Display screen with electromagnetic compatibility sealing structure

Abstract

The utility model relates to the technical field of display screens, in particular to a display screen with an electromagnetic compatibility sealing structure. The display screen with the electromagnetic compatibility sealing structure comprises an installation frame and a display screen module, the installation frame is provided with an installation window used for installing the display screen module, the display screen further comprises an electromagnetic shielding layer, a buffer layer and a fixed pressing plate, the electromagnetic shielding layer is bonded on the installation window, and the buffer layer is bonded on the fixed pressing plate. And the buffer layer is arranged above the electromagnetic shielding layer in a surrounding manner. The fixed pressing plate is arranged above the buffer layer and is used for fixing the buffer layer and the electromagnetic shielding layer; according to the utility model, the front end of the display screen is provided with a plurality of paving layers which are respectively used for electromagnetic shielding and buffer sealing, so that the effects of protecting the display screen and improving the shock resistance of the electromagnetic shielding layer are realized, and the problem that fragile components such as the electromagnetic shielding layer in the display screen are easy to damage in a vibration shock environment is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of display screens, in particular to a display screen with an electromagnetic compatibility sealing structure. Background Art

[0002] With the continuous development of modern electronic devices, displays, as key interactive interfaces, have been widely used in various fields, including harsh environments such as vehicles and ships. However, traditional display designs often fail to fully consider electromagnetic compatibility (EMC) and sealing issues in vibration and shock environments. In these environments, displays face challenges such as electromagnetic interference, external vibration and shock, and moisture intrusion, which can cause device performance degradation or even failure. For example, automotive displays must operate normally under frequent vibration, shock, and complex electromagnetic environments, but conventional display designs often cannot effectively meet these requirements.

[0003] Existing display screen designs mostly focus on either waterproofing or electromagnetic shielding. However, in vibration and impact environments, few solutions can simultaneously take into account the performance of both. This is because the display screen's electromagnetic shielding layer, glass components and other vulnerable parts are easily damaged, which in turn leads to a decrease in the system's electromagnetic shielding effectiveness, affecting the display screen's signal stability and even causing the display panel to shatter, increasing the difficulty of maintenance and repair.

[0004] In view of the above situation, in order to overcome the above technical problems, the present invention designs a display screen with an electromagnetic compatibility sealing structure, which solves the above technical problems. Summary of the Invention

[0005] The technical purpose to be achieved by the present utility model is: by arranging multiple layers for electromagnetic shielding and buffer sealing at the front end of the display screen, the display screen is protected and the impact resistance of the electromagnetic shielding layer is improved, thereby solving the problem that fragile components such as the electromagnetic shielding layer inside the display screen are easily damaged in a vibration and impact environment.

[0006] In order to achieve the above technical objectives, the present invention provides the following technical solutions:

[0007] The utility model provides a display screen with an electromagnetic compatibility sealing structure, including a mounting frame and a display screen module. The mounting frame is provided with an installation window for installing the display screen module, and also includes an electromagnetic shielding layer, a buffer layer and a fixed pressure plate. The electromagnetic shielding layer is bonded to the installation window, and the buffer layer is arranged around the electromagnetic shielding layer.

[0008] The fixed pressure plate is installed above the buffer layer to secure the buffer layer and the electromagnetic shielding layer. The display module is mounted on the fixed pressure plate. The fixed pressure plate is located above the buffer layer and is responsible for securing the electromagnetic shielding layer and the buffer layer, ensuring that these components do not loosen or shift during installation.

[0009] A buffer layer is placed between the electromagnetic shielding layer and the fixed pressure plate to mitigate vibration and shock, preventing damage to fragile components such as the electromagnetic shielding layer and glass components. The buffer layer surrounds the electromagnetic shielding layer, providing effective protection and enhancing the display's impact resistance.

[0010] The electromagnetic shielding layer consists of a transparent layer and a metal mesh. The transparent layer contains the metal mesh through an intermediate layer. The edges of the metal mesh extend beyond the edges of the transparent layer and fit into the mounting frame, forming a closed metal physical field inside. This enhances the electromagnetic shielding effect, reduces external electromagnetic interference, and ensures the signal stability of the display.

[0011] The metal wire mesh extends beyond the edge of the transparent layer and is in contact with the mounting frame.

[0012] To meet IP66 waterproofing requirements, the display is sealed with 704 glue. A minimum 0.1mm thick layer of 704 glue is applied between the transparent layer and the mounting frame. This glue is not only flexible but also effectively prevents moisture from penetrating, ensuring electromagnetic shielding and display performance are not disrupted. Shielding cloth is applied to the surface of the wire mesh to secure it.

