Laser repair machine applied to display panel

Abstract

The utility model relates to a kind of laser repair machines applied to display panel, including workbench, repair host computer and detection component.Workbench is provided with bearing surface, and laser lens in repair host computer is located above workbench.Detection component includes pressing rod, distance sensor and two mobile seats, and two mobile seats are movably set on the opposite sides of workbench, and mobile seat is provided with waist type hole, and pressing rod is located above bearing surface, and the both ends of pressing rod are respectively threaded in two waist type holes, and distance sensor is used to detect the interval between pressing rod and bearing surface.By the length direction of pressing rod in detection component along bearing surface movement, and the interval between pressing rod and bearing surface is detected by distance sensor, whether there is warping deformation on display panel is further detected, to avoid collision between laser lens and warping deformation area on display panel in translation process, and the service life of the laser repair is improved.

Description

Technical Field

[0001] This utility model relates to the field of display device manufacturing technology, and in particular to a laser repair machine for display panels. Background Technology

[0002] During the display panel manufacturing process, laser repair machines are used to repair defective lines on the display panel. This involves using a laser to remove the defective lines so that they can be repaired later. (Refer to...) Figure 1 As shown, an existing laser repair machine includes a worktable 1', a repair main unit, and pressure rods 3'. The repair main unit includes a laser lens 2' for emitting laser light, which is movably positioned above the worktable 1'. During repair, the display panel 4' is placed horizontally on the worktable 1', and then the two pressure rods 3' press down on opposite ends of the display panel 4' to fix it in place. Finally, the laser lens 2' is lowered to a position close to the display panel 4' to remove defective lines on the display panel 4'.

[0003] Existing laser repair machines have the following shortcomings: The display panel 4' underwent a photolithography process in the previous stage. During the drying process of the photoresist, the display panel 4' is subjected to high-temperature baking, which causes warping and deformation in some areas of the display panel 4'. During laser repair, the laser lens 2' needs to be moved across the display panel 4' to move it one by one to the position requiring repair. During the translation process of the laser lens 2', if the deformation of the warped area on the display panel 4' exceeds the actual distance between the laser lens 2' and the display panel 4', the laser lens 2' will collide with the warped area on the display panel 4', resulting in damage to the laser lens 2' and reducing the service life of the equipment. Utility Model Content

[0004] The purpose of this invention is to provide a laser repair machine for display panels, which can prevent the laser lens from colliding with the warped area of ​​the display panel, thereby improving the service life of the equipment.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A laser repair machine for display panels is provided, comprising:

[0007] A workbench, wherein the workbench is provided with a support surface for placing a display panel;

[0008] A repair host, the repair host including a laser lens for repairing display panels, the laser lens being located above the workbench;

[0009] The detection assembly includes a pressure rod, a distance sensor, and two movable seats. The two movable seats are movably disposed on opposite sides of the worktable and can move along the length of the worktable. Each movable seat has an oblong hole. The pressure rod is located above the bearing surface, with its two ends passing through the two oblong holes, allowing it to move closer to or further away from the bearing surface. The distance sensor is mounted on the movable seat and is used to detect the distance between the pressure rod and the bearing surface.

[0010] As a preferred embodiment of a laser repair machine for display panels, it further includes a clamping assembly, which includes a first driving member disposed on the movable base and a pressure plate disposed at the output end of the first driving member. The first driving member drives the pressure plate to move toward the pressure rod so that the pressure rod presses the display panel.

[0011] As a preferred embodiment of a laser repair machine for display panels, the clamping assembly further includes a spring disposed between the first drive member and the pressure plate.

[0012] As a preferred embodiment of a laser repair machine for display panels, the detection assembly further includes a second driving member. The movable base includes a slider and a support plate disposed on the slider. The oblong hole is disposed on the support plate. The slider is slidably connected to the end face of the worktable in the width direction. The second driving member is connected to the slider and is used to drive the slider to move along the length direction of the worktable.

[0013] As a preferred embodiment of a laser repair machine for display panels, the detection assembly further includes an alarm device electrically connected to the distance sensor, which is disposed on the slider and located below the pressure rod.

