Laser repairing equipment for Micro LED driving circuit

Abstract

The utility model relates to a laser repairing device for a Micro LED drive circuit. The laser repairing device comprises a portal frame, a working platform assembly, a light box assembly and a spraying assembly. The portal frame is installed on the side, close to the Y-axis negative direction, of the working platform, the light box assembly is installed on the side, in the Y-axis positive direction, of the top of the portal frame, and the spraying assembly is installed on the side, in the Y-axis positive direction and the Y-axis negative direction, of the top of the portal frame. A mechanical arm assembly is installed on the side, in the positive direction of the Y axis, of the working platform, and a rotary material receiving platform assembly is installed on the side, in the positive direction of the X axis, of the mechanical arm assembly. According to the utility model, short circuit and open circuit defects of the front and back surfaces and the side leads of the Micro LED driving circuit can be efficiently and accurately repaired.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic information related technical field especially, it relates to a kind of laser repair equipment of Micro LED drive circuit. BACKGROUND

[0002] Electronic information industry is the key basic industry of economic and social high-quality development, digital transformation.New display field is an important part.

[0003] In new display field, Micro LED display has the characteristics of self-luminous, high efficiency, low power consumption, high stability, is an important choice of next-generation mainstream display technology, and has the potential to replace existing technology in many fields.Micro LED array can reach ultra-high-density pixels and have the characteristics of self-luminous, compared with OLED and LCD, has higher luminous efficiency, longer life and higher brightness, while having the advantages of lightness, power saving and all-weather use, and will be widely used in display field.

[0004] Micro LED display technology currently has many problems, for example, the number of micro LED array is huge, and it cannot be manufactured by traditional SMT method due to efficiency problems.In addition, it needs to use CMOS integrated circuit technology to control a large number of micro LED beads to make display drive circuit.The current mainstream method is to use glass as substrate, to make drive circuit on the front and back surfaces respectively by multiple exposure, and then to make a layer of metal conductive film on the glass sidewall by evaporation, and the film layer extends from the glass sidewall to the drive circuit on the front and back surfaces of the glass, and then to etch the metal film on the glass sidewall, front and back surfaces by laser dry etching technology, so that the drive circuit on the front surface is connected with the drive circuit on the back surface through the wire on the sidewall.In mass production, short circuit and open circuit defects will occur in individual lines, which need to be repaired by micro circuit repair equipment.

[0005] In summary, the existing problems in the prior art are:

[0006] The traditional repair equipment has single function, especially for open circuit repair, which is complex and needs several equipment to complete, causing waste of time cost;The laser repair, silver paste spraying and plastic encapsulation glue spraying processes are integrated in one device, the stage can rotate, the robot can automatically turn over, load and unload, multiple surface processing can be realized, and the precision meets the processing requirement of plus or minus 1 micrometer.

[0007] In view of the above defects, the present invention actively researches and innovates to create a Micro LED drive circuit laser repair equipment, which has more industrial value. INVENTION CONTENTS

[0008] To solve any one of the above technical problems, the utility model discloses a kind of laser repair equipment of Micro LED drive circuit.

[0009] To achieve the above object, the utility model adopts following technical solutions:

[0010] Laser repair equipment of Micro LED drive circuit, including portal frame, work platform component, light box component and spraying component;

[0011] Work platform component includes work platform, portal frame is installed on the work platform side close to Y axis negative direction, light box component is installed on the top of portal frame along Y axis positive direction side, spraying component is installed on the top of portal frame along Y axis positive and negative direction side;

[0012] Y axis module and X axis module are sequentially installed on the work platform from below, sliding plate is installed on X axis module;

[0013] Mechanical hand component is installed on the work platform along Y axis positive direction side, rotary receiving platform component is installed on the mechanical hand component along X axis positive direction side, rotary receiving platform component includes platform support, hollow rotary motor is installed on the bottom of platform support, alignment rotary platform is installed on the top of platform support, and the drive end of hollow rotary motor top is connected with the alignment rotary platform above through hollow rotary platform.

[0014] As further improvement of the utility model, overturning loading platform component is provided on the sliding plate, overturning loading platform component includes loading platform base installed on the sliding plate, first loading platform is installed on the top of loading platform base through loading platform support, loading platform base is provided with loading platform base on the side along Y axis positive direction, second loading platform is installed on the outside of loading platform base, and overturning motor installed on the loading platform base drives loading platform base overturning through screw rod module and connecting rod mechanism.

[0015] As further improvement of the utility model, rotary motor installed on the inside of loading platform base drives second loading platform rotation on the outside of loading platform base through speed reducer.

[0016] As further improvement of the utility model, connecting rod mechanism includes connecting rod, the top of connecting rod is hinged on the inside of loading platform base, the bottom of connecting rod is hinged on guide rail movable plate, and the bottom of guide rail movable plate is connected with guide rail component installed on the loading platform base along Y axis direction.

