Electrofluid repairing system of display panel

Abstract

The invention relates to an electrofluid repairing system of a display panel, which comprises a machine table and a printing device which is arranged on the machine table and comprises a printing frame, a printing linear module, a first visual calibration part and at least one group of repairing components, the first visual calibration part is used for capturing a first calibration point on a substrate, and the at least one group of repairing components is used for repairing the substrate; the repairing assembly is used for printing functional liquid at defect points of the substrate; the position calibration device and the printing device are arranged in a spaced mode in the second direction, the position calibration device comprises a detection frame, a second visual calibration piece and a detection linear module, and the second visual calibration piece is used for capturing a second calibration point on the substrate; the conveying device drives the substrate to be sequentially conveyed to the position below the second visual calibration part and the first visual calibration part. In the substrate conveying process, the first visual calibration piece and the second visual calibration piece are adopted to determine the position of the substrate, and the positioning substrate and the conveying substrate are combined, so that the processing rhythm of substrate repairing is optimized, and the repairing efficiency of the substrate is greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of electrofluid repair, and in particular to an electrofluid repair system for a display panel. Background Art

[0002] MicroLED (micro light emitting diode) display devices are widely used due to their small size, low power consumption, high brightness, high color saturation, fast response and long life. In order to improve the yield of Micro LED display devices, in the preparation process of existing Micro LED display devices, after the LED chip is transferred, the LED chip will be accurately addressed, detected and repaired to eliminate the light-emitting chips that cannot display and improve the yield of the display device.

[0003] In the related art, the defect type is determined to be a silver paste or insulating glue defect. After the bad spot is removed by laser, the required functional liquid is printed on the corresponding pad. The printing device is moved to the defect location, and the silver paste or insulating glue is printed to the defect location in the form of printing to achieve repair.

[0004] The defective substrate is inspected upstream to find out the location of the defective point on the defective substrate. Before repair, place the defective substrate on the repair platform and refer to Fig.16 By capturing the first calibration point A1 and the second calibration point A2 on the substrate to determine the position of the substrate, the positions of all defective points on the substrate can be known. The first calibration point A1 and the second calibration point A2 are located at two diagonal points on the surface of the substrate, respectively. After determining the position of the substrate, the printing device is moved sequentially to the defective points on the repair substrate to achieve repair.

[0005] However, substrate repair requires positioning the substrate first, and the positioning process requires moving the substrate or camera multiple times, and the substrate positioning efficiency is slow. In addition, after the substrate is positioned, the camera that calibrates the substrate position needs to be removed, and then the printing device needs to be moved above the substrate. During each substrate repair process, the camera that calibrates the substrate position needs to be moved back and forth multiple times, and the printing device also needs to be moved above the substrate after the substrate calibration is completed. The processing rhythm of the entire substrate repair process is poor, which seriously affects the substrate repair efficiency. Summary of the invention

[0006] The embodiment of the present application provides an electrofluidic repair system for a display panel to solve the technical problem in the related art that the processing rhythm of the substrate repair process is poor, which seriously affects the repair efficiency of the substrate.

[0007] An electrofluid repair system for a display panel includes a machine platform and:

[0008] A printing device, the printing device comprising a printing frame, a printing linear module, a mounting frame, a first visual calibration member and at least one group of repair components, the printing linear module drives the mounting frame to move along a first direction on the printing frame, the first visual calibration member and the repair component are both mounted on the mounting frame, the first visual calibration member is used to capture a first calibration point on a substrate, and the repair component is used to print a functional liquid at a defective point on the substrate;

[0009] A position calibration device, wherein the position calibration device and the printing device are spaced apart in the second direction, the position calibration device comprises a detection frame, a second visual calibration member and a detection linear module, the detection linear module drives the second visual calibration member to move along the first direction on the detection frame, and the second visual calibration member 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, and the substrate is sequentially conveyed to below the second visual calibration member and the first visual calibration member.

[0011] In some embodiments, the position calibration device also includes a barcode scanner, which is connected to the driving 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.

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

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

[0014] An electric fluid nozzle, the electric fluid nozzle is vertically arranged, and the electric fluid nozzle is installed at the driving end of the three-axis motion mechanism, so that the three-axis motion mechanism drives the electric fluid nozzle to move up and down, left and right, and forward and backward;

[0015] A real-time visual imaging component is located at one side of the electrofluid nozzle and is mounted on the mounting frame. The imaging direction of the real-time visual imaging component is inclined to the horizontal plane, and the real-time visual imaging component is aligned with the landing point of the droplets ejected from the electrofluid nozzle.

[0016] In some embodiments, the repair component also includes a mounting seat, which is mounted on the driving end of the three-axis motion mechanism. A mounting groove is opened on the side of the mounting seat, and the electrofluid nozzle is installed in the mounting groove, and the injection end of the electrofluid nozzle extends to the bottom of the mounting seat.

[0017] In some embodiments, the electrofluidic showerhead comprises:

[0018] A main body, the main body is made of a conductive material, the main body is used to be electrically connected to an external power supply device, and the main body is installed in the installation slot;

[0019] A needle body portion, the needle body portion is communicated with the main body portion, the needle body portion is made of insulating material, and the needle body portion is located below the mounting seat;

[0020] An electrode assembly is provided through the main body and the needle body, and one end of the electrode assembly extends to the nozzle of the needle body, and the electrode assembly is electrically connected to the main body.

[0021] In some embodiments, the electrofluid nozzle further includes a positioning block, the positioning block is made of a conductive material, the positioning block 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 installation groove. The positioning block is pressed against the power supply component to be electrically connected to the power supply component, and the power supply component is used to be electrically connected to an external power supply device.

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

[0024] A magnetic adsorption member, wherein the magnetic adsorption member is suitable for adsorbing the positioning block;

[0025] An electrode ring is pressed against the positioning block to be electrically connected to the positioning block.

[0026] In some embodiments, the repair assembly further comprises a positioning sleeve, the positioning sleeve is made of metal, and an opening is provided on the circumferential side of the positioning sleeve so that the main body can enter the positioning sleeve from the side of the positioning sleeve;

[0027] The positioning sleeve is embedded in the installation 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 device also includes a visual detection component, which includes a high-magnification camera. The high-magnification camera is installed on the mounting frame, and the high-magnification camera and the electrofluid nozzle are arranged at intervals in the first direction. The imaging direction of the high-magnification camera is vertically set to perform imaging detection on the printed droplets.

