elements.

[0068] In some embodiments, the red light emitting element, the green light emitting element and the blue light emitting element are modulated in brightness by one or more PWM pulse forms, and at least one of the corresponding pulse starting points and ending points of the red light emitting element, the green light emitting element and the blue light emitting element is different to achieve phase relative matching.

[0069] In some embodiments, the display module includes a sensor configured to detect the environmental parameter, the sensor including at least one of a temperature sensor and an ambient light sensor, and the control method includes:

[0070] According to the environmental parameter, the starting point and the ending point of the light emitting time of each color light emitting element are adjusted within a frame time, so that the phases of the red light, the green light and the blue light in the light emitting area are relatively matched in time sequence to avoid or alleviate the color break phenomenon.

[0071] In a third aspect, embodiments of the present application provide a computer readable storage medium having stored thereon a computer program, which, when executed by the processor, implements the steps of the control method of any of the embodiments of the second aspect.

[0072] In a fourth aspect, embodiments of the present application provide a display device including the display module of any of the embodiments of the first aspect.

[0073] In the above control method, storage medium and display device, the control module adjusts the starting point and the ending point of the light emitting time of each color light emitting element within a frame time, so that the phases of the red light, the green light and the blue light in the light emitting area are relatively matched in time sequence to avoid or alleviate the color break phenomenon, thereby optimizing the display effect to a certain extent.

[0074] In a fifth aspect, embodiments of the present application provide a display module including:

[0075] A display panel, the display panel including a plurality of pixels;

[0076] a processing module electrically connected to the display panel, the processing module being configured to:

[0077] obtain a current average brightness distribution of the display panel;

[0078] determine, according to the current average brightness distribution of the display panel, a first grouping number N of white light emitting time of each pixel in a frame time, N being a natural number greater than or equal to 2;

[0079] control each pixel to emit light in N emitting time in a frame time.

[0080] In the display module, the processing module can determine the first grouping number N of white light emitting time of each pixel in a frame time according to the current average brightness distribution of the display panel, and control each pixel to emit light in N emitting time in a frame time, so that the frequency of white light emitting time in a frame time is improved, the emitting phase of pixels is synchronized, and the instantaneous noise is reduced or avoided to a certain extent, the noise in time domain is reduced, and the visual experience of a user is improved.

[0081] In some embodiments, the processing module is configured to:

[0082] obtain a preset grouping number A in a frame time corresponding to the attribute of the display panel, and obtain a second grouping number C in a frame time determined according to the current average brightness distribution of the display panel;

[0083] determine the smaller one of A and C as the first grouping number N.

[0084] In some embodiments, the processing module includes a uniformity detection module and a driving module, and the driving module is configured to control the display panel to emit light.

[0085] The uniformity detection module is configured to detect the emitting brightness of all pixels of the display panel.

[0086] determine the current average brightness distribution of the display panel according to the emitting brightness of each pixel of the display panel.

[0087] In some embodiments, the uniformity detection module includes a data processing module, and the data processing module is configured to:

[0088] obtain a two-dimensional brightness matrix of the display panel according to the resolution of the display panel and the emitting brightness of all pixels of the display panel;

[0089] obtain the current average brightness distribution of the display panel according to the two-dimensional brightness matrix of the display panel.

[0090] In some embodiments, the processing module comprises a grouping scheme control module electrically connected to the uniformity detection module, and the grouping scheme control module is configured to:

[0091] According to the brightness of each pixel and the average value of the current brightness distribution of the display panel, the compensated light-emitting time of each pixel is obtained;

[0092] The maximum difference between the compensated light-emitting time of each pixel and the surrounding pixels is obtained;

[0093] According to the maximum difference, the distance between each pixel and the pixel corresponding to the maximum difference, and the perceptible threshold is obtained;

[0094] According to the brightness of each pixel and the brightness of the pixel corresponding to the maximum difference, the contrast between each pixel and the pixel corresponding to the maximum difference is obtained;

[0095] The first grouping number N of the white light-emitting time of each pixel is determined as the grouping number corresponding to the condition that the perceptible threshold is greater than or equal to the contrast.

[0096] In some embodiments, the grouping scheme control module is configured to:

[0097] According to the first grouping number of the first pixel, the maximum difference corresponding to the current pixel, and the distance, the perceptible threshold and the contrast corresponding to the current pixel are obtained;

[0098] When the perceptible threshold corresponding to the current pixel is greater than or equal to the corresponding contrast, the grouping number of the current pixel is determined as the first grouping number of the first pixel;

[0099] When the perceptible threshold corresponding to the current pixel is less than the corresponding contrast, the grouping number is increased based on the first grouping number of the first pixel until the perceptible threshold corresponding to the current pixel is greater than or equal to the corresponding contrast.

[0100] In some embodiments, the processing module comprises a grouping scheme control module electrically connected to the uniformity detection module, and the grouping scheme control module is configured to:

[0101] According to the brightness of each pixel and the average value of the current brightness distribution of the display panel, the compensated light-emitting time of each pixel is obtained;

[0102] The maximum difference between the compensated light-emitting time of each pixel and the surrounding pixels is obtained to obtain all the maximum differences corresponding to all the pixels;

[0103] acquire a second pixel corresponding to the maximum maximum difference value;

[0104] acquire a perceptible threshold value according to the maximum maximum difference value and the distance between the second pixel and the pixel corresponding to the maximum maximum difference value;

[0105] acquire a contrast between the second pixel and the pixel corresponding to the maximum maximum difference value according to the luminance of the second pixel and the luminance of the pixel corresponding to the maximum maximum difference value;

[0106] determine the first grouping number N of white light emitting time of the second pixel and the remaining pixels as the grouping number corresponding to the condition that the perceptible threshold value is greater than or equal to the contrast.

[0107] In some embodiments, the perceptible threshold value is positively correlated with a time frequency, and the time frequency is positively correlated with N.

[0108] In some embodiments, when the lengths of the N emitting times are different, the time frequency is the minimum value of all time frequencies corresponding to the N emitting times.

[0109] In some embodiments, the processing module comprises a grouping scheme control module configured to:

[0110] acquire an interval time between two adjacent emitting times according to the first grouping number N of white light emitting time of each pixel and the duty cycle of each pixel, the start time of the first emitting time being the start time of each frame, and the lengths of the N emitting times being the same;

[0111] acquire the start time of the remaining emitting times according to the interval time.

[0112] In some embodiments, the display module comprises a driving module electrically connected to the display panel, and the driving module comprises a first counter and a second counter.

[0113] The second counter is configured to count the grouping number of the emitting time.

[0114] The first counter is configured to generate gray scale count information for controlling the start point and end point of the emitting time, and when the first counter completes the gray scale count of one emitting time, the second counter counts the grouping number of the emitting time by one until the second counter counts the emitting time equal to the first grouping number of the emitting time in one frame time.

[0115] In some embodiments, the length of the light emitting time is determined by a pulse width modulation signal of each of the pixels.

[0116] In a sixth aspect, embodiments of the present application provide a control method of a display module, the display module comprising a display panel, the display panel comprising a plurality of pixels;

[0117] The control method comprises:

[0118] obtaining a current brightness distribution mean value of the display panel;

[0119] determining, according to the current brightness distribution mean value of the display panel, a first grouping number N of white light emitting time of each of the pixels within a frame time, N being a natural number greater than or equal to 2;

[0120] controlling each of the pixels to emit light in N light emitting times within a frame time.

[0121] In some embodiments, determining, according to the current brightness distribution mean value of the display panel, the first grouping number N of white light emitting time of each of the pixels within a frame time comprises:

[0122] obtaining a preset grouping number A within a frame time corresponding to an attribute of the display panel, and obtaining a second grouping number C within a frame time determined according to the current brightness distribution mean value of the display panel;

[0123] determining the smaller one of A and C as the first grouping number N.

[0124] In some embodiments, obtaining the current brightness distribution mean value of the display panel comprises:

[0125] controlling all the pixels of the display panel to emit light;

[0126] detecting the light emitting brightness of all the pixels of the display panel;

[0127] determining the current brightness distribution mean value of the display panel according to the light emitting brightness of each of the pixels of the display panel.

[0128] In some embodiments, determining the current brightness distribution mean value of the display panel according to the light emitting brightness of each of the pixels of the display panel comprises:

[0129] obtaining a two-dimensional brightness matrix of the display panel according to the resolution of the display panel and the light emitting brightness of all the pixels of the display panel;

[0130] obtaining the current brightness distribution mean value of the display panel according to the two-dimensional brightness matrix of the display panel.

[0131] In some embodiments, the first grouping number N of the white light emitting time of each pixel within a frame time is determined according to the current average brightness distribution of the display panel, comprising:

[0132] The compensated light emitting time of each pixel is obtained according to the brightness of each pixel and the average brightness distribution of the display panel.

[0133] The maximum difference of the compensated light emitting time between each pixel and surrounding pixels is obtained.

[0134] The perceptible threshold is obtained according to the maximum difference and the distance between each pixel and the pixel corresponding to the maximum difference.

[0135] The contrast between each pixel and the pixel corresponding to the maximum difference is obtained according to the brightness of each pixel and the brightness of the pixel corresponding to the maximum difference.

[0136] The first grouping number N of the white light emitting time of each pixel is determined as the grouping number corresponding to the condition that the perceptible threshold is greater than or equal to the contrast.

[0137] In some embodiments, the first grouping number N of the white light emitting time of each pixel within a frame time is determined according to the current average brightness distribution of the display panel, comprising:

[0138] The perceptible threshold and the contrast corresponding to the current pixel are obtained according to the first grouping number of the first pixel and the maximum difference and the distance corresponding to the current pixel.

[0139] When the perceptible threshold corresponding to the current pixel is greater than or equal to the corresponding contrast, the grouping number of the current pixel is determined as the first grouping number of the first pixel.

[0140] When the perceptible threshold corresponding to the current pixel is less than the corresponding contrast, the grouping number is increased based on the first grouping number of the first pixel until the perceptible threshold corresponding to the current pixel is greater than or equal to the corresponding contrast.

[0141] In some embodiments, the first grouping number N of the white light emitting time of each pixel within a frame time is determined according to the current average brightness distribution of the display panel, comprising:

[0142] The compensated light emitting time of each pixel is obtained according to the brightness of each pixel and the current average brightness distribution of the display panel.

[0143] The maximum difference of the compensated light emitting time between each pixel and surrounding pixels is obtained to obtain all maximum differences corresponding to all pixels.

[0144] acquire a second pixel corresponding to the maximum maximum difference value;

[0145] acquire a perceptible threshold value according to the maximum maximum difference value and the distance between the second pixel and the pixel corresponding to the maximum maximum difference value;

[0146] acquire a contrast between the second pixel and the pixel corresponding to the maximum maximum difference value according to the brightness of the second pixel and the brightness of the pixel corresponding to the maximum maximum difference value;

[0147] determine the first group number N of white light emitting time of the second pixel and the remaining pixels as the group number corresponding to the condition that the perceptible threshold value is greater than or equal to the contrast.

[0148] In some embodiments, the perceptible threshold value is positively correlated with a time frequency, and the time frequency is positively correlated with N.

[0149] In some embodiments, when the lengths of the N emitting times are different, the time frequency is the minimum value of all time frequencies corresponding to the N emitting times.

[0150] In some embodiments, the control of the emission of each pixel in a frame time according to the N emitting times comprises:

[0151] acquire an interval time between two adjacent emitting times according to the first group number N of white light emitting time of each pixel and the duty cycle of each pixel, the start time of the first emitting time is the start time of each frame, and the lengths of the N emitting times are the same;

[0152] acquire the start time of the remaining emitting times according to the interval time.

[0153] In some embodiments, the display module comprises a first counter and a second counter.

[0154] The control method comprises:

[0155] The second counter counts the group number of the emitting time;

[0156] The first counter generates gray scale count information, which is used to control the start and end points of the emitting time, and when the first counter completes the gray scale count of one emitting time, the second counter counts the group number of the emitting time by one until the count of the second counter is equal to the first group number of the emitting time in a frame time.

[0157] In some embodiments, the lengths of the emitting times are determined by the pulse width modulation signal of each pixel.

[0158] In a seventh aspect, an embodiment of the present application provides a computer readable storage medium, and the computer readable storage medium stores a computer program. The computer program is executed by a processor to implement the control method of any of the embodiments of the sixth aspect.

[0159] In an eighth aspect, an embodiment of the present application provides a display device, and the display device comprises the display module of any of the embodiments of the fifth aspect.

[0160] In the control method, the storage medium and the display device, the first grouping number N of white light emitting time of each pixel in a frame time can be determined according to the current brightness distribution mean value of the display panel, and each pixel is controlled to emit light in N emitting times in a frame time, so that the frequency of white light emitting time in a frame time is improved, the light emitting phase synchronization between pixels is ensured, and the instantaneous noise is reduced or avoided to a certain extent, the noise in the time domain is reduced, and the user's visual experience is improved.

[0161] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0162] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings.

[0163] FIG. 1 is one of the module schematic diagrams of the display module of the embodiment of the present application;

[0164] FIG. 2 is another of the module schematic diagrams of the display module of the embodiment of the present application;

[0165] FIG. 3 is a structural schematic diagram of a light emitting area of the embodiment of the present application;

[0166] FIG. 4 is a structural schematic diagram of a pixel of the embodiment of the present application;

[0167] FIG. 5 is a schematic diagram of grouping the light emitting time of the red light emitting piece of the embodiment of the present application;

[0168] FIG. 6 is a schematic diagram of the control module controlling the effective light emitting time of the red light emitting piece of the embodiment of the present application;

[0169] FIG. 7 is a schematic diagram of a light emitting pulse and a gray scale count signal of the embodiment of the present application;

[0170] FIG. 8 is a schematic diagram of the control module grouping the light emitting time of the light emitting piece of the embodiment of the present application;

[0171] Figure 9 is one of the diagrams of light emitting pulses, gray scale count signals and light emitting time count signals in the embodiment of the present application;

[0172] Figure 10 is a diagram of the control module controlling the effective light emitting time of the red light emitting element and grouping the light emitting time of the light emitting element in the embodiment of the present application;

[0173] Figure 11 is another of the diagrams of light emitting pulses, gray scale count signals and light emitting time count signals in the embodiment of the present application;

[0174] Figure 12 is a diagram of the module of the display module in the embodiment of the present application;

[0175] Figure 13 is a diagram of the control module controlling the effective light emitting time of the red light emitting element of the left eye light emitting area and the right eye light emitting area in the embodiment of the present application;

[0176] Figure 14 is a diagram of the control module grouping the light emitting time of the red light emitting element of the left eye light emitting area and the right eye light emitting area in the embodiment of the present application;

[0177] Figure 15 is a diagram of the control module grouping the light emitting time of the red light emitting element of the left eye light emitting area or the right eye light emitting area and controlling the effective light emitting time of the red light emitting element of the left eye light emitting area and the right eye light emitting area in the embodiment of the present application;

[0178] Figure 16 is a diagram of the color breakage in the related art;

[0179] Figure 17 is a diagram of the comparison of the RBG control logic in the related art and the RBG control logic in the embodiment of the present application;

[0180] Figure 1 to Figure 17 are the main element symbol explanations:

[0181] Display module 100, light emitting area 12, control module 14, pixel 16, red light emitting element 18, green light emitting element 20, blue light emitting element 22, sensor 24, light combining element 26, left eye light emitting area 28, right eye light emitting area 30.

[0182] Figure 18 is a diagram of the module of the display module in the embodiment of the present application;

[0183] Figure 19 is a diagram of the structure of the display panel in the embodiment of the present application;

[0184] Figure 20 is a diagram of the structure of the pixel in the embodiment of the present application;

[0185] Figure 21 is a diagram of the white light emitting time grouping in the embodiment of the present application;

[0186] Figure 22 is another diagram of the white light emitting time grouping in the embodiment of the present application;

[0187] FIG. 23 is another schematic diagram of a display module according to embodiments of the present application;

[0188] FIG. 24 is a diagram of a light emitting signal, a gray scale count signal and a light emitting time count signal according to embodiments of the present application;

[0189] FIG. 25 is a flow diagram of a control method of a display module according to embodiments of the present application;

[0190] FIG. 26 is a diagram of a white light emitting time according to the related art.

