Quality detection system and method for lamp beads and television backboard

Abstract

The invention provides a lamp bead quality detection system and method and a television backboard, and relates to the technical field of quality detection, and the system comprises a driving module which is connected with a driving board and an image collection device, and is used for controlling the on-off mode of each lamp bead on the driving board to carry out image switching, so as to form a plurality of detection images, meanwhile, controlling the image acquisition equipment to acquire each detection picture to obtain a plurality of detection images; and the detection module is connected with the driving module and is used for identifying the problem lamp beads on the detection images and correspondingly generating quality detection results. The method has the beneficial effects that image acquisition is carried out on detection pictures of different on-off modes of the lamp beads, and then the lamp beads are automatically inspected through machine vision, so that the quality detection of the lamp beads is realized without manual visual inspection; and the body health of operators is guaranteed, the working intensity is reduced, and the reliability of the product quality is improved at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of quality inspection, and in particular to a quality inspection system and method for lamp beads and a television back panel. Background Art

[0002] In modern product quality inspection and production lines, especially in the LED lighting and lamp production industry, strict quality inspection of lamp beads is often involved. For example, BL inspection, which usually refers to "brightness inspection" in Chinese, is a visual inspection of LED lamp beads in lamps during the production process of LED lamps or lamp beads. It is a quality inspection method used to detect whether the lamp beads are normally lit or extinguished, in order to ensure that the brightness and light color of the light source of the lamp beads meet the specification requirements.

[0003] At present, the known BL inspection is completed by manual operation. The manual inspector wears special sunglasses to conduct the inspection. During the inspection, he needs to switch between multiple on and off modes for observation. At the same time, he uses his eyes to observe the on and off modes of the lamp beads to judge whether the quality of the lamp beads is qualified. Since the brightness of the LED lamp beads themselves is very high and they are densely arranged, the eyes of the operator need to bear great visual pressure during the inspection. Although wearing sunglasses can effectively reduce the direct damage to the eyes caused by bright light, it still cannot avoid the long-term impact of frequent on and off changes on the visual system. Staring at the constantly changing on and off lamp beads for a long time can not only easily cause visual fatigue of the inspector, but may also lead to a decrease in attention, and then cause missed inspections. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a quality detection system for lamp beads, wherein the lamp beads are multiple and distributed in an array on a driving board, and the quality detection system comprises:

[0005] A detection platform, the driving board is fixed on the detection platform, and at least one image acquisition device is installed on a side of the driving board facing the lamp beads;

[0006] A driving module, connected to the driving board and the image acquisition device, respectively, for controlling the on / off mode of each of the lamp beads on the driving board to switch the screen, so as to form a plurality of detection screens, and at the same time controlling the image acquisition device to acquire each of the detection screens to obtain a plurality of detection images;

[0007] The detection module is connected to the driving module and is used to identify the problematic lamp beads on each of the detection images and generate corresponding quality detection results.

[0008] Preferably, the detection module comprises:

[0009] A first identification unit is used to respectively identify the brightness of each of the lighted lamp beads on each of the detection images, and identify the corresponding lamp beads as problematic lamp beads when the brightness is not within a preset threshold range;

[0010] A generating unit, connected to the first identification unit, is used to generate a result schematic diagram as the quality detection result, wherein the result schematic diagram includes the position of the problematic lamp beads on each of the detection images on the driving board.

[0011] Preferably, the array distribution has the long sides of the driving board as rows and the short sides as columns, the shooting range of the image acquisition device can at least cover the short side direction, and the on / off mode controls the on / off of the lamp beads according to rows or columns; the detection module includes:

[0012] A second identification unit is used to respectively identify the real-time number of the lighted lamp beads in each column on each of the detection images;

[0013] A storage unit, used for storing the number of lamp beads that should be lit in each column under different on / off modes associated with the driver boards of different models;

[0014] The third identification unit is respectively connected to the second identification unit, the storage unit and the generation unit, and is used to identify the lamp beads that should not be lit or should not be extinguished in the corresponding column as the problem lamp beads when the real-time number is inconsistent with the number of lamp beads.

