Display screen testing tool

Abstract

The utility model discloses a display screen testing tool, and belongs to the technical field of display screen production. According to the display screen testing tool, the first carrying platform, the first groove and the second groove are all located on the top surface of the base, so that the first sealing cavity, the first adsorption structure communicated with the first sealing cavity, the second sealing cavity and the second adsorption structure communicated with the second sealing cavity are all located on the top surface of the base; the distance between the first adsorption structure and the first sealing cavity and the distance between the second adsorption structure and the second sealing cavity are shortened, so that the purpose of improving the adsorption stability is achieved, and the safety of the display screen and the accuracy of a test result are improved; meanwhile, the notch of the second groove is sealed through the first carrying platform, so that a cover plate does not need to be arranged for the second groove, the structure of the display screen testing tool is simplified, and the display screen testing tool has the advantages of being good in manufacturability and low in cost.

Description

Technical Field

[0001] This utility model relates to the field of display screen manufacturing technology, and in particular to a display screen testing fixture. Background Technology

[0002] During the production process, displays need to be tested. Automated testing of displays involves multiple testing stations. Currently, a conveyor belt system is typically used to transport the displays through each testing station. When a display arrives at a testing station, a robotic arm removes it from the conveyor belt and places it onto a testing fixture inside the machine for testing.

[0003] However, this testing mode requires the display screen to be picked up and put down 10 to 16 times, which can easily lead to defects such as uneven color and broken pieces, increasing production costs and reducing production yield.

[0004] In existing technologies, some manufacturers use carriers to support the displays for transfer between various testing sites, and employ vacuum adsorption structures to attach the displays to the carriers. However, these carriers suffer from problems such as complex vacuum adsorption structures, poor manufacturability, high cost, and poor adsorption stability. Utility Model Content

[0005] The purpose of this utility model is to provide a display screen testing fixture, which has the advantages of good processability, low cost, and strong adsorption stability.

[0006] To achieve the above objectives, the following technical solution is provided:

[0007] Display screen testing fixtures include:

[0008] The base has a first groove and a second groove on its top surface, and a second hole communicating with the second groove on its bottom surface.

[0009] A first cover body, the first cover body being used to close the opening of the first groove and form a first sealing cavity, the first cover body being provided with a first hole communicating with the first sealing cavity;

[0010] A first platform is fixed to the top surface of the base, and the first platform is capable of closing the opening of the second groove and forming a second sealed cavity.

[0011] At least one first adsorption structure and at least one second adsorption structure, wherein at least one first adsorption structure is in communication with the first sealed cavity, and at least one second adsorption structure is in communication with the second sealed cavity.

[0012] Optionally, the first groove is a straight groove; and / or,

[0013] The second groove includes a first groove segment, a second groove segment, and a third groove segment connected in sequence. The angle between the center line of the first groove segment and the center line of the second groove segment is a first obtuse angle, and the angle between the center line of the second groove segment and the center line of the third groove segment is a second obtuse angle.

[0014] Optionally, it further includes at least one third adsorption structure, wherein the third adsorption structure is not in communication with the first sealing cavity and the second sealing cavity; wherein,

[0015] The third adsorption structure, the first adsorption structure, and the second adsorption structure are arranged in a triangular structure.

[0016] Optionally, the second adsorption structure is provided in two parts, with one third adsorption structure, one first adsorption structure, and two second adsorption structures arranged in a quadrilateral structure.

[0017] Optionally, both of the second adsorption structures are located on the same diagonal of the quadrilateral structure.

[0018] Optionally, the top surface of the first stage is provided with a boss, and the boss is provided with a first through hole corresponding to the first adsorption structure, and the first adsorption structure is located in the first through hole;

[0019] The boss is provided with a second through hole corresponding to the second adsorption structure, and the second adsorption structure is located in the second through hole;

[0020] The boss is provided with a third through hole corresponding to the third adsorption structure, and the third adsorption structure is located in the third through hole.

[0021] Optionally, the first platform is provided with a plurality of limiting members, which are spaced apart on the top surface of the first platform along the circumference of the display screen, and the limiting members are detachably connected to the first platform.

