Display screen test tool and display screen test method

Abstract

The invention relates to the technical field of display screen testing, in particular to a display screen testing tool and a display screen testing method.The display screen testing tool comprises a base, a support, a mechanical gripper, a power assembly, a testing assembly, a screening assembly and a control assembly, the support and the mechanical gripper are fixedly installed on the base, and the mechanical gripper is located at the right end of the support; the power assembly is installed at the upper end of the support in a sliding mode, the testing assembly is arranged on the power assembly, the screening assembly is fixedly installed on the base and located above the testing assembly, and the mechanical gripper, the power assembly, the testing assembly and the screening assembly are all controlled by the control assembly. And the problem of inaccurate test caused by poor sealing performance of a built camera obscura test environment is also solved, so that the whole operation is more convenient, and the test efficiency of the display screen is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of display screen testing technology, specifically to a display screen testing fixture and a display screen testing method. Background Technology

[0002] With the development of science and technology, the application fields of display screens are constantly expanding, and the demand for display screens in all walks of life is increasing. In particular, a series of products such as mobile phones, computers, televisions and billboards have a huge demand for display screens. All display screens need to be tested before use. The most widely used testing method is to put the display screen in a dark box environment to test its display effect. However, this process requires staff to manually put the display screen into the dark box for observation and to manually select and take it out, which is inefficient.

[0003] There are many existing technical solutions for display screen testing. For example, Shenzhen Shengjunan Technology Co., Ltd. invented a display screen testing fixture and a display screen testing method (application number: CN202010338440.3, publication date: 2022-03-01). The display screen testing fixture includes a support platform with a support cavity inside. The support cavity consists of two symmetrically arranged adjustment cavities, a first adjustment cavity and a second adjustment cavity, with an adjustment gap between them. A sliding plate is connected to the side of the first adjustment cavity, and a sliding cavity is provided on the side of the second adjustment cavity. A support plate is provided at the bottom of the support platform, and a receiving plate is connected to the center of the top surface of the support plate via a first pneumatic push rod. The support cavity in this invention not only allows for convenient and quick effective positioning and stable testing of the display screen installed inside, but also allows the movable support cavity to be adjusted according to different display screen specifications, thus greatly improving the applicability of the display screen testing fixture in use.

[0004] However, in this design, the dark box testing environment is achieved by covering it with a cover plate, which results in insufficient sealing and inaccurate test results for the display screen. Furthermore, the process of screening qualified and unqualified display screens after testing is complicated and inefficient.

[0005] In view of this, in order to overcome the above-mentioned technical problems, the present invention designs a display screen testing fixture and a display screen testing method, thereby solving the above-mentioned technical problems. Summary of the Invention

[0006] The technical problem to be solved by this invention is to solve the problem of low screening efficiency of display screens after dark box testing and the problem of inaccurate testing caused by insufficient sealing of the dark box testing environment.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] This invention provides a display screen testing fixture comprising a base, a support, a mechanical gripper, a power component, a testing component, a screening component, and a control component. The support and mechanical gripper are welded and mounted on the base. The base is L-shaped for better stability and is made of robust stainless steel. An L-shaped slide rail is provided at the upper end of the support. The mechanical gripper is located at the right end of the support and is used to retrieve the tested display screen. The power component is slidably mounted on the L-shaped slide rail at the upper end of the support and is used to transport the display screen. The testing component is mounted on the power component and is used to test the display screen. The screening component is welded and mounted on the base and located above the testing component. The screening component is used to reject unqualified display screens. The mechanical gripper, power component, testing component, and screening component are controlled by and electrically connected to the control component.

[0009] Preferably, the power assembly includes a dark box, a support column, a support plate, a motor, and a power gear. One end of the dark box is slidably mounted on an L-shaped slide rail on the upper end of the bracket, and the other end of the dark box is provided with a rack. The bottom of the support column is welded to the base, and a support plate and a motor are fixedly welded to the top of the support column. The power gear is fixedly mounted on the motor and is flush with and meshes with the rack end of the dark box. The motor is electrically connected to the control assembly. The control assembly controls the motor to drive the power gear to rotate, thereby driving the dark box to slide within the L-shaped slide rail on the upper end of the bracket, thus realizing the transmission of the test component. At the same time, the rotation of the power gear is reciprocating, thus driving the dark box to slide back and forth, thereby effectively preventing entanglement of the electrical connection lines with the control assembly.

