A display panel adjustment table for a display panel detection device

Abstract

The application discloses a display panel adjusting table for a display panel detection device, which comprises a base, a mounting plate fixedly arranged on the base and forming a mounting base of the adjusting table, a wedge lifting assembly and a horizontal driving assembly in transmission connection, the horizontal driving assembly being used for converting linear motion in the horizontal direction into lifting motion in the vertical direction, and a lifting guide assembly arranged on the mounting plate and used for providing guidance for lifting motion of a supporting plate and guaranteeing lifting stability. The wedge lifting assembly and the horizontal driving assembly are used in cooperation to convert linear motion in the horizontal direction into lifting motion in the vertical direction, the transmission efficiency is high, the gap is small, there is no impact vibration, the limiting and guiding effect of the lifting guide assembly is matched, and it is ensured that the supporting plate is lifted stably without inclination and deviation. The horizontal driving assembly is composed of a servo motor and a ball screw in transmission, and the inclined surface of the wedge lifting assembly is designed to realize accurate fine adjustment of the lifting height, so that the problems of unstable lifting and insufficient precision of the existing table are effectively solved.

Description

Technical Field

[0001] This invention relates to the field of semiconductor display panel testing auxiliary equipment technology, specifically a display panel adjustment platform for a display panel testing device. Background Technology

[0002] In the display panel testing process, the display panel adjustment platform is a core component for achieving precise positioning and attitude adjustment of the display panel. Its lifting stability, positioning accuracy, and adsorption stability directly determine the contact consistency between the probe and the display panel pads, thus affecting the reliability of the test results. As display panel manufacturing processes advance to the nanometer scale, even micrometer-level positional deviations or platform tilting can lead to probe damage, pad scratches, and cause chip short circuits or performance degradation. Therefore, extremely high requirements are placed on the accuracy and stability of the display panel adjustment platform.

[0003] Currently, existing display panel testing devices generally suffer from numerous technical defects in their display panel adjustment platforms, making them unsuitable for high-precision testing requirements: Firstly, the lifting mechanism is poorly designed, often using traditional cylinder lifting or lead screw lifting. Cylinder lifting has low precision and is prone to impact vibration, while lead screw lifting has a complex structure, wears out quickly, and cannot achieve smooth micro-lifting, causing the table to shake during lifting and affecting the positioning accuracy of the display panel. Secondly, the conversion efficiency between horizontal drive and lifting motion is low, the transmission gap is large, and jamming is prone to occur, making it impossible to achieve precise control of lifting height. The lifting accuracy often exceeds ±0.02mm, which cannot meet the micron-level detection requirements. Thirdly, the lifting guide structure is imperfect and lacks guiding accuracy. The table is prone to tilting and shifting during the lifting process, which further aggravates the positioning deviation of the display panel. In particular, the installation sequence of the lifting guide component and the installation of the lifting frame are unreasonable. Moreover, the structural design of the installation frame is rudimentary and the installation method is unscientific. Most of them are installed as a whole without the use of component assembly and precise positioning. This makes it easy for gaps to be generated between the installation frame and the lifting limit guide rail. During the lifting process, outward tension is easily generated, and the force is uneven. This not only affects the guiding accuracy, but also easily causes the installation frame to deform, which further aggravates the tilting and shifting of the table and cannot meet the requirements of high-precision detection. Summary of the Invention

[0004] The purpose of this invention is to provide a display panel adjustment platform for a display panel testing device, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a display panel adjustment platform for a display panel detection device, comprising a base, a mounting plate, a horizontal drive assembly, a wedge lifting assembly, a lifting guide assembly, a support plate, a vacuum adsorption assembly, and an adjustment assembly; the mounting plate is fixedly disposed on the base, forming the mounting base of the adjustment platform; the horizontal drive assembly is mounted on the mounting plate to provide horizontal driving power; the wedge lifting assembly is connected to the horizontal drive assembly to convert horizontal linear motion into vertical lifting motion; the lifting guide assembly is disposed on the mounting plate, and its output end is connected to the support plate to provide guidance for the lifting motion of the support plate, ensuring lifting stability; the support plate is simultaneously connected to the output ends of the wedge lifting assembly and the lifting guide assembly, and achieves vertical lifting with the drive of the wedge lifting assembly; the vacuum adsorption assembly is disposed on the support plate to perform negative pressure adsorption positioning of the display panel, preventing the display panel from shifting; the adjustment assembly is disposed between the support plate and the vacuum adsorption assembly to support and fine-tune the position of the vacuum adsorption assembly, ensuring the positioning accuracy of the display panel.

