Anti-dazzle anti-interference display touch screen and terminal equipment

Abstract

An anti-dazzle anti-interference display touch screen and terminal equipment, comprising a display screen, a sensing surface of the display screen is bonded with a touch module, and a part of the touch module is covered with an electromagnetic shielding layer to ensure the integrity of a display signal of the display touch screen and prevent external interference; the touch module comprises a functional piece and a cover plate which are bonded with each other, at least one side of the cover plate is provided with an anti-dazzle structure, and a rough structure of the anti-dazzle structure can convert direct light into diffuse reflection, so that dazzle of the display touch screen is reduced, visibility is improved, and durability is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of electronic display technology, and in particular to an anti-glare and anti-interference display touch screen and terminal device. Background Technology

[0002] In the unique operating environments of ports and ships, touchscreen displays face numerous challenges. Ports are typically open or semi-open, frequently exposed to strong light, including direct sunlight, reflections from the water, and intense glare from the surrounding water. Ships, while navigating, are also subjected to a variety of complex lighting conditions, including sunlight, water reflections, and various port lights. In these environments, traditional touchscreen displays without anti-glare features can produce glare due to specular reflection, resulting in blurry screen content. This makes it difficult for users to accurately read screen information, severely impacting operators' monitoring, operation, and information acquisition, potentially leading to operational errors and posing a potential threat to port operational efficiency and ship navigation safety. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an anti-glare and anti-interference display touch screen and terminal device.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] An anti-glare and anti-interference display touch screen includes a display screen, a touch module is bonded to the sensing surface of the display screen, an electromagnetic shielding layer is covered on a portion of the touch module, the touch module includes a functional sheet and a cover plate bonded to each other, the functional sheet is disposed between the display screen and the cover plate, and the cover plate has an anti-glare structure on at least one side.

[0006] Furthermore, the touch module also includes a shielding film, which is adhered between the display screen and the functional piece.

[0007] Furthermore, the touch module also includes an FPC circuit board, which is electrically connected to the functional chip.

[0008] Furthermore, the FPC circuit board is electrically connected to a control motherboard.

[0009] Furthermore, the electromagnetic shielding layer is made of copper foil, which covers the bottom, sides and top of the touch module.

[0010] Furthermore, the shielding film sequentially comprises a protective layer, a copper alloy layer, and a PET release film.

[0011] Furthermore, the display screen, shielding film, functional sheet, and cover plate are bonded together with optical adhesive.

[0012] Furthermore, the display screen and the shielding film are bonded together by a first optical adhesive, the shielding film and the functional sheet are bonded together by a second optical adhesive, and the functional sheet and the cover plate are bonded together sequentially by a third optical adhesive.

[0013] A terminal device includes a housing and a display touch screen as described above, the display touch screen being installed within the housing.

[0014] Furthermore, conductive foam adhesive is provided between the housing and the electromagnetic shielding layer.

[0015] The beneficial effects of this utility model are:

[0016] 1. The present invention proposes an anti-glare and anti-interference display touch screen, comprising a display screen, a touch module bonded to the sensing surface of the display screen, and an electromagnetic shielding layer covering a portion of the touch module to ensure the integrity of the display signal of the display touch screen and prevent external interference; the touch module includes a functional sheet and a cover plate bonded together, and the cover plate has an anti-glare structure on at least one side. The rough structure of the anti-glare structure can convert direct light into diffuse reflection to reduce the glare of the display touch screen, improve visibility and enhance durability.

[0017] 2. This utility model proposes an anti-glare and anti-interference display touch screen. The touch module also includes a shielding film, which can effectively block external electromagnetic signals from interfering with the touch module, ensuring the accuracy and stability of the touch signal. The shielding film is bonded between the display screen and the functional sheet. The shielding film includes a protective layer, a copper