[0022] Optionally, the limiting member can undergo elastic deformation.

[0023] Optionally, the display screen testing fixture further includes a second platform for supporting the circuit board of the display screen.

[0024] Optionally, the bottom surface of the base is provided with a third hole, the top surface of the base is provided with a connecting pipe, the second platform is provided with a fourth adsorption structure, and the third hole and the fourth adsorption structure are connected through the connecting pipe.

[0025] Optionally, the bottom surface of the base is provided with a third groove, and both the second hole and the third hole are located in the third groove.

[0026] Optionally, the top surface of the second stage is higher than the top surface of the first stage.

[0027] Optionally, the display screen testing fixture further includes:

[0028] A test adapter is used for electrical connection with the circuit board of the display screen, and the test adapter is fixed to the top surface of the base;

[0029] The test connector and the first locking member are provided. The test connector is used for electrical connection with the test equipment and is electrically connected to the test adapter. The test connector is fixed to the bottom surface of the base by the first locking member. An anti-detachment structure is provided between the first locking member and the test connector. The anti-detachment structure can prevent the first locking member from falling off.

[0030] Optionally, the display screen testing fixture further includes a limiting mechanism, the limiting mechanism comprising:

[0031] A pressure head is provided corresponding to the circuit board of the display screen, and one end of the pressure head is hinged to the top surface of the base;

[0032] A limiting elastic element is configured to cause the other end of the pressure head to have a tendency to move away from the base;

[0033] A pressure block and a first elastic element, wherein the pressure block is disposed on the side of the circuit board facing the display screen, and the first elastic element is sandwiched between the pressure block and the pressure head;

[0034] A locking assembly for locking or unlocking the pressure head from the base, so that the pressure block and the base can clamp the circuit board of the display screen.

[0035] Optionally, the display screen testing fixture further includes a protective mechanism, the protective mechanism comprising:

[0036] A protective sleeve, which is fitted over the outside of the test adapter;

[0037] A second elastic element is configured to cause the sheath to have a tendency to move vertically upwards.

[0038] Optionally, the first locking element is a semi-threaded bolt, and the test connector is provided with a threaded hole corresponding to the semi-threaded bolt.

[0039] Optionally, the test adapter includes a blade-shaped probe that plugs into the circuit board of the display screen.

[0040] Optionally, the first cover includes:

[0041] The first plate has the first hole located on it; the first plate is located on one side of the first platform.

[0042] The second plate is connected to the first plate. In the vertical direction, the orthographic projection of the second plate is located within the orthographic projection of the first platform; the second plate reuses the first platform.

[0043] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0044] The display screen testing fixture of this utility model has a first stage, a first groove, and a second groove all located on the top surface of a base. This allows the first sealing cavity and the first adsorption structure communicating with the first sealing cavity, as well as the second sealing cavity and the second adsorption structure communicating with the second sealing cavity, to be located on the top surface of the base. This effectively shortens the distance between the first adsorption structure and the first sealing cavity, and the distance between the second adsorption structure and the second sealing cavity, thereby improving adsorption stability and enhancing the safety of the display screen and the accuracy of test results. Simultaneously, the opening of the second groove is sealed by the first stage, eliminating the need for a cover plate for the second groove and simplifying the structure of the display screen testing fixture. This results in a display screen testing fixture with advantages of good manufacturability and low cost. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the first structure of the display screen testing fixture in this embodiment of the present invention;

[0046] Figure 2 This is an exploded view of the display screen testing fixture in an embodiment of this utility model;

[0047] Figure 3 This is a schematic diagram of the second structure of the display screen testing fixture in an embodiment of this utility model;

[0048] Figure 4 This is a schematic diagram of the limiting mechanism in an embodiment of the present utility model.