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

[0030] A cleaning component, the cleaning component comprising a cleaning tank and an ultrasonic unit, the cleaning tank is filled with a cleaning liquid, and the ultrasonic unit is installed in the cleaning tank;

[0031] At least one set of air knife components, multiple sets of air knife components are arranged around the cleaning tank, the air knife components include a blowing frame and a blowing head, the blowing head is installed on the blowing frame, and the blowing head is higher than the cleaning tank, and the blowing head blows air toward the injection position of the repair component for cleaning;

[0032] A height visual calibration component is used to image the injection location of the repair component and determine the height of the injection port of the repair component.

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

[0034] The embodiment of the present application provides an electrofluid repair system for a display panel. When repairing a substrate, a conveying device drives the substrate to move in a second direction, and the substrate passes through a position calibration device and a printing device in sequence. The printing linear module drives the first visual calibration component to move above the motion path of the first calibration point on the substrate, and the detection linear module drives the second visual calibration component to move above the motion path of the 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 then the second calibration point near the rear end of the substrate is captured by the second visual calibration component, so that the positioning of the substrate can be achieved. During the positioning of the substrate, there is no need to repeatedly move the camera to capture the first calibration point and the second calibration point on the substrate; while the substrate is positioned, the substrate is synchronously conveyed to the printing device, and the positioning substrate and the conveying substrate are combined to optimize the processing rhythm of the substrate repair and greatly improve the efficiency of the substrate repair.

[0035] In addition, after the substrate is positioned, the substrate is already under the repair component of the printing device. At this time, the position of the substrate relative to the repair component in the second direction is adjusted by the conveying device, and the position of the repair component relative to the substrate in the first direction is adjusted by the printing linear module, so that the repair component can be aligned with the defective points on the substrate in turn to achieve repair. Therefore, there is no need to move the camera for calibrating the position one by one and then move the printing device to the substrate position during repair, so the repair process of the substrate is more reasonable and the repair efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

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

[0038] Figure 2 An internal schematic diagram of an electrofluidic repair system for a display panel provided in an embodiment of the present application;

[0039] Figure 3 A schematic diagram of another perspective inside the electrofluidic repair system of a display panel provided in an embodiment of the present application;

[0040] Figure 4 A partial schematic diagram of a printing device provided in an embodiment of the present application;

[0041] Figure 5 A schematic diagram of a repair assembly provided in an embodiment of the present application;

[0042] Figure 6 A partial schematic diagram of a repair assembly provided in an embodiment of the present application;

[0043] Figure 7 A partial exploded view of a repair assembly provided in an embodiment of the present application;

[0044] Figure 8 A schematic diagram of the installation of a mounting base and an electrofluid nozzle provided in an embodiment of the present application;

[0045] Fig. 9 A schematic diagram of a state in which the limiting plate provided in an embodiment of the present application does not block the mounting groove;

[0046] Fig.10 A schematic diagram of a power supply provided in an embodiment of the present application;

[0047] Fig.11 An exploded view of an electric fluid nozzle provided in an embodiment of the present application;

[0048] Fig.12 A schematic diagram of the internal structure of an electrofluidic nozzle provided in an embodiment of the present application;

[0049] Fig.13 A schematic diagram of a maintenance device provided in an embodiment of the present application;

[0050] Fig.14 A schematic diagram of the air knife assembly provided in an embodiment of the present application when in operation;

[0051] Fig.15 A schematic diagram of the height visual calibration component provided in an embodiment of the present application when in operation;

[0052] Fig.16 Schematic diagram of the substrate.

[0053] In the figure: 1, machine; 2, printing device; 21, printing frame; 22, printing linear module; 23, mounting frame; 24, first visual calibration part; 25, repair component; 251, three-axis motion mechanism; 252, electrofluid nozzle; 2521, main body; 2522, needle body; 2523, electrode assembly; 2523a, electrode seat; 2523b, electrode wire; 2524, elastic member; 2525, positioning block; 253, real-time visual imaging component; 254, mounting seat; 254a, mounting groove; 254b, wiring hole; 255, power supply component; 2551, magnetic adsorption component; 2552, electrode ring; 256, positioning sleeve; 257, limit assembly; 2571, limit plate; 2572, limit screw; 26, seat; 27, printing lift 1. Descending drive; 28. Visual inspection component; 29. ​​Distance measuring component; 3. Position calibration device; 31. Inspection frame; 32. Second visual calibration component; 33. Inspection linear module; 34. Inspection lifting drive; 35. Barcode scanner; 4. Conveying device; 41. Conveying linear module; 42. Carrying platform; 5. Maintenance device; 51. Cleaning component; 511. Cleaning tank; 512. Ultrasonic unit; 513. Liquid supply component; 5131. Liquid supply barrel; 5132. Liquid supply pump; 514. Liquid extraction component; 5141. Waste liquid barrel; 5142. Waste liquid pump; 52. Wind knife component; 521. Blowing frame; 522. Blowing head; 53. Height visual calibration component; 6. Anti-static device; 7. Sealing box; A. Substrate; A1. First calibration point; A2. Second calibration point. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0055] The embodiment of the present application provides an electrofluidic repair system for a display panel, which uses a first visual calibration member and a second visual calibration member to determine the position of a substrate during the substrate conveying process, and after the substrate position is determined, the substrate is in a printing and repairing position, and the positioning substrate and the conveying substrate are combined to optimize the processing rhythm of substrate repair, greatly improving the repair efficiency of the substrate. The present application solves the technical problem in the related art that the processing rhythm of the substrate repair process is poor, which seriously affects the repair efficiency of the substrate.

[0056] Reference Figure 1-Figure 5, an electrofluidic repair system for a display panel, comprising a machine 1 and a printing device 2, a position calibration device 3 and a conveying device 4 installed on the machine 1. Further, the electrofluidic repair system for a display panel also comprises a sealed box 7 and an atmosphere control system, the machine 1, the printing device 2, the position calibration device 3 and the conveying device 4 are all located in the sealed box 7, and the atmosphere control system is used to communicate with the sealed box 7, so that the atmosphere environment in the sealed box 7 is a processing atmosphere environment, ensuring the normal operation of the printing repair.

[0057] Reference Figure 1-Figure 5 , the substrate A is sent to the position calibration device 3 and the printing device 2 in sequence via the conveying device 4. The position calibration device 3 and the printing device 2 respectively capture the first calibration point A1 and the second calibration point A2 on the substrate A to determine the position of the substrate A. At the same time, the substrate A moves to the printing device 2, and the printing device 2 can directly print and repair the substrate A. By combining the positioning of the substrate A and the conveying of the substrate A, the processing cycle of the substrate A repair is optimized, and the repair efficiency of the substrate A is greatly improved.

