Light leakage detection method and device of micro LED panel, electronic equipment and medium

Abstract

The application relates to the technical field of image processing, in particular to a micro-LED panel light leakage detection method and device, electronic equipment and medium. The micro-LED panel light leakage detection method comprises the following steps: receiving a brightness detection image sent by a collection device, and performing image brightness adjustment on the brightness detection image based on the relative position of the collection device and each lamp bead on the micro-LED panel to determine a target brightness image; performing gray scale processing on the target brightness image to determine a target brightness gray scale image corresponding to the target brightness image; analyzing the target brightness gray scale image to determine brightness distribution information, and dividing the target brightness gray scale image into a plurality of brightness distribution regions according to the brightness distribution information; determining the abnormal average brightness of each brightness distribution region according to the brightness distribution information and the plurality of brightness distribution regions, so that the abnormal brightness distribution region is determined based on the abnormal average brightness and a preset brightness threshold, and the detection accuracy of the light leakage in a small range of the micro-LED panel is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of image processing, in particular to a micro-LED panel light leakage detection method and device, electronic equipment and medium. BACKGROUND

[0002] Mini-LED panel is the abbreviation of Mini-LED panel. Mini-LED is a display technology that divides LED backlight source into small size LED dot matrix, each LED dot matrix is called a Mini-LED, with smaller LED size and higher brightness and contrast performance. With the development of science and technology, Mini-LED is widely used in the field of display screens. The micro-LED panel can be installed in the micro-LED backlight liquid crystal display. The micro-LED panel is used as a backlight source to illuminate the display screen. In this way, the micro-LED backlight liquid crystal display can display images, text, video and other content. After the micro-LED panel is installed in the micro-LED backlight liquid crystal display, if the micro-LED panel leaks light, it will cause the edge or corner area of the micro-LED backlight liquid crystal display to have uneven brightness and some areas to be too bright or too dark.

[0003] In related technologies, uniformity detection tools or software can be used to test the screen of the micro-LED backlight liquid crystal display. If there is obvious brightness unevenness or excessive area, it indicates that there may be light leakage. However, if there is a small range of light leakage on the micro-LED panel, the current light leakage detection method may miss the detection, resulting in low detection accuracy for the small range of light leakage of the micro-LED panel. SUMMARY

[0004] In order to improve the accuracy of light leakage detection of the micro-LED panel, the present application provides a micro-LED panel light leakage detection method, device, electronic equipment and medium.

[0005] In a first aspect, the present application provides a micro-LED panel light leakage detection method, comprising:

[0006] Receiving a brightness detection image sent by a collection device, and based on the relative position of the collection device and each lamp bead on the micro-LED panel, adjusting the image brightness of the brightness detection image to determine a target brightness image;

[0007] Performing gray scale processing on the target brightness image to determine a target brightness gray scale image corresponding to the target brightness image;

[0008] Analyzing the target brightness gray scale image to determine brightness distribution information, and dividing the target brightness gray scale image into several brightness distribution regions according to the brightness distribution information;

[0009] According to the luminance distribution information and the plurality of luminance distribution regions, an abnormal average luminance of each luminance distribution region is determined, so as to determine an abnormal luminance distribution region based on the abnormal average luminance and a preset luminance threshold, and a region average luminance of the abnormal luminance distribution region is the abnormal average luminance.

[0010] By adopting the technical solution, the distance between the collection device and the different lamp beads may cause a certain luminance loss, so the luminance of the luminance detection image may not be accurate. The relative position between the collection device and each lamp bead on the micro-LED panel can be used to adjust the luminance of the luminance detection image, restore the real light-emitting condition. The color image is converted into a gray image through gray processing of the adjusted target luminance image, so as to further process and analyze the luminance distribution information of the target, and then the target luminance gray image is divided into regions, each luminance distribution region is analyzed in detail, the abnormal average luminance is obtained, and it is determined that the micro-LED panel has light leakage, and the detection accuracy of the light leakage in a small range of the micro-LED panel is improved.

[0011] Optionally, the image luminance adjustment includes pixel compensation; and the image luminance adjustment of the luminance detection image based on the relative position between the collection device and each lamp bead on the micro-LED panel to determine the target luminance image includes:

[0012] Based on the relative position between the collection device and each lamp bead on the micro-LED panel, a light propagation path corresponding to each lamp bead is determined;

[0013] The light intensity loss corresponding to the light propagation path is obtained;

[0014] According to the light intensity loss, the pixel compensation of the luminance detection image is performed to determine the target luminance image.

[0015] By adopting the technical solution, the relative position between the collection device and each lamp bead on the micro-LED panel is considered to determine the light propagation path corresponding to each lamp bead, the position of each lamp bead and the distance to the collection device are considered, and the luminance of the image is adjusted more accurately. Then the light intensity loss corresponding to the light propagation path is obtained, the loss that may occur in the propagation process of light is considered, and the luminance of the image is adjusted more accurately. According to the light intensity loss, the pixels of the image are adjusted according to the light intensity loss, and the target luminance image is determined more accurately. The real light-emitting condition can be restored more accurately, the luminance distribution condition can be determined more carefully, the abnormal luminance distribution region can be recognized more accurately, and the accuracy and detection effect of the light leakage detection of the micro-LED panel are improved more effectively.

[0016] Optionally, the determining of the abnormal brightness distribution region based on the abnormal average brightness and the preset brightness threshold comprises:

[0017] For each brightness distribution region, the brightness of the brightness distribution region is determined to be abnormal brightness according to the region average brightness corresponding to the brightness distribution region and the preset brightness threshold.

[0018] If the brightness of the brightness distribution region is abnormal brightness, the brightness distribution region is analyzed to determine a plurality of sub-brightness distribution information.

[0019] The abnormal characteristics of the abnormal brightness are determined by analyzing the plurality of sub-brightness distribution information, and the abnormal characteristics include local brightness abnormality and continuous brightness abnormality.