[0010] Preferably, the testing assembly includes a test box, an electric telescopic rod, a power board, a limiting block, and a camera. Multiple test boxes are provided on the dark chamber. An observation hole is provided in the center of each test box. The electric telescopic rod is welded to one end of each test box. The power board is welded to the top of the electric telescopic rod and has a socket welded to it. The limiting blocks are welded to both ends inside each test box. A circular hole is provided in the center of the support, and the camera is welded to it. The screen of the display is placed inside the test box and electrically connected to the display using the socket on the power board and the pins on the display. With this design, after the screen is placed in the test box, it is restricted by the limiting block, forming a dark chamber cavity between the display and the test box. Simultaneously, using the power transmission of the power assembly, when the test box is transported to the center position on the support, the observation hole and the camera are aligned coaxially. The display effect of the display is then observed using the camera and the observation hole. Furthermore, this method creates a dark chamber testing environment with better sealing and observation results.

[0011] Preferably, a sponge pad is glued to the limiting block. Since the screen of the display is relatively fragile, this design can protect the screen when it is placed in the test box. At the same time, the placement of the sponge pad can also improve the sealing of the dark chamber test environment to a certain extent, thereby improving the accuracy of the display test.

[0012] Preferably, the test box has a fixing plate mounted on both ends via a rotating shaft. The fixing plate fixes the display screen, thereby improving the stability of the display screen test. At the same time, when the power is turned off, the fixing plate restricts the display screen. When the power is off, the upward movement of the electric telescopic rod will cause the power board to move upward. When the power is on, the pins on the display screen are inserted into the sockets on the power board. Therefore, the upward movement of the power board will cause the display screen to move upward at the same time. Under the restriction of the fixing plate, the display screen is de-energized without moving.

[0013] Preferably, the limiting block is provided with a pushing cylinder. When the display screen fails the test, the control component controls the pushing cylinder to push the display screen up. At the same time, when the test is completed, the qualified display screen is pushed up by the pushing cylinder, which makes it easier to retrieve the display screen.

[0014] Preferably, the limiting block is provided with an inflatable airbag. Because the screen of the display is relatively fragile, and the inflatable airbag is relatively soft, it will not damage the display. With this design, when the display fails the test, the control component controls the inflatable airbag to inflate and support the display. At the same time, when the test is completed, the qualified display uses the inflatable airbag to support it, making it easier to retrieve the display.

[0015] Preferably, the screening component includes a pneumatic push rod, a slide ramp, and a recycling bin. The pneumatic push rod is welded to the base via a support column and is positioned on the upper end of the testing component. When a display screen in the testing component fails, the pneumatic push rod is controlled by the control component to push the failed display screen away. The slide ramp is fixedly installed at the middle of the rear end of the support, and the recycling bin is fixedly installed on the slide ramp. The failed display screens pushed away by the pneumatic push rod will slide down the slide ramp into the recycling bin for unified storage, thereby realizing the screening of display screens and greatly improving testing efficiency.

[0016] Preferably, a rubber pad is glued to the foremost gripper of the mechanical gripper. With this design, after the display screen is tested, the mechanical gripper can retrieve the display screen. At the same time, because the rubber pad is glued to the gripper, the display screen will not be damaged during the gripping process, thus achieving better protection for the display screen.

[0017] A method for testing a display screen, applicable to the aforementioned display screen testing fixture, comprises the following steps:

[0018] S1: The screen of the display is placed inside the test box. The control component controls the electric telescopic rod to move the power board to power the display and simultaneously controls the fixing plate to rotate and fix the display. The fixing plate greatly improves the stability of the display test. The bracket and the limiting block form a dark box test environment. The dark box test environment formed by this design has better sealing and is more convenient to operate. Then, the power component transports the test box to the area below the camera for observation and testing.

