Quick die changing platform of Micro-LED (Light Emitting Diode) huge transfer printing device

Abstract

The utility model discloses a quick die changing platform of a Micro-LED (light-emitting diode) huge transfer printing device, which comprises a bottom die and a penetrating opening, and the penetrating opening is arranged at the upper end of the bottom die; the adsorption tank is arranged on the periphery of the penetrating opening; the upper slide is arranged at the upper end of the penetrating opening; the fixing assembly comprises a step pressing plate, a balance adjusting column and a locking knob; one end of the step pressing plate is propped against the upper end of the upper slide; the balance adjusting column is arranged at the lower end of the other end of the step pressing plate; the locking knob is rotationally connected to the middle part of the step pressing plate; the balance adjusting column is in threaded connection with the stepped pressing plate; and the locking knob is in threaded connection with the upper end of the bottom die. And the bottom die is replaced by arranging a quick dismounting device, so that a formula or a circular substrate is adapted. A height-adjustable step pressing plate is arranged to horizontally press the upper slide downwards, so that the upper slide is prevented from being damaged; and the upper slides with different thicknesses can be mounted. The position of the upper slide is stabilized, and the transfer printing precision can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of Micro-LED, and in particular relates to a fast mold-changing platform for a Micro-LED mass transfer device. Background Art

[0002] Micro-LED substrates generally involve two types: square and circular. Both substrates have their own advantages and disadvantages. The advantage of square substrates is that they can provide a larger effective chip area, which helps to reduce edge waste and improve overall material utilization; the advantage of circular substrates is that the design is relatively simple and suitable for traditional growth processes. There are multiple factors to consider when making a selection. First, the shape of the substrate will affect the growth and manufacturing process of Micro-LED, including the quality and uniformity of the epitaxial layer. Secondly, the shape of the substrate will affect the packaging and display effects of Micro-LED. In general, although square substrates may bring certain manufacturing challenges in the early stages, they have the advantages of increasing the effective chip area and material utilization. Circular substrates continue to play a role in certain specific application scenarios.

[0003] The Chinese patent document with publication number CN115050858A discloses a Mini / Micro LED chip pneumatic mass transfer device, which is mainly composed of a chip carrier system, a substrate carrier system and a pneumatic vision system. The chip carrier system mainly includes: a marble base, a support, an outer guide rail, a linear motor, a chip linear movement component, a longitudinal grating scale, a longitudinal grating scale reading head, a chip rotation adjustment component and a chip carrier; the substrate carrier system mainly includes: a lower grating scale, a lower grating scale reading head, an inner guide rail, an inner motor, a substrate longitudinal movement component and a substrate lateral movement component; the pneumatic vision system mainly includes: a support beam, an upper guide rail, an upper linear motor, an upper lateral movement component, a pressure regulating valve, a high-frequency solenoid valve, a lateral grating scale reading head, a lateral grating scale, a fixed seat base plate, a fixed seat, an industrial CCD camera and an air nozzle.

[0004] The above patent solution can only be used on square substrates, and its application range is relatively single. In the actual production process, square or round substrates are often faced according to the processing tasks. Not only that, according to different substrates or chips, upper glass slides of different thicknesses are also faced for installing the corresponding substrates. It can be seen that the above patent solution cannot meet the actual production needs to a certain extent. Utility Model Content

[0005] In order to overcome the technical problems in the prior art that the Micro-LED mass transfer device can only use square substrates but not circular substrates at the same time, and the thickness of the upper glass sheet is often relatively single, which is inconvenient to replace according to the substrate; one purpose of the utility model is to provide a quick mold changing platform for a Micro-LED mass transfer device, by arranging an easy-to-replace bottom mold on the frame for corresponding use of square or circular substrates, and arranging a stepped pressing plate with adjustable clamping height on the bottom mold for fixing the upper glass sheet on which the substrate is installed, thereby expanding the scope of application.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a rapid mold-changing platform for a Micro-LED mass transfer device, comprising a bottom mold, which is detachably connected to the upper end of a frame; a through-port, which is arranged at the central position of the upper end of the bottom mold; an adsorption groove, which is arranged at the upper end of the bottom mold, and the adsorption groove is located at the periphery of the through-port; an upper glass slide, which is arranged at the upper end of the through-port, and the upper glass slide completely covers and seals the adsorption groove; a fixing component, which has a plurality of fixing components and is evenly distributed on the periphery of the upper glass slide; wherein the fixing component comprises a step pressure plate with one end abutting against the upper end of the upper glass slide, a balance adjustment column arranged at the lower end of the other end of the step pressure plate, and a locking knob rotatably connected to the middle of the step pressure plate; the balance adjustment column is threadedly connected to the step pressure plate; and the locking knob is threadedly connected to the upper end of the bottom mold.