[0058] Reference Fig.16 , wherein the surface of substrate A has a first calibration point A1 and a second calibration point A2, the first calibration point A1 and the second calibration point A2 are respectively close to two opposite edges of the surface of substrate A, and the first calibration point A1 and the second calibration point A2 are both set close to the corners of the surface of substrate A. In this embodiment, the first calibration point A1 and the second calibration point A2 are respectively located at two diagonal corners of the surface of substrate A. It should be noted that in the conveying direction of substrate A, the calibration point close to the front end of the movement of substrate A is the first calibration point A1, and the calibration point close to the rear end of the movement of substrate A is the second calibration point A2.

[0059] Reference Figure 2-Figure 5 , wherein the printing device 2 includes a printing frame 21, a printing linear module 22, a mounting frame 23, a first visual calibration component 24 and at least one group of repair components 25. The first visual calibration component 24 and the repair component 25 are both mounted on the mounting frame 23, and the mounting frame 23 is slidably arranged on the printing frame 21 along a first direction. The printing frame 21 is in the shape of a gantry, and the printing frame 21 is mounted on the machine 1. The mounting frame 23 and the first visual calibration component 24 and the repair component 25 on the mounting frame 23 are all located above the machine 1. The printing linear module 22 is mounted on the printing frame 21, and the printing linear module 22 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. wherein the printing linear module 22 includes a linear motor or a screw mechanism.

[0060] Reference Figure 2-Figure 5, the first visual calibration component 24 and the repair component 25 are both driven by the printing linear module 22 to move in the first direction. The first visual calibration component 24 is used to capture the 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 point of the substrate A. The functional liquid includes silver paste or insulating glue. In this embodiment, the first visual calibration component 24 includes a camera.

[0061] In this configuration, the first visual marking component 24 is driven to move in the first direction by the printing linear module 22 to capture the first marking point A1 on the substrate A.

[0062] Reference Figure 2-Figure 5 Further, the printing device 2 also includes a seat 26 and a printing lifting drive 27. The seat 26 is slidably arranged on the printing frame 21 along the first direction. The printing linear module 22 is drivingly connected to the seat 26 to drive the seat 26 to slide in the first direction. The printing lifting drive 27 is installed on the seat 26, and the mounting frame 23 is installed on the driving end of the printing lifting drive 27. The mounting frame 23, the first visual calibration member 24, and the repair component 25 can be driven to move in the first direction through the printing linear module 22, and the mounting frame 23, the first visual calibration member 24, and the repair component 25 can be driven to rise and fall in the vertical direction by the printing lifting drive 27. In this embodiment, the printing lifting drive 27 includes a linear motor or a screw mechanism.

[0063] In this way, the height of the mounting frame 23 can be adjusted by using the printing lifting drive 27. On the one hand, the height of the repair component 25 from the substrate A on the machine table 1 can be adjusted to achieve printing height adjustment, and by moving the repair component 25 and the first visual calibration component 24 upward, collision and damage during the movement of the repair component 25 and the first visual calibration component 24 can be avoided. On the other hand, by changing the height of the first visual calibration component 24, the imaging focal plane of the first visual calibration component 24 can be changed to ensure that the first visual calibration component 24 can capture the first calibration point A1. The first visual calibration component 24 can use a fixed-focus lens, which can save costs while ensuring the imaging effect.

[0064] Reference Figure 2-Figure 5 , wherein the position calibration device 3 and the printing device 2 are spaced apart in the second direction, and the conveying device 4 drives the substrate A to move in the second direction, so as to drive the substrate A to be sequentially delivered 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 Figure 2-Figure 5, wherein the position calibration device 3 includes a detection frame 31, a second visual calibration member 32 and a detection linear module 33. The detection frame 31 is in the shape of a gantry and is mounted on the machine 1. The second visual calibration member 32 is slidably arranged on the detection frame 31 along a first direction, the detection linear module 33 is installed on the detection frame 31, and the detection linear module 33 drives the second visual calibration member 32 to move in the first direction. The second visual calibration member 32 is used to capture the second calibration point A2 on the substrate A. In this embodiment, the second visual calibration member 32 includes a camera.

[0066] Furthermore, the position calibration device 3 further includes a detection lifting drive member 34, which is slidably disposed on the detection frame 31 and is driven by the detection linear module 33 to move along the first direction on the detection frame 31. The second visual calibration member 32 is installed at the driving end of the detection lifting drive member 34 and is driven by the detection lifting drive member 34 to move up and down. The second visual calibration member 32 can move along the first direction and in the vertical direction.

[0067] In this way, the height of the second visual calibration member 32 is adjusted by detecting the lifting drive member 34, so as to avoid collision and damage during the movement of the second visual calibration member 32. On the other hand, by changing the height of the second visual calibration member 32, the imaging focal plane of the second visual calibration member 32 can be changed to ensure that the second visual calibration member 32 can capture the second calibration point A2. The second visual calibration member 32 can use a fixed-focus lens, which can save costs while ensuring the imaging effect.

[0068] Reference Fig.16 , wherein, since the first calibration point A1 and the second calibration point A2 of the substrate A in the present application are respectively located at two diagonal points on 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 component 24 and the second visual calibration component 32, and by pre-moving the first visual calibration component 24 to the movement path of the first calibration point A1 in the second direction, and pre-moving the second visual calibration component 32 to the movement path of the second calibration point A2 in the second direction, the first calibration point A1 and the second calibration point A2 can be quickly and accurately captured during the transportation of the substrate A along the second direction, without repeatedly moving the camera to capture the calibration points, thereby improving the efficiency of positioning and transportation of the substrate A.

[0070] After the substrate A is positioned, the substrate A is already below the repair component 25 of the printing device 2. At this time, the position of the 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 the substrate A in the first direction is adjusted by the printing linear module 22, so that the repair component 25 can be aligned with the defective points on the substrate A in turn to achieve repair. Therefore, there is no need to move the camera for calibrating the position one by one and then move the printing device 2 to the position of the substrate A during repair, so the repair process of the substrate A is more reasonable and the repair efficiency is higher.

