Liquid crystal display screen mounting structure

Abstract

The utility model discloses a liquid crystal display screen mounting structure, which relates to the technical field of liquid crystal display screens, and comprises a front cover, a middle frame, a display screen component and a human body inductive switch, and the human body inductive switch is mounted on the middle frame and is electrically connected with the display screen component. The human body induction switch can control the display screen assembly to be closed according to whether a human body is inducted or not, a groove body used for installing the display screen assembly is formed in the upper end face of the middle frame, and the display screen assembly comprises a capacitive touch screen, a liquid crystal display screen and an irregular net shielding film which are sequentially arranged from top to bottom. The irregular net shielding film is installed between the capacitive touch screen and the liquid crystal display screen, the capacitive touch screen, the liquid crystal display screen and the irregular net shielding film are optically bound, and a shielding element is arranged at the contact position of the irregular net shielding film and the middle frame. The intelligent level of equipment can be improved, the operation is simple, and the electromagnetic shielding requirement can be met.

Description

A liquid crystal display mounting structure Technical Field

[0001] This utility model relates to the field of liquid crystal display technology, and in particular to a liquid crystal display mounting structure. Background Technology

[0002] With the acceleration of informatization, information processing equipment is being used more and more widely. When they are working, they not only generate electromagnetic radiation, but also electromagnetic information leakage, which leads to the theft and restoration of classified information and causes leakage incidents.

[0003] However, ordinary handheld terminals have low levels of electromagnetic protection, resulting in significant electromagnetic wave leakage during operation. The radiation frequencies range from low to high, and the wave sources include magnetic field waves, electric field waves, and electromagnetic waves. Studies have shown that electromagnetic waves radiated from ordinary handheld terminals without electromagnetic shielding can be intercepted and recovered from a distance of one kilometer. With highly sensitive equipment, the maximum interception distance will be even greater. In such cases, if the information processed by the device is critical, it can easily lead to information leakage, compromising information security.

[0004] Handheld terminals often have displays installed to show information. However, traditional displays cannot effectively prevent information leakage, and thus cannot guarantee the security of classified information. Summary of the Invention

[0005] The purpose of this utility model is to provide a liquid crystal display screen mounting structure to solve the problems existing in the prior art, improve the intelligence level of the equipment, simplify operation, and meet electromagnetic shielding requirements.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] This utility model provides a liquid crystal display screen mounting structure, including a front cover, a middle frame, a display screen assembly, and a human body sensor switch. The human body sensor switch is mounted on the middle frame and is electrically connected to the display screen assembly. The human body sensor switch can control the display screen assembly to turn off based on whether a human body is detected. The upper surface of the middle frame is provided with a groove for mounting the display screen assembly. The display screen assembly includes a capacitive touch screen, a liquid crystal display screen, and an irregular mesh shielding film arranged sequentially from top to bottom. The irregular mesh shielding film is installed between the capacitive touch screen and the liquid crystal display screen, and the capacitive touch screen, the liquid crystal display screen, and the irregular mesh shielding film are optically bonded together. A shielding element is provided at the contact position between the irregular mesh shielding film and the middle frame.

[0008] Preferably, the upper surface of the middle frame is provided with an embedded groove, the embedded groove is located near the outer ring of the middle frame, and the shielding element is installed in the embedded groove.

[0009] Preferably, the outer edge of the capacitive touch screen extends from the liquid crystal display screen, and the irregular mesh shielding film covers the lower end surface of the capacitive touch screen. When the middle frame is connected to the front cover, the capacitive touch screen can press the irregular mesh shielding film and the shielding element tightly above the embedded groove, and the shielding element is located at the lower end of the irregular mesh shielding film.

[0010] Preferably, the shielding element is a conductive rubber sheet.

[0011] Preferably, the display assembly further includes a touch control panel, a shielding chamber is provided between the lower end of the liquid crystal display and the upper end of the middle frame, the touch control panel is installed in the shielding chamber, and the touch control panel is electrically connected to the liquid crystal display via a flexible flat cable.

[0012] Preferably, the touch control panel is equipped with a filtering circuit.

[0013] Preferably, the sensing angle of the human body sensor switch is 45° downward angle to 45° upward angle, and the sensing distance of the human body sensor switch is within 0.3m.