[0049] Figure label:

[0050] 1. Base; 11. First groove; 12. Second groove; 13. Second hole; 14. Third hole; 15. Third groove; 16. Positioning structure; 2. First cover; 21. First hole; 22. Connecting hole; 3. First platform; 31. First adsorption structure; 32. Second adsorption structure; 33. Third adsorption structure; 34. Boss; 341. First through hole; 342. Second through hole; 343. Third through hole; 35. Mounting hole; 36. Slot; 4. Limiting component; 5. Second platform; 51. Fourth adsorption structure; 61. Test adapter; 62. Test connector; 63. First locking component; 7. Second cover; 8. Limiting mechanism; 81. Pressure head; 82. Pressure block; 83. Locking assembly; 831. Buckle; 832. Locking block; 84. Pressure seat; 91. Protective sleeve; 10. Connecting pipeline. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0052] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0053] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0054] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for 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 utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0055] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0056] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0057] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0058] like Figure 1-3 As shown, this embodiment provides a display screen testing fixture, including a base 1, a first cover 2, a first platform 3, at least one first adsorption structure 31, and at least one second adsorption structure 32. The top surface of the base 1 is provided with a first groove 11 and a second groove 12, and the bottom surface of the base 1 is provided with a second hole 13 communicating with the second groove 12. The first cover 2 is used to close the groove opening of the first groove 11 and form a first sealing cavity. The first cover 2 is provided with a first hole 21 communicating with the first sealing cavity. The first platform 3 is fixed on the top surface of the base 1 and can close the groove opening of the second groove 12 to form a second sealing cavity. At least one first adsorption structure 31 is communicating with the first sealing cavity, and at least one second adsorption structure 32 is communicating with the second sealing cavity.

[0059] Understandably, at least one first adsorption structure 31 and at least one second adsorption structure 32 can be fixed on the top surface of the base 1. By providing mounting holes 35 on the first platform 3 corresponding to the first adsorption structure 31 and the second adsorption structure 32, both the first adsorption structure 31 and the second adsorption structure 32 can be in contact with the display screen.

[0060] It should be noted that during automated testing of the display screen, the display screen is first placed on the first platform 3, where it is held in place by the first adsorption structure 31 and the second adsorption structure 32 to prevent displacement and drop during handling. Then, the display screen and the display screen testing fixture are conveyed together by a belt conveyor or other transport mechanism, passing through various testing stations. Upon arrival at a testing station, a robotic arm transfers the display screen testing fixture to the testing device, where testing, programming, and other process operations and inspections can be performed on the display screen mounted on the testing fixture.

[0061] In this embodiment of the display screen testing fixture, the display screen only needs to be loaded with the display screen testing fixture once to complete the testing of multiple test stations. It will not cause defects such as uneven color or broken screen due to repeated loading and unloading of the display screen.

[0062] When the display test fixture is gripped by the robotic arm, the first hole 21 connects to the vacuum suction mechanism on the robotic arm to suction the first sealed cavity through the first hole 21, and then the display screen is adsorbed and fixed by the first adsorption structure 31. When the display test fixture is on the testing device, the second hole 13 connects to the vacuum suction mechanism on the testing device to suction the second sealed cavity through the second hole 13, and then the display screen is adsorbed and fixed by the second adsorption structure 32, thus ensuring that the display screen is always fixed during the testing process and will not shift or fall.

[0063] In this embodiment of the display screen testing fixture, the first stage 3, the first groove 11, and the second groove 12 are all located on the top surface of the base 1. This allows the first sealing cavity and the first adsorption structure 31 communicating with the first sealing cavity, as well as the second sealing cavity and the second adsorption structure 32 communicating with the second sealing cavity, to be located on the top surface of the base 1. This effectively shortens the distance between the first adsorption structure 31 and the first sealing cavity, and the distance between the second adsorption structure 32 and the second sealing cavity, thereby improving adsorption stability and enhancing the safety of the display screen and the accuracy of the test results. Simultaneously, the opening of the second groove 12 is sealed by the first stage 3, eliminating the need for a cover plate for the second groove 12. This simplifies the structure of the display screen testing fixture, giving it advantages such as good manufacturability and low cost.

[0064] Optionally, the first cover plate includes a first plate and a second plate, with a first hole 21 provided on the first plate; the first plate is located on one side of the first stage 3; the second plate is connected to the first plate, and in the vertical direction, the orthographic projection of the second plate is located within the orthographic projection of the first stage 3; the second plate reuses the first stage 3, thereby further simplifying the structure of the display screen testing fixture and reducing costs.

