Display screen detection equipment

Abstract

The utility model provides a display screen detection device, comprising: a frame having a detection area in which a to-be-detected display screen can be placed; the lifting frame is arranged on the rack in a lifting manner and is positioned above the detection area; the two moving beams are movably arranged on the lifting frame in the first direction, an angle is formed between the first direction and the height direction, an angle is formed between the length direction of each moving beam and the first direction, and an angle is formed between the length direction of each moving beam and the height direction, and the moving beams are arranged at intervals in the first direction; the front view detection device comprises a plurality of first image collectors, each moving beam is provided with two first image collectors, and the first image collectors can translate in the length direction of the moving beams; wherein the distance between the moving beams and the distance between the two first image collectors located on the same moving beam are adjusted, so that all the image collection areas of the front-view detection device can completely cover the display screen. The display screen detection equipment provided by the embodiment of the utility model can be suitable for detection of display screens with different sizes.

Description

Technical Field

[0001] This application belongs to the field of display screen testing technology, and more specifically, relates to a display screen testing device. Background Technology

[0002] In the production of OLED displays, image inspection is required after the OLED displays are powered on. Image inspection is one related technology, which involves placing the OLED display under a camera and capturing images for inspection. However, OLED displays are widely used and come in various sizes, making existing technologies difficult to apply to the inspection of the diverse range of OLED displays. Utility Model Content

[0003] This application provides a display screen testing device that is applicable to the testing of displays of different sizes.

[0004] The technical solution adopted in this application embodiment is: to provide a display screen testing device, including:

[0005] The rack has a testing area, in which the display screen to be tested can be placed;

[0006] A lifting frame is vertically mounted on the frame and located above the detection area;

[0007] Two movable beams are movably disposed on the lifting frame along a first direction, the first direction forming an angle with the height direction, and the length direction of the movable beams forming an angle with the first direction and the height direction respectively. Each of the movable beams is spaced apart along the first direction.

[0008] The frontal detection device includes multiple first image acquisition devices, with each moving beam equipped with two first image acquisition devices, and the first image acquisition devices can be translated along the length direction of the moving beam.

[0009] By adjusting the spacing of the moving beams and the spacing between the two first image acquisition units located on the same moving beam, the entire image acquisition area of ​​the frontal detection device can completely cover the display screen.

[0010] Furthermore, the display screen has a first center line and a second center line, which divide the display screen into four test areas. The first center line is parallel to the first direction, and the second center line is perpendicular to the first center line.

[0011] Two movable beams are symmetrically arranged on both sides of the second center line, and two first image acquisition devices on the movable beams are symmetrically arranged on both sides of the first center line. The image acquisition area of ​​each first image acquisition device covers one of the areas to be tested.

[0012] Furthermore, the frontal vision detection device also includes a first driving component corresponding to the first image acquisition unit, the first driving component comprising:

[0013] A first slide rail is provided on the movable beam and extends along the length direction of the movable beam;

[0014] A first slider is slidably disposed on the first slide rail, and the first image acquisition device is connected to the first slider;

[0015] A first driver is used to drive the first slider to move;

[0016] The two first drive components on the same moving beam are located on both sides of the first centerline.

[0017] Furthermore, the frontal vision detection device also includes a movable frame and a multi-dimensional adjustment mechanism. The movable frame is movably mounted on the movable beam, and the multi-dimensional adjustment mechanism includes:

[0018] A lifting component is vertically mounted on the movable frame, and the lifting component includes a first rotating shaft arranged in a horizontal direction;

[0019] The first rotating component includes a protruding first connecting lug and a second rotating shaft arranged in a horizontal direction. The first connecting lug is rotatably connected to the first rotating shaft, and the second rotating shaft is perpendicular to the first rotating shaft.

[0020] A first adjusting rod passes through the lifting member and one end abuts against the first rotating member. The length of the first adjusting rod passing through the lifting member is adjustable.

[0021] The second rotating component includes a protruding second connecting lug and a third rotating shaft arranged in a vertical direction, wherein the second connecting lug is rotatably connected to the second rotating shaft;

[0022] The second adjusting rod passes through the second rotating member and one end abuts against the first rotating member. The length of the second adjusting rod passing through the second rotating member is adjustable.

[0023] The third rotating component includes a protruding third connecting ear, which is rotatably connected to the third rotating shaft, and the first image acquisition device is disposed on the third rotating component;

[0024] The third adjusting rod passes through the second rotating member and one end abuts against the third rotating member. The length of the third adjusting rod passing through the second rotating member is adjustable.

[0025] Furthermore, the two ends of the moving beam are slidably connected to the lifting frame, and the display screen detection device further includes a second driving component, which includes:

[0026] A rack is disposed on the lifting frame and extends along the first direction;

[0027] A gear is rotatably disposed at one end of the movable beam and meshes with the rack;

[0028] A second drive is located on the moving beam and connected to the gear to drive the gear to rotate.

[0029] Furthermore, the display screen detection device also includes lifting drive components located on both sides of the lifting frame, the lifting drive components including:

[0030] A lifting platform is slidably mounted on the frame along the height direction;

[0031] A lifting nut is provided on the lifting platform;

[0032] A first lead screw is provided on the frame along the height direction, and a lifting nut is fitted onto the first lead screw;

[0033] The third driver is used to drive the first lead screw to rotate;

[0034] The lifting frame is connected to two lifting platforms at both ends.

[0035] Furthermore, the display screen detection device also includes a side-image detection device, which includes multiple second image acquisition units located around the detection area. The second image acquisition units are tilted towards the display screen, and the image acquisition areas of each second image acquisition unit are respectively aligned with a portion of the display screen. The image acquisition areas of adjacent second image acquisition units partially overlap, and the entire image acquisition area of ​​the side-image detection device completely covers the display screen.