[0017] As further improvement of the utility model, light box component includes upper light box and lower light box, first laser and second laser are installed on the both sides of upper light box respectively.

[0018] As further improvement of the utility model, objective lens component is installed on the bottom of lower light box.

[0019] As a further improvement of the utility model, at least one alignment camera is installed on the platform support on the side below the alignment rotation platform, and the alignment camera is freely moved in the Y-axis direction under the action of the camera linear motor.

[0020] As a further improvement of the utility model, the spraying assembly comprises a spraying base plate installed on the portal frame, a spraying Z-axis module is installed on the spraying base plate, the spraying Z-axis module drives the spraying slide plate to move in the Z-axis direction, and a glue coating valve and a silver paste valve are installed on the spraying slide plate.

[0021] As a further improvement of the utility model, a spraying camera and an altimeter are further installed on the spraying slide plate.

[0022] By the above scheme, the utility model has at least the following advantages:

[0023] The utility model can efficiently and accurately repair short circuit and open circuit defects of Micro LED driving lines on the front and back surfaces and side edges, mainly because:

[0024] 1. The coaxial laser processing system can accurately position and remove excess line materials, realize repair of short circuit parts, and remove excess lines when repairing broken lines, thereby ensuring the consistency of the repaired line width.

[0025] 2. The silver paste spraying head sprays controllable silver paste liquid beads in volume and quantity to the specified position.

[0026] 3. The curing laser also passes through the coaxial image system to realize curing of the liquid silver paste.

[0027] 4. The reversible processing platform can repair and process line on eight surfaces, including the front and back surfaces, the side surface, and the 45-degree surface.

[0028] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, and the content of the specification can be implemented, the following will be explained in detail with the preferred embodiment of the utility model and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment, it should be understood that the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for the ordinary skilled person in the art, under the premise of not paying the creative labor, other related drawings can also be obtained according to these drawings.

[0030] Figure 1is a structure schematic view of a laser repair equipment of a Micro LED driving circuit;

[0031] Figure 2 is Figure 1 is a structure schematic view of a work platform assembly in the middle;

[0032] Figure 3 is Figure 1 is a structure schematic view of a light box assembly in the middle;

[0033] Figure 4 is Figure 1 is a structure schematic view of a turnover loading platform assembly in the middle;

[0034] Figure 5 is Figure 1 is a structure schematic view of a rotary material receiving platform assembly in the middle;

[0035] Figure 6 is Figure 1 is a structure schematic view of a spraying assembly in the middle;

[0036] Figure 7 is a schematic view before short circuit repair of the utility model;

[0037] Figure 8 is a schematic view after short circuit repair of the utility model;

[0038] Figure 9 is a schematic view of the broken circuit to be repaired of the utility model;

[0039] Figure 10 is a schematic view when spraying repair of the utility model;

[0040] Figure 11 is a schematic view when laser removes the excess part of the utility model;

[0041] Figure 12 is a product schematic view of the utility model.

[0042] In the figure, the meaning of each reference sign is as follows.

[0043] Gantry 1, work platform assembly 2, light box assembly 3, turnover loading platform assembly 4, mechanical arm assembly 5, rotary material receiving platform assembly 6, spraying assembly 7;

[0044] Work platform 21, Y-axis module 22, X-axis module 23, sliding plate 24;

[0045] First laser 31, second laser 32, upper light box 33, lower light box 34, objective lens assembly 35;

[0046] Carrying base 41, turnover motor 42, first carrying platform 43, second carrying platform 44, rotating motor 45, speed reducer 46, screw module 47, guide rail assembly 48;

[0047] Platform support 61, hollow rotating motor 62, hollow rotating platform 63, alignment rotating platform 64, alignment camera 65;

[0048] Spraying substrate 71, spraying Z-axis module 72, spraying camera 73, height gauge 74, glue coating valve 75, silver paste valve 76. DETAILED DESCRIPTION

[0049] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0050] In order to enable the personnel in the technical field to better understand the present application scheme, the technical scheme in the present application embodiment will be clearly and completely described below in combination with the drawings in the present application embodiment. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the present application embodiments described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by the personnel in the art without creative labor are within the scope of protection of the present application.

[0051] As shown in Figures 1-12 A laser repair equipment of a Micro LED driving circuit, including a gantry 1, a workbench assembly 2, a light box assembly 3, a turnover carrying platform assembly 4, a mechanical arm assembly 5, a rotating receiving platform assembly 6 and a spraying assembly 7. The workbench assembly 2 includes a workbench 21, the gantry 1 is installed on the workbench 21 near one side of the negative direction of the Y axis, the light box assembly 3 is installed on the top of the gantry 1 along one side of the positive direction of the Y axis, and the spraying assembly 7 is installed on the top of the gantry 1 along one side of the positive and negative directions of the Y axis.