[0065] Optionally, the first groove 11 is a straight groove, which has a simple structure, is easy to manufacture, and helps to reduce costs.

[0066] Optionally, the second groove 12 includes a first groove segment, a second groove segment, and a third groove segment connected in sequence. The angle between the center line of the first groove segment and the center line of the second groove segment is a first obtuse angle, and the angle between the center line of the second groove segment and the center line of the third groove segment is a second obtuse angle. This makes the second groove 12 not only simple in structure and easy to manufacture, but also has a small total length, which is beneficial to improving processing efficiency and reducing costs.

[0067] Optionally, the display screen testing fixture also includes at least one third adsorption structure 33. The third adsorption structure 33 is not connected to the first sealing cavity, nor is it connected to the second sealing cavity. The third adsorption structure 33, the first adsorption structure 31, and the second adsorption structure 32 are arranged in a triangular structure. That is, the third adsorption structure 33 only provides support for the display screen and does not have the function of adsorbing and fixing the display screen. The third adsorption structure 33 does not need to be connected to the first groove 11 and the second groove 12, thus shortening the length of the first groove 11 and the second groove 12 and improving the manufacturability of the base 1. By arranging the third adsorption structure 33, the first adsorption structure 31, and the second adsorption structure 32 in a triangular structure, the support stability for the display screen is improved, which helps ensure the consistency of the display screen's position on the display screen testing fixture, thereby improving the safety and testing accuracy of the display screen.

[0068] Optionally, two second adsorption structures 32 are provided, with one third adsorption structure 33, one first adsorption structure 31, and two second adsorption structures 32 arranged in a quadrilateral structure. Since displays are typically quadrilateral structures, the above arrangement improves the support stability of the quadrilateral display and the uniformity of stress on the display, thus protecting it.

[0069] Optionally, both second adsorption structures 32 are located on the same diagonal of the quadrilateral structure, which helps to improve the stability of the adsorption and fixation of the display screen, as well as the uniformity of the force on the display screen.

[0070] Optionally, the first adsorption structure 31 is a first vacuum suction cup. The second adsorption structure 32 is a second vacuum suction cup. Using a vacuum suction cup to adhere and fix the display screen provides higher stability. Further, the third adsorption structure 33 is a third vacuum suction cup. Alternatively, the first adsorption structure 31, the second adsorption structure 32, and the third adsorption structure 33 can also be suction nozzles of other structures; the first adsorption structure 31, the second adsorption structure 32, and the third adsorption structure 33 can also be suction holes, which are not limited here.

[0071] It should be noted that when the first adsorption structure 31, the second adsorption structure 32, and the third adsorption structure 33 are vacuum suction cups or nozzles, the first stage 3 is provided with mounting holes 35 corresponding to the first adsorption structure 31, the second adsorption structure 32, and the third adsorption structure 33 respectively. The mounting hole 35 corresponding to the first adsorption structure 31 communicates with the first sealing cavity, and the mounting hole 35 corresponding to the second adsorption structure 32 communicates with the second sealing cavity. One end of the vacuum suction cup or nozzle is installed in the corresponding mounting hole 35. Furthermore, when the second plate of the first cover 2 does not reuse the first stage 3, the first cover 2 is also provided with a connection hole 22 corresponding to the first adsorption structure 31. The first adsorption structure 31 communicates with the first sealing cavity through the connection hole 22.

[0072] Optionally, the top surface of the first platform 3 is provided with a protrusion 34, and the protrusion 34 is provided with a first through hole 341 corresponding to the first adsorption structure 31, the first adsorption structure 31 being located within the first through hole 341. Further, the protrusion 34 is provided with a second through hole 342 corresponding to the second adsorption structure 32, the second adsorption structure 32 being located within the second through hole 342. Further, the protrusion 34 is provided with a third through hole 343 corresponding to the third adsorption structure 33, the third adsorption structure 33 being located within the third through hole 343. By supporting the display screen with the protrusion 34, the contact area between the display screen and the first platform 3 can be reduced, lowering the risk of display screen wear; and the first through hole 341 avoids the first adsorption structure 31, the second through hole 342 avoids the second adsorption structure 32, and the third through hole 343 avoids the third adsorption structure 33.