[0036] Furthermore, the side-image detection device also includes an angle adjuster corresponding to the second image acquisition unit. The angle adjuster is located on the frame and connected to the second image acquisition unit. The angle adjuster is used to adjust the tilt angle of the second image acquisition unit.

[0037] Furthermore, the angle adjuster includes:

[0038] A mounting base is provided on the frame, and the mounting base has a concave arc surface;

[0039] An adjustment base is provided with a convex arc surface that matches the concave arc surface. The convex arc surface rotates in contact with the concave arc surface. The second image acquisition device is located on the adjustment base.

[0040] A locking element is used to secure the adjusting seat and the fixed seat.

[0041] Furthermore, it also includes a third image acquisition device, which is located in the lifting frame and between the two moving beams. The image acquisition device is used to detect Mura defects and color deviations on the display screen.

[0042] The beneficial effects of the display screen inspection device provided in this application embodiment are as follows: In the display screen inspection device of this application embodiment, the lifting frame is located above the rack inspection area, ensuring that the distance between the first image acquisition device and the display screen is appropriate, so that the acquired image is clear and complete, and avoids image loss or distortion caused by improper distance. For display screens of different lengths, the distance between the moving beams is reduced when inspecting short screens, and increased when inspecting long screens, so that the first image acquisition device can accurately cover all areas of the display screen in that direction. For display screens of different widths, the first image acquisition device can be moved horizontally along the length direction of the moving beam. When inspecting narrow screens, the two first image acquisition devices can be brought closer to each other, and when inspecting wide screens, they are pulled apart to both ends, ensuring that the entire image acquisition area of ​​the front-view inspection device can completely cover the display screen, so that all images of the display screen are completely acquired without omission. Through this series of height, first direction, and length direction adjustment actions, the position of each first image acquisition device can be flexibly adjusted according to the actual size of the display screen, ensuring that the front-view inspection device can perfectly adapt to the display screen regardless of the size of the display screen, comprehensively and accurately acquire display screen images, efficiently complete the inspection task, greatly improve the versatility and inspection accuracy of the equipment, and meet diverse display screen inspection needs. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is a three-dimensional structural diagram of the display screen testing device provided in the embodiments of this application;

[0045] Figure 2 A three-dimensional structural diagram of the lifting frame and its upper components provided in an embodiment of this application;

[0046] Figure 3 A side view of the lifting frame and its upper components provided in an embodiment of this application;

[0047] Figure 4 A schematic diagram of the test area and image acquisition area divided on the display screen provided in an embodiment of this application;

[0048] Figure 5 for Figure 2 Enlarged view of point A in the middle;

[0049] Figure 6 A three-dimensional structural schematic diagram of the multi-dimensional adjustment mechanism provided in the embodiments of this application;

[0050] Figure 7 A three-dimensional structural schematic diagram of the multi-dimensional adjustment mechanism provided in an embodiment of this application from another angle;

[0051] Figure 8 This is a front view of the display screen detection device provided in an embodiment of this application;

[0052] Figure 9 for Figure 1 A magnified view of point B in the middle.

[0053] The following are the labeling elements in the figure:

[0054] 10. Rack; 11. Inspection area;

[0055] 20. Lifting frame;

[0056] 30. Moving beam;

[0057] 40. Frontal vision detection device; 41. First image acquisition unit; 411. Image acquisition area; 42. First drive assembly; 421. First slide rail; 422. First slider; 423. First driver; 43. Moving frame; 44. Multi-dimensional adjustment mechanism; 441. Lifting component; 4411. First rotating shaft; 4412. First vertical plate; 4413. First horizontal plate; 442. First rotating component; 4421. First connecting ear; 4422. Second rotating shaft; 443. First adjusting rod; 444. Second rotating component; 4441. Second connecting ear; 4442. Third rotating shaft; 4443. Second vertical plate; 4444. Second horizontal plate; 445. Second adjusting rod; 446. Third rotating component; 4461. Third connecting ear; 447. Third adjusting rod;

[0058] 50. Second drive assembly; 51. Rack; 52. Gear; 53. Second driver;

[0059] 60. Lifting drive assembly; 61. Lifting platform; 62. First lead screw; 63. Third drive unit;

[0060] 70. Side-view detection device; 71. Second image acquisition device; 72. Angle adjuster; 721. Fixing base; 722. Adjusting base; 7221. Convex arc surface; 723. Locking component;

[0061] 80. Third image acquisition device;

[0062] 90. Display screen; 91. First center line; 92. Second center line; 93. Area to be tested;

[0063] X, the first direction. Detailed Implementation

[0064] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0065] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0066] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0067] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0068] Please see Figure 1 The display screen testing equipment provided in the embodiments of this application will now be described. The display screen testing equipment provided in the embodiments of this application includes a frame 10, a lifting frame 20, two moving beams 30, and a front-view testing device 40.

[0069] Reference Figure 1 The rack 10 has a testing area 11, where the display screen 90 to be tested can be placed. The rack 10 serves as the basic framework structure of the entire display screen testing equipment. The rack 10 has a specially designed testing area 11, large enough to accommodate various common sizes of display screens 90 to be tested, including small mobile phone screens 90, medium-sized tablet screens 90, and larger computer monitor screens 90. All can be stably placed on this testing area 11 for subsequent testing processes. Within the testing area 11, the display screen 90 to be tested can be illuminated to form an image. Specifically, the display screen can be an OLED screen.