[0020] If the abnormal characteristics of the abnormal brightness are local brightness abnormality, the brightness distribution region is determined to be an abnormal brightness distribution region.

[0021] By using the above technical solution, for each brightness distribution region, the brightness of the region is determined to be abnormal brightness according to the corresponding region average brightness and the preset brightness threshold, which can quickly and effectively detect the distribution region of brightness abnormality, and improve the accuracy of light leakage detection. If the brightness of a certain brightness distribution region is determined to be abnormal brightness, the region is analyzed to determine a plurality of sub-brightness distribution information, and the cause of the brightness abnormality is further analyzed to provide a reference for subsequent repair and improvement. According to the plurality of sub-brightness distribution information, the abnormal characteristics of the abnormal brightness can be analyzed, including local brightness abnormality and continuous brightness abnormality, which can carefully study the manifestation form of the brightness abnormality to provide accurate guidance for repair and improvement. If the abnormal characteristics of the abnormal brightness are local brightness abnormality, the brightness distribution region can be determined to be an abnormal brightness distribution region, which can accurately identify the region of local brightness abnormality, thereby effectively improving the accuracy and detection effect of light leakage detection.

[0022] Optionally, the method further comprises:

[0023] Obtaining the light-emitting properties and the use time length of the lamp beads on the micro-LED panel;

[0024] Determining the light leakage influence range of the lamp beads according to the light-emitting properties and the use time length;

[0025] Based on the light leakage influence range, the abnormal brightness distribution region is adjusted to determine a target brightness analysis region, and the target brightness analysis region is analyzed to determine a light leakage lamp bead.

[0026] By adopting the technical solutions, the light-emitting properties and use time of the lamp beads on the micro-LED panel are obtained, the influence range of the light leakage is more accurately determined by considering the characteristics and use of the lamp beads, the light leakage influence range of the lamp beads is determined according to the light-emitting properties and use time, the characteristics and use of the lamp beads are considered, and the position of the light leakage is more accurately determined. The abnormal brightness distribution area is adjusted based on the light leakage influence range, the target brightness analysis area is determined, the area that needs to be analyzed is more accurately determined, and the light leakage lamp bead is more effectively determined.

[0027] Optionally, the method further comprises:

[0028] Based on the relative position of the acquisition device and each lamp bead on the micro-LED panel, coordinate data corresponding to each lamp bead is determined.

[0029] According to the abnormal brightness distribution area, the coordinate data corresponding to the abnormal brightness distribution area, the light leakage influence range of the lamp bead, and the abnormal area distance threshold, it is determined whether there is a light leakage offset area.

[0030] If the light leakage offset area exists, the light leakage offset area is determined as the target brightness analysis area.

[0031] By adopting the technical solutions, the coordinate data corresponding to each lamp bead is first determined, the position of each lamp bead can be accurately determined, and the basic data for subsequent light leakage offset analysis is provided. Then, according to the abnormal brightness distribution area and the coordinate data, the light leakage influence range of the lamp bead is determined, the light leakage influence range of each lamp bead is accurately determined, and the reference for subsequent light leakage offset analysis is provided. Then, by the light leakage influence range and the abnormal area distance threshold, it is determined whether there is a light leakage offset area, multiple factors can be considered, and the light leakage offset area is more accurately determined. If the light leakage offset area exists, the light leakage offset area is determined as the target brightness analysis area, the area that needs to be analyzed is more accurately determined, and the light leakage lamp bead is more effectively determined. The omission of the light leakage problem is avoided, and the accuracy and effect of the micro-LED panel light leakage detection and repair are improved.

[0032] In a second aspect, the application provides a light leakage detection device for a micro-LED panel, comprising:

[0033] A target brightness image determination module is configured to receive a brightness detection image sent by an acquisition device, and perform image brightness adjustment on the brightness detection image based on the relative position of the acquisition device and each lamp bead on the micro-LED panel, to determine a target brightness image.

[0034] A target brightness grayscale image determination module is configured to perform grayscale processing on the target brightness image to determine a target brightness grayscale image corresponding to the target brightness image.

[0035] The brightness distribution region division module is used to analyze the target brightness grayscale image, determine the brightness distribution information, and divide the target brightness grayscale image into several brightness distribution regions according to the brightness distribution information.

[0036] An abnormal brightness distribution area determination module is used to determine the abnormal average brightness of each brightness distribution area based on the brightness distribution information and the plurality of brightness distribution areas, so as to determine the abnormal brightness distribution area based on the abnormal average brightness and a preset brightness threshold, wherein the regional average brightness of the abnormal brightness distribution area is the abnormal average brightness.

[0037] Optionally, the image brightness adjustment includes pixel compensation; the target brightness image determination module is specifically used for:

[0038] Based on the relative position of the acquisition device and each LED bead on the micro LED panel, the light propagation path corresponding to each LED bead is determined;

[0039] Obtain the light intensity loss corresponding to the light propagation path;

[0040] Based on the light intensity loss, pixel compensation is performed on the brightness detection image to determine the target brightness image.

[0041] Optionally, the abnormal brightness distribution area determination module is specifically used for:

[0042] For each brightness distribution area, determine whether the brightness of the brightness distribution area is abnormal based on the average brightness of the corresponding area and the preset brightness threshold.

[0043] If the brightness of the brightness distribution area is abnormal, then the brightness distribution area is analyzed to determine several sub-brightness distribution information;

[0044] Analyze the several sub-brightness distribution information to determine the abnormal characteristics of the abnormal brightness, including local brightness anomalies and continuous brightness anomalies;

[0045] If the abnormality of the abnormal brightness is a local brightness abnormality, then the brightness distribution area is determined to be an abnormal brightness distribution area.

[0046] Optionally, the light leakage detection device for the micro LED panel further includes a target brightness analysis area determination module, used for:

[0047] Obtain the light emission properties and usage time of the LED beads on the micro LED panel;

[0048] The range of light leakage influence of the LED bead is determined based on the light emission properties and the usage time.