[0019] S2: The control component compares the image transmitted by the camera with the pre-stored qualified image. If the comparison results are consistent, the display screen is qualified; if they are inconsistent, the display screen is unqualified. For unqualified display screens, the control component controls the electric telescopic rod to rise, thereby disconnecting the power supply to the display screen and the power board. Then, it controls the fixing plate to rotate to release the fixing of the display screen. At the same time, it controls the push cylinder to push the display screen up or the inflatable airbag to support the display screen. Then, the pneumatic push rod pushes the unqualified display screen into the recycling box along the slope. With this design, the staff does not need to manually remove the unqualified display screens one by one, which greatly improves the testing efficiency of the display screen.

[0020] S3: The control component compares the image transmitted by the camera with the pre-stored qualified image. If the qualified display screen is consistent, it continues to be transported by the power component and finally retrieved by the mechanical gripper. At the same time, because the gripper is glued with a rubber pad, the display screen will not be damaged during the gripping process, thus greatly improving the protection effect of the display screen.

[0021] The beneficial effects of this invention are as follows:

[0022] 1. The present invention provides a display screen testing fixture and a display screen testing method, which uses a control component to control a push cylinder or an inflatable airbag to lift the display screen, and then uses a pneumatic push rod to push the unqualified display screen into a recovery box along a slide, thereby achieving the screening of display screens. At the same time, a mechanical gripper automatically retrieves the display screens after the test is completed, which provides better protection for the display screens and greatly improves the efficiency of display screen testing.

[0023] 2. The present invention provides a display screen testing fixture and a display screen testing method. The display screen is tested in a dark box environment by using the limiting block inside the test box to restrict the screen surface of the display screen and the shielding effect of the bracket. The display screen is observed by a camera fixedly installed in the middle of the bracket and an observation hole opened in the middle of the test box. The whole operation is more convenient and has better sealing, which greatly improves the testing accuracy of the display screen. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a side view of the present invention;

[0027] Figure 3 This is a cross-sectional view of the overall structure of the present invention;

[0028] Figure 4 This is a schematic diagram of the test components of the present invention;

[0029] Figure 5 This is a test diagram of the display screen in Embodiment 1 of the present invention;

[0030] Figure 6 This is a diagram showing the push-up of the display screen in Embodiment 1 of the present invention;

[0031] Figure 7 This is a test diagram of the display screen in Embodiment 2 of the present invention;

[0032] Figure 8 This is a diagram showing the push-up of the display screen in Embodiment 2 of the present invention;

[0033] Figure 9 This is a top view of the overall structure of the present invention;

[0034] Figure 10 This is a schematic diagram of the mechanical gripper of the present invention;

[0035] Figure 11 This is a flowchart of the testing method of the present invention.

[0036] In the diagram: Base 1, Bracket 2, Mechanical Gripper 3, Rubber Pad 31, Power Component 4, Dark Box 41, Support Column 42, Support Plate 43, Motor 44, Power Gear 45, Test Component 5, Test Box 51, Fixing Plate 511, Observation Hole 512, Electric Telescopic Rod 52, Power Board 53, Limit Block 54, Sponge Pad 541, Push Cylinder 542, Inflatable Airbag 543, Camera 55, Screening Component 6, Pneumatic Push Rod 61, Slide 62, Recycling Bin 63. Detailed Implementation

[0037] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0038] Example 1: As Figure 1 As shown, a display screen testing fixture includes a base 1, a support 2, a mechanical gripper 3, a power unit 4, a testing component 5, a screening component 6, and a control component. The support 2 and the mechanical gripper 3 are fixedly installed on the base 1. The base 1 is L-shaped for better stability and is made of sturdy stainless steel. The upper end of the support 2 is provided with an L-shaped slide. The mechanical gripper 3 is located at the right end of the support 2 and is used to retrieve the tested display screen. The power unit 4 is slidably installed on the L-shaped slide on the upper end of the support 2 and is used to transport the display screen. The testing component 5 is installed on the power unit 4 and is used to test the display screen. The screening component 6 is fixedly installed on the base 1 and located above the testing component 5. The screening component 6 is used to reject unqualified display screens. The mechanical gripper 3, the power unit 4, the testing component 5, and the screening component 6 are controlled by the control component and electrically connected to the control component.