[0070] Reference Figure 1 and Figure 2 The lifting frame 20 is vertically mounted on the frame 10 and located above the inspection area 11. The lifting frame 20 resembles a rectangular frame that can move flexibly up and down in the vertical direction, and can be made of a durable yet relatively lightweight metal material such as aluminum alloy. The lifting movement of the lifting frame 20 is typically achieved using a specific power device, such as a motor drive system that drives a lead screw and nut assembly, or by using hydraulic or pneumatic transmission devices, thereby achieving precise lifting operations along the vertical direction of the frame 10. For example, when inspecting smaller and thinner mobile phone displays 90, the lifting frame 20 can descend to a lower height, allowing subsequent inspection equipment to get closer to the surface of the display 90 to obtain more accurate and detailed inspection data. When inspecting large television displays 90, the lifting frame 20 will rise to an appropriate height to ensure that the inspection equipment can fully cover the entire display 90 area, without missing any details.

[0071] Reference Figure 2 The movable beams 30 are movably mounted on the lifting frame 20 along the first direction X. The length of the movable beams 30 is perpendicular to the first direction X, and the movable beams 30 are spaced apart along the first direction X. The first direction forms an angle with the height direction, such as 90°, 80°, 45°, etc. The length direction of the movable beams forms an angle with the first direction X and the height direction, such as 90°, 80°, 45°, etc. There are two movable beams 30 in total. The movable beams 30 have a long strip shape and move along the first direction X, for example, the horizontal direction is set as the first direction X. The realization of this movement function relies on a precise mechanical transmission structure. For example, a high-precision guide rail and slider assembly are pre-installed on the lifting frame 20. The movable beams 30 are closely connected to the slider. At the same time, the motor drives the lead screw and nut mechanism to operate or the electrode drives the gear 52 and rack 51 mechanism to operate, thereby driving the movable beams 30 to perform precise and stable displacement movement along the guide rail in the first direction X.

[0072] The two movable beams 30 are spaced apart in the first direction X, and the distance between them can be flexibly adjusted according to the different lengths of the display screen 90 to be inspected. For example, when inspecting a short-sized display screen 90, the two movable beams 30 can be brought closer to each other in the first direction X to adapt to the shorter length of the display screen 90; while when inspecting a long-sized display screen 90, the two movable beams 30 can be moved further apart in the first direction X to ensure effective coverage of all areas of the display screen 90 along its length, thus meeting the inspection requirements of display screens 90 of different lengths.

[0073] Reference Figure 2 and Figure 3 The frontal vision detection device 40 includes multiple first image acquisition units 41. Each moving beam 30 is equipped with two first image acquisition units 41, and the first image acquisition units 41 can be translated along the length of the moving beam 30. By adjusting the spacing of the moving beams 30 and the spacing between two first image acquisition units 41 located on the same moving beam 30, the entire image acquisition area 411 of the frontal vision detection device 40 can completely cover the display screen 90.

[0074] The display screen 90 can be divided into multiple areas, with the number of each area corresponding to the number of the first image acquisition units 41. The first image acquisition units 41 can face the display screen 90 from top to bottom, with the image acquisition area 411 of each first image acquisition unit 41 aligned with the corresponding area of ​​the display screen 90. The image acquisition areas 411 of adjacent first image acquisition units 41 partially overlap, and all the image acquisition areas 411 of the front-view detection device 40 completely cover the display screen 90.

[0075] The first image acquisition unit 41 can be a high-resolution industrial camera, such as a common CCD or CMOS camera. It has the ability to translate along the length of the moving beam 30. For example, a high-precision guide rail and slider assembly is installed on the moving beam 30. The first image acquisition unit 41 is closely connected to the slider, and a motor drives a lead screw and nut mechanism to move, thereby causing the first image acquisition unit 41 to move precisely and smoothly along the guide rail in the length of the moving beam 30. From a vertical perspective, these first image acquisition units 41 are precisely facing the display screen 90 placed below in the detection area 11 of the frame 10. The image acquisition area 411 corresponding to each first image acquisition unit 41 can cover a specific area of ​​the display screen 90, and there is a deliberately designed overlap between the image acquisition areas 411 of adjacent first image acquisition units 41. This ensures that both the central critical area of ​​the display screen 90 and the more easily overlooked edge areas can be completely and without omissions within the detection range. The four acquired images can also be processed to form a large image to fully display the overall image of the display screen 90.

[0076] For example, when testing a tablet computer display screen 90, the four first image acquisition units 41 distributed on the two moving beams 30 can achieve all-round, no-dead-angle image acquisition of the entire tablet computer display screen 90 by flexibly moving on the moving beams 30 and by cleverly combining the image acquisition areas 411. This provides a solid and reliable data foundation for subsequent in-depth analysis and accurate judgment of various performance indicators of the display screen 90. These performance indicators cover many key aspects such as the uniformity of pixel brightness, the accuracy of color display, and the presence of dead pixels or bright pixels.

[0077] Based on the above structure, the working process of the display screen detection device in this application embodiment is as follows:

[0078] 1. Place the display screen 90 to be tested in the testing area 11 of the frame 10 and turn on the lights. Then, according to the height of the display screen 90, the lifting frame 20 is raised and lowered by the power device (such as a motor-driven screw) to adjust to a suitable height so that the front-view testing device 40 and the display screen 90 maintain an appropriate distance to ensure that a clear image is obtained.

[0079] 2. Based on the length of the display screen 90, the two moving beams 30 move along the first direction X on the lifting frame 20 (for example, the long side direction of the display screen 90), and adjust the interval between them so that the first image acquisition unit 41 can be aligned with the corresponding area of ​​the display screen 90 in the length direction.

[0080] 3. The first image acquisition device 41 on each moving beam 30 translates along the length of the beam and determines its position according to the width of the display screen 90. Since the image acquisition areas 411 of adjacent acquisition devices partially overlap and can completely cover the display screen 90, the device can accurately locate each part of the display screen 90.

[0081] 4. The first image acquisition unit 41 is activated to capture images of the display screen 90 from above, thereby obtaining image information of the display screen 90. These images are then analyzed and processed to determine whether the various performance indicators of the display screen 90 meet the standards, such as pixel brightness, color accuracy, and the presence of dead pixels.