[0049] Based on the light leakage influence range, the abnormal brightness distribution area is adjusted to determine a target brightness analysis area, the target brightness analysis area is analyzed to determine a light leakage lamp bead.

[0050] Optionally, the light leakage detection device of the micro-LED panel further comprises a light leakage offset area determination module, configured to:

[0051] Based on the relative position of the acquisition device and each lamp bead on the micro-LED panel, coordinate data corresponding to each lamp bead is determined.

[0052] Based on the plurality of abnormal brightness distribution areas, the plurality of coordinate data corresponding to the plurality of abnormal brightness distribution areas, the light leakage influence range of the lamp bead, and the abnormal area distance threshold, it is determined whether there is a light leakage offset area.

[0053] If the light leakage offset area exists, the light leakage offset area is determined as the target brightness analysis area.

[0054] In a third aspect, the present application provides an electronic device, comprising a memory and a processor, wherein the memory stores a computer program capable of being loaded and executed by the processor to execute the method of the first aspect.

[0055] In a fourth aspect, the present application provides a computer readable storage medium, which stores a computer program capable of being loaded and executed by a processor to execute the method of the first aspect. BRIEF DESCRIPTION OF DRAWINGS

[0056] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiment or prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0057] Figure 1 An application scenario schematic diagram is provided for an embodiment of the present application.

[0058] Figure 2 A flowchart of a light leakage detection method of a micro-LED panel is provided for an embodiment of the present application.

[0059] Figure 3 A structure schematic diagram of a micro-LED panel is provided for an embodiment of the present application.

[0060] Figure 4 A structure schematic diagram of a light leakage detection device of a micro-LED panel is provided for an embodiment of the present application.

[0061] Figure 5A structural schematic diagram of an electronic device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0062] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0063] In addition, the term “and / or” in the present document is only used to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character “ / ” in the present document generally represents an “or” relationship between the associated objects unless otherwise specified.

[0064] The embodiments of the present application will be described in further detail below with reference to the drawings of the specification.

[0065] After the micro-LED panel is installed into the micro-LED backlight liquid crystal display, the micro-LED backlight liquid crystal display can be used by the user. Since the micro-LED panel is arranged inside the LED backlight liquid crystal display, when some light beads of the micro-LED panel leak light, it can not be possible to produce a large area of display on the micro-LED backlight liquid crystal display, and it is difficult to detect the small light leakage condition by detecting the screen of the micro-LED backlight liquid crystal display. When the screen of the micro-LED backlight liquid crystal display appears a large area of over-brightness, over-darkness, and uneven brightness, which has affected the normal use of the user, at this time, it will seriously affect the user's use experience, and therefore, it is very important to accurately detect the small light leakage of the micro-LED panel before the screen of the micro-LED backlight liquid crystal display directly shows that the micro-LED panel has a light leakage condition, so as to provide instant feedback.

[0066] Based on this, the application provides a light leakage detection method and device for a micro-LED panel, electronic equipment and a medium. The brightness detection image sent by the collection device can be received first, and then the image brightness of the brightness detection image is adjusted based on the relative position of the collection device and each lamp bead on the micro-LED panel to determine a target brightness image. The target brightness image is subjected to grayscale processing to determine a target brightness grayscale image corresponding to the target brightness image. Then, the target brightness grayscale image is analyzed to determine brightness distribution information, and the target brightness grayscale image is divided into several brightness distribution regions according to the brightness distribution information. According to the brightness distribution information, the several brightness distribution regions and a preset brightness threshold, the area average brightness of each brightness distribution region is determined to determine an abnormal brightness distribution region, and the area average brightness of the abnormal brightness distribution region is an abnormal average brightness.

[0067] Figure 1 An application scenario is provided for the application. One side of the micro-LED panel can be provided with several small LED lamp beads, which can be called the front side, and the other side can be provided with a collection device and a light leakage analysis chip, which can be called the back side. In the application scenario, Figure 1 the light leakage detection method for the micro-LED panel can be built on the light leakage analysis chip, and the shooting range of the collection device can include the entire micro-LED panel. The light leakage analysis chip can receive the brightness detection image sent by the collection device, and then process and analyze the brightness detection image to determine whether the micro-LED panel has light leakage.

[0068] The specific implementation can refer to the following embodiments.

[0069] Figure 2 A flowchart of a light leakage detection method for a micro-LED panel is provided for an embodiment of the application. The method of the embodiment can be applied to the light leakage analysis chip in the above scenario. As shown in Figure 2 the method includes:

[0070] S201, receiving a brightness detection image sent by a collection device, and adjusting the image brightness of the brightness detection image based on the relative position of the collection device and each lamp bead on the micro-LED panel to determine a target brightness image.

[0071] The structure of the micro-LED panel can refer to Figure 3The structure diagram of the micro-LED panel is shown. A plurality of micro LED lamp beads can be closely arranged on the front surface of the PCB, and then a transparent bottom plate is arranged on the back surface. The collecting device is arranged on the transparent bottom plate. The surface of the collecting device connected with the PCB can be provided with a protective cover to reduce the influence of the plurality of micro LED lamp beads on the collecting device during work. The collecting device can be arranged at the center of the micro-LED panel. Based on the position of the collecting device, each lamp bead can correspond to a position coordinate in the same coordinate system, and the relative position of the collecting device and the lamp bead can be determined.

[0072] It should be noted that the micro LED lamp bead and the lamp bead in the present application refer to the same.

[0073] The collecting device can be a micro image collecting device and a micro temperature collecting device, or a micro image collecting device with temperature collecting function. The collecting device can shoot the light emitting image of a plurality of lamp beads on the entire micro-LED panel, and can also collect the temperature distribution image. The image collected by the collecting device about the light emitting condition of the lamp bead can be used as a brightness detection image. The collecting device can shoot the micro-LED panel according to the preset shooting frequency when the micro-LED panel emits light. The shooting frequency can be set according to the historical use data of the user using the display corresponding to the micro-LED panel.

