Transfer apparatus and method for light emitting devices
Patent Information
- Application Number
- CN202510425731.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-10-16
AI Technical Summary
[0003]但是，在Mini LED或Micro-LED的转移过程中，由于目标基板上设置的Mini LED或Micro-LED的数量较多，在拾取目标基板上的Mini LED或Micro-LED时，可能会导致误拾取，从而降低转移良率
[0028]This application provides a transfer device and method for a light-emitting device. By setting the side of the transfer head away from the base to have an arc-shaped convex surface and providing at least one pickup unit on one side of the transfer head, the pressure of the pickup unit on the light-emitting device during pickup can be reduced, thus avoiding damage to the light-emitting device. In addition, since the transfer head can rotate relative to the base, the currently used pickup unit can be replaced by rotating the transfer head. This reduces the time for replacing and manufacturing the transfer head and improves pickup efficiency.
Smart Images
Figure CN122935006A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of display device manufacturing technology, and more specifically, to a transfer device and method for a light-emitting device. Background Technology
[0002] With the development of display device manufacturing technology, Mini LED and Micro-LED have been widely used due to their superior advantages in brightness, resolution, contrast, energy consumption, lifespan, response speed and thermal stability.
[0003] However, during the transfer of Mini LEDs or Micro-LEDs, due to the large number of Mini LEDs or Micro-LEDs on the target substrate, mis-picking may occur when picking up Mini LEDs or Micro-LEDs on the target substrate, thereby reducing the transfer yield. Summary of the Invention
[0004] To overcome the aforementioned shortcomings in the prior art, the purpose of this application is to provide a transfer device for a light-emitting device, the transfer device comprising:
[0005] Base;
[0006] A transfer head is disposed on the base and is rotatable relative to the base, and the side of the transfer head away from the base includes an arc-shaped convex surface;
[0007] At least one pickup unit is located on the surface of the transfer head, and the pickup unit is used to pick up the light-emitting device.
[0008] In one possible implementation, the transfer device for the light-emitting device includes at least two pickup units, which are located on the surface of the transfer head and spaced apart.
[0009] Preferably, at least two of the picking units are equidistantly distributed;
[0010] Preferably, the transfer device for the light-emitting device includes three of the pickup units;
[0011] Preferably, the three picking units are equidistantly distributed.
[0012] In one possible implementation, the curvature of the surface ranges from 30° to 60°;
[0013] Preferably, the curvature of the surface is 45°.
[0014] In one possible implementation, the distance between the orthographic projections of adjacent pickup units on the target substrate is greater than the distance between the orthographic projections of adjacent light-emitting devices on the target substrate, wherein the light-emitting devices are located on one side of the target substrate.
[0015] In one possible implementation, the transfer device for the light-emitting device further includes a driving component for driving the transfer head to rotate relative to the base, switching the pickup unit toward the light-emitting device to be picked up.
[0016] In one possible implementation, the transfer device for the light-emitting device further includes an alignment component for detecting the positions of the pickup unit and the light-emitting device to be picked up, so as to achieve alignment between the pickup unit and the light-emitting device to be picked up.
[0017] In one possible implementation, the end of the pickup unit away from the transfer head is provided with an adhesive material;
[0018] Preferably, the adhesive force of the adhesive material to the light-emitting device is greater than the adhesive force of the target substrate on which the light-emitting device is located to the light-emitting device.
[0019] Another object of this application is to provide a method for transferring light-emitting devices, the method comprising:
[0020] The light-emitting devices on the target substrate are detected to identify the target light-emitting devices;
[0021] The base is controlled to drive the pickup unit, which is directed toward the target substrate, to pick up the target light-emitting device.
[0022] In one possible implementation, the transfer device of the light-emitting device includes at least two of the pickup units;
[0023] The method further includes:
[0024] When it is determined that the currently used pickup unit does not meet the working conditions, the transfer head is controlled to rotate, and another pickup unit is switched to face the target substrate.
[0025] In one possible implementation, the method further includes:
[0026] When the number of times the currently used pickup unit performs a pickup action reaches a set threshold, it is determined that the currently used pickup unit does not meet the working state.