[0007] During the processing, the receiving base needs to be fitted with the substrate at a certain pressure value, and it is necessary to ensure that the relative position does not move at all. Therefore, the upper glass slide needs to have a stable positioning accuracy. At the same time, in order to prevent the upper glass slide from breaking due to stress concentration, the stepped pressure plate only acts on the upper end of the upper glass slide in a horizontal manner and with a larger pressure area to limit the vertical direction, and the adsorption groove adsorbs the upper glass slide to limit the circumferential direction.

[0008] According to the thickness of the upper glass slide, the balance adjustment column is rotated to adjust the length of the balance adjustment column extending from the step pressure plate; the locking knob is turned to make the balance adjustment column tightly pressed against the upper end of the bottom mold, and the step pressure plate tightly pressed against the upper end of the upper glass slide.

[0009] Furthermore, the bottom mold is horizontally slidably connected to the upper end of the frame; the upper end of the bottom mold is provided with a plurality of slide grooves penetrating the bottom mold, and the length direction of the slide groove is arranged along the sliding direction of the bottom mold; an insertion hole is provided at one end of the slide groove, and the diameter of the insertion hole is greater than the width of the slide groove; the upper end of the frame is threadedly connected with a plurality of screws, and the nut diameter of the screws is smaller than the diameter of the insertion hole and greater than the width of the slide groove.

[0010] Different bottom molds correspond to different substrates (square or round). The screws are loosened without being completely unscrewed. The bottom mold is slid so that the insertion hole is aligned with the screws, and the bottom mold can be conveniently taken out and replaced.

[0011] Specifically, there are four slide grooves, which are symmetrically distributed on both sides of the bottom mold;

[0012] Preferably, a plurality of embedding grooves are formed on the upper end of the bottom mold; the embedding grooves are arranged along the sliding direction of the bottom mold; the sliding grooves are located in the embedding grooves; and the diameter of the insertion hole is equal to the width of the embedding grooves.

[0013] The screws are hidden in the embedding grooves, making the upper end of the bottom mold neat and beautiful.

[0014] Furthermore, a communication port penetrating the outer wall of the bottom mold is arranged on one side of the through opening; and the penetrating direction of the communication port is arranged along the sliding direction of the bottom mold.

[0015] Through the communicating port, a substrate with a chip can be conveniently attached to the lower end of the upper glass slide.

[0016] Specifically, a side wall of the bottom mold away from the communicating port is provided with an exhaust hole; the exhaust hole is communicated with the adsorption groove.

[0017] Specifically, the frame includes a bottom plate and three side plates arranged at the upper end of the bottom plate; two adjacent side plates are perpendicular to each other; and the screws are installed at the upper ends of two opposite side plates.

[0018] Furthermore, a plurality of positioning parts are evenly distributed on the periphery of the upper glass slide; the positioning parts include three positioning posts arranged at the upper end of the bottom mold; and each of the positioning posts is respectively abutted against the outer wall of the upper glass slide.

[0019] The positioning column improves the positioning accuracy of the upper slide, simplifies the operation steps, and facilitates operation.

[0020] Specifically, a plurality of positioning holes are provided at the upper end of the bottom mold; each positioning column is located in the corresponding positioning hole; a plurality of locking screw holes are provided at the upper end of the bottom mold, which are respectively threadedly connected with the corresponding locking knobs; the positioning hole is located between the locking screw hole and the adsorption groove.

[0021] Furthermore, a step notch is provided at a lower end of one end of the step pressing plate close to the upper glass slide; and an outer edge of the upper glass slide is located in the step notch.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. By setting a quick disassembly and assembly device (slide and screw) between the frame and the bottom mold, the bottom mold can be replaced simply and quickly to adapt to square or round substrates.

[0024] 2. A height-adjustable stepped pressing plate is provided to fix the upper glass slide, so that the stepped pressing plate presses down the upper glass slide horizontally to prevent the upper glass slide from being damaged due to the inclined pressure and stress concentration; and the pressing height of the stepped pressing plate can be adjusted, so that upper glass slides of different thicknesses can be installed.

[0025] 3. The bottom mold fixes the upper glass slide circumferentially through the adsorption groove, and limits the upper glass slide in the vertical direction through the stepped pressure plate to prevent the upper glass slide from being separated from the bottom mold due to excessive bonding pressure between the receiving base and the original substrate, stabilize the position of the upper glass slide, and help improve the transfer accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the utility model;

[0027] Figure 2 It is a structural schematic diagram of the bottom mold of the utility model;

[0028] Figure 3 For the utility model Figure 1 The enlarged schematic diagram of the middle A part;

[0029] Figure 4 It is a structural schematic diagram of the step pressure plate of the utility model;

[0030] Figure 5 For the utility model Figure 2 The enlarged schematic diagram of the middle part B;

[0031] Figure 6 For the utility model Figure 2 Enlarged schematic diagram of part C in the middle.