[0074] The light leakage analysis chip can be connected with the manufacturer's light leakage detection general server. The light leakage detection general server can pre-establish an image correction model to be trained. The brightness detection image of the historical micro-LED panel, the relative position of the collecting device and each lamp bead, and the picture brightness adjustment mode of the lamp bead on the corresponding micro-LED panel are extracted from the data generated by the historical light leakage detection of various micro-LED panels to construct a training set. The brightness detection image of the historical micro-LED panel in the training and the relative position of the collecting device and each lamp bead are combined to form a training sample, which is input into the image correction model to be trained to obtain an output result, i.e. the picture brightness adjustment mode of the lamp bead on the micro-LED panel. According to the picture brightness adjustment mode of the lamp bead on the micro-LED panel obtained by training and the actual picture brightness adjustment mode of the lamp bead on the corresponding micro-LED panel in the training set, the loss function is calculated, and the model parameters of the image correction model to be trained are adjusted by using the gradient descent method to reduce the loss function, until the loss function is no longer reduced, and the training is stopped, and the image correction model is obtained.

[0075] Specifically, the collection device can capture the micro-LED panel, generate a brightness detection image, and send the brightness detection image to the light leakage analysis chip. The light leakage analysis chip can correspondingly receive the brightness detection image, and then input the brightness detection image and the relative position of the collection device and each lamp bead on the micro-LED panel into an image correction model to output a picture brightness adjustment mode of each lamp bead on the micro-LED panel. Based on this, the corresponding adjustment is performed to obtain a target brightness image.

[0076] S202, performing gray processing on the target brightness image to determine a target brightness gray image corresponding to the target brightness image.

[0077] The target brightness gray image is an image obtained by performing gray processing on the target brightness image. When calculating the gray value, the values of the red, green, and blue channels of a pixel are usually limited to the range of 0 to 255 to ensure that the calculation result is between 0 and 255. Each pixel in a gray image is a single-channel pixel and has only one gray value, so it can be used to represent a black-and-white image or an image processing task that only requires brightness information. The gray value represents the brightness information of the pixel. When the brightness is high, the gray value is large, and the color on the image is relatively white; when the brightness is low, the gray value is high, and the color on the image is relatively black.

[0078] Specifically, the target brightness image can be processed by using the formula: gray value = 0.2989 * red channel value + 0.5870 * green channel value + 0.1140 * blue channel value. For each pixel in the target brightness image, multiply the values of the red, green, and blue channels by the corresponding weights and add them to obtain the final gray value. Based on this, the target brightness image can be converted into a target brightness gray image.

[0079] S203, analyzing the target brightness gray image to determine brightness distribution information, and dividing the target brightness gray image into a plurality of brightness distribution regions according to the brightness distribution information.

[0080] The brightness distribution information can include distribution information of the brightness values, coordinate information of the lamp beads corresponding to the brightness values, and the like. The gray values in the brightness distribution region are relatively close, and a gray threshold can be set in advance. If the difference between the gray values of adjacent pixels is less than or equal to the gray threshold, they can be considered close. Adjacent pixels with close gray values can be divided into the same region, which can be used as a brightness distribution region.

[0081] Specifically, the target brightness distribution image can be analyzed to determine a plurality of pixels corresponding to each lamp bead and further determine the corresponding brightness distribution information such as the brightness values. Then, based on the brightness distribution information, adjacent pixels with close gray values are divided into the same region, and finally a plurality of brightness distribution regions are obtained.

[0082] S204, determine an abnormal average brightness of each brightness distribution region according to the brightness distribution information and the plurality of brightness distribution regions, to determine an abnormal brightness distribution region based on the abnormal average brightness and a preset brightness threshold.

[0083] The brightness distribution information can include the gray scale information of each brightness distribution region, which specifically can include the gray scale values of a plurality of pixels corresponding to each lamp bead and the brightness values corresponding to the gray scale values. The region average brightness can be the average brightness value of the corresponding brightness distribution region, and the region average brightness of the abnormal brightness distribution region is the abnormal average brightness. The preset brightness threshold can be used to determine whether the brightness distribution region is an abnormal brightness distribution region. When the region average brightness of a certain abnormal brightness distribution region is greater than or equal to the preset brightness threshold, it can be determined that the brightness distribution region is an abnormal brightness distribution region. The existence of the abnormal brightness distribution region can represent the existence of the light leakage on the micro-LED panel.

[0084] Specifically, the brightness distribution information of each brightness distribution region can be found in the brightness distribution information, and a plurality of corresponding brightness values can be extracted therefrom. The plurality of brightness values are averaged to obtain the region average brightness of each brightness distribution region. The region average brightness and the preset brightness threshold can be compared to determine the abnormal average brightness, and the abnormal brightness distribution region is determined accordingly.

[0085] The present embodiment may, due to the distance between the collection device and the different lamp beads, cause a certain brightness loss, and thus the brightness corresponding to the brightness detection image can not be accurate. The relative positions of the collection device and each lamp bead on the micro-LED panel can be used to adjust the brightness of the brightness detection image, and restore the real light-emitting condition. The color image is converted into a gray scale image through gray scale processing of the adjusted target brightness image, so as to further process and analyze the brightness distribution information of the target, and then divide the target brightness gray scale image into regions, and analyze each brightness distribution region in detail to obtain the abnormal average brightness, so as to determine the existence of light leakage on the micro-LED panel, and improve the detection accuracy of the micro-LED panel in a small range.

[0086] In some embodiments, the image brightness adjustment includes pixel compensation; the relative positions can be used to determine the light propagation path of the lamp bead, and then determine the corresponding light intensity loss, and based on this, the pixel compensation is performed on the brightness detection image to determine the target brightness image. Specifically, based on the relative positions of the collection device and each lamp bead on the micro-LED panel, the light propagation path corresponding to each lamp bead is determined; the light intensity loss corresponding to the light propagation path is obtained; and the pixel compensation is performed on the brightness detection image according to the light intensity loss to determine the target brightness image.