[0027] Compared with the prior art, this application has the following beneficial effects:
[0028] This application provides a transfer device and method for a light-emitting device. By setting the side of the transfer head away from the base to have an arc-shaped convex surface and providing at least one pickup unit on one side of the transfer head, the pressure of the pickup unit on the light-emitting device during pickup can be reduced, thus avoiding damage to the light-emitting device. In addition, since the transfer head can rotate relative to the base, the currently used pickup unit can be replaced by rotating the transfer head. This reduces the time for replacing and manufacturing the transfer head and improves pickup efficiency. Attached Figure Description
[0029] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0030] Figure 1 This is a schematic diagram of the structure of a transfer device for a light-emitting device in the prior art;
[0031] Figure 2 This is one of the structural schematic diagrams of the transfer device for the light-emitting device provided in the embodiments of this application;
[0032] Figure 3 A second schematic diagram of the structure of the transfer device for the light-emitting device provided in the embodiments of this application;
[0033] Figure 4 This is the third schematic diagram of the structure of the transfer device for the light-emitting device provided in the embodiments of this application;
[0034] Figure 5 A schematic diagram of the pickup process of the transfer device for the light-emitting device provided in the embodiments of this application;
[0035] Figure 6 Fourth schematic diagram of the structure of the transfer device for the light-emitting device provided in the embodiments of this application;
[0036] Figure 7 Fifth schematic diagram of the structure of the transfer device for the light-emitting device provided in the embodiments of this application;
[0037] Figure 8 This is a schematic flowchart of the transfer method for the light-emitting device provided in the embodiments of this application.
[0038] Icons: 100-Transfer head; 200-Pick-up unit; 300-Light-emitting device; 400-Target substrate; 500-Adhesive material. Detailed Implementation
[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0040] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0042] In the description of this application, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0043] It should be noted that, where there is no conflict, different features in the embodiments of this application can be combined with each other.
[0044] The inventor discovered through research that... (Please refer to...) Figure 1 When picking up a single light-emitting device 300' (such as a MiniLED or Micro-LED) on the target substrate 400', the picking unit 200' may come into contact with an adjacent light-emitting device 300' due to the small spacing between them, resulting in mis-picking. Furthermore, since the commonly used transfer head 100' only has one picking unit 200', it is usually necessary to frequently replace the transfer head 100' when picking up the light-emitting device 300', leading to low picking efficiency.
[0045] In view of this, this embodiment provides a solution that can solve the above problems. The solution provided in this embodiment will be described in detail below.
[0046] Please refer to Figure 2 , Figure 2 This is a possible structural schematic diagram of the light-emitting device transfer device provided in this embodiment. The light-emitting device transfer device may include a base, a transfer head 100 and at least one pickup unit 200.
[0047] The transfer head 100 is disposed on the base and can rotate relative to the base. The side of the transfer head 100 away from the base may include an arc-shaped convex surface.
[0048] In this embodiment, the transfer head 100 and the base can be connected by vacuum, and the surface of the transfer head 100 away from the base can be curved. Since the transfer head 100 can rotate relative to the base, the position of each pickup unit 200 relative to the light-emitting device 300 can be adjusted by rotating the transfer head 100.
[0049] Compared to existing technologies, this embodiment, by setting the side of the transfer head 100 away from the base to be an arc-shaped convex surface, can buffer the pressure brought by the pickup unit 200 during the pickup of the light-emitting device 300, reduce the distance that the pickup unit 200 moves towards the light-emitting device 300, and thus avoid the pickup unit 200 picking up other light-emitting devices 300 adjacent to the light-emitting device 300 while picking up the light-emitting device 300.
[0050] At least one pickup unit 200 may be located on the surface of a transfer head 100, and the pickup unit 200 may be used to pick up the light-emitting device 300.
[0051] In this embodiment, the pickup unit 200 may include a connecting part and a transfer post. The connecting part of the pickup unit 200 may be connected to the surface of the transfer head 100 away from the base. The end of the pickup post near the transfer head 100 is connected to the connecting part. The end of the pickup post away from the transfer head 100 may pick up the light-emitting device 300 when it comes into contact with the light-emitting device 300.