[0013] A gap of at least 0.1 mm is maintained between the front end of the display module and the fixed pressure plate. This gap provides a certain amount of space between the display module and the fixed pressure plate, thereby achieving a cushioning effect. When subjected to vibration or impact, the display module can produce slight displacement within this gap, reducing direct collisions between the display module and the pressure plate or other structural components. This protects the front end of the display module from excessive physical impact, effectively reducing the risk of damage to the display module.

[0014] In some high-precision or electromagnetically sensitive applications, the gap between the display module and the fixed pressure plate can also help avoid electrostatic discharge caused by physical contact, thereby reducing interference with the display module during operation and further improving electromagnetic compatibility (EMC).

[0015] Furthermore, different materials have different coefficients of expansion when exposed to temperature fluctuations. Providing a gap helps maintain a certain relative position between the display module and the fixed pressure plate during temperature fluctuations, preventing physical deformation or damage caused by differential thermal expansion of materials and ensuring the stability of the device under various environmental conditions.

[0016] The beneficial effects of the utility model are as follows:

[0017] 1. The utility model provides a buffer layer between the electromagnetic shielding layer and the fixed pressure plate to provide buffer protection for the electromagnetic shielding layer, effectively solving the problem of damage caused by collision between the glass components and the electromagnetic shielding layer when the display screen is impacted, while improving the reliability and stability of the internal design.

[0018] 2. The utility model adopts a sandwich design for the electromagnetic shielding layer, and utilizes the metal wire mesh extending from the sandwich layer to be fully laid on the installation frame, so that a closed metal physical field is formed inside, thereby improving the electromagnetic shielding effect and enhancing the signal reception and display stability of the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] The above and other aspects of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which:

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the installation relationship of the display screen module of the utility model;

[0023] Figure 3 This utility model Figure 2 Cross-sectional view at AA;

[0024] Figure 4 This is a schematic diagram of the installation relationship of the fixed pressure plate of the utility model;

[0025] Figure 5 This utility model Figure 4 Cross-sectional view at BB;

[0026] Figure 6 This is a schematic structural diagram of the buffer layer of the utility model;

[0027] Figure 7 It is a structural schematic diagram of the electromagnetic shielding layer of the utility model;

[0028] Figure 8This is a specific parameter design diagram of the electromagnetic shielding layer of the utility model;

[0029] Figure 9 It is a specific parameter design diagram of the buffer layer of the utility model.

[0030] In the figure: 1. Mounting frame; 11. Mounting window; 2. Display module; 3. Electromagnetic shielding layer; 31. Transparent layer; 32. Metal mesh; 33. Shielding cloth; 4. Buffer layer; 5. Fixed pressure plate. DETAILED DESCRIPTION

[0031] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0032] like Figure 1-9 As shown, the display screen with an electromagnetic compatible sealing structure provided by the present invention includes a mounting frame 1 and a display screen module 2. The mounting frame 1 is provided with an installation window 11 for installing the display screen module 2, and also includes an electromagnetic shielding layer 3, a buffer layer 4 and a fixed pressure plate 5. The electromagnetic shielding layer 3 is bonded to the installation window 11, and the buffer layer 4 is arranged around the electromagnetic shielding layer 3.

[0033] In this embodiment, the product includes a display module 2 and can be used in vehicles and ships. It can withstand vibration and shock environments while meeting IP66 waterproofing and electromagnetic compatibility requirements. Conventional structural designs struggle to achieve both waterproofing and electromagnetic compatibility, resulting in low reliability and significant production and maintenance challenges. Even when achieving both waterproofing and electromagnetic compatibility, the display, touchpad, or transparent window materials such as wired glass can easily crack under vibration and shock.

[0034] The opening of the display screen module 2 of the host is waterproofed by 704 silicone, that is, the mounting frame 1 and the wired glass are connected and isolated by 704 glue, so that a physically closed waterproof cavity is formed inside.

[0035] The fixed pressing plate 5 is installed above the buffer layer 4 and is used to fix the buffer layer 4 and the electromagnetic shielding layer 3 ; the display screen module 2 is arranged on the fixed pressing plate 5 .

[0036] In this embodiment, if Figure 6 As shown, the electromagnetic shielding layer 3 includes a transparent layer 31 and a metal mesh 32, and the middle layer of the transparent layer 31 is provided with a metal mesh 32; at the opening of the host display screen, electromagnetic compatibility is ensured by the metal mesh 32 of the electromagnetic shielding layer 3, that is, the internal metal mesh 32 of the transparent layer 31 is connected to the inner wall of the mounting frame 1, so that a closed metal physical field is formed inside.

[0037] In this embodiment, if Figure 7 and Figure 8As shown, the metal mesh 32 extends beyond the edge of the transparent layer 31 , and the metal mesh 32 is in contact with the mounting frame 1 .