[0006] Preferably, the horizontal drive assembly includes a motor, a screw, a moving plate, a horizontal limiting guide rail, and a horizontal limiting slider; the motor is fixedly mounted on the mounting plate, the screw is driven by the output end of the motor, the moving plate is threadedly engaged with the screw, and moves horizontally as the screw rotates; the horizontal limiting guide rail is fixedly mounted on the mounting plate, and the horizontal limiting slider is fixedly mounted on the bottom of the moving plate and slides in engagement with the horizontal limiting guide rail, thereby limiting and guiding the horizontal movement of the moving plate; a lower inclined block of the inclined wedge lifting assembly is fixedly mounted on the moving plate.

[0007] Preferably, the inclined wedge lifting assembly includes a lower inclined block, an upper inclined block, a moving guide rail, a moving guide block, and a lifting plate; the lower inclined block is fixedly mounted on the moving plate of the horizontal drive assembly, and the upper inclined block is correspondingly mounted on the inclined surface of the lower inclined block; the moving guide rail is fixedly mounted on the inclined surface of the lower inclined block, and the moving guide block is fixedly mounted on the bottom of the upper inclined block and slides in cooperation with the moving guide rail to ensure that the upper inclined block slides smoothly along the inclined surface; a lifting plate is fixedly mounted on the top of the upper inclined block, and the lifting plate is fixedly connected to the support plate to drive the support plate to rise and fall synchronously; the lower inclined block and the upper inclined block are formed by separate rectangular blocks and spliced ​​together to form an integrated structure.

[0008] Preferably, the lifting guide assembly includes a mounting frame, a lifting frame, a lifting limit guide rail, and a lifting limit slider; the mounting frame is fixedly mounted on the mounting plate, the lifting limit guide rail is fixedly mounted on the inner side wall of the mounting frame and arranged vertically; the lifting limit slider is fixedly mounted on the outer side wall of the lifting frame and slides in cooperation with the lifting limit guide rail, thereby limiting and guiding the lifting of the lifting frame; the top of the lifting frame is fixedly connected to the support plate, driving the support plate to lift smoothly.

[0009] Preferably, the vacuum adsorption assembly includes a vacuum adsorption platform and adsorption holes; the vacuum adsorption platform is disposed above the tray, and the adsorption holes are equidistantly opened on the vacuum adsorption platform, and the adsorption holes are connected to an external negative pressure air source for negative pressure adsorption and positioning of the display panel; the vacuum adsorption platform is also provided with through holes for the adjustment end of the adjustment assembly to extend out, without affecting the up-down and left-right micro-movement of the adjustment end of the adjustment assembly.

[0010] Preferably, the adjustment component includes a support adjustment device and an alignment adjustment device; both the support adjustment device and the alignment adjustment device are equidistantly arranged between the tray and the vacuum adsorption table; the support adjustment device is used to provide stable support for the vacuum adsorption table, and the adjustment end of the alignment adjustment device extends out of the through hole on the vacuum adsorption table to make micro-movement adjustments to the vacuum adsorption table in the up-down and left-right directions, so as to achieve precise alignment of the display panel.

[0011] Preferably, the motor is a servo motor or a stepper motor, the screw is a ball screw, and the moving plate is a screw nut seat adapted to the ball screw, so that high-precision linear motion in the horizontal direction can be achieved through ball screw transmission.

[0012] Preferably, the inclined surfaces of the lower inclined block and the upper inclined block have the same inclination angle, and the moving guide rail is arranged along the inclined surface direction to ensure that the upper inclined block moves smoothly and accurately as the lower inclined block moves horizontally.

[0013] Preferably, the mounting frame is a rectangular frame structure, the lifting frame is a rectangular frame adapted to the mounting frame, and the lifting limit guide rail is arranged in the vertical direction to provide stable guidance for the vertical lifting movement of the lifting frame.

[0014] Preferably, the adsorption holes are evenly distributed in a matrix on the vacuum adsorption stage to ensure that the display panel is evenly adsorbed and stably positioned.

