Fully Automated Display Defect Detection System

Abstract

This utility model belongs to the technical field of defect detection equipment, and in particular to a fully automatic display defect detection system. It includes a support platform with a base on the platform. A first camera multi-axis robot and a second camera multi-axis robot are mounted on the base. The camera module includes a first camera module and a second camera module respectively mounted on the first and second camera multi-axis robots. The base also has a first light source multi-axis robot and a second light source multi-axis robot. The light source module includes a first light source module and a second light source module respectively mounted on the first and second light source multi-axis robots. The multi-axis robots can carry cameras or light sources and adjust them at different angles in different positions. This allows for flexibility and highly precise adjustment of position and angle parameters. The multi-axis robots can meet diverse detection angle requirements and can quickly and accurately move the camera and light source to the optimal detection position before performing the detection.

Description

Technical Field

[0001] This utility model belongs to the technical field of defect detection equipment, specifically relating to a fully automatic display defect detection system. Background Technology

[0002] Mura testing is a process that uses testing equipment to detect defects in the uneven display on the screen surface. It is mainly used to detect uneven brightness on liquid crystal displays (LCDs) and organic light-emitting diode (OLED) screens. Here, Mura means "spots" or "dirt," referring to display defects on the display.

[0003] In the prior art, for example, Chinese patent document CN219533563 describes a panel optical inspection device, and Chinese patent document CN219573885 describes a machine for detecting typical Mura defects and flaws in TFT panels, both of which are used to detect defects in displays.

[0004] The basic principle of Mura detection is as follows: The detection equipment is equipped with a transmission device, a line scan camera, and an LED line light source. The transmission device on the detection equipment transmits the image to the area that can be illuminated by the line scan camera and the LED line light source. The LED line light source enables the line scan camera to accurately and realistically capture the image of the area on the display. By analyzing the image, defects can be detected. When a Mura defect is detected, the detection equipment will trigger an alarm to provide a reminder.

[0005] The appearance of Mura on the monitor may vary under different viewing angles. Therefore, in defect detection, a comprehensive evaluation of the Mura situation under different angles is usually carried out. In order to optimize the Mura defect detection effect, while adjusting the camera angle, it is necessary to adjust the illumination of the light source to a better angle for reflective imaging so that the captured image can accurately reflect the real display situation of the monitor. Existing detection equipment has the following problems: (1) After verifying the optimal angle of the camera and light source in multiple positions, it is difficult to accurately reset to the optimal position in actual detection; (2) The detection angle values ​​of the camera and light source fluctuate greatly due to the difference in the skill of the operators; (3) The adjustment time of the camera and light source angle and the fixed parts (such as camera or light source loosening accidents) are inconsistent due to the uneven skill of the personnel, resulting in the lack of coordination in the detection process; (4) There may be operational negligence (body contact with surrounding parts during the angle adjustment process), and the risk of accidents is high; (5) When changing the detection conditions, it is necessary to repeatedly set manually, which affects the detection efficiency. Utility Model Content

[0006] The present invention aims to provide a fully automatic display defect detection system, which enables the automatic adjustment of the camera and light source angles during the display defect detection process and ensures the accuracy of the camera and light source angle adjustments.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A fully automated display defect detection system is provided, including a support platform, a base on the support platform, a conveying device for conveying the display to be inspected on the base, a camera module and a light source module on the upper side of the conveying device, a first camera multi-axis robot and a second camera multi-axis robot on the base, the camera module including a first camera module and a second camera module respectively mounted on the first camera multi-axis robot and the second camera multi-axis robot; the base also includes a first light source multi-axis robot and a second light source multi-axis robot, the light source module including a first light source module and a second light source module respectively mounted on the first light source multi-axis robot and the second light source multi-axis robot.

[0008] Preferably, a portal frame is provided on the base, and the first camera multi-axis robot and the second camera multi-axis robot are respectively mounted on the portal frame; vertical beams are respectively provided on both sides of the conveying device on the base, and the first light source multi-axis robot and the second light source multi-axis robot are respectively mounted on the vertical beams.

[0009] Preferably, multiple L-shaped support plates are provided between the two sides of the base and the support platform, and multiple shock-absorbing airbags are evenly arranged between the bottom surface of the base and the top surface of the support platform.

[0010] Preferably, the first camera module and the second camera module are line scan cameras, and the first light source module and the second light source module are LED line light sources.