[0038] Electromagnetic shielding layer 3 is specifically made of wired glass. To protect the fragile glass, a 0.2mm thick layer of 704 glue (flexible) is applied to one side between transparent layer 31 and mounting frame 1. The other side is cushioned by the cushioning foam in cushioning layer 4. Shielding cloth 33 is laid on the surface of wire mesh 32 to secure it.

[0039] The display screen of the display screen module 2 is specifically designed to be mounted on the housing without contacting the mounting frame 1, thereby reserving a buffer safety area and effectively increasing the impact resistance. In this embodiment, as shown in FIG. Figure 3 As shown, a gap of 0.1 mm is provided between the liquid crystal display front end of the display module and the physical structure of the fixed pressing plate 5 .

[0040] The specific installation process is as follows:

[0041] First, install the wired glass of the electromagnetic shielding layer 3, and install the installation area of ​​the display screen module 2 on the frame 1. A stepped glue storage tank is opened. The glue storage tank is used to calibrate the application range and amount of glue. In this embodiment, the glue storage tank is arranged in a circle around the installation window 11, specifically 1 mm wide and 0.3 mm deep.

[0042] like Figure 8 As shown, the transparent layer 31 is specifically wired glass, which is double-layer glass with a metal mesh 32 in the middle. The metal mesh 32 has an extra 4.5mm of glass on each side, and is cut according to the surrounding size during installation.

[0043] When installing wired glass, apply 704 silicone glue to the glue groove of the cavity. The glue groove is convenient and quick to operate. When applying glue, fill the groove and apply glue in a quantitative manner.

[0044] Next, apply the shielding cloth 33. Cut the excess wire mesh 32 around the perimeter to the appropriate size and affix it to the recessed groove surrounding the installation window 11. Cut another shielding cloth 33 to the appropriate size based on the recessed groove. Apply the wire mesh 32 for the wired glass to the inner wall of the mounting frame 1, wrapping it around the entire surface. The shielding cloth 33 restricts movement of the wire mesh 32 and ensures adequate contact between the mesh and the cavity, ensuring grounding.

[0045] Then the buffer layer 4 is loaded, as shown in 9, and a circle of buffer foam is padded around the shielding cloth 33, and the buffer foam is 0.5 mm thick.

[0046] The pressure plate is then installed, pressing down on the cushioning foam while also holding down the wired glass below. Finally, the display module 2 consists of a display, display circuit board, and mounting bracket, all of which are independent modules. The display module 2 is installed independently within the main body cavity of the mounting frame 1, independent of other components such as the wired glass, and maintaining a 0.1mm gap. This ensures a cushioning space during impact, preventing damage to the display and wired glass.

[0047] Although one or more exemplary embodiments of the present disclosure have been described with reference to the drawings, persons skilled in the art will understand that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the following claims.

[0048] The foregoing description is merely a glimpse into the modifications that may be made to the present invention in light of the above detailed description. The terms used in the appended claims should not be construed to limit the present invention to the specific embodiments disclosed in the specification. Instead, the scope of the present invention is to be determined entirely by the appended claims, which are to be construed in accordance with established doctrines of claim interpretation.

Claims

1. A display screen with an electromagnetic compatibility sealing structure, comprising a mounting frame (1) and a display screen module (2), wherein the mounting frame (1) is provided with a mounting window (11) for mounting the display screen module (2), and wherein: It also includes an electromagnetic shielding layer (3), a buffer layer (4) and a fixed pressure plate (5), wherein the electromagnetic shielding layer (3) is bonded to the installation window (11), and the buffer layer (4) is disposed around and above the electromagnetic shielding layer (3); The fixed pressing plate (5) is installed above the buffer layer (4) and is used to fix the buffer layer (4) and the electromagnetic shielding layer (3); the display screen module (2) is arranged on the fixed pressing plate (5).

2. The display screen with an electromagnetic compatibility sealing structure according to claim 1, characterized in that: The electromagnetic shielding layer (3) comprises a transparent layer (31) and a metal wire mesh (32), wherein the metal wire mesh (32) is provided in the middle interlayer of the transparent layer (31); The metal mesh (32) extends beyond the edge of the transparent layer (31) on all sides, and the metal mesh (32) is in contact with the mounting frame (1) on all sides.

3. The display screen with an electromagnetic compatibility sealing structure according to claim 2, characterized in that: A 704 glue having a thickness of at least 0.1 mm is applied between the transparent layer (31) and the mounting frame (1), and a shielding cloth (33) is laid on the surface of the metal mesh (32), and the shielding cloth (33) is used to fix the metal mesh (32).

4. The display screen with an electromagnetic compatibility sealing structure according to claim 1, wherein: There is a gap of at least 0.1 mm between the front end of the display screen module (2) and the fixed pressing plate (5).

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