Waterproof back plate and backlight module

Abstract

This utility model relates to a waterproof backplate and a backlight module. The waterproof backplate includes a substrate and a retaining wall. The substrate includes an integrally formed bottom plate and a side plate. Nanopores are arranged in an array on the substrate. Adhesive-pull holes are provided at the connection points between the bottom plate and the side plates. The retaining wall has protrusions that mate with the adhesive-pull holes, and permeable portions extending into the nanopores. The advantages of this utility model are improved structural stability and good sealing performance.

Description

Technical Field

[0001] This utility model relates to the field of backlight module technology, specifically to a water-proof backplate and a backlight module. Background Technology

[0002] In the production of backlight modules for devices such as mobile phones, in order to reduce the overall weight and lower costs, the backplate of the backlight module is injection molded to form a retaining wall structure around it. This can replace the original one-piece die-cast metal backplate. However, the existing injection-molded backplate and retaining wall structure are generally connected in a planar manner. The planar connection of the backplate and retaining wall structure is prone to loosening or even separation when subjected to external forces, thereby affecting the structural stability and sealing of the overall backlight module. Utility Model Content

[0003] The purpose of this invention is to provide a back panel and backlight module that can improve structural stability and have good sealing properties to prevent water seepage.

[0004] A waterproof backplate includes a substrate and a retaining wall. The substrate includes an integrally formed bottom plate and a side plate. Nanopores are arranged in an array on the substrate. The connection between the bottom plate and the side plate is provided with adhesive-pulling holes. The retaining wall is provided with protrusions that cooperate with the adhesive-pulling holes and permeable portions extending into the nanopores.

[0005] In the above solution, a baffle is formed on the substrate by injection molding. Pull-out holes are set at the connection positions of the bottom plate and the side plate. During the molding of the baffle, a protrusion is formed at the position of the pull-out hole, forming an embedded connection structure. This connection method increases the connection area and connection strength between the baffle and the substrate. Compared with the traditional planar connection method, the protrusion is embedded in the pull-out hole, which can effectively resist the pulling and vibration of external forces, making it difficult for the baffle and the substrate to separate in complex usage environments, thus ensuring the stability of the overall structure of the backlight module. After processing, the substrate has nanopores arranged in an array. During injection molding, the permeable part of the baffle extends into the nanopores, thus forming a microscopic mechanical interlocking and physical adsorption effect. This combination improves the sealing performance of the connection between the substrate and the baffle, and can avoid the problem of water seepage at the pull-out hole position.

[0006] Furthermore, the cross-section of the adhesive-pulling hole is L-shaped.

[0007] In the above scheme, since the cross-section of the glue-pulling hole is L-shaped, the injection-molded protrusion can be connected to the base plate in part and to the side plate in part, thereby greatly enhancing the connection strength between the retaining wall and the base plate and ensuring the structural stability of the back plate.

[0008] Furthermore, the substrate is made of metal, and the retaining wall is made of plastic.

[0009] In the above scheme, the plastic retaining wall is formed by injection molding. Injection molding can quickly and efficiently manufacture retaining walls with complex shapes. Using plastic to make the retaining wall can effectively reduce the material cost of the entire back plate without affecting performance. The metal substrate can be processed by various processes, such as stamping and die casting. Since the substrate does not have a complex structure, the processing cost is low, thereby reducing the processing cost of the entire back plate.

[0010] Furthermore, the retaining wall is fitted to the inner side of the side plate.

[0011] In the above scheme, the baffle is connected to the substrate by means of protrusions and adhesive holes, and penetration and nanopores. When the baffle is attached to the inner side of the side plate, the contact area and connection points between the baffle and the substrate are further increased, and the connection between the two is strengthened. This makes the connection between the baffle and the substrate more stable and the sealing better.

[0012] Furthermore, the pore size of the nanopore is 50nm~200nm, and the depth is 100nm~500nm.

[0013] In the above scheme, chemical solutions are used to etch the surface of the metal substrate. By controlling parameters such as etching time, solution concentration and temperature, nanopores can be formed. The nanopores with a pore size of 50nm~200nm and a depth of 100nm~500nm are combined with the permeation part to form a tight sealing structure, which can prevent water seepage at the adhesive hole and improve the stability and sealing of the back plate.

[0014] Furthermore, the retaining wall is manufactured using a nano-injection molding process.

[0015] In the above scheme, the nano-injection molding process enables the plastic material of the retaining wall to fully penetrate into the nanopores on the surface of the metal substrate, forming a tight micro-mechanical interlocking structure.

[0016] Furthermore, one side of the retaining wall is provided with several evenly arranged limiting grooves.