[0087] Since the PCB of the micro-LED panel not only has lamp beads and the like installed thereon, but also has pins of some chips installed thereon, the light emission of the lamp beads is not only affected by the distance, but also affected by the loss caused by the shielding of the pins and the like. The correspondence between the light propagation path of the lamp beads at different positions on different micro-LED panels to the collection device, the different optical fiber propagation paths and the light intensity loss can be pre-set, and the correspondence can be determined according to historical light propagation data.

[0088] Specifically, the light propagation path corresponding to each lamp bead can be determined according to the relative position of the collection device and each lamp bead on the micro-LED panel, and the corresponding light intensity loss is matched and obtained. The pixel compensation is performed on the pixels of the corresponding lamp bead on the brightness detection image based on the lost light intensity, and a target brightness image is obtained.

[0089] In this embodiment, the light propagation path corresponding to each lamp bead is determined by considering the relative position of the collection device and each lamp bead on the micro-LED panel, the position and distance of each lamp bead to the collection device are considered, and the brightness of the image is adjusted more accurately. Then the light intensity loss corresponding to the light propagation path is obtained, which can consider the loss that may occur during the propagation of light, so as to more accurately adjust the brightness of the image. The pixel compensation is performed on the brightness detection image according to the light intensity loss, which can adjust the pixels of the image according to the light intensity loss, so as to more accurately determine the target brightness image. The real light emission can be restored more accurately, the brightness distribution can be determined more carefully, and the abnormal brightness distribution area can be more accurately identified, so as to more effectively improve the accuracy and detection effect of the micro-LED panel light leakage detection.

[0090] In some embodiments, the average brightness area and the preset brightness threshold can be used to determine whether the brightness of the brightness distribution area is abnormal brightness. If it is abnormal brightness, further analysis is performed to determine the abnormal characteristics of the abnormal brightness, and when the abnormal characteristics are local brightness abnormality, the brightness distribution area is determined as an abnormal brightness distribution area. Specifically, for each brightness distribution area, whether the brightness of the brightness distribution area is abnormal brightness is determined according to the area average brightness corresponding to the brightness distribution area and the preset brightness threshold; if the brightness of the brightness distribution area is abnormal brightness, the brightness distribution area is analyzed to determine a plurality of sub-brightness distribution information; the plurality of sub-brightness distribution information is analyzed to determine the abnormal characteristics of the abnormal brightness, and the abnormal characteristics include local brightness abnormality and continuous brightness abnormality; and if the abnormal characteristics of the abnormal brightness are local brightness abnormality, the brightness distribution area is determined as an abnormal brightness distribution area.

[0091] The preset luminance threshold can include the light leakage threshold involved in the above embodiments, and can also include the dim light bead value. The area average luminance can be the average value of the gray values of the pixels corresponding to the light beads in the luminance distribution area involved in the above embodiments. When the area average luminance is greater than or equal to the light leakage threshold / area average luminance is less than or equal to the dim light bead value, the luminance of the corresponding luminance distribution area can be determined as abnormal luminance, at this time, light leakage of the light bead can occur, or dim light bead, large area high light bead can occur. When it is abnormal luminance, the luminance distribution area can be further divided more carefully to obtain a plurality of sub-luminance areas, and the gray values in the area are more similar. The relationship between the sub-luminance distribution information and the sub-luminance area can be equivalent to the relationship between the luminance distribution information and the luminance distribution area in the above embodiments, and the sub-luminance distribution information can also include the pixel value corresponding to the light bead in the corresponding sub-luminance area, and the corresponding gray value, etc.

[0092] When light leakage occurs, in most cases, a single light bead is abnormal, so the light leakage on the micro-LED panel is local, corresponding to local luminance abnormality. When the light bead is used for a long time, the circuit problem causes the current to be too large, etc., usually a part of the connected light beads are abnormal, which can be in a large area and coherent dim or high light on the micro-LED panel.

[0093] Specifically, for each luminance distribution area, the area average luminance can be compared with the preset luminance threshold to determine whether the luminance of the luminance distribution area is abnormal luminance. If it is abnormal luminance, the luminance distribution area is analyzed to determine a plurality of sub-luminance distribution information. Analyzing a plurality of self-luminance distribution information can determine the concentration of abnormal luminance, and then obtain the abnormal characteristics. When the abnormal characteristics are local luminance abnormality, the luminance distribution area is determined as an abnormal luminance distribution area.

[0094] In some implementations, when the abnormal characteristics are coherent luminance abnormality, the light bead can be further analyzed to be high or dim, and corresponding feedback can be performed.

[0095] The embodiment can quickly and effectively detect the luminance abnormality distribution area and improve the accuracy of light leakage detection by determining whether the luminance of each luminance distribution area is abnormal luminance according to the corresponding area average luminance and the preset luminance threshold. If the luminance of a certain luminance distribution area is determined to be abnormal luminance, the area is analyzed to determine several sub-luminance distribution information, and the cause of the abnormal luminance is further analyzed to provide a reference for subsequent repair and improvement. According to the several sub-luminance distribution information, the abnormal characteristics of the abnormal luminance, including local luminance abnormality and continuous luminance abnormality, can be analyzed, and the manifestation form of the luminance abnormality can be carefully studied to provide accurate guidance for repair and improvement. If the abnormal characteristics of the abnormal luminance are local luminance abnormality, the luminance distribution area can be determined as an abnormal luminance distribution area, and the area of the local luminance abnormality can be accurately identified, thereby effectively improving the accuracy and detection effect of light leakage detection.