[0015] Preferably, it also includes an interactive interface connected to the detection module, and an operator selects the model of the drive board through the interactive interface, and selects the location area of ​​the drive board on the detection platform on the interactive interface;

[0016] The detection module also includes:

[0017] A denoising unit is used to obtain the pixel coordinates of the position area, and to crop each of the collected detection images based on the pixel coordinates, and to use the obtained cropped image containing only the position area as the detection image to identify the problematic lamp bead.

[0018] Preferably, the on-off mode includes lighting up alternate rows, and the corresponding detection screen includes at least a first detection screen and a second detection screen, in which only the lamp beads in odd rows are lit in the first detection screen, and in the second detection screen, only the lamp beads in even rows are lit;

[0019] and / or

[0020] The on-off mode includes lighting up alternate columns, and the corresponding detection screen also includes a third detection screen and a fourth detection screen, in which only the lamp beads in odd columns are lit in the third detection screen, and in the second detection screen, only the lamp beads in even columns are lit;

[0021] and / or

[0022] The on-off mode includes first fully on and then fully off, and the corresponding detection screen also includes a fifth detection screen and a sixth detection screen. In the fifth detection screen, all the lamp beads are lit, and in the sixth detection screen, all the lamp beads are fully off.

[0023] Preferably, the quality inspection result also includes a product quality inspection result, and the inspection module also includes a product inspection unit, which is used to output the quality inspection result that the driving board has a quality problem when the driving board cannot switch between the various inspection screens under the drive of the driving module.

[0024] Preferably, there are one or more image acquisition devices, each of which performs image acquisition synchronously, and each detection screen obtained by each acquisition covers all the lamp beads on the driving board together.

[0025] The present invention also provides a quality inspection method for lamp beads, which uses the above-mentioned quality inspection system and includes:

[0026] Step S1, the quality control system controls the on / off mode of each lamp bead on the driving board to switch the screen to form a plurality of detection screens respectively, and simultaneously controls the image acquisition device to acquire each of the detection screens to obtain a plurality of detection images;

[0027] Step S2, the quality control system identifies the brightness of each of the lamp beads on each of the detection images, and generates a quality detection result based on the brightness.

[0028] The present invention also provides a television back panel, comprising a plurality of sub-millimeter light emitting diodes, wherein the sub-millimeter light emitting diodes are used as lamp beads and the above-mentioned quality inspection system is used to perform product quality inspection.

[0029] The above technical solution has the following advantages or beneficial effects:

[0030] 1) By collecting images of the detection screens of different on-off modes of the lamp beads, and then automatically inspecting the lamp beads through machine vision, the quality inspection of the lamp beads no longer needs to be carried out manually with the naked eye, which ensures the health of the operators, reduces the intensity of work, and improves the reliability of product quality;

[0031] 2) It has a certain degree of adaptability to differences in the placement of TVs, and can inspect models of various sizes and lamp density. The above characteristics enable it to cope with actual situations in daily production. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a structural schematic diagram of a lamp bead quality detection system in a preferred embodiment of the present invention;

[0033] Figure 2 A schematic diagram of the relative positions of the driving board and the image acquisition device in a preferred embodiment of the present invention;

[0034] Figure 3 In a preferred embodiment of the present invention, the image acquisition device respectively acquires a schematic diagram of images of a portion of the driving board;

[0035] Figure 4 The figure is a flow chart of a method for detecting the quality of lamp beads in a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0036] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. The present invention is not limited to this embodiment, and other embodiments may also fall within the scope of the present invention as long as they conform to the gist of the present invention.

[0037] In a preferred embodiment of the present invention, based on the above problems existing in the prior art, a quality detection system for lamp beads is provided. Figure 1 and Figure 2 As shown, there are multiple lamp beads 100, which are distributed in an array on the driving board 200, and the quality detection system includes:

[0038] A detection platform 1, a driving board 200 is fixed on the detection platform 1, and at least one image acquisition device 2 is installed on a side of the driving board 200 facing the lamp bead 100;

[0039] The driving module 3 is connected to the driving board 1 and the image acquisition device 2 respectively, and is used to control the on and off modes of each lamp bead 100 on the driving board 200 to switch the screen, so as to form a plurality of detection screens respectively, and at the same time control the image acquisition device 2 to acquire each detection screen to obtain a plurality of detection images;

[0040] The detection module 4 is connected to the driving module 3 and is used to identify the problematic lamp beads on each detection image and generate corresponding quality detection results.

