Display module bottom shell structure and display module

Abstract

The utility model discloses a display module bottom shell structure relates to display module technical field, including bottom plate and a plurality of first injection molding piece, be provided with a plurality of connecting groove on the bottom plate, a plurality of first injection molding piece form through injection molding at each connecting groove, and can be respectively embedded in a plurality of connecting groove, and all be provided with the hollow rubber column of protruding from the connecting groove on each first injection molding piece, and the hollow rubber column is used for fixing the circuit board and / or face shield, the display module bottom shell structure provided by the utility model reduces secondary assembly error, promotes production efficiency, the utility model further provides a display module including the display module bottom shell structure.

Description

Technical Field

[0001] This utility model relates to the field of display module technology, and in particular to a display module bottom shell structure and a display module. Background Technology

[0002] LED display modules commonly used in the industry typically consist of three parts: a base shell, a display lamp panel, and a light-shielding cover. To ensure the overall structural strength of the display module, existing technologies often employ die-cast aluminum to manufacture the base shell. This die-cast aluminum base shell, in order to install and secure the light-shielding cover and display lamp panel, usually requires an internally designed and machined frame structure with hollow studs. However, this traditional die-cast aluminum base shell has the following significant drawbacks: 1. Secondary assembly errors: The base shell body and the internal stud frame are often two separate parts, requiring secondary assembly. This assembly process introduces unavoidable precision errors, affecting the positioning accuracy of the display lamp panel and the light-shielding cover, potentially leading to display quality issues such as pixel misalignment and bright / dark lines. 2. Complex process and high cost: Die-casting the base shell first, then manufacturing and assembling the internal frame, results in a cumbersome process, a long production cycle, and relatively high manufacturing costs. Therefore, there is an urgent need for a new display module base shell structure that can balance high strength, high precision, and a simple process suitable for mass production. Utility Model Content

[0003] The purpose of this utility model is to provide a display module bottom shell structure and a display module to solve the problems existing in the prior art, reduce secondary assembly errors, and improve production efficiency.

[0004] To achieve the above objectives, this utility model provides the following solution: This utility model provides a display module bottom shell structure, including a bottom plate and a plurality of first injection molded parts; the bottom plate is provided with a plurality of connecting grooves; the plurality of first injection molded parts are formed by injection molding at each of the connecting grooves and can be respectively embedded in the plurality of connecting grooves, and each of the first injection molded parts is provided with a hollow glue post protruding from the connecting groove, the hollow glue post being used to fix the circuit board and / or the face mask.

[0005] Preferably, the cross-sectional dimensions at the opening of each connecting groove are smaller than the maximum cross-sectional dimensions inside the connecting groove.

[0006] Preferably, the base plate is further provided with a plurality of reinforcing ribs, which protrude from the back of the base plate.

[0007] Preferably, each of the connecting grooves is located on the upper bottom side of the reinforcing rib.

[0008] Preferably, the cross-sectional dimensions of the reinforcing rib gradually decrease from top to bottom.

[0009] Preferably, the base plate is further provided with a plurality of functional blind holes, and each of the functional blind holes is formed with a hollow second injection molded part by injection molding, the second injection molded part being used to fix electronic devices.

[0010] Preferably, the base plate is further provided with a folded edge facing the back side, and a plurality of circumferentially distributed through holes are provided on the base plate near the folded edge. The folded edge is covered by a third injection molded part formed by injection molding, and the third injection molded part can fill the through holes. The upper side of the third injection molded part is provided with a connecting part for connecting the circuit board and / or the face mask.

[0011] Preferably, the base plate is a metal plate and is formed by stamping; and the connecting groove is formed by milling the side of the base plate.

[0012] Preferably, a fixing part is further provided on the back side of the base plate, and a hollow fourth injection molded part is formed outside the fixing part by injection molding. The fourth injection molded part is used to connect to the external fixing part.

[0013] This utility model also provides a display module, including a circuit board, a face mask, and a display module bottom shell structure as described above.