[0191] FIG. 18 to FIG. 26, main element symbol explanation: display module 1100, display panel 200, processing module 114, pixel 116, light emitting member 118, light combining element 120, controller 121, image processing module 122, driving module 124, uniformity detection module 126, grouping scheme control module 128, data processing module 130, brightness detection module 132, output module 134. DETAILED DESCRIPTION

[0192] The embodiments of the present application will be described in detail below with reference to the drawings, in which the same or similar components have the same or similar reference numbers throughout the several figures. The embodiments described below are exemplary and are merely intended to explain the present application, and are not to be understood as limiting the present application.

[0193] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For purposes of explanation and non- limitation, specific details of certain examples are set forth. Of course, many variations on these specific details will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other variations as well. Additionally, the disclosure provides examples of various processes and materials, but the disclosure can be applied to other processes and materials as well.

[0194] In addition, the terms "first", "second", and the like, do not denote any quantity or importance, but are used to distinguish one element from another, and the terms "first", "second", etc. can be understood as "one or more" unless otherwise specifically defined. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.

[0195] In the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0196] In the present application, unless otherwise explicitly specified and limited, "on" or "under" of a first feature to a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "over" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. "Under", "below" and "under" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0197] In the description of the present application, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected. It can be mechanical connection, or electrical connection. It can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0198] In the related art, color break up is a common visual defect. Color break up occurs when the eye moves, and the light emitted from the screen falls on different locations of the retina with the movement of the eye, resulting in defects in the originally stable image. The faster the eye moves, the more obvious the defect. The specific performance of color break up is shown in FIG. 16.

[0199] Red, blue and green three colors form white light when fused, but the duration of red light emission is short, resulting in that the duration of white light formed by the fusion of three colors is determined by the duration of red light emission, and the duration of blue-green light emission continues, which will form non-white light. The non-white light will be observed by the human eye when the eyeball moves, which is a different color relative to white light, thereby forming the so-called color break up.

[0200] The reasons for color breakup in the prior art are mainly two: 1. Most of the existing products are modulation schemes of red light, green light and blue light time sequence light emission. 2. The light emission efficiency of blue light, green light and red light is not uniform, and the light emission efficiency changes when the use conditions such as ambient temperature change. Specifically, the reason for the short red light emission time: the light emission efficiency of red light can only reach a high level under a large current. Therefore, in order to maintain the high light emission efficiency of the red light emitting element (such as LED), the red light emitting element 18 usually needs to work under a large current. However, the green light emitting element and the blue light emitting element do not have this defect, which leads to the fact that in order to maintain the D65 (D65 is the standard color temperature of white point) white point unchanged, the light emission time of red light is relatively short. The light emission efficiency of blue light, green light and red light is also affected by temperature, and when the temperature changes, the relative light emission time of red light, blue light and green light also changes. In summary, the light emission time of red light, green light and blue light is often inconsistent. The above two reasons are particularly prone to cause color breakup.

[0201] Referring to FIGS. 1-4, a display module 100 according to an embodiment of the present application includes a light emitting area 12 and a control module 14. The light emitting area 12 includes a plurality of pixels 16, each of which includes a red light emitting element 18, a green light emitting element 20 and a blue light emitting element 22. The control module 14 is electrically connected to the light emitting area 12, and the control module 14 is configured to adjust the start and end points of the light emission time of each color light emitting element within a frame time, so that the phases of the light emission intervals of red light, green light and blue light are relatively matched in time sequence to avoid or alleviate the phenomenon of color breakup.

[0202] In the display module 100 described above, the control module 14 adjusts the start and end points of the light emission time of each color light emitting element within a frame time to relatively match the phases of the light emission intervals of red light, green light and blue light in time sequence to avoid or alleviate the phenomenon of color breakup, thereby optimizing the display effect to a certain extent.

[0203] Specifically, the light emission of the red light emitting element 18, the green light emitting element 20 and the blue light emitting element 22 is usually determined by the pulse width of the control signal. Alternatively, when the control signal is at a high level, the control signal forms a pulse signal, and the pulse width is determined by the time of the high level. When the control signal is at a low level, the pulse disappears, so that when the control signal switches between high level and low level, a control waveform with a pulse is formed in time sequence. The pulse corresponds to a light emission interval in time sequence, and the light emission interval forms a light emission time in time sequence.

[0204] The phase of the light-emitting intervals of the red light, the green light and the blue light in time sequence is relatively matched, which can be understood as that the white light is formed when the red light emitting part 18, the green light emitting part 20 and the blue light emitting part 22 emit light at the same time, and in a frame time, there is at least one white light emitting time, the start point of the white light emitting time is staggered with the start point of the light-emitting time of one or two light-emitting parts, the start point of the white light emitting time is delayed, the white light emitting is delayed, thus, the light-emitting time of the continuous light emission of one light-emitting part alone or the continuous light-emitting time of the simultaneous light emission of two light-emitting parts is reduced, thereby avoiding or reducing the color breakup problem to a certain extent.

[0205] Please combine FIG. 5, in a frame time, it is assumed that the light-emitting time of the red light emitting part 18 is the shortest, the light-emitting time of the green light emitting part 20 and the blue light emitting part 22 is consistent and long, and this is taken as an example for description:

[0206] Alternatively, in FIG. 5, the light-emitting time of the red light emitting part 18 is grouped and processed into two light-emitting sub-times, which are uniformly inserted into the light-emitting time of the green light emitting part 20 and the blue light emitting part 22, thus the color breakup can be reduced.

[0207] Regarding the principle, as shown in the schematic diagram in FIG. 17. In FIG. 17, part 1 and part 2 correspond to the related art RGB (red green blue) time sequence modulation scheme. When static, the pixel displays white, and when moving, the pixel will produce color breakup. Part 3 is the scheme of an embodiment of the present application, in which the RGB emits light at the same time, the light-emitting time of the red light emitting part 18 is the shortest, the light-emitting time of the red light emitting part 18 is grouped and processed into two light-emitting sub-times, thus, in a frame time, there is a white light emitting time W2, the start point of the white light emitting time W2 is staggered with the start point of the light-emitting time of the green light emitting part and the blue light emitting part, the white light emitting time W2 is delayed, instead of being combined with the white light emitting time W1 to form a longer white light emitting time, thereby the light-emitting time of the continuous light emission of each G+B is shorter, and the color breakup phenomenon can be effectively reduced.

[0208] It should be noted that due to the inability to display color and depth, although part 3 has a mixed color of G+B, the mixed color is lighter than the mixed color of G+B of part 1 and part 2. In FIG. 17, R represents red, G represents green, B represents blue, W represents white, Y represents yellow (a mixed color of R+G), and G+B represents a mixed color of green and blue.

[0209] Root cause: The time-domain light modulation scheme of the light-emitting region 12 forms defects on the retina during rapid eye movement. In the modulation scheme of RGB timing, color breakage is extremely serious and can also occur when the eye movement speed is slow. When the RGB light-emitting pieces emit light at the same time, due to the fact that the light-emitting time of the three is not completely consistent, color breakage can still be seen during eye movement. When the scheme proposed in the present application is adopted, the light-emitting time formed by the simultaneous light emission of non-tricolor devices can be scattered, i.e., discontinuous, by changing the starting point and end point of the light-emitting of the three light-emitting devices, thereby reducing the discontinuity of the color breakage duration formed by the simultaneous light emission of non-tricolor devices, and greatly reducing the size and degree of blur caused by color breakage.

[0210] Therefore, in the embodiments of the present application, the control module 14 is configured to adjust the starting point and end point of the light-emitting time of each color light-emitting piece within one frame time, so that the light-emitting intervals of red light, green light and blue light are relatively matched in phase in time sequence, so as to avoid or alleviate the phenomenon of color breakage. It can be understood that the total length of the light-emitting time of the remaining light-emitting pieces is greater than the total length of the light-emitting time of the light-emitting piece with the shortest light-emitting time.

[0211] The embodiments of the present application are applicable to RGB three-color light-emitting panels, and are commonly used in the fields of AR (Augmented Reality, augmented reality), VR (Virtual Reality, virtual reality) and MR (Mixed Reality, mixed reality). The common red-green-blue three-color panel includes the following two forms:

[0212] (1) As shown in FIG. 3, the RGB three-color light-emitting pieces are arranged closely on the same panel. Each pixel 16 includes three RGB light-emitting pieces, which include but are not limited to micro LED, micro OLED and the like, and the arrangement mode includes but is not limited to the uniform arrangement mode shown.

[0213] (2) As shown in FIG. 4, in one pixel 16, the RGB three-color light-emitting pieces correspond to three light-emitting panels respectively, and each light-emitting panel has only one color of light-emitting device. The light of the three colors is mixed into white light by the light mixing element 26.

[0214] Optionally, one frame time can be the time required for refreshing one frame of display picture.

[0215] The embodiments of the present application propose at least two solutions or mitigation schemes for color breakage phenomenon, and each scheme can include at least three embodiments, which will be introduced separately.

[0216] The first solution is a solution without distinguishing left and right eyes. The solution without distinguishing left and right eyes includes the following embodiments, and the system block is shown in FIG. 1 and FIG. 2. The display module 100 can include a control module 14 and an active array 12, and the control module 14 is electrically connected to the active array 12. Optionally, the display module 100 can further include a sensor 24, and the control module 14 is electrically connected to the sensor 24 and the active array 12. The sensor 24 can be integrated in the control module 14 or located outside the control module 14. The sensor 24 transmits sensor data (sensor_back) to the control module 14, and the control module 14 analyzes the sensor data, obtains environmental parameters, and adjusts the start point and end point of the light-emitting time of each color light-emitting piece in a frame time according to the environmental parameters to relatively match the phases of the light-emitting intervals of red light, green light and blue light in time sequence to avoid or alleviate the color break phenomenon. The sensor 24 includes at least one of a temperature sensor 24 and an ambient light sensor 24. The environmental parameters include at least one of temperature and ambient light.

[0217] The control module 14 includes but is not limited to a DDIC (display drive integrated circuit), a SOC (system on chip), etc.

[0218] The sensor 24 can monitor the environmental parameters (including but not limited to temperature, ambient light intensity) of the system in real time to provide real-time calibration requirements. The control module 14 can obtain the environmental parameters and determine the modulation scheme. Since the light-emitting efficiency of the light-emitting piece fluctuates greatly under different environmental parameters, the PWM (pulse width modulation) modulation scheme for such light-emitting piece will set different adjustment parameters / regulations under different environmental parameters.

[0219] When the PWM modulation parameters / regulations are switched due to changes in environmental parameters, the specific modulation scheme needs to be recalculated for different adjustment schemes. Generally, multiple sets of PWM modulation schemes can be prepared within the environmental parameter range of product use. Alternatively, the correspondence between the environmental parameters and the modulation schemes can be pre-calibrated and stored, and the control module 14 can determine the corresponding modulation scheme according to the real-time obtained environmental parameters and the above correspondence. The modulation scheme can refer to any embodiment of the present application. Correspondingly, the display module 100 can generate a power-on signal and a counting signal required for the target demand, which are used for actual PWM modulation. Alternatively, the counting signal can be a signal generated by a first counter, and the first counter is used to generate the light-emitting time required for different gray scales.

[0220] The power-up signal can be used to control the start of the light emitting time, and the counting signal can be used to generate the end of the light emitting time, and the two cooperate to generate an effective signal of the target light emitting time length. Alternatively, in an embodiment, the specific control mode is to provide a plurality of groups of power-up signals and counting signals in a frame time, that is, to generate a plurality of light emitting pulses. By adjusting the effective positions of the power-up signals and the counting signals, the specific positions of the light emitting time of the light emitting member in a frame time can be controlled. That is, in an embodiment, the red light emitting member, the green light emitting member and the blue light emitting member are modulated in brightness by one or more PWM pulse forms, and at least two of the pulse start points corresponding to the red light emitting member, the green light emitting member and the blue light emitting member are different, and / or at least two of the pulse end points are different, so as to realize the phase relative matching.

[0221] Specific implementation of PWM pulse dimming:

[0222] The process of modulating the brightness of a three-color light source by one or more PWM pulses is described in detail. It is particularly pointed out that at least two of the PWM pulse start points of the three-color light emitting member are different, and at least two of the pulse end points are different, so as to realize the phase relative matching, thereby reducing the color breakup phenomenon. For example: the PWM pulse start point of the red light emitting member is T1, and the end point is T2. The PWM pulse start point of the green light emitting member is T3, and the end point is T4. The PWM pulse start point of the blue light emitting member is T5, and the end point is T6.

[0223] Specifically, at least two of T1, T3 and T5 are different, and / or at least two of T2, T4 and T6 are different, for example, T1 and T3 are different, T1 and T5 are the same; or T1 and T3 are different, T3 and T5 are the same; or T1, T3 and T5 are all different; and / or T2 and T4 are different, T2 and T6 are the same; or T2 and T4 are different, T4 and T6 are the same; or T2, T4 and T6 are all different.

[0224] In some embodiments, the start and end points of the light emitting time of the light emitting member with the shortest light emitting time are adjusted in a frame time, so that the light emitting intervals of red light, green light and blue light are relatively matched in phase in time sequence.

[0225] Thus, by adjusting the start and end points of the light emitting time of the light emitting member with the shortest light emitting time, the light emitting intervals of red light, green light and blue light are relatively matched in phase in time sequence.

[0226] Specifically, (1) in the RGB three-color light emitting technology, the light emitting efficiency of the three colors is inconsistent, and with the increase of temperature, the decay of the light emitting efficiency of the three colors is also inconsistent. The approximate ratio of RGB when combined into white light is 2:7:1, not 1:1:1. Here, the ratio refers to the light intensity, which is related to the light emitting efficiency and the light emitting time. Due to the above reasons, in the actual modulation scheme, the light emitting time of RGB will always be inconsistent. Therefore, if only RGB emits light at the same time, the color breakup problem cannot be solved.

[0227] (2) The scheme mentioned in the present application includes but is not limited to the digital modulation technology (PWM modulation), and also includes hybrid modulation. Generally, hybrid modulation is used in products, that is, digital modulation + analog modulation. There are many combination schemes for the two modulation methods. The common use is that analog modulation is used to confirm a larger brightness adjustment range, and digital modulation is used for more precise brightness control.

[0228] (3) In the embodiment of the present application, the light emitting time of the red light emitting piece 18 is the shortest, and the light emitting time of the blue light emitting piece 22 and the green light emitting piece 20 is long. However, the present application does not specify this case. In the specific embodiment, the light emitting time of the red light emitting piece 18, the green light emitting piece 20 and the blue light emitting piece 22 is not determined.

[0229] Therefore, in one embodiment, the start point and the end point of the light emitting time of the red light emitting piece 18 are adjusted, so that the light emitting intervals of red light, green light and blue light are relatively matched in phase in time sequence. Alternatively, when adjusting the start point and the end point of the light emitting time of the red light emitting piece 18, the length of the light emitting time of the red light emitting piece 18 remains unchanged. Please refer to the C diagram of FIG. 6. The start point and the end point of the light emitting time of the red light emitting piece 18 are adjusted, so that the light emitting time of the red light emitting piece 18 is moved to the right as a whole. At this time, the start point of the white light emitting time formed by the simultaneous light emission of RGB is staggered with the start point of the green light emitting time and the start point of the blue light emitting time, and compared with the A diagram of FIG. 6, the white light emitting is delayed.

[0230] In some embodiments, within one frame time, the start point of the light emitting time of the light emitting piece with the shortest light emitting time is staggered with the start point of the light emitting time of the remaining light emitting pieces.