[0041] Specifically, in this embodiment, the driving module 3 and the detection module 4 are preferably mounted on a computer or mobile terminal in the form of an application. Taking the driving board 200 as a driving board on the back panel of a TV as an example, the detection platform 1 is preferably designed to accommodate the TV model with the current largest screen size, so that it can install and fix the back panels of TVs with different screen sizes, thereby realizing the quality detection of lamp beads for models of various sizes.

[0042] In actual application scenarios, the driver board 200 to be tested can be first fixed at a corresponding position on the test platform 1, and then the operator can open the corresponding application through the interactive interface 5 provided by the computer or mobile terminal, and establish a connection with the image acquisition device 2 and the driver board 200 to be tested, where the connection can be a wired connection or a wireless connection. After each image acquisition device 2 is started and the driver board 200 to be tested is powered on, it is preferred to send a corresponding startup success signal and a power-on success signal to the computer or mobile terminal, and then the application automatically runs, controls the on and off mode of each lamp bead 100 on the driver board 200 to switch the screen, so as to form a plurality of detection screens respectively, and simultaneously controls the image acquisition device 2 to collect each detection screen to obtain a plurality of detection images.

[0043] Further preferably, each image acquisition device 2 is responsible for photographing an area of ​​the test platform 1. When the size of the driving board 200 is relatively large, each image acquisition device 2 can only photograph an area of ​​the driving board 200, such as the left area, the middle area and the right area, and the shooting is synchronized with the rhythm of the screen switching. In order not to interfere with the shooting rhythm, while acquiring each detection image, it is preferred to perform multi-threaded machine vision processing on each detection image to identify the problematic lamp beads contained therein, and then generate the corresponding quality inspection results, so as to avoid the problem of single-threaded processing that only after processing one picture can the next picture be started, and the rhythm of the screen switching cannot be kept up and the instability occurs.

[0044] Among them, taking the above-mentioned driving board 200 as the driving board 200 of the back plate of the TV, and the corresponding lamp bead 100 as a sub-millimeter light-emitting diode (miniLED) as an example, considering that large-size TVs (such as 85 inches) are becoming more and more popular, it is preferred to use 3 image acquisition devices 2 for image acquisition, so as to be able to capture all the sub-millimeter light-emitting diodes (miniLED) on the back plate of the large-size TV, while ensuring that each lamp bead occupies a sufficient pixel size in the detection image. The 3 image acquisition devices 2 here are preferably 3 20 million pixel cameras, which can achieve that each sub-millimeter light-emitting diode (miniLED) occupies a size of about 10*10 pixels in the detection image.

[0045] It is understandable that the detection images taken by the three cameras will overlap with each other, but the detection images taken by each camera can be independently recognized by machine vision, and the problem of the lamp beads in the overlapping part will not affect the output of the final result.

[0046] In a preferred embodiment of the present invention, the detection module 4 includes:

[0047] The first identification unit 41 is used to identify the brightness of each lighted lamp bead 100 on each detection image, and identify the corresponding lamp bead 100 as a problematic lamp bead when the brightness is not within a preset threshold range;

[0048] The generating unit 42 is connected to the first identifying unit 41 and is used to generate a result schematic diagram as a quality detection result. The result schematic diagram includes the position of the problematic lamp beads on the driving board 1 in each detection image.

[0049] Specifically, in this embodiment, the above-mentioned preset threshold range can be set separately according to the different models of the TV back panel where the driver board 200 is located. Based on this, before starting the quality inspection, it is preferably also included that the operator selects the model of the driver board 200 to be inspected through the interactive interface 5 provided by the computer or mobile terminal, and then the system can automatically hit the corresponding preset threshold range for brightness judgment.

[0050] Among them, if the brightness of the lit lamp bead 100 is less than the lower limit of the preset threshold range, it is judged that the lamp bead 100 is too dim and is a problematic lamp bead. If the brightness of the lit lamp bead 100 is greater than the upper limit of the preset threshold range, it is judged that the lamp bead 100 is too bright and is also a problematic lamp bead. After identifying the problematic lamp bead, it also includes a corresponding result schematic diagram including the position of the problematic lamp bead on the driving board 200. Preferably, the result schematic diagram here is a pair, that is, when there are multiple image acquisition devices 2 that perform regional segmentation processing on the multiple lamp beads 100 distributed on the driving board 200, when the quality inspection results are finally displayed, the entire area on the driving board 200 is displayed to facilitate the operator to view and review.