[0014] The present invention achieves the following technical advantages over the prior art: The display module bottom shell structure and display module provided by this utility model have a bottom shell structure that is embedded and connected to the circuit board and / or the mask through a hollow glue column via a first injection molded part on the bottom plate. In addition, the first injection molded part is formed by injection molding into the connecting groove of the bottom plate, which eliminates the cumulative error caused by secondary assembly in traditional processes, ensures the positioning accuracy of the circuit board and the mask, and improves the display quality. Moreover, the first injection molded part is embedded in the connecting groove and connected to the bottom plate, which improves the bonding force and avoids the risk of delamination. Thus, the display module bottom shell structure provided by this utility model simplifies the injection molding process to the complex die casting and assembly process required by traditional stud frames, making the process simple, easy to mass-produce, and with high production efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a top view of the display module bottom shell structure provided in Embodiment 1 of this utility model; Figure 2 This is a front view schematic diagram of the display module bottom shell structure provided in Embodiment 1 of this utility model; Figure 3 A cross-sectional schematic diagram of the connecting groove provided in Embodiment 1 of this utility model; Figure 4 This is a schematic diagram showing the fit between the base plate and the first and third injection molded parts provided in Embodiment 1 of this utility model.

[0017] In the diagram: 1-base plate; 11-connecting groove; 12-reinforcing rib; 13-folded edge; 14-through hole; 2-first injection molded part; 21-hollow plastic column; 3-third injection molded part; 31-connecting part; 4-fourth injection molded part. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] The purpose of this utility model is to provide a display module bottom shell structure and a display module to solve the problems existing in the prior art, reduce secondary assembly errors, and improve production efficiency.

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Example 1 This embodiment provides a display module bottom shell structure; please refer to [link / reference]. Figures 1-4 The system includes a base plate 1 and multiple first injection molded parts 2; the base plate 1 is provided with multiple connecting grooves 11; the multiple first injection molded parts 2 are formed by injection molding at each connecting groove 11 and can be respectively embedded in the multiple connecting grooves 11, and each first injection molded part 2 is provided with a hollow glue post 21 protruding from the connecting groove 11, the hollow glue post 21 is used to fix the circuit board and / or the face mask.

[0022] In this design, the bottom shell structure is embedded and connected to the circuit board and / or the face mask via a hollow glue post 21 through a first injection molded part 2 on the bottom plate 1. Furthermore, the first injection molded part 2 is formed by injection molding into the connecting groove 11 of the bottom plate 1, eliminating the cumulative errors caused by secondary assembly in traditional processes, ensuring the positioning accuracy of the circuit board and the face mask, and improving the display quality. Moreover, the first injection molded part 2 is embedded in the connecting groove 11 and connected to the bottom plate 1, which improves the bonding force and avoids the risk of delamination. Thus, the display module bottom shell structure provided by this utility model simplifies the injection molding process by simplifying the complex die casting and assembly processes required by traditional stud frames. The process is simple, easy to mass-produce, and has high production efficiency.

[0023] In the optional scheme of this embodiment, it is more preferred that the cross-sectional dimension at the opening of each connecting groove 11 is smaller than the maximum cross-sectional dimension inside the connecting groove 11.

[0024] By setting the cross-sectional dimension of the opening of the connecting groove 11 to be smaller, a mechanical interlock is formed between the first injection molded part 2 and the base plate 1, which can further improve the connection stability between the first injection molded part 2 and the base plate 1 and prevent delamination; specifically, the cross-sectional shape of the connecting groove 11 is as follows: Figure 3 As shown, the cross-sectional dimensions of the accessories at the opening are the same to buffer and avoid stress concentration, and then gradually increase from top to bottom.

[0025] In the optional embodiments of this example, more preferably, the base plate 1 is further provided with a plurality of reinforcing ribs 12, the reinforcing ribs 12 protruding from the back of the base plate 1.

[0026] In particular, multiple downward-protruding ribs are formed in the central area of ​​the base plate 1 to strengthen the base plate 1.

[0027] More preferably, the cross-sectional dimensions of the reinforcing rib 12 gradually decrease from top to bottom; the cross-section of the reinforcing rib 12 is a trapezoid with a wider top and a narrower bottom, so as to maximize the enhancement effect on the strength of the base plate 1.

[0028] In the optional scheme of this embodiment, it is more preferred that each connecting groove 11 is disposed on the bottom upper side of the reinforcing rib 12.

[0029] The depth of the connecting groove 11 is approximately half the thickness of the base plate 1. The connecting groove 11 can be set as a continuous strip or discretely set as multiple strips as needed. Correspondingly, the first injection molded part 2 can be set as a strip parallel to the length direction of the reinforcing rib 12. Connecting grooves 11 can be set at both ends of each first injection molded part 2 so that the two ends of the first injection molded part 2 can be interlocked and fixed in two connecting grooves 11. Hollow glue pillars 21 are set on the first injection molded part 2 at the corresponding connection positions according to the fixing requirements with the circuit board or the face mask. In addition, multiple discrete connecting grooves 11 can also be set at the corresponding connection positions according to the fixing requirements with the circuit board or the face mask. A first injection molded part 2 is formed at each connecting groove 11 for connection.