[0096] In some embodiments, the light leakage influence range of the lamp beads can be determined according to the light emission properties and use time of the lamp beads, and then the abnormal luminance distribution area is adjusted to determine the light leakage lamp beads. Specifically, the light emission properties and use time of the lamp beads on the micro-LED panel are obtained; the light leakage influence range of the lamp beads is determined according to the light emission properties and use time; the abnormal luminance distribution area is adjusted based on the light leakage influence range to determine a target luminance analysis area, and the target luminance analysis area is analyzed to determine the light leakage lamp beads.

[0097] The light emission properties can be used to represent the corresponding light emission luminance, light emission range, light leakage influence range, etc. of the lamp beads under different use time. The light leakage influence range can be used to represent the range of lamp beads contained in the area that can be affected between the maximum light leakage and the minimum light leakage that can occur to the lamp beads, i.e. the range of lamp beads contained in the area that causes luminance abnormality due to the leaked light. The time when the micro-LED panel is installed into the display and starts to be used can be recorded by the leakage analysis chip, and the period between the current time and the recorded time can be used as the use time. The light emission properties of the lamp beads can be determined by testing when the micro-LED panel is produced. The target luminance analysis area can be used to represent the area where the light leakage lamp beads exist.

[0098] Specifically, the light emission properties and use time of the lamp beads on the micro-LED panel can be obtained. Then, the corresponding light leakage influence range is determined in the light emission properties based on the use time. Since the abnormal luminance distribution area only represents the luminance abnormality of the area, it does not necessarily mean that the light leakage lamp beads are in the area, and the abnormal luminance distribution area can be adjusted in combination with the light leakage influence range to determine the target luminance analysis area, so as to further analyze the target luminance analysis area and determine the light leakage lamp beads.

[0099] The embodiment obtains the light-emitting properties and use time of the lamp beads on the micro-LED panel, considers the characteristics and use of the lamp beads, and thus more accurately determines the influence range of the light leakage. Then, the influence range of the light leakage of the lamp beads is determined according to the light-emitting properties and use time, the characteristics and use of the lamp beads can be considered, and thus the position of the light leakage is more accurately determined. The abnormal brightness distribution area is adjusted based on the influence range of the light leakage, the target brightness analysis area is determined, the area that needs to be analyzed is more accurately determined, and thus the light leakage lamp bead is more effectively determined.

[0100] In some embodiments, the coordinate data of the lamp beads can be combined to determine whether there is a light leakage offset area, and if there is, the light leakage offset area is determined as the target brightness analysis area. Specifically, based on the relative position of the collection device and each lamp bead on the micro-LED panel, the coordinate data corresponding to each lamp bead is determined; whether there is a light leakage offset area is determined according to the plurality of abnormal brightness distribution areas, the plurality of coordinate data corresponding to the plurality of abnormal brightness distribution areas, the light leakage influence range of the lamp beads, and the abnormal area distance threshold; if there is a light leakage offset area, the light leakage offset area is determined as the target brightness analysis area.

[0101] The collection device can be arranged at the center of the micro-LED panel, and each lamp bead can correspond to a position coordinate in the same coordinate system based on the position of the collection device. The non-abnormal brightness distribution area on the micro-LED panel can also have certain problems, if the lamp beads in a certain brightness distribution area are dim, and the adjacent area of the brightness distribution area has light leakage, the dim light can be supplemented, resulting in that the brightness distribution area is detected as a non-abnormal brightness distribution area. The abnormal brightness distribution area can be pre-set according to the specific arrangement of the lamp beads on the micro-LED panel and the light leakage influence range of the lamp beads, when the distance between the nearest two abnormal brightness distribution areas is less than or equal to the abnormal area distance threshold, it can be indicated that the two abnormal brightness distribution areas can also be affected by other target brightness analysis areas, at this time, the coordinate data of the lamp beads and the light leakage influence range of the lamp beads are combined to determine which area can also produce light leakage but has not been found, and the area is determined as the light leakage offset area. The target brightness analysis area obtained in the above embodiment is not unique, and the light leakage offset area can be used as a new target brightness analysis area for subsequent analysis.

[0102] Specifically, the coordinate data corresponding to each lamp bead can be determined according to the relative position of the collection device and each lamp bead on the micro-LED panel. Then, the light leakage offset area can be obtained by inputting a plurality of abnormal brightness distribution areas, a plurality of coordinate data corresponding to the plurality of abnormal brightness distribution areas, a light leakage influence range of the lamp bead, and an abnormal area distance threshold to a light leakage offset area determination model pre-established by the light leakage offset area determination model. Then, the light leakage offset area can be determined as the target brightness analysis area, so as to supplement the analysis of the light leakage lamp bead.

[0103] The embodiment first determines the coordinate data corresponding to each lamp bead, which can accurately determine the position of each lamp bead and provide basic data for subsequent light leakage offset analysis. Then, the light leakage influence range of the lamp bead is determined according to the plurality of abnormal brightness distribution areas and the plurality of coordinate data, which accurately determines the light leakage influence range of each lamp bead and provides a reference for subsequent light leakage offset analysis. Then, whether there is a light leakage offset area is determined through the light leakage influence range and the abnormal area distance threshold, which can consider multiple factors to more accurately determine the light leakage offset area. If there is a light leakage offset area, the light leakage offset area is determined as the target brightness analysis area, which more accurately determines the area to be analyzed, thereby more effectively determining the light leakage lamp bead. The omission of the light leakage problem is avoided, and the accuracy and effect of the micro-LED panel light leakage detection and repair are improved.

[0104] Figure 4 A structural schematic diagram of a light leakage detection device of a micro-LED panel provided by an embodiment of the present application is shown in FIG. 4. Figure 4 As shown in FIG. 4, the light leakage detection device 400 of the micro-LED panel of the embodiment includes a target brightness image determination module 401, a target brightness grayscale image determination module 402, a brightness distribution area division module 403, and an abnormal brightness distribution area determination module 404.

[0105] The target brightness image determination module 401 is configured to receive the brightness detection image sent by the collection device, and perform image brightness adjustment on the brightness detection image based on the relative position of the collection device and each lamp bead on the micro-LED panel to determine a target brightness image.