[0051] The result diagram here can use lines to draw a rectangular frame to represent the TV, and preferably show the quality inspection result of the entire driver board 200 in its upper left corner. If all the lamp beads 100 on the driver board 200 are tested normal, OK can be displayed in the upper left corner. If any lamp bead 100 on the driver board 200 is a problem lamp bead, NG can be displayed in the upper left corner. Furthermore, a red frame can be used to circle the approximate position of the problem lamp bead on the TV so that the operator can check and verify. The above result diagram is only used as an example and does not limit the present invention.

[0052] Furthermore, the above detection method can detect whether the brightness of the lit lamp beads 100 is normal, but there may be a situation where the brightness of the lamp beads 100 is normal but should not be lit or should not be turned off in the corresponding on-off mode, such as the on-off mode is that the lamp beads 100 in odd rows are lit and the lamp beads 100 in even rows are turned off, but there are lamp beads that should not be turned off in odd rows, or lamp beads that should not be lit in even rows. Based on this, in a preferred embodiment of the present invention, the array distribution is based on the long side of the driving board 1 as the row and the short side as the column, the shooting range of the image acquisition device 2 can at least cover the short side direction, and the on-off mode is to control the on and off of the lamp beads 100 according to the row or column; the detection module 4 includes:

[0053] The second recognition unit 43 is used to respectively recognize the real-time number of the lighted lamp beads 100 in each column on each detection image;

[0054] The storage unit 44 is used to store the number of lamp beads that should be lit in each column under different on / off modes associated with the driver boards of different models;

[0055] The third identification unit 45 is respectively connected to the second identification unit 43, the storage unit 44 and the generation unit 42, and is used to identify the lamp beads 100 that should not be lit or should not be extinguished as problem lamp beads in the corresponding column when the real-time number is inconsistent with the number of lamp beads.

[0056] Specifically, in this embodiment, considering that the short side of the back panel of a large-sized TV set is usually not too wide, when installing the image acquisition device 2, as shown in FIG. Figure 2 and Figure 3 As shown, preferably, multiple image acquisition devices 2 are arranged in sequence along the long side direction of the TV back panel. In the long side direction, each image acquisition device 2 can capture a portion of the area, such as area A, area B, and area C. In each area, for example, although area A only contains part of the lamp beads in each row, it covers all the lamp beads in each column in the short side direction of the area, and so on for other areas. Based on this, by comparing the number of lamp beads that should be lit in each column under different on-off modes with the real-time number of lamp beads that are actually lit in each column, it is possible to locate whether there are lamp beads that should not be turned off or should not be lit in each column, and then further locate the specific position of the problem lamp bead in the column based on the difference in its brightness with the lamp beads in the same row or column.

[0057] In a preferred embodiment of the present invention, the on-off mode includes lighting up alternate rows, and the corresponding detection screen includes at least a first detection screen and a second detection screen, in which only the lamp beads 100 in odd rows are lit in the first detection screen, and in the second detection screen, only the lamp beads 100 in even rows are lit;

[0058] and / or

[0059] The on-off mode includes lighting up alternate columns, and the corresponding detection screen also includes a third detection screen and a fourth detection screen. In the third detection screen, only the lamp beads 100 in the odd-numbered columns are lit, and in the second detection screen, only the lamp beads 100 in the even-numbered columns are lit;

[0060] and / or

[0061] The on-off mode includes first fully on and then fully off, and the corresponding detection screen also includes a fifth detection screen and a sixth detection screen. In the fifth detection screen, all the lamp beads 100 are lit, and in the sixth detection screen, all the lamp beads 100 are off.

[0062] In a preferred embodiment of the present invention, the quality inspection result also includes a product quality inspection result, and the inspection module 4 also includes a product inspection unit 47, which is used to output a quality inspection result indicating that the driver board 200 has a quality problem when the driver board 200 cannot switch between various inspection screens under the drive of the driver module 3.

