An electrofluidic repair system for a display panel

Abstract

This application relates to an electrohydraulic repair system for a display panel, comprising a machine base and mounted on the machine base: a printing device, which includes a printing frame, a printing line module, a first visual calibration element, and at least one set of repair components. The first visual calibration element is used to capture a first calibration point on the substrate, and the repair components are used to print functional liquid at the defect points on the substrate; a position calibration device, which is spaced apart from the printing device in a second direction, and includes a detection frame, a second visual calibration element, and a detection line module. The second visual calibration element is used to capture a second calibration point on the substrate; and a conveying device, which sequentially conveys the substrate below the second visual calibration element and the first visual calibration element. This application optimizes the processing cycle of substrate repair by using the first and second visual calibration elements to determine the substrate position during substrate conveying, combining the positioning substrate and the conveying substrate, thereby significantly improving the substrate repair efficiency.

Description

Technical Field

[0001] This application relates to the field of electro-hydraulic repair technology, and in particular to an electro-hydraulic repair system for a display panel. Background Technology

[0002] MicroLED (micro-light-emitting diode) display devices are widely used due to their advantages such as small size, low power consumption, high brightness, high color saturation, fast response, and long lifespan. To improve the yield of MicroLED display devices, the current manufacturing process involves precise addressing detection and repair of the LED chips after transfer, eliminating any non-displayable chips and thus improving the overall yield.

[0003] In related technologies, the defect type is determined to be either a silver paste defect or an insulating adhesive defect. After removing the defective point using a laser, the required functional liquid is printed onto the corresponding pad. The printing device is moved to the defect location, and the silver paste or insulating adhesive is printed onto the defect location to achieve repair.

[0004] The defective substrate undergoes upstream inspection to determine the location of the defective points. Before repair, the defective substrate is placed on the repair platform and then... Figure 16 By capturing the first calibration point A1 and the second calibration point A2 on the substrate to determine its position, the locations of all defect points on the substrate can be determined. The first calibration point A1 and the second calibration point A2 are located at two opposite corners of the substrate surface. After determining the position of the substrate, the printing device is moved sequentially to the defect points on the substrate to repair them.

[0005] However, substrate repair requires positioning the substrate first, and the positioning process requires moving the substrate or camera multiple times, resulting in slow substrate positioning efficiency. In addition, after the substrate is positioned, the camera used to mark the substrate position needs to be removed, and then the printing device needs to be moved above the substrate. In each substrate repair process, the camera used to mark the substrate position needs to be moved back and forth multiple times, and the printing device needs to be moved above the substrate after the substrate is marked. The entire substrate repair process has a poor processing cycle, which seriously affects the substrate repair efficiency. Summary of the Invention

[0006] This application provides an electrochemical repair system for a display panel to solve the technical problem in the related art where the processing cycle of the substrate repair process is poor, which seriously affects the repair efficiency of the substrate.

[0007] A fluid repair system for a display panel includes a machine base and a device mounted on the machine base:

[0008] A printing device includes a printing frame, a printing line module, a mounting frame, a first visual calibration component, and at least one set of repair components. The printing line module drives the mounting frame to move along a first direction on the printing frame. The first visual calibration component and the repair components are both mounted on the mounting frame. The first visual calibration component is used to capture a first calibration point on the substrate, and the repair components are used to print functional liquid at the defect points on the substrate.

[0009] A position calibration device and a printing device are spaced apart in a second direction. The position calibration device includes a detection frame, a second visual calibration component, and a detection line module. The detection line module drives the second visual calibration component to move along the first direction on the detection frame. The second visual calibration component is used to capture a second calibration point on the substrate.

[0010] A conveying device is used to carry the substrate and drive the substrate to move in the second direction, wherein the substrate is sequentially delivered to the area below the second visual calibration member and the first visual calibration member.

[0011] In some embodiments, the position calibration device further includes a barcode scanner connected to the drive end of the detection linear module, and the barcode scanner is used to capture the identification code on the substrate to obtain the distribution information of all defect points on the substrate.

[0012] In some embodiments, the repair component includes:

[0013] A three-axis motion mechanism is mounted on the mounting frame;

[0014] An electric fluid nozzle is provided, which is vertically arranged and mounted on the drive end of the three-axis motion mechanism so that the three-axis motion mechanism can drive the electric fluid nozzle to move up and down, left and right, and forward and backward.

[0015] A real-time visual imaging device is located on one side of the electro-hydraulic nozzle and mounted on the mounting bracket. The imaging direction of the real-time visual imaging device is tilted to the horizontal plane, and the real-time visual imaging device is aligned with the landing position of the droplets ejected from the electro-hydraulic nozzle.

[0016] In some embodiments, the repair assembly further includes a mounting base mounted on the drive end of the three-axis motion mechanism. The mounting base has a mounting groove on its side, and the electro-hydraulic nozzle is mounted in the mounting groove, with the spraying end of the electro-hydraulic nozzle extending below the mounting base.

[0017] In some embodiments, the electro-hydraulic nozzle includes:

[0018] The main body is made of conductive material and is used for electrical connection with an external power supply device. The main body is installed in the mounting groove.

[0019] The needle body is connected to the main body and is made of insulating material. The needle body is located below the mounting base.

[0020] An electrode assembly is disposed between the main body and the needle body, with one end of the electrode assembly extending to the nozzle of the needle body, and the electrode assembly is electrically connected to the main body.

[0021] In some embodiments, the electro-hydraulic nozzle further includes a positioning block, which is made of conductive material and is sleeved on the main body and electrically connected to the main body.

[0022] The repair component also includes a power supply component, which is installed at the bottom of the mounting slot. The positioning block abuts against the power supply component to be electrically connected to it. The power supply component is used to be electrically connected to an external power supply device.

[0023] In some embodiments, the power supply includes:

[0024] A magnetic adsorption element, wherein the magnetic adsorption element is adapted to adsorb the positioning block;

[0025] An electrode ring is abutted against the positioning block for electrical connection.

[0026] In some embodiments, the repair component further includes a positioning sleeve made of metal, the positioning sleeve having an opening on its circumferential side to allow the main body to enter the positioning sleeve from the side of the positioning sleeve;

[0027] The positioning sleeve is embedded in the mounting groove, and the bottom surface of the positioning block is in contact with the top surface of the positioning sleeve.

[0028] In some embodiments, the printing apparatus further includes a vision inspection component, which includes a high-magnification camera mounted on the mounting bracket. The high-magnification camera and the electro-hydraulic nozzle are arranged at a distance in the first direction, and the imaging direction of the high-magnification camera is vertically set to perform imaging inspection on the printed droplets.