[0082] Reference Figure 2 and Figure 4 The display screen 90 has a first center line 91 and a second center line 92, which divide the display screen 90 into four test areas 93. The first center line 91 is parallel to the first direction X, and the second center line 92 is perpendicular to the first center line 91. The function of these two center lines is to divide the display screen 90 into four equally sized test areas 93. For example, for a rectangular display screen, if the direction of its longer side is set as the first direction X, then the line parallel to that side is the first center line 91, and the line perpendicular to this side and bisects the display screen 90 is the second center line 92. Through these two center lines, the display screen 90 is divided into four equal parts as if by a cross, each part becoming an independent test area 93, so that the subsequent testing device can perform targeted testing and analysis on different areas.

[0083] Two movable beams 30 are symmetrically arranged on both sides of the second center line 92. Two first image acquisition devices 41 on the movable beams 30 are symmetrically arranged on both sides of the first center line 91. The image acquisition area 411 of each first image acquisition device 41 covers a test area 93.

[0084] With the second center line 92 as the axis of symmetry, two moving beams 30 are located on the left and right sides of the center line 92, respectively, and their distances from the center line 92 are equal. Two first image acquisition units 41 are installed on each moving beam 30, and their positions on the moving beam 30 are symmetrical about the first center line 91 of the display screen 90. For example, on a certain moving beam 30, one first image acquisition unit 41 is close to one end of the moving beam 30 and located on one side of the first center line 91, while the other is close to the other end of the moving beam 30 and located on the other side of the first center line 91, and their vertical distances from the first center line 91 are the same. This layout design allows the image acquisition area 411 of each first image acquisition unit 41 to accurately correspond to and cover a test area 93. When the device is running, each first image acquisition unit 41 can independently acquire images of its corresponding test area 93, thereby comprehensively acquiring image information from all areas of the entire display screen 90, avoiding omissions and duplicate detections, and providing effective assurance for accurately evaluating the overall quality of the display screen 90.

[0085] Reference Figure 2 and Figure 5 The frontal detection device 40 also includes a first driving component 42 corresponding to the first image acquisition unit 41. The first driving component 42 includes a first slide rail 421, a first slider 422 and a first driver 423.

[0086] The first slide rail 421 is disposed on the moving beam 30 and extends along the length of the moving beam 30. The first slide rail 421 has a long strip-shaped structure and is used to guide the movement of related components along the length of the moving beam 30.

[0087] The first slider 422 is slidably mounted on the first slide rail 421, and the first image acquisition device 41 is connected to the first slider 422. The bottom of the first slider 422 is typically designed with a groove or protrusion structure that matches the shape of the first slide rail 421. Through this concave-convex fit, the first slider 422 can stably "fit" into the first slide rail 421 and slide smoothly on its surface. The first image acquisition device 41 is connected to the first slider 422. This connection can be achieved through bolt fastening, slot insertion, or other reliable mechanical connection methods, allowing the first image acquisition device 41 to adjust its position along the length of the moving beam 30 as the first slider 422 moves.

[0088] The first driver 423 drives the first slider 422 to move, thereby moving the first image acquisition unit 41 to a designated position. Specifically, the first driver 423 uses a lead screw and nut mechanism to drive the first slider 422. The lead screw and nut mechanism mainly consists of a lead screw and a nut. The lead screw is a slender rod with threads, which is mounted on the moving beam 30 via bearings, and its axis is parallel to the length direction of the first slide rail 421. The nut is connected to the first slider 422. When the lead screw rotates under the drive of the motor, the nut moves linearly along the axis of the lead screw due to the thread, thereby driving the first slider 422 to slide on the first slide rail 421, realizing the reciprocating motion of the first image acquisition unit 41 along the length direction of the moving beam 30. This meets the needs of image acquisition at different positions of the display screen 90. Furthermore, by precisely controlling the speed and direction of rotation of the motor, the position of the first image acquisition unit 41 can be precisely adjusted, ensuring the accuracy and reliability of image acquisition.

[0089] In this configuration, two first drive components 42 on the same moving beam 30 are positioned on either side of the first center line 91. The first center line 91 divides the display screen 90 in two, and the two first drive components 42 on the same moving beam 30 are respectively located on either side of the first center line 91, with equidistant vertical distances from the first center line 91. This symmetrical layout allows the first image acquisition units 41, each connected to one of the two first drive components 42, to also be symmetrically distributed on either side of the first center line 91. Each can then cover different test areas 93 of the display screen 90, ensuring that image acquisition of all areas of the display screen 90 is carried out in an orderly, comprehensive, and accurate manner, without any omissions or overlaps in the acquisition area. This contributes to a more efficient and accurate completion of the overall condition detection task of the display screen 90. When controlling the operation of the first drive components 42, the same command can be used to make the two first image acquisition units 41 move towards or in opposite directions, simplifying the control process.

[0090] Reference Figure 3 , Figure 6 and Figure 7 The frontal detection device 40 also includes a movable frame 43 and a multi-dimensional adjustment mechanism 44. The movable frame 43 is movably mounted on the movable beam 30. The multi-dimensional adjustment mechanism 44 includes a lifting component 441, a first rotating component 442, a first adjusting rod 443, a second rotating component 444, a second adjusting rod 445, a third rotating component 446, and a third adjusting rod 447.

[0091] The movable frame 43 can move along the movable beam 30, providing a basic platform for the subsequent adjustment mechanism and the first image acquisition unit 41 to flexibly change position along the length of the movable beam 30.