[0106] The target brightness grayscale image determination module 402 is configured to perform grayscale processing on the target brightness image to determine a target brightness grayscale image corresponding to the target brightness image.

[0107] The brightness distribution area division module 403 is configured to analyze the target brightness grayscale image to determine brightness distribution information, and divide the target brightness grayscale image into a plurality of brightness distribution areas according to the brightness distribution information.

[0108] The abnormal brightness distribution area determination module 404 is configured to determine an abnormal average brightness of each brightness distribution area according to the brightness distribution information and the plurality of brightness distribution areas, and determine an abnormal brightness distribution area based on the abnormal average brightness and a preset brightness threshold, wherein the area average brightness of the abnormal brightness distribution area is the abnormal average brightness.

[0109] Optionally, the image brightness adjustment comprises pixel compensation, and the target brightness image determination module 401 is specifically configured to:

[0110] Based on the relative position of the acquisition device and each lamp bead on the micro-LED panel, the light propagation path corresponding to each lamp bead is determined.

[0111] The light intensity loss corresponding to the light propagation path is obtained.

[0112] According to the light intensity loss, the pixel compensation is performed on the brightness detection image to determine the target brightness image.

[0113] Optionally, the abnormal brightness distribution area determination module 404 is specifically configured to:

[0114] For each brightness distribution area, the brightness of the brightness distribution area is determined to be abnormal brightness according to the area average brightness corresponding to the brightness distribution area and the preset brightness threshold.

[0115] If the brightness of the brightness distribution area is abnormal brightness, the brightness distribution area is analyzed to determine a plurality of sub-brightness distribution information.

[0116] The plurality of sub-brightness distribution information is analyzed to determine the abnormal characteristics of the abnormal brightness, and the abnormal characteristics include local brightness abnormality and continuous brightness abnormality.

[0117] If the abnormal characteristics of the abnormal brightness are local brightness abnormality, the brightness distribution area is determined to be an abnormal brightness distribution area.

[0118] Optionally, the light leakage detection device 400 of the micro-LED panel further comprises a target brightness analysis area determination module 405, which is configured to:

[0119] The light-emitting properties and use time of the lamp beads on the micro-LED panel are obtained.

[0120] The light leakage influence range of the lamp beads is determined according to the light-emitting properties and the use time.

[0121] Based on the light leakage influence range, the abnormal brightness distribution area is adjusted to determine a target brightness analysis area, so as to analyze the target brightness analysis area to determine the light leakage lamp bead.

[0122] Optionally, the light leakage detection device 400 of the micro-LED panel further comprises a light leakage offset area determination module 406, which is configured to:

[0123] Based on the relative position of the collection device and each lamp bead on the micro-LED panel, coordinate data corresponding to each lamp bead is determined.

[0124] Based on the several abnormal brightness distribution regions, the several coordinate data corresponding to the several abnormal brightness distribution regions, the light leakage influence range of the lamp bead, and the abnormal region distance threshold, it is determined whether there is a light leakage offset region.

[0125] If there is a light leakage offset region, the light leakage offset region is determined as the target brightness analysis region.

[0126] The device of the embodiment can be used to execute the method of any of the above embodiments, and has similar implementation principles and technical effects, which will not be described here.

[0127] Figure 5 A structural schematic diagram of an electronic device provided by an embodiment of the present application is shown in FIG. 5. The electronic device 500 of the embodiment can include a memory 501 and a processor 502. Figure 5

[0128] The memory 501 stores a computer program capable of being loaded and executed by the processor 502 to perform the method in the above embodiments.

[0129] The processor 502 and the memory 501 are connected, for example, through a bus.

[0130] Optionally, the electronic device 500 can further include a transceiver. It should be noted that the transceiver in actual application is not limited to one, and the structure of the electronic device 500 does not constitute a limitation on the embodiments of the present application.

[0131] The processor 502 can be a CPU (Central Processing Unit, central processor), a general-purpose processor, a DSP (Digital Signal Processor, data signal processor), an ASIC (Application Specific Integrated Circuit, application specific integrated circuit), an FPGA (Field Programmable Gate Array, field programmable gate array), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logical blocks, modules and circuits described in combination with the disclosure of the present application. The processor 502 can also be a combination of computing functions, such as one or more microprocessor combinations, combinations of DSP and microprocessor, etc.

[0132] ​The bus can include a path over which the above-described components transmit information. The bus can be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For convenience of representation, only one thick line is shown in the drawing, but this does not mean that there is only one bus or only one type of bus.

[0133] The memory 501 can be a ROM (Read Only Memory) or other type of static storage device that can store static information and instructions, a RAM (Random Access Memory) or other type of dynamic storage device that can store information and instructions, an EEPROM (Electrically Erasable Programmable Read Only Memory), a CD-ROM (Compact Disc Read Only Memory) or other optical disk storage, a magnetic disk storage medium or other magnetic storage device, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto.

[0134] The memory 501 is used to store application program codes for implementing the scheme of the present application, and is controlled by the processor 502 to execute. The processor 502 is used to execute the application program codes stored in the memory 501 to realize the content shown in the foregoing method embodiments.

[0135] The electronic device includes, but is not limited to, a mobile terminal such as a mobile phone, a notebook computer, a digital broadcast receiver, a PDA (Personal Digital Assistant), a PAD (Tablet Personal Computer), a PMP (Portable Multimedia Player), a car terminal (for example, a car navigation terminal), and the like, and a fixed terminal such as a digital TV, a desktop computer, and the like. It can also be a server, etc. Figure 5 The electronic device shown is only an example, and should not bring any limitation to the function and use range of the embodiments of the present application.

[0136] The electronic device of the present embodiment can be used to execute the method of any one of the foregoing embodiments, and has similar implementation principles and technical effects, which will not be described here again.

[0137] The application further provides a computer readable storage medium, which stores a computer program capable of being loaded and executed by a processor to perform the method in the above embodiment.