[0029] In some embodiments, the electrochemical repair system for the display panel further includes a maintenance device, the maintenance device comprising:

[0030] A cleaning assembly, comprising a cleaning tank and an ultrasonic unit, wherein the cleaning tank is filled with cleaning fluid and the ultrasonic unit is installed inside the cleaning tank;

[0031] At least one set of air knife assemblies and multiple sets of air knife assemblies are arranged around the periphery of the cleaning tank. The air knife assembly includes a blower frame and a blower head. The blower head is mounted on the blower frame and is higher than the cleaning tank. The blower head blows air towards the spray point of the repair assembly for cleaning.

[0032] A height visual calibration element images the spray point of the repair component and determines the height of the spray nozzle of the repair component.

[0033] The beneficial effects of the technical solution provided in this application include:

[0034] This application provides an electrochemical repair system for a display panel. During substrate repair, a conveying device moves the substrate in a second direction, and the substrate sequentially passes through a position calibration device and a printing device. A printing linear module moves a first visual calibration component above the movement path of a first calibration point on the substrate, and a detection linear module moves a second visual calibration component above the movement path of a second calibration point on the substrate. As the substrate is conveyed in the second direction, the first calibration point near the front end of the substrate is captured by the first visual calibration component, and subsequently, the second calibration point near the rear end of the substrate is captured by the second visual calibration component, thus achieving substrate positioning. During substrate positioning, there is no need to repeatedly move the camera to capture the first and second calibration points on the substrate; while the substrate is positioned, it is simultaneously conveyed to the printing device, combining the positioning substrate and the conveying substrate, optimizing the processing cycle of substrate repair, and greatly improving the substrate repair efficiency.

[0035] Furthermore, after the substrate is positioned, it is already below the repair components of the printing device. At this point, the position of the substrate relative to the repair components in the second direction is adjusted by the conveying device, and the position of the repair components relative to the substrate in the first direction is adjusted by the printing linear module. This allows the repair components to be sequentially aligned with the defect points on the substrate, thus achieving repair. Therefore, during repair, it is not necessary to move the calibrated cameras one by one or move the printing device to the substrate position. As a result, the substrate repair process has a more reasonable cycle time and higher repair efficiency. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 An external schematic diagram of the electrohydraulic repair system for a display panel provided in an embodiment of this application;

[0038] Figure 2 This is a schematic diagram of the internal structure of the electro-hydraulic repair system for the display panel provided in an embodiment of this application;

[0039] Figure 3 A schematic diagram of the internal structure of the electrohydraulic repair system for the display panel provided in this application embodiment;

[0040] Figure 4 A partial schematic diagram of the printing apparatus provided in the embodiments of this application;

[0041] Figure 5 A schematic diagram of the repair component provided in an embodiment of this application;

[0042] Figure 6 A partial schematic diagram of the repair component provided in the embodiments of this application;

[0043] Figure 7 A partial exploded view of the repair component provided in the embodiments of this application;

[0044] Figure 8 This is a schematic diagram illustrating the installation of the mounting base and the electro-hydraulic nozzle provided in the embodiments of this application;

[0045] Figure 9 This is a schematic diagram showing the state in which the limiting plate does not obstruct the mounting groove, as provided in the embodiments of this application.

[0046] Figure 10 A schematic diagram of a power supply component provided in an embodiment of this application;

[0047] Figure 11 An exploded view of the electro-hydraulic nozzle provided in the embodiments of this application;

[0048] Figure 12 This is a schematic diagram of the internal structure of the electro-hydraulic nozzle provided in the embodiments of this application;

[0049] Figure 13 A schematic diagram of the maintenance device provided in the embodiments of this application;

[0050] Figure 14 This is a schematic diagram of the air knife assembly in operation according to an embodiment of this application;

[0051] Figure 15 A schematic diagram of the height visual calibration component provided in the embodiments of this application during operation;

[0052] Figure 16 This is a schematic diagram of the substrate.

[0053] In the diagram: 1. Machine base; 2. Printing device; 21. Printer frame; 22. Linear printing module; 23. Mounting frame; 24. First vision calibration component; 25. Repair component; 251. Three-axis motion mechanism; 252. Electromagnetic nozzle; 2521. Main body; 2522. Needle body; 2523. Electrode assembly; 2523a. Electrode seat; 2523b. Electrode wire; 2524. Elastic component; 2525. Positioning block; 253. Real-time vision imaging component; 254. Mounting base; 254a. Mounting slot; 254b. Wiring hole; 255. Power supply component; 2551. Magnetic adsorption component; 2552. Electrode ring; 256. Positioning sleeve; 257. Limiting component; 2571. Limiting plate; 2572. Limiting screw; 26. Base; 27. Printing lift 28. Lowering drive component; 29. ​​Vision inspection component; 3. Distance measuring component; 30. Position calibration device; 31. Inspection frame; 32. Second vision calibration component; 33. Inspection linear module; 34. Inspection lifting drive component; 35. Barcode scanner; 4. Conveying device; 41. Conveying linear module; 42. Support platform; 5. Maintenance device; 51. Cleaning component; 511. Cleaning tank; 512. Ultrasonic unit; 513. Liquid supply component; 5131. Liquid supply tank; 5132. Liquid supply pump; 514. Liquid extraction component; 5141. Waste liquid tank; 5142. Waste liquid pump; 52. Air knife component; 521. Air blower frame; 522. Air blower head; 53. Height vision calibration component; 6. Static elimination device; 7. Sealed box; A. Base plate; A1. First calibration point; A2. Second calibration point. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0055] This application provides an electrochemical repair system for display panels. During substrate transport, a first visual calibration component and a second visual calibration component are used to determine the substrate position. Once the substrate position is determined, it is in the printing repair position. By combining the positioning substrate and the transport substrate, the processing cycle time for substrate repair is optimized, significantly improving the repair efficiency. This application solves the technical problem in related technologies where the processing cycle time during substrate repair is poor, severely affecting the repair efficiency.

[0056] Reference Figure 1-Figure 5A current-current repair system for a display panel includes a machine base 1 and a printing device 2, a position calibration device 3, and a conveying device 4 mounted on the machine base 1. Further, the current-current repair system for the display panel also includes a sealed chamber 7 and an atmosphere control system. The machine base 1, printing device 2, position calibration device 3, and conveying device 4 are all located inside the sealed chamber 7, and the atmosphere control system is connected to the sealed chamber 7 to ensure that the atmosphere environment inside the sealed chamber 7 is the processing atmosphere environment, guaranteeing the normal operation of the printing repair.

[0057] Reference Figure 1-Figure 5 Substrate A is sequentially conveyed to position calibration device 3 and printing device 2 via conveying device 4. Position calibration device 3 and printing device 2 capture the first calibration point A1 and the second calibration point A2 on substrate A to determine the position of substrate A. Simultaneously, substrate A moves to printing device 2, where printing device 2 can directly perform printing repair on substrate A. By combining positioning substrate A and conveying substrate A, the processing cycle of substrate A repair is optimized, greatly improving the repair efficiency of substrate A.