[0071] Reference Figure 2-Figure 5 , wherein the conveying device 4 includes a conveying linear module 41 and a carrier 42, the carrier 42 is slidably arranged on the machine 1 along the second direction, and the carrier 42 is suitable for passing under the printing frame 21 and the detection frame 31, that is, the carrier 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 installed on the machine 1, and the conveying linear module 41 drives the carrier 42 to move in the second direction. In this embodiment, the conveying linear module 41 includes a linear motor or a screw mechanism.

[0072] Furthermore, the surface of the carrier 42 has an adsorption structure, which is connected to an external negative pressure device. After the substrate A is placed on the carrier 42, the adsorption structure adsorbs and fixes the substrate A to prevent 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 driving end of the detection linear module 33. In this embodiment, the barcode scanner 35 is installed at the driving 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. Among them, the identification code A3 includes a two-dimensional code or a barcode.

[0074] With this arrangement, by capturing the identification code A3 by the barcode scanner 35, the positions of all defective points on the substrate A can be known, and the defect type of each defective point on the substrate A can be known, which is convenient for subsequent direct fixed-point repair of different defective points.

[0075] Among them, the repair component 25 is suitable for printing functional liquid at the defective point. In this embodiment, the repair component 25 prints silver paste or insulating glue as needed to repair the corresponding defective point. If the defective point is a pad defect, silver paste is printed; if the defective point is a packaging defect, insulating glue is printed.

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

[0077] Reference Figure 4-Figure 7 , wherein the repair component 25 includes a three-axis motion mechanism 251, an electrofluid nozzle 252 and a real-time visual imaging component 253. The three-axis motion mechanism 251 is installed on the mounting frame 23, and the electrofluid nozzle 252 is vertically arranged. The electrofluid nozzle 252 is installed on the driving end of the three-axis motion mechanism 251, so that the three-axis motion mechanism 251 drives the electrofluid 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 by three linear modules with mutually perpendicular driving directions. Specifically, the linear module includes a screw mechanism or a linear motor.

[0078] In this arrangement, according to the position of the defective point, the relative position of the repair component 25 and the substrate A is adjusted by mainly using the conveying device 4 to drive the substrate A to move and the printing linear module 22 to drive the repair component 25. The three-axis motion mechanism 251 fine-tunes and drives the electrofluidic nozzle 252 to move to just above the designated pad, and adjusts the printing height, and finally uses the electrofluidic nozzle 252 to print the corresponding functional liquid to the defective point. Since the electrofluidic nozzle 252 is vertically arranged, the electric field force is consistent with the direction of the functional liquid spraying, and the droplets sprayed by the electrofluidic nozzle 252 fall on the pad in a straight line path. The droplets are not easily affected by horizontal forces, so the possibility of the droplets moving in the horizontal direction during the falling process is reduced, the accuracy of the droplet landing point is improved, and the droplets are ensured to be printed on the corresponding pad, thereby ensuring the repair effect.

[0079] Reference Figure 4-Figure 7 The real-time visual imaging component 253 is located on one side of the electrofluid nozzle 252 and is mounted on the mounting frame 23. The imaging direction of the real-time visual imaging component 253 is inclined to the horizontal plane, and the real-time visual imaging component 253 is aligned with the landing position of the droplets ejected from the electrofluid nozzle 252. The real-time visual imaging component 253 includes a camera. The real-time visual imaging component 253 is used to image the droplets printed on the defective points to determine whether they fall to the corresponding positions.

[0080] Since the real-time visual imaging component 253 is tilted, it is not facing the droplets directly. However, after the droplets fall onto the pad, their spread-out shape is approximately circular. Therefore, the front view image of the droplets can be calculated through the tilt angle of the imaging direction of the real-time visual imaging component 253 and the imaging pattern of the droplets, so as to judge in real time whether the size of the printed droplets is qualified.

[0081] With this arrangement, since the real-time visual imaging component 253 is installed at an angle, it does not interfere with the vertical installation position of the electrofluid nozzle 252, and the real-time visual imaging component 253 can still image the droplets falling on the defective points, so as to ensure that the droplets fall on the defective points through imaging, thereby improving the reliability of the repair.

[0082] The repair component 25 also includes a first fill light that cooperates with the real-time visual imaging component 253. The first fill light is installed on the mounting frame 23, and the first fill light and the real-time visual imaging component 253 are respectively located on opposite sides of the electric fluid nozzle 252. The first fill light fills the imaging position of the real-time visual imaging component 253 to ensure the amount of light entering the real-time visual imaging component 253 and improve the imaging quality.

[0083] In this embodiment, the real-time visual imaging member 253 is fixed on the mounting frame 23. In some embodiments, the mounting frame 23 is provided with a plurality of mounting positions for the real-time visual imaging member 253 to facilitate adjustment of the inclination angle of the real-time visual imaging member 253. In some embodiments, the real-time visual imaging member 253 is slidably arranged on the mounting frame 23 to adjust the inclination angle of the real-time visual imaging member 253. This ensures that the real-time imaging result of the droplet is in a high-quality state and avoids the mounting position of the electrofluid nozzle 252.

[0084] In this embodiment, the angle between the imaging direction of the real-time visual imaging element 253 and the horizontal plane is 10-30 degrees, which can ensure that the real-time imaging result of the droplets is in a usable state and avoid the installation position of the electrofluid nozzle 252.

[0085] Reference Figure 4-Figure 7 , wherein the repair component 25 further includes a mounting seat 254, and the mounting seat 254 is mounted on the driving end of the three-axis motion mechanism 251. A mounting groove 254a is provided on the side of the mounting seat 254, and the electrofluid nozzle 252 is mounted in the mounting groove 254a. The mounting seat 254 is used to provide an installation position for the electrofluid nozzle 252, and the mounting groove 254a is used to facilitate positioning of the installation position of the electrofluid nozzle 252. The injection end of the electrofluid nozzle 252 extends to the bottom of the mounting seat 254 to support the injection end of the electrofluid nozzle 252 to be as close to the substrate A as possible, thereby increasing the adjustment range of the printing height and avoiding interference of the mounting seat 254 with the adjustment of the printing height.

[0086] Preferably, the mounting base 254 is made of insulating material. Since the electrofluidic nozzle 252 needs an external voltage to generate an electric field, the insulating mounting base 254 avoids the generation of electric field crosstalk and affects the printing accuracy of the electrofluidic nozzle 252 .

[0087] Reference Fig.11 and Fig.12The electrofluid nozzle 252 includes a main body 2521, a needle body 2522 and an electrode assembly 2523. The main body 2521 is made of a conductive material, and is used to be electrically connected to an external power supply device. The main body 2521 is installed in the installation groove 254a.