[0014] As a preferred embodiment of a laser repair machine for display panels, the second driving component includes a rack and a driving gear meshing with the rack, the rack being disposed on the worktable and the driving gear being disposed on the slider.

[0015] As a preferred embodiment of a laser repair machine for display panels, there are two detection components, which are respectively located at both ends of the worktable along its length.

[0016] As a preferred embodiment of a laser repair machine for display panels, the movable seats in both of the detection components move forward from the end of the worktable toward the center along the length direction, and the top of the waist-shaped hole is tilted backward relative to the bottom end along the forward direction of the movable seats.

[0017] As a preferred embodiment of a laser repair machine for display panels, it also includes support rods, wherein multiple support rods are elliptically mounted on the bearing surface, and the top of the support rods is used to support the display panel.

[0018] As a preferred embodiment of a laser repair machine for display panels, a limiting component is provided on the worktable, and the limiting component abuts against the end of the display panel in the length direction.

[0019] The advantages of this utility model compared to the prior art are:

[0020] This invention relates to a laser repair machine for display panels. By setting a detection component on the worktable, the machine uses a pressure rod in the detection component to move along the length of the bearing surface, and a distance sensor to detect the distance between the pressure rod and the bearing surface, thereby detecting whether there is warping deformation on the display panel. This avoids the laser lens from colliding with the warped area on the display panel during translation, thus improving the service life of the laser repair. Attached Figure Description

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of a laser repair machine in the prior art.

[0023] Figure 2 This is a schematic diagram of a laser repair machine applied to a display panel according to an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of the installation of the workbench and detection components according to an embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram of the installation of the detection component and the clamping component according to an embodiment of the present invention.

[0026] Figure 5 This is a schematic diagram of the movable base according to an embodiment of the present utility model.

[0027] Figure 1 middle:

[0028] 1′, Workbench; 2′, Laser lens; 3′, Pressure rod; 4′, Display panel.

[0029] Figures 2 to 5 middle:

[0030] 1. Worktable; 10. Bearing surface; 11. Slide groove; 2. Detection component; 21. Moving seat; 211. Slider; 212. Support plate; 213. Waist-shaped hole; 22. Second drive component; 221. Rack; 23. Pressure rod; 24. Distance sensor; 3. Clamping component; 31. First drive component; 32. Pressure plate; 33. Spring; 4. Laser lens; 5. Support rod; 6. Display panel; 7. Limiting component. Detailed Implementation

[0031] The advantages and features of this invention, as well as methods of implementing them, will become apparent from the following detailed description of the embodiments in conjunction with the accompanying drawings. However, this invention is not limited to the embodiments disclosed below, but can be implemented in various different forms. These embodiments are provided merely to complete the disclosure of this invention and to enable those skilled in the art to fully understand its scope, which is defined only by the scope of the claims. The same reference numerals denote the same constituent elements throughout the specification.

[0032] The present invention will now be described in detail with reference to the accompanying drawings.

[0033] like Figures 2 to 4 As shown, a laser repair machine (hereinafter referred to as the laser repair machine) for display panels is provided for repairing defective lines on display panel 6. The laser repair machine includes a worktable 1, a repair host, and a detection component 2. The worktable 1 supports the display panel 6, and the repair host is located above the worktable 1. The repair host includes a laser lens 4 capable of emitting laser light towards the display panel 6 and a drive component for driving the laser lens 4. The laser lens 4 removes defective lines on the display panel 6 by emitting laser light. The drive component is existing technology and can be a gear-rack mechanism, cylinder, electric telescopic component, lead screw-slider mechanism, etc. The drive component is used to drive the laser lens 4 to move up and down and translate horizontally. The detection component 2 is used to detect whether the display panel 6 has warped or deformed, to avoid the laser lens 4 colliding with warped or deformed areas on the display panel 6 during translation. In this embodiment, the repair host is existing technology, capable of emitting laser light and identifying and locating the repair position on the display panel 6. The specific structure and working principle of the repair host will not be described in detail here.

[0034] The worktable 1 has a cuboid structure. The length direction of the worktable 1 is defined as the X direction, the width direction as the Y direction, and the height direction as the Z direction. The top surface of the worktable 1 is configured as a support surface 10 for placing the display panel 6. The shape of the support surface 10 corresponds to that of the display panel 6; that is, the length directions of the support surface 10 and the display panel 6 correspond to the length direction of the worktable 1, and the width directions of the support surface 10 and the display panel 6 correspond to the width direction of the worktable 1.