[0138] Those skilled in the art can understand that all or part of the steps of the above-mentioned method embodiments can be completed by program instruction related hardware. The foregoing program can be stored in a computer readable storage medium. When the program is executed, the steps of the above-mentioned method embodiments are executed; and the foregoing storage medium includes various media capable of storing program codes, such as ROM, RAM, magnetic disk or optical disk.

Claims

1. A light leakage detection method of a micro LED panel, characterized in that, The method comprises the following steps: Receiving a brightness detection image sent by a collection device, and performing image brightness adjustment on the brightness detection image based on the relative position of the collection device and each lamp bead on the micro-LED panel to determine a target brightness image; Performing grayscale processing on the target brightness image to determine a target brightness grayscale image corresponding to the target brightness image; Analyzing the target brightness grayscale image to determine brightness distribution information, and dividing the target brightness grayscale image into a plurality of brightness distribution regions according to the brightness distribution information; According to the brightness distribution information and the plurality of brightness distribution regions, determining the average abnormal brightness of each brightness distribution region, and determining the abnormal brightness distribution region based on the average abnormal brightness and a preset brightness threshold; The step of determining the abnormal brightness distribution region based on the average abnormal brightness and the preset brightness threshold comprises: for each brightness distribution region, determining whether the brightness of the brightness distribution region is abnormal brightness according to the regional average brightness corresponding to the brightness distribution region and the preset brightness threshold; If the brightness of the brightness distribution region is abnormal brightness, analyzing the brightness distribution region to determine a plurality of sub-brightness distribution information; Analyzing the plurality of sub-brightness distribution information to determine the abnormal characteristics of the abnormal brightness, wherein the abnormal characteristics include local brightness abnormality and continuous brightness abnormality; If the abnormal characteristics of the abnormal brightness are local brightness abnormality, the brightness distribution region is determined as an abnormal brightness distribution region; The image brightness adjustment comprises pixel compensation; The step of determining the target brightness image based on the relative position of the collection device and each lamp bead on the micro-LED panel to determine the target brightness image comprises: determining the light propagation path corresponding to each lamp bead based on the relative position of the collection device and each lamp bead on the micro-LED panel; Obtaining the light intensity loss corresponding to the light propagation path; According to the light intensity loss, performing pixel compensation on the brightness detection image to determine the target brightness image.

2. The light leakage detection method of the micro-LED panel according to claim 1, wherein Further comprising: Obtaining the light-emitting properties and use time of the lamp beads on the micro-LED panel; According to the light-emitting properties and the use time, determining the light leakage influence range of the lamp beads; Based on the light leakage influence range, adjusting the abnormal brightness distribution region to determine a target brightness analysis region, and analyzing the target brightness analysis region to determine a light leakage lamp bead.

3. The light leakage detection method of the micro-LED panel according to claim 2, wherein Further comprising: Based on the relative position of the collection device and each lamp bead on the micro-LED panel, determining the coordinate data corresponding to each lamp bead; According to a plurality of abnormal brightness distribution regions, a plurality of coordinate data corresponding to the plurality of abnormal brightness distribution regions, a light leakage influence range of the lamp beads, and an abnormal region distance threshold, determining whether there is a light leakage offset region; If there is the light leakage offset region, the light leakage offset region is determined as the target brightness analysis region.

4. A light leakage detection device of a micro LED panel, characterized in that, The light leakage detection method applied to the micro-LED panel of any one of claims 1-3 comprises: a target brightness image determination module configured to receive a brightness detection image sent by a collection device, and perform image brightness adjustment on the brightness detection image based on a relative position of the collection device and each lamp bead on the micro-LED panel to determine a target brightness image; a target brightness grayscale image determination module configured to perform grayscale processing on the target brightness image to determine a target brightness grayscale image corresponding to the target brightness image; a brightness distribution region division module configured to analyze the target brightness grayscale image to determine brightness distribution information, and divide the target brightness grayscale image into a plurality of brightness distribution regions according to the brightness distribution information; an abnormal brightness distribution region determination module configured to determine an abnormal average brightness of each brightness distribution region according to the brightness distribution information and the plurality of brightness distribution regions, and determine an abnormal brightness distribution region based on the abnormal average brightness and a preset brightness threshold, wherein a region average brightness of the abnormal brightness distribution region is the abnormal average brightness.

5. The light leakage detection device of the micro-LED panel according to claim 4, wherein, The image brightness adjustment comprises pixel compensation. The target brightness image determination module is specifically configured to determine a light propagation path corresponding to each lamp bead based on the relative position of the collection device and each lamp bead on the micro-LED panel. Obtain a light intensity loss corresponding to the light propagation path. According to the light intensity loss, perform pixel compensation on the brightness detection image to determine a target brightness image.

6. The light leakage detection device of the micro-LED panel according to claim 4, wherein, The abnormal brightness distribution region determination module is specifically configured to, for each brightness distribution region, determine whether the brightness of the brightness distribution region is abnormal brightness according to a region average brightness corresponding to the brightness distribution region and a preset brightness threshold. If the brightness of the brightness distribution region is abnormal brightness, analyze the brightness distribution region to determine a plurality of sub-brightness distribution information. Analyze the plurality of sub-brightness distribution information to determine an abnormal characteristic of the abnormal brightness, wherein the abnormal characteristic comprises local brightness abnormality and continuous brightness abnormality. If the abnormal characteristic of the abnormal brightness is local brightness abnormality, determine that the brightness distribution region is an abnormal brightness distribution region.

7. An electronic device, comprising: Comprise: a memory and a processor; the memory is configured to store program instructions; the processor is configured to call and execute the program instructions in the memory to execute the light leakage detection method of the micro-LED panel according to any one of claims 1-3.

8. A computer-readable storage medium, characterized in that, The computer program is stored in the computer readable storage medium. When the computer program is executed by the processor, the light leakage detection method of the micro-LED panel according to any one of claims 1-3 is realized.

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