[0063] Specifically, in this embodiment, when the quality inspection of the lamp beads 100 on the driving board 200 is required, any one of the three light-off modes of lighting up in alternate rows, lighting up in alternate columns, and lighting up all the way before all the way off can be used, that is, it is sufficient to control the acquisition and identification of two groups of detection images. It is preferred to light up in alternate rows or lighting up in alternate columns, so that even if the density of lamp beads is large, they can be accurately detected. However, only one light-off mode may not be able to detect whether the driving board 200 itself has quality problems. When the quality inspection of the driving board 200 is required at the same time, it is preferred that the three light-off modes of lighting up in alternate rows, lighting up in alternate columns, and lighting up all the way before all the way off are executed in sequence, such as first switching to the second detection screen for 3 seconds after the first detection screen is maintained for 3 seconds, then switching to the third detection screen for 3 seconds, then switching to the fourth detection screen for 3 seconds, then switching to the sixth detection screen for 2 seconds, and finally switching to the fifth detection screen. Among them, when all the lamp beads 100 in the fifth detection screen are lit, the brightness of each lamp bead is 30% of the standard brightness to avoid damage to the human eye during manual review.

[0064] In a preferred embodiment of the present invention, an interactive interface 5 is further included, connected to the detection module 4, and an operator selects the type of the drive board 1 through the interactive interface 5, and selects the location area of ​​the drive board 200 on the detection platform 1 on the interactive interface 5;

[0065] The detection module 4 also includes:

[0066] The denoising unit 46 is used to obtain the pixel coordinates of the position area, and to crop each collected detection image based on the pixel coordinates, and to use the obtained cropped image containing only the position area as the detection image to identify the defective lamp beads.

[0067] Specifically, since the detection platform 1 is usually designed to be relatively large, when a small-sized driving plate 200 (smaller than the size of the detection platform 1) is placed on it for detection, interference factors may appear in the captured detection picture, such as other items are placed on the detection platform 1 at the same time or the operator next to it is captured. If the captured detection picture is directly recognized, on the one hand, it may affect the recognition result, and on the other hand, it will also slow down the image recognition speed. Based on this, in this embodiment, after the driving plate 200 is fixed on the detection platform 1, and before the detection is performed, the operator can also select the position area of ​​the driving plate 200 on the detection platform 1 through the interactive interface 5, and then limit the recognition area of ​​the detection image, which reduces interference and improves the accuracy of the detection result on the one hand, and also improves the recognition speed on the other hand.

[0068] To be more specific, multiple rectangular frames of preset sizes can be pre-set in the system to adapt to different drive board sizes. The operator only needs to drag the corresponding rectangular frame to adapt to the installation position of the drive board. The preset size here is larger than the size of the corresponding drive board to adapt to the placement position deviation of the drive board. For example, the size of the drive board can be used as a reference, and a preset distance, such as 1 cm, can be extended outward on all sides as the preset size of the corresponding rectangular frame.

[0069] After placing the rectangular frame, a coordinate system can be established with the upper left corner of the entire detection platform 1 as the origin of the pixel coordinate system to obtain the pixel coordinates of the rectangular frame, that is, the pixel coordinates of the position area of ​​the driver board 200 on the detection platform 1, and then the collected detection images can be cropped based on the pixel coordinates, so that only the cropped image containing only the position area needs to be cropped to identify the problematic lamp beads.

[0070] In a preferred embodiment of the present invention, there are one or more image acquisition devices 2 , each image acquisition device 2 performs image acquisition synchronously, and each detection image acquired each time covers all the lamp beads 100 on the driving board 200 .

[0071] The present invention also provides a quality inspection method for lamp beads, using the above-mentioned quality inspection system, such as Figure 4 As shown, including:

[0072] Step S1, the quality control system controls the on / off mode of each lamp bead on the driving board to switch the screen to form a plurality of detection screens respectively, and simultaneously controls the image acquisition device to acquire each detection screen to obtain a plurality of detection images;

[0073] Step S2, the quality control system identifies the brightness of each lamp bead on each detection image, and generates a quality detection result based on the brightness.

[0074] The present invention also provides a television back panel, comprising a plurality of sub-millimeter light emitting diodes, the sub-millimeter light emitting diodes being used as lamp beads and applying the above-mentioned quality inspection system to perform product quality inspection.

[0075] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the contents of this specification and illustrations should be included in the protection scope of the present invention.