[0039] When testing the display screen, the staff puts the display screen into the test component 5 and it is transported to the middle position by the power component 4 for testing. When the display screen is found to be unqualified, the control component controls the screening component 6 to remove the unqualified display screen, while the qualified display screen continues to be transported by the power component 4 and finally retrieved by the mechanical gripper 3.

[0040] like Figure 2As shown, the power assembly 4 includes a dark box 41, a support column 42, a support plate 43, a motor 44, and a power gear 45. One end of the dark box 41 is slidably mounted on the L-shaped slide rail at the upper end of the bracket 2, and the other end of the dark box 41 is provided with a rack. The bottom of the support column 42 is fixedly mounted on the base 1, and the support plate 43 and the motor 44 are fixedly mounted on the upper part of the support column 42. The power gear 45 is fixedly mounted on the motor 44 and is flush with and meshes with the rack end of the dark box 41. The motor 44 is electrically connected to the control assembly. The control assembly controls the motor 44 to drive the power gear 45 to rotate, thereby driving the dark box 41 to slide in the L-shaped slide rail at the upper end of the bracket 2, thus realizing the transmission of the test assembly 5. At the same time, the rotation of the power gear 45 is reciprocating, thus driving the dark box 41 to slide back and forth, thereby effectively preventing the electrical connection lines with the control assembly from getting tangled.

[0041] like Figures 3 to 4 As shown, the testing assembly includes a test box 51, an electric telescopic rod 52, a power board 53, a limiting block 54, and a camera 55. Multiple test boxes 51 are provided on the dark box 41. An observation hole 512 is provided in the middle of each test box 51. The electric telescopic rod 52 is fixedly installed at one end of each test box 51. The power board 53 is fixedly installed on the top of the electric telescopic rod 52, and a socket is fixedly installed on the power board 53. The limiting blocks 54 are fixedly installed at both ends inside the test box 51. A round hole is provided in the middle of the bracket 2, and the camera 55 is fixedly installed thereon. The screen of the display is placed on the test box 51. The test box 51 is electrically connected to the display screen via a socket on the power board 53 and a pin on the display screen. With this design, after the screen of the display screen is placed in the test box 51, it is restricted by the limiting block 54, and a dark box cavity is formed between the display screen and the test box 51. At the same time, the power of the power component 4 is used to transmit power. When the test box 51 is transmitted to the middle position on the bracket 2, the observation hole 512 is aligned with the camera 55 on the same axis. Then, the display effect of the display screen can be observed using the camera 55 and the observation hole 512. At the same time, the dark box test environment formed by this method has better sealing and better observation effect.

[0042] like Figures 3 to 4 As shown, a sponge pad 541 is fixedly installed on the limiting block 54. Since the screen of the display is relatively fragile, this design can protect the screen of the display when it is placed in the test box 51. At the same time, the placement of the sponge pad 541 can also improve the sealing of the dark box test environment to a certain extent, thereby improving the accuracy of the display test.

[0043] like Figures 2 to 3As shown, fixing plates 511 are rotatably mounted on both ends of the test box via rotating shafts. The fixing plates 511 fix the display screen, thereby improving the stability of the display screen test. At the same time, when the power is turned off, the fixing plates 511 restrict the display screen. When the power is off, the electric telescopic rod 52 moves upward, which drives the power board 53 to move upward. When the power is on, the pins on the display screen are inserted into the sockets on the power board 53. Therefore, the upward movement of the power board 53 will drive the display screen to move upward at the same time. Under the restriction of the fixing plates 511, the display screen is de-energized without moving.