[0092] Reference Figure 3 , Figure 6 and Figure 7 The lifting component 441 is vertically mounted on the movable frame 43 and includes a first rotating shaft 4411 arranged horizontally. The lifting component 441 can be an "L"-shaped structure, including a first vertical plate 4412 and a first horizontal plate 4413. One end of the horizontal plate is fixed to the lower end of the first vertical plate 4412, and the first vertical plate 4412 is slidably connected to the movable component for lifting. The first horizontal plate 4413 has first rotating shafts 4411 protruding from both ends. The lifting component 441 can be raised and lowered on the movable frame 43 via a motor screw and nut mechanism, thereby changing the vertical distance between the first image acquisition unit 41 and the display screen 90 and controlling the image distance.

[0093] The first rotating component 442 includes a protruding first connecting lug 4421 and a horizontally oriented second rotating shaft 4422. The first connecting lug 4421 is rotatably connected to the first rotating shaft 4411, and the second rotating shaft 4422 is perpendicular to the first rotating shaft 4411. The first rotating component 442 is generally a horizontal plate structure with two protruding first connecting lugs 4421 at both ends. The first connecting lugs 4421 have shaft holes that are rotatably connected to the first rotating shaft 4411, thereby allowing the first rotating component 442 to rotate and change direction. The first rotating component 442 has protruding second rotating shafts 4422 at both ends.

[0094] Reference Figure 3 , Figure 6 and Figure 7 A first adjusting rod 443 passes through the lifting member 441 and abuts against the first rotating member 442 at one end. The length of the first adjusting rod 443 passing through the lifting member 441 is adjustable. A screw hole is provided on the first horizontal plate 4413 of the lifting member 441. The first adjusting rod 443 is threaded, and after passing through the screw hole, it abuts against the first rotating member 442. By adjusting the length of the first adjusting rod 443, the rotation angle of the first rotating member 442 can be changed by abutting against it. Preferably, there are two first adjusting rods 443, located on both sides of the first rotating shaft 4411. The two first adjusting rods 443 can cooperate to adjust and fix the rotation angle of the first rotating member 442. More preferably, there are four first adjusting rods 443, with two first adjusting rods 443 on each side of the first rotating shaft 4411, resulting in more stable adjustment.

[0095] The second rotating member 444 includes a protruding second connecting ear 4441 and a third rotating shaft 4442 arranged vertically. The second connecting ear 4441 is rotatably connected to the second rotating shaft 4422. The second rotating member 444 can be a "┌" shaped structure, including a second vertical plate 4443 and a second horizontal plate 4444. One end of the second horizontal plate 4444 is fixed to the upper end of the second vertical plate 4443. Two protruding second connecting ears 4441 are provided at both ends of the second horizontal plate 4444. The second connecting ears 4441 are provided with shaft holes and are rotatably connected to the second rotating shaft 4422, thereby allowing the second rotating member 444 to rotate and change direction. Since the second rotating shaft 4422 is perpendicular to the first rotating shaft 4411, the rotation direction of the second rotating member 444 is different from the rotation direction of the first rotating member 442. The second vertical plate 4443 is provided with a vertical rotating shaft so that the third rotating member 446 can rotate around the vertical axis.

[0096] Reference Figure 3 , Figure 6 and Figure 7 The second adjusting rod 445 passes through the second rotating member 444 and abuts against the first rotating member 442 at one end. The length of the second adjusting rod 445 passing through the second rotating member 444 is adjustable. Specifically, the second horizontal plate 4444 of the second rotating member 444 is provided with a screw hole, and the second adjusting rod 445 is threaded. After passing through the screw hole, it abuts against the first rotating member 442. By adjusting the length of the second adjusting rod 445, the rotation angle of the second rotating member 444 can be changed by abutting against it. Preferably, there are two second adjusting rods 445, located on both sides of the second rotating shaft 4422. The two second adjusting rods 445 can cooperate to adjust and fix the rotation angle of the second rotating member 444. More preferably, there are four second adjusting rods 445, with two second adjusting rods 445 on each side of the second rotating shaft 4422, resulting in more stable adjustment.

[0097] The third rotating component 446 includes a protruding third connecting ear 4461, which is rotatably connected to the third rotating shaft 4442. The first image acquisition device 41 is disposed on the third rotating component 446. The third rotating component 446 is generally a vertical plate-like structure with two protruding third connecting ears 4461 at its upper and lower ends. The third connecting ears 4461 are provided with shaft holes and are rotatably connected to the third rotating shaft 4442, thereby allowing the third rotating component 446 to rotate around the vertical third rotating shaft 4442 and change direction.

[0098] Reference Figure 3 , Figure 6 and Figure 7A third adjusting rod 447 passes through the second rotating member 444 and abuts against the third rotating member 446 at one end. The length of the third adjusting rod 447 passing through the second rotating member 444 is adjustable. Specifically, a screw hole is provided on the second vertical plate 4443 of the second rotating member 444, and the third adjusting rod 447 is threaded. After passing through the screw hole, it abuts against the third rotating member 446. By adjusting the length of the third adjusting rod 447, the rotation angle of the third rotating member 446 can be changed by abutting against it. Preferably, there are two third adjusting rods 447, located on both sides of the third rotating shaft 4442. The two third adjusting rods 447 can cooperate to adjust and fix the rotation angle of the third rotating member 446. More preferably, there are four third adjusting rods 447, with two third adjusting rods 447 on each side of the third rotating shaft 4442, resulting in more stable adjustment.