[0088] Reference Fig.11 and Fig.12 The needle body 2522 is connected to the main body 2521, and the needle body 2522 is made of insulating material. The needle body 2522 is located below the mounting seat 254. Specifically, the needle body 2522 is plugged into the main body 2521 to form a detachable connection between the needle body 2522 and the main body 2521, which is convenient for replacing the needle body 2522. In this embodiment, the needle body 2522 and the main body 2521 are connected by threads to improve the connection strength between the two.

[0089] Reference Figure 7 , Figure 8 , Fig.11 and Fig.12 The main body 2521 is located below the mounting seat 254, which can avoid interference from the mounting seat 254 and be as close to the pad as possible. Due to the insulated setting of the needle body 2522, the functional liquid after power-on will not cause electrochemical corrosion to the needle body 2522, but maintain the shape of the needle body 2522, ensure the consistency of multiple printings of the needle body 2522, ensure that the landing position of the printing is controllable, and ensure the printing accuracy.

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

[0091] Reference Fig.11 and Fig.12 Specifically, the electrode assembly 2523 is located in the middle of the needle body 2522 and the main body 2521, that is, the center lines of the electrode assembly 2523, the needle body 2522 and the main body 2521 are consistent. Since the relative positions of the electrode assembly 2523, the needle body 2522 and the main body 2521 are consistent, the flight path of the printed droplets is more consistent, thereby improving the printing consistency. In addition, the electrode assembly 2523 extends to the nozzle of the needle body 2522 to apply voltage at the nozzle, and the electric field force is applied to the functional liquid closer to the ejection position of the functional liquid, so that the ejected droplets are less affected by the electric field force crosstalk, thereby improving the printing accuracy.

[0092] Reference Fig.11 and Fig.12Specifically, the electrode assembly 2523 includes an electrode seat 2523a and an electrode wire 2523b, and the electrode wire 2523b is coaxially fixed on the electrode seat 2523a. The electrode seat 2523a is inserted at the top of the needle body 2522, and the electrode wire 2523b is inserted into the needle body 2522, and the electrode wire 2523b extends to the injection port of the needle body 2522. After the needle body 2522 is inserted and matched with the main body 2521, the electrode seat 2523a is partially located in the main body 2521 and is electrically connected to the main body 2521.

[0093] Reference Fig.11 and Fig.12 Furthermore, the electrofluid nozzle 252 also includes an elastic member 2524. A matching hole is provided at the end of the main body 2521 through which the needle body 2522 is inserted. The elastic member 2524 is installed in the matching hole. The two ends of the elastic member 2524 are respectively pressed against the electrode seat 2523a and the bottom of the matching hole. As the main body 2521 and the needle body 2522 are plugged in and matched, the elastic member 2524 presses the electrode seat 2523a. The elastic member 2524 is made of a conductive material. In this embodiment, the elastic member 2524 includes a spring.

[0094] With this arrangement, the elastic member 2524 not only presses against the electrode seat 2523a to fix the position of the electrode seat 2523a, but also electrically connects the electrode seat 2523a and the main body 2521, thereby making the electrical connection between the electrode assembly 2523 and the main body 2521 more stable, ensuring that the electrode assembly 2523 is subsequently supplied with stable power through the main body 2521.

[0095] Reference Figure 6-Figure 9 Specifically, the electrofluid nozzle 252 further includes a positioning block 2525, which is made of a conductive material, and 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 the positioning block 2525 is electrically connected to an external power supply device, so that the voltage is transmitted to the electrode assembly 2523 by using the positioning block 2525 and the main body 2521.

[0096] Reference Figure 7-10 The repair assembly 25 further includes a power supply 255, which is installed at the bottom of the installation groove 254a. In this embodiment, the power supply 255 is embedded in the bottom of the installation groove 254a to save installation space. When installing the fluid nozzle 252, the positioning block 2525 is pressed against the power supply 255 to be electrically connected to the power supply 255, and the power supply 255 is used to be electrically connected to an external power supply device.

[0097] With this arrangement, after the fluid nozzle 252 is mounted on the mounting seat 254, the positioning block 2525 is pressed against the power supply member 255, so that the voltage can be transmitted to the electrode assembly 2523, thereby powering the fluid nozzle 252. The installation and power supply of the fluid nozzle 252 are integrated, which makes the operation simpler.

[0098] Reference Figure 7-10 Specifically, the power supply 255 includes a magnetic adsorption member 2551 and an electrode ring 2552. The positioning block 2525 is made of a magnetic conductive material, and the magnetic adsorption member 2551 is suitable for adsorbing the positioning block 2525. The electrode ring 2552 is sleeved on the magnetic adsorption member 2551, and the electrode ring 2552 is pressed against the positioning block 2525 as the magnetic adsorption member 2551 adsorbs the positioning block 2525 to be electrically connected with the positioning block 2525.

[0099] With this arrangement, after the electrofluidic nozzle 252 is mounted on the mounting seat 254, the magnetic connection between the magnetic adsorption member 2551 and the positioning block 2525 ensures that the positioning block 2525 is stably electrically connected to the electrode ring 2552, so that the voltage applied to the electrofluidic nozzle 252 is stable and voltage fluctuations are not likely to occur due to the connection, thereby ensuring that the electric field force applied to the functional liquid is more stable, thereby improving the printing consistency. The positioning installation and power supply operation of the electrofluidic nozzle 252 are performed simultaneously, which is convenient and quick, thereby improving the installation and removal efficiency of the electrofluidic nozzle 252.

[0100] Reference Figure 7-10 Furthermore, a wiring hole 254b is opened on the side of the mounting seat 254, and the wiring hole 254b extends to the installation position of the power supply component 255 to facilitate the electrical connection between the voltage line and 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 Figure 7-10 The repair assembly 25 further includes a positioning sleeve 256, which is made of a conductive metal material. The circumferential side of the positioning sleeve 256 is provided with an opening, so that the main body 2521 can enter the positioning sleeve 256 from the side of the positioning sleeve 256. After the main body 2521 enters the positioning sleeve 256, the circumferential outer side of the main body 2521 is attached to the positioning sleeve 256.

[0102] Reference Figure 7-Figure 9Furthermore, the positioning sleeve 256 is embedded in the installation groove 254a, and the groove wall of the installation groove 254a is provided with a step surface, and the bottom surface of the positioning sleeve 256 is pressed against the step surface, and the step surface also positions the installation position of 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 fitted with the top surface of the positioning sleeve 256, so as to realize the positioning installation of the electrofluid nozzle 252, and ensure that the relative positions of the electrofluid nozzle 252 and the mounting seat 254 are consistent each time the electrofluid nozzle 252 is installed in the installation groove 254a, so as to save the time of calibrating the position of the electrofluid nozzle 252.