[0058] Reference Figure 16 The substrate A has a first calibration point A1 and a second calibration point A2 on its surface. The first calibration point A1 and the second calibration point A2 are located near opposite edges of the substrate A surface, and both are positioned near corners of the substrate A surface. In this embodiment, the first calibration point A1 and the second calibration point A2 are located at opposite corners of the substrate A surface. It should be noted that, in the substrate A transport direction, the calibration point closer to the front end of the substrate A is the first calibration point A1, and the calibration point closer to the rear end of the substrate A is the second calibration point A2.

[0059] Reference Figures 2-5 The printing device 2 includes a printing frame 21, a linear printing module 22, a mounting frame 23, a first visual calibration component 24, and at least one set of repair components 25. The first visual calibration component 24 and the repair components 25 are both mounted on the mounting frame 23, which is slidably disposed on the printing frame 21 along a first direction. The printing frame 21 is gantry-shaped and is mounted on a machine base 1. The mounting frame 23, along with the first visual calibration component 24 and the repair components 25 on it, are located above the machine base 1. The linear printing module 22 is mounted on the printing frame 21 and drives the mounting frame 23 to move along the first direction on the printing frame 21. In this embodiment, for ease of understanding, the first direction is the X-axis direction in the figure. The linear printing module 22 includes a linear motor or a lead screw mechanism.

[0060] Reference Figures 2-5Both the first visual calibration element 24 and the repair component 25 are driven together by the printing linear module 22 to move in a first direction. The first visual calibration element 24 is used to capture a first calibration point A1 on the substrate A. The repair component 25 is used to print the functional liquid required for repair at the defect location on the substrate A. The functional liquid includes silver paste or insulating adhesive. In this embodiment, the first visual calibration element 24 includes a camera.

[0061] With this configuration, the first visual calibration component 24 is moved in the first direction by the printing linear module 22 to capture the first calibration point A1 on the substrate A.

[0062] Reference Figures 2-5 Furthermore, the printing device 2 also includes a base 26 and a printing lifting drive 27. The base 26 is slidably disposed on the printing frame 21 along a first direction. The printing linear module 22 is drivenly connected to the base 26 to drive the base 26 to slide in the first direction. The printing lifting drive 27 is mounted on the base 26, and the mounting bracket 23 is mounted on the driving end of the printing lifting drive 27. Thus, the printing linear module 22 can drive the mounting bracket 23, the first visual calibration component 24, and the repair component 25 to move in the first direction, and the printing lifting drive 27 can drive the mounting bracket 23, the first visual calibration component 24, and the repair component 25 to move vertically. In this embodiment, the printing lifting drive 27 includes a linear motor or a lead screw mechanism.

[0063] This configuration, utilizing the printing lifting drive 27 to adjust the height of the mounting bracket 23, allows for two main adjustments. First, it adjusts the distance between the repair component 25 and the substrate A on the machine base 1, enabling printing height adjustment. Furthermore, by moving the repair component 25 and the first visual calibration component 24 upwards, collisions and damage during their movement are avoided. Second, changing the height of the first visual calibration component 24 alters its imaging focal plane, ensuring it can capture the first calibration point A1. The first visual calibration component 24 can employ a fixed-focus lens, thus saving costs while maintaining imaging quality.

[0064] Reference Figures 2-5 In this embodiment, the position calibration device 3 and the printing device 2 are spaced apart in the second direction. The conveying device 4 drives the substrate A to move in the second direction, so as to sequentially deliver the substrate A to the position calibration device 3 and the printing device 2. In this embodiment, for ease of understanding, the second direction is the Y-axis direction in the figure.

[0065] Reference Figures 2-5The position calibration device 3 includes a detection frame 31, a second visual calibration element 32, and a detection line module 33. The detection frame 31 is gantry-shaped and is mounted on the machine base 1. The second visual calibration element 32 is slidably disposed on the detection frame 31 along a first direction. The detection line module 33 is mounted on the detection frame 31 and drives the second visual calibration element 32 to move in the first direction. The second visual calibration element 32 is used to capture a second calibration point A2 on the substrate A. In this embodiment, the second visual calibration element 32 includes a camera.

[0066] Furthermore, the position calibration device 3 also includes a detection lifting drive 34, which is slidably mounted on the detection frame 31 and driven by the detection linear module 33 to move along the first direction on the detection frame 31. A second visual calibration component 32 is mounted on the drive end of the detection lifting drive 34 and is driven by the detection lifting drive 34 to move up and down. This allows the second visual calibration component 32 to move along the first direction and also in the vertical direction.

[0067] This configuration, using the detection lifting drive 34 to adjust the height of the second visual calibration component 32, avoids collisions and damage during the movement of the second visual calibration component 32. Furthermore, by changing the height of the second visual calibration component 32, its imaging focal plane can be altered, ensuring that the second visual calibration component 32 can capture the second calibration point A2. The second visual calibration component 32 can utilize a fixed-focus lens, thus saving costs while maintaining imaging quality.

[0068] Reference Figure 16 In this application, since the first calibration point A1 and the second calibration point A2 of the substrate A are located at two opposite corners of the surface of the substrate A, the first calibration point A1 and the second calibration point A2 are spaced apart in the first direction.

[0069] By arranging the first visual calibration element 24 and the second visual calibration element 32, and by pre-moving the first visual calibration element 24 to the first calibration point A1 on the movement path in the second direction, and pre-positioning the second visual calibration element 32 to the second calibration point A2 on the movement path in the second direction, the first calibration point A1 and the second calibration point A2 can be captured quickly and accurately during the transport of the substrate A along the second direction. This eliminates the need to repeatedly move the camera to capture the calibration points, thus improving the efficiency of substrate A positioning and transport.

[0070] After substrate A is positioned, it is below the repair component 25 of the printing device 2. At this point, the position of substrate A relative to the repair component 25 in the second direction is adjusted by the conveying device 4, and the position of the repair component 25 relative to substrate A in the first direction is adjusted by the printing linear module 22. This allows the repair component 25 to be sequentially aligned with the defect points on substrate A, thus achieving repair. Therefore, during repair, it is not necessary to move the calibrated cameras one by one or move the printing device 2 to the position of substrate A. Consequently, the repair process of substrate A has a more reasonable cycle time and higher repair efficiency.

[0071] Reference Figures 2-5 The conveying device 4 includes a conveying linear module 41 and a carrier platform 42. The carrier platform 42 is slidably disposed on the machine base 1 along a second direction, and is adapted to pass under the printing frame 21 and the inspection frame 31, so that the carrier platform 42 and the substrate A pass under the first visual calibration member 24 and the second visual calibration member 32. The conveying linear module 41 is mounted on the machine base 1 and drives the carrier platform 42 to move in the second direction. In this embodiment, the conveying linear module 41 includes a linear motor or a lead screw mechanism.