[0099] The lifting component 441 in the multi-dimensional adjustment mechanism 44 can be raised and lowered along the movable frame 43, allowing for fine adjustment of the vertical distance between the first image acquisition unit 41 and the display screen 90. This achieves the effect of adapting to different heights of the display screen 90 and acquiring image information at different depths. The structure utilizes a first rotating component 442 rotating around a first rotating shaft 4411 in a horizontal plane, a second rotating component 444 rotating around a second rotating shaft 4422 in a vertical plane, and a third rotating component 446 rotating around a third rotating shaft 4442 in another horizontal plane. Furthermore, the first adjusting rod 443 adjusts the angle of the first rotating component 442 around the first rotating shaft 4411, the second adjusting rod 445 controls the angle of the second rotating component 444 around the second rotating shaft 4422, and the third adjusting rod 447 adjusts the angle of the third rotating component 446 around the third rotating shaft 4442. This achieves precise alignment with different positions and shapes of the display screen 90, effectively compensating for positional shifts caused by equipment installation deviations or uneven placement of the display screen 90, and providing a precise and reliable data foundation for the detection of the display screen 90.

[0100] Reference Figure 1 and Figure 2 The moving beam 30 is slidably connected to the lifting frame 20 at both ends. The display screen detection device also includes a second drive assembly 50, which includes a rack 51, a gear 52, and a second driver 53. The rack 51 is disposed on the lifting frame 20 and extends along a first direction X. The gear 52 is rotatably disposed at one end of the moving beam 30 and meshes with the rack 51. The second driver 53 is disposed on the moving beam 30 and connected to the gear 52 to drive the gear 52 to rotate.

[0101] The two ends of the movable beam 30 are slidably connected to the lifting frame 20. This slidable connection ensures that the movable beam 30 moves smoothly in a straight line on the lifting frame 20. For example, sliders can be set at both ends of the movable beam 30, and guide rails are installed at corresponding positions on the lifting frame 20. The sliders and guide rails are tightly engaged, so that the movable beam 30 can only slide smoothly in the first direction X, without any offset or swaying in other directions.

[0102] The second driver 53 can be a power device such as a motor. When the second driver 53 is started, it outputs torque and transmits it to the gear 52, causing the gear 52 to rotate in a predetermined direction and speed. This enables precise control of the position of the moving beam 30 in the first direction X, so that the first image acquisition device 41 installed on the moving beam 30 can accurately align with different areas of the display screen 90 in the first direction X, thus meeting the detection requirements of display screens 90 of different lengths.

[0103] Reference Figure 8 The display screen detection device also includes lifting drive components 60 located on both sides of the lifting frame 20. The lifting drive components 60 include a lifting platform 61, a lifting nut, a first lead screw 62, and a third driver 63.

[0104] The lifting platform 61 is slidably mounted on the frame 10 along the height direction. A lifting nut is mounted on the lifting platform 61. A first lead screw 62 is mounted on the frame 10 along the height direction, and the lifting nut is fitted onto the first lead screw 62. A third driver 63 is used to drive the first lead screw 62 to rotate. The two ends of the lifting frame 20 are respectively connected to the two lifting platforms 61.

[0105] The lifting platform 61 can be mounted on the frame 10 via guide rails and sliders to slide along the height direction. The third drive 63 can be a motor or other power device. When the third drive 63 is activated, it drives the first lead screw 62 to rotate, causing the lifting nut to rise and fall on the first lead screw 62, thereby driving the lifting platform 61 connected to the lifting nut to rise and fall together. The two ends of the lifting frame 20 are connected to the two lifting platforms 61 respectively, so that when the lifting platform 61 moves up or down under the action of the lifting drive assembly 60, the lifting frame 20 will also move synchronously. By precisely controlling the rotation direction, speed and angle of the first lead screw 62 through the third drive 63, the height position of the lifting frame 20 can be precisely adjusted. This design allows the display screen testing equipment to adapt to the testing needs of display screens 90 of different height specifications, ensuring that the front-view testing device 40 and the display screen 90 maintain a suitable distance, thereby obtaining clear and accurate image information and ensuring effective testing and evaluation of various performance indicators of the display screen 90.

[0106] Reference Figure 1 and Figure 9The display screen detection equipment also includes a side-image detection device 70, which includes multiple second image acquisition units 71 located around the detection area 11. The second image acquisition units 71 are tilted towards the display screen 90, and the image acquisition area 411 of each second image acquisition unit 71 is aligned with a portion of the display screen 90. The image acquisition areas 411 of adjacent second image acquisition units 71 partially overlap, and the entire image acquisition area 411 of the side-image detection device 70 completely covers the display screen 90.

[0107] These data acquisition devices are distributed at regular intervals on the surrounding frame of the detection area 11 of the rack 10. Their positions ensure that they are tilted towards the display screen 90 from the side to acquire image information from the side view of the display screen 90.

[0108] Each second image acquisition unit 71 has an image acquisition area 411 aligned with a portion of the display screen 90, and the image acquisition areas 411 of adjacent second image acquisition units 71 partially overlap. This means they cooperate with each other, like stitching together... Figure 1 Generally, even from a tilted side angle, the entire image acquisition area 411 of the side-view detection device 70 can completely cover the entire display screen 90.

[0109] By capturing images of the display screen 90 from different side angles, problems that cannot be detected by direct viewing from above can be identified, and defects visible from oblique views can be checked. For example, when testing the viewing angle characteristics of the display screen 90, images captured from the side can be analyzed to reveal changes in brightness and color shifts when viewing the display screen 90 from the side. Furthermore, the image information acquired by the side-viewing detection device 70 provides strong evidence for examining the edge display effects of the display screen 90, such as the presence of light leakage. This helps to more comprehensively and accurately assess the overall quality and performance of the display screen 90, complementing the direct-viewing detection device 40 and jointly improving the testing process for the display screen 90.

[0110] Reference Figure 1 and Figure 9 The side-view detection device 70 also includes an angle adjuster 72 that corresponds one-to-one with the second image acquisition device 71. The angle adjuster 72 is located on the frame 10 and connected to the second image acquisition device 71. The angle adjuster 72 is used to adjust the tilt angle of the second image acquisition device 71.