[0044] When the staff places the screen of the display screen into the test box 51, the control component rotates the fixing plate 511 to fix the display screen, and at the same time controls the electric telescopic rod 52 to move the power board 53 to power the display screen. Then, the power component 4 transports the test box 51 to the middle position for observation. When the image transmitted by the control component through the camera 55 is inconsistent with the pre-stored qualified image, the electric telescopic rod 52 will move upward to drive the power board 53 to move upward to cut off the power to the display screen. After the power is cut off, the control component controls the fixing plate 511 to rotate and release the fixation of the display screen.

[0045] like Figures 5 to 6 As shown, a push cylinder 542 is provided inside the limiting block 54. When the display screen fails the test, the control component controls the push cylinder 542 to push the display screen up. At the same time, when the test is completed, the qualified display screen is also pushed up by the push cylinder 542, which makes it easier to retrieve the display screen.

[0046] When the test box 51 is transported to the middle position for observation, if the image transmitted by the control component through the camera 55 is inconsistent with the pre-stored qualified image, the electric telescopic rod 52 will move upward, causing the power board 53 to move upward to cut off the power to the display screen. After the power is cut off, the control component controls the fixing plate 511 to rotate to release the fixing of the display screen, and at the same time controls the pushing cylinder 542 to push the display screen up, and then rejects it through the screening component 6. In addition, after the display screen test is completed, the pushing cylinder 542 is also controlled to push the display screen up, and then the mechanical gripper 3 is controlled to retrieve the display screen, thereby improving the efficiency of the entire display screen testing process.

[0047] like Figure 9As shown, the screening component 6 includes a pneumatic push rod 61, a ramp 62, and a recycling bin 63. The pneumatic push rod 61 is fixedly connected to the base 1 via a support column and is located on the upper end of the test component 5. When the display screen in the test component 5 is unqualified, the pneumatic push rod 61 is controlled by the control component to push the unqualified display screen away. The ramp 62 is fixedly installed at the middle of the rear end of the bracket 2, and the recycling bin 63 is fixedly installed on the ramp 62. The unqualified display screen pushed away by the pneumatic push rod 61 slides along the ramp 62 into the recycling bin 63 for unified storage, thereby realizing the screening of display screens and improving testing efficiency.

[0048] When the test component 5 is transmitted to the middle position of the bracket 2 under the power of the power component 4, the staff uses the camera 55 and the observation hole 512 to observe the dark box test process of the display screen. When the display screen is found to have color defects or other unqualified conditions, the staff uses the control component to control the pneumatic push rod 61 to push the unqualified display screen away. The unqualified display screen will slide into the recycling box 63 along the slide 62. With this design, the staff does not need to manually screen the unqualified display screens one by one, which greatly improves the testing efficiency of the display screen.

[0049] like Figure 10 As shown, a rubber pad 31 is glued to the foremost gripper of the mechanical gripper 3. With this design, after the display screen is tested, the display screen can be retrieved by the mechanical gripper. At the same time, because the rubber pad is glued to the gripper, the display screen will not be damaged during the gripping process, thus achieving better protection for the display screen.

[0050] Example 2: The difference between this example and Example 1 is that the display screen is raised by inflatable airbags 523 within the limiting block 52. The specific solution is as follows:

[0051] Based on the above embodiment 1, as follows Figures 7 to 8 As shown, an inflatable airbag 543 is provided inside the limiting block 54. Because the screen of the display is relatively fragile, and the inflatable airbag 543 is relatively soft, it will not damage the display. With this design, when the display fails the test, the control component controls the inflatable airbag 543 to inflate and support the display. At the same time, when the test is completed, the qualified display also uses the inflatable airbag 543 to support it, making it easier to retrieve the display.

