Waterproof structure of Micro LED module

Abstract

The utility model discloses a waterproof structure of a Micro LED module, which relates to the technical field of Micro LEDs and comprises a back plate provided with an accommodating cavity, a circuit board arranged in the accommodating cavity and a plurality of substrates arranged on the back plate and electrically connected with the circuit board, the substrates are provided with a plurality of chips, and the chips are electrically connected with the circuit board. The upper end of the back plate is provided with a light-transmitting cover used for covering the substrate and the chip. The clamping block is arranged at the bottom of the light-transmitting cover, the clamping block at the bottom of the light-transmitting cover is aligned with and inserted into the clamping groove in the upper surface of the back plate, positioning can be completed, the concave groove is formed in the surface of the clamping block, waterproof glue is injected into the clamping groove from a pouring channel in the back plate through an injector, and the concave groove can be sealed by the waterproof glue; after the waterproof glue is solidified, a strip-shaped structure is formed in the pouring channel and the concave groove, the clamping block can be effectively locked, the light-transmitting cover is prevented from falling off, the module does not need to be covered with a waterproof layer, and the light emitting effect is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of Micro LED, in particular to a waterproof structure for a Micro LED module. Background Technique

[0002] A Micro LED module is an aggregate in which multiple Micro LED chips are connected together through series-parallel relationships and centrally packaged on a plane. The waterproof performance is an important criterion for evaluating the performance of a module. The existing waterproof structures for Micro LED modules all place the module in a housing and apply waterproof glue at the joints of the housing for waterproofing. In the process of using this kind of waterproof module, the waterproof glue is likely to fall off, resulting in the loss of waterproof performance. There are also some waterproof structures that directly cover a waterproof layer on the backplane of the module, but the waterproof layer will affect the light-emitting effect of the module. Therefore, there is a lack of a waterproof solution in the prior art that can balance the light-emitting effect and avoid the falling off of the waterproof glue. Content of the Utility Model

[0003] The purpose of the utility model is to provide a waterproof structure for a Micro LED module, so as to solve the technical problem that the existing waterproof structures for Micro LED modules in the current market cannot balance the light-emitting effect and avoid the falling off of the waterproof glue proposed in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A waterproof structure for a Micro LED module, including a backplane provided with an accommodation chamber, a circuit board arranged in the accommodation chamber, and a plurality of substrates arranged on the backplane and electrically connected to the circuit board. The substrates are provided with a plurality of chips. A light-transmitting cover for covering the substrates and the chips is arranged at the upper end of the backplane. The waterproof structure further includes:

[0005] A clamping block provided with a concave groove, the clamping block is fixedly arranged at the bottom of the light-transmitting cover, and the clamping block cooperates with a clamping groove opened on the backplane;

[0006] A pouring channel opened on the inner wall of the backplane, one end of the pouring channel is exposed outside the backplane to form a pouring port, and the other end of the pouring channel extends into the clamping groove to form a discharge port. The waterproof glue is injected into the pouring channel through the pouring port and enters the clamping groove through the discharge port to seal the concave groove.

[0007] As a preferred technical solution of the utility model, a wire for connecting the two is arranged between the circuit board and the substrate, and the wire penetrates through a wire groove opened on the backplane and extends into the accommodation chamber.

[0008] As a preferred technical solution of the utility model, the inner wall of the clamping groove is provided with a fitting block, and the fitting block cooperates with a fitting groove opened on the surface of the clamping block.

[0009] As a preferred technical solution of the present utility model, a hem is formed by extending upward at the edge of the light-transmitting cover, and the waterproof glue covers the hem at the upper end of the back plate and the injection port area.

[0010] As a preferred technical solution of the present utility model, positioning blocks are provided at the upper end of the back plate, and the positioning blocks cooperate with the positioning grooves opened on the chip base.

[0011] As a preferred technical solution of the present utility model, at least two positioning grooves are opened on each chip base, and correspondingly, the number of the positioning blocks is the same as the number of the positioning grooves.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] In the present utility model, by providing a clamping block at the bottom of the light-transmitting cover and inserting the clamping block at the bottom of the light-transmitting cover into the clamping groove on the upper surface of the back plate, positioning can be completed. Since a recessed groove is opened on the surface of the clamping block, waterproof glue is injected into the clamping groove from the pouring channel inside the back plate through a syringe, and the waterproof glue can seal the recessed groove. After the waterproof glue solidifies, a strip-shaped structure is formed in the pouring channel and the recessed groove, which can effectively lock the clamping block and prevent the light-transmitting cover from falling off. There is no need to cover a waterproof layer on the module, which does not affect the light-emitting effect. Description of the Drawings

[0014] Figure 1 is an external overall three-dimensional structure schematic diagram of the present utility model;

[0015] Figure 2 is a partial cross-sectional three-dimensional structure schematic diagram of the back plate and the light-transmitting cover of the present utility model;

[0016] Figure 3 is a main cross-sectional structure schematic diagram of the back plate and the light-transmitting cover of the present utility model;

[0017] Figure 4 is of the present utility model Figure 3 magnified structure schematic diagram at A in.