[0014] Preferably, the upper surface of the middle frame is also provided with a sensing groove, the human body sensor switch is installed in the sensing groove, and the middle frame is provided with a wire outlet hole for the connection cable of the human body sensor switch to pass through. The connection cable is wrapped with a conductive cloth around its outer periphery at the position corresponding to the wire outlet hole, and the conductive cloth is filled between the inner wall of the wire outlet hole and the outer wall of the connection cable.

[0015] Preferably, the upper end face of the middle frame is provided with a raised ring, and the inner sidewall of the raised ring is used to limit the outer periphery of the capacitive touch screen.

[0016] Preferably, the middle frame and the front cover are connected by screws.

[0017] The present invention achieves the following technical advantages over the prior art:

[0018] This utility model provides a liquid crystal display installation structure, including a front cover, a middle frame, a display assembly, and a human body sensor switch. The human body sensor switch is mounted on the middle frame and is electrically connected to the display assembly. Combining the human body sensor switch and the display assembly significantly improves the device's intelligence level. The human body sensor switch can control the display assembly to turn off based on whether a human body is detected. When a worker enters the sensing range of the human body sensor switch, the switch detects changes in the human body's infrared spectrum. At this time, pressing the power button activates the device. As long as the worker does not leave the sensing range, the device will remain operational. When the worker leaves the sensing range, the switch can no longer detect human information, and the device automatically shuts off, preventing eavesdropping and protecting the user's privacy and sensitive information within the device, reducing the risk of leaks, and improving security. Simultaneously, it reduces unnecessary energy consumption, achieving energy saving and providing convenience for users. It is also simple and easy to use, improving user experience and energy efficiency. The upper surface of the middle frame is provided with a groove for installing the display screen assembly, ensuring that the display screen assembly can be stably installed within the middle frame. The display screen assembly includes a capacitive touch screen, an LCD screen, and a random mesh shielding film arranged sequentially from top to bottom. The random mesh shielding film is installed between the capacitive touch screen and the LCD screen, and has high shielding effectiveness across the entire wavelength band without moiré fringes. The capacitive touch screen, LCD screen, and random mesh shielding film are optically bonded together. After bonding, not only can the shielding requirements be better met, but the shock resistance and optical performance of the LCD screen can also be effectively improved. Shielding elements are provided at the contact points between the random mesh shielding film and the middle frame. Electromagnetic protection measures are used to effectively prevent electromagnetic information leakage from the LCD screen during use. Through the above-mentioned shielding measures, this utility model has excellent shielding effectiveness across the entire wavelength band, ensuring that the electromagnetic radiation and conducted emission indicators meet the requirements of GJB4216-2001 "Electromagnetic Leakage Emission Requirements and Measurement of Cryptographic Machines", effectively preventing information leakage and ensuring the security of classified information. Attached Figure Description

[0019] 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.

[0020] Figure 1 is a top view of the liquid crystal display installation structure in this utility model;

[0021] Figure 2 is an exploded view of the liquid crystal display screen mounting structure in this utility model;

[0022] Figure 3 is a schematic diagram of the installation position of the display screen assembly in this utility model;

[0023] Figure 4 is a schematic diagram of the installation position of the human body induction switch in this utility model;

[0024] Figure 5 is a schematic diagram of the sensing range of the human body induction switch in this utility model;

[0025] In the diagram: 100 - LCD screen mounting structure, 1 - front cover, 2 - capacitive touch screen, 3 - irregular mesh shielding film, 4 - LCD screen, 5 - middle frame, 6 - touch control panel, 7 - human body induction switch, 8 - conductive rubber plate, 9 - flexible flat cable, 10 - conductive rubber strip, 11 - connecting cable. Detailed Implementation

[0026] 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.

[0027] The purpose of this utility model is to provide a liquid crystal display screen mounting structure to solve the problems existing in the prior art, improve the intelligence level of the equipment, simplify operation, and meet electromagnetic shielding requirements.

[0028] 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.