[0015] Compared with the prior art, the beneficial effects of the present invention are: (1) The inclined wedge lifting assembly and the horizontal drive assembly are used to convert the horizontal linear motion into the vertical lifting motion. The transmission efficiency is high, the gap is small, and there is no impact vibration. With the limit and guidance of the lifting guide assembly, the pallet is lifted smoothly without tilting or deviation. The horizontal drive assembly uses a servo motor and ball screw transmission. The inclined surface design of the inclined wedge lifting assembly can realize precise micro-adjustment of the lifting height, effectively solving the problems of unstable lifting and insufficient accuracy of the existing table, and adapting to the detection requirements of nanoscale display panel manufacturing process. (2) The adsorption holes of the vacuum adsorption component are uniformly distributed in a matrix. After being connected to the external negative pressure gas source, they can generate a uniform and stable adsorption force. The adsorption force can be flexibly adjusted according to the size of the display panel. This can not only achieve a firm positioning of the display panel, but also prevent damage to the surface of the display panel, effectively preventing displacement of the display panel during the testing process. The alignment adjustment device of the adjustment component can make micro-adjustments to the vacuum adsorption stage in the up and down and left and right directions, which can compensate for processing and installation errors, further improve the positioning accuracy of the display panel, and ensure that the probe and the display panel pads are accurately connected. (3) The components are compact and reliably connected. The base and the mounting plate form a stable mounting base. The horizontal drive component, the wedge lifting component, the lifting guide component, the tray, the vacuum adsorption component and the adjustment component work together to achieve smooth lifting, firm adsorption and precise fine adjustment of the display panel. The degree of automation is high and it can be seamlessly connected with the control system of the display panel testing equipment to reduce manual intervention and improve testing efficiency. (4) The lower inclined block and the upper inclined block of the inclined wedge lifting assembly are made of a rectangular block. After splicing, the structure is stable, the force is uniform, and it is not easy to wear or deform. The horizontal limit guide rail and the horizontal limit slider, the moving guide rail and the moving guide block, and the lifting limit guide rail and the lifting limit slider all adopt high-precision linear matching, which makes the sliding smooth and the wear small, and can effectively extend the service life of the device. (5) Optimize the installation structure and installation sequence of the lifting guide assembly. The installation sequence is to install the lifting frame first and then the mounting frame to ensure the relative position of the lifting frame and the mounting frame is accurate. The mounting frame adopts a component assembly structure of four vertical plates and four L-shaped connectors. Adjacent vertical plates are connected and fixed by L-shaped connectors. The vertical plates and the mounting plate are fixedly connected by double rows of bolts or multiple sets of bolts. During installation, the vertical plates are installed first to eliminate the gap between the vertical plates and the lifting limit guide rail and to press them tightly. Then, they are connected by L-shaped connectors, which can effectively offset the outward tension generated during the lifting process, so that the mounting frame is uniformly stressed, avoid deformation of the mounting frame, further improve the lifting guide accuracy, and ensure that the pallet lifts and falls smoothly without deviation. From the installation level, the positioning accuracy of the display panel is further guaranteed. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a display panel adjustment platform for a display panel testing device proposed in this invention; Figure 2 This is a partial structural diagram of a display panel adjustment platform for a display panel testing device proposed in this invention. Figure 3 This is a schematic diagram of the structure between the mounting frame and the lifting frame in the display panel adjustment platform of the display panel testing device proposed in this invention; Figure 4This is a schematic diagram of the structure between the horizontal drive component and the inclined wedge lifting component in the display panel adjustment platform of the display panel detection device proposed in this invention.

[0017] In the diagram: 11. Base; 12. Mounting plate; 13. Support plate; 14. Support adjustment device; 15. Alignment adjustment device; 16. Mounting frame; 17. Lifting frame; 18. Lifting plate; 21. Motor; 22. Screw; 23. Moving plate; 24. Horizontal limit guide rail; 25. Horizontal limit slider; 26. Lower inclined block; 27. Upper inclined block; 28. Moving guide rail; 29. ​​Moving guide block; 31. Vacuum adsorption table; 32. Adsorption hole; 41. Lifting limit guide rail; 42. Lifting limit slider. Detailed Implementation

[0018] In view of the shortcomings of the prior art, the inventors of this invention, through long-term research and extensive practice, have proposed the technical solution of this invention. The technical solution, its implementation process, and principles will be further explained below with reference to the accompanying drawings and specific implementation examples in the embodiments of this application.

[0019] It should be noted that the embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. The described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, the present invention covers any substitutions, modifications, equivalent methods and solutions made on the spirit, principles and scope of the present invention as defined by the claims. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this application, the terms "first," "second," "third," and similar words do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "a" or "one," and similar words, do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including," and similar words, mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including," and their equivalents, but do not exclude other elements or objects. The terms "connected" or "linked," and similar words, are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0021] In the description of this application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this application and for simplification, 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. Furthermore, when using positional terms such as "both sides," "outer side," and "upper and lower," it should be understood that they are used only for ease of understanding and description, taking into account that the structure may be oriented to other positions.