[0052] In one possible implementation, during the process of transferring the light-emitting device 300 to the driving backplane using mass transfer technology, bonding failure may occur. Therefore, when there are light-emitting devices 300 with bonding failure on the driving backplane, the picking unit 200 can pick up a corresponding light-emitting device 300 from a temporary substrate on which multiple closely packed light-emitting devices 300 are disposed, and transfer the picked-up light-emitting device 300 to the driving backplane.
[0053] In another possible implementation, when a damaged light-emitting device 300 is present on the temporary substrate, the picking unit 200 can pick up the light-emitting device 300 from the temporary substrate on which multiple closely arranged light-emitting devices 300 are disposed, and remove the picked-up damaged light-emitting device 300. Compared with the prior art of removing damaged light-emitting devices 300 by laser, this embodiment can avoid damage to the temporary substrate and avoid the residue of light-emitting devices 300, thereby improving the repair yield of the temporary substrate.
[0054] Specifically, after the pickup unit 200 picks up the damaged light-emitting device 300, it can control the pickup unit 200 to transfer the damaged light-emitting device 300 to an adhesive material with strong adhesion, wherein the adhesive material's adhesion to the light-emitting device 300 can be greater than the pickup unit 200's adhesion to the light-emitting device 300.
[0055] Based on the above design, in the light-emitting device transfer device provided in this embodiment, by setting the side of the transfer head 100 away from the base to have an arc-shaped convex surface, and by providing at least one pickup unit 200 on one side of the transfer head 100, the pressure of the pickup unit 200 on the light-emitting device 300 during pickup can be reduced, thus avoiding damage to the light-emitting device 300. Furthermore, since the transfer head 100 can rotate relative to the base, the currently used pickup unit 200 can be replaced by rotating the transfer head 100. This reduces the time required for replacing and manufacturing the transfer head 100, thereby improving pickup efficiency.
[0056] In one possible implementation, please refer to Figure 3 The transfer device for the light-emitting device may include at least two pickup units 200, which may be located on the surface of the transfer head 100 and are spaced apart, with the spacing between the pickup units 200 being equal.
[0057] In this embodiment, the number of pickup units 200 located on the surface of the transfer head 100 away from the base can be at least two, and the at least two pickup units 200 are identical. By rotating the transfer head 100, one pickup unit 200 on the transfer head 100 can be controlled to face the light-emitting device 300 to be picked up, which facilitates pickup.
[0058] It is understandable that the number of picking units 200 can be adjusted according to actual needs. For example, the number of picking units 200 can be 2, 3, 4, etc., and no specific limit is made here.
[0059] In the above design, by setting at least two pickup units on one side of the transfer head, each pickup unit can be located on a different plane, avoiding multiple pickup units from picking up simultaneously during the pickup process, thus preventing the accidental pickup of light-emitting devices in other positions, thereby improving the accuracy and efficiency of pickup.
[0060] In one possible implementation, the curvature of the surface of the transfer head 100 on the side away from the base ranges from 30° to 60°, and the curvature of the surface is preferably 45°.
[0061] In this embodiment, the curvature refers to the angle of the arc formed by the surface of the transfer head 100 away from the base. When the pickup unit 200 picks up the light-emitting device 300, the pickup column can be controlled to move in a direction close to the light-emitting device 300, thereby contacting the light-emitting device 300. By setting the curvature range of the surface of the transfer head 100 away from the base to 30° to 60°, the downward pressure depth of the pickup unit 200 can be reduced, thereby avoiding contact between the pickup unit 200 and multiple light-emitting devices 300.
[0062] In one possible implementation, please refer to Figure 4 The distance L1 between the orthographic projections of adjacent pickup units 200 on the target substrate 400 can be greater than the distance L2 between the orthographic projections of adjacent light-emitting devices 300 on the target substrate 400.