[0052] The Y-axis module 22 and the X-axis module 23 are sequentially installed on the workbench 21 from bottom to top, and the sliding plate 24 is installed on the X-axis module 23. The product is driven from the film placing station to the processing station through the XY axis, the zero point coordinate is established through the reading head grating ruler, and the accurate control of the product position is realized.

[0053] The mechanical arm assembly 5 is installed on one side of the work platform 21 along the positive direction of the Y axis, the rotary receiving platform assembly 6 is installed on one side of the mechanical arm assembly 5 along the positive direction of the X axis, the rotary receiving platform assembly 6 comprises a platform support 61, a hollow rotary motor 62 is installed at the bottom of the platform support 61, a positioning rotary platform 64 is installed at the top of the platform support 61, and the driving end at the top of the hollow rotary motor 62 is connected with the positioning rotary platform 64 above through a hollow rotary platform 63.

[0054] At least one alignment camera 65 is installed on the platform support 61 on one side below the positioning rotary platform 64, and the alignment camera 65 is freely movable in the Y axis direction under the action of a camera linear motor.

[0055] The turnover loading platform assembly 4 is arranged on the sliding plate 24, the turnover loading platform assembly 4 comprises a loading platform base 41 installed on the sliding plate 24, a first loading platform 43 is installed above the loading platform base 41 through a loading platform support, a loading platform base is arranged on one side of the loading platform support along the positive direction of the Y axis, a second loading platform 44 is installed on the outer side of the loading platform base, and the turnover motor 42 installed on the loading platform base 41 drives the loading platform base to overturn through a screw module 47 and a connecting rod mechanism. The rotary motor 45 installed on the inner side of the loading platform base drives the second loading platform 44 located on the outer side of the loading platform base to rotate through a speed reducer 46, so that the rotation fine adjustment is realized, and the product is guaranteed to be parallel to the objective lens switching shaft and the crossbeam of the spraying assembly 7.

[0056] The connecting rod mechanism comprises a connecting rod, the top of the connecting rod is hinged to the inner side of the loading platform base, the bottom of the connecting rod is hinged to a guide rail movable plate, and the bottom of the guide rail movable plate is connected with a guide rail assembly 48 installed on the loading platform base 41 along the Y axis direction.

[0057] The light box assembly 3 comprises an upper light box 33 and a lower light box 34, a first laser 31 and a second laser 32 are installed on the two sides of the upper light box 33 respectively, and an objective lens assembly 35 is installed at the bottom of the lower light box 34.

[0058] The spraying assembly 7 comprises a spraying base plate 71 installed on the gantry 1, a spraying Z-axis module 72 is installed on the spraying base plate 71, the spraying Z-axis module 72 drives a spraying sliding plate to move in the Z axis direction, a glue valve 75 and a silver paste valve 76 are installed on the spraying sliding plate, and a spraying camera 73 and an altimeter 74 are also installed on the spraying sliding plate.

[0059] The working process of the utility model is briefly described as follows:

[0060] If the product is short-circuit failure such as Figure 7As shown, the feeding mechanism places the product on the alignment rotating platform 64, the vacuum adsorbs the processed product, the alignment camera 65 captures the image, then the hollow rotating motor 62 drives the alignment rotating platform 64 to rotate an angle, and the mechanical arm assembly 5 performs XY axis compensation, so that the feeding product is aligned. Then the mechanical arm assembly 5 carries the product to the first loading platform 43, and the first laser 31 emits light through the glazing box 33 and the lower light box 34 to repair the front and back lines of the product. The product is placed on the second loading platform 44 to repair the side and 45-degree edge lines. After repair, as shown, Figure 8

[0061] If the product is a short circuit defect, as shown, Figure 9 The product is moved to the spraying assembly 7 under the Y-axis module 22 and the X-axis module 23 by the turnover loading platform assembly 4, the silver paste valve 76 sprays a specified amount of silver paste to the specified position, and the spraying camera 73 can observe the processing in real time. Then the product is moved to the objective assembly 35 under the Y-axis module 22 and the X-axis module 23 by the turnover loading platform assembly 4, and the excess silver paste is removed. Then the product is moved to the spraying assembly 7 under the Y-axis module 22 and the X-axis module 23 by the turnover loading platform assembly 4, and the product is coated and sealed by the coating valve 75. After sealing, the product is moved to the objective assembly 35 under the Y-axis module 22 and the X-axis module 23 by the turnover loading platform assembly 4, and is dried under the action of the second laser 32.