[0018] In the figure: 1. Back plate; 2. Accommodation chamber; 3. Circuit board; 4. Chip; 401. Substrate; 5. Conducting wire; 6. Wire groove; 7. Light-transmitting cover; 8. Clamping block; 9. Clamping groove; 10. Recessed groove; 11. Pouring channel; 12. Fitting groove; 13. Fitting block; 14. Hem; 15. Waterproof glue; 16. Positioning block; 17. Positioning groove. Detailed Embodiments

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0020] Please refer to Figures 1-4 Figures 1-4 This utility model provides a technical solution: a waterproof structure for a Micro LED module, including a backplane 1 provided with a receiving chamber 2, a circuit board 3 disposed in the receiving chamber 2, and a plurality of substrates 401 disposed on the backplane 1 and electrically connected to the circuit board 3. The substrate 401 is provided with a plurality of chips 4. A light-transmitting cover 7 for covering the substrate 401 and the chips 4 is disposed at the upper end of the backplane 1. Specifically, a wire 5 for connecting the two is disposed between the circuit board 3 and the substrate 401. The wire 5 passes through a wire groove 6 opened in the backplane 1 and extends into the receiving chamber 2. A light-transmitting cover 7 for covering the chips 4 is disposed at the upper end of the backplane 1. The light-transmitting cover 7 is bonded to the backplane 1 by a waterproof adhesive 15;

[0021] Adopting the above technical solution enables the chip 4 to have a basic light-emitting function. After the circuit board 3 is powered on, electric power is transmitted to the chip 4 on the surface of the substrate 401 above the backplane 1 through the wire 5. The chip 4 emits light and works, and the light beam passes through the light-transmitting cover 7 and scatters outward. The light-transmitting cover 7 can play a role in protecting the chip 4.

[0022] As Figure 2 shown, the waterproof structure further includes: a clamping block 8 provided with a recessed groove 10. The clamping block 8 is fixedly disposed at the bottom of the light-transmitting cover 7. The clamping block 8 cooperates with a card slot 9 opened in the backplane 1; in this embodiment, four clamping blocks 8 are disposed at the bottom of each light-transmitting cover 7. Correspondingly, the number of card slots 9 is the same as the number of clamping blocks 8.

[0023] Adopting the above technical solution can conveniently position the light-transmitting cover 7 at the upper end of the backplane 1. Align the clamping block 8 at the bottom of the light-transmitting cover 7 with the card slot 9 on the upper surface of the backplane 1 and insert it, so that the bottom of the light-transmitting cover 7 is fully attached to the backplane 1 to complete the positioning.

[0024] As Figure 3 and Figure 4 shown, the waterproof structure further includes: a pouring channel 11 opened on the inner wall of the backplane 1. One end of the pouring channel 11 is exposed outside the backplane 1 to form an injection port, and the other end of the pouring channel 11 extends into the card slot 9 to form a discharge port. The waterproof adhesive 15 is injected into the pouring channel 11 through the injection port and enters the card slot 9 through the discharge port to seal the recessed groove 10;

[0025] Adopting the above technical solution can stably set the light-transmitting cover 7 on the backplane 1 to prevent it from falling off. Inject the waterproof adhesive 15 from the injection port outside the backplane 1 through a syringe. The waterproof adhesive 15 is injected into the pouring channel 11 through the injection port and enters the card slot 9 to seal the recessed groove 10. After the waterproof adhesive 15 solidifies, a strip structure is formed in the pouring channel 11 and the recessed groove 10, which can effectively lock the clamping block 8 and prevent the clamping block 8 from falling out of the card slot 9.

[0026] Further, as shown in Figure 4 , a fitting block 13 is provided on the inner wall of the card slot 9, and the fitting block 13 cooperates with the fitting groove 12 formed on the surface of the card block 8;

[0027] Adopting the above technical solution can further improve the connection stability between the card block 8 and the card slot 9. When the card block 8 is inserted into the card slot 9, it will squeeze the fitting block 13. When the card block 8 is inserted to the maximum depth, the fitting groove 12 just aligns with the fitting block 13, so that the fitting block 13 is inserted into the fitting groove 12, and together with the strip structure, it forms a double fixation for the light-transmitting cover 7, further preventing the light-transmitting cover 7 from falling off.