[0029] As shown in Figures 1-5, this embodiment provides a liquid crystal display screen mounting structure 100, including a front cover 1, a middle frame 5, a display screen assembly, and a human body sensor switch 7. The human body sensor switch 7 is mounted on the middle frame 5 and is electrically connected to the display screen assembly. Combining the human body sensor switch 7 with the display screen assembly significantly improves the intelligence level of the device. The human body sensor switch 7 can control the display screen assembly to turn off based on whether a human body is detected. When a worker enters the sensing range of the human body sensor switch 7, the switch detects a change in the infrared spectrum of the human body. At this time, pressing the power button activates the device. As long as the worker does not leave the sensing range of the switch, the device will remain operational. When the worker leaves the sensing range, the switch cannot detect human information, and the device automatically shuts off, preventing others from peeping and protecting the privacy and sensitive information of users within the device, reducing the risk of leakage, and improving security. Simultaneously, it reduces unnecessary energy consumption, achieving energy saving and providing convenience for users. It is also simple and convenient to use, enhancing the user experience. For energy efficiency, the upper surface of the middle frame 5 is milled with a groove for mounting the display screen assembly, ensuring that the display screen assembly can be stably installed within the middle frame 5. The display screen assembly includes a capacitive touch screen 2, an LCD screen 4, and an irregular mesh shielding film 3 arranged sequentially from top to bottom. The irregular mesh shielding film 3 is installed between the capacitive touch screen 2 and the LCD screen 4, and has high shielding effectiveness across the entire wavelength band without moiré fringes. The capacitive touch screen 2, the LCD screen 4, and the irregular mesh shielding film 3 are optically bonded together. After bonding, not only can the shielding requirements be better met, but the shock resistance and optical performance of the LCD screen 4 can also be effectively improved. Shielding elements are provided at the contact position between the irregular mesh shielding film 3 and the middle frame 5. Electromagnetic protection measures are used to effectively prevent electromagnetic information leakage from the LCD screen 4 during use. Through the above-mentioned shielding measures, this embodiment has excellent shielding effectiveness across the entire wavelength band, and the electromagnetic radiation and conducted emission indicators can meet the requirements of GJB4216-2001 "Electromagnetic Leakage Emission Requirements and Measurement of Cryptographic Machines", effectively preventing information leakage and ensuring the security of classified information.

[0030] Specifically, the upper surface of the middle frame 5 is provided with an embedded groove, which is located near the outer ring of the middle frame 5, and the shielding element is installed in the embedded groove.

[0031] The outer edge of the capacitive touch screen 2 extends to the liquid crystal display screen 4, and the irregular mesh shielding film 3 covers the lower end surface of the capacitive touch screen 2. The middle frame 5 is connected to the front cover 1. When the liquid crystal display screen 4 is installed in the slot, it can ensure that the capacitive touch screen 2 presses the irregular mesh shielding film 3 and the shielding element tightly above the embedded slot, and the shielding element is located at the lower end of the irregular mesh shielding film 3, and the irregular mesh shielding film 3 is in close contact with the shielding element.

[0032] The shielding element is a conductive rubber plate 8, which is an aluminum-plated silver conductive rubber plate 8. Electrical continuity is achieved by extruding and deforming the conductive rubber plate 8, effectively blocking the leakage of electromagnetic waves at the gaps and achieving a better shielding effect.

[0033] As a preferred embodiment, the capacitive touch screen 2 in this embodiment uses the current sensing of the human body to detect electric shock. It is mainly composed of a glass substrate, an ITO conductive layer and a protective layer. It supports multi-touch and is scratch-resistant and oil-resistant.

[0034] The display assembly also includes a touch control panel 6. A shielding chamber is provided between the lower end of the LCD screen 4 and the upper end of the middle frame 5. The touch control panel 6 is installed in the shielding chamber to achieve signal shielding. The touch control panel 6 is electrically connected to the LCD screen 4 via a flexible flat cable 9. The touch control panel 6 is also interconnected with other devices via flexible flat cables 9 to avoid external radiation.

[0035] The touch control panel 6 is equipped with a filtering circuit, which enables the touch control panel 6 to provide charge to the electrodes of the capacitive touch screen 2 while also filtering the signal fed back by the capacitive touch screen 2.

[0036] The human body sensor switch 7 features low power consumption and is placed in a separate cavity from other internal components within the middle frame 5. Its sensing angle is 45° downwards to 45° upwards, and its sensing distance is within 0.3m, thus covering a relatively wide area and ensuring a sensing diameter of 0.6m. As a preferred embodiment, the human body sensor switch 7 is designed to automatically shut down the device after 10 seconds of no human presence detected.