[0017] In the above solution, the limiting groove provides stable support and fixation for the LED beads. During daily use of the mobile phone, it may be affected by external forces such as vibration and collision. The limiting groove can prevent the LED beads from shifting or shaking due to external forces, ensuring that the LED beads always remain in the correct position and maintain the normal working state of the backlight module. This can avoid problems such as uneven light distribution and abnormal display caused by changes in the position of the LED beads, thus improving the reliability and stability of the product. At the same time, the limiting groove is set on the baffle wall, indicating that the limiting groove is injection molded. Compared with the traditional back plate, which is made of metal, the processing cost and material cost are lower.

[0018] A backlight module includes a waterproof backplate as described in any of the above embodiments.

[0019] This utility model discloses a waterproof backplate and backlight module, which has the beneficial effects of improving structural stability and sealing performance. A baffle is formed on the substrate through injection molding. Pull-out holes are provided at the connection points of the bottom plate and side plates. During the molding of the baffle, protrusions are formed corresponding to the pull-out holes, forming an embedded connection structure. This connection method increases the connection area and strength between the baffle and the substrate. Compared with the traditional planar connection method, the protrusions embedded in the pull-out holes can effectively resist external pulling and vibration, making it difficult for the baffle and the substrate to separate under complex usage environments, ensuring the overall structural stability of the backlight module. After processing, the substrate has an array of nanopores. During injection molding, the permeable part of the baffle extends into the nanopores, thus forming a microscopic mechanical interlocking and physical adsorption effect. This combination improves the sealing performance of the connection between the substrate and the baffle, preventing water seepage at the pull-out holes. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the back panel in one embodiment.

[0021] Figure 2 This is a schematic diagram of a substrate structure according to one embodiment.

[0022] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0023] Figure 4 This is a schematic diagram of a retaining wall structure according to one embodiment.

[0024] Figure 5 for Figure 4 A magnified view of a section at point B.

[0025] Figure 6 This is a schematic diagram of a limiting groove in one embodiment.

[0026] The following are the symbols and their meanings: 1. Substrate; 11. Bottom plate; 12. Side plate; 2. Retaining wall; 3. Adhesive hole; 4. Protrusion; 5. Limiting groove. Detailed Implementation

[0027] The following will describe in further detail a waterproof backplate and backlight module of this utility model with reference to specific embodiments and accompanying drawings.

[0028] like Figures 1 to 5As shown in a preferred embodiment, the waterproof backplate of the present invention includes a substrate 1 and a retaining wall 2. The substrate 1 includes an integrally formed bottom plate 11 and a side plate 12. Nanopores are arranged in an array on the substrate 1. A glue-pulling hole 3 is provided at the connection position between the bottom plate 11 and the side plate 12. The retaining wall 2 is provided with a protrusion 4 that cooperates with the glue-pulling hole 3 and a permeable part extending into the nanopores.

[0029] A retaining wall 2 is formed on the substrate 1 by injection molding. A glue-pulling hole 3 is provided at the connection position of the bottom plate 11 and the side plate 12. When the retaining wall 2 is formed, a protrusion 4 is formed at the position of the glue-pulling hole 3, forming an embedded connection structure. This connection method increases the connection area and connection strength between the retaining wall 2 and the substrate 1. Compared with the traditional planar connection method, the protrusion 4 is embedded in the glue-pulling hole 3, which can effectively resist the pulling and vibration of external forces, making it difficult for the retaining wall 2 and the substrate 1 to separate in complex use environments, thus ensuring the stability of the overall structure of the backlight module.

[0030] Since water seepage may occur at the location of the adhesive-pulling hole 3, in addition to setting the adhesive-pulling hole 3 on the substrate 1, it is also necessary to process it to form an array of nanopores. When the baffle 2 is injection molded, the permeable part of the baffle 2 extends into the nanopores, thus forming a microscopic mechanical interlocking and physical adsorption effect. This combination improves the sealing performance of the connection between the substrate 1 and the baffle 2, and can avoid the problem of water seepage at the location of the adhesive-pulling hole 3.

[0031] like Figures 2 to 5 As shown, in some embodiments, the cross-section of the adhesive-pulling hole 3 is L-shaped. Because the cross-section of the adhesive-pulling hole 3 is L-shaped, the injection-molded protrusion 4 can be connected to the base plate 11 in part and to the side plate 12 in another part, thereby greatly enhancing the connection strength between the retaining wall 2 and the base plate 1 and ensuring the structural stability of the back plate.

[0032] In some embodiments, the substrate 1 is made of metal, and the retaining wall 2 is made of plastic. The plastic retaining wall 2 is formed by injection molding, which can quickly and efficiently manufacture retaining walls 2 with complex shapes. Using plastic to make the retaining wall 2 can effectively reduce the material cost of the entire backplate without affecting performance. The metal substrate 1 can be processed by various processes, such as stamping and die casting. Since the substrate 1 does not have a complex structure, the processing cost is low, thereby reducing the processing cost of the entire backplate.