[0022] In the description of this application, unless otherwise expressly specified and limited, the technical or scientific terms used shall have the ordinary meaning understood by a person with ordinary skills in the art to which this application pertains. Terms such as “installation,” “connection,” and “joining” shall be interpreted broadly, for example, as fixed connection, detachable connection, mating connection, or integral connection. For a person skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0023] Furthermore, to provide the public with a better understanding of the present invention, certain specific details are described in detail in the following description of the invention. However, those skilled in the art will fully understand the invention even without these detailed descriptions.

[0024] Please see Figures 1-4 The present invention provides an embodiment of a display panel testing device: a display panel adjustment platform, comprising a base 11 and a mounting plate 12. The base 11 is made of high-strength stainless steel and is precision machined, forming a rectangular flat plate structure. The bottom is fixedly connected to the floor of the testing workshop by expansion bolts. The connection part is provided with shock-absorbing pads, which can effectively resist external vibration and avoid vibration affecting the lifting and positioning accuracy of the platform. The base 11 has precise mounting holes with a positional accuracy error of ≤0.01mm, used to fix the mounting plate 12. Mounting plate 12 is made of aluminum alloy and has a rectangular flat structure. Its size is compatible with base 11. It is fixed to base 11 by bolts. The surface of mounting plate 12 has been precision polished and anodized, with a flatness of ≤0.005mm, no burrs or scratches. It has good structural rigidity, facilitates the installation and positioning of various components, and has anti-static properties.

[0025] Please see Figures 1-4The horizontal drive assembly is used to provide precise driving power in the horizontal direction, providing power support for the movement of the wedge lifting assembly and ensuring precise control of the lifting height. The assembly includes a motor 21, a screw 22, a moving plate 23, a horizontal limit guide rail 24, and a horizontal limit slider 25. The components work together to achieve high-precision linear motion in the horizontal direction. The motor 21 can be a high-precision servo motor, equipped with a high-resolution encoder, and adopts closed-loop vector control. The repeatability of positioning can reach ±0.005mm, and the speed and rotation angle can be precisely controlled to provide stable power for horizontal drive. The motor 21 is fixedly installed on one end of the mounting plate 12 through the motor mount. A shock-absorbing pad is set between the motor mount and the mounting plate 12 to reduce the vibration generated by the motor 21 during operation and avoid affecting the operation of other components. The screw 22 can be a C5 grade ball screw with a precision-ground surface, achieving a transmission efficiency of over 90% and backlash-free transmission. It can convert the rotational motion of the motor 21 into horizontal linear motion. One end of the screw 22 is connected to the output end of the motor 21 via a coupling, while the other end is fixedly connected to the bearing seat on the mounting plate 12 via a bearing, ensuring that the screw 22 rotates smoothly without any wobbling. The movable plate 23 is a screw nut seat adapted to the ball screw, made of aluminum alloy, and threadedly engaged with the screw 22. It moves horizontally as the screw 22 rotates. A horizontal limit slider 25 is bolted to the bottom of the movable plate 23. The horizontal limit guide rail 24 is an SP ultra-precision linear guide rail, fixedly mounted on the mounting plate 12, and arranged along the length of the screw 22. The horizontal limit slider 25 slides with the horizontal limit guide rail 24, limiting and guiding the horizontal movement of the movable plate 23, preventing offset and wobbling during movement, and ensuring horizontal movement accuracy. A lower inclined block 26 of the inclined wedge lifting assembly is bolted to the movable plate 23, driving the lower inclined block 26 to move horizontally synchronously.

[0026] Please see Figures 1-4 The inclined wedge lifting assembly is used to convert the horizontal linear motion provided by the horizontal drive assembly into vertical lifting motion, which drives the support plate 13 to rise and fall smoothly, thereby realizing the height adjustment of the display panel. The assembly includes a lower inclined block 26, an upper inclined block 27, a moving guide rail 28, a moving guide block 29, and a lifting plate 18. The components work together to ensure that the lifting motion is smooth and precise. Both the lower inclined block 26 and the upper inclined block 27 are made of high-strength alloy steel, and undergo precision quenching and grinding, resulting in strong wear resistance and resistance to deformation. The lower inclined block 26 and the upper inclined block 27 are formed from a single rectangular block, spliced ​​together to form an integrated structure. The splicing surfaces fit tightly without gaps, ensuring uniform force distribution and preventing loosening or displacement during lifting. The inclined angle of the lower inclined block 26 is 15°-30°, and the inclined angle of the upper inclined block 27 is the same as that of the lower inclined block 26, ensuring that the upper inclined block 27 can slide smoothly along the inclined surface of the lower inclined block 26. The movable guide rail 28 is a precision linear guide rail, fixedly set on the inclined surface of the lower inclined block 26 and arranged along the inclined surface direction; the movable guide block 29 is fixedly set on the bottom of the upper inclined block 27 and slides in cooperation with the movable guide rail 28. The sliding is smooth and without jamming, and it plays a limiting and guiding role for the sliding of the upper inclined block 27, ensuring that the upper inclined block 27 moves smoothly and accurately with the horizontal movement of the lower inclined block 26. The top of the upper inclined block 27 is fixedly set with a lifting plate 18 by bolts. The lifting plate 18 is made of aluminum alloy and has a rectangular flat plate structure. It is fixedly connected to the support plate 13 by bolts and can drive the support plate 13 to rise and fall synchronously.