[0037] The upper surface of the middle frame 5 is also provided with a sensing groove, in which the human body induction switch 7 is installed. The middle frame 5 is also provided with a wire outlet hole, which is semi-circular. The wire outlet hole is used for the connection cable 11 of the human body induction switch 7 to pass through. Since holes are one of the main causes of leakage of the shield, a conductive cloth is wrapped around the outer periphery of the connection cable 11 at the position corresponding to the wire outlet hole. The conductive cloth is made of aluminum and fills the space between the inner wall of the wire outlet hole and the outer wall of the connection cable 11. The wrapped connection cable 11 can completely fill the wire outlet hole with the conductive cloth. Thus, when the screw is used to tighten the back cover, the connection cable 11 at the wire outlet hole is also pressed tightly, ensuring that the electromagnetic waves inside the device will not leak at the wire outlet hole, thus achieving the shielding effectiveness requirements.

[0038] The upper surface of the middle frame 5 is provided with a raised ring. The inner sidewall of the raised ring is used to limit the outer periphery of the capacitive touch screen 2, thereby improving the installation stability of the capacitive touch screen 2 and preventing the capacitive touch screen 2 from shaking.

[0039] The middle frame 5 is connected to the front cover 1 by screws, and a conductive rubber strip 10 is provided at the contact position between the upper end face of the middle frame 5 and the lower end face of the front cover 1, so that the electrical continuity can be satisfied by the compression deformation of the conductive rubber strip 10, and the shielding effectiveness requirements can be met.

[0040] 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 liquid crystal display screen mounting structure, characterized in that: The device includes a front cover, a middle frame, a display screen assembly, and a human body sensor switch. The human body sensor switch is mounted on the middle frame and is electrically connected to the display screen assembly. The human body sensor switch can control the display screen assembly to turn off based on whether a human body is detected. The upper surface of the middle frame has a groove for mounting the display screen assembly. The display screen assembly includes a capacitive touch screen, a liquid crystal display screen, and a random mesh shielding film arranged sequentially from top to bottom. The random mesh shielding film is installed between the capacitive touch screen and the liquid crystal display screen, and the capacitive touch screen, the liquid crystal display screen, and the random mesh shielding film are optically bonded together. A shielding element is provided at the contact position between the random mesh shielding film and the middle frame.

2. The liquid crystal display screen mounting structure according to claim 1, characterized by: The upper surface of the middle frame is provided with an embedded groove, which is located near the outer ring of the middle frame, and the shielding element is installed in the embedded groove.

3. The liquid crystal display screen mounting structure according to claim 2, characterized in that: The outer edge of the capacitive touch screen extends from the liquid crystal display screen, and the irregular mesh shielding film covers the lower end surface of the capacitive touch screen. When the middle frame is connected to the front cover, the capacitive touch screen can press the irregular mesh shielding film and the shielding element tightly above the embedded groove, and the shielding element is located at the lower end of the irregular mesh shielding film.

4. The liquid crystal display screen mounting structure according to claim 2, characterized in that: The shielding element is a conductive rubber plate.

5. The liquid crystal display screen mounting structure according to claim 3, characterized in that: The display assembly also includes a touch control panel. A shielding chamber is provided between the lower end of the liquid crystal display and the upper end of the middle frame. The touch control panel is installed in the shielding chamber and is electrically connected to the liquid crystal display via a flexible flat cable.

6. The liquid crystal display screen mounting structure according to claim 5, characterized in that: The touch control panel is equipped with a filtering circuit.

7. The liquid crystal display screen mounting structure according to claim 1, wherein: The sensing angle of the human body sensor switch is 45° downward angle to 45° upward angle, and the sensing distance of the human body sensor switch is within 0.3m.

8. The liquid crystal display screen mounting structure according to claim 1, wherein: The upper surface of the middle frame is also provided with a sensing groove, the human body sensor switch is installed in the sensing groove, and the middle frame is provided with a wire outlet hole for the connection cable of the human body sensor switch to pass through. The connection cable is wrapped with a conductive cloth around its outer periphery at the position corresponding to the wire outlet hole, and the conductive cloth is filled between the inner wall of the wire outlet hole and the outer wall of the connection cable.

9. The liquid crystal display screen mounting structure according to claim 1, characterized in that: The upper surface of the middle frame is provided with a raised ring, and the inner sidewall of the raised ring is used to limit the outer periphery of the capacitive touch screen.

10. The liquid crystal display screen mounting structure according to claim 1, characterized by: The middle frame is connected to the front cover by screws.

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