[0073] Optionally, the first platform 3 is provided with multiple limiting members 4, which are spaced apart along the circumference of the display screen on the top surface of the first platform 3. The limiting members 4 are detachably connected to the first platform 3, and can abut against the perimeter of the display screen to position the display screen, improving its stability and positional consistency, and thus enhancing its safety and testing accuracy. Furthermore, the detachable connection of the limiting members 4 to the first platform 3 facilitates the replacement of different specifications of limiting members 4 for different display screen models, thus increasing versatility.

[0074] Optionally, the limiting member 4 can undergo elastic deformation, thereby preventing excessive compression of the display screen and improving the safety of the display screen.

[0075] It should be noted that the shape of the limiting member 4 is not limited in this embodiment. For example, the limiting member 4 is a silicone limiting block, which has a simple structure and low cost.

[0076] Specifically, the first platform 3 is provided with a slot 36, and the limiting member 4 is locked in the slot 36 for easy disassembly.

[0077] Optionally, the display screen testing fixture also includes a second stage 5, which is used to support the circuit board of the display screen, thereby protecting the circuit board, ensuring the reliability of the circuit connection, and improving the accuracy of the test.

[0078] Specifically, the display screen's circuit board is a flexible printed circuit (FPC), which has excellent electrical performance, can meet the design needs of smaller and higher density installations, and also helps to reduce assembly steps and enhance reliability.

[0079] Optionally, the bottom surface of the base 1 is provided with a third hole 14, the top surface of the base 1 is provided with a connecting pipe 10, and the second stage 5 is provided with a fourth adsorption structure 51. The third hole 14 and the fourth adsorption structure 51 are connected through the connecting pipe 10, so that the circuit board of the display screen can be adsorbed and fixed through the third hole 14. This not only ensures the stability of the circuit board but also prevents damage to the circuit board. At the same time, the display screen and its circuit board are fixed by adsorption, which can share the vacuum suction mechanism of the robotic arm and the testing device, simplifying the structure and reducing costs.

[0080] Specifically, the bottom surface of the first platform 3 is provided with a first channel, the bottom surface of the second platform 5 is provided with a second channel, and the connecting pipe 10 passes through the first channel and the second channel.

[0081] Specifically, the fourth adsorption structure 51 includes at least one fourth through hole, which is located on the top surface of the second platform 5 and extends through the second platform 5. Each of the at least one fourth through hole is connected to the connecting pipe 10. It should be noted that in this embodiment, the number and arrangement of the fourth through holes are not limited.

[0082] Optionally, the bottom surface of the base 1 is provided with a third groove 15, and the second hole 13 and the third hole 14 are both located in the third groove 15, which facilitates the second hole 13 and the third hole 14 to dock with the vacuum suction mechanism of the robotic arm and the testing device, thereby improving convenience.

[0083] Optionally, the base 1 is provided with a positioning structure 16, which can be aligned with the testing device and the robotic arm respectively, facilitating accurate placement and removal of the display screen testing fixture. Exemplarily, the positioning structure 16 is a positioning hole, and both the testing device and the robotic arm are provided with positioning pins corresponding to the positioning holes. Alternatively, the positioning structure 16 can also be a positioning pin, with both the testing device and the robotic arm having positioning holes corresponding to the positioning holes.

[0084] Optionally, the top surface of the second platform 5 is higher than the top surface of the first platform 3. It should be noted that, generally, the thickness of the display screen is greater than the thickness of the circuit board. By making the top surface of the second platform 5 higher than the top surface of the first platform 3, the second platform 5 can be matched with the circuit board, which helps to ensure the reliability of the connection between the circuit board and the display screen.