[0062] The utility model can efficiently and accurately repair the short circuit and open circuit defect of the Micro LED driving line on the front and back surfaces and the side edge lead, the coaxial laser processing system can accurately position and remove the excess line material, realize the repair of the short circuit part, remove the excess line during the broken line repair, and ensure the consistency of the repair line width; the silver paste spraying head sprays controllable silver paste liquid beads to the specified position; the curing laser also passes through the coaxial image system to realize the curing of the liquid silver paste; the turnover processing loading platform can repair and process the lines on the front and back surfaces, the side surface, and the 45-degree surface.

[0063] ​In the description of the utility model, need understanding is, the term "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "internal", "external" and so on indicate the orientation or positional relation based on the orientation or positional relation shown in the drawing, just for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the indicated device or element must have a particular orientation, construct and operate in a particular orientation, therefore can not be understood as the limitation of the utility model. In addition, the term "first", "second" and so on are only for the purpose of description, and can not be understood as indicating or implying relative importance or implying the number of the indicated technical features. Therefore, the features limited by "first", "second" and so on can be explicitly or implicitly included one or more features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0064] In the description of the utility model, it should be pointed out that, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected, can be mechanically connected, can be electrically connected, can be directly connected, can be indirectly connected through an intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.

[0065] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model, it should be pointed out that, for ordinary skilled in the art, on the premise of not departing from the technical principles of the utility model, can make several improvements and variations, these improvements and variations also should be regarded as the protection scope of the utility model.

Claims

1. A laser repair device for Micro LED driving circuits, comprising a gantry (1), a work platform assembly (2), a light box assembly (3), and a spraying assembly (7); Its features are: The work platform assembly (2) includes a work platform (21), the gantry (1) is installed on the work platform (21) on the side close to the negative direction of the Y axis, the light box assembly (3) is installed on the top of the gantry (1) along the positive direction of the Y axis, and the spraying assembly (7) is installed on the top of the gantry (1) along the positive and negative directions of the Y axis. A Y-axis module (22) and an X-axis module (23) are installed sequentially from bottom to top on the work platform (21), and a slide plate (24) is installed on the X-axis module (23); A robotic arm assembly (5) is installed on one side of the working platform (21) along the positive Y-axis, and a rotary receiving platform assembly (6) is installed on one side of the robotic arm assembly (5) along the positive X-axis. The rotary receiving platform assembly (6) includes a platform support (61), a hollow rotary motor (62) is installed at the bottom of the platform support (61), and a positioning rotary platform (64) is installed at the top of the platform support (61). The drive end at the top of the hollow rotary motor (62) is connected to the positioning rotary platform (64) above through the hollow rotary platform (63).

2. The laser repair equipment for Micro LED driving circuits as described in claim 1, characterized in that, A flip platform assembly (4) is provided on the slide plate (24). The flip platform assembly (4) includes a platform base (41) mounted on the slide plate (24). A first platform (43) is mounted on the platform base (41) via a platform bracket. A platform base is provided on one side of the platform bracket along the positive Y-axis. A second platform (44) is mounted on the outside of the platform base. A flip motor (42) mounted on the platform base (41) drives the platform base to flip via a lead screw module (47) and a linkage mechanism.

3. The laser repair equipment for Micro LED driving circuits as described in claim 2, characterized in that, A rotary motor (45) installed inside the platform base drives a second platform (44) located outside the platform base to rotate via a reducer (46).

4. The laser repair equipment for Micro LED driving circuits as described in claim 2, characterized in that, The linkage mechanism includes a link, the top of which is hinged to the inside of the platform base, and the bottom of which is hinged to a guide rail movable plate. The bottom of the guide rail movable plate is connected to a guide rail assembly (48) mounted on the platform base (41) along the Y-axis direction.

5. The laser repair equipment for Micro LED driving circuits as described in claim 1, characterized in that, The optical box assembly (3) includes an upper optical box (33) and a lower optical box (34), with a first laser (31) and a second laser (32) respectively installed on both sides of the upper optical box (33).

6. The laser repair equipment for Micro LED driving circuits as described in claim 5, characterized in that, An objective lens assembly (35) is mounted at the bottom of the lower optical box (34).

7. The laser repair equipment for Micro LED driving circuits as described in claim 1, characterized in that, At least one alignment camera (65) is mounted on a platform support (61) on one side below the alignment rotation platform (64), and the alignment camera (65) moves freely in the Y-axis direction under the action of the camera linear motor.

8. The laser repair equipment for Micro LED driving circuits as described in claim 1, characterized in that, The spraying assembly (7) includes a spraying substrate (71) mounted on a gantry (1), a spraying Z-axis module (72) mounted on the spraying substrate (71), the spraying Z-axis module (72) drives the spraying slide to move in the Z-axis direction, and an adhesive valve (75) and a silver paste valve (76) are mounted on the spraying slide.

9. The laser repair equipment for Micro LED driving circuits as described in claim 8, characterized in that, A spraying camera (73) and a height measuring instrument (74) are also installed on the spraying plate.

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