[0072] Furthermore, the surface of the support platform 42 has an adsorption structure, which is connected to an external negative pressure device. After the substrate A is placed on the support platform 42, the adsorption structure adsorbs and fixes the substrate A, thus preventing the substrate A from shaking during transportation and repair. In this embodiment, the adsorption structure includes an adsorption hole group.

[0073] Reference Figure 3 Furthermore, the position calibration device 3 also includes a barcode scanner 35, which is connected to the drive end of the detection linear module 33. In this embodiment, the barcode scanner 35 is installed on the drive end of the detection lifting drive 34. The barcode scanner 35 is used to capture the identification code A3 on the substrate A to obtain the distribution information of all defect points on the substrate A. The identification code A3 includes a QR code or a barcode.

[0074] With this setup, by scanning the identification code A3 with the barcode scanner 35, the location of all defect points on substrate A can be determined, and the defect type of each defect point on substrate A can be determined, which facilitates subsequent direct point-to-point repair of different defect points.

[0075] The repair component 25 is adapted to print functional liquid at the defect location. In this embodiment, the repair component 25 prints silver paste or insulating adhesive as needed to repair the corresponding defect location. If the defect location is a solder pad defect, silver paste is printed; if the defect location is an encapsulation defect, insulating adhesive is printed.

[0076] Reference Figures 2-5In this embodiment, multiple sets of repair components 25 are provided, and these multiple sets of repair components 25 are installed at intervals on the mounting frame 23. Different repair components 25 can print the same or different functional liquids, enabling simultaneous repair of different defect points, or simultaneous repair of the same defect point, thus improving repair efficiency. Preferably, two sets of repair components 25 are provided to accommodate the simultaneous printing of two different functional liquids, and also to reduce the load on the mounting frame 23.

[0077] Reference Figures 4-7 The repair component 25 includes a three-axis motion mechanism 251, an electro-hydraulic nozzle 252, and a real-time visual imaging element 253. The three-axis motion mechanism 251 is mounted on a mounting bracket 23. The electro-hydraulic nozzle 252 is vertically positioned and mounted on the drive end of the three-axis motion mechanism 251, allowing the three-axis motion mechanism 251 to drive the electro-hydraulic nozzle 252 to move up and down, left and right, and forward and backward. In this embodiment, the three-axis motion mechanism 251 is assembled from three linear modules with mutually perpendicular driving directions. Specifically, the linear modules include lead screw mechanisms or linear motors.

[0078] This setup, based on the location of the defect, primarily utilizes the conveyor device 4 to move the substrate A and the printing linear module 22 to move the repair component 25, thereby adjusting the relative position of the repair component 25 and the substrate A. The three-axis motion mechanism 251 fine-tunes and moves the current-current nozzle 252 to directly above the designated pad, adjusting the printing height. Finally, the current-current nozzle 252 prints the corresponding functional liquid onto the defect location. Because the current-current nozzle 252 is vertically positioned, the electric field force is aligned with the direction of the functional liquid ejection. The droplets ejected from the current-current nozzle 252 fall onto the pad in a straight line, making the droplets less susceptible to horizontal forces. This reduces the possibility of horizontal movement during the droplet's descent, improves the accuracy of the droplet landing point, ensures the droplets are printed onto the corresponding pad, and guarantees the repair effect.

[0079] Reference Figures 4-7 The real-time visual imaging element 253 is located on one side of the electro-hydraulic nozzle 252 and mounted on the mounting bracket 23. The imaging direction of the real-time visual imaging element 253 is tilted to the horizontal plane, and the real-time visual imaging element 253 is aligned with the landing position of the droplets ejected from the electro-hydraulic nozzle 252. The real-time visual imaging element 253 includes a camera. The real-time visual imaging element 253 is used to image the droplets printed onto the defect points and determine whether they have landed in the corresponding positions.

[0080] Because the real-time vision imaging device 253 is tilted and does not view the droplet directly, but because the droplet spreads out into an approximately circular shape after falling onto the pad, the front view of the droplet can be calculated by the tilt angle of the imaging direction of the real-time vision imaging device 253 and the imaging pattern of the droplet, so as to determine in real time whether the size of the printed droplet is up to standard.

[0081] With this setup, since the real-time visual imaging component 253 is installed at an angle, it does not interfere with the vertical installation position of the electro-hydraulic nozzle 252. Furthermore, the real-time visual imaging component 253 can still image the droplets falling onto the defect location, thereby ensuring that the droplets fall onto the defect location through imaging and improving the reliability of the repair.

[0082] The repair component 25 also includes a first supplementary light that cooperates with the real-time visual imaging element 253. The first supplementary light is mounted on the mounting bracket 23, and the first supplementary light and the real-time visual imaging element 253 are located on opposite sides of the electro-hydraulic nozzle 252. The first supplementary light provides supplementary illumination to the imaging position of the real-time visual imaging element 253 to ensure the amount of light entering the real-time visual imaging element 253 and improve the imaging quality.

[0083] In this embodiment, the real-time visual imaging element 253 is fixed on the mounting bracket 23. In some embodiments, the mounting bracket 23 has multiple mounting positions for the real-time visual imaging element 253 to facilitate adjustment of its tilt angle. In some embodiments, the real-time visual imaging element 253 is slidably mounted on the mounting bracket 23 to adjust its tilt angle. This ensures high-quality real-time imaging of the droplet and avoids obstructing the mounting position of the electrohydrodynamic nozzle 252.

[0084] In this embodiment, the imaging direction of the real-time visual imaging element 253 forms an angle of 10-30 degrees with the horizontal plane. This ensures that the real-time imaging results of the droplet are usable and avoids the installation position of the electrohydrodynamic nozzle 252.

[0085] Reference Figures 4-7 The repair component 25 also includes a mounting base 254, which is mounted on the drive end of the three-axis motion mechanism 251. A mounting groove 254a is provided on the side of the mounting base 254, and the electro-hydraulic nozzle 252 is mounted within the mounting groove 254a. The mounting base 254 provides a mounting position for the electro-hydraulic nozzle 252, and the mounting groove 254a facilitates the positioning of the electro-hydraulic nozzle 252. The ejection end of the electro-hydraulic nozzle 252 extends below the mounting base 254 to ensure that the ejection end of the electro-hydraulic nozzle 252 is as close as possible to the substrate A, increasing the adjustment range of the printing height and preventing the mounting base 254 from interfering with the adjustment of the printing height.

[0086] Preferably, the mounting base 254 is made of insulating material. Since the current-current nozzle 252 requires an external voltage to generate an electric field, the insulating mounting base 254 avoids electric field crosstalk, which would affect the printing accuracy of the current-current nozzle 252.