[0231] Therefore, the start point of the light emitting time of the light emitting piece with the shortest light emitting time can be staggered with the start point of the light emitting time of the remaining light emitting pieces by adjusting the start point of the light emitting time of the light emitting piece with the shortest light emitting time.

[0232] Specifically, in FIG. 6, the light emitting component with the shortest light emitting time is the red light emitting component 18, and the other light emitting components are the blue light emitting component 22 and the green light emitting component 20. The A diagram of FIG. 6 is a modulation scheme in the related art, in which the starting points of the light emitting times of the red light emitting component, the green light emitting component and the blue light emitting component are aligned (the same) in one frame time.

[0233] Please refer to the C diagram of FIG. 6. The starting point of the light emitting time of the red light emitting component 18 can be adjusted to be staggered with the starting points of the light emitting times of the green light emitting component 20 and the blue light emitting component 22. Since the length of the light emitting time of the red light emitting component 18 does not change, the ending point is also adjusted when the starting point of the light emitting time of the red light emitting component 18 is adjusted, so that the white light formed by RGB is delayed. The delay can disperse the light emitting time corresponding to the simultaneous light emitting of the non-tricolor device, so that the continuous light emitting time of the light emitting time corresponding to the simultaneous light emitting of the non-tricolor device is reduced, and the color breakage problem is solved.

[0234] In some embodiments, the starting point and the ending point of the light emitting time of the light emitting component with the shortest light emitting time are adjusted so that the light emitting time of the light emitting component with the shortest light emitting time is aligned with the middle of the light emitting times of the other light emitting components, and then the starting point of the light emitting time of the light emitting component with the shortest light emitting time is staggered with the starting points of the light emitting times of the other light emitting components.

[0235] Thus, the starting point of the light emitting time of the light emitting component with the shortest light emitting time can be staggered with the starting points of the light emitting times of the other light emitting components.

[0236] Specifically, in the present embodiment, the length of the light emitting time of the light emitting component with the shortest light emitting time does not change. In the C diagram of FIG. 6, the starting point and the ending point of the light emitting time of the light emitting component with the shortest light emitting time are adjusted so that the light emitting time of the light emitting component with the shortest light emitting time is moved to the right as a whole, and the light emitting times of the three light emitting components are aligned in the middle.

[0237] The light emitting times of the three light emitting components being aligned in the middle can be understood as that the length points of the light emitting times of the three light emitting components are the same in time sequence.

[0238] In some embodiments, the control module 14 includes a first counter configured to generate gray scale count information of the light emitting component with the shortest light emitting time, and the gray scale count information is used to adjust the starting point and the ending point of the light emitting time of the light emitting component with the shortest light emitting time so that the light emitting time of the light emitting component with the shortest light emitting time is aligned with the middle of the light emitting times of the other light emitting components.

[0239] Thus, the light emitting time of the light emitting component with the shortest light emitting time can be adjusted by the first counter.

[0240] Specifically, the first counter can be a gamma counter. The first counter counts up to 2^N-1, where N can be the number of bits of the image gray scale coding. In one example, N=8.

[0241] In the C diagram of FIG. 6, the determined modulation scheme is to adjust the start and end points of the light emitting time of the light emitting element with the shortest light emitting time, so that the light emitting time of the light emitting element with the shortest light emitting time is aligned with the middle of the light emitting times of the remaining light emitting elements.

[0242] Please refer to FIG. 7, the gray scale values of the light emitting element with the shortest light emitting time are distributed in the order of gray scale values according to the gray scale order, and the light emitting time of the red light emitting element 18 can be adjusted. In one example, the gray scale signal received by the first counter is 5, and the first counter gives a high level when the count value is less than 5, so that the light emitting elements with the count values of 0-4 emit light.

[0243] The processor generates a control signal PWM EM with a target width, and the pulse of the control signal PWM EM is located at the middle position of the gray scale count signal. The pulse width of the PWM EM signal controls the light emitting time of the light emitting element.

[0244] Optionally, the first counter can be integrated in the control module 14, or can be arranged outside the control module 14, and the first counter can also be a peripheral circuit of the light emitting area 12. The present application does not make specific limitation on this.

[0245] In some embodiments, the adjustment amount of the start point of the light emitting time of the light emitting element with the shortest light emitting time is t1, and t1 satisfies 0

[0246] Thus, the adjustment amount of time can be determined.

[0247] Specifically, in FIG. 6, the light emitting elements with the longest light emitting time are the green light emitting element 20 and the blue light emitting element 22, and D1 can be the duty cycle of the green light emitting element 20 or the duty cycle of the blue light emitting element 22. The light emitting element with the shortest light emitting time is the red light emitting element 18, and D2 is the duty cycle of the red light emitting element 18.

[0248] Optionally, the duty cycle can refer to the duty cycle of 255 gray scales (the highest gray scale). Optionally, in the PWM modulation scheme, the brightness is controlled by adjusting the duty cycle, and the higher the duty cycle, the greater the brightness. The duty cycle can be calculated according to the brightness, the current intensity, the light emitting efficiency, etc.

[0249] In one embodiment, as shown in FIG. 6B, the start and end points of the light emitting time of the three light emitting elements are adjusted so that the phases of the light emitting intervals of the red light, green light and blue light are relatively matched in time sequence.

[0250] In this way, the start and end points of the light emitting time of the three light emitting elements are adjusted so that the phases of the light emitting intervals of the red light, green light and blue light are relatively matched in time sequence.

[0251] Therefore, in one embodiment, the start and end points of the light emitting time of the red light emitting element 18, green light emitting element 20 and blue light emitting element 22 are optionally adjusted, and the lengths of the light emitting time of the red light emitting element 18, green light emitting element 20 and blue light emitting element 22 remain unchanged. As shown in FIG. 6B, the start and end points of the light emitting time of the red light emitting element 18, green light emitting element 20 and blue light emitting element 22 are adjusted so that the light emitting time of the red light emitting element 18, green light emitting element 20 and blue light emitting element 22 is moved as a whole to the right. At this time, the start point of the white light emitting time formed by the simultaneous light emission of RGB is staggered with the start points of the green light emitting time and blue light emitting time, and the white light emitting is delayed compared with FIG. 6A.

[0252] In some embodiments, the start and end points of the light emitting time of the three light emitting elements are adjusted in a frame time so that the light emitting time of the light emitting element with the shortest light emitting time is aligned with the middle of the light emitting time of the remaining light emitting elements.

[0253] In this way, the start and end points of the light emitting time of the three light emitting elements are adjusted so that the light emitting time of the light emitting element with the shortest light emitting time is aligned with the middle of the light emitting time of the remaining light emitting elements.

[0254] Specifically, in FIG. 6B, the start and end points of the light emitting time of the three light emitting elements are adjusted so that the light emitting time of the three light emitting elements is moved as a whole to the right, and the light emitting time of the three light emitting elements is aligned in the middle.

[0255] In some embodiments, as shown in FIG. 8B, the light emitting time of each color light emitting element is grouped in a frame time, and then the start and end points of the light emitting time of each color light emitting element are adjusted.

[0256] In this way, the light emitting time of each color light emitting element can be grouped, and then the start and end points of the light emitting time of each color light emitting element are adjusted.

[0257] Grouping the light emitting time can form at least two light emitting sub-times. In one embodiment, the light emitting time of the light emitting element is determined by the pulse width of the control signal. When grouping, one pulse can be grouped into at least two sub-pulses, and each sub-pulse corresponds to one light emitting sub-time.

[0258] The grouping scheme of the light emitting time mentioned in the present application includes but is not limited to equal grouping, unequal grouping, grouping to both ends, etc. The grouping number involved in the present application is ≥2, i.e. at least two light emitting sub-times.

[0259] The light emitting time of each color light emitting component is grouped, including but not limited to the light emitting time of the light emitting component with the shortest light emitting time, and the light emitting time of the light emitting component with the shortest light emitting time and the light emitting time of the remaining light emitting components, etc.

[0260] After grouping, in terms of timing, the start point of the first light emitting sub-time can be the same as or delayed from the start point of the light emitting time before grouping. The end point of the last light emitting sub-time can be the same as or advanced from the end point of the light emitting time before grouping, which is not specifically limited in the present application.

[0261] After grouping, the start point and the end point of the light emitting sub-time are different from at least one of the start point and the end point of the light emitting time before grouping, i.e. for a certain light emitting sub-time, its start point can be the same as the start point of the light emitting time before grouping, and its end point can be different from the end point of the light emitting time before grouping; for a certain light emitting sub-time, its start point can be different from the start point of the light emitting time before grouping, and its end point can be the same as the end point of the light emitting time before grouping; for a certain light emitting sub-time, its start point can be different from the start point of the light emitting time before grouping, and its end point can be different from the end point of the light emitting time before grouping.

[0262] In some embodiments, the light emitting time of the light emitting component with the shortest light emitting time is grouped to form multiple light emitting sub-times within a frame time, so that the light emitting intervals of red light, green light and blue light are relatively matched in terms of timing.

[0263] Therefore, the light emitting time of the light emitting component with the shortest light emitting time can be grouped.

[0264] Specifically, grouping the light emitting time of the light emitting component with the shortest light emitting time can more effectively alleviate or to some extent avoid the color break phenomenon.

[0265] In FIG. 8, the light emitting component with the shortest light emitting time is the red light emitting component 18, and the light emitting time of the red light emitting component 18 is grouped, for example, the light emitting time of the red light emitting component 18 is divided into two groups.

[0266] In some embodiments, the light emitting time of the light emitting component with the shortest light emitting time is evenly divided into at least two light emitting sub-times within a frame time.

[0267] Therefore, the light emitting time of the light emitting component with the shortest light emitting time can be evenly divided into at least two light emitting sub-times.

[0268] Specifically, the length of each of the plurality of light emitting sub-times into which the light emitting time of the light emitting element with the shortest light emitting time is evenly divided is the same. In the B drawing of FIG. 8, the light emitting element with the shortest light emitting time is the red light emitting element 18, and the light emitting time of the red light emitting element 18 is evenly divided into two light emitting sub-times, and the lengths of the two light emitting sub-times are the same.

[0269] It can be understood that the total length of all the light emitting sub-times added together is the same as the length of the light emitting time before grouping.

[0270] The A drawing of FIG. 8 is a modulation scheme in the related art, in which the starting points of the light emitting times of the red light emitting element, the green light emitting element, and the blue light emitting element are the same and are not grouped in a frame time.

[0271] In some embodiments, please refer to the B drawing of FIG. 8 and FIG. 9, the control module 14 includes a first counter and a second counter;

[0272] The second counter is configured to count the number of light emitting sub-times;

[0273] The first counter is configured to generate gray scale count information, and when the first counter completes the gray scale count of one light emitting sub-time, the second counter counts the number of light emitting sub-times by one until the count of the second counter for the light emitting sub-times is equal to the total number of light emitting sub-times in a frame time.

[0274] Thus, the light emitting time of the light emitting element with the shortest light emitting time can be evenly divided into at least two light emitting sub-times.

[0275] Specifically, the first counter can be a gamma counter. The first counter counts 2^N-1 in total, and N can refer to the number of bits of image gray scale coding. In an example, N=8. The second counter can be a frame counter.

[0276] In the B drawing of FIG. 8, the determined modulation scheme is to evenly divide the light emitting time of the light emitting element with the shortest light emitting time into two light emitting sub-times. The second counter can receive a grouping number configuration signal Frame_num for frame count. The grouping number can be preset. In a specific embodiment scheme, the grouping number is a preset fixed value.

[0277] When the first counter completes the gray scale count of one light emitting sub-time, the second counter counts the number of light emitting sub-times by one, and enters the count of the next grouping. In each grouping, the first counter counts from 0 to 2^N-1.

[0278] Each gray-scale light emitting time needs to generate a control signal PWM EM (light emitting signal) through the first counter and the second counter. The counting of the second counter shows that the light emitting time of the red light emitting element 18 is an average grouping scheme.

[0279] Optionally, the first counter and the second counter can be integrated inside the control module 14, or can be arranged outside the control module 14, and the first counter and the second counter can also be peripheral circuits located in the light emitting area 12. The present application does not make specific limitations on this.

[0280] In some embodiments, please refer to FIG. 8C, in a frame time, the light emitting time of the light emitting element with the shortest light emitting time is not evenly divided into at least two light emitting sub-times.

[0281] Therefore, the light emitting time of the light emitting element with the shortest light emitting time is not evenly divided into at least two light emitting sub-times.

[0282] Specifically, in the multiple light emitting sub-times into which the light emitting time of the light emitting element with the shortest light emitting time is not evenly divided, the length of some or certain light emitting sub-times can be different from the length of other light emitting sub-times, the length of some light emitting sub-times can be the same, or the length of all light emitting sub-times can be different. In FIG. 8C, the light emitting time of the light emitting element with the shortest light emitting time is not evenly divided into two light emitting sub-times, and the lengths of the two light emitting sub-times are different.

[0283] In some embodiments, please refer to FIG. 8D, in a frame time, the light emitting time of the remaining light emitting elements is evenly or unevenly divided into at least two light emitting sub-times.

[0284] Therefore, in the case of grouping the light emitting time of the light emitting element with the shortest light emitting time, the light emitting time of the remaining light emitting elements can also be grouped.

[0285] Specifically, in the embodiment of FIG. 8D, the light emitting element with the shortest light emitting time is the red light emitting element 18, and the remaining light emitting elements are the green light emitting element 20 and the blue light emitting element 22. The light emitting time of the green light emitting element 20 is evenly or unevenly divided into at least two light emitting sub-times, and the light emitting time of the blue light emitting element 22 is evenly or unevenly divided into at least two light emitting sub-times, which can further alleviate the color breakup phenomenon. It can be understood that the remaining light emitting elements can include any one of the other two light emitting elements in addition to the light emitting element with the shortest light emitting time, or the other two light emitting elements.

[0286] In one embodiment, the light emitting time of any one of the green light emitting element 20 and the blue light emitting element 22 can be evenly or unevenly divided into at least two light emitting sub-times.

[0287] In some embodiments, referring to FIG. 10B, the multiple light emitting sub-times of the light emitting component with the shortest light emitting time are evenly distributed within a frame time.

[0288] In this way, the multiple light emitting sub-times can be evenly distributed.

[0289] Specifically, the even distribution can mean that the time interval between every two adjacent light emitting sub-times is the same in the time sequence. In FIG. 10B, the light emitting time of the red light emitting component 18 is evenly divided into two light emitting sub-times, and the time interval between the two light emitting sub-times can be arbitrary, as long as the end point of the second (last) light emitting sub-time is not later than the end point of the light emitting time of the remaining light emitting components.

[0290] FIG. 10A is a modulation scheme in the related art, in which the start points of the light emitting times of the red light emitting component, the green light emitting component, and the blue light emitting component are the same and are not grouped within a frame time.

[0291] In some embodiments, referring to FIG. 10C, in the multiple light emitting sub-times of the light emitting component with the shortest light emitting time within a frame time, the start point of the first light emitting sub-time is the same as the start point of the light emitting time of the remaining light emitting components, and the end point of the last light emitting sub-time is the same as the end point of the light emitting time of the remaining light emitting components.

[0292] In this way, the light emitting sub-time can be aligned with the two ends of the light emitting time of the remaining light emitting components.

[0293] Specifically, in the embodiment of FIG. 10C, the remaining light emitting components include the green light emitting component 20 and the blue light emitting component 22. The start point of the light emitting time of the green light emitting component 20 and the start point of the light emitting time of the blue light emitting component 22 are the same (aligned) within a frame time, and the end point of the light emitting time of the green light emitting component 20 and the end point of the light emitting time of the blue light emitting component 22 are the same (aligned), that is, the two ends of the light emitting time of the green light emitting component 20 and the light emitting time of the blue light emitting component 22 are aligned.

