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CN-122007526-A - Small miniLED module repairing device and repairing method

CN122007526ACN 122007526 ACN122007526 ACN 122007526ACN-122007526-A

Abstract

The invention discloses a small miniLED module repairing device and a repairing method, which relate to the technical field of miniLED module repairing, and comprise a clamp, a shifting mechanism and a repairing operation mechanism, wherein the clamp is used for clamping and fixing a PCB to be repaired, the shifting mechanism is used for driving the clamp to shift and adjust in a horizontal plane, the shifting mechanism and the clamp are respectively arranged in a lower case of the repairing device, the repairing operation mechanism is arranged in an upper case of the repairing device and is positioned above the clamp, the repairing operation mechanism is used for sequentially performing glue removal, cleaning, glue dispensing, welding and detection operations on a damaged LED on the PCB, the repairing device is integrated to repair the LED on the PCB to be repaired, multi-dimensional driving of the shifting mechanism is realized, the volume of the whole device is reduced, and the application range is wide.

Inventors

  • LI JINNING
  • YUAN JIAN
  • ZHANG BOYU
  • Du Dongtan

Assignees

  • 深圳铭创智能装备有限公司

Dates

Publication Date
20260512
Application Date
20260303

Claims (10)

  1. 1. A compact miniLED module repair device, comprising: The fixture (5), the said fixture (5) is used for holding and fixing the PCB board (4) to be repaired; The displacement mechanism (3) is used for driving the displacement adjustment of the clamp (5) in a horizontal plane, wherein the displacement mechanism (3) and the clamp (5) are respectively arranged in a lower chassis (2) of the repairing device; Repair operating mechanism (6), repair operating mechanism (6) set up in prosthetic devices's last quick-witted case (1), and repair operating mechanism (6) are located the top of anchor clamps (5), repair operating mechanism (6) are used for carrying out in proper order and remove gluey, get rid of, clearance, point and glue, welding and detection operation to the LED that breaks out on PCB board (4).
  2. 2. The small miniLED module repairing device according to claim 1, wherein the repairing operation mechanism (6) comprises a tool switching mechanism, a laser module, a vacuum pick-and-place assembly, a pressing needle, a dispensing needle and a probe, the tool switching mechanism is used for switching working states of the pressing needle, the dispensing needle, the probe and a suction nozzle in the vacuum pick-and-place assembly at repairing positions, and the laser module is used for removing sealing glue and welding an LED.
  3. 3. The small miniLED module repairing device according to claim 2, wherein the displacement mechanism (3) comprises an X-axis displacement assembly (31), a Y-axis displacement assembly (32) and an R-axis displacement assembly (33), the output end of the X-axis displacement assembly (31) is in transmission connection with a first support plate (312), the first support plate (312) is provided with the Y-axis displacement assembly (32), the output end of the Y-axis displacement assembly (32) is in transmission connection with a second support plate (321), the second support plate (321) is provided with the R-axis displacement assembly (33), the output end of the R-axis displacement assembly (33) is in transmission connection with a clamp (5), wherein the displacement directions of the X-axis displacement assembly (31) and the Y-axis displacement assembly (32) are respectively located in horizontal planes and are perpendicular to each other, and the displacement directions of the R-axis displacement assembly (33) are located in vertical planes.
  4. 4. A small miniLED module repairing device according to claim 3, wherein the X-axis displacement assembly (31) comprises an X-axis motor (311), a slider (313), a screw rod (315), a sliding seat (314) and a sliding rail (316), the output end of the X-axis motor (311) is in transmission connection with the screw rod (315), two ends of the screw rod (315) are rotatably erected on the machine body of the lower machine case (2), the screw rod (315) is in threaded connection with the sliding seat (314), the upper end of the sliding seat (314) is fixedly connected with the first supporting plate (312), the side end of the first supporting plate (312) is fixedly connected with the slider (313), the sliding rail (313) is in sliding connection with the sliding rail (316), and the sliding rail (316) is fixedly installed on the machine body of the lower machine case (2).