[0027] Please see Figures 1-4 The lifting guide assembly is used to provide stable guidance for the lifting movement of the pallet 13, to prevent the pallet 13 from tilting or deviating during the lifting process, and to ensure the smoothness and accuracy of the lifting. The assembly includes a mounting frame 16, a lifting frame 17, a lifting limit guide rail 41, and a lifting limit slider 42. The components work together to achieve smooth lifting guidance of the pallet 13. When installing the lifting frame 17 and the mounting frame 16 onto the mounting plate 12, the lifting frame 16 should be installed first, followed by the mounting frame 17. This ensures accurate relative positioning between the two and avoids installation deviations affecting guiding accuracy. The mounting frame 16 mainly consists of four vertical plates and four L-shaped connectors. Adjacent vertical plates are connected and fixed together by L-shaped connectors. The vertical plates are fixed to the mounting plate 12 with bolts. Double rows of bolts or multiple sets of bolts can be used for fixing to improve the connection's firmness and prevent loosening during lifting. The mounting frame 16 is a rectangular frame structure made of aluminum alloy. During installation, the four vertical plates are installed first, and then fixed to the mounting plate 12 using double-row bolts or multiple sets of bolts. Simultaneously, the gap between the vertical plates and the lifting limit rail 41 is eliminated during installation, and the vertical plates are pressed tightly to ensure a tight fit without any looseness. After all the vertical plates are installed, adjacent vertical plates are connected and fixed using four L-shaped connectors. The L-shaped connectors are fastened to the vertical plates with bolts, effectively offsetting the impact of the support plate 13. The outward tension generated during the lifting process ensures that the mounting frame 16 is subjected to uniform force, preventing deformation of the mounting frame 16 and further improving guiding stability. The mounting frame 16 is located outside the horizontal drive assembly and the wedge lifting assembly. The inner wall of the mounting frame 16 is precision machined with a flatness of ≤0.005mm and is used to fix the lifting limit guide rail 41. The lifting limit guide rail 41 adopts an ultra-precision linear guide rail and is fixedly set on the four inner walls of the mounting frame 16, arranged in the vertical direction. The length of the guide rail is adapted to the maximum lifting stroke of the support plate 13. The lifting frame 17 is a rectangular frame adapted to the mounting frame 16, made of aluminum alloy. The outer wall is fixed with a lifting limit slider 42 by bolts. The lifting limit slider 42 slides smoothly and without gaps with the lifting limit guide rail 41, which limits and guides the lifting of the lifting frame 17, ensuring that the lifting frame 17 rises and falls smoothly in the vertical direction without tilting or deviating. The top of the lifting frame 17 is fixedly connected to the support plate 13 by bolts, which can drive the support plate 13 to rise and fall smoothly and synchronously, further improving the lifting stability of the support plate 13.

[0028] Please see Figures 1-4 The support plate 13 is used to support the vacuum adsorption component and the adjustment component, transmit the lifting power, and ensure that the vacuum adsorption component and the adjustment component rise and fall synchronously with the inclined wedge lifting component. The support plate 13 is made of aluminum alloy and has a rectangular flat plate structure. The surface is precision polished and the flatness is ≤0.005mm. The bottom of the support plate 13 is fixedly connected to the lifting plate 18 and the lifting frame 17. The connection part is provided with reinforcing ribs to improve the structural rigidity, avoid deformation and shaking during the lifting process, and ensure the horizontal posture of the support plate 13 is stable. The vacuum adsorption assembly is used to perform negative pressure adsorption and positioning of the display panel to prevent displacement of the display panel during the detection process and ensure stable positioning of the display panel. The assembly includes a vacuum adsorption platform 31 and adsorption holes 32. The components work together to achieve firm adsorption of the display panel.