[0087] Reference Figure 11 and Figure 12The electro-hydraulic nozzle 252 includes a main body 2521, a needle body 2522, and an electrode assembly 2523. The main body 2521 is made of conductive material and is used for electrical connection with an external power supply device. The main body 2521 is installed in the mounting groove 254a.

[0088] Reference Figure 11 and Figure 12 The needle body portion 2522 is connected to the main body portion 2521, and the needle body portion 2522 is made of insulating material. The needle body portion 2522 is located below the mounting base 254. Specifically, the needle body portion 2522 and the main body portion 2521 are inserted into each other to form a detachable connection between the needle body portion 2522 and the main body portion 2521, facilitating the replacement of the needle body portion 2522. In this embodiment, the needle body portion 2522 and the main body portion 2521 are connected by threads to improve the connection strength between the two.

[0089] Reference Figure 7 , Figure 8 , Figure 11 and Figure 12 The main body 2521 is located below the mounting base 254, thus avoiding interference from the mounting base 254 and being as close as possible to the solder pads. Due to the insulating design of the needle body 2522, the functional fluid after being energized will not cause electrochemical corrosion to the needle body 2522, thereby maintaining the shape of the needle body 2522, ensuring the consistency of multiple printings of the needle body 2522, ensuring controllable printing position, and ensuring printing accuracy.

[0090] Reference Figure 11 and Figure 12 The electrode assembly 2523 is disposed in the needle body portion 2522 and the main body portion 2521, and one end of the electrode assembly 2523 extends to the nozzle of the needle body portion 2522, and the electrode assembly 2523 is electrically connected to the main body portion 2521.

[0091] Reference Figure 11 and Figure 12 Specifically, the electrode assembly 2523 is located in the middle of the needle body portion 2522 and the main body portion 2521, that is, the center lines of the electrode assembly 2523, the needle body portion 2522, and the main body portion 2521 are aligned. Because the relative positions of the electrode assembly 2523, the needle body portion 2522, and the main body portion 2521 are aligned, the flight paths of the printed droplets are more consistent, improving printing consistency. Furthermore, the electrode assembly 2523 extends to the nozzle of the needle body portion 2522 to apply voltage at the nozzle. The electric field force is applied to the functional liquid closer to the ejection position, resulting in less crosstalk from the electric field force on the ejected droplets and improving printing accuracy.

[0092] Reference Figure 11 and Figure 12Specifically, the electrode assembly 2523 includes an electrode base 2523a and an electrode wire 2523b, with the electrode wire 2523b coaxially fixed to the electrode base 2523a. The electrode base 2523a is inserted into the top end of the needle body portion 2522, and the electrode wire 2523b passes through the needle body portion 2522, extending to the injection port of the needle body portion 2522. After the needle body portion 2522 is inserted and engaged with the main body portion 2521, the electrode base 2523a is partially located within the main body portion 2521 and is electrically connected to the main body portion 2521.

[0093] Reference Figure 11 and Figure 12 Furthermore, the electro-hydraulic nozzle 252 also includes an elastic element 2524. A mating hole is provided at the end of the main body 2521 through which the needle body 2522 passes. The elastic element 2524 is installed within the mating hole, with its two ends respectively abutting against the electrode seat 2523a and the bottom of the mating hole. As the main body 2521 and the needle body 2522 are inserted and mated, the elastic element 2524 presses against the electrode seat 2523a. The elastic element 2524 is made of a conductive material. In this embodiment, the elastic element 2524 includes a spring.

[0094] With this configuration, the elastic member 2524 not only presses against the electrode holder 2523a to fix its position, but also electrically connects the electrode holder 2523a and the main body 2521, making the electrical connection between the electrode assembly 2523 and the main body 2521 more stable, and ensuring a stable power supply to the electrode assembly 2523 through the main body 2521.

[0095] Reference Figures 6-9 Specifically, the electro-hydraulic nozzle 252 also includes a positioning block 2525, which is made of conductive material. The positioning block 2525 is sleeved on the main body 2521 and electrically connected to the main body 2521. The positioning block 2525 is sleeved on the outside of the main body 2521 and is electrically connected to an external power supply device so as to transmit voltage to the electrode assembly 2523 using the positioning block 2525 and the main body 2521.

[0096] Reference Figures 7-10 The repair component 25 also includes a power supply component 255, which is installed at the bottom of the mounting groove 254a. In this embodiment, the power supply component 255 is embedded in the bottom of the mounting groove 254a to save installation space. When installing the electro-hydraulic nozzle 252, the positioning block 2525 abuts against the power supply component 255 to be electrically connected to the power supply component 255. The power supply component 255 is used to be electrically connected to an external power supply device.

[0097] With this configuration, after the electro-hydraulic nozzle 252 is installed onto the mounting base 254, the positioning block 2525 abuts against the power supply component 255, thereby transmitting voltage to the electrode assembly 2523 and powering the electro-hydraulic nozzle 252. The integrated installation and power supply of the electro-hydraulic nozzle 252 simplify operation.

[0098] Reference Figures 7-10 Specifically, the power supply component 255 includes a magnetic adsorption component 2551 and an electrode ring 2552. The positioning block 2525 is made of a magnetically conductive material, and the magnetic adsorption component 2551 is adapted to adsorb the positioning block 2525. The electrode ring 2552 is sleeved on the magnetic adsorption component 2551, and the electrode ring 2552 abuts against the positioning block 2525 as the magnetic adsorption component 2551 adsorbs the positioning block 2525 to achieve electrical connection with the positioning block 2525.

[0099] With this configuration, after the electro-hydraulic nozzle 252 is installed on the mounting base 254, the magnetic adsorption component 2551 and the positioning block 2525 are magnetically connected, ensuring a stable electrical connection between the positioning block 2525 and the electrode ring 2552. Therefore, the voltage applied to the electro-hydraulic nozzle 252 is stable and less prone to voltage fluctuations due to the connection, thus ensuring a more stable electric field force applied to the functional fluid and improving printing consistency. The positioning and power supply operations of the electro-hydraulic nozzle 252 are performed simultaneously, which is convenient and quick, improving the efficiency of installing and removing the electro-hydraulic nozzle 252.

[0100] Reference Figures 7-10 Furthermore, a wiring hole 254b is provided on the side of the mounting base 254, which extends to the mounting position of the power supply component 255, so as to facilitate the electrical connection of the voltage line to the electrode ring 2552 through the wiring hole 254b, thereby facilitating the electrical connection between the external power supply device and the electrode ring 2552.

[0101] Reference Figures 7-10 The repair component 25 also includes a positioning sleeve 256, which is made of conductive metal. The positioning sleeve 256 has an opening on its circumferential side to allow the main body 2521 to enter the positioning sleeve 256 from the side. After the main body 2521 enters the positioning sleeve 256, its outer circumferential side surface adheres to the positioning sleeve 256.