  5. 5. A small miniLED module repairing device according to claim 3, wherein the R-axis displacement assembly (33) comprises an R-axis motor (331) and a speed reducer (333), the R-axis motor (331) is mounted on the second support plate (321), the output end of the R-axis motor (331) is in transmission connection with the speed reducer (333), and the output end of the speed reducer (333) is in transmission connection with the clamp (5).
  6. 6. The small miniLED module repairing device according to claim 5, wherein a band-type brake electromagnet (332) is arranged on one side of the R-axis motor (331), and the band-type brake electromagnet (332) is mounted on the second support plate (321).
  7. 7. The small miniLED module repairing device according to claim 5, wherein the clamp (5) comprises a supporting plate (51), a fixed side clamping plate (52), a movable side clamping plate (55) and an upper pressing plate (53), the supporting plate (51) is in transmission connection with the output end of the speed reducer (333), the fixed side clamping plate (52) and an abutting plate (56) are fixedly connected to the edge position of the upper end of the supporting plate (51), the movable side clamping plate (55) is fixedly arranged at the outer end of a telescopic rod (54), the inner end of the telescopic rod (54) is slidably arranged in the supporting plate (51), the movable side clamping plate (55) is hooked with the supporting plate (51) through a spring (541), the movable side clamping plate (55) and the fixed side clamping plate (52) are oppositely arranged, and the upper pressing plate (53) is fixedly arranged on the fixed side clamping plate (52), the movable side clamping plate (55) and the abutting plate (56) respectively; The inner ends of the upper pressing plates (53) correspondingly protrude out of the fixed side clamping plates (52), the movable side clamping plates (55) and the abutting plates (56), and inclined surfaces are arranged at the inner ends of the fixed side clamping plates (52), the movable side clamping plates (55) and the abutting plates (56).
  8. 8. The small miniLED module repairing device according to claim 7, wherein the upper end surface of the supporting plate (51) is provided with a limit groove (57), an upper abutting component (58) is embedded in the limit groove (57), the upper abutting component (58) comprises an upper limit block (582), a lower limit block (581), a first abutting ball (583) and a second abutting ball (585), the upper limit block (582) and the lower limit block (581) are assembled and connected, a pair of second abutting balls (585) are symmetrically arranged in the lower limit block (581), a first abutting ball (583) is placed in an opening of the upper limit block (582), the first abutting ball (583) is in friction abutting connection with the second abutting ball (585), the mass of the first abutting ball (583) is smaller than that of the second abutting ball (585), and the volume of the first abutting ball (583) is larger than that of the second abutting ball (585).
  9. 9. A method for repairing a small-sized miniLED module, which is applied to the small-sized miniLED module repairing device according to claim 8, the repairing method comprising the steps of: removing glue, namely thinning the sealing glue of the coarse positioning area of the dead pixel of the PCB (4) through a laser module, and windowing the residual sealing glue on the surface and the periphery of the LED to be repaired; Removing, namely separating and removing the LED to be repaired from the bonding pad through the pressing needle; cleaning, namely cleaning the welding disc through a laser module, removing residual sealing glue, and melting residual tin of the welding disc; the dispensing step, namely switching the dispensing needle to a working state through a tool switching mechanism, dipping the dispensing needle in the soldering flux from a material box (7) of the soldering flux, and adhering the soldering flux to the surface of the bonding pad; Switching a suction nozzle in the vacuum pick-and-place assembly to a working state through a tool switching mechanism, so that the suction nozzle sucks a new LED from a material box (7) to be placed on a bonding pad, and removing the suction nozzle; welding, namely welding the LEDs through a laser module; And detecting, namely switching the probes into a working state through a tool switching mechanism, enabling the paired probes to respectively contact with bonding pads on two sides below the LED, ending the repair of the LED if the LED is lighted, and repeating the steps if the LED is not lighted.
  10. 10. The method of claim 9, wherein before the welding step, the press pin is switched to the working state by a tool switching mechanism, so that the end of the press pin presses down the LED.