[0294] In FIG. 10C, the light emitting time of the red light emitting component 18 is evenly or unevenly divided into two light emitting sub-times, the start point of the first light emitting sub-time is the same as the start point of the light emitting time of the green light emitting component 20, so that the head end of the first light emitting sub-time is aligned with the head end of the light emitting time of the green light emitting component 20. The end point of the last light emitting sub-time is the same as the end point of the light emitting time of the green light emitting component 20, so that the tail end of the last light emitting sub-time is aligned with the tail end of the light emitting time of the green light emitting component 20.

[0295] In one embodiment, the light emitting time of the red light emitting element 18 is evenly or unevenly divided into three light emitting sub-times, and the start of the first light emitting sub-time is the same as the start of the light emitting time of the green light emitting element 20. The end of the last light emitting sub-time is the same as the end of the light emitting time of the green light emitting element 20. The time interval between the first light emitting sub-time and the middle light emitting sub-time and the time interval between the middle light emitting sub-time and the last light emitting sub-time can be the same or different.

[0296] In one embodiment, the light emitting time of the red light emitting element 18 is evenly or unevenly divided into more than three light emitting sub-times, and the specific configuration can refer to the configuration described above, which will not be described in detail here.

[0297] It can be understood that in other embodiments, the remaining light emitting elements can refer to the blue light emitting element 22 or the green light emitting element 20. The light emitting time of the blue light emitting element 22 and the green light emitting element 20 can be the same or different.

[0298] In some embodiments, please refer to FIG. 10C and FIG. 11, the control module 14 includes a first counter and a second counter;

[0299] The second counter is configured to count the number of light emitting sub-times;

[0300] The first counter is configured to generate gray scale count information, and the gray scale count information is used to make the start of the first light emitting sub-time the same as the start of the light emitting time of the remaining light emitting elements, and the end of the last light emitting sub-time the same as the end of the light emitting time of the remaining light emitting elements;

[0301] When the first counter completes the gray scale count of one light emitting sub-time, the second counter counts the number of light emitting sub-times until the count of the second counter is equal to the total number of light emitting sub-times in one frame time.

[0302] In this way, the light emitting time of the light emitting element with the shortest light emitting time can be aligned with the light emitting time of the remaining light emitting elements at both ends.

[0303] Specifically, the first counter can be a gamma counter. The first counter counts 2^N-1, and N can refer to the number of bits of image gray scale encoding. In one example, N=8. The second counter can be a frame counter.

[0304] In FIG. 10C, the determined modulation scheme is that in the multiple light emitting sub-times of the light emitting element with the shortest light emitting time in one frame time, the start of the first light emitting sub-time is the same as the start of the light emitting time of the remaining light emitting elements, and the end of the last light emitting sub-time is the same as the end of the light emitting time of the remaining light emitting elements.

[0305] The second counter can receive a frame number configuration signal frame_num for fractional counting. The frame number can be preset. In a specific embodiment, the frame number is a preset fixed value.

[0306] When the first counter completes the gray scale counting of one sub-emitting time, the second counter counts up one for the number of sub-emitting times and enters the counting of the next frame.

[0307] Optionally, in an embodiment, the gray scale counting information can be configured such that the gray scale value direction of the first sub-emitting time is opposite to that of the last sub-emitting time. In FIG. 11, the gray scale value direction of the first sub-emitting time is from 0 to 2^N-1, and the gray scale value direction of the second (last) sub-emitting time is from 2^N-1 to 0. In an example, for the first sub-emitting time, when the first counter receives a gray scale signal of 3, the first counter can emit light for the gray scales less than 3, i.e., gray scales 0-2, and the pulse width of PWM_EM is the length corresponding to the gray scales 0-2. For the last sub-emitting time, when the first counter receives a gray scale signal of 3, the first counter can emit light for the gray scales less than 3, i.e., gray scales 0-2, and the pulse width of PWM_EM is the length corresponding to the gray scales 0-2, so that the start of the first sub-emitting time can be the same as the start of the emitting time of the rest of the emitting members, and the end of the last sub-emitting time can be the same as the end of the emitting time of the rest of the emitting members.

[0308] The first counter and the second counter are needed to generate the control signal PWM_EM (emitting signal) for each gray scale emitting time. The counting of the second counter shows that the emitting time of the red light emitting member 18 is the average grouping scheme.

[0309] Optionally, the first counter and the second counter can be integrated inside the control module 14 or can be arranged outside the control module 14. The first counter and the second counter can also be peripheral circuits of the emitting area 12. The present application does not make specific limitations thereon.

[0310] In some embodiments, please refer to FIG. 10D, in the multiple sub-emitting times of the emitting member with the shortest emitting time in a frame time, the start of the sub-emitting time is adjusted by an amount of t2, t2 satisfies 0 < t2 ≤ (D1-D2) / 2, where D1 is the duty cycle of the emitting member with the longest emitting time, and D2 is the duty cycle of the emitting member with the shortest emitting time, and the end of the last sub-emitting time is not later than the end of the emitting time of the emitting member with the longest emitting time.

[0311] Thus, the start of the sub-emitting time can be adjusted.

[0312] Specifically, in the D chart of FIG. 10, the light emitting component with the longest light emitting time is the green light emitting component 20 and the blue light emitting component 22, and D1 can be the duty cycle of the green light emitting component 20 or the duty cycle of the blue light emitting component 22. The light emitting component with the shortest light emitting time is the red light emitting component 18, and D2 is the duty cycle of the red light emitting component 18.

[0313] The light emitting sub-time at the starting point of adjustment includes, but is not limited to, any one or two or more of the first light emitting sub-time, the last light emitting sub-time, and the intermediate sub-time between the first light emitting sub-time and the last light emitting sub-time. In the D chart of FIG. 10, the light emitting sub-time at the starting point of adjustment is the first light emitting sub-time.

[0314] The second scheme is a scheme for distinguishing left and right eyes, which includes the following embodiments, and the system block is shown in FIG. 12. Optionally, the sensor 24 includes at least one of a temperature sensor and an ambient light sensor, and the sensor 24 monitors the environmental parameters (including at least one of temperature and ambient light intensity) in real time to provide real-time calibration requirements. The control module 14 processes the environmental parameters, assigns different modulation schemes to the left and right eye light emitting areas 30, and calculates the left and right eye calibration optimization parameters respectively. The second scheme applies different modulation schemes to the left and right eyes, which is more conducive to solving the color break problem.

[0315] In some embodiments, referring to FIG. 13, the light emitting area 12 includes the left eye light emitting area 28 and the right eye light emitting area 30, and the control module 14 is configured to adjust the starting point and the ending point of the light emitting time of each color light emitting component of the left eye light emitting area 28 and / or the right eye light emitting area 30 in a frame time, so that the phase of the light emitting area of red, green and blue light in time sequence is relatively matched.

[0316] Therefore, the starting point and the ending point of the light emitting time of each color light emitting component of the left eye light emitting area 28 and / or the right eye light emitting area 30 can be adjusted so that the phase of the light emitting area of red, green and blue light in time sequence is relatively matched.

[0317] In some embodiments, the starting point and the ending point of the light emitting time of the light emitting component with the shortest light emitting time of the left eye light emitting area 28 and / or the right eye light emitting area 30 are adjusted, so that the starting point of the light emitting time of the light emitting component with the shortest light emitting time of the left eye light emitting area 28 is staggered with the starting point of the light emitting time of the light emitting component with the shortest light emitting time of the right eye light emitting area 30.

[0318] Therefore, the starting point and the ending point of the light emitting time of the light emitting component with the shortest light emitting time of the left eye light emitting area 28 and / or the right eye light emitting area 30 can be adjusted so that the phase of the light emitting area of red, green and blue light in time sequence is relatively matched.

[0319] Specifically, the start and end of the light emitting time of the light emitting element with the shortest light emitting time of the left eye light emitting area 28 and / or the right eye light emitting area 30 is adjusted, including adjusting the start and end of the light emitting time of the light emitting element with the shortest light emitting time of the left eye light emitting area 28, adjusting the start and end of the light emitting time of the light emitting element with the shortest light emitting time of the right eye light emitting area 30, and adjusting the start and end of the light emitting time of the light emitting element with the shortest light emitting time of the left eye light emitting area 28 and the right eye light emitting area 30.

[0320] In one embodiment, the start of the light emitting time of the light emitting element with the shortest light emitting time of the left eye light emitting area 28 is staggered with the start of the light emitting time of the light emitting element with the shortest light emitting time of the right eye light emitting area 30.

[0321] In this way, the effective light emitting time of the light emitting element with the shortest light emitting time of the two eyes can be increased.

[0322] Specifically, in FIG. 13, the light emitting element with the shortest light emitting time is the red light emitting element 18, and the light emitting time of the red light emitting element 18 of the left eye light emitting area 28 is staggered in time with the light emitting time of the red light emitting element 18 of the right eye light emitting area 30, so that the effective light emitting time of the red light emitting element 18 of the two eyes can be increased.

[0323] In the embodiment shown in FIG. 13, the light emitting time of the red light emitting element 18 of the left eye light emitting area 28 is not adjusted, the start and end of the light emitting time of the red light emitting element 18 of the right eye light emitting area 30 is adjusted, the start and end of the light emitting time of the red light emitting element 18 of the right eye light emitting area 30 is delayed, and the light emitting time of the red light emitting element 18 is moved to the right as a whole, so that the start of the light emitting time of the red light emitting element 18 of the left eye light emitting area 28 is staggered with the start of the light emitting time of the red light emitting element 18 of the right eye light emitting area 30, thereby increasing the effective light emitting time of the light emitting element with the shortest light emitting time of the two eyes.

[0324] In one embodiment, the start of the light emitting time of the light emitting element with the shortest light emitting time of the left eye light emitting area 28 is staggered with the start of the light emitting time of the light emitting element with the shortest light emitting time of the right eye light emitting area 30.

[0325] It can be understood that the embodiments in the first scheme about staggering the start of the light emitting time of the light emitting element with the shortest light emitting time with the start of the light emitting time of the remaining light emitting elements are all applicable to the present embodiment.

[0326] In some embodiments, referring to FIG. 14, the light emitting time of the light emitting element with the shortest light emitting time in the left eye light emitting area 28 is divided into at least two light emitting sub-times, and / or the light emitting time of the light emitting element with the shortest light emitting time in the right eye light emitting area 30 is divided into at least two light emitting sub-times.

[0327] In this way, the color breakup phenomenon can be further alleviated.

[0328] Specifically, the light emitting time of the light emitting element with the shortest light emitting time in the left eye light emitting area 28 is divided into at least two light emitting sub-times, and / or the light emitting time of the light emitting element with the shortest light emitting time in the right eye light emitting area 30 is divided into at least two light emitting sub-times, so that the color breakup phenomenon can be further alleviated.

[0329] It can be understood that the embodiments of the first scheme regarding grouping and alignment of light emitting time are applicable to the present embodiment.

[0330] Optionally, the light emitting time of the light emitting element with the shortest light emitting time in the left eye light emitting area 28 is divided into at least two light emitting sub-times, and / or the light emitting time of the light emitting element with the shortest light emitting time in the right eye light emitting area 30 is divided into at least two light emitting sub-times can be based on increasing the effective light emitting time of the light emitting element with the shortest light emitting time in the binocular.

[0331] In some embodiments, referring to FIG. 15, the light emitting time of the light emitting element with the shortest light emitting time in one of the left eye light emitting area 28 and the right eye light emitting area 30 is divided into at least two light emitting sub-times, and the start point of the light emitting time of the light emitting element with the shortest light emitting time in the other of the left eye light emitting area 28 and the right eye light emitting area 30 is staggered with the start point of the light emitting time of the remaining light emitting elements.

[0332] In this way, the color breakup phenomenon can be further alleviated.

[0333] Specifically, the light emitting time of the light emitting element with the shortest light emitting time in one of the left eye light emitting area 28 and the right eye light emitting area 30 is divided into at least two light emitting sub-times, and the start point of the light emitting time of the light emitting element with the shortest light emitting time in the other of the left eye light emitting area 28 and the right eye light emitting area 30 is staggered with the start point of the light emitting time of the remaining light emitting elements, so that the color breakup phenomenon can be further alleviated.

[0334] In FIG. 15, the light emitting time of the red light emitting element 18 in the right eye light emitting area 30 is divided into two light emitting sub-times, and the start point of the light emitting time of the red light emitting element 18 in the left eye light emitting area 28 is staggered with the start point of the light emitting time of the green light emitting element 20.

[0335] In one embodiment, the light emitting time of the red light emitting element 18 of the left eye light emitting area 28 is divided into two light emitting sub-times, and the start point of the light emitting time of the red light emitting element 18 of the right eye light emitting area 30 is staggered with the start point of the light emitting time of the green light emitting element 20.

[0336] It can be understood that the embodiments of the first scheme regarding grouping and alignment of the light emitting time are applicable to the present embodiment.

[0337] The present embodiment provides a control method of a display module 100, the display module 100 comprising a light emitting area 12, the light emitting area 12 comprising a plurality of pixels 16, each pixel 16 comprising a red light emitting element 18, a green light emitting element 20 and a blue light emitting element 22.

[0338] The control method comprises:

[0339] In one frame time, the start point and the end point of the light emitting time of each color light emitting element are adjusted, so that the phases of the light emitting areas 12 of red light, green light and blue light in time sequence are relatively matched, to avoid or alleviate the color break phenomenon.

[0340] It should be noted that the above explanations and descriptions of the embodiments and advantages of the display module 100 are also applicable to the control method of the present embodiment, and are not described in detail here to avoid redundancy.

[0341] In some embodiments, in one frame time, the start point and the end point of the light emitting time of the light emitting element with the shortest light emitting time are adjusted, so that the phases of the light emitting areas 12 of red light, green light and blue light in time sequence are relatively matched.

[0342] In some embodiments, in one frame time, the start point of the light emitting time of the light emitting element with the shortest light emitting time is staggered with the start point of the light emitting time of the remaining light emitting elements.

[0343] In some embodiments, in one frame time, the start point and the end point of the light emitting time of the light emitting element with the shortest light emitting time are adjusted, so that the light emitting time of the light emitting element with the shortest light emitting time is aligned with the middle of the light emitting time of the remaining light emitting elements, and the start point of the light emitting time of the light emitting element with the shortest light emitting time is staggered with the start point of the light emitting time of the remaining light emitting elements.

[0344] In some embodiments, the display module 100 comprises a first counter, and the control method comprises: the first counter generates gray scale count information of the light emitting element with the shortest light emitting time, and the gray scale count information is used to adjust the start point and the end point of the light emitting time of the light emitting element with the shortest light emitting time, so that the light emitting time of the light emitting element with the shortest light emitting time is aligned with the middle of the light emitting time of the remaining light emitting elements.

[0345] In some embodiments, the adjustment amount of the start of the light emitting time of the light emitting member with the shortest light emitting time is t1, and t1 satisfies 0 < t1 ≤ (D1-D2) / 2, where D1 is the duty cycle of the light emitting member with the longest light emitting time, and D2 is the duty cycle of the light emitting member with the shortest light emitting time.

[0346] In some embodiments, the start and end of the light emitting time of the three light emitting members are adjusted within a frame time, so that the phases of the light emitting regions 12 of red light, green light and blue light are relatively matched in time sequence.

[0347] In some embodiments, the start and end of the light emitting time of the three light emitting members are adjusted within a frame time, so that the light emitting time of the light emitting member with the shortest light emitting time is aligned with the middle of the light emitting time of the remaining light emitting members.

[0348] In some embodiments, the light emitting time of each color light emitting member is grouped, and the start and end of the light emitting time of each color light emitting member is adjusted.

[0349] In some embodiments, the light emitting time of the light emitting member with the shortest light emitting time is grouped to form multiple light emitting sub-times within a frame time, so that the phases of the light emitting regions 12 of red light, green light and blue light are relatively matched in time sequence.