[0085] Optionally, the display screen testing fixture also includes a test adapter 61, a test connector 62, and a first locking member 63. The test adapter 61 is used for electrical connection with the circuit board of the display screen and is fixed to the top surface of the base 1. The test connector 62 is used for electrical connection with the testing equipment and is electrically connected to the test adapter 61. The test connector 62 is fixed to the bottom surface of the base 1 by the first locking member 63. With this configuration, when testing the display screen, it is only necessary to electrically connect the circuit board of the display screen to the test adapter 61. The load signals of the test devices at each test station can be transmitted to the circuit board through the test connector 62. This means that the circuit board of the display screen only needs to be contacted and connected sequentially to achieve multiple tests, reducing the number of contact connections of the circuit board and thus improving the yield.

[0086] Furthermore, an anti-detachment structure is provided between the first locking member 63 and the test connector 62, which can prevent the first locking member 63 from falling off. During the handling of the display test fixture, slight vibrations will occur. The anti-detachment structure can prevent the first locking member 63 from falling off and causing the test device to malfunction.

[0087] Optionally, the first locking element 63 is a semi-threaded bolt, and the test connector 62 is provided with a threaded hole corresponding to the semi-threaded bolt. The semi-threaded bolt is threaded into the threaded hole to form the aforementioned anti-loosening structure. This not only achieves the purpose of preventing the first locking element 63 from falling off, but also has a simple structure, is easy to implement, and has low cost.

[0088] For example, the test connector 62 is a PCB board. Specifically, the bottom surface of the base 1 is provided with a mounting groove, and the PCB board is fixed in the mounting groove by screws or other fasteners. The display test fixture also includes a second cover 7, which is provided with a connection port corresponding to the pins of the PCB board, so that the pins can be connected to the test device through the connection port. The second cover 7 covers the opening of the mounting groove to improve the aesthetics of the display test fixture and to protect the PCB board.

[0089] Optionally, such as Figure 4As shown, the display screen testing fixture also includes a limiting mechanism 8. The limiting mechanism 8 includes a pressure head 81, a limiting elastic element (not shown in the figure), a pressure block 82, a first elastic element (not shown in the figure), and a locking assembly 83. The pressure head 81 is correspondingly arranged with respect to the circuit board of the display screen, and one end of the pressure head 81 is hinged to the top surface of the base 1. The limiting elastic element is configured to make the other end of the pressure head 81 have a tendency to move away from the base 1. The pressure block 82 is located on the side of the pressure head 81 facing the circuit board of the display screen, and the first elastic element is clamped between the pressure block 82 and the pressure head 81. The locking assembly 83 is used to lock or unlock the pressure head 81 and the base 1 so that the pressure block 82 and the base 1 can clamp the circuit board of the display screen.

[0090] Understandably, when the pressure head 81 is not under force, the other end of the pressure head 81 will move away from the base 1 under the elastic force of the limiting elastic element. That is, at this time, the pressure head 81 is in an open state, which facilitates the placement of the display circuit board between the pressure head 81 and the test adapter 61. After the display circuit board is placed in place, the pressure head 81 is rolled by a rolling manipulator or other pressing mechanism to squeeze the limiting elastic element, thereby causing the other end of the pressure head 81 to gradually approach the display circuit board, so that the pressure block 82 gradually abuts against the circuit board to apply pressure to the circuit board, so that the circuit board is inserted into the test adapter 61, that is, the circuit board and the test adapter 61 are electrically connected. Then, the pressure head 81 is locked to the base 1 by the locking component 83, so that the display circuit board is clamped by the pressure head 81 and the base 1 to ensure the connection stability between the circuit board and the test adapter 61.

[0091] In this process, after the pressure block 82 comes into contact with the circuit board, as the rolling robot further rolls the pressure head 81, the pressure block 82 and the pressure head 81 will squeeze the first elastic element, thereby playing a buffering role and preventing the circuit board from being damaged due to excessive force.

[0092] The display screen needs to be lit up quickly when it goes through multiple manufacturing processes and equipment. By adopting the above-mentioned limiting mechanism, rapid lighting can be achieved and the reliability of the connection between the circuit board and the test connector can be guaranteed.

[0093] For example, the limiting elastic element is a torsion spring; the first elastic element is a compression spring.