[0028] Further, as shown in Figure 3 and Figure 4 , a hem 14 is formed by the upward extension of the edge of the light-transmitting cover 7, and the waterproof glue 15 covers the hem 14 at the upper end of the back plate 1 and the injection port area;

[0029] Adopting the above technical solution can effectively increase the contact area between the light-transmitting cover 7 and the waterproof glue 15, so as to fix the outer edge of the light-transmitting cover 7 through the waterproof glue 15, and further prevent the light-transmitting cover 7 from falling off.

[0030] Further, as shown in Figure 3 , a positioning block 16 is provided at the upper end of the back plate 1, and the positioning block 16 cooperates with the positioning groove 17 formed on the base of the chip 4; in this embodiment, at least two positioning grooves 17 are formed in each chip 4 base, preferably two, and correspondingly, the number of positioning blocks 16 is the same as the number of positioning grooves 17;

[0031] Adopting the above technical solution can facilitate the bonding of the chip 4 to the back plate 1 with an adhesive. During use, the base of the chip 4 is coated with the adhesive, and the positioning groove 17 of the base of the chip 4 is aligned with the positioning block 16 at the upper end of the back plate 1 and inserted.

[0032] Working principle: In this application, a clamping block 8 is provided at the bottom of the light-transmitting cover 7. The clamping block 8 at the bottom of the light-transmitting cover 7 is aligned with the clamping groove 9 on the upper surface of the backplane 1 and inserted. When the clamping block 8 is inserted into the clamping groove 9, it will squeeze the fitting block 13. When the clamping block 8 is inserted to the maximum depth, the fitting groove 12 is just aligned with the fitting block 13, so that the fitting block 13 is inserted into the fitting groove 12, and the strip structure is used to form a double fixation on the light-transmitting cover 7, further preventing the light-transmitting cover 7 from falling off, and thus the positioning can be completed. Since a recessed groove 10 is provided on the surface of the clamping block 8, waterproof glue 15 is injected into the clamping groove 9 from the pouring channel 11 inside the backplane 1 through a syringe. The waterproof glue 15 can seal the recessed groove 10. After the waterproof glue 15 solidifies, a strip structure is formed in the pouring channel 11 and the recessed groove 10, which can effectively lock the clamping block 8 and prevent the clamping block 8 from falling out of the clamping groove 9. A flanging 14 is formed by the upward extension of the edge of the light-transmitting cover 7. The waterproof glue 15 covers the flanging 14 at the upper end of the backplane 1 and the injection port area, which can effectively increase the contact area between the light-transmitting cover 7 and the waterproof glue 15, so as to fix the outer edge of the light-transmitting cover 7 through the waterproof glue 15, and further prevent the light-transmitting cover 7 from falling off.

[0033] Thus, a series of operations are completed. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0034] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A waterproof structure of a Micro LED module, comprising a back plate (1) having an accommodation chamber (2), a circuit board (3) arranged in the accommodation chamber (2), and a plurality of substrates (401) arranged on the back plate (1) and electrically connected to the circuit board (3), wherein the substrates (401) are provided with a plurality of chips (4), and a light-transmitting cover (7) for covering the substrates (401) and the chips (4) is provided at the upper end of the back plate (1), characterized in that: The waterproof structure also includes: A card block (8) having a recessed groove (10), the card block (8) being fixedly arranged at the bottom of the light-transmitting cover (7), and the card block (8) cooperating with a card groove (9) provided on the back plate (1); A pouring channel (11) is provided on the inner wall of the back plate (1), one end of the pouring channel (11) is exposed outside the back plate (1) to form an injection port, and the other end of the pouring channel (11) extends into the card slot (9) to form a discharge port. The waterproof glue (15) is injected into the pouring channel (11) through the injection port and enters the card slot (9) through the discharge port to seal the recessed groove (10).

2. The waterproof structure of the Micro LED module according to claim 1, characterized in that: A wire (5) for connecting the circuit board (3) and the base plate (401) is provided between the two, and the wire (5) passes through a wire threading groove (6) provided on the back plate (1) and extends to the accommodating chamber (2).

3. The waterproof structure of the Micro LED module according to claim 1, characterized in that: The inner wall of the clamping slot (9) is provided with an engaging block (13), and the engaging block (13) cooperates with an engaging slot (12) provided on the surface of the clamping block (8).

4. The waterproof structure of the Micro LED module according to claim 1, characterized in that: The edge of the light-transmitting cover (7) extends upward to form a folded edge (14), and the waterproof glue (15) covers the folded edge (14) and the injection port area at the upper end of the back plate (1).

5. The waterproof structure of the Micro LED module according to claim 1, characterized in that: A positioning block (16) is provided at the upper end of the back plate (1), and the positioning block (16) cooperates with a positioning groove (17) provided on the base of the chip (4).

6. The waterproof structure of the Micro LED module according to claim 5, characterized in that: Each chip (4) base is provided with at least two positioning grooves (17), and correspondingly, the number of the positioning blocks (16) is consistent with the number of the positioning grooves (17).

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