[0029] The vacuum adsorption platform 31 adopts an aluminum alloy honeycomb structure and is set above the tray 13. It is a rectangular flat plate with dimensions that match the tray 13. The thickness is 10-15mm, and the surface is hard anodized, smooth and burr-free with a flatness of ≤0.01mm, which can effectively prevent scratches on the display panel surface. The vacuum adsorption platform 31 has several adsorption holes 32, which are evenly distributed in a matrix. The hole diameter is 1.5-2mm and the hole spacing is 20-30mm, ensuring uniform adsorption force on the display panel. The adsorption holes 32 are connected to an external negative pressure air source through air channels. The negative pressure range can be adjusted from -0.05 to 0.08MPa, which can flexibly adjust the adsorption force according to the size and thickness of the display panel, so as to achieve firm positioning of the display panel without damaging the surface of the display panel. Several through holes are also provided on the vacuum adsorption platform 31. The through holes are circular and their diameter is adapted to the adjustment end of the alignment adjustment device 15, allowing the adjustment end of the alignment adjustment device 15 of the adjustment component to extend out. The size of the through holes is slightly larger than the adjustment end, so as not to affect the up-down and left-right micro-movement of the adjustment end of the adjustment component, ensuring that the alignment adjustment device 15 can normally realize the micro-adjustment function.

[0030] Please see Figures 1-4 The adjustment component is used to provide stable support and fine-tune the position of the vacuum adsorption component, compensate for processing and installation errors, and ensure the positioning accuracy of the display panel. The component includes a support adjustment device 14 and an alignment adjustment device 15, both of which are equidistantly arranged between the support plate 13 and the vacuum adsorption table 31, and work together to achieve stable support and precise fine-tuning of the vacuum adsorption table 31. The support adjustment device 14 uses high-precision support pins, with 4 or 8 pins evenly spaced and located at the four corners or the two sides of the dead corners of the vacuum adsorption table 31. These pins are used to provide stable support for the vacuum adsorption table 31, ensuring its horizontal orientation and preventing deformation or tilting. The height of the support adjustment device 14 is finely adjustable for preliminary calibration of the levelness of the vacuum adsorption table 31.

[0031] The alignment adjustment device 15 uses multi-axis fine-tuning knobs (or can be electrically operated, such as by using push rods and guide rails for adjustment), with 3-4 knobs evenly spaced, each corresponding to a through hole on the vacuum adsorption table 31. The adjustment end of the alignment adjustment device 15 extends out of the through hole on the vacuum adsorption table 31. The operator can rotate the fine-tuning knob to make fine adjustments to the vacuum adsorption table 31 in the up-down and left-right directions. The fine-tuning accuracy can reach ±0.005mm, which can accurately compensate for processing and installation errors, achieve precise alignment of the display panel, and ensure precise docking of the probes and the display panel pads.

[0032] Work process Device initialization: First, check the installation of each component to ensure that the base 11 and the mounting plate 12 are firmly connected without looseness or deformation; check that the motor 21, screw 22, and moving plate 23 of the horizontal drive component are operating normally, the motor 21 has a precise speed, the screw 22 rotates smoothly, the moving plate 23 moves horizontally smoothly, and the horizontal limit guide rail 24 and the horizontal limit slider 25 slide well together; check that the mounting frame 16 and the lifting frame 17 of the lifting guide component are installed in place, the vertical plate is firmly connected to the mounting plate 12, the L-shaped connector is tightly spliced, there is no gap between the vertical plate and the lifting limit guide rail 41, the lifting frame 17 and the mounting frame 16 cooperate smoothly, and the lifting frame 17 lifts and lowers smoothly without tilting or offset; check that the vacuum adsorption table 31 is undamaged, the adsorption hole 32 is not blocked, and the support adjustment device 14 and the alignment adjustment device 15 of the adjustment component are flexible.