[0011] Preferably, the first camera multi-axis robot, the second camera multi-axis robot, the first light source multi-axis robot, and the second light source multi-axis robot are all EPSON C8 multi-axis robots.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: The fully automatic display defect detection system includes a support platform, a base on the support platform, a conveying device for conveying the display to be inspected on the base, a camera module and a light source module on the upper side of the conveying device, a first camera multi-axis robot and a second camera multi-axis robot on the base, the camera module including a first camera module and a second camera module respectively mounted on the first camera multi-axis robot and the second camera multi-axis robot; the base also includes a first light source multi-axis robot and a second light source multi-axis robot, the light source module including a first light source module and a second light source module respectively mounted on the first light source multi-axis robot and the second light source multi-axis robot. By using the first camera multi-axis robot, the second camera multi-axis robot, the first light source multi-axis robot and the second light source multi-axis robot, the multi-axis robot can carry the camera or light source to adjust different angles at different positions, which is flexible and the adjustment parameters of position and angle are very precise. The multi-axis robot can cope with the detection needs of diverse detection angles. By installing multi-axis robots on the camera module and the lighting module respectively, it can quickly and accurately move to the optimal detection position for detection. The detection position parameters can be set once to quickly and accurately locate and execute the detection. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is one of the three-dimensional structural schematic diagrams of an embodiment of the fully automatic display defect detection system of this utility model.

[0014] Figure 2 This is the second three-dimensional structural schematic diagram of an embodiment of the fully automatic display defect detection system of this utility model.

[0015] Figure 3 This is the third three-dimensional structural schematic diagram of an embodiment of the fully automatic display defect detection system of this utility model.

[0016] In the diagram, the labels represent: support platform 1, base 2, conveying device 21, display 22, first camera multi-axis robot 23, first camera module 231, second camera multi-axis robot 24, second camera module 241, first light source multi-axis robot 25, first light source module 251, second light source multi-axis robot 26, second light source module 261, L-shaped support plate 27, shock-absorbing airbag 28, gantry frame 3, upright beam 4, second detection device 5, and third detection device 6. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] In one embodiment, a fully automated display defect detection system is provided, such as... Figure 1-2 As shown, the fully automatic display defect detection system includes a support platform 1 with leveling feet at its bottom. A base 2 is mounted on the support platform 1, and a conveying device 21 for transporting the display 22 to be inspected is mounted on the base 2. The conveying device 21 transports the display 22 from one side to the other. A camera module and a light source module are mounted on the upper side of the conveying device 21. A first camera multi-axis robot 23 and a second camera multi-axis robot 24 are mounted on the base 2. The camera module includes a first camera module 231 and a second camera module 241 respectively mounted on the first camera multi-axis robot 23 and the second camera multi-axis robot 24. The first camera multi-axis robot 23 can adjust the shooting position and angle by carrying the first camera module 231, and the second camera multi-axis robot 24 can adjust the shooting position and angle by carrying the second camera module 241. A first light source multi-axis robot 25 and a second light source multi-axis robot 26 are also mounted on the base 2. The light source module includes a first light source module 251 and a second light source module 261 respectively mounted on the first light source multi-axis robot 25 and the second light source multi-axis robot 26. The first light source multi-axis robot 25 can carry the first light source module 251 to adjust the position and angle of illumination, and the second light source multi-axis robot 26 can carry the second light source module 261 to adjust the position and angle of illumination.

[0019] The first camera module 231 and the second camera module 241 are line scan cameras, and the first light source module 251 and the second light source module 261 are LED line light sources. The line scan camera and the LED line light source are more suitable for the detection of displays.

[0020] When performing defect detection on the display, the first camera module 231 and the first light source module 251 cooperate with each other, and the second camera module 241 and the second light source module 261 cooperate with each other. The first light source module 251 provides light to the area captured by the first camera module 231, and the second light source module 261 provides light to the area captured by the second camera module 241. The first camera module 231 and the first light source module 251 form one visual inspection device, and the second camera module 241 and the second light source module 261 form another visual inspection device. The two sets of visual inspection devices can alternate, improving inspection efficiency and ensuring that the display can be fully inspected without missing any areas.

[0021] In this embodiment, the first camera multi-axis robot 23, the second camera multi-axis robot 24, the first light source multi-axis robot 25, and the second light source multi-axis robot 26 are all EPSON C8 multi-axis robots. The multi-axis robots can automatically adjust the detection position and angle according to the set parameters and automatically calibrate, which can meet the following detection requirements: (1) By quickly and accurately adjusting the multi-angle changes of (camera / light source), the optimal detection angle for various defects to be inspected can be adapted, thereby maximizing detection efficiency and improving equipment reliability; (2) Through multi-axis robot teaching, standardized training of operator skills can be achieved; (3) Based on the position and angle data pre-stored by the multi-axis robot controller, ultra-high standard repeated positioning can be achieved, with high accuracy and minimal deviation in each execution; (4) When parameters change, the multi-axis robots of the camera and the light source can be linked to achieve automatic adjustment of position and angle parameters; (5) Through the simple button operation set on the outside of the equipment, external manual control can be achieved, eliminating accidents caused by internal contact; (6) By inputting the corresponding data, the detection position change requirements can be quickly responded to, ensuring zero detection delay and improving efficiency.

