A waterproof sealing structure for LCD screens
By employing a multi-layered waterproof sealing structure, including a nitrile rubber sealing layer, a polytetrafluoroethylene film waterproof layer, and a silicone desiccant, the problem of insufficient waterproof sealing performance of LCD screens is solved, achieving effective waterproofing and long-life protection in complex environments.
Patent Information
- Application Number
- CN202521984729.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-16
- Publication Date
- 2026-07-03
- Estimated Expiration
- 2035-09-16
AI Technical Summary
Existing LCD screens lack sufficient waterproof sealing performance, allowing liquids to easily seep in from the bezel joints and the contact points between the LCD screen and the front and rear frames. Furthermore, the sealing materials are prone to aging in high and low temperature environments, making them unsuitable for complex usage scenarios, leading to display malfunctions and shortened lifespan.
The first and second sealing layers, made of nitrile rubber, form a continuous sealing ring. The polytetrafluoroethylene film serves as a waterproof layer that is tightly bonded to the LCD screen. Silica gel desiccant absorbs moisture, and the waterproof coating directly protects the display surface. It is precisely connected to the four docking holes and docking rods to form a multi-layer waterproof sealing structure.
It significantly improves the waterproof sealing effect, prevents liquid from seeping in, keeps the inside dry, extends the life of the LCD screen, adapts to a wide temperature range, and balances waterproof and heat dissipation performance.
Smart Images
Figure CN224457187U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of LCD screen technology, specifically to a waterproof sealing structure for LCD screens. Background Technology
[0002] Existing LCD screens often exhibit significant deficiencies in their waterproof sealing performance during use. Common sealing structures mostly rely on a single sealing method, such as a simple seal only at the bezel joint. This design is insufficient to completely prevent liquid from seeping in through various gaps, especially at the contact points between the LCD screen and the front and rear frames. Due to the complexity of the structural connections, these areas are more prone to becoming weak points for liquid penetration. Once liquid enters, it not only affects the normal display of the LCD screen but may also directly damage internal electronic components.
[0003] In addition, the materials used in some sealing structures are not good in terms of temperature resistance and stability. They are prone to aging and deformation in alternating high and low temperatures or extreme temperature environments, which can lead to sealing failure and make them unsuitable for use in various complex scenarios such as outdoor and industrial control. At the same time, if moisture exists inside the LCD screen for a long time, it will gradually erode the internal structure of the screen, causing malfunctions such as blurry display, bright spots or dark spots, which will seriously shorten the life of the LCD screen and increase maintenance costs. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] The purpose of this utility model is to provide a waterproof sealing structure for LCD screens, so as to solve the problem mentioned in the background art that the existing LCD screens have insufficient waterproof sealing performance and that liquid can easily seep in from the frame bonding area and the contact area between the LCD screen and the front and rear frames.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: a waterproof sealing structure for an LCD screen, comprising a rear panel, a front frame movably disposed at the front of the rear panel, a viewing groove fixedly disposed on the inner side of the front frame, a docking hole fixedly disposed at the front of the rear panel, a first waterproof layer fixedly disposed on the inner side of the rear panel, a docking rod fixedly disposed at the rear of the front frame, a second waterproof layer fixedly disposed on the inner side of the front frame, a drying layer fixedly disposed on the inner side of the rear panel, a first sealing layer fixedly disposed at the front of the rear panel, and a second sealing layer fixedly disposed at the rear of the front frame.
[0008] Preferably, a liquid crystal screen body is movably disposed on the inner side of the rear plate and the front frame, and a waterproof coating is fixedly disposed on the front of the liquid crystal screen body.
[0009] Preferably, the first sealing layer and the second sealing layer are disposed at the joint between the rear panel and the front frame, and the materials of the first sealing layer and the second sealing layer are nitrile rubber; the first sealing layer and the second sealing layer made of nitrile rubber have good oil resistance and wear resistance, and can maintain stable sealing performance in the temperature range of -40℃ to 120℃. After the two are joined, they form a continuous sealing ring, which completely covers the joint gap between the rear panel and the front frame.
[0010] Preferably, the drying layer is located on the inner side of the rear panel that is attached to the main body of the LCD screen. The material of the drying layer is silica gel desiccant. The silica gel desiccant is filled in a breathable cloth bag and fixed to the inner side of the rear panel. The filling amount is 0.5 to 1 g per square centimeter. It can absorb moisture in the internal space of the rear panel and the front frame, keep the internal environment dry, and the silica gel desiccant can be replaced through a detachable cover plate provided on the rear panel.