[0350] In some embodiments, the light emitting time of the light emitting member with the shortest light emitting time is evenly divided into at least two light emitting sub-times within a frame time.

[0351] In some embodiments, the display module 100 comprises a first counter and a second counter.

[0352] The control method comprises: the second counter counting the number of light emitting sub-times;

[0353] The first counter generates gray scale count information, and when the first counter completes the gray scale count of a light emitting sub-time, the second counter increments the count of the number of light emitting sub-times by one, until the count of the second counter is equal to the total number of light emitting sub-times within a frame time.

[0354] In some embodiments, the light emitting time of the light emitting member with the shortest light emitting time is not evenly divided into at least two light emitting sub-times within a frame time.

[0355] In some embodiments, the light emitting time of the remaining light emitting members is evenly or unevenly divided into at least two light emitting sub-times within a frame time.

[0356] In some embodiments, the multiple light emitting sub-times of the light emitting member with the shortest light emitting time are evenly distributed within a frame time.

[0357] In some embodiments, in the multiple light emitting sub-time periods of the light emitting component with the shortest light emitting time within a frame time, the start of the first light emitting sub-time period is the same as the start of the light emitting time of the rest of the light emitting components, and the end of the last light emitting sub-time period is the same as the end of the light emitting time of the rest of the light emitting components.

[0358] In some embodiments, the display module 100 comprises a first counter and a second counter.

[0359] The control method comprises: the second counter counting the number of light emitting sub-time periods.

[0360] The first counter generates gray scale count information, which is used to make the start of the first light emitting sub-time period the same as the start of the light emitting time of the rest of the light emitting components, and the end of the last light emitting sub-time period the same as the end of the light emitting time of the rest of the light emitting components.

[0361] When the first counter completes the gray scale count of one light emitting sub-time period, the second counter adds one to the count of the number of light emitting sub-time periods, until the count of the second counter is equal to the total number of light emitting sub-time periods within a frame time.

[0362] In some embodiments, in the multiple light emitting sub-time periods of the light emitting component with the shortest light emitting time within a frame time, the start of the light emitting sub-time period is adjusted by an amount t2, t2 satisfies 0 < t2 ≤ (D1-D2) / 2, where D1 is the duty cycle of the light emitting component with the longest light emitting time, and D2 is the duty cycle of the light emitting component with the shortest light emitting time, and the end of the last light emitting sub-time period is no later than the end of the light emitting time of the light emitting component with the longest light emitting time.

[0363] In some embodiments, the light emitting area 12 comprises a left eye light emitting area 28 and a right eye light emitting area 30, and the control method comprises: adjusting the start and end of the light emitting time of each color light emitting component of the left eye light emitting area 28 and / or adjusting the start and end of the light emitting time of each color light emitting component of the right eye light emitting area 30 within a frame time, so that the phase of the light emitting area 12 of red light, green light and blue light in time sequence is relatively matched.

[0364] In some embodiments, the start and end of the light emitting time of the light emitting component with the shortest light emitting time of the left eye light emitting area 28 and / or the start and end of the light emitting time of the light emitting component with the shortest light emitting time of the right eye light emitting area 30 are adjusted, so that the start of the light emitting time of the light emitting component with the shortest light emitting time of the left eye light emitting area 28 is staggered with the start of the light emitting time of the light emitting component with the shortest light emitting time of the right eye light emitting area 30.

[0365] In some embodiments, the light emitting time of the light emitting component with the shortest light emitting time of the left eye light emitting area 28 is divided into at least two light emitting sub-time periods, and / or the light emitting time of the light emitting component with the shortest light emitting time of the right eye light emitting area 30 is divided into at least two light emitting sub-time periods.

[0366] In some embodiments, the light emitting time of the light emitting element with the shortest light emitting time of one of the left eye light emitting area 28 and the right eye light emitting area 30 is divided into at least two light emitting sub-times, and the starting point of the light emitting time of the light emitting element with the shortest light emitting time of the other of the left eye light emitting area 28 and the right eye light emitting area 30 is staggered with the starting point of the light emitting time of the remaining light emitting elements.

[0367] In some embodiments, the red light emitting element 18, the green light emitting element 20 and the blue light emitting element 22 are modulated in brightness by one or more PWM pulse forms, and at least one of the corresponding pulse starting points and ending points of the red light emitting element 18, the green light emitting element 20 and the blue light emitting element 22 is different to achieve phase relative matching.

[0368] In some embodiments, the display module 100 includes a sensor 24 configured to detect an environmental parameter, the sensor 24 including at least one of a temperature sensor and an ambient light sensor. The control method includes:

[0369] According to the environmental parameter, the starting point and the ending point of the light emitting time of each color light emitting element are adjusted within a frame time, so that the phases of the light emitting areas of red light, green light and blue light in time sequence are relatively matched to avoid or alleviate the color break phenomenon.

[0370] The embodiments of the present application provide a computer readable storage medium, which stores a computer program. When the computer program is executed by a processor, the steps of the control method of any of the above embodiments are implemented.

[0371] In one embodiment, the computer program, when executed by a processor, implements a control method including:

[0372] In one embodiment, the computer program, when executed by a processor, implements a control method including:

[0373] The display device of the embodiments of the present application includes the display module 100 of any of the above embodiments.

[0374] In the above display device, the control module 14 adjusts the starting point and the ending point of the light emitting time of each color light emitting element within a frame time, so that the phases of the light emitting areas of red light, green light and blue light in time sequence are relatively matched to avoid or alleviate the color break phenomenon, thereby optimizing the display effect to a certain extent.

[0375] Specifically, the display device can include, but is not limited to, a micro light emitting diode (Micro-LED) display device, a light emitting diode (LED) display device, an organic light emitting diode (OLED) display device, and the like, which are not specifically limited in the present application. The display device of the embodiments of the present application can be applied in the fields including, but not limited to, AR (Augmented Reality), VR (Virtual Reality), and MR (Mixed Reality), and the like.

[0376] Currently, there is great unevenness in the light emitting efficiency of each pixel point for the entire display panel, that is, the light emitting time of each pixel is not the same. This means that in a near-eye display device, these pixels with uneven light emitting efficiency and light emitting time difference can produce instantaneous noise (shimmering phenomenon), which will interfere with the user's visual experience and even cause visual fatigue.

[0377] Referring to FIGS. 18 to 26, a display module 1100 of an embodiment of the present application includes a display panel 200 and a processing module 114. The display panel 200 includes a plurality of pixels 116. The processing module 114 is electrically connected to the display panel 200, and the processing module 114 is configured to:

[0378] obtain a current brightness distribution mean value of the display panel 200;

[0379] determine, according to the current brightness distribution mean value of the display panel 200, a first grouping number N of white light emitting times of each pixel 116 within a frame time, N being a natural number greater than or equal to 2;

[0380] control each pixel 116 to emit light in N light emitting times within a frame time.

[0381] In the above display module 1100, the processing module 114 can determine the first grouping number N of white light emitting times of each pixel 116 within a frame time according to the current brightness distribution mean value of the display panel 200, and control each pixel 116 to emit light in N light emitting times within a frame time, so as to ensure the synchronization of the light emitting phase between the pixels 116, thereby increasing the frequency of the white light emitting time within a frame time, and further reducing or avoiding the generation of instantaneous noise to a certain extent, reducing the time domain noise, and improving the user's visual experience.

[0382] Specifically, the display panel 200 includes, but is not limited to, a Micro LED (micro light-emitting diode) display panel 200, a DLP (Digital Light Processing) display panel 200, an LCoS (Liquid Crystal on Silicon) display panel 200, a Micro OLED (micro organic light-emitting diode) display panel 200, and the like display panel 200 using digital modulation technology.

[0383] The embodiments of the present application can be applied to a panel that emits RGB three colors. Alternatively, in an embodiment, as shown in FIG. 19, RGB three color light-emitting components are distributed on the same display panel 200. Each pixel 116 includes RGB three light-emitting components 118, which include but are not limited to Micro LED, Micro OLED, and the like, and the arrangement mode includes but is not limited to the uniform arrangement mode shown.

[0384] Alternatively, in an embodiment, as shown in FIG. 20, in one pixel 116, RGB three color light-emitting components 118 correspond to three light-emitting panels respectively, and each light-emitting panel has only one color light-emitting device, and the light of the three colors is mixed into white light by the light mixing element 120.

[0385] In the related art, the cause of time domain noise is that, due to the difference in light-emitting efficiency of each pixel, in order to compensate for the panel brightness non-uniformity problem caused by the light-emitting efficiency, compensation needs to be made on the light-emitting time, which leads to different light-emitting times of each pixel. Moreover, for Micro LED, there is a serious difference in light-emitting efficiency and light-emitting time between RGB three colors. Therefore, from the dimension of light-emitting time, each pixel and each color is extremely uneven. In a near-eye display device, people will frequently move their eyes due to exploration or interaction needs, resulting in a large amount of relative displacement between the eyes and the screen, and causing the time domain light modulation of the screen to become spatial and temporal domain noise points on the retina.

[0386] The reason for grouping to solve the defect is that the root cause of the defect is the difference in light-emitting time. The display module 1100 of the embodiments of the present application improves the light-emitting time difference between the pixels 116 through grouping, ensures the synchronization of the light-emitting phase between the pixels 116, and reduces the time domain noise. For Micro LED, please refer to FIG. 26. In the related art, in one frame time, the white light light-emitting time (RGB simultaneous light-emitting) is W0, and the light-emitting time that contributes to the noise is the difference between the red, green, and blue light-emitting times, which is T1. In the embodiments of the present application, this difference is also shortened by grouping.

[0387] In some embodiments, as shown in the implementation of FIG. 21, N = 2, i.e., the white light emitting time is divided into two groups of emitting time, W1 and W2, in a frame time. In the two groups of emitting time, the difference between the red light emitting time and the green and blue light emitting time is T21 and T22, respectively, both of which are less than T1, so that the difference is shortened by grouping, and the number of white light emitting times in a frame time is N = 2, so that the frequency of white light emitting time is increased, the difference in emitting time between the pixel 116 and the pixel 116 is shortened, and according to the integration characteristics and low frequency characteristics of the human eye, the display module 1100 of the present implementation can ensure the synchronization of the emitting phase between the pixels 116, thereby reducing or avoiding the generation of instantaneous noise to a certain extent, reducing the time domain noise, improving the noise visible to the human eye, and even not generating the noise visible to the human eye. At the same time, this grouping method also ensures the phase synchronization degree of different color light emitting to a certain extent, and reduces the time domain noise.

[0388] Optionally, please refer to FIG. 18, the display module 1100 further includes a controller 121 and an image processing module 122, and the processing module 114 can include a driving module 124, a uniformity detection module 126 and a grouping scheme control module 128. The image processing module 122 can be electrically connected to the controller 121 and the driving module 124. The driving module 124 is electrically connected to the display panel 200 and the grouping scheme control module 128. The uniformity detection module 126 is electrically connected to the grouping scheme control module 128.

[0389] The controller 121 can send a control instruction to the image processing module 122, and the image processing module 122 can send the data to be displayed to the driving module 124 according to the control instruction. The driving module 124 generates a target required control signal to control each pixel 116 to emit light. The uniformity detection module 126 can obtain the current brightness distribution average of the display panel 200 when the display panel 200 emits light. The grouping scheme control module 128 can determine the first grouping number N of the white light emitting time of each pixel 116 in a frame time according to the current brightness distribution average of the display panel 200. The driving module 124 can control each pixel 116 to emit light for N emitting times in a frame time, so as to increase the frequency of white light emitting time in a frame time.

[0390] In some implementations, the length of the emitting time is determined by a pulse-width modulation (PWM) signal of each pixel 116.

[0391] Thus, the PWM signal can be used to control the pixel 116 to emit light.

[0392] Specifically, the driving module 124 can modulate the PWM signal according to the first grouping number N, so that the PWM signal has N pulses in a frame time, and the width of each pulse can correspond to the length of a corresponding light-emitting time, so that the pixel 116 can emit light in the corresponding light-emitting time.

[0393] In some embodiments, the processing module 114 is configured to:

[0394] obtain a preset grouping number A corresponding to the attribute of the display panel 200 in a frame time, and obtain a second grouping number C determined according to a current average brightness distribution of the display panel 200 in a frame time;

[0395] determine the smaller one of A and C as the first grouping number N.

[0396] Therefore, the first grouping number N can be adapted to the attribute of the display panel 200.

[0397] Specifically, the preset grouping number A corresponding to the attribute of the display panel 200 can be an inherent attribute of the display panel 200, which can be calibrated and stored in advance. In one embodiment, the attribute of the display panel 200 includes but is not limited to pixel response limit, and the increase of the grouping number will bring challenges to the device performance (for example, the minimum pulse light-emitting time becomes shorter), which needs to be balanced by engineers for device performance and shimmering defects, thus resulting in that engineers choose fewer grouping schemes (fewer grouping schemes also have improvement effect).

[0398] Therefore, the processing module 114 can compare A and C, and determine the smaller one of A and C as the first grouping number N, so that each pixel can emit light in N light-emitting times in a frame time, thereby adapting the grouping number to the attribute of the display panel 200.

[0399] 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.

[0400] In some embodiments, please refer to FIG. 18, the processing module 114 includes a uniformity detection module 126 and a driving module 124, and the driving module 124 is configured to:

[0401] The uniformity detection module 126 is configured to detect the light-emitting brightness of all pixels 116 of the display panel 200.

[0402] The current average brightness distribution of the display panel 200 is determined according to the light-emitting brightness of each pixel 116 of the display panel 200.

[0403] Thus, the current average brightness distribution of the display panel 200 can be determined.

[0404] Optionally, please refer to FIG. 18, during the process of detecting the average brightness distribution of the display panel 200, the controller 121 can send a detection instruction to the image processing module 122, the image processing module 122 can send the detection data to be displayed to the driving module 124 according to the detection instruction, and the driving module 124 can control all the pixels of the display panel 200 to emit light to display the detection image according to the detection data. Optionally, the detection image can be a 255 gray scale image.

[0405] The uniformity detection module 126 can detect the current average brightness distribution of the display panel 200 when the display panel 200 displays the detection image. The grouping scheme control module 128 can determine the first grouping number N of the white light emitting time of each pixel 116 in a frame of time according to the current average brightness distribution of the display panel 200.

[0406] Optionally, in other embodiments, the detection of the average brightness distribution of the display panel 200 can be skipped, and the previously measured average brightness distribution of the display panel 200 can be directly input to the grouping scheme control module 128.

[0407] In some embodiments, please refer to FIG. 23, the uniformity detection module 126 includes a data processing module 130, which is configured to:

[0408] According to the resolution of the display panel 200 and the light emitting brightness of all the pixels 116 of the display panel 200, a two-dimensional brightness matrix of the display panel 200 is obtained;

[0409] According to the two-dimensional brightness matrix of the display panel 200, the current average brightness distribution of the display panel 200 is obtained.

[0410] Thus, the current average brightness distribution of the display panel 200 can be obtained.

[0411] Optionally, the uniformity detection module 126 includes a brightness detection module 132 and an output module 134, and the data processing module 130 is electrically connected to the brightness detection module 132 and the output module 134. The brightness detection module 132 (including but not limited to an illuminometer, a brightness meter, a spectrometer, etc.) can be used to measure the brightness of the display panel 200 displaying the detection image, for example, to measure the white field brightness of the display panel 200 before compensation. The measured light emitting brightness of the display panel 200 is input into the data processing module 130. The data processing module 130 can obtain a two-dimensional brightness matrix L of the display panel 200 according to the resolution of the display panel 200 and the light emitting brightness of all the pixels 116 of the display panel 200. ijwhere i, j represent the position of the pixel 116, L ij represents the luminance value of the i-th row and j-th column pixel 116.

[0412] The data processing module 130 can obtain the current luminance distribution mean of the display panel 200 according to the two-dimensional luminance matrix L ij The output module 134 can output the current luminance distribution mean of the display panel 200 to the grouping scheme control module 128.