[0033] Display panel placement and initial positioning: The operator places the display panel to be tested on the vacuum adsorption platform 31. The smooth surface of the vacuum adsorption platform 31 can avoid scratching the display panel. The external negative pressure air source is activated, and the negative pressure is transmitted to the adsorption holes 32 through the air passage. The adsorption holes 32 generate a uniform and stable adsorption force, which firmly adsorbs the display panel on the vacuum adsorption platform 31 and prevents the display panel from shifting. At this time, the support adjustment device 14 provides stable support for the vacuum adsorption platform 31, ensuring that the vacuum adsorption platform 31 is in an initial horizontal state, preparing for subsequent fine-tuning and lifting. Display panel height adjustment: Based on the display panel detection requirements, the control system starts the motor 21 of the horizontal drive component. The motor 21 drives the screw 22 to rotate. The screw 22 is threadedly engaged with the moving plate 23, causing the moving plate 23 to move horizontally along the horizontal limit guide rail 24. The moving plate 23 drives the lower inclined block 26 to move horizontally synchronously. Since the inclined surfaces of the lower inclined block 26 and the upper inclined block 27 cooperate with each other, and the moving guide rail 28 and the moving guide block 29 slide and guide each other, the upper inclined block 27 slides up or down along the inclined surface as the lower inclined block 26 moves horizontally, thereby driving the lifting plate. 18. Vertical lifting; the lifting plate 18 drives the support plate 13 to lift synchronously, and the support plate 13 drives the vacuum adsorption component, adjustment component and display panel to lift together. At the same time, the lifting frame 17 of the lifting guide component slides vertically along the lifting limit guide rail 41. The mounting frame 16 offsets the outward tension generated during the lifting process through the L-shaped connector, so the force is uniform and the structure is stable. It plays a precise limiting and guiding role in the lifting of the lifting frame 17, ensuring that the support plate 13 lifts smoothly without tilting or deflection, until the display panel rises to the preset detection height, the motor 21 is turned off, and the support plate 13 stops lifting. Precise alignment of the display panel: After the display panel is raised to the preset height, the visual positioning system of the display panel detection equipment detects the positional deviation of the display panel. If there is a deviation, the operator makes fine adjustments by adjusting the alignment adjustment device 15 of the adjustment component: Rotating the fine adjustment knob of the alignment adjustment device 15 causes the adjustment end to move the vacuum adsorption stage 31 slightly up and down and left and right until the display panel is accurately positioned, ensuring that the probe and the display panel pads are precisely connected. During the fine adjustment process, the support adjustment device 14 always provides stable support for the vacuum adsorption stage 31 to prevent the vacuum adsorption stage 31 from tilting or deforming. At the same time, the vacuum adsorption component continues to adsorb the display panel to prevent the display panel from shifting.

[0034] Testing and Reset: After alignment, the display panel testing equipment is started to test the electrical performance of the display panel. During the testing process, all components remain stable. The vacuum adsorption component continuously generates adsorption force to ensure that the display panel is firmly positioned. The lifting guide component and the wedge lifting component remain stationary. The mounting frame 16 always maintains structural stability and uniform force to ensure that the height and posture of the support plate 13 and the display panel are stable. The support adjustment device 14 and the alignment adjustment device 15 of the adjustment component remain locked to prevent the vacuum adsorption platform 31 from shifting. After the test is completed, the testing equipment stops working, the negative pressure air source is turned off, and the adsorption force of the vacuum adsorption table 31 disappears. The control system starts the motor 21, which rotates in reverse, driving the screw 22, the moving plate 23, and the lower inclined block 26 to move horizontally in the opposite direction. The upper inclined block 27 slides down the inclined plane, driving the lifting plate 18, the support plate 13, the vacuum adsorption assembly, the adjustment assembly, and the display panel to descend together until the support plate 13 descends to the initial position, and the motor 21 is turned off. The operator removes the display panel that has been tested, completing one testing operation. The device is then reset, waiting for the next batch of display panels to be tested.

[0035] It should be understood that the above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. It should not be considered that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A display panel adjustment platform for a display panel testing device, characterized in that, Includes a base (11), a mounting plate (12), a horizontal drive assembly, a wedge lifting assembly, a lifting guide assembly, a tray (13), a vacuum adsorption assembly, and an adjustment assembly; The mounting plate (12) is fixedly mounted on the base (11) to form the mounting base of the adjustment platform; The horizontal drive assembly is mounted on the mounting plate (12) and is used to provide horizontal driving power; The inclined wedge lifting assembly is connected to the horizontal drive assembly in a transmission manner, which converts the horizontal linear motion into the vertical lifting motion. The lifting guide assembly is mounted on the mounting plate (12), and its output end is connected to the tray (13) to provide guidance for the lifting movement of the tray (13) and ensure the smoothness of lifting. The pallet (13) is connected to the output ends of both the wedge lifting assembly and the lifting guide assembly, and moves vertically up and down as driven by the wedge lifting assembly. The vacuum adsorption component is disposed on the tray (13) and is used to perform negative pressure adsorption positioning on the display panel to prevent the display panel from shifting. The adjustment component is located between the tray (13) and the vacuum adsorption component, and is used to support the vacuum adsorption component and fine-tune its position to ensure the positioning accuracy of the display panel.

2. The display panel adjustment platform for a display panel testing device according to claim 1, characterized in that, The horizontal drive assembly includes a motor (21), a screw (22), a moving plate (23), a horizontal limiting guide rail (24), and a horizontal limiting slider (25); the motor (21) is fixedly installed on the mounting plate (12), the screw (22) is connected to the output end of the motor (21) for transmission, and the moving plate (23) is threadedly engaged with the screw (22) to achieve horizontal movement as the screw (22) rotates; The horizontal limiting guide rail (24) is fixedly mounted on the mounting plate (12), and the horizontal limiting slider (25) is fixedly mounted on the bottom of the moving plate (23) and slides in cooperation with the horizontal limiting guide rail (24), which plays a limiting and guiding role in the horizontal movement of the moving plate (23); the lower inclined block (26) of the inclined wedge lifting assembly is fixedly mounted on the moving plate (23).