[0011] Preferably, the first waterproof layer and the second waterproof layer are located on the side of the back panel and the front frame that are in contact with the LCD screen body, respectively. The materials of the first waterproof layer and the second waterproof layer are polytetrafluoroethylene (PTFE) films. The PTFE film has a thickness of 0.1 to 0.2 mm, has excellent corrosion resistance and non-stick properties, and is tightly attached to the surface of the LCD screen body. It can prevent liquid from seeping in from the contact points between the back panel and the front frame and the LCD screen body, while not affecting the normal heat dissipation of the LCD screen body.
[0012] Preferably, there are four docking holes, and the size of the docking holes corresponds to the size of the docking rod.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. The waterproof sealing structure of this LCD screen, by setting a first sealing layer and a second sealing layer, utilizes the good temperature resistance and stability of nitrile rubber to form a continuous sealing ring in the range of -40℃ to 120℃, effectively sealing the gap between the back panel and the front frame, significantly improving the waterproof sealing effect at the frame, and solving the problem of inadequate sealing in traditional single sealing methods.
[0015] 2. The waterproof sealing structure of this LCD screen uses polytetrafluoroethylene film for the first and second waterproof layers. It has excellent corrosion resistance and sealing performance, and is tightly attached to the main body of the LCD screen. It can effectively prevent liquid from seeping in from the contact parts between the LCD screen and the front and rear frames. At the same time, because the film thickness is moderate, it will not affect the normal heat dissipation of the LCD screen, thus taking into account both waterproof and heat dissipation performance.
[0016] 3. The waterproof and sealed structure of this LCD screen, by setting up a drying layer and using silica gel desiccant with reasonable control of the filling amount, can continuously absorb moisture in the internal space, maintain a dry internal environment, and avoid moisture damage to the LCD screen. The removable and replaceable design ensures that the drying layer can play a long-term role and extend the service life of the LCD screen.
[0017] 4. The waterproof sealing structure of this LCD screen directly protects the display surface by setting a waterproof coating on the front of the LCD screen body, reducing damage caused by direct contact with liquids; at the same time, the docking holes at the four corners cooperate with the docking rods to ensure precise docking and firm fixation between the back panel and the front frame, so that each waterproof sealing structure can work together to further improve the overall waterproof sealing performance. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;
[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;
[0020] Figure 3 This is a three-dimensional structural diagram of the front frame of this utility model;
[0021] Figure 4 This is a three-dimensional structural diagram of the rear plate of this utility model.
[0022] In the diagram: 1. Rear panel; 2. Front frame; 3. Viewing slot; 4. Connecting hole; 5. First waterproof layer; 6. Connecting rod; 7. Second waterproof layer; 8. Drying layer; 9. First sealing layer; 10. Second sealing layer; 11. LCD screen body; 12. Waterproof coating. Detailed Implementation
[0023] 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.
[0024] Please see Figure 1 - Figure 4This utility model provides a technical solution: a waterproof sealing structure for an LCD screen, including a rear plate 1, a front frame 2 movably disposed in front of the rear plate 1, a viewing groove 3 fixedly disposed on the inner side of the front frame 2, a docking hole 4 fixedly disposed in front of the rear plate 1, a first waterproof layer 5 fixedly disposed on the inner side of the rear plate 1, a docking rod 6 fixedly disposed at the rear of the front frame 2, a second waterproof layer 7 fixedly disposed on the inner side of the front frame 2, a drying layer 8 fixedly disposed on the inner side of the rear plate 1, a first sealing layer 9 fixedly disposed in front of the rear plate 1, and a second sealing layer 10 fixedly disposed at the rear of the front frame 2.
[0025] A liquid crystal screen body 11 is movably disposed on the inner side of the rear panel 1 and the front frame 2. A waterproof coating 12 is fixedly disposed on the front of the liquid crystal screen body 11. A first sealing layer 9 and a second sealing layer 10 are disposed at the joint between the rear panel 1 and the front frame 2. The materials of the first sealing layer 9 and the second sealing layer 10 are nitrile rubber. The first sealing layer 9 and the second sealing layer 10 made of nitrile rubber have good oil resistance and wear resistance, and can maintain stable sealing performance in the temperature range of -40℃ to 120℃. After the two are joined, they form a continuous sealing ring, which completely covers the joint gap between the rear panel 1 and the front frame 2.