[0032] In the figure: 1, frame; 11, bottom plate; 12, side plate; 2, bottom mold; 21, exhaust hole; 22, through-hole; 221, connecting hole; 23, adsorption groove; 24, slide groove; 241, insertion hole; 25, locking screw hole; 26, positioning hole; 27, positioning column; 28, embedding groove; 3, upper slide; 41, locking knob; 42, step pressure plate; 421, step notch; 43, balance adjustment column. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0034] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present invention and simplifying the description, and do 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 cannot be understood as limiting the specific protection scope of the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0036] In the present invention, unless otherwise specified and limited, the terms "setting", "installation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection; it can be directly connected, or it can be connected through an intermediate medium, or two elements can be internally connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] See also Figure 1-Figure 6 A rapid mold-changing platform for a Micro-LED mass transfer device comprises a frame 1, which is arranged on a horizontal displacement platform; a bottom mold 2, which is detachably connected to the upper end of the frame 1; an upper glass slide 3, which is installed at the central position of the upper end of the bottom mold 2, and a substrate is installed at the lower end of the upper glass slide 3.

[0038] A through hole 22 is provided at the central position of the upper end of the bottom mold 2; an adsorption groove 23 is provided at the upper end of the bottom mold 2 and located at the periphery of the through hole 22; the upper glass slide 3 is installed at the upper end of the through hole 22 and completely covers and seals the adsorption groove 23; an exhaust hole 21 connected to the lower end of the adsorption groove 23 is provided on the bottom mold 2.

[0039] The upper end of the bottom mold 2 is located at the periphery of the upper glass slide 3 and has multiple fixing components evenly distributed; the fixing components include a step pressure plate 42 with one end abutting against the upper end of the upper glass slide 3, a balance adjustment column 43 arranged at the lower end of the other end of the step pressure plate 42, and a locking knob 41 rotatably connected to the middle of the step pressure plate 42; the balance adjustment column 43 is threadedly connected to the step pressure plate 42; the locking knob 41 is threadedly connected to the upper end of the bottom mold 2; a step notch 421 is provided at the lower end of one end of the step pressure plate 42 close to the upper glass slide 3; the outer edge of the upper glass slide 3 is located in the step notch 421; a through threaded hole threadedly connected to the balance adjustment column 43 is provided on the step pressure plate 42; and a wrench insertion hole is provided at the upper end of the balance adjustment column 43.

[0040] The bottom mold 2 is horizontally slidably connected to the upper end of the frame 1; four slide grooves 24 penetrating the bottom mold 2 are arranged on the upper end of the bottom mold 2, and the length direction of the slide groove 24 is arranged along the sliding direction of the bottom mold 2; an insertion hole 241 is arranged at one end of the slide groove 24, and the diameter of the insertion hole 241 is greater than the width of the slide groove 24; four embedding grooves 28 are formed on the upper end of the bottom mold 2; the embedding grooves 28 are arranged along the sliding direction of the bottom mold 2; the slide groove 24 is located in the embedding groove 28; the diameter of the insertion hole 241 is equal to the width of the embedding groove 28.

[0041] The frame 1 includes a base plate 11 installed on the upper end of the horizontal displacement platform and three side plates 12 arranged on the upper end of the base plate 11; two adjacent side plates 12 are perpendicular to each other; two screws are respectively arranged on the upper ends of the two opposite side plates 12; the screws are slidably connected to the slide groove 24; the nut diameter of the screw is smaller than the diameter of the insertion hole 241 and larger than the width of the slide groove 24.

[0042] A connecting port 221 penetrating the outer wall of the bottom mold 2 is provided on one side of the through port 22 ; the penetrating direction of the connecting port 221 is provided along the sliding direction of the bottom mold 2 ; the exhaust hole 21 is located on the side wall of the bottom mold 2 away from the connecting port 221 .

[0043] There are multiple positioning parts evenly distributed on the periphery of the upper glass slide 3; the positioning parts include three positioning columns 27 arranged at the upper end of the bottom mold 2; each of the positioning columns 27 is respectively against the outer wall of the upper glass slide 3; a plurality of positioning holes 26 are arranged at the upper end of the bottom mold 2; each of the positioning columns 27 is respectively located in the corresponding positioning hole 26; a plurality of locking screw holes 25 are arranged at the upper end of the bottom mold 2, which are respectively threadedly connected with the corresponding locking knobs 41; the positioning holes 26 are located between the locking screw holes 25 and the adsorption grooves 23.