[0030] In the optional scheme of this embodiment, more preferably, the base plate 1 is also provided with a plurality of functional blind holes, and each functional blind hole is formed with a hollow second injection molded part by injection molding, the second injection molded part being used to fix electronic devices.

[0031] In addition to the circuit board and the mask, the base plate 1 also needs to be connected and fixed to other electronic components such as light strips. Therefore, functional blind holes need to be set. In order to reduce the error caused by setting threaded posts for secondary assembly at the functional blind holes, a hollow second injection molded part is directly injection molded at the edge of the functional blind hole to connect and fix it with the electronic components. The positions of the functional blind holes and the second injection molded part are determined according to the actual needs.

[0032] In an optional embodiment, more preferably, the base plate 1 is provided with a folded edge 13 facing the back side, and a plurality of circumferentially distributed through holes 14 are provided on the base plate 1 near the folded edge 13. The folded edge 13 is covered by a third injection molded part 3 formed by injection molding, and the third injection molded part 3 can fill the through holes 14. The folded edge 13 is covered by the third injection molded part 3 formed by injection molding, and a connecting part 31 for connecting the circuit board and / or the face mask is provided on the upper side of the third injection molded part 3.

[0033] To further enhance the overall rigidity of the base plate 1, a folded edge 13 is formed by bending downwards at the peripheral edge for reinforcement. A third injection molded part 3 is then formed by injection molding the folded edge 13 to cover it and provide protection. Furthermore, a connecting part 31, such as a protrusion or a slot, can be provided on the upper side of the third injection molded part 3 as needed to engage with the drive plate and the faceplate, further reducing errors caused by secondary assembly. In addition, the third injection molded part 3 fills the through hole 14 to wrap around the folded edge 13, which can effectively suppress the shrinkage deformation of the third injection molded part 3 during molding and use, and significantly improve the control accuracy of the shrinkage deformation of the third injection molded part 3. Through the wrapping and cooperation between the third injection molded part 3 and the through hole 14, the overall mechanical strength of the third injection molded part 3 structure can be enhanced, and the load-bearing capacity and structural stability of the plastic structure can be optimized.

[0034] In the optional scheme of this embodiment, it is more preferred that the base plate 1 is a metal plate and is formed by stamping; and the connecting groove 11 is formed by milling the upper side of the base plate 1.

[0035] The base plate 1 is made of aluminum plate, and the metal aluminum plate is stamped into a preset shape using a stamping die. During this process, the folded edge 13, functional blind holes for installing electronic components, through holes 14, and multiple reinforcing ribs 12 with trapezoidal cross sections are formed simultaneously. Then, a milling cutter, such as an inverted "T" shape, is used to mill at a predetermined position at the bottom of the reinforcing rib 12 to process a connecting groove 11 with a depth of about half the thickness of the aluminum plate, forming a mechanical lock structure for anchoring the first injection molded part 2.

[0036] In the optional scheme of this embodiment, more preferably, a fixing part is also provided on the back side of the base plate 1, and a hollow fourth injection molded part 4 is formed on the outside of the fixing part by injection molding. The fourth injection molded part 4 is used to connect to the external fixing part.

[0037] In order to facilitate the fixing of the display module to the external fastener, an additional fixing part, such as a nut fixing post, needs to be set on the base plate 1. In order to avoid the assembly error caused by the secondary assembly of the nut fixing post, a hollow fourth injection molded part 4 can be directly injection molded at the fixing part position, with only the threaded hole of the nut or the end of the positioning post exposed, so as to facilitate subsequent locking and positioning installation. The nut or positioning post preset on the base plate 1 can be pre-fixed by riveting, and then the hollow fourth injection molded part 4 can be formed by injection molding.

[0038] In addition, it should be noted that in practical applications, connections can also be made at corresponding locations by injection molding irregularly shaped injection molded parts, depending on the connection requirements.

[0039] The following is a manufacturing process for the display module bottom shell structure provided in this embodiment: Stamping of base plate 1: Using a stamping die, the base plate 1 is stamped into a preset shape; during this process, the peripheral folded edge 13, functional blind holes for installing electronic components, through holes 14, and multiple reinforcing ribs 12 with trapezoidal cross sections are formed simultaneously.