[0026] The drying layer 8 is located on the inner side of the back panel 1, on the side that is in contact with the LCD screen body 11. The material of the drying layer 8 is silica gel desiccant. The silica gel desiccant is filled in a breathable cloth bag and fixed to the inner side of the back panel 1. Its filling amount is 0.5 to 1 g per square centimeter. It can absorb moisture in the internal space of the back panel 1 and the front frame 2, keeping the internal environment dry. The silica gel desiccant can be replaced through the removable cover plate provided on the back panel 1. The first waterproof layer 5 and the second waterproof layer 7 are located on the side of the back panel 1 and the front frame 2 that are in contact with the LCD screen body 11, respectively. The material of the first waterproof layer 5 and the second waterproof layer 7 is polytetrafluoroethylene film. The thickness of the polytetrafluoroethylene film is 0.1 to 0.2 mm. It has excellent corrosion resistance and non-stick properties. It is tightly attached to the surface of the LCD screen body 11 and can prevent liquid from seeping in from the contact parts between the back panel 1 and the front frame 2 and the LCD screen body 11. At the same time, it does not affect the normal heat dissipation of the LCD screen body 11. There are four docking holes 4. The size of the docking holes 4 corresponds to the size of the docking rod 6.
[0027] Working principle: When installing the waterproof sealing structure of the LCD screen, firstly, the LCD screen body 11 is placed inside the rear plate 1, so that it is tightly attached to the first waterproof layer 5. At this time, the drying layer 8 is located behind the LCD screen body 11, which can absorb internal moisture at any time. Next, the connecting rod 6 of the front frame 2 is aligned with the connecting hole 4 of the rear plate 1 and inserted, so that the front frame 2 and the rear plate 1 are precisely connected. During this process, the second waterproof layer 7 on the inner side of the front frame 2 is attached to the front of the LCD screen body 11, and the first sealing layer 9 and the second sealing layer 10 are connected to form a sealing ring, thus connecting the rear plate 1 and the front frame. The joints of the frame 2 are sealed, and the waterproof coating 12 on the front of the LCD screen body 11 can directly resist the contact of external liquids. The first waterproof layer 5 and the second waterproof layer 7 prevent liquids from seeping in from the contact area between the LCD screen body 11 and the front and rear frames. When the drying layer 8 absorbs moisture to a certain extent, it can be replaced by the removable cover on the back plate 1 to keep the inside dry. During use, the first sealing layer 9 and the second sealing layer 10 made of nitrile rubber can maintain stable sealing performance at different temperatures, ensuring that the waterproof sealing effect of the overall structure is durable and reliable.
[0028] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.
Claims
1. A waterproof sealing structure of LCD liquid crystal screen, comprising a back plate (1), characterized in that: A front frame (2) is movably provided in front of the rear plate (1). A viewing slot (3) is fixedly provided on the inner side of the front frame (2). A docking hole (4) is fixedly provided in front of the rear plate (1). A first waterproof layer (5) is fixedly provided on the inner side of the rear plate (1). A docking rod (6) is fixedly provided at the rear of the front frame (2). A second waterproof layer (7) is fixedly provided on the inner side of the front frame (2). A drying layer (8) is fixedly provided on the inner side of the rear plate (1). A first sealing layer (9) is fixedly provided in front of the rear plate (1). A second sealing layer (10) is fixedly provided at the rear of the front frame (2).
2. The waterproof sealing structure of LCD liquid crystal screen according to claim 1, characterized in that: The LCD screen body (11) is movably disposed on the inner side of the rear plate (1) and the front frame (2), and a waterproof coating (12) is fixedly disposed on the front of the LCD screen body (11).
3. The waterproof sealing structure of an LCD liquid crystal screen according to claim 2, characterized in that: The first sealing layer (9) and the second sealing layer (10) are disposed at the joint between the rear plate (1) and the front frame (2), and the materials of the first sealing layer (9) and the second sealing layer (10) are nitrile rubber.
4. The waterproof sealing structure of an LCD liquid crystal screen according to claim 3, characterized in that: The drying layer (8) is located on the side of the back panel (1) that is attached to the main body of the LCD screen (11), and the material of the drying layer (8) is silica gel desiccant.
5. The waterproof sealing structure of an LCD liquid crystal screen according to claim 4, characterized in that: The first waterproof layer (5) and the second waterproof layer (7) are respectively located on the side of the back panel (1) and the front frame (2) that are attached to the main body of the LCD screen (11). The materials of the first waterproof layer (5) and the second waterproof layer (7) are polytetrafluoroethylene films.
6. The waterproof sealing structure of LCD liquid crystal screen according to claim 1, characterized in that: There are four docking holes (4), and the size of the docking holes (4) corresponds to the size of the docking rod (6).