[0063] In this embodiment, the light-emitting device 300 may be located on the target substrate 400, and a plurality of closely arranged light-emitting devices 300 may be disposed on the target substrate 400. The plurality of light-emitting devices 300 may include a first color light-emitting device, a second color light-emitting device, and a third color light-emitting device. The first color light-emitting device, the second color light-emitting device, and the third color light-emitting device may be different from each other. For example, the light emission colors of the first color light-emitting device, the second color light-emitting device, and the third color light-emitting device may be one of red, green, and blue, respectively.
[0064] Since the distance L2 between the orthographic projections of adjacent light-emitting devices 300 on the target substrate 400 is very small, and when the light-emitting device 300 is picked up by the pickup unit 200, only one of the multiple light-emitting devices 300 needs to be picked up, the distance L1 between the orthographic projections of adjacent pickup units 200 on the target substrate 400 on the transfer head 100 can be set to be greater than the distance L2 between the orthographic projections of adjacent light-emitting devices 300 on the target substrate 400. In this way, the distance L1 between the orthographic projections of multiple pickup units 200 on the target substrate 400 is relatively far, and the pickup units 200 will not affect each other when picking up any light-emitting device 300 to be picked up on the target substrate 400, thereby avoiding adjacent pickup units 200 from mistakenly picking up light-emitting devices 300 in other positions.
[0065] In one possible implementation, the transfer device for the light-emitting device may further include a driving component, which can be used to drive the transfer head 100 to rotate relative to the base and switch the pickup unit 200 toward the light-emitting device 300 to be picked up.
[0066] In this embodiment, please refer to Figure 5 When one of the pickup units 200 located on one side of the transfer head 100 fails to function properly (e.g., the pickup column of the pickup unit 200 is broken, or the adhesiveness of the pickup unit 200 is insufficient), the transfer head 100 can be driven to rotate relative to the base by the drive assembly, so that the other pickup units 200 are directed toward the light-emitting device 300 to be picked up, and the light-emitting device 300 is picked up by the other pickup units 200 after the position is adjusted.
[0067] In the above structure, by rotating the transfer head 100 and using other pickup units 200 to pick up the light-emitting device 300, the time for replacing and manufacturing the transfer head 100 can be reduced, thereby improving the pickup efficiency.
[0068] In addition, when the pickup unit 200 is not working properly (for example, the pickup column of the pickup unit 200 is broken, or the adhesiveness of the pickup unit 200 is insufficient), the pickup unit 200 can be replaced.
[0069] In one possible implementation, the transfer device for the light-emitting device may further include an alignment component, which can be used to detect the position of the pickup unit 200 and the light-emitting device 300 to be picked up, so as to achieve alignment between the pickup unit 200 and the light-emitting device 300 to be picked up.
[0070] In this embodiment, the alignment component may include a first detection unit and a second detection unit. During the process of picking up the light-emitting device 300 through a pickup unit 200 on the transfer head 100, the first detection unit can be used to detect the position of the pickup unit 200, and the second detection unit can be used to detect the position of the light-emitting device 300 to be picked up. This controls the pickup unit 200 to move above the light-emitting device 300 to be picked up, achieving alignment between the pickup unit 200 and the light-emitting device 300 to be picked up. This prevents the pickup unit 200 from shifting during the pickup process and ensures that the pickup unit 200 can accurately pick up the light-emitting device 300. Both the first detection unit and the second detection unit can be lenses.
[0071] Specifically, based on the positions of the pickup unit 200 and the light-emitting device 300 to be picked up detected by the first detection unit and the second detection unit respectively, the pickup unit 200 can be controlled to move in a direction parallel to the target substrate 400, so that the pickup unit 200 is located directly above the light-emitting device 300 to be picked up.
[0072] In addition, the first detection unit and the second detection unit can also be used to detect whether the pickup unit 200 has successfully picked up the light-emitting device 300. If the pickup unit 200 fails to pick up the light-emitting device 300, the position of the pickup unit 200 can be adjusted, or another pickup unit 200 can be replaced to pick up the device.
[0073] In one possible implementation, the end of the picking unit 200 away from the transfer head 100 is provided with an adhesive material 500.
[0074] In this embodiment, the end of the pickup unit 200 away from the transfer head 100 is adhesive. Specifically, please refer to... Figure 6 An adhesive material 500 can be provided at one end of the pickup unit 200 away from the transfer head 100. The pickup unit 200 can pick up the light-emitting device 300 on the target substrate 400 by the adhesive force of the adhesive material 500.