[0035] The detection component 2 includes a movable base 21, a pressure rod 23, and a distance sensor 24. There are two movable bases 21, respectively disposed on opposite sides of the worktable 1. In this embodiment, the two movable bases 21 are spaced apart along the width direction of the worktable 1. The movable bases 21 are movably connected to the worktable 1, allowing them to move along the length direction of the worktable 1. Each movable base 21 has a slotted hole 213. The pressure rod 23 is located above the bearing surface 10, with both ends passing through corresponding slotted holes 213 on the two movable bases 21. The two ends of the slotted holes 213 are vertically distributed along their length direction. Under its own weight, the pressure rod 23 is located at the bottom end of the slotted hole 213. When the pressure rod 23 is subjected to an upward external force, it can move upward along the length direction of the slotted hole 213, allowing it to move closer to or further away from the bearing surface 10. Distance sensor 24 is mounted on the movable base 21. Distance sensor 24 is existing technology and can measure distance using methods such as laser ranging, ultrasonic ranging, and infrared ranging. Distance sensor 24 is used to detect the distance between the pressure rod 23 and the bearing surface 10.

[0036] Understandably, during rework, the display panel 6 is placed on the support surface 10. The laser lens 4 descends to a position close to the display panel 6 and is horizontally moved to reach the location requiring rework. A detection assembly 2 is installed on the worktable 1, with both ends of the pressure rod 23 mounted in the oblong hole 213 on the moving base 21. The relative position of the pressure rod 23 within the oblong hole 213 is used to detect whether the display panel 6 has bending deformation. Initially, the pressure rod 23 remains at the bottom of the oblong hole 213 under its own weight, and it abuts against the surface of the display panel 6. The moving base 21 moves the pressure rod 23 along the length of the worktable 1, causing it to roll along the surface of the display panel 6. When the display panel 6 has warped deformation, the gap between the warped portion and the support surface 10 increases, and the pressure rod 23 moves upward along the surface of the warped portion, causing it to move upward along the length of the oblong hole 213. Furthermore, by setting a distance sensor 24, the distance between the pressure rod 23 and the bearing surface 10 can be obtained by detecting the upward movement distance of the pressure rod 23. The distance between the pressure rod 23 and the bearing surface 10 corresponds to the relative height of the warped deformation area (the thickness of the display panel 6 itself can be ignored here), which allows it to determine whether the laser lens 4 will collide with the warped part of the display panel 6 during translation. It should be noted that the display panel 6 is prone to warping deformation after high-temperature drying in the previous process. In this embodiment, the actual detection content is whether the deformation of the display panel 6 exceeds the numerical range for the laser lens 4 to safely pass through. For example, if the distance between the laser lens 4 and the display panel 6 is 5mm, and the safe distance between the laser lens 4 and the display panel 6 is set to 4mm, then when the distance sensor 24 detects that the deformation of the display panel 6 exceeds 4mm, the system will issue an alarm and stop the rework operation.

[0037] Specifically, the detection component 2 further includes a second driving member 22, which drives the movable seat 21 to move on the worktable 1. The movable seat 21 includes a slider 211 and a support plate 212, with the support plate 212 disposed on the top of the slider 211. Slide grooves 11 are provided on both end faces of the worktable 1 in the width direction, with the length of the slide grooves 11 extending along the length direction of the worktable 1. The slider 211 is slidably connected to the slide grooves 11, allowing the slider 211 to slide along the length direction of the slide grooves 11. The second driving member 22 is connected to the slider 211 and drives the slider 211 to move along the length direction of the worktable 1. Specifically, the second driving member 22 includes a rack 221 and a drive gear (not shown in the figure). The rack 221 is horizontally disposed on the end face of the worktable 1 in the width direction, and the drive gear is disposed on the slider 211 and connected to a drive motor, meshing with the rack 221. The drive gear and the rack 221 constitute a conventional gear-rack drive mechanism. In this embodiment, by installing moving parts such as the movable seat 21 and the second driving component 22 on the end face of the worktable 1, sufficient space can be left above the bearing surface 10 to avoid interference with the movement of the laser lens 4 and to prevent impurities generated by friction of the moving parts from falling onto the display panel 6.