[0094] Specifically, the locking assembly 83 includes a latch 831 and a locking block 832. The latch 831 is fixed to the base 1, and the locking block 832 is located on the pressure head 81. Pressing down on the pressure head 81 and engaging the latch 831 and locking block 832 locks the pressure head 81 to the base 1. Alternatively, the latch 831 can be located on the pressure head 81, and the locking block 832 on the base 1. It should be noted that this embodiment does not limit the number or location of the locking assemblies 83.

[0095] Optionally, the display test fixture also includes a protective mechanism, which includes a sleeve 91 and a second elastic member (not shown in the figure). The sleeve 91 is fitted over the outside of the test adapter 61. The second elastic member is configured to give the sleeve 91 a vertical upward tendency, so that the top surface of the sleeve 91 is higher than the top surface of the test adapter 61, thereby protecting the test adapter 61 when the circuit board is not in contact with it. When the circuit board is inserted into the test adapter 61, pressure can be applied to the sleeve 91 through the circuit board, squeezing the second elastic member, so that the sleeve 91 does not affect the connection between the circuit board and the test adapter 61.

[0096] For example, the second elastic element is a compression spring, which is sandwiched between the sheath 91 and the base 1.

[0097] Optionally, the limiting mechanism 8 also includes a pressure seat 84, which is fixed to the base 1. The test adapter 61 is fixed to the pressure seat 84, one end of the pressure head 81 is hinged to the pressure seat 84, the buckle 831 is fixed to the pressure seat 84, and the second elastic element is connected between the protective sleeve 91 and the pressure seat 84, thereby facilitating the limiting mechanism 8 to form a whole and improving assembly convenience.

[0098] Optionally, the test adapter 61 includes a blade-shaped probe that plugs into the circuit board of the display screen, which helps to improve the connection reliability between the test adapter 61 and the circuit board.

[0099] For example, the working principle of the display screen testing fixture in this embodiment is as follows:

[0100] A robotic arm grasps the display screen and moves it above the display screen testing fixture. A CCD camera identifies the alignment, and the display screen is placed on the first platform 3, while the display screen's circuit board is placed on the second platform 5, aligning the circuit board with the test adapter 61. Then, the robotic arm rolls the pressure head 81, engaging the latch 831 with the locking block 832, thereby pressing the circuit board and the test adapter 61 together to achieve electrical connection. The robotic arm can then grasp the base 1 to transfer the display screen for testing.

[0101] When the display test fixture is grasped by the robotic arm, the first hole 21 is connected to the vacuum suction mechanism on the robotic arm so as to suction the first sealed cavity through the first hole 21, and then to adsorb and fix the display screen through the first adsorption structure 31.

[0102] When the display test fixture is placed on the test device, the second hole 13 is connected to the vacuum suction mechanism on the test device so that the second sealed cavity is suctioned through the second hole 13, and then the display screen is adsorbed and fixed through the second adsorption structure 32, thereby ensuring that the display screen is always fixed during the test and will not shift or fall.

[0103] The testing device powers the circuit board and loads signals through the test connector 62 to light up the display screen and perform process operations and tests such as testing and programming.

[0104] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display screen testing fixture, characterized in that, include: The base has a first groove and a second groove on its top surface, and a second hole communicating with the second groove on its bottom surface. A first cover body, the first cover body being used to close the opening of the first groove and form a first sealing cavity, the first cover body being provided with a first hole communicating with the first sealing cavity; A first platform is fixed to the top surface of the base, and the first platform is capable of closing the opening of the second groove and forming a second sealed cavity. At least one first adsorption structure and at least one second adsorption structure, wherein at least one first adsorption structure is in communication with the first sealed cavity, and at least one second adsorption structure is in communication with the second sealed cavity.

2. The display screen testing fixture according to claim 1, characterized in that, The first groove is a straight groove; and / or, The second groove includes a first groove segment, a second groove segment, and a third groove segment connected in sequence. The angle between the center line of the first groove segment and the center line of the second groove segment is a first obtuse angle, and the angle between the center line of the second groove segment and the center line of the third groove segment is a second obtuse angle.