[0033] like Figure 6As shown, in some embodiments, the baffle 2 is attached to the inner side of the side plate 12. The baffle 2 is connected to the substrate 1 through the engagement of the protrusion 4 with the adhesive hole 3 and the combination of the permeation part with the nanopore. When the baffle 2 is attached to the inner side of the side plate 12, the contact area and connection points between the baffle 2 and the substrate 1 are further increased, strengthening the connection between the two. This makes the connection between the baffle 2 and the substrate 1 more stable and the sealing performance better.

[0034] In some embodiments, the pore size of the nanopores is 50nm~200nm, and the depth is 100nm~500nm. Nanopores are formed by etching the surface of the metal substrate 1 with a chemical solution and controlling parameters such as etching time, solution concentration, and temperature. Since nanopore fabrication is an existing technology, the processing procedure and parameters will not be described in detail here. The nanopores with a pore size of 50nm~200nm and a depth of 100nm~500nm, combined with the permeable portion, form a tight sealing structure, which can prevent water seepage at the adhesive-retaining hole 3, improving the stability and sealing of the backplate.

[0035] In some embodiments, the retaining wall 2 is manufactured using a nano-injection molding process. The nano-injection molding process allows the plastic material of the retaining wall 2 to fully penetrate into the nanopores on the surface of the metal substrate 1, forming a tight micro-mechanical interlocking structure.

[0036] like Figure 6 As shown, in some embodiments, a plurality of evenly arranged limiting grooves 5 are provided on one side of the retaining wall 2. The limiting grooves 5 provide stable support and fixation for the LED beads. During the daily use of mobile phones and other devices, they may be affected by external forces such as vibration and collision. The limiting grooves 5 can prevent the LED beads from shifting or shaking due to external forces, ensuring that the LED beads always remain in the correct position and maintain the normal working state of the backlight module. This can avoid problems such as uneven light distribution and abnormal display caused by changes in the position of the LED beads, thus improving the reliability and stability of the product. At the same time, the fact that the limiting grooves 5 are set on the retaining wall 2 indicates that the limiting grooves 5 are injection molded, which is lower in processing and material costs compared to the traditional backplates which are all made of metal.

[0037] like Figures 1 to 6 As shown, in a preferred embodiment, a backlight module includes a water-proof backplate as described in any of the above embodiments.

[0038] This utility model discloses a waterproof backplate and backlight module. The working principle and process are as follows: A baffle 2 is formed on a substrate 1 through injection molding. A glue-pulling hole 3 is provided at the connection position between the bottom plate 11 and the side plate 12. During the molding of the baffle 2, a protrusion 4 is formed corresponding to the glue-pulling hole 3, forming an embedded connection structure. Since water seepage can occur at the glue-pulling hole 3, in addition to the glue-pulling hole 3 on the substrate 1, an array of nanopores is formed through processing. During the injection molding of the baffle 2, the permeable portion of the baffle 2 extends into the nanopores, thus forming a microscopic mechanical interlocking and physical adsorption effect. This combination improves the sealing performance between the substrate 1 and the baffle 2, preventing water seepage at the glue-pulling hole 3.

[0039] In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A waterproof back panel, characterized in that, The substrate (1) includes a base plate (11) and a barrier (2). The base plate (1) includes an integrally formed bottom plate (11) and a side plate (12). The base plate (1) has an array of nanopores. The connection between the bottom plate (11) and the side plate (12) is provided with a glue-pulling hole (3). The barrier (2) is provided with a protrusion (4) that cooperates with the glue-pulling hole (3) and a permeation portion extending into the nanopores.

2. The water-tight backsheet according to claim 1, characterized in that The cross-section of the adhesive-pulling hole (3) is L-shaped.

3. The water-tight backsheet according to claim 1, characterized in that The substrate (1) is made of metal, and the retaining wall (2) is made of plastic.

4. The water-resistant backsheet according to claim 1, wherein The retaining wall (2) is attached to the inner side of the side plate (12).

5. The water-tight backsheet according to claim 1, characterized in that The nanopores have a diameter of 50nm~200nm and a depth of 100nm~500nm.

6. The water-tight backsheet according to claim 1, characterized in that The retaining wall (2) is made using a nano-injection molding process.

7. The water-tight backsheet according to claim 1, characterized in that The back plate has several evenly arranged limiting grooves (5) on one side.

8. A backlight module, characterized in that, Includes a waterproof backing as described in any one of claims 1 to 7.

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