[0038] Specifically, the detection component 2 also includes an alarm device (not shown in the figure), which includes a buzzer, a warning light, etc. The alarm device is electrically connected to the distance sensor 24. When the deformation detected by the distance sensor 24 exceeds a set value, an alarm is issued through the alarm device to remove the display panel 6 from the laser repair machine. The oblong hole 213 is provided on the support plate 212, and the end of the pressure rod 23 extends to the outside of the oblong hole 213. The distance sensor 24 is mounted on the slider 211 and is located below the pressure rod 23. The distance sensor 24 can measure the distance between its own position and the pressure rod 23, thereby obtaining the distance between the pressure rod 23 and the bearing surface 10.

[0039] Specifically, the laser repair machine also includes a clamping assembly 3, which is used to press the pressure rod 23 against the bottom of the oblong hole 213 and press the pressure rod 23 against the display panel 6 on the bearing surface 10. The clamping assembly 3 includes a first driving member 31, a pressure plate 32, and a spring 33. The first driving member 31 is a telescopic device such as a pneumatic cylinder or hydraulic cylinder. The first driving member 31 is mounted on the support plate 212 and is located above the oblong hole 213. The pressure plate 32 is installed at the output end of the first driving member 31 so that the first driving member 31 can drive the pressure plate 32 to move downward. The pressure plate 32 is an arc-shaped plate whose shape matches the surface of the pressure rod 23 so that the pressure plate 32 and the pressure rod 23 fit tightly together. The two ends of the spring 33 are connected to the first driving member 31 and the pressure plate 32 respectively, so that the pressure plate 32 is clamped by the elastic force of the spring 33, avoiding excessive force on the display panel 6 by the pressure rod 23. Of course, in some embodiments, the spring 33 can be omitted, and the pressure plate 32 can be directly driven by the first driving member 31 to press the pressure rod 23. In this embodiment, after the detection component 2 has completed the detection of the warping deformation of the display panel 6, the moving seat 21 moves to a position close to the end of the worktable 1 along its length, and the pressure rod 23 abuts against the end of the display panel 6. The first driving member 31 drives the pressure plate 32 to move toward the pressure rod 23, and presses the pressure rod 23 against the bottom end of the waist-shaped hole 213. At this time, the pressure rod 23 presses the display panel 6 against the bearing surface 10 to fix the display panel 6.

[0040] Specifically, refer to Figure 3 and Figure 5 As shown, there are two detection components 2, which are respectively located at both ends of the worktable 1 along its length. By setting two detection components 2, two pressure rods 23 can be used to press down on both ends of the display panel 6 to reliably fix the display panel 6. During detection, the two detection components 2 move from the ends of the display panel 6 towards the middle along its length, that is, each detection component 2 detects whether half of the display panel 6 has warping deformation exceeding the safe range. In this embodiment, initially, the pressure rods 23 are located at the ends of the display panel 6. During detection, along the length of the display panel 6, the pressure rods 23 move from the ends of the display panel 6 to the middle, that is, the direction of advance of the detection component 2 is from the ends to the middle of the display panel 6. Correspondingly, the direction of retreat of the detection component 2 is from the middle to the ends of the display panel 6.

[0041] Along the forward direction of the movable seat 21, the top end of the oblong hole 213 is tilted backward relative to the bottom end. In this embodiment, the oblong hole 213 is tilted, that is, the centerline of the oblong hole 213 forms an angle α with the vertical direction. During the testing process, when there is warping deformation on the display panel 6, the pressure rod 23 is resisted by the warped portion and moves upward. By tilting the oblong hole 213, the pressure rod 23 can more easily move towards the top end of the oblong hole 213, avoiding the pressure rod 23 directly pushing the display panel 6 to move on the bearing surface 10 because it cannot move upward.