3. The display panel adjustment platform for a display panel testing device according to claim 2, characterized in that, The inclined wedge lifting assembly includes a lower inclined block (26), an upper inclined block (27), a moving guide rail (28), a moving guide block (29), and a lifting plate (18); the lower inclined block (26) is fixedly mounted on the moving plate (23) of the horizontal drive assembly, and the upper inclined block (27) is correspondingly mounted on the inclined surface of the lower inclined block (26); The movable guide rail (28) is fixedly set on the inclined surface of the lower inclined block (26), and the movable guide block (29) is fixedly set on the bottom of the upper inclined block (27) and slides in cooperation with the movable guide rail (28) to ensure that the upper inclined block (27) slides smoothly along the inclined surface; The top of the upper inclined block (27) is fixedly provided with a lifting plate (18), which is fixedly connected to the support plate (13) and drives the support plate (13) to rise and fall synchronously; the lower inclined block (26) and the upper inclined block (27) are formed by splitting a rectangular block and splicing them together to form an integrated structure.

4. The display panel adjustment platform for a display panel testing device according to claim 3, characterized in that, The lifting guide assembly includes a mounting frame (16), a lifting frame (17), a lifting limit guide rail (41), and a lifting limit slider (42); the mounting frame (16) is fixedly mounted on the mounting plate (12), and the lifting limit guide rail (41) is fixedly mounted on the inner side wall of the mounting frame (16) and arranged in the vertical direction; The lifting limit slider (42) is fixedly installed on the outer wall of the lifting frame (17) and slides in cooperation with the lifting limit guide rail (41), which plays a limiting and guiding role in the lifting of the lifting frame (17); the top of the lifting frame (17) is fixedly connected to the support plate (13), which drives the support plate (13) to rise and fall smoothly.

5. The display panel adjustment platform for a display panel testing device according to claim 4, characterized in that, The vacuum adsorption assembly includes a vacuum adsorption platform (31) and adsorption holes (32); the vacuum adsorption platform (31) is disposed above the tray (13), and the adsorption holes (32) are equidistantly opened on the vacuum adsorption platform (31). The adsorption holes (32) are connected to an external negative pressure air source and are used to perform negative pressure adsorption positioning on the display panel; the vacuum adsorption platform (31) is also provided with through holes for the adjustment end of the adjustment assembly to extend out, without affecting the up-down and left-right micro-movement of the adjustment end of the adjustment assembly.

6. The display panel adjustment platform for the display panel detection device according to claim 1 or 5, characterized in that, The adjustment assembly includes a support adjustment device (14) and an alignment adjustment device (15); the support adjustment device (14) and the alignment adjustment device (15) are equidistantly arranged between the tray (13) and the vacuum adsorption table (31); the support adjustment device (14) is used to stably support the vacuum adsorption table (31), and the adjustment end of the alignment adjustment device (15) extends out of the through hole on the vacuum adsorption table (31) to make micro-movement adjustment of the vacuum adsorption table (31) in the up and down and left and right directions, so as to achieve precise alignment of the display panel.

7. The display panel adjustment platform for the display panel detection device according to claim 2, characterized in that, The motor (21) is a servo motor or a stepper motor, the screw (22) is a ball screw, and the moving plate (23) is a screw nut seat adapted to the ball screw. High-precision linear motion in the horizontal direction is achieved through ball screw transmission.

8. The display panel adjustment platform for the display panel testing device according to claim 3, characterized in that, The inclined angle of the lower inclined block (26) is the same as that of the upper inclined block (27), and the moving guide rail (28) is arranged along the inclined direction to ensure that the upper inclined block (27) moves smoothly and accurately with the horizontal movement of the lower inclined block (26).

9. The display panel adjustment platform for the display panel detection device according to claim 4, characterized in that, The mounting frame (16) is a rectangular frame structure, the lifting frame (17) is a rectangular frame adapted to the mounting frame (16), and the lifting limit guide rail (41) is arranged in the vertical direction to provide stable guidance for the vertical lifting movement of the lifting frame (17).

10. The display panel adjustment platform for the display panel detection device according to claim 5, characterized in that, The adsorption holes (32) are evenly distributed in a matrix on the vacuum adsorption platform (31) to ensure that the display panel is evenly adsorbed and stably positioned.

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