[0075] For example, the adhesive material 500 disposed at the end of the pickup unit 200 away from the transfer head 100 may be silicone.
[0076] In another possible implementation, the material of the pickup unit 200 can be an adhesive material 500. In this way, it is not necessary to provide an additional adhesive material 500 at the end of the pickup unit 200 away from the transfer head 100, and the light-emitting device 300 on the target substrate 400 can be picked up directly by the pickup unit 200.
[0077] For example, the material of the pickup unit 200 may be silicone.
[0078] In addition, the adhesion force of the pickup unit 200 to the light-emitting device 300 can be greater than the adhesion force of the target substrate 400 on the light-emitting device 300. This ensures that the pickup unit 200 can reliably pick up the light-emitting device 300, ensuring that the light-emitting device 300 will not fall off during the pickup process and improving the success rate of pickup.
[0079] In one possible implementation, please refer to Figure 7 The transfer device for the light-emitting device may include three pickup units 200, and the three pickup units 200 may be distributed at equal intervals.
[0080] In this embodiment, the spacing between adjacent pickup units 200 can be equal. Specifically, one pickup unit 200 can be located at the center of the surface of the transfer head 100 away from the base, and the other two pickup units 200 can be symmetrically distributed relative to the pickup unit 200 located at the center. When any pickup unit 200 on the transfer head 100 cannot be used normally, the transfer head 100 can be rotated to switch to other pickup units 200 for picking up the light-emitting device 300.
[0081] In some examples, during the pickup process of the light-emitting device 300, the pickup unit 200 located at the center of the transfer head 100 can be used first. If the pickup unit 200 cannot be used normally (for example, the pickup column of the pickup unit 200 is broken, or the adhesiveness of the pickup unit 200 is insufficient), another pickup unit 200 located next to the first pickup unit 200 can be used. If the pickup unit 200 also cannot be used normally, a pickup unit 200 symmetrically distributed with it can be used. In addition, when using other pickup units 200 for pickup, the pickup unit 200 that cannot be used normally can be replaced.
[0082] This embodiment also provides a method for transferring a light-emitting device, which can use the light-emitting device transfer apparatus provided in this embodiment. Please refer to... Figure 8 The method for transferring light-emitting devices may include the following steps.
[0083] Step S110: Detect the light-emitting device 300 on the target substrate 400 to identify the target light-emitting device.
[0084] In this embodiment, the target substrate 400 is provided with a plurality of closely arranged light-emitting devices 300, and the target light-emitting device is the light-emitting device 300 to be picked up. For example, when it is necessary to remove a damaged light-emitting device 300 on a temporary substrate, the target substrate 400 can refer to the temporary substrate, and the target light-emitting device can refer to the damaged light-emitting device 300. The size of the light-emitting device 300 provided on the target substrate 400 can be 20 to 30 micrometers.
[0085] Specifically, multiple light-emitting devices 300 on the target substrate 400 can be detected by Automated Optical Inspection (AOI) to obtain the position information of the target light-emitting devices.
[0086] Step S120: Control the base to drive the pickup unit 200 toward the target substrate 400 to pick up the target light-emitting device.
[0087] In this embodiment, the base can be controlled to move the pickup unit 200 above the target light-emitting device, and then the base can be controlled to move the transfer head 100 closer to the target light-emitting device, so that the pickup unit 200 facing the target substrate 400 contacts the target light-emitting device and picks up the target light-emitting device.
[0088] In one possible implementation, the transfer device for the light-emitting device may include at least two pickup units 200. When it is determined that the currently used pickup unit 200 does not meet the working conditions, the transfer head 100 may be controlled to rotate, and another pickup unit 200 may be switched to face the target substrate 400.
[0089] In this embodiment, if the currently used pickup unit 200 does not meet the working conditions (for example, the pickup column of the pickup unit 200 is broken, or the adhesiveness of the pickup unit 200 is insufficient), the transfer head 100 can be controlled to rotate relative to the base, so that another pickup unit 200 is directed toward the target substrate 400, and the light-emitting device 300 can continue to be picked up through the pickup unit 200. In this way, the time for replacing and manufacturing the transfer head 100 can be reduced, thereby improving the pickup efficiency.