[0102] Reference Figures 7-9Furthermore, the positioning sleeve 256 is embedded in the mounting groove 254a. The groove wall of the mounting groove 254a has a stepped surface, and the bottom surface of the positioning sleeve 256 abuts against the stepped surface, which also positions the positioning sleeve 256. After the main body 2521 enters the positioning sleeve 256, the positioning block 2525 is located above the positioning sleeve 256. By changing the positions of the positioning block 2525, the main body 2521, and the needle body 2522, the bottom surface of the positioning block 2525 is made to fit against the top surface of the positioning sleeve 256, thereby achieving the positioning and installation of the electrothermal nozzle 252. This ensures that the relative position of the electrothermal nozzle 252 and the mounting base 254 is consistent each time the electrothermal nozzle 252 is installed in the mounting groove 254a, thus saving time in calibrating the position of the electrothermal nozzle 252.

[0103] With this configuration, after the main body 2521 is installed onto the positioning sleeve 256, the positioning block 2525 and the positioning sleeve 256 are tightly fitted together, ensuring a stable voltage transfer from the positioning block 2525 to the main body 2521. Furthermore, the positioning sleeve 256 is made of metal, which has relatively weak deformation capacity. After the positioning block 2525 is pressed against the positioning sleeve 256, it is less likely to deform, thus ensuring the installation accuracy of the electro-hydraulic nozzle 252.

[0104] Furthermore, the corners of the positioning sleeve 256 are rounded. Since voltage is applied to the positioning sleeve 256 as well, the rounded corners reduce the likelihood of tip discharge, resulting in a more stable voltage at the current-voltage nozzle 252 and ensuring printing accuracy. Additionally, the rounded corners facilitate the installation of the positioning sleeve 256 into the mounting slot 254a.

[0105] Reference Figures 7-9 Optionally, the repair component 25 also includes a limiting component 257, which is used to press the electro-hydraulic nozzle 252 against the mounting groove 254a to prevent the electro-hydraulic nozzle 252 from moving freely or even falling off the mounting base 254.

[0106] Reference Figures 7-9 The limiting assembly 257 includes a limiting plate 2571 and a limiting screw 2572. One end of the limiting plate 2571 is hinged to a side of the mounting base 254 where a mounting groove 254a is provided, and the other end of the limiting plate 2571 is fixed to the mounting base 254 by bolts, so that the limiting plate 2571 spans the mounting groove 254a. The limiting screw 2572 is threaded through the limiting plate 2571, and when the limiting plate 2571 spans the mounting groove 254a, the limiting screw 2572 extends into the mounting groove 254a and abuts against the electromagnetic nozzle 252.

[0107] With this configuration, after the electrothermal nozzle 252 is installed into the mounting groove 254a, the limiting plate 2571 is rotated so that it spans across the mounting groove 254a, and the free end of the limiting plate 2571 is fixed to the mounting base 254. Then, the limiting screw 2572 is tightened so that it abuts against the electrothermal nozzle 252. In this embodiment, the limiting screw 2572 abuts against the main body 2521 to fix the electrothermal nozzle 252. When it is necessary to remove the electrothermal nozzle 252, the limiting screw 2572 is loosened, and the fixed state of the free end of the limiting plate 2571 is released. The limiting plate 2571 is rotated so that it moves away from the mounting groove 254a, and the electrothermal nozzle 252 can be easily removed.

[0108] It should be noted that the limiting component 257 can help prevent the electrohydrodynamic nozzle 252 from disengaging from the mounting base 254. Due to varying installation experience, when tightening the limiting screw 2572 to press the electrohydrodynamic nozzle 252 against the power supply component 255, the positioning block 2525 may not be properly engaged with the power supply component 255. Therefore, the arrangement of the magnetic adsorption component 2551 ensures a stable electrical connection between the electrode ring 2552 and the positioning block 2525.

[0109] Reference Figure 4 and Figure 5 The electrohydraulic repair printing device 2 further includes a vision inspection component 28, which includes a high-magnification camera mounted on a mounting bracket 23. The high-magnification camera and the electrohydraulic nozzle 252 are arranged at a distance in a first direction. The imaging direction of the high-magnification camera is vertically set to image and inspect the printed droplets.

[0110] After the high-magnification camera is installed on the mounting bracket 23, the relative positions of the high-magnification camera and the current fluid nozzle 252 on the mounting base 254 are determined. After the printing fluid reaches the defect point, the mounting bracket 23 is moved, and the high-magnification camera is used to inspect each repaired defective pad to ensure repair quality and improve repair reliability.

[0111] Since the high-magnification camera and the electro-hydraulic nozzle 252 are spaced apart in the first direction, after the electro-hydraulic nozzle 252 prints functional liquid on the defect point, when the electro-hydraulic nozzle 252 moves to the next defect point in the first direction with the mounting frame 23, the high-magnification camera passes over the already repaired defect point, so that the repair effect can be imaged and detected.

[0112] A high-magnification camera is used to image and inspect the repaired defect points to ensure that the points are repaired to a qualified standard. This facilitates the timely detection and troubleshooting of repair problems, and allows for timely adjustments to the current fluid repair printing components, thus avoiding large-scale repair failures.

[0113] A high-magnification camera, perpendicular to the plane where the defect is located, images the droplet printed onto the defect site to obtain an image of the droplet. This allows for a clearer determination of the droplet's position at the defect site, ensuring that the functional fluid is printed onto the defect site and improving repair reliability.

[0114] Furthermore, the first visual calibration element 24 can image the substrate A. Specifically, the first visual calibration element 24 includes a wide-angle camera. After the repair is completed, the first visual calibration element 24 is used to image all the repaired defective pads, which can perform preliminary detection, locate the repaired defective pads, and determine whether there are any missed unrepaired pads.

[0115] Reference Figure 4 and Figure 5 In this embodiment, the high-magnification camera is arranged between the two sets of repair components 25.

[0116] The visual inspection component 28 also includes a supplementary light, which is mounted on the mounting bracket 23 to provide supplementary lighting to the imaging position of the high-magnification camera and improve the quality of the image.

[0117] Reference Figure 4 The printing device 2 further includes a ranging element 29, which is mounted on the mounting bracket 23. The ranging element 29 is vertically positioned to determine the distance between the electro-hydraulic nozzle 252 and the substrate A. The ranging element 29 allows for real-time determination of the printing height between the ejection end of the electro-hydraulic nozzle 252 and the substrate A, facilitating height adjustment of the nozzle and preventing it from descenting excessively and colliding with the substrate A. In this embodiment, the ranging element 29 includes a laser rangefinder.