[0022] like Figure 1 As shown, in one embodiment, the fully automated display defect detection system, in addition to a visual inspection device consisting of a camera and a light source, also includes a second inspection device 5 and a third inspection device 6. The second inspection device 5 is a re-inspection moving platform, and the third inspection device 6 is an inspection moving platform. The second inspection device 5 performs photoelectric performance testing, used to detect parameters such as the display's resolution, pixel pitch, assembly accuracy, viewing angle, brightness, and contrast. The third inspection device 6 performs non-destructive testing, used to detect internal physical defects in the display. The second inspection device 5 and the third inspection device 6 are existing devices and will not be described in detail here.

[0023] As can be seen from the above embodiments, the fully automatic display defect detection system uses a first camera multi-axis robot 23, a second camera multi-axis robot 24, a first light source multi-axis robot 25, and a second light source multi-axis robot 26. The multi-axis robot can carry the camera or light source to adjust different angles at different positions, which is flexible and the position and angle adjustment parameters are very precise. The multi-axis robot can meet the detection needs of diverse detection angles. By installing multi-axis robots in the camera module and the lighting module respectively, it can quickly and accurately move to the best detection position to carry out detection. The detection position parameters can be set once to quickly and accurately locate and execute the detection.

[0024] Furthermore, such as Figure 1-2As shown, a portal frame 3 is provided on the base 2, and the support legs on both sides of the portal frame 3 are fixed to the top surface of the base 2. The first camera multi-axis robot 23 and the second camera multi-axis robot 24 are respectively set on the portal frame 3. By setting the portal frame, the display 22 can pass under it without obstructing the movement of the display. On the base 2, upright beams 4 are respectively provided on both sides of the conveyor 21. The first light source multi-axis robot 25 and the second light source multi-axis robot 26 are respectively set on the upright beams 4 on both sides. The upright beams 4 are also set to avoid obstructing the movement of the display 22.

[0025] Furthermore, in combination Figure 1-3 As shown, multiple L-shaped support plates 27 are respectively provided between the two sides of the base 2 and the support platform 1, and multiple shock-absorbing airbags 28 are evenly arranged between the bottom surface of the base 2 and the top surface of the support platform 1. The base 2 and the support platform 1 are connected by the L-shaped support plates 27 to prevent the base 22 from shifting on the horizontal plane. By setting the shock-absorbing airbags 28, the base 2 can be used for shock absorption, making the display 22 more stable during movement and preventing damage during the testing process.

[0026] It should be noted that, unless otherwise defined, all terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains, and terms such as those defined in a common dictionary should be interpreted as having a meaning consistent with their meaning in the context of the relevant art. It should also be understood that the above is a description of this disclosure and should not be considered as a limitation thereof. Although several exemplary embodiments of this disclosure have been described, those skilled in the art will readily understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this invention. Therefore, all such modifications are intended to be included within the scope of this disclosure as defined in the claims, and will not be detailed here.

Claims

1. A fully automatic display defect detection system, comprising a support platform, a base on the support platform, a conveying device for conveying the display to be inspected on the base, and a camera module and a light source module on the upper side of the conveying device, characterized in that: The base is provided with a first camera multi-axis manipulator and a second camera multi-axis manipulator. The camera module includes a first camera module and a second camera module respectively disposed on the first camera multi-axis manipulator and the second camera multi-axis manipulator. The base is also provided with a first light source multi-axis manipulator and a second light source multi-axis manipulator. The light source module includes a first light source module and a second light source module respectively disposed on the first light source multi-axis manipulator and the second light source multi-axis manipulator.

2. The fully automated display defect detection system of claim 1, wherein: A gantry frame is provided on the base, and the first camera multi-axis robot and the second camera multi-axis robot are respectively mounted on the gantry frame; upright beams are provided on both sides of the conveying device on the base, and the first light source multi-axis robot and the second light source multi-axis robot are respectively mounted on the upright beams.

3. The fully automated display defect detection system of claim 1, wherein: Multiple L-shaped support plates are provided between the two sides of the base and the support platform, and multiple shock-absorbing airbags are evenly arranged between the bottom surface of the base and the top surface of the support platform.

4. The fully automated display defect detection system of claim 1, wherein: The first camera module and the second camera module are line scan cameras, and the first light source module and the second light source module are LED line light sources.

5. The fully automated display defect detection system of claim 1, wherein: The first camera multi-axis robot, the second camera multi-axis robot, the first light source multi-axis robot, and the second light source multi-axis robot are all EPSON C8 multi-axis robots.

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