[0052] During operation, when the test box 51 is transported to the middle position for observation, if the image transmitted by the control component through the camera 55 is inconsistent with the pre-stored qualified image, the electric telescopic rod 52 will move upward, causing the power board 53 to move upward to cut off the power to the display screen. After the power is cut off, the control component controls the fixing plate 511 to rotate to release the fixing of the display screen, and at the same time controls the inflatable airbag 543 to support the display screen, and then rejects it through the screening component 6. In addition, after the display screen test is completed, the inflatable airbag 543 is controlled to support the display screen, and then the mechanical gripper 3 is controlled to retrieve the display screen, thereby improving the efficiency of the entire display screen testing process.

[0053] like Figure 11 As shown, a testing method for a display screen is applicable to the aforementioned display screen testing fixture. The specific steps are as follows:

[0054] S1: The screen of the display is placed inside the test box 51. The control component controls the electric telescopic rod 52 to move the power board 52 to power the display and simultaneously controls the fixing plate 511 to rotate and fix the display. The fixing effect of the fixing plate 511 greatly improves the stability of the display test. The shielding effect of the bracket 2 and the limiting effect of the limiting block 54 form a dark box test environment. The dark box test environment formed by this design has better sealing and is more convenient to operate. Then the power component 4 transports the test box 51 to the area below the camera 55 for observation and testing.

[0055] S2: The control component compares the image transmitted by the camera 55 with the pre-stored qualified image. If the comparison results are consistent, the display screen is qualified; if they are inconsistent, the display screen is unqualified. For unqualified display screens, the control component controls the electric telescopic rod 52 to rise, thereby disconnecting the power supply between the display screen and the power board 53. Then, the control component controls the fixing plate 511 to rotate and release the fixing of the display screen. At the same time, the control component controls the push cylinder 542 to push the display screen up or the inflatable airbag 543 to support the display screen. Then, the pneumatic push rod 61 pushes the unqualified display screen along the slide 62 into the recycling box 63. With this design, the staff does not need to manually remove the unqualified display screens one by one, which greatly improves the testing efficiency of the display screen.

[0056] S3: The display screen, whose image transmitted by the control component through the camera 55 is consistent with the pre-stored qualified image, continues to be transmitted through the power component 4 and is finally retrieved by the mechanical gripper 3. At the same time, because the gripper is glued with a rubber pad 31, the display screen will not be damaged during the gripping process, thus greatly improving the protection effect of the display screen.

[0057] During operation, the operator manually places the display screen into the test box 51. Then, the control component controls the fixing plate 511 to secure the display screen and controls the electric telescopic rod 52 to move downwards, causing the power board 53 to power the display screen. Simultaneously, the motor 44 rotates, driving the dark box 41 to transport the test box 51 to the middle position of the bracket 2. The display screen is observed through a camera 55 installed in the middle of the bracket 2 and an observation hole 512 in the middle of the test box 51. When the image transmitted by the control component through the camera 55 is inconsistent with a pre-stored qualified image, the electric telescopic rod 52 moves upwards, causing the power board 53 to move upwards, thus cutting off the power to the display screen. After the power is applied, the control component controls the fixed plate 511 to rotate and release the fixation of the display screen. Then, it controls the push cylinder 542 or the inflatable airbag 543 to push the display screen up. Subsequently, it controls the pneumatic push rod 61 to push the unqualified display screen down the slide 62 into the recycling box 63. For qualified display screens, the power component 4 continues to transport them. The control component controls the electric telescopic rod 52 to cut off the power to the display screen and then controls the fixed block 511 to rotate and release the fixation. At the same time, it controls the push cylinder 542 or the inflatable airbag 543 to push the display screen up. Finally, it controls the mechanical gripper 3 to retrieve the pushed-up display screen, thereby greatly improving the efficiency of display screen testing.

[0058] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A display screen testing fixture, characterized in that: The system includes a base (1), a support (2), a mechanical gripper (3), a power unit (4), a testing unit (5), a screening unit (6), and a control unit. The support (2) and the mechanical gripper (3) are fixedly installed on the base (1). The mechanical gripper (3) is located at the right end of the support (2) and is used to retrieve the tested display screen. The power unit (4) is slidably installed on the upper end of the support (2) and is used to transport the display screen. The testing unit (5) is installed on the power unit (4) and is used to test the display screen. The screening unit (6) is fixedly installed on the base (1) and located above the testing unit (5). The screening unit (6) is used to remove unqualified display screens. The mechanical gripper (3), the power unit (4), the testing unit (5), and the screening unit (6) are controlled by the control unit.