3. The display screen testing fixture according to claim 1, characterized in that, It also includes at least one third adsorption structure, which is not in communication with the first sealed cavity and is not in communication with the second sealed cavity; wherein, The third adsorption structure, the first adsorption structure, and the second adsorption structure are arranged in a triangular structure.

4. The display screen testing fixture according to claim 3, characterized in that, The second adsorption structure has two parts, and the third adsorption structure, the first adsorption structure, and the two second adsorption structures are arranged in a quadrilateral structure.

5. The display screen testing fixture according to claim 4, characterized in that, Both of the second adsorption structures are located on the same diagonal of the quadrilateral structure.

6. The display screen testing fixture according to claim 3, characterized in that, The top surface of the first stage is provided with a boss, and the boss is provided with a first through hole corresponding to the first adsorption structure, and the first adsorption structure is located in the first through hole; The boss is provided with a second through hole corresponding to the second adsorption structure, and the second adsorption structure is located in the second through hole; The boss is provided with a third through hole corresponding to the third adsorption structure, and the third adsorption structure is located in the third through hole.

7. The display screen testing fixture according to claim 1, characterized in that, The first platform is provided with a plurality of limiting members, which are spaced apart on the top surface of the first platform along the circumference of the display screen, and the limiting members are detachably connected to the first platform.

8. The display screen testing fixture according to claim 7, characterized in that, The limiting member is capable of elastic deformation.

9. The display screen testing fixture according to claim 1, characterized in that, The display screen testing fixture also includes a second platform, which is used to support the circuit board of the display screen.

10. The display screen testing fixture according to claim 9, characterized in that, The base has a third hole on its bottom surface and a connecting pipe on its top surface. The second platform has a fourth adsorption structure, and the third hole and the fourth adsorption structure are connected through the connecting pipe.

11. The display screen testing fixture according to claim 10, characterized in that, The bottom surface of the base is provided with a third groove, and both the second hole and the third hole are located in the third groove.

12. The display screen testing fixture according to claim 9, characterized in that, The top surface of the second platform is higher than the top surface of the first platform.

13. The display screen testing fixture according to claim 1, characterized in that, The display screen testing fixture also includes: A test adapter is used for electrical connection with the circuit board of the display screen, and the test adapter is fixed to the top surface of the base; The test connector and the first locking member are provided. The test connector is used for electrical connection with the test equipment and the test adapter. The test connector is fixed to the bottom surface of the base by the first locking member. An anti-detachment structure is provided between the first locking member and the test connector to prevent the first locking member from falling off.

14. The display screen testing fixture according to claim 13, characterized in that, The display screen testing fixture also includes a limiting mechanism, which includes: A pressure head is provided corresponding to the circuit board of the display screen, and one end of the pressure head is hinged to the top surface of the base; A limiting elastic element is configured to cause the other end of the pressure head to have a tendency to move away from the base; A pressure block and a first elastic element, wherein the pressure block is disposed on the side of the circuit board facing the display screen, and the first elastic element is sandwiched between the pressure block and the pressure head; A locking assembly for locking or unlocking the pressure head from the base, so that the pressure block and the base can clamp the circuit board of the display screen.

15. The display screen testing fixture according to claim 14, characterized in that, The display screen testing fixture also includes a protective mechanism, which comprises: A protective sleeve, which is fitted over the outside of the test adapter; A second elastic element is configured to cause the sheath to have a tendency to move vertically upwards.

16. The display screen testing fixture according to claim 13, characterized in that, The first locking component is a half-threaded bolt, and the test connector is provided with a threaded hole corresponding to the half-threaded bolt.

17. The display screen testing fixture according to claim 13, characterized in that, The test adapter includes blade-shaped probes that are inserted into the circuit board of the display screen.

18. The display screen testing fixture according to claim 1, characterized in that, The first cover includes: The first plate has the first hole located on it; the first plate is located on one side of the first platform. The second plate is connected to the first plate. In the vertical direction, the orthographic projection of the second plate is located within the orthographic projection of the first platform; the second plate reuses the first platform.

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