[0103] With this arrangement, after the main body 2521 is installed on the positioning sleeve 256, the positioning block 2525 is tightly attached to the positioning sleeve 256, and the main body 2521 is tightly attached to the positioning sleeve 256, so as to ensure that the voltage is stably transmitted from the positioning block 2525 to the main body 2521. In addition, the positioning sleeve 256 is made of metal and has a weak deformation ability. After the positioning block 2525 is tightly attached to the positioning sleeve 256, it is not easy to cause the positioning sleeve 256 to deform, thereby ensuring the installation accuracy of the electrofluid nozzle 252.

[0104] Furthermore, the corners of the positioning sleeve 256 have an arc transition. Since the positioning sleeve 256 is also added with voltage, the corners of the positioning sleeve 256 are not prone to tip discharge after the arc transition, and the voltage at the fluid nozzle 252 is more stable, ensuring the printing accuracy. In addition, the corners with arc transition also facilitate the installation of the positioning sleeve 256 into the installation groove 254a.

[0105] Reference Figure 7-Figure 9 Optionally, the repair component 25 further includes a limiting component 257, which is used to press the electrofluid nozzle 252 tightly into the mounting groove 254a to prevent the electrofluid nozzle 252 from moving arbitrarily or even detaching from the mounting seat 254.

[0106] Reference Figure 7-Figure 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 surface of the mounting seat 254 with a mounting groove 254a, and the other end of the limiting plate 2571 is fixed to the mounting seat 254 by a bolt, so that the limiting plate 2571 spans the mounting groove 254a. The limiting screw 2572 is threadedly penetrated in the limiting plate 2571, and when the limiting plate 2571 spans the mounting groove 254a, the limiting screw 2572 extends to the mounting groove 254a and presses against the electrofluid nozzle 252.

[0107] In this way, after the electrofluid nozzle 252 is installed in the installation groove 254a, the limiting plate 2571 is rotated so that the limiting plate 2571 crosses the installation groove 254a, and the free end of the limiting plate 2571 is fixed to the mounting seat 254, and then the limiting screw 2572 is tightened so that the limiting screw 2572 is pressed against the electrofluid nozzle 252. In this embodiment, the limiting screw 2572 is pressed against the main body 2521. This realizes the fixation of the electrofluid nozzle 252. When the electrofluid nozzle 252 needs to be removed, the limiting screw 2572 is loosened, and the fixed state of the free end of the limiting plate 2571 is released, and the limiting plate 2571 is rotated to make the limiting plate 2571 away from the installation groove 254a, so that the electrofluid nozzle 252 can be easily taken out.

[0108] It should be noted that the limiting assembly 257 can be used to help limit the electrofluid nozzle 252 from being separated from the mounting seat 254. Due to the different experience of the installation workers, when the limiting screw 2572 is turned to tighten the electrofluid nozzle 252, it is easy for the positioning block 2525 to not be tightly pressed against the power supply 255, so the magnetic adsorption member 2551 is arranged to ensure that the electrode ring 2552 is stably electrically connected to the positioning block 2525.

[0109] Reference Figure 4 and Figure 5 The electrofluid repair printing device 2 further includes a visual detection component 28, which includes a high-magnification camera mounted on a mounting frame 23, and the high-magnification camera and the electrofluid nozzle 252 are arranged at intervals in the first direction. The imaging direction of the high-magnification camera is vertically arranged to perform imaging detection on the printed droplets.

[0110] After the high-power camera is mounted on the mounting frame 23, the relative positions of the high-power camera and the electrofluid nozzle 252 on the mounting seat 254 are determined. After the functional liquid is printed to the defective point, the mounting frame 23 is moved, and the high-power camera is used to detect the repaired defective pads one by one to ensure the repair quality and improve the reliability of the repair.

[0111] Since the high-magnification camera and the electrofluidic nozzle 252 are spaced apart in the first direction, after the electrofluidic nozzle 252 prints the functional liquid on the defective point, when the electrofluidic nozzle 252 moves to the next defective point in the first direction along with the mounting frame 23, the high-magnification camera passes over the repaired defective point, and imaging detection of the repair effect can be performed.

[0112] The high-magnification camera performs imaging detection on the repaired defective points to ensure that the points are repaired properly, which facilitates timely discovery of repair problems, timely troubleshooting of problems, and timely adjustment of the electrofluid repair printing components to avoid large-scale unqualified repairs.

[0113] The high-power camera is perpendicular to the plane where the defective point is located to image the droplets printed on the defective point to obtain an image, and the actual image of the droplets can be obtained. The position of the droplets falling on the defective point can be determined more clearly to ensure that the functional liquid is printed on the defective point, thereby improving the reliability of repair.

[0114] Furthermore, the first visual calibration member 24 can image the substrate A. Specifically, the first visual calibration member 24 includes a wide-angle camera. After the repair is completed, the first visual calibration member 24 is used to image all the repaired defective pads, so as to perform preliminary inspection, locate the repaired defective pads, and determine whether there are any missed pads that have not been repaired.

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

[0116] The visual detection component 28 also includes a fill light, which is installed on the mounting frame 23 to fill light for the imaging position of the high-power camera to improve the quality of the imaging picture.

[0117] Reference Figure 4 , wherein the printing device 2 further includes a distance measuring member 29, which is mounted on the mounting frame 23, and the distance measuring direction of the distance measuring member 29 is vertically arranged to determine the distance between the electrofluid nozzle 252 and the substrate A. The distance measuring member 29 can be used to determine the printing height between the ejection end of the electrofluid nozzle 252 and the substrate A in real time, so as to facilitate the adjustment of the height of the electrofluid nozzle 252 and prevent the electrofluid nozzle 252 from falling excessively and hitting the substrate A. In this embodiment, the distance measuring member 29 includes a laser rangefinder.

[0118] Reference Figure 2 , Figure 3 and Fig.13 The electrofluid repair system of the display panel further includes a maintenance device 5, which is used to clean the electrofluid nozzle 252 and calibrate the height of the nozzle of the electrofluid nozzle 252. The maintenance device 5 is arranged between the printing device 2 and the position calibration device 3, and is arranged close to the edge of the machine platform 1.