2. The display screen testing fixture according to claim 1, characterized in that: The power assembly (4) includes a dark box (41), a support column (42), a support plate (43), a motor (44), and a power gear (45). One end of the dark box (41) is slidably mounted on the upper L-shaped slide of the bracket (2), and the other end of the dark box (41) is provided with a rack. The bottom of the support column (42) is fixedly mounted on the base (1), and the support plate (43) and the motor (44) are fixedly mounted on the upper part of the support column (42). The power gear (45) is fixedly mounted on the motor (44) and is flush with and meshes with the rack end of the dark box (41). The motor (44) is electrically connected to the control assembly.

3. The display screen testing fixture according to claim 2, characterized in that: The test assembly (5) includes a test box (51), an electric telescopic rod (52), a power board (53), a limiting block (54), and a camera (55). Multiple test boxes (51) are provided on the dark box (41). An observation hole (512) is provided in the middle of each test box (51). The electric telescopic rod (52) is fixedly installed at one end of each test box (51). The power board (53) is fixedly installed on the top of the electric telescopic rod (52). A socket is fixedly installed on the power board (53). The limiting blocks (54) are fixedly installed at both ends inside the test box (51). A round hole is provided in the middle of the bracket (2), and the camera (55) is fixedly installed thereon. The screen of the display is placed inside the test box (51) and is electrically connected to the pins on the display using the socket on the power board (53).

4. The display screen testing fixture according to claim 3, characterized in that: A sponge pad (541) is fixedly installed on the limiting block (54).

5. A display screen testing fixture according to claim 4, characterized in that: The test box (51) has fixed plates (511) mounted on both ends of its outer side via rotating shafts.

6. The display screen testing fixture according to claim 5, characterized in that: The limiting block (54) is equipped with a pushing cylinder (542).

7. A display screen testing fixture according to claim 5, characterized in that: An inflatable airbag (543) is provided inside the limiting block (54).

8. A display screen testing fixture according to claim 6 or 7, characterized in that: The screening component (6) includes a pneumatic push rod (61), a landslide (62), and a recycling bin (63). The pneumatic push rod (61) is fixedly connected to the base (1) via a support column and is set on the upper end of the test component (5). The landslide (62) is fixedly installed at the middle position of the rear end of the bracket (2), and the recycling bin (63) is fixedly installed on the landslide (62).

9. A display screen testing fixture according to claim 8, characterized in that: A rubber pad (31) is fixedly installed at the foremost gripper of the mechanical gripper (3).

10. A method for testing a display screen, the method being applicable to the display screen testing fixture described in any one of claims 1-9, characterized in that: S1: Place the screen of the display screen inside the test box (51), control the electric telescopic rod (52) to move the power board (53) to power the display screen, and control the fixing plate (511) to rotate to fix the display screen. The dark box test environment is formed by the shielding of the bracket (2) and the limitation of the limiting block (54). Then the power component (4) transmits the test box (51) to the camera (55) for observation and detection. S2: The control component compares the image transmitted by the camera (55) with the pre-stored qualified image. If the comparison results are consistent, the display screen is qualified. If they are inconsistent, the display screen is unqualified. For unqualified display screens, the control component controls the electric telescopic rod (52) to rise so that the display screen and the power board (53) are disconnected. Then, the fixed plate (511) is controlled to rotate to release the fixation of the display screen. At the same time, the push cylinder (542) is controlled to push the display screen up or the airbag (543) is inflated to support the display screen. Then, the unqualified display screen is pushed into the recycling box (63) along the slide (62) by the pneumatic push rod (61). S3: The control component compares the image transmitted by the camera (55) with the pre-stored qualified image. If the image is qualified, the display screen continues to transmit it through the power component (4) and is finally retrieved by the mechanical gripper (3).

Images