[0111] Each second image acquisition unit 71 has a dedicated angle adjuster 72 that can flexibly adjust the tilt angle of the second image acquisition unit 71 according to different inspection requirements and the type of display screen 90. For example, when inspecting a display screen 90 with a special curved shape or a bezel of different thicknesses, adjusting the angle allows the second image acquisition unit 71 to obtain a more ideal image, ensuring accurate capture of information from various areas on the side of the display screen 90. This avoids problems such as incomplete detection of some areas or image distortion caused by a fixed angle, further improving the accuracy and comprehensiveness of side-view inspection, and better cooperating with the entire display screen inspection equipment to conduct a comprehensive evaluation of the quality of the display screen 90. Specifically, the angle between the shooting direction of the second image acquisition unit 71 and the display screen 90 can be adjusted to 30°, 45°, 60°, etc.

[0112] Reference Figure 1 and Figure 9 The angle adjuster 72 includes a fixed base 721, an adjusting base 722, and a locking element 723.

[0113] A mounting base 721 is disposed on the frame 10, and the mounting base 721 has a concave arc surface. The mounting base 721 is the basic component for mounting the angle adjuster 72 on the frame 10, and its function is to provide a stable support point for the entire angle adjustment function. The mounting base 721 is firmly set on the frame 10, for example by reliable fixing methods such as welding or bolt connection, to ensure that there will be no loosening or displacement during use. It has a concave arc surface, which is usually precision machined, with a smooth surface and precise curvature. Its shape and size are adapted to the convex arc surface 7221 of the adjusting base 722 to be used later, providing a good contact basis for the contact rotation between the two, so that the adjusting base 722 can smoothly rotate to adjust the angle above it.

[0114] The adjusting base 722 has a convex arc surface 7221 that matches the concave arc surface. The convex arc surface 7221 rotates in contact with the concave arc surface, and the second image acquisition device 71 is mounted on the adjusting base 722. As a key component supporting the second image acquisition device 71, the adjusting base 722 has a convex arc surface 7221 that matches the concave arc surface of the fixed base 721. This convex arc surface 7221 is also finely polished to ensure close contact with the concave arc surface, reducing friction and wobbling during rotation and achieving smooth relative rotation. The second image acquisition device 71 is mounted on the adjusting base 722. Common mounting methods include using screws to fix the acquisition device to a specific mounting surface of the adjusting base 722, or achieving a secure connection through slots, clips, or other structures. When it is necessary to adjust the tilt angle of the second image acquisition unit 71, the adjustment seat 722 is rotated, with the contact point between the convex arc surface 7221 and the concave arc surface as the axis of rotation. The adjustment seat 722 drives the second image acquisition unit 71 to change the angle around this axis, thereby achieving the purpose of adjusting the acquisition angle.

[0115] The locking element 723 is used to fix the adjusting seat 722 and the fixed seat 721. The locking element 723 plays a crucial role in the angle adjuster 72, primarily used to fix the relative position between the adjusting seat 722 and the fixed seat 721. After adjusting the tilt angle of the second image acquisition unit 71, the locking element 723 is used to lock the adjusting seat 722 and the fixed seat 721 to prevent them from rotating unexpectedly during the detection process due to external factors (such as slight vibrations of the equipment), thus ensuring that the angle of the second image acquisition unit 71 remains stable and that the acquired image angle is accurate and reliable. The locking element 723 can take various forms, such as a bolt-locking structure, where tightening the bolt causes the bolt head to abut against the corresponding part of the adjusting seat 722 or the fixed seat 721, using friction to limit the relative rotation between them; or it can be a snap-locking device, tightly fastening the adjusting seat 722 and the fixed seat 721 together to achieve a stable fixing effect.

[0116] Through the coordinated operation of the fixed base 721, the adjusting base 722, and the locking component 723, the angle adjuster 72 can conveniently and accurately adjust the tilt angle of the second image acquisition unit 71, and reliably fix the angle after adjustment, so as to meet the needs of acquiring side images at different angles during the display screen inspection process, and further improve the detection capability and detection accuracy of the entire inspection equipment.

[0117] Specifically, the angle adjuster 72 is an angular sliding stage.

[0118] Reference Figure 3 It also includes a third image acquisition unit 80, which is located on the lifting frame 20 and between the two moving beams 30. The image acquisition unit is used to detect Mura defects and color deviations on the display screen 90.

[0119] The third image acquisition unit 80 is mounted on the lifting frame 20 and positioned between two moving beams 30. A fixed beam is fixed in the middle of the lifting frame 20, parallel to the moving beams 30, and the third image acquisition unit 80 is mounted on the fixed beam. During the lifting process of the lifting frame 20, the third image acquisition unit 80 can maintain a suitable distance from the display screen 90 at different height levels to acquire clear and comprehensive image information.

[0120] The primary function of the third image acquisition unit 80 is to detect Mura defects and color shifts on the display screen 90. Mura defects typically manifest as areas of uneven brightness on the display screen 90, which may appear as patches, stripes, etc., affecting the visual effect of the display screen 90. With its high resolution and accurate color perception capabilities, the third image acquisition unit 80 can capture extremely subtle brightness differences on the display screen 90, thereby accurately identifying the location, shape, and severity of Mura defects.

[0121] In terms of color cast detection, it can accurately analyze the various colors displayed on the screen 90. By collecting color data from different areas of the screen 90 and comparing it with a standard color model, it can determine whether the screen 90 exhibits color cast. For example, for a test image containing multiple colors, the third image acquisition unit 80 can detect whether red is too biased towards orange, or whether blue is biased towards purple, providing an important basis for evaluating the color accuracy of the screen 90.