[0413] Alternatively, the formula for calculating the luminance distribution mean of the display panel 200 is as follows:

[0414] Assuming that the dimension of the two-dimensional luminance matrix is m x n. Then the luminance distribution mean μ of the display panel 200 is (ΣΣL ij ) / (m x n).

[0415] In some embodiments, please refer to FIG. 18 and FIG. 23, the processing module 114 includes a grouping scheme control module 128, the grouping scheme control module 128 is electrically connected to the uniformity detection module 126, and the grouping scheme control module 128 is configured to:

[0416] According to the luminance of each pixel 116 and the current luminance distribution mean of the display panel 200, the compensated light-emitting time of each pixel 116 is obtained;

[0417] The maximum difference between the compensated light-emitting time of each pixel 116 and the surrounding pixels 116 is obtained;

[0418] According to the maximum difference and the distance between each pixel 116 and the pixel 116 corresponding to the maximum difference, the perceptible threshold is obtained;

[0419] According to the luminance of each pixel 116 and the luminance of the pixel 116 corresponding to the maximum difference, the contrast between each pixel 116 and the pixel 116 corresponding to the maximum difference is obtained;

[0420] The first grouping number N of the white light-emitting time of each pixel 116 is determined as the grouping number corresponding to the condition that the perceptible threshold is greater than or equal to the contrast.

[0421] Thus, the first grouping number N can be determined according to the luminance of each pixel 116 and the current luminance distribution mean of the display panel 200.

[0422] Specifically, the compensated light-emitting time of each pixel 116 is inversely proportional to the light-emitting efficiency, and the proportional relationship of the light-emitting time can be obtained according to the proportional relationship of the luminance to correct the light-emitting time before compensation to obtain the light-emitting time after compensation.

[0423] Optionally, the proportional relationship of the brightness is K1, K1 = the ratio of the brightness of each pixel 116 / the average of the current brightness distribution of the display panel 200. The proportional relationship of the light-emitting time is K2, K2 = 1 / K1. The compensated light-emitting time is equal to the product of K2 and the light-emitting time before compensation. The light-emitting time before compensation is known, and the light-emitting time before compensation is the white light-emitting time before grouping, that is, the sum of N light-emitting times.

[0424] Optionally, the surrounding pixels 116 can be Pn pixels 116 contained in a circle with a certain pixel 116 as the center and Pn as the radius. That is, the maximum difference T between each pixel 116 and all the compensated light-emitting times of its Pn surrounding pixels 116 is obtained. ij_max .

[0425] Pn can refer to the range of human eye movement in a frame time. Optionally, in an embodiment, Pn can be calculated as follows: when a user uses an AR / VR (Virtual Reality) device, frequent eye movements will be performed, so Pn = (1 / frame rate) x duty cycle x eye movement speed x PPD. PPD represents the pixel density per degree (Pixels Per Degree), and the duty cycle represents the duty cycle of the control signal (such as the duty cycle of the PWM signal) for controlling the light-emitting of the pixel 116. Optionally, the eye movement speed can be less than or equal to 100 deg / sec. In an example, the eye movement speed = 100 deg / sec.

[0426] The perceptible 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 space-time frequencies. It is based on modeling the perception characteristics of the human eye to different spatial frequencies (pattern changes in spatial position) and temporal frequencies (pattern changes in time). In related technologies, there are many calibrated space-time contrast sensitivity functions, which have slightly different parameters and forms, but consistent trends. Optionally, in an embodiment, the space-time contrast sensitivity function can use the calculation model The pyramid of visibility disclosed by Andrew B. Watson in 2016. Optionally, in other embodiments, the space-time contrast sensitivity function can also be a self-developed space-time contrast sensitivity function or other space-time contrast sensitivity functions in related technologies.

[0427] Optionally, the spatio-temporal contrast sensitivity function has two input parameters: temporal frequency and spatial frequency. For each pixel 116, the temporal frequency can be calculated by the maximum difference Tij_max, the spatial frequency can be calculated by the distance between the pixel 116 and the pixel 116 corresponding to the maximum difference Tij_max, and the perceptible threshold can be calculated by substituting the spatio-temporal contrast sensitivity function (model). Wherein, the temporal frequency = 1 / Tij_max. The spatial frequency = distance / PPD / 2, and the unit of the spatial frequency is cpd (cycles per degree). The distance is the distance between the pixel 116 and the pixel 116 corresponding to the maximum difference Tij_max.

[0428] Optionally, the contrast of each pixel 116 and the pixel 116 corresponding to the maximum difference T ij_max The contrast of the pixel 116 corresponding to the maximum difference T ij_max The luminance value of the pixel 116 corresponding to the maximum difference T

[0429] Initially, no grouping, and the first grouping number is 1. If the perceptible threshold is less than the contrast, increase the first grouping number by 1, that is, the first grouping number is more, calculate the new temporal frequency and the perceptible threshold, until the perceptible threshold is greater than or equal to the contrast. Thus, the grouping number corresponding to the case that the perceptible threshold is greater than or equal to the contrast can be determined as the first grouping number N of the white light emitting time of each pixel 116.

[0430] It can be understood that the method for determining the second grouping number C according to the current luminance distribution average of the display panel 200 can also refer to the method for determining the first grouping number N according to the current luminance distribution average of the display panel 200 in the embodiment.

[0431] In some embodiments, the perceptible threshold is positively correlated with the temporal frequency, and the temporal frequency is positively correlated with N. Specifically, the first grouping number can change the temporal frequency, and the temporal frequency after grouping = the temporal frequency before grouping x the grouping number. The grouping scheme with a larger N means to increase the temporal frequency, and increasing the temporal frequency will increase the perceptible threshold (contrast threshold). The contrast of each pixel 116 and the pixel 116 corresponding to the maximum difference T ij_max The contrast of the pixel 116 corresponding to the maximum difference T

[0432] It can be understood that the first grouping number N of each pixel can be the same or different.

[0433] In some embodiments, when the lengths of the N light emitting times are different, the temporal frequency is the minimum value of all temporal frequencies corresponding to the N light emitting times.

[0434] Specifically, the grouping can be equal grouping and unequal grouping, for equal grouping, the time frequency after grouping = the time frequency before grouping x the number of grouping. For unequal grouping, the time frequency of each pixel 116 is the minimum of all time frequencies corresponding to N emitting time, i.e. the time frequency after grouping = min(time frequencies corresponding to all emitting time).

[0435] In some embodiments, the grouping scheme control module 128 is configured to:

[0436] obtain the perceptible threshold and the contrast corresponding to the current pixel 116 according to the number of grouping of the first pixel and the maximum difference value and distance corresponding to the current pixel 116;

[0437] when the perceptible threshold corresponding to the current pixel 116 is greater than or equal to the corresponding contrast, determine the number of grouping of the current pixel 116 as the first number of grouping of the first pixel;

[0438] when the perceptible threshold corresponding to the current pixel 116 is less than the corresponding contrast, increase the number of grouping based on the first number of grouping of the first pixel until the perceptible threshold corresponding to the current pixel 116 is greater than or equal to the corresponding contrast.

[0439] Thus, the amount of calculation can be reduced and the efficiency can be improved.

[0440] Specifically, in one embodiment, the first pixel and the current pixel 116 can be one pixel 116 adjacent in the order of calculating the number of grouping.

[0441] The perceptible threshold and the contrast corresponding to the current pixel 116 can be obtained according to the first number of grouping of the first pixel and the maximum difference value and distance corresponding to the current pixel 116, that is, the time frequency corresponding to the first number of grouping of the first pixel can be taken as the time frequency of the current pixel 116, and the spatial frequency of the current pixel 116 can be substituted into the spatiotemporal contrast sensitivity function to calculate the perceptible threshold corresponding to the current pixel 116. The contrast corresponding to the current pixel 116 can be calculated according to the luminance value of the current pixel 116 and the luminance value of the pixel 116 corresponding to the maximum difference value. In one example, the number of grouping can be calculated from the top-left pixel 116 of the display panel 200, i.e. the top-left pixel 116 is the first pixel 116, and the first number of grouping N of the first pixel 116 is calculated first. When calculating the next pixel 116 to the right of the first pixel 116, the first pixel 116 is taken as the first pixel, and the time frequency corresponding to N and the spatial frequency of the current pixel 116 are used to obtain the perceptible threshold corresponding to the current pixel 116.

[0442] If the perceivable threshold corresponding to the current pixel 116 is greater than or equal to the corresponding contrast, it indicates that the first grouping number of the first pixel is also applicable to the grouping number of the current pixel 116, and the first grouping number of the current pixel 116 can be determined as the first grouping number of the first pixel.

[0443] If the perceivable threshold corresponding to the current pixel 116 is less than the corresponding contrast, the grouping number can be increased on the basis of the first grouping number of the first pixel until the perceivable threshold corresponding to the current pixel 116 is greater than or equal to the corresponding contrast, so as to reduce the calculation amount and improve the efficiency.

[0444] After the number of scores of all pixels 116 is sequentially calculated, the first grouping number of all pixels 116 is finally obtained.

[0445] In some embodiments, the processing module 114 includes a grouping scheme control module 128, the grouping scheme control module 128 is electrically connected to the uniformity detection module 126, and the grouping scheme control module 128 is configured to:

[0446] According to the brightness of each pixel 116 and the current brightness distribution average of the display panel 200, the compensated light-emitting time of each pixel 116 is obtained;

[0447] The maximum difference value of the compensated light-emitting time of each pixel 116 and the surrounding pixels 116 is obtained to obtain all maximum difference values corresponding to all pixels 116;

[0448] A second pixel is obtained, which is the pixel 116 corresponding to the maximum maximum difference value in all maximum difference values.

[0449] According to the maximum maximum difference value, the distance between the second pixel and the pixel 116 corresponding to the maximum maximum difference value, the perceivable threshold is obtained;

[0450] According to the brightness of the second pixel and the brightness of the pixel 116 corresponding to the maximum maximum difference value, the contrast between the second pixel and the pixel 116 corresponding to the maximum maximum difference value is obtained.

[0451] The grouping number corresponding to the case that the perceivable threshold is greater than or equal to the contrast is determined as the first grouping number N of the white light-emitting time of the second pixel and the remaining pixels 116.

[0452] Therefore, the calculation amount can be reduced and the efficiency can be improved.

[0453] Specifically, in the present embodiment, all maximum difference values corresponding to all pixels 116 are first obtained, and then the maximum maximum difference value in all maximum difference values is obtained. The corresponding perceivable threshold is calculated by the maximum maximum difference value, and the corresponding contrast is calculated by the brightness of the second pixel and the brightness of the pixel 116 corresponding to the maximum maximum difference value.

[0454] Specifically, initially, no grouping, i.e. the first grouping number is 1. If the perceptible threshold corresponding to the second pixel is less than the contrast, the first grouping number is increased by 1, i.e. the first grouping number is more, a new time frequency and perceptible threshold are calculated until the perceptible threshold is greater than or equal to the contrast. Thus, the grouping number corresponding to the case that the perceptible threshold is greater than or equal to the contrast can be determined as the first grouping number N of the white light emitting time of the second pixel and the remaining pixels 116, thereby obtaining the first grouping number N of all the pixels 116.

[0455] In the embodiment, the first grouping number N of all the pixels 116 is the same.

[0456] In some embodiments, the processing module 114 comprises a grouping scheme control module 128, which is configured to:

[0457] According to the first grouping number N of the white light emitting time of each pixel 116 and the duty cycle of each pixel 116, the interval time between two adjacent emitting times is obtained, the start time of the first emitting time is the start time of each frame, and the lengths of the N emitting times are the same.

[0458] The start time of the remaining emitting times is obtained according to the interval time.

[0459] Thus, the N emitting times can be configured.

[0460] Specifically, please refer to FIG. 21, N=2, i.e. the first grouping number of the white light emitting time is 2, and the lengths of the two emitting times are the same, i.e. the white light emitting time is evenly divided into two groups in a frame time, and each pixel 116 is controlled to emit light according to the two emitting times in a frame time. The start time of the emitting time of the first emitting time W1 is the start time of each frame, and the interval time T between the second emitting time W2 and the first emitting time W1 is determined according to the first grouping number N of the white light emitting time of each pixel 116 and the duty cycle of each pixel 116.

[0461] Please refer to FIG. 22, N=3, i.e. the first grouping number of the white light emitting time is 3, and the lengths of the three emitting times are the same, i.e. the white light emitting time is evenly divided into three groups in a frame time, and each pixel 116 is controlled to emit light according to the three emitting times in a frame time. The start time of the emitting time of the first emitting time W1 is the start time of each frame, and the interval time T between the second emitting time W2 and the first emitting time W1, and the interval time T between the third emitting time W3 and the second emitting time W2 are determined according to the first grouping number N of the white light emitting time of each pixel 116 and the duty cycle of the control signal of each pixel 116.

[0462] Optionally, the interval time = 1 / frame rate x duty cycle / first group number.

[0463] In some embodiments, the display module 1100 includes a driving module 124 electrically connected to the display panel 200, the driving module 124 including a first counter and a second counter.

[0464] The second counter is configured to count the number of groups of the light emitting time.

[0465] The first counter is configured to generate gray scale count information, the gray scale count information being used to control the start and end of the light emitting time. When the first counter completes the gray scale count of one light emitting time, the second counter counts up by one for the number of groups of the light emitting time, until the second counter counts equal to the first group number of the light emitting time in one frame time.

[0466] Thus, the first counter and the second counter can be used to control the light emitting of each pixel 116 in N light emitting times.

[0467] Specifically, the first counter can be a gamma counter. The first counter counts 2 J -1, and J can refer to the number of bits of image gray scale coding. In one example, J = 8. The second counter can be a frame counter.

[0468] The first counter and the second counter can jointly generate corresponding control signals. Specifically, the number of light emitting times can be given by the grouping scheme control module 128 in a group number configuration signal and sent to the second counter. The second counter can receive the group number configuration signal for counting the number of groups. The first counter is used to generate gray scale count information, the gray scale count information being used to control the start (start time) and end (end time) of the light emitting time.

[0469] The time of each gray scale light emitting needs to generate a pulse width modulation signal PWM EM (light emitting signal) through the first counter and the second counter, wherein the high level is on and the low level is off, and the width of the high level can determine the length of the light emitting time. Please refer to FIG. 21 and FIG. 24, the count of the second counter shows that the white light emitting time is divided into two groups, i.e. N = 2.

[0470] The gray scale count information can be used to control the start and end of the light emitting time. Specifically, in one embodiment, please refer to FIG. 24, for the first light emitting time, when the gray scale signal received by the first counter is 3, the first counter can emit light for the gray scales whose count result is less than 3, i.e. gray scales 0-2, the start of the light emitting time is gray scale 0 and the end is gray scale 2. The pulse width of PWM EM is the length corresponding to gray scales 0-2. For the second light emitting time, when the gray scale signal received by the first counter is 3, the first counter can emit light for the gray scales whose count result is less than 3, i.e. gray scales 0-2, the start of the light emitting time is gray scale 0 and the end is gray scale 2. The pulse width of PWM EM is the length corresponding to gray scales 0-2, so as to control the start and end of the light emitting time.

[0471] When the first counter finishes the gray scale count of one light emitting time, the second counter counts up one for the number of groups of light emitting time and enters the count of the next group. In each group, the first counter counts from 0 to 2 J -1.

[0472] Optionally, the first counter and the second counter can be integrated in the driving module 124 or can be arranged in the peripheral circuit of the two-dimensional array of the plurality of pixels 116.

[0473] Please refer to FIG. 25, the present embodiment provides a control method of a display module 1100, the display module 1100 comprises a display panel 200, the display panel 200 comprises a plurality of pixels 116;

[0474] The control method comprises:

[0475] 01, obtaining the current brightness distribution mean value of the display panel 200;

[0476] 03, determining the first group number N of white light emitting time of each pixel 116 in one frame of time according to the current brightness distribution mean value of the display panel 200, N is a natural number greater than or equal to 2;

[0477] 05, controlling each pixel 116 to emit light in N light emitting times in one frame of time.