[0042] Specifically, refer to Figure 2 and Figure 3 As shown, the laser repair machine also includes support rods 5 and limiting members 7. Support rods 5 are used to temporarily support the display panel 6. Multiple support rods 5 are arranged in an array on the bearing surface 10. The support rods 5 are height-adjustable on the worktable 1, allowing them to move up and down relative to the bearing surface 10. When picking up or placing the display panel 6, the support rods 5 rise so that their tops are above the bearing surface 10, allowing the display panel 6 to be placed on top. The purpose of the support rods 5 is to maintain a distance between the display panel 6 and the bearing surface 10 during pickup or placement, facilitating avoidance of the robotic arm used to transport the display panel 6. During rework, the support rods 5 descend so that their tops are below the bearing surface 10, allowing the display panel 6 to be placed on the bearing surface 10. The limiting members 7 are used to restrict the position of the display panel 6, and their structure is similar to that of the support rods 5. The limiting members 7 are height-adjustable on the worktable 1, with limiting members 7 located at both ends of the worktable 1 along its length. When the detection component 2 moves along the length of the worktable 1, the limiting member 7 rises and abuts against the end of the display panel 6 along its length. By setting the limiting member 7, the display panel 6 is blocked, preventing displacement of the display panel 6 under the pushing action of the pressure rod 23. Figure 2 For example, when the detection component 2 on the left side of the figure moves forward, the limit component 7 on the right side of the worktable 1 rises; when the detection component 2 on the right side of the figure moves forward, the limit component 7 on the left side of the worktable 1 rises.

[0043] Although embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above embodiments, but can be made in various forms, and those skilled in the art will understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential characteristics of the present invention. Therefore, it should be understood that the above embodiments are exemplary in all respects and not restrictive.

Claims

1. A laser repair machine for display panels, characterized in that, include: A workbench, wherein the workbench is provided with a support surface for placing a display panel; A repair host, the repair host including a laser lens for repairing display panels, the laser lens being located above the workbench; The detection assembly includes a pressure rod, a distance sensor, and two movable seats. The two movable seats are movably disposed on opposite sides of the worktable and can move along the length of the worktable. Each movable seat has an oblong hole. The pressure rod is located above the bearing surface, with its two ends passing through the two oblong holes, allowing it to move closer to or further away from the bearing surface. The distance sensor is mounted on the movable seat and is used to detect the distance between the pressure rod and the bearing surface.

2. The laser repair machine for display panels according to claim 1, characterized in that, It also includes a pressing assembly, which includes a first driving member disposed on the movable base and a pressure plate disposed at the output end of the first driving member. The first driving member drives the pressure plate to move toward the pressure rod so that the pressure rod presses against the display panel.

3. The laser repair machine for display panels according to claim 2, characterized in that, The clamping assembly also includes a spring, which is disposed between the first driving member and the pressure plate.

4. The laser repair machine for display panels according to claim 1, characterized in that, The detection assembly further includes a second driving member. The movable seat includes a slider and a support plate disposed on the slider. The waist-shaped hole is disposed on the support plate. The slider is slidably connected to the end face of the worktable in the width direction. The second driving member is connected to the slider and is used to drive the slider to move along the length direction of the worktable.

5. The laser repair machine for display panels according to claim 4, characterized in that, The detection component also includes an alarm device, which is electrically connected to the distance sensor, which is disposed on the slider and located below the pressure rod.

6. The laser repair machine for display panels according to claim 4, characterized in that, The second driving component includes a rack and a driving gear meshing with the rack. The rack is disposed on the worktable, and the driving gear is disposed on the slider.

7. The laser repair machine for display panels according to claim 1, characterized in that, There are two detection components, which are respectively located at both ends of the worktable along its length.

8. The laser repair machine for display panels according to claim 7, characterized in that, Both of the moving seats in the two detection components move forward from the end of the worktable toward the center along the length direction, and the top of the waist-shaped hole is tilted backward relative to the bottom end along the forward direction of the moving seats.

9. The laser repair machine for display panels according to any one of claims 1 to 8, characterized in that, It also includes support rods, and multiple support rods are elliptically mounted on the bearing surface, with the top of the support rods used to support the display panel.

10. The laser repair machine for display panels according to any one of claims 1 to 8, characterized in that, The workbench is equipped with a height-adjustable limiting component, which abuts against the end of the display panel along its length.

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