[0118] Reference Figure 2 , Figure 3 and Figure 13 The display panel's electro-hydraulic repair system also includes a maintenance device 5, which is used to clean the electro-hydraulic nozzle 252 and calibrate the height of the nozzle 252. The maintenance device 5 is arranged between the printing device 2 and the position calibration device 3, and is located near the edge of the machine base 1.

[0119] Reference Figures 13-15The maintenance device 5 includes a cleaning assembly 51, at least one set of air knife assemblies 52, and a height visual calibration component 53. Both the cleaning assembly 51 and the air knife assembly 52 are mounted on the machine base 1. The cleaning assembly 51 washes the nozzle of the electro-hydraulic printhead 252 with water, and the air knife assembly 52 blows air onto the washed electro-hydraulic printhead 252 to remove cleaning fluid and diluted printing material adhering to its surface, ensuring the cleanliness and dryness of the electro-hydraulic printhead 252 after cleaning, thus guaranteeing print quality. The height visual calibration component 53 is used to image and detect whether the cleaned electro-hydraulic printhead 252 is clean, and to calibrate the height of the nozzle of the electro-hydraulic printhead 252 using height calibration points within the imaging plane of the height visual calibration component 53.

[0120] Reference Figures 13-15 Specifically, the cleaning assembly 51 includes a cleaning tank 511 and an ultrasonic unit 512. The cleaning tank 511 is suspended on the machine base 1 via a frame. The cleaning tank 511 is filled with cleaning fluid, and the top of the cleaning tank 511 is open, allowing the nozzle to extend into the cleaning tank 511 and into the cleaning fluid for cleaning. The ultrasonic unit 512 is installed inside the cleaning tank 511, and the ultrasonic unit 512 causes ultrasonic vibration of the cleaning fluid within the cleaning tank 511 to clean the nozzle inside the cleaning tank 511. In this embodiment, the ultrasonic unit 512 is suspended and fixed to the cleaning tank 511.

[0121] Reference Figures 13-15 The cleaning assembly 51 also includes a liquid supply assembly 513 and a liquid extraction assembly 514. The liquid supply assembly 513 is used to supply cleaning fluid to the cleaning tank 511. The liquid extraction assembly 514 is used to remove used cleaning fluid from the cleaning tank 511. The cleaning effect of the electro-hydraulic nozzle 252 is ensured by replacing the cleaning fluid.

[0122] Reference Figure 13 The liquid supply assembly 513 includes a liquid supply tank 5131 and a liquid supply pump 5132. The liquid supply tank 5131 is connected to the cleaning tank 511 through the liquid supply pump 5132 to pump cleaning liquid into the cleaning tank 511.

[0123] The liquid extraction assembly 514 includes a waste liquid tank 5141 and a waste liquid pump 5142. The waste liquid tank 5141 is connected to the bottom of the cleaning tank 511 through the waste liquid pump 5142 to extract the cleaning liquid in the cleaning tank 511.

[0124] This configuration ensures that the cleaning solution is completely removed by drawing it out from the bottom of the cleaning tank 511, thus preventing contamination of the subsequently replenished cleaning solution, maintaining the cleanliness of the cleaning solution, and improving the cleaning effect on the electro-hydraulic nozzle 252.

[0125] Reference Figure 13 and Figure 14The air knife assembly 52 is arranged around the periphery of the cleaning tank 511. In this embodiment, there are two sets of air knife assemblies 52, which are respectively arranged on opposite sides of the cleaning tank 511. The two sets of air knife assemblies 52 blow air onto opposite sides of the electro-hydraulic nozzle 252 to ensure that the surface of the nozzle of the electro-hydraulic nozzle 252 is cleaned.

[0126] Reference Figure 13 and Figure 14 The air knife assembly 52 includes an air blower frame 521 and an air blower head 522. The air blower frame 521 is mounted on the machine base 1, and the air blower head 522 is mounted on the air blower frame 521, with the air blower head 522 higher than the cleaning tank 511. The air blower head 522 is connected to an external air supply device, which supplies air to the air blower head 522 to blow out cleaning gas. After the electro-hydraulic nozzle 252 is cleaned in the cleaning tank 511, the electro-hydraulic nozzle 252 rises above the cleaning tank 511. At this time, the air blower head 522 blows and washes the electro-hydraulic nozzle 252 to remove the cleaning liquid and printing material from the surface of the electro-hydraulic nozzle 252.

[0127] Reference Figure 13 and Figure 14 Furthermore, the blower head 522 is tilted downwards towards the nozzle. The blower head 522 is tilted downwards towards the nozzle of the electro-hydraulic nozzle 252. On the one hand, the air knife-like cleaning gas blown out by the blower head 522 scrapes away the liquid on the surface of the nozzle of the electro-hydraulic nozzle 252. On the other hand, it avoids the nozzle of the electro-hydraulic nozzle 252 being subjected to radial force, reducing the possibility of damage to the nozzle of the electro-hydraulic nozzle 252.

[0128] Reference Figure 13 and Figure 15 A height visual calibration element 53 is arranged on one side of the cleaning tank 511 and mounted on the machine base 1 via an imaging frame. Correspondingly, a supplementary light is provided for the height visual calibration element 53 and mounted on the machine base 1 to supplement the imaging light for the height visual calibration element 53. In this embodiment, the height visual calibration element 53 includes a camera.

[0129] Reference Figure 13 and Figure 15 The nozzle of the electrohydrodynamic nozzle 252 is moved into the imaging field of view of the height vision calibration element 53, so that the nozzle of the electrohydrodynamic nozzle 252 is imaged by the height vision calibration element 53. By imaging the nozzle of the electrohydrodynamic nozzle 252, the cleaning status of the surface of the nozzle of the electrohydrodynamic nozzle 252 can be known, and the cleaning effect of the nozzle of the electrohydrodynamic nozzle 252 can be ensured.

[0130] Since the height of the height visual calibration component 53 is determined, before printing with the electro-hydraulic nozzle 252, the height of the nozzle of the electro-hydraulic nozzle 252 can be calibrated by moving the nozzle of the electro-hydraulic nozzle 252 to a preset height calibration point in the imaging plane of the height visual calibration component 53, thereby improving the accuracy of subsequent printing with the electro-hydraulic nozzle 252.

[0131] In this embodiment, the imaging direction of the height visual calibration element 53 is set horizontally. This facilitates determining the height of the height calibration point in the focal plane of the height visual calibration element 53 based on its height, and thus facilitates determining the height of the calibrated electrohydrodynamic nozzle 252.

[0132] Before the repair, the printing quality of the current-current printhead 252 was ensured and the height of the current-current printhead 252 was positioned to improve the repair effect.

[0133] Reference Figure 2 and Figure 3 The electrostatic discharge (ESD) repair system for the display panel also includes an ESD device 6, which is installed on the testing frame 31. When the conveying device 4 carries the substrate A under the testing frame 31, the ESD device 6 processes the substrate A to remove static electricity from its surface, ensuring subsequent printing accuracy. In this embodiment, the ESD device 6 includes an ion fan.

[0134] This application provides an electrochemical repair system for a display panel. During substrate A repair, the conveying device 4 moves substrate A in a second direction, and substrate A sequentially passes through the position calibration device 3 and the printing device 2. The printing linear module 22 moves the first visual calibration member 24 above the movement path of the first calibration point A1 on substrate A, and the detection linear module 33 moves the second visual calibration member 32 above the movement path of the second calibration point A2 on substrate A. As substrate A is conveyed in the second direction, the first calibration point A1 near the front end of substrate A is captured by the first visual calibration member 24, and subsequently, the second calibration point A2 near the rear end of substrate A is captured by the second visual calibration member 32, thus achieving the positioning of substrate A. During the positioning process of substrate A, it is not necessary to repeatedly move the camera to capture the first calibration point A1 and the second calibration point A2 on substrate A; while substrate A is positioned, substrate A is simultaneously conveyed to the printing device 2, combining the positioning substrate A and the conveying substrate A, optimizing the processing cycle of substrate A repair, and greatly improving the repair efficiency of substrate A.

[0135] Furthermore, after substrate A is positioned, it is already below the repair component 25 of the printing device 2. At this point, the position of substrate A relative to the repair component 25 in the second direction is adjusted by the conveying device 4, and the position of the repair component 25 relative to substrate A in the first direction is adjusted by the printing linear module 22. This allows the repair component 25 to be sequentially aligned with the defect points on substrate A, thus achieving repair. Therefore, during repair, it is not necessary to move the calibrated cameras one by one or move the printing device 2 to the position of substrate A. As a result, the repair process of substrate A has a more reasonable cycle time and higher repair efficiency.

[0136] In the description of this application, it should be understood that in the accompanying drawings, the positive direction of "X" represents the right, and correspondingly, the negative direction of "X" represents the left; the positive direction of "Y" represents the front, and correspondingly, the negative direction of "Y" represents the rear. The terms "X," "Y," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0137] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" 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; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0138] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0139] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A fluid repair system for a display panel, characterized in that, It includes a machine base and components mounted on the machine base: A printing device includes a printing frame, a printing line module, a mounting frame, a first visual calibration component, and at least one set of repair components. The printing line module drives the mounting frame to move along a first direction on the printing frame. The first visual calibration component and the repair components are both mounted on the mounting frame. The first visual calibration component is used to capture a first calibration point on the substrate, and the repair components are used to print functional liquid at the defect points on the substrate. A position calibration device and a printing device are spaced apart in a second direction. The position calibration device includes a detection frame, a second visual calibration component, and a detection line module. The detection line module drives the second visual calibration component to move along the first direction on the detection frame. The second visual calibration component is used to capture a second calibration point on the substrate. A conveying device is used to carry the substrate and drive the substrate to move in the second direction, wherein the substrate is sequentially delivered to the area below the second visual calibration member and the first visual calibration member.

2. The electrohydraulic repair system for a display panel according to claim 1, characterized in that, The position calibration device also includes a barcode scanner, which is connected to the drive end of the detection linear module and is used to capture the identification code on the substrate to obtain the distribution information of all defect points on the substrate.

3. The electrohydraulic repair system for a display panel according to claim 1, characterized in that, The repair components include: A three-axis motion mechanism is mounted on the mounting frame; An electric fluid nozzle is provided, which is vertically arranged and mounted on the drive end of the three-axis motion mechanism so that the three-axis motion mechanism can drive the electric fluid nozzle to move up and down, left and right, and forward and backward. A real-time visual imaging device is located on one side of the electro-hydraulic nozzle and mounted on the mounting bracket. The imaging direction of the real-time visual imaging device is tilted to the horizontal plane, and the real-time visual imaging device is aligned with the landing position of the droplets ejected from the electro-hydraulic nozzle.

4. The electrohydraulic repair system for a display panel according to claim 3, characterized in that, The repair component also includes a mounting base, which is mounted on the drive end of the three-axis motion mechanism. The mounting base has a mounting groove on its side, and the electro-hydraulic nozzle is mounted in the mounting groove, with the spraying end of the electro-hydraulic nozzle extending below the mounting base.

5. The electrohydraulic repair system for a display panel according to claim 4, characterized in that, The electro-hydraulic nozzle includes: The main body is made of conductive material and is used for electrical connection with an external power supply device. The main body is installed in the mounting groove. The needle body is connected to the main body and is made of insulating material. The needle body is located below the mounting base. An electrode assembly is disposed between the main body and the needle body, with one end of the electrode assembly extending to the nozzle of the needle body, and the electrode assembly is electrically connected to the main body.

6. The electrohydraulic repair system for a display panel according to claim 5, characterized in that, The electro-hydraulic nozzle also includes a positioning block, which is made of conductive material and is sleeved on the main body and electrically connected to the main body. The repair component also includes a power supply component, which is installed at the bottom of the mounting slot. The positioning block abuts against the power supply component to be electrically connected to it. The power supply component is used to be electrically connected to an external power supply device.

7. The electrohydraulic repair system for a display panel according to claim 6, characterized in that, The power supply component includes: A magnetic adsorption element, wherein the magnetic adsorption element is adapted to adsorb the positioning block; An electrode ring is abutted against the positioning block for electrical connection.

8. The electrohydraulic repair system for a display panel according to claim 7, characterized in that, The repair component also includes a positioning sleeve, which is made of metal and has an opening on its circumferential side to allow the main body to enter the positioning sleeve from the side. The positioning sleeve is embedded in the mounting groove, and the bottom surface of the positioning block is in contact with the top surface of the positioning sleeve.

9. The electrohydraulic repair system for a display panel according to claim 3, characterized in that, The printing device further includes a vision inspection component, which includes a high-magnification camera mounted on the mounting frame. The high-magnification camera and the electro-hydraulic nozzle are arranged at a distance in the first direction, and the imaging direction of the high-magnification camera is set vertically to perform imaging inspection on the printed droplets.

10. The electrohydraulic repair system for a display panel according to claim 1, characterized in that, It also includes a maintenance device, which comprises: A cleaning assembly, comprising a cleaning tank and an ultrasonic unit, wherein the cleaning tank is filled with cleaning fluid and the ultrasonic unit is installed inside the cleaning tank; At least one set of air knife assemblies and multiple sets of air knife assemblies are arranged around the periphery of the cleaning tank. The air knife assembly includes a blower frame and a blower head. The blower head is mounted on the blower frame and is higher than the cleaning tank. The blower head blows air towards the spray point of the repair assembly for cleaning. A height visual calibration element images the spray point of the repair component and determines the height of the spray nozzle of the repair component.

Images