[0478] In some embodiments, step 03 comprises:

[0479] obtaining a preset group number A in one frame of time corresponding to the attribute of the display panel 200, and obtaining a second group number C in one frame of time determined according to the current brightness distribution mean value of the display panel 200;

[0480] determining the smaller one of A and C as the first group number N.

[0481] In some embodiments, obtaining the current average luminance distribution of the display panel 200 comprises:

[0482] controlling all the pixels 116 of the display panel 200 to emit light;

[0483] detecting the luminance of the light emitted by all the pixels 116 of the display panel 200;

[0484] determining the current average luminance distribution of the display panel 200 according to the luminance of the light emitted by each pixel 116 of the display panel 200.

[0485] In some embodiments, determining the current average luminance distribution of the display panel 200 according to the luminance of the light emitted by each pixel 116 of the display panel 200 comprises:

[0486] obtaining a two-dimensional luminance matrix of the display panel 200 according to the resolution of the display panel 200 and the luminance of the light emitted by all the pixels 116 of the display panel 200;

[0487] obtaining the current average luminance distribution of the display panel 200 according to the two-dimensional luminance matrix of the display panel 200.

[0488] In some embodiments, step 03 comprises:

[0489] obtaining the compensated light-emitting time of each pixel 116 according to the luminance of each pixel 116 and the average luminance distribution of the display panel 200;

[0490] obtaining the maximum difference between the compensated light-emitting time of each pixel 116 and the compensated light-emitting time of the surrounding pixels 116;

[0491] obtaining the perceptible threshold according to the maximum difference and the distance between each pixel 116 and the pixel 116 corresponding to the maximum difference;

[0492] obtaining the contrast between each pixel 116 and the pixel 116 corresponding to the maximum difference according to the luminance of each pixel 116 and the luminance of the pixel 116 corresponding to the maximum difference;

[0493] determining the first grouping number N of the white light-emitting time of each pixel 116 as the grouping number corresponding to the condition that the perceptible threshold is greater than or equal to the contrast.

[0494] In some embodiments, step 03 comprises:

[0495] obtaining the perceptible threshold and the contrast corresponding to the current pixel 116 according to the first grouping number of the first pixel, the maximum difference corresponding to the current pixel 116, and the distance;

[0496] When the perceivable threshold corresponding to the current pixel 116 is greater than or equal to the corresponding contrast, the grouping number of the current pixel 116 is determined as the first grouping number of the first pixel;

[0497] When the perceivable threshold corresponding to the current pixel 116 is less than the corresponding contrast, the grouping number is increased on the basis of the first grouping number of the first pixel until the perceivable threshold corresponding to the current pixel 116 is greater than or equal to the corresponding contrast.

[0498] In some embodiments, step 03 comprises:

[0499] According to the brightness of each pixel 116 and the current brightness distribution average of the display panel 200, the compensated light-emitting time of each pixel 116 is obtained;

[0500] The maximum difference value of the compensated light-emitting time of each pixel 116 and the surrounding pixels 116 is obtained to obtain all maximum difference values corresponding to all pixels 116;

[0501] A second pixel is obtained, which is the pixel 116 corresponding to the maximum maximum difference value in all maximum difference values;

[0502] According to the maximum maximum difference value, the second pixel, and the distance between the pixel 116 corresponding to the maximum maximum difference value, the perceivable threshold is obtained;

[0503] According to the brightness of the second pixel and the brightness of the pixel 116 corresponding to the maximum maximum difference value, the contrast between the second pixel and the pixel 116 corresponding to the maximum maximum difference value is obtained;

[0504] The grouping number corresponding to the case that the perceivable threshold is greater than or equal to the contrast is determined as the first grouping number N of the white light-emitting time of the second pixel and the remaining pixels 116.

[0505] In some embodiments, the perceivable threshold is positively correlated with the time frequency, and the time frequency is positively correlated with N.

[0506] In some embodiments, when the lengths of the N light-emitting times are different, the time frequency is the minimum value of all time frequencies corresponding to the N light-emitting times.

[0507] In some embodiments, step 03 comprises:

[0508] According to the first grouping number N of the white light-emitting time of each pixel 116 and the duty cycle of each pixel 116, the interval time between adjacent two light-emitting times is obtained, the starting time of the first light-emitting time is the starting time of each frame, and the lengths of the N light-emitting times are the same;

[0509] The starting time of the remaining light-emitting time is obtained according to the interval time.

[0510] In some embodiments, the display module 1100 comprises a first counter and a second counter.

[0511] The control method comprises:

[0512] The second counter counts the number of groups of the light-emitting time;

[0513] The first counter generates gray scale count information, the gray scale count information being used to control the start and end of the light-emitting time, when the first counter completes the gray scale count of one light-emitting time, the second counter counts the number of groups of the light-emitting time by one, until the count of the second counter equals to the first number of groups of the light-emitting time in one frame time.

[0514] In some embodiments, the length of the light-emitting time is determined by the pulse width modulation signal of each pixel 116.

[0515] The embodiments of the present application provide a computer readable storage medium, the computer readable storage medium storing a computer program, the computer program being executed by a processor to implement the control method of any of the above embodiments.

[0516] Specifically, in one embodiment, the control method implemented by the computer program executed by the processor comprises:

[0517] 01, obtaining the current brightness distribution mean value of the display panel 200;

[0518] 03, determining the first number of groups of the white light-emitting time of each pixel 116 in one frame time according to the current brightness distribution mean value of the display panel 200, N being a natural number greater than or equal to 2;

[0519] 05, controlling each pixel 116 to emit light in N light-emitting times in one frame time.

[0520] The embodiments of the present application provide a display device comprising the display module 1100 of any of the above embodiments.

[0521] In the above control method, computer readable storage medium and display device, the first number of groups of the white light-emitting time of each pixel 116 in one frame time can be determined according to the current brightness distribution mean value of the display panel 200, and each pixel 116 is controlled to emit light in N light-emitting times in one frame time, so that the frequency of the white light-emitting time is improved in one frame time, the light-emitting phase of the pixels 116 is synchronized, and the instantaneous noise is reduced or avoided to a certain extent, the noise in the time domain is reduced, and the user's visual experience is improved.

[0522] Specifically, the display device includes, but is not limited to, a Micro LED display device, a DLP display device, an LCoS display device, a Micro OLED display device, and the like display device using digital modulation technology. The display device can be applied to, but is not limited to, an AR / VR device.

[0523] It should be noted that the above explanations and descriptions of the embodiments and beneficial effects of the display module 1100 also apply to the control method, the computer readable storage medium, and the display device of the present embodiment, and to avoid redundancy, they will not be described in detail here.

[0524] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0525] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, combinations, modifications, replacements and variations of the embodiments can be made without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A display module, characterized by The application relates to a display device, comprising: a light-emitting area, wherein the light-emitting area comprises a plurality of pixels, each pixel comprises a red light-emitting component, a green light-emitting component and a blue light-emitting component; and a control module, which is electrically connected to the light-emitting area, and is configured to adjust the start and end points of the light-emitting time of each color light-emitting component in a frame time, so that the phases of the light-emitting areas of red light, green light and blue light are relatively matched in time sequence, thereby avoiding or reducing the color break phenomenon. The start and end points of the light-emitting time of the light-emitting component with the shortest light-emitting time are adjusted in a frame time, so that the phases of the light-emitting areas of red light, green light and blue light are relatively matched in time sequence. The start point of the light-emitting time of the light-emitting component with the shortest light-emitting time is staggered with the start points of the light-emitting time of the remaining light-emitting components in a frame time.

2. The display module of claim 1, wherein, The start and end points of the light-emitting time of the light-emitting component with the shortest light-emitting time are adjusted in a frame time, so that the light-emitting time of the light-emitting component with the shortest light-emitting time is aligned with the middle of the light-emitting time of the remaining light-emitting components, and the start point of the light-emitting time of the light-emitting component with the shortest light-emitting time is staggered with the start points of the light-emitting time of the remaining light-emitting components.

3. The display module of claim 2, wherein, The control module comprises a first counter, which is configured to generate gray scale count information of the light-emitting component with the shortest light-emitting time, and the gray scale count information is used to adjust the start and end points of the light-emitting time of the light-emitting component with the shortest light-emitting time, so that the light-emitting time of the light-emitting component with the shortest light-emitting time is aligned with the middle of the light-emitting time of the remaining light-emitting components.

4. The display module of claim 3, wherein, The adjustment amount of the start point of the light-emitting time of the light-emitting component with the shortest light-emitting time is t1, and t1 satisfies 0 < t1 <= (D1-D2) / 2, wherein D1 is the duty cycle of the light-emitting component with the longest light-emitting time, and D2 is the duty cycle of the light-emitting component with the shortest light-emitting time.

5. The display module of claim 4, wherein, The start and end points of the light-emitting time of the three light-emitting components are adjusted in a frame time, so that the phases of the light-emitting areas of red light, green light and blue light are relatively matched in time sequence.

6. The display module of claim 2, wherein, The start and end points of the light-emitting time of the three light-emitting components are adjusted in a frame time, so that the light-emitting time of the light-emitting component with the shortest light-emitting time is aligned with the middle of the light-emitting time of the remaining light-emitting components.

7. The display module of claim 1, wherein, The light-emitting time of each color light-emitting component is grouped in a frame time, and the start and end points of the light-emitting time of each color light-emitting component are adjusted.

8. The display module of claim 7, wherein, The light-emitting time of the light-emitting component with the shortest light-emitting time is grouped into a plurality of light-emitting sub-times in a frame time, so that the phases of the light-emitting areas of red light, green light and blue light are relatively matched in time sequence.

9. The display module of claim 1, wherein, The light-emitting time of the light-emitting component with the shortest light-emitting time is evenly divided into at least two light-emitting sub-times in a frame time.

10. The display module of claim 9, wherein, The control module comprises a first counter and a second counter.

11. The display module of claim 10, wherein, The second counter is configured to count the number of the light-emitting sub-times.

12. The display module of claim 11, wherein, The first counter is configured to generate gray scale count information, and when the first counter completes the gray scale count of one light-emitting sub-time, the second counter counts the number of the light-emitting sub-times by one, until the count of the second counter is equal to the total number of the light-emitting sub-times in a frame time. The light-emitting time of the light-emitting component with the shortest light-emitting time is not evenly divided into at least two light-emitting sub-times in a frame time. ​ 13. The display module of claim 10, wherein, ​ 14. The display module of claim 10 or 13, wherein, The light emitting time of the rest of the light emitting elements is evenly or unevenly divided into at least two light emitting sub-times within a frame time.

15. The display module of claim 10 or 13, wherein, The light emitting sub-times of the light emitting element with the shortest light emitting time are evenly distributed within a frame time.

16. The display module of claim 10 or 13, wherein, Within a frame time, the start of the first light emitting sub-time of the light emitting element with the shortest light emitting time is the same as the start of the light emitting time of the rest of the light emitting elements, and the end of the last light emitting sub-time is the same as the end of the light emitting time of the rest of the light emitting elements.

17. The display module of claim 16, wherein, The control module comprises a first counter and a second counter; The second counter is configured to count the number of light emitting sub-times; The first counter is configured to generate gray scale count information, which is used to make the start of the first light emitting sub-time the same as the start of the light emitting time of the rest of the light emitting elements, and the end of the last light emitting sub-time the same as the end of the light emitting time of the rest of the light emitting elements; When the first counter completes the gray scale count of one light emitting sub-time, the second counter counts the number of light emitting sub-times by one, until the count of the second counter is equal to the total number of light emitting sub-times within a frame time.

18. The display module of claim 10 or 13, wherein, Within a frame time, the start of the light emitting sub-time is adjusted by an amount t2, t2 satisfies 0 < t2 ≤ (D1-D2) / 2, where D1 is the duty cycle of the light emitting element with the longest light emitting time, and D2 is the duty cycle of the light emitting element with the shortest light emitting time, and the end of the last light emitting sub-time is not later than the end of the light emitting time of the light emitting element with the longest light emitting time.

19. The display module of claim 1, wherein, The light emitting area comprises a left eye light emitting area and a right eye light emitting area, and the control module is configured to adjust the start and end of the light emitting time of each color light emitting element in the left eye light emitting area and / or the right eye light emitting area within a frame time, so that the phases of the light emitting areas of red light, green light and blue light in time sequence are relatively matched.

20. The display module of claim 19, wherein, The start and end of the light emitting time of the light emitting element with the shortest light emitting time in the left eye light emitting area and / or the right eye light emitting area are adjusted, so that the start of the light emitting time of the light emitting element with the shortest light emitting time in the left eye light emitting area is staggered with the start of the light emitting time of the light emitting element with the shortest light emitting time in the right eye light emitting area.

21. The display module of claim 20, wherein, The light emitting time of the light emitting element with the shortest light emitting time in the left eye light emitting area and / or the right eye light emitting area is divided into at least two light emitting sub-times.

22. The display module of claim 20, wherein, The light emitting time of the light emitting element with the shortest light emitting time in one of the left eye light emitting area and the right eye light emitting area is divided into at least two light emitting sub-times, and the start of the light emitting time of the light emitting element with the shortest light emitting time in the other of the left eye light emitting area and the right eye light emitting area is staggered with the start of the light emitting time of the rest of the light emitting elements.

23. The display module of any of claims 1-22, wherein, The red light emitting component, the green light emitting component and the blue light emitting component are modulated in brightness by one or more PWM pulse forms, at least two of the pulse starting points corresponding to the red light emitting component, the green light emitting component and the blue light emitting component are different, and / or at least two of the pulse ending points are different, to achieve phase relative matching.

24. The display module of any of claims 1-22, wherein, The display module comprises a sensor electrically connected to the control module, the sensor is configured to detect an environmental parameter, and the control module is configured to adjust the starting point and the ending point of the light emitting time of each color light emitting component within a frame time according to the environmental parameter, so that the light emitting intervals of red light, green light and blue light are phase- relatively matched in time sequence to avoid or alleviate the color break phenomenon, and the sensor comprises at least one of a temperature sensor and an ambient light sensor.

25. A control method of a display module, characterized by, The display module comprises: a light emitting area comprising a plurality of pixels, each pixel comprising a red light emitting component, a green light emitting component and a blue light emitting component; The control method comprises: adjusting the starting point and the ending point of the light emitting time of each color light emitting component within a frame time, so that the light emitting intervals of red light, green light and blue light are phase- relatively matched in time sequence to avoid or alleviate the color break phenomenon.

26. The control method according to claim 25, wherein Within a frame time, the starting point and the ending point of the light emitting time of the light emitting component with the shortest light emitting time are adjusted, so that the light emitting intervals of red light, green light and blue light are phase- relatively matched in time sequence.

27. The control method according to claim 26, wherein Within a frame time, the starting point of the light emitting time of the light emitting component with the shortest light emitting time is staggered with the starting point of the light emitting time of the remaining light emitting components.

28. The control method according to claim 27, wherein Within a frame time, the starting point and the ending point of the light emitting time of the light emitting component with the shortest light emitting time are adjusted, so that the light emitting time of the light emitting component with the shortest light emitting time is aligned with the middle of the light emitting time of the remaining light emitting components, and the starting point of the light emitting time of the light emitting component with the shortest light emitting time is staggered with the starting point of the light emitting time of the remaining light emitting components.

29. The control method according to claim 28, wherein The display module comprises a first counter, and the control method comprises: the first counter generates gray scale count information of the light emitting component with the shortest light emitting time, and the gray scale count information is used to adjust the starting point and the ending point of the light emitting time of the light emitting component with the shortest light emitting time, so that the light emitting time of the light emitting component with the shortest light emitting time is aligned with the middle of the light emitting time of the remaining light emitting components.