[0122] The third image acquisition unit 80 works in conjunction with other components in the equipment to comprehensively inspect the display screen 90. It complements the image information acquired by the first image acquisition unit 41 on the moving beam 30 and the second image acquisition unit 71 around the inspection area 11. For example, the first image acquisition unit 41 focuses on the pixel status and overall layout of the display screen 90 from directly above, the second image acquisition unit 71 acquires images of the edges and viewing angles of the display screen 90 from the side, while the third image acquisition unit 80 focuses on Mura defects and color shift detection. Integrating this multi-faceted inspection data allows for the construction of a more complete and detailed quality assessment system for the display screen 90, thereby improving the accuracy and reliability of the entire display screen inspection equipment.

[0123] Specifically, the third image acquisition unit 80 uses a color camera.

[0124] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A display screen testing device, characterized in that, include: The rack has a testing area, in which the display screen to be tested can be placed; A lifting frame is vertically mounted on the frame and located above the detection area; Two movable beams are movably disposed on the lifting frame along a first direction, the first direction forming an angle with the height direction, and the length direction of the movable beams forming an angle with the first direction and the height direction respectively. Each of the movable beams is spaced apart along the first direction. The frontal detection device includes multiple first image acquisition devices, with each moving beam equipped with two first image acquisition devices, and the first image acquisition devices can be translated along the length direction of the moving beam. By adjusting the spacing of the moving beams and the spacing between the two first image acquisition units located on the same moving beam, the entire image acquisition area of ​​the frontal detection device can completely cover the display screen.

2. The display screen testing equipment according to claim 1, characterized in that, The display screen has a first center line and a second center line, which divide the display screen into four test areas. The first center line is parallel to the first direction, and the second center line is perpendicular to the first center line. Two movable beams are symmetrically arranged on both sides of the second center line, and two first image acquisition devices on the movable beams are symmetrically arranged on both sides of the first center line. The image acquisition area of ​​each first image acquisition device covers one of the areas to be tested.

3. The display screen testing equipment according to claim 2, characterized in that, The frontal vision detection device further includes a first driving component corresponding to the first image acquisition unit, the first driving component including: A first slide rail is provided on the movable beam and extends along the length direction of the movable beam; A first slider is slidably disposed on the first slide rail, and the first image acquisition device is connected to the first slider; A first driver is used to drive the first slider to move; The two first drive components on the same moving beam are located on both sides of the first centerline.

4. The display screen testing equipment according to claim 1, characterized in that, The frontal vision detection device further includes a movable frame and a multi-dimensional adjustment mechanism. The movable frame is movably mounted on the movable beam, and the multi-dimensional adjustment mechanism includes: A lifting component is vertically mounted on the movable frame, and the lifting component includes a first rotating shaft arranged in a horizontal direction; The first rotating component includes a protruding first connecting lug and a second rotating shaft arranged in a horizontal direction. The first connecting lug is rotatably connected to the first rotating shaft, and the second rotating shaft is perpendicular to the first rotating shaft. A first adjusting rod passes through the lifting member and one end abuts against the first rotating member. The length of the first adjusting rod passing through the lifting member is adjustable. The second rotating component includes a protruding second connecting lug and a third rotating shaft arranged in a vertical direction, wherein the second connecting lug is rotatably connected to the second rotating shaft; The second adjusting rod passes through the second rotating member and one end abuts against the first rotating member. The length of the second adjusting rod passing through the second rotating member is adjustable. The third rotating component includes a protruding third connecting ear, which is rotatably connected to the third rotating shaft, and the first image acquisition device is disposed on the third rotating component; The third adjusting rod passes through the second rotating member and one end abuts against the third rotating member. The length of the third adjusting rod passing through the second rotating member is adjustable.

5. The display screen testing equipment according to claim 1, characterized in that, The two ends of the movable beam are slidably connected to the lifting frame, and the display screen detection device further includes a second driving component, which includes: A rack is disposed on the lifting frame and extends along the first direction; A gear is rotatably disposed at one end of the movable beam and meshes with the rack; A second drive is located on the moving beam and connected to the gear to drive the gear to rotate.

6. The display screen testing equipment according to claim 1, characterized in that, The display screen detection device further includes lifting drive components located on both sides of the lifting frame, the lifting drive components including: A lifting platform is slidably mounted on the frame along the height direction; A lifting nut is provided on the lifting platform; A first lead screw is provided on the frame along the height direction, and a lifting nut is fitted onto the first lead screw; The third driver is used to drive the first lead screw to rotate; The lifting frame is connected to two lifting platforms at both ends.

7. The display screen testing device according to any one of claims 1 to 6, characterized in that, The display screen detection device also includes a side-image detection device, which includes multiple second image acquisition units located around the detection area. The second image acquisition units are tilted towards the display screen, and the image acquisition areas of each second image acquisition unit are respectively aligned with a portion of the display screen. The image acquisition areas of adjacent second image acquisition units partially overlap, and the entire image acquisition area of ​​the side-image detection device completely covers the display screen.

8. The display screen testing equipment according to claim 7, characterized in that, The side-image detection device also includes an angle adjuster corresponding to the second image acquisition unit. The angle adjuster is located on the frame and connected to the second image acquisition unit. The angle adjuster is used to adjust the tilt angle of the second image acquisition unit.

9. The display screen testing equipment according to claim 8, characterized in that, The angle adjuster includes: A mounting base is provided on the frame, and the mounting base has a concave arc surface; An adjustment base is provided with a convex arc surface that matches the concave arc surface. The convex arc surface rotates in contact with the concave arc surface. The second image acquisition device is located on the adjustment base. A locking element is used to secure the adjusting seat and the fixed seat.

10. The display screen testing device according to any one of claims 1 to 6, characterized in that, It also includes a third image acquisition unit, which is located in the lifting frame and between the two moving beams. The image acquisition unit is used to detect Mura defects and color deviations on the display screen.

Images