Claims

1. A quality inspection system for lamp beads, characterized in that: The lamp beads are multiple and distributed in an array on the driving board. The quality detection system includes: A detection platform, the driving board is fixed on the detection platform, and at least one image acquisition device is installed on a side of the driving board facing the lamp beads; A driving module, connected to the driving board and the image acquisition device, respectively, for controlling the on / off mode of each of the lamp beads on the driving board to switch the screen, so as to form a plurality of detection screens, and at the same time controlling the image acquisition device to acquire each of the detection screens to obtain a plurality of detection images; The detection module is connected to the driving module and is used to identify the problematic lamp beads on each of the detection images and generate corresponding quality detection results.

2. The quality inspection system according to claim 1, characterized in that: The detection module comprises: A first identification unit is used to respectively identify the brightness of each of the lighted lamp beads on each of the detection images, and identify the corresponding lamp beads as problematic lamp beads when the brightness is not within a preset threshold range; A generating unit, connected to the first identification unit, is used to generate a result schematic diagram as the quality detection result, wherein the result schematic diagram includes the position of the problematic lamp beads on each of the detection images on the driving board.

3. The quality inspection system according to claim 2, characterized in that: The array distribution has the long sides of the driving board as rows and the short sides as columns, the shooting range of the image acquisition device can at least cover the short side direction, and the on / off mode controls the on / off of the lamp beads according to rows or columns; The detection module comprises: A second identification unit is used to respectively identify the real-time number of the lighted lamp beads in each column on each of the detection images; A storage unit, used for storing the number of lamp beads that should be lit in each column under different on / off modes associated with the driver boards of different models; The third identification unit is respectively connected to the second identification unit, the storage unit and the generation unit, and is used to identify the lamp beads that should not be lit or should not be extinguished in the corresponding column as the problem lamp beads when the real-time number is inconsistent with the number of lamp beads.

4. The quality inspection system according to claim 1, characterized in that: It also includes an interactive interface connected to the detection module, through which an operator selects the model of the driver board and selects the location area of ​​the driver board on the detection table on the interactive interface; The detection module also includes: A denoising unit is used to obtain the pixel coordinates of the position area, and to crop each of the collected detection images based on the pixel coordinates, and to use the obtained cropped image containing only the position area as the detection image to identify the problematic lamp bead.

5. The quality inspection system according to claim 1, characterized in that: The on-off mode includes lighting in alternate rows, and the corresponding detection screen includes at least a first detection screen and a second detection screen, in which only the lamp beads in odd rows are lit in the first detection screen, and in the second detection screen, only the lamp beads in even rows are lit; and / or The on-off mode includes lighting up alternate columns, and the corresponding detection screen also includes a third detection screen and a fourth detection screen, in which only the lamp beads in odd columns are lit in the third detection screen, and in the second detection screen, only the lamp beads in even columns are lit; and / or The on-off mode includes first fully on and then fully off, and the corresponding detection screen also includes a fifth detection screen and a sixth detection screen. In the fifth detection screen, all the lamp beads are lit, and in the sixth detection screen, all the lamp beads are fully off.

6. The quality inspection system according to claim 1, characterized in that: The quality inspection result also includes a product quality inspection result, and the inspection module also includes a product inspection unit, which is used to output the quality inspection result that the driving board has a quality problem when the driving board cannot switch between the various inspection screens under the drive of the driving module.

7. The quality inspection system according to claim 1, characterized in that: There are one or more image acquisition devices, each of which acquires images synchronously, and each detection screen acquired each time covers all the lamp beads on the driving board together.

8. A method for detecting the quality of lamp beads, characterized in that: The quality inspection system according to any one of claims 1 to 7 is applied, comprising: Step S1, the quality control system controls the on / off mode of each lamp bead on the driving board to switch the screen to form a plurality of detection screens respectively, and simultaneously controls the image acquisition device to acquire each of the detection screens to obtain a plurality of detection images; Step S2, the quality control system identifies the brightness of each of the lamp beads on each of the detection images, and generates a quality detection result based on the brightness.

9. A television back panel, comprising a plurality of sub-millimeter light emitting diodes, characterized in that: The sub-millimeter light-emitting diode is used as a lamp bead and a quality inspection system as described in any one of claims 1 to 7 is used to perform product quality inspection.

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