[0040] Milling connecting groove 11: Using an inverted "T" shaped milling cutter, milling is performed at a predetermined position at the bottom of the reinforcing rib 12 to process a connecting groove 11 with a depth of about half the thickness of the aluminum plate, forming a mechanical lock structure for anchoring the first injection molded part 2.

[0041] Insert Injection Molding: The prepared base plate 1 is placed into the injection mold as an insert; engineering plastic is injected into the mold through injection molding. The plastic will cover the peripheral folded edge 13 of the aluminum plate to form the third injection molded part 3, cover the edge of the functional blind hole to form the second injection molded part, fix the preset nut and positioning post to form the fourth injection molded part 4, and form the first injection molded part 2 with the hollow plastic post 21 embedded in the milled anchoring groove 11; after cooling, the mold is opened to obtain the bottom shell structure formed by metal and plastic.

[0042] Thus, the display module bottom shell structure provided in this embodiment has the following technical effects: High precision: The aluminum sheet and each injection-molded part are joined together through a single injection molding process, eliminating the cumulative errors caused by secondary assembly in traditional processes. This ensures the positioning accuracy of components such as circuit boards and masks, and improves display quality.

[0043] High strength: The stamped aluminum sheet itself has good strength, and together with the circumferential folded edge 13 and the trapezoidal cross-section reinforcing rib 12, it ensures the overall mechanical properties of the bottom shell; the setting of the connecting groove 11 enables the bottom plate 1 and the plastic to achieve mechanical interlocking, with strong bonding force, avoiding the risk of delamination.

[0044] Simple process and easy to mass-produce: The complex die-casting and assembly process is simplified to three steps: "stamping → milling → injection molding". The process flow is greatly shortened, the production efficiency is high, and it is very suitable for large-scale automated production, which effectively reduces production costs.

[0045] Example 2 This embodiment provides a display module, including a circuit board, a face mask, and a display module base structure as provided in Embodiment 1. The circuit board and the face mask are assembled with the base by means of a first injection molded part 2, a second injection molded part, or a third injection molded part 3 formed on the base plate 1. This eliminates the cumulative error caused by secondary assembly in traditional processes, ensures the positioning accuracy of components such as the circuit board and the face mask, and improves the display quality.

[0046] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A display module bottom shell structure, characterized in that: include: A base plate, wherein multiple connecting grooves are provided on the base plate; Multiple first injection molded parts are formed by injection molding at each of the connecting grooves and can be respectively embedded in the multiple connecting grooves. Each first injection molded part is provided with a hollow glue post protruding from the connecting groove. The hollow glue post is used to fix the circuit board and / or the face mask.

2. The display module bottom shell structure according to claim 1, characterized in that: The cross-sectional dimensions at the opening of each of the connecting grooves are all smaller than the maximum cross-sectional dimensions inside the connecting groove.

3. The display module bottom shell structure according to claim 1, characterized in that: The base plate is also provided with a plurality of reinforcing ribs, which protrude from the back of the base plate.

4. The display module bottom shell structure according to claim 3, characterized in that: Each of the connecting grooves is located on the upper bottom side of the reinforcing rib.

5. The display module bottom shell structure according to claim 3, characterized in that: The cross-sectional dimensions of the reinforcing ribs gradually decrease from top to bottom.

6. The display module bottom shell structure according to claim 1, characterized in that: The base plate is also provided with a plurality of functional blind holes, and each of the functional blind holes is formed with a hollow second injection molded part by injection molding. The second injection molded part is used to fix electronic devices.

7. The display module bottom shell structure according to claim 1, characterized in that: The base plate is also provided with a folded edge facing the back side, and a plurality of circumferentially distributed through holes are provided on the base plate near the folded edge. The folded edge is covered by a third injection molded part formed by injection molding, and the third injection molded part can fill the through holes. The upper side of the third injection molded part is provided with a connecting part for connecting the circuit board and / or the face mask.

8. The display module bottom shell structure according to any one of claims 1-7, characterized in that: The base plate is made of metal and is formed by stamping; and the connecting groove is formed by milling the side of the base plate.

9. The display module bottom shell structure according to claim 1, characterized in that: The back side of the base plate is also provided with a fixing part, and a hollow fourth injection molded part is formed outside the fixing part by injection molding. The fourth injection molded part is used to connect to the external fixing part.

10. A display module, characterized in that: It includes a circuit board, a faceplate, and a display module bottom shell structure as described in any one of claims 1-9.

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