[0119] Reference Figure 13-Figure 15The maintenance device 5 includes a cleaning component 51, at least one set of air knife components 52 and a height visual calibration component 53. The cleaning component 51 and the air knife component 52 are both installed on the machine 1. The cleaning component 51 washes the nozzle of the electrofluid nozzle 252 with water, and the air knife component 52 blows air to the electrofluid nozzle 252 after washing to blow away the cleaning liquid and the diluted printing material attached to the surface of the electrofluid nozzle 252, to ensure the cleanliness and dryness of the electrofluid nozzle 252 after cleaning, and to ensure the printing quality. The height visual calibration component 53 is used to perform imaging detection on the electrofluid nozzle 252 after cleaning to see if it is clean, and to calibrate the height at the nozzle of the electrofluid nozzle 252 through the height calibration point in the imaging plane of the height visual calibration component 53.

[0120] Reference Figure 13-Figure 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 1 through a frame. The cleaning tank 511 is filled with cleaning liquid, and the top of the cleaning tank 511 is open. The nozzle is suitable for extending into the cleaning tank 511 and extending into the cleaning liquid for cleaning. The ultrasonic unit 512 is installed in the cleaning tank 511. The ultrasonic unit 512 causes the cleaning liquid in the cleaning tank 511 to ultrasonically vibrate and clean the nozzle in the cleaning tank 511. In this embodiment, the ultrasonic unit 512 is suspended and fixed to the cleaning tank 511.

[0121] Reference Figure 13-Figure 15 The cleaning assembly 51 further includes a liquid supply assembly 513 and a liquid extraction assembly 514. The liquid supply assembly 513 is used to provide cleaning liquid to the cleaning tank 511. The liquid extraction assembly 514 is used to extract the used cleaning liquid in the cleaning tank 511. The cleaning effect of the electrofluid nozzle 252 is ensured by replacing the cleaning liquid.

[0122] Reference Fig.13 The liquid supply assembly 513 includes a liquid supply barrel 5131 and a liquid supply pump 5132 . The liquid supply barrel 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 component 514 includes a waste liquid barrel 5141 and a waste liquid pump 5142 . The waste liquid barrel 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] With this arrangement, the cleaning liquid is discharged by pumping it out from the bottom of the cleaning tank 511 , ensuring that the cleaning liquid is completely pumped out, thereby avoiding contamination of the subsequently replenished cleaning liquid, ensuring the cleanliness of the cleaning liquid, and improving the cleaning effect on the electrofluid nozzle 252 .

[0125] Reference Fig.13 and Fig.14The air knife assembly 52 is arranged on the peripheral side of the cleaning tank 511. In this embodiment, two groups of air knife assemblies 52 are provided, and the two groups of air knife assemblies 52 are respectively arranged on opposite sides of the cleaning tank 511. The two groups of air knife assemblies 52 blow air to opposite sides of the electrofluid nozzle 252 respectively to ensure that the surface at the nozzle of the electrofluid nozzle 252 is blown.

[0126] Reference Fig.13 and Fig.14 The air knife assembly 52 includes a blowing frame 521 and a blowing head 522. The blowing frame 521 is installed on the machine 1, and the blowing head 522 is installed on the blowing frame 521, and the blowing head 522 is higher than the cleaning tank 511. The blowing head 522 is connected to an external air supply device, and the external air supply device supplies air to the blowing head 522 so that the blowing head 522 blows out a clean gas. After the electrofluid nozzle 252 is cleaned in the cleaning tank 511, the electrofluid nozzle 252 rises to the top of the cleaning tank 511, and the blowing head 522 blows and washes the electrofluid nozzle 252 to blow away the cleaning liquid and printing materials on the surface of the electrofluid nozzle 252.

[0127] Reference Fig.13 and Fig.14 Furthermore, the blowing head 522 blows air obliquely downward toward the nozzle. The blowing head 522 blows air obliquely downward toward the nozzle of the electrofluid nozzle 252. On the one hand, the air knife-like cleaning gas blown out by the blowing head 522 is used to scrape off the liquid on the surface of the nozzle of the electrofluid nozzle 252. On the other hand, the nozzle of the electrofluid nozzle 252 is prevented from being subjected to radial force, thereby reducing the possibility of damage to the nozzle of the electrofluid nozzle 252.

[0128] Reference Fig.13 and Fig.15 The height visual calibration member 53 is arranged at one side of the cleaning tank 511 and is mounted on the machine platform 1 through an imaging frame. Correspondingly, a fill light is arranged for the height visual calibration member 53, and the fill light is mounted on the machine platform 1. The fill light is used to supplement the imaging light for the height visual calibration member 53. In this embodiment, the height visual calibration member 53 includes a camera.

[0129] Reference Fig.13 and Fig.15 , the nozzle of the electrofluidic nozzle 252 is moved into the imaging field of view of the height visual calibration member 53, so that the nozzle of the electrofluidic nozzle 252 is imaged by the height visual calibration member 53. By imaging the nozzle of the electrofluidic nozzle 252, the cleaning state of the surface of the nozzle of the electrofluidic nozzle 252 can be known, and the cleaning effect of the nozzle of the electrofluidic nozzle 252 can be ensured.

[0130] Since the height of the height vision calibration component 53 is determined, before the electrofluidic nozzle 252 prints, the height of the nozzle of the electrofluidic nozzle 252 can be calibrated by moving the nozzle of the electrofluidic nozzle 252 to a preset height calibration point in the imaging plane of the height vision calibration component 53, so as to improve the accuracy of subsequent printing by the electrofluidic nozzle 252.

[0131] In this embodiment, the imaging direction of the height visual calibration member 53 is set horizontally, so as to facilitate the determination of the height of the height calibration point in the focal plane of the height visual calibration member 53 by the height of the height visual calibration member 53, and to facilitate the determination of the height of the calibrated electric fluid ejector 252.

[0132] Before repairing, the electrofluidic nozzle 252 is cleaned and the height of the electrofluidic nozzle 252 is positioned to ensure the printing quality of the electrofluidic nozzle 252 and improve the repairing effect.

[0133] Reference Figure 2 and Figure 3 The electro-fluid repair system of the display panel further includes a static electricity removal device 6, which is installed on the detection frame 31. When the conveying device 4 drives the substrate A to pass under the detection frame 31, the static electricity removal device 6 processes the substrate A to remove static electricity on the surface of the substrate A to ensure subsequent printing accuracy. In this embodiment, the static electricity removal device 6 includes an ion blower.