Description

Small miniLED module repairing device and repairing method Technical Field The invention belongs to the technical field of miniLED module repair, and particularly relates to a small miniLED module repair device and a repair method. Background MiniLED module is an LED display technology, which uses smaller size LED chips and higher height arrangements, typically about 100-200 microns in size. This allows more LED chips to be accommodated within the same area, thus achieving higher pixel density and higher resolution, and miniLED modules have higher brightness, higher contrast, and better color performance than conventional LED modules. And miniLED, the display modules which are just welded in batches are repaired in order to ensure the yield of the factory. At this time, the circuit element is exposed, and after the repairing device lights the display module, the damaged miniLED position can be clearly seen through the industrial camera, and the repairing device repairs the damaged miniLED position. However, the existing miniLED module repairing equipment is large in size, and can only repair bare LEDs which have just been welded, but cannot repair the PCB which has been sealed. Disclosure of Invention The invention aims to solve the problems and provide a small miniLED module repairing device and a repairing method which are simple in structure and reasonable in design. The invention realizes the above purpose through the following technical scheme: in a first aspect, the present invention provides a compact miniLED module repair device, comprising: the clamp is used for clamping and fixing the PCB to be repaired; the displacement mechanism is used for driving the displacement adjustment of the clamp in the horizontal plane, and the displacement mechanism and the clamp are respectively arranged in a lower chassis of the repairing device; The repairing operation mechanism is arranged in the upper chassis of the repairing device and is located above the clamp, and the repairing operation mechanism is used for sequentially performing glue removal, cleaning, glue dispensing, welding and detection operations on the damaged LEDs on the PCB. As a further optimization scheme of the invention, the repairing operation mechanism comprises a tool switching mechanism, a laser module, a vacuum pick-and-place assembly, a pressing needle, a dispensing needle and a probe, wherein the tool switching mechanism is used for switching the working states of the pressing needle, the dispensing needle, the probe and a suction nozzle in the vacuum pick-and-place assembly at a repairing position, and the laser module is used for removing sealing glue and welding an LED. As a further optimization scheme of the invention, the shifting mechanism comprises an X axial shifting component, a Y axial shifting component and an R axial shifting component, wherein the output end of the X axial shifting component is in transmission connection with a first supporting plate, the Y axial shifting component is arranged on the first supporting plate, the output end of the Y axial shifting component is in transmission connection with a second supporting plate, the R axial shifting component is arranged on the second supporting plate, the output end of the R axial shifting component is in transmission connection with a clamp, the shifting directions of the X axial shifting component and the Y axial shifting component are respectively positioned in a horizontal plane and are mutually perpendicular, and the shifting direction of the R axial shifting component is positioned in a vertical plane. As a further optimization scheme of the invention, the X-axis displacement assembly comprises an X-axis motor, a sliding block, a screw rod, a sliding seat and a sliding rail, wherein the output end of the X-axis motor is in transmission connection with the screw rod, two ends of the screw rod are rotatably erected on a machine body of the lower machine case, the screw rod is in threaded connection with the sliding seat, the upper end of the sliding seat is fixedly connected with a first supporting plate, the side end of the first supporting plate is fixedly connected with the sliding block, the sliding block is in sliding connection with the sliding rail, and the sliding rail is fixedly arranged on the machine body of the lower machine case. As a further optimization scheme of the invention, the R axial displacement assembly comprises an R shaft motor and a speed reducer, wherein the R shaft motor is arranged on the second supporting plate, the output end of the R shaft motor is in transmission connection with the speed reducer, and the output end of the speed reducer is in transmission connection with the clamp. As a further optimization scheme of the invention, one side of the R-axis motor is provided with a band-type brake electromagnet, and the band-type brake electromagnet is arranged on the second supporting plate. As a further optimization scheme of the inv