[0090] In one possible implementation, it can also be determined that the currently used pickup unit 200 does not meet the working state when the number of pickup actions performed by the currently used pickup unit 200 reaches a set threshold (set according to actual needs).
[0091] In this embodiment, the number of times the currently used pickup unit 200 performs a pickup action can be detected. When the number of times the currently used pickup unit 200 performs a pickup action is greater than or equal to a set threshold, it can be considered that the stickiness of the pickup unit 200 has decreased. At this time, another pickup unit 200 on the transfer head 100 can be used to pick up the light-emitting device 300.
[0092] In summary, the embodiments of this application provide a transfer device and method for a light-emitting device. By setting the side of the transfer head away from the base to have an arc-shaped convex surface and providing at least one pickup unit on one side of the transfer head, the pressure of the pickup unit on the light-emitting device during pickup can be reduced, thus avoiding damage to the light-emitting device. In addition, since the transfer head can rotate relative to the base, the currently used pickup unit can be replaced by rotating the transfer head. This reduces the time spent on replacing and manufacturing the transfer head and improves pickup efficiency.
[0093] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0094] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.
Claims
1. A transfer device for a light-emitting device, characterized in that, include: Base; A transfer head is disposed on the base and is rotatable relative to the base, and the side of the transfer head away from the base includes an arc-shaped convex surface; At least one pickup unit is located on the surface of the transfer head, and the pickup unit is used to pick up the light-emitting device.
2. The transfer device for the light-emitting device according to claim 1, characterized in that, The transfer device for the light-emitting device includes at least two pickup units, which are located on the surface of the transfer head and spaced apart. Preferably, at least two of the picking units are equidistantly distributed; Preferably, the transfer device for the light-emitting device includes three of the pickup units; Preferably, the three picking units are equidistantly distributed.
3. The transfer device for the light-emitting device according to claim 1, characterized in that, The curvature of the surface ranges from 30° to 60°; Preferably, the curvature of the surface is 45°.
4. The transfer device for the light-emitting device according to claim 2, characterized in that, The distance between the orthographic projections of adjacent pickup units on the target substrate is greater than the distance between the orthographic projections of adjacent light-emitting devices on the target substrate, wherein the light-emitting devices are located on one side of the target substrate.
5. The transfer device for the light-emitting device according to claim 2, characterized in that, The transfer device for the light-emitting device further includes a driving component, which drives the transfer head to rotate relative to the base and switches the pickup unit toward the light-emitting device to be picked up.
6. The transfer device for the light-emitting device according to claim 1, characterized in that, The transfer device for the light-emitting device further includes an alignment component, which is used to detect the positions of the pickup unit and the light-emitting device to be picked up, so as to achieve alignment between the pickup unit and the light-emitting device to be picked up.
7. The transfer device for the light-emitting device according to claim 1, characterized in that, An adhesive material is provided at the end of the pickup unit away from the transfer head; Preferably, the adhesive force of the adhesive material to the light-emitting device is greater than the adhesive force of the target substrate on which the light-emitting device is located to the light-emitting device.
8. A method for transferring light-emitting devices, characterized in that, The method using the transfer apparatus of the light-emitting device according to any one of claims 1-7 comprises: The light-emitting devices on the target substrate are detected to identify the target light-emitting devices; The base is controlled to drive the pickup unit, which is directed toward the target substrate, to pick up the target light-emitting device.
9. The method for transferring light-emitting devices according to claim 8, characterized in that, The transfer device for the light-emitting device includes at least two of the pickup units; The method further includes: When it is determined that the currently used pickup unit does not meet the working conditions, the transfer head is controlled to rotate, and another pickup unit is switched to face the target substrate.
10. The method for transferring light-emitting devices according to claim 8, characterized in that, The method further includes: When the number of times the currently used pickup unit performs a pickup action reaches a set threshold, it is determined that the currently used pickup unit does not meet the working state.