30. The control method according to claim 26, wherein The adjustment amount of the starting point of the light emitting time of the light emitting component with the shortest light emitting time is t1, and t1 satisfies 0 31. The control method according to claim 25, wherein Within a frame time, the starting point and the ending point of the light emitting time of the three light emitting components are adjusted, so that the light emitting intervals of red light, green light and blue light are phase- relatively matched in time sequence.

32. The control method according to claim 31, wherein Within a frame time, the starting point and the ending point of the light emitting time of the three light emitting components are adjusted, so that the light emitting time of the light emitting component with the shortest light emitting time is aligned with the middle of the light emitting time of the remaining light emitting components.

33. The control method of claim 25, wherein Within a frame time, the light emitting time of each color light emitting component is grouped, and then the starting point and the ending point of the light emitting time of each color light emitting component are adjusted.

34. The control method according to claim 33, wherein The light emitting time of the light emitting component with the shortest light emitting time is grouped into multiple light emitting sub-times in a frame time, so that the phases of the light emitting intervals of red light, green light and blue light in time sequence are relatively matched.

35. The control method according to claim 34, wherein The light emitting time of the light emitting component with the shortest light emitting time is evenly divided into at least two light emitting sub-times in a frame time.

36. The control method according to claim 35, wherein The display module comprises a first counter and a second counter. The control method comprises: the second counter counting the number of light emitting sub-times. The first counter generates gray scale count information, and when the first counter completes the gray scale count of one light emitting sub-time, the second counter counts one more light emitting sub-time, until the second counter counts the total number of light emitting sub-times in a frame time.

37. The control method of claim 34, wherein The light emitting time of the light emitting component with the shortest light emitting time is not evenly divided into at least two light emitting sub-times in a frame time.

38. The control method according to claim 34 or 37, characterized by, The light emitting time of the remaining light emitting components is evenly or unevenly divided into at least two light emitting sub-times in a frame time.

39. The control method according to claim 34 or 37, characterized by, In a frame time, the multiple light emitting sub-times of the light emitting component with the shortest light emitting time are evenly distributed.

40. The control method according to claim 34 or 37, characterized by, In the multiple light emitting sub-times of the light emitting component with the shortest light emitting time, the start point of the first light emitting sub-time is the same as the start point of the light emitting time of the remaining light emitting components, and the end point of the last light emitting sub-time is the same as the end point of the light emitting time of the remaining light emitting components.

41. The control method according to claim 40, wherein The display module comprises a first counter and a second counter. The control method comprises: the second counter counting the number of light emitting sub-times. The first counter generates gray scale count information, and the gray scale count information is used to make the start point of the first light emitting sub-time the same as the start point of the light emitting time of the remaining light emitting components, and the end point of the last light emitting sub-time the same as the end point of the light emitting time of the remaining light emitting components. When the first counter completes the gray scale count of one light emitting sub-time, the second counter counts one more light emitting sub-time, until the second counter counts the total number of light emitting sub-times in a frame time.

42. The control method according to claim 34 or 37, characterized by, In the multiple light emitting sub-times of the light emitting component with the shortest light emitting time, the start point of the light emitting sub-time is adjusted by an amount t2, t2 satisfies 0 < t2 ≤ (D1-D2) / 2, where D1 is the duty cycle of the light emitting component with the longest light emitting time, D2 is the duty cycle of the light emitting component with the shortest light emitting time, and the end point of the last light emitting sub-time is not later than the end point of the light emitting time of the light emitting component with the longest light emitting time.

43. The control method of claim 25, wherein The light emitting area comprises a left eye light emitting area and a right eye light emitting area, and the control method comprises: adjusting the start point and the end point of the light emitting time of each color light emitting component of the left eye light emitting area and / or adjusting the start point and the end point of the light emitting time of each color light emitting component of the right eye light emitting area in a frame time, so that the phases of the light emitting intervals of red light, green light and blue light in time sequence are relatively matched.

44. The control method according to claim 43, wherein The start and end points of the light emitting time of the light emitting element with the shortest light emitting time in the left eye light emitting area are adjusted, and / or the start and end points of the light emitting time of the light emitting element with the shortest light emitting time in the right eye light emitting area are adjusted, so that the start point of the light emitting time of the light emitting element with the shortest light emitting time in the left eye light emitting area is staggered with the start point of the light emitting time of the light emitting element with the shortest light emitting time in the right eye light emitting area.

45. The control method of claim 44, wherein, The light emitting time of the light emitting element with the shortest light emitting time in the left eye light emitting area is divided into at least two light emitting sub-times, and / or the light emitting time of the light emitting element with the shortest light emitting time in the right eye light emitting area is divided into at least two light emitting sub-times.

46. The control method of claim 44, wherein The light emitting time of the light emitting element with the shortest light emitting time in one of the left eye light emitting area and the right eye light emitting area is divided into at least two light emitting sub-times, and the start point of the light emitting time of the light emitting element with the shortest light emitting time in the other of the left eye light emitting area and the right eye light emitting area is staggered with the start point of the light emitting time of the remaining light emitting element.

47. The control method of any one of claims 25-46, wherein, The red light emitting element, the green light emitting element and the blue light emitting element are modulated in brightness by one or more PWM pulse forms, and at least one of the corresponding pulse start points and end points of the red light emitting element, the green light emitting element and the blue light emitting element is different to achieve phase relative matching.

48. The control method of any one of claims 25-46, wherein, The display module includes a sensor configured to detect an environmental parameter, the sensor including at least one of a temperature sensor and an ambient light sensor, and the control method includes: According to the environmental parameter, the start and end points of the light emitting time of each color light emitting element are adjusted within a frame time, so that the phases of the red light emitting area, the green light emitting area and the blue light emitting area are relatively matched in time sequence to avoid or alleviate the phenomenon of color breakage.

49. A display module, characterized by It includes: A display panel including a plurality of pixels; A processing module electrically connected to the display panel, the processing module configured to: Obtain the current brightness distribution average of the display panel; According to the current brightness distribution average of the display panel, determine the first grouping number N of white light emitting time of each pixel within a frame time, N is a natural number greater than or equal to 2; Control each pixel to emit light in N light emitting time within a frame time.

50. The display module of claim 49, wherein, The processing module is configured to: Obtain the preset grouping number A corresponding to the attribute of the display panel within a frame time, and obtain the second grouping number C within a frame time determined according to the current brightness distribution average of the display panel; Determine the smaller one of A and C as the first grouping number N.

51. The display module of claim 49, wherein, The processing module includes a uniformity detection module and a driving module, and the driving module is configured to control the display panel to emit light. The uniformity detection module is configured to detect the light emitting brightness of all pixels of the display panel. According to the light emitting brightness of each pixel of the display panel, the current brightness distribution average of the display panel is determined.

52. The display module of claim 51, wherein, The uniformity detection module includes a data processing module, and the data processing module is configured to: According to the resolution of the display panel and the light emitting brightness of all pixels of the display panel, a two-dimensional brightness matrix of the display panel is obtained; According to a two-dimensional brightness matrix of the display panel, a current brightness distribution mean value of the display panel is obtained.

53. The display module of claim 52, wherein, The processing module comprises a grouping scheme control module electrically connected to the uniformity detection module, and the grouping scheme control module is configured to: According to the brightness of each pixel and the current brightness distribution mean value of the display panel, a compensated light-emitting time of each pixel is obtained. A maximum difference value of the compensated light-emitting time of each pixel and surrounding pixels is obtained. According to the maximum difference value and the distance between each pixel and the pixel corresponding to the maximum difference value, a perceptible threshold value is obtained. According to the brightness of each pixel and the brightness of the pixel corresponding to the maximum difference value, a contrast ratio of each pixel and the pixel corresponding to the maximum difference value is obtained. When the perceptible threshold value is greater than or equal to the contrast ratio, a first grouping number N of white light-emitting time of each pixel is determined.

54. The display module of claim 53, wherein, The grouping scheme control module is configured to: According to the first grouping number of the first pixel and the maximum difference value and the distance corresponding to the current pixel, a perceptible threshold value and a contrast ratio corresponding to the current pixel are obtained. When the perceptible threshold value corresponding to the current pixel is greater than or equal to the corresponding contrast ratio, the grouping number of the current pixel is determined as the first grouping number of the first pixel. When the perceptible threshold value corresponding to the current pixel is less than the corresponding contrast ratio, the grouping number is increased on the basis of the first grouping number of the first pixel until the perceptible threshold value corresponding to the current pixel is greater than or equal to the corresponding contrast ratio.

55. The display module of claim 52, wherein, The processing module comprises a grouping scheme control module electrically connected to the uniformity detection module, and the grouping scheme control module is configured to: According to the brightness of each pixel and the current brightness distribution mean value of the display panel, a compensated light-emitting time of each pixel is obtained. A maximum difference value of the compensated light-emitting time of each pixel and surrounding pixels is obtained to obtain all maximum difference values corresponding to all pixels. A second pixel is obtained, which is the pixel corresponding to the maximum maximum difference value among all maximum difference values. According to the maximum maximum difference value and the distance between the second pixel and the pixel corresponding to the maximum maximum difference value, a perceptible threshold value is obtained. According to the brightness of the second pixel and the brightness of the pixel corresponding to the maximum maximum difference value, a contrast ratio of the second pixel and the pixel corresponding to the maximum maximum difference value is obtained. When the perceptible threshold value is greater than or equal to the contrast ratio, a first grouping number N of white light-emitting time of the second pixel and the remaining pixels is determined.

56. The display module of any one of claims 53 to 55, wherein, The perceptible threshold value and the time frequency are positively correlated, and the time frequency and N are positively correlated.

57. The display module of claim 56, wherein, When the lengths of N light-emitting times are different, the time frequency is the minimum value of all time frequencies corresponding to the N light-emitting times.

58. The display module of claim 49, wherein, The processing module comprises a grouping scheme control module, and the grouping scheme control module is configured to: According to the first grouping number N of white light emitting time of each pixel and the duty cycle of each pixel, an interval time between two adjacent emitting times is obtained, the starting time of the first emitting time is the starting time of each frame, and the lengths of the N emitting times are the same; According to the interval time, the starting time of the remaining emitting time is obtained.

59. The display module of claim 49, wherein, 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. The second counter is configured to count the grouping number of the emitting time. The first counter is configured to generate gray scale count information, and the gray scale count information is used to control the start and end points of the emitting time. When the first counter completes the gray scale count of one emitting time, the second counter counts the grouping number of the emitting time by one, and the counting of the second counter is equal to the first grouping number of the emitting time in one frame time.

60. The display module of any of claims 49-59, wherein, The lengths of the emitting times are determined by pulse width modulation signals of each pixel.

61. A control method of a display module, characterized by, The display module includes a display panel including a plurality of pixels. The control method includes: obtaining the current brightness distribution average of the display panel; determining the first grouping number N of white light emitting time of each pixel in one frame time according to the current brightness distribution average of the display panel, N being a natural number greater than or equal to 2; controlling each pixel to emit light in N emitting times in one frame time.

62. The control method of claim 61, wherein Determining the first grouping number N of white light emitting time of each pixel in one frame time according to the current brightness distribution average of the display panel includes: obtaining a preset grouping number A corresponding to the attribute of the display panel in one frame time, and obtaining a second grouping number C determined according to the current brightness distribution average of the display panel in one frame time; determining the smaller one of A and C as the first grouping number N.

63. The control method of claim 61, wherein Obtaining the current brightness distribution average of the display panel includes: controlling all pixels of the display panel to emit light; detecting the emitting brightness of all pixels of the display panel; determining the current brightness distribution average of the display panel according to the emitting brightness of each pixel of the display panel.

64. The control method of claim 63, wherein Determining the current brightness distribution average of the display panel according to the emitting brightness of each pixel of the display panel includes: obtaining a two-dimensional brightness matrix of the display panel according to the resolution of the display panel and the emitting brightness of all pixels of the display panel; obtaining the current brightness distribution average of the display panel according to the two-dimensional brightness matrix of the display panel.

65. The control method of claim 64, wherein Determining the first grouping number N of white light emitting time of each pixel in one frame time according to the current brightness distribution average of the display panel includes: obtaining the compensated emitting time of each pixel according to the brightness of each pixel and the brightness distribution average of the display panel; obtaining the maximum difference value of the compensated emitting time between each pixel and the surrounding pixels; obtaining a perceptible threshold value according to the maximum difference value and the distance between each pixel and the pixel corresponding to the maximum difference value; According to the brightness of each pixel and the brightness of the pixel corresponding to the maximum difference value, the contrast of each pixel and the pixel corresponding to the maximum difference value is obtained; The first grouping number N of the white light emitting time of each pixel is determined as the grouping number corresponding to the perceptible threshold being greater than or equal to the contrast.

66. The control method of claim 65, wherein According to the current brightness distribution mean of the display panel, the first grouping number N of the white light emitting time of each pixel within a frame time includes: According to the first grouping number of the first pixel and the maximum difference value and the distance corresponding to the current pixel, the perceptible threshold and the contrast corresponding to the current pixel are obtained; When the perceptible threshold corresponding to the current pixel is greater than or equal to the corresponding contrast, the grouping number of the current pixel is determined as the first grouping number of the first pixel; When the perceptible threshold corresponding to the current pixel is less than the corresponding contrast, the grouping number is increased on the basis of the first grouping number of the first pixel until the perceptible threshold corresponding to the current pixel is greater than or equal to the corresponding contrast.

67. The control method of claim 64, wherein According to the current brightness distribution mean of the display panel, the first grouping number N of the white light emitting time of each pixel within a frame time includes: According to the brightness of each pixel and the current brightness distribution mean of the display panel, the compensated emitting time of each pixel is obtained; The maximum difference value of the compensated emitting time of each pixel and the surrounding pixels is obtained to obtain all maximum difference values corresponding to all pixels; A second pixel is obtained, which is the pixel corresponding to the maximum maximum difference value among all maximum difference values; According to the maximum maximum difference value, the distance between the second pixel and the pixel corresponding to the maximum maximum difference value, the perceptible threshold is obtained; According to the brightness of the second pixel and the brightness of the pixel corresponding to the maximum maximum difference value, the contrast of the second pixel and the pixel corresponding to the maximum maximum difference value is obtained; The first grouping number N of the white light emitting time of the second pixel and the remaining pixels is determined as the grouping number corresponding to the perceptible threshold being greater than or equal to the contrast.

68. The control method of any one of claims 65-67, wherein, The perceptible threshold and the time frequency are positively correlated, and the time frequency and N are positively correlated.

69. The control method of claim 68, wherein When the lengths of the N emitting times are different, the time frequency is the minimum value of all time frequencies corresponding to the N emitting times.

70. The control method of claim 61, wherein The control method includes: According to the first grouping number N of the white light emitting time of each pixel and the duty cycle of each pixel, the interval time between adjacent two emitting times is obtained, the starting time of the first emitting time is the starting time of each frame, and the lengths of the N emitting times are the same; According to the interval time, the starting time of the remaining emitting times is obtained.

71. The control method of claim 61, wherein The display module includes a first counter and a second counter; The control method includes: The second counter counts the grouping number of the emitting time; The second counter counts the grouping number of the emitting time; The first counter generates gray scale count information used to control the start and end of the light emitting time. After the first counter completes a gray scale count of a light emitting time, the second counter counts up by one for the number of groups of light emitting times until the second counter counts the number of light emitting times equal to the first number of groups of light emitting times in a frame time.

72. The control method of any one of claims 61-71, wherein, The length of the light emitting time is determined by a pulse width modulation signal for each of the pixels.

73. A computer-readable storage medium, comprising: A computer program is stored on the computer readable storage medium, and when executed by a processor, implements the control method of any one of claims 25-48, or the control method of any one of claims 61-72.

74. A display device comprising: A display module comprising the display module of any one of claims 1-24, or the display module of any one of claims 49-60.

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