[0044] Installation process: According to the specific processing task, select the corresponding bottom mold 2 and upper glass slide 3, align the insertion hole 241 of the bottom mold 2 with the screw on the frame 1, place the bottom mold 2 on the upper end of the frame 1, push the bottom mold 2 to make the screw slide along the slide groove 24 to the other end, and tighten each screw. Then, place the upper glass slide 3 between each positioning column 27, start the solenoid valve, so that the air extraction hole 21 extracts the air in the adsorption groove 23, and the upper glass slide 3 is adsorbed on the upper end of the bottom mold 2 under the action of negative pressure. Then, screw the locking knob 41 into the locking screw hole 25, and rotate the step pressure plate 42 so that the upper glass slide 3 is located in the step notch 421. While continuously tightening the locking knob 41, rotate the balance adjustment column 43 according to the thickness of the upper glass slide 3 so that the step pressure plate 42 is pressed horizontally on the upper end of the upper glass slide 3 to complete the fixation of the upper glass slide 3.

[0045] Usage process: attach the substrate to the lower end of the upper glass slide 3, and the receiving substrate is fitted with the substrate under the drive of the lifting mechanism. While the horizontal displacement stage moves horizontally according to the preset program, laser is applied to it, and the chip on the substrate is transferred to the receiving substrate to realize the transfer process.

[0046] The above description is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any changes or modifications made by any technician in the field of the present invention are included in the patent scope of the present invention.

Claims

1. A rapid mold change platform for a Micro-LED mass transfer device, characterized in that: It includes a bottom mold, which is detachably connected to the upper end of the frame; A through opening, the through opening being arranged at the center of the upper end of the bottom mold; An adsorption groove, which is arranged at the upper end of the bottom mold and is located at the periphery of the through-hole; an upper glass slide, which is arranged at the upper end of the through-hole and completely covers and seals the adsorption groove; A fixing component, wherein the fixing components are in plurality and are evenly distributed around the periphery of the upper glass slide; Among them, the fixing assembly includes a step pressure plate with one end abutting against the upper end of the upper glass slide, a balance adjustment column arranged at the lower end of the other end of the step pressure plate, and a locking knob rotatably connected to the middle of the step pressure plate; the balance adjustment column is threadedly connected to the step pressure plate; the locking knob is threadedly connected to the upper end of the bottom mold.

2. The mold changing platform according to claim 1, characterized in that; The bottom mold is horizontally slidably connected to the upper end of the frame; a plurality of slide grooves penetrating the bottom mold are arranged at the upper end of the bottom mold, and the length direction of the slide grooves is arranged along the sliding direction of the bottom mold; an insertion hole is arranged at one end of the slide groove, and the diameter of the insertion hole is greater than the width of the slide groove; a plurality of screws are threadedly connected to the upper end of the frame, and the diameter of the nuts of the screws is smaller than the diameter of the insertion holes and greater than the width of the slide groove.

3. The mold changing platform according to claim 2, characterized in that: There are four slide grooves, which are symmetrically distributed on both sides of the bottom mold.

4. The mold changing platform according to claim 2, characterized in that: A plurality of embedding grooves are formed on the upper end of the bottom mold; the embedding grooves are arranged along the sliding direction of the bottom mold; the sliding grooves are located in the embedding grooves; and the diameter of the insertion hole is equal to the width of the embedding grooves.

5. The mold changing platform according to any one of claims 2 to 4, characterized in that: A communication port penetrating the outer wall of the bottom mold is arranged on one side of the through opening; and a penetrating direction of the communication port is arranged along the sliding direction of the bottom mold.

6. The mold changing platform according to claim 5, characterized in that: A side wall of the bottom mold away from the communicating port is provided with an air extraction hole; the air extraction hole is communicated with the adsorption groove.

7. The mold changing platform according to claim 5, characterized in that: The frame includes a bottom plate and three side plates arranged at the upper end of the bottom plate; two adjacent side plates are perpendicular to each other; and the screws are installed at the upper ends of two opposite side plates.

8. The mold changing platform according to any one of claims 1 to 4, characterized in that: A plurality of positioning parts are evenly distributed on the periphery of the upper glass slide; the positioning parts include three positioning posts arranged on the upper end of the bottom mold; each of the positioning posts is respectively against the outer wall of the upper glass slide.

9. The mold changing platform according to claim 8, characterized in that: A plurality of positioning holes are arranged at the upper end of the bottom mold; each positioning column is located in the corresponding positioning hole; a plurality of locking screw holes are arranged at the upper end of the bottom mold, which are respectively threadedly connected with the corresponding locking knobs; the positioning hole is located between the locking screw hole and the adsorption groove.

10. The mold changing platform according to any one of claims 1 to 4, characterized in that: A step notch is arranged at the lower end of one end of the step pressing plate close to the upper glass slide; and the outer edge of the upper glass slide is located in the step notch.

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