[0134] The embodiment of the present application provides an electrofluid repair system for a display panel. When the substrate A is repaired, the conveying device 4 drives the substrate A to move in the second direction, and the substrate A passes through the position calibration device 3 and the printing device 2 in sequence. The printing linear module 22 drives the first visual calibration component 24 to move above the motion path of the first calibration point A1 on the substrate A, and the detection linear module 33 drives the second visual calibration component 32 to move above the motion path of the second calibration point A2 on the substrate A. As the substrate A is transported in the second direction, the first calibration point A1 near the front end of the substrate A is captured by the first visual calibration component 24, and then the second calibration point A2 near the rear end of the substrate A is captured by the second visual calibration component 32, so that the positioning of the substrate A can be achieved. During the positioning process of the substrate A, there is no need to repeatedly move the camera to capture the first calibration point A1 and the second calibration point A2 on the substrate A; while the substrate A is positioned, the substrate A is synchronously transported to the printing device 2, and the positioning of the substrate A and the transport of the substrate A are combined, which optimizes the processing rhythm of the substrate A repair and greatly improves the efficiency of the substrate A repair.

[0135] In addition, after the substrate A is positioned, the substrate A is already below the repair component 25 of the printing device 2. At this time, the position of the 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 the substrate A in the first direction is adjusted by the printing linear module 22, so that the repair component 25 can be aligned with the defective points on the substrate A in sequence to achieve repair. Therefore, during repair, there is no need to move the cameras for calibrating the position one by one and then move the printing device 2 to the position of the substrate A, so the repair process of the substrate A is more reasonable and the repair efficiency is higher.

[0136] In the description of the present application, it should be understood that the positive direction of "X" in the drawings represents the right, and correspondingly, the reverse direction of "X" represents the left; the positive direction of "Y" represents the front, and correspondingly, the reverse direction of "Y" represents the back. The orientation or position relationship indicated by the terms "X", "Y", etc. is based on the orientation or position relationship shown in the drawings of the specification, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0137] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present 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 only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0139] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. An electrofluid repair system for a display panel, characterized in that: It includes a machine and: A printing device, the printing device comprising a printing frame, a printing linear module, a mounting frame, a first visual calibration member and at least one group of repair components, the printing linear module drives the mounting frame to move along a first direction on the printing frame, the first visual calibration member and the repair component are both mounted on the mounting frame, the first visual calibration member is used to capture a first calibration point on a substrate, and the repair component is used to print a functional liquid at a defective point on the substrate; A position calibration device, wherein the position calibration device and the printing device are spaced apart in the second direction, the position calibration device comprises a detection frame, a second visual calibration member and a detection linear module, the detection linear module drives the second visual calibration member to move along the first direction on the detection frame, and the second visual calibration member 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, and the substrate is sequentially conveyed to below the second visual calibration member and the first visual calibration member.

2. The electrofluidic 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 driving 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 electrofluidic repair system for a display panel according to claim 1, characterized in that: The repair component comprises: A three-axis motion mechanism, the three-axis motion mechanism is mounted on the mounting frame; An electric fluid nozzle, the electric fluid nozzle is vertically arranged, and the electric fluid nozzle is installed at the driving end of the three-axis motion mechanism, so that the three-axis motion mechanism drives the electric fluid nozzle to move up and down, left and right, and forward and backward; A real-time visual imaging component is located at one side of the electrofluid nozzle and is mounted on the mounting frame. The imaging direction of the real-time visual imaging component is inclined to the horizontal plane, and the real-time visual imaging component is aligned with the landing point of the droplets ejected from the electrofluid nozzle.

4. The electrofluidic repair system for a display panel according to claim 3, characterized in that: The repair component also includes a mounting seat, which is installed on the driving end of the three-axis motion mechanism. A mounting groove is opened on the side of the mounting seat. The electrofluid nozzle is installed in the mounting groove, and the injection end of the electrofluid nozzle extends to the bottom of the mounting seat.

5. The electrofluidic repair system for a display panel according to claim 4, characterized in that: The electric fluid nozzle comprises: A main body, the main body is made of a conductive material, the main body is used to be electrically connected to an external power supply device, and the main body is installed in the installation slot; A needle body portion, the needle body portion is communicated with the main body portion, the needle body portion is made of insulating material, and the needle body portion is located below the mounting seat; An electrode assembly is provided through the main body and the needle body, and one end of the electrode assembly extends to the nozzle of the needle body, and the electrode assembly is electrically connected to the main body.

6. The electrofluidic repair system for a display panel according to claim 5, characterized in that: The electrofluid nozzle further comprises a positioning block, which is made of a 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 installation groove. The positioning block is pressed against the power supply component to be electrically connected to the power supply component, and the power supply component is used to be electrically connected to an external power supply device.

7. The electrofluidic repair system for a display panel according to claim 6, characterized in that: The power supply comprises: A magnetic adsorption member, wherein the magnetic adsorption member is suitable for adsorbing the positioning block; An electrode ring is pressed against the positioning block to be electrically connected to the positioning block.

8. The electrofluidic repair system for a display panel according to claim 7, characterized in that: The repair assembly further includes a positioning sleeve, which is made of metal, and an opening is provided on the circumferential side of the positioning sleeve so that the main body can enter the positioning sleeve from the side of the positioning sleeve; The positioning sleeve is embedded in the installation groove, and the bottom surface of the positioning block is in contact with the top surface of the positioning sleeve.

9. The electrofluidic repair system for a display panel according to claim 1, characterized in that: The printing device also includes a visual detection component, which includes a high-magnification camera. The high-magnification camera is installed on the mounting frame. The high-magnification camera and the electrofluid nozzle are arranged at intervals in the first direction. The imaging direction of the high-magnification camera is vertically set to perform imaging detection on the printed droplets.

10. The electrofluidic repair system for a display panel according to claim 1, characterized in that: Also included is a maintenance device, the maintenance device comprising: A cleaning component, the cleaning component comprising a cleaning tank and an ultrasonic unit, the cleaning tank is filled with a cleaning liquid, and the ultrasonic unit is installed in the cleaning tank; At least one set of air knife components, multiple sets of air knife components are arranged around the cleaning tank, the air knife components include a blowing frame and a blowing head, the blowing head is installed on the blowing frame, and the blowing head is higher than the cleaning tank, and the blowing head blows air toward the injection position of the repair component for cleaning; A height visual calibration component is used to image the injection location of the repair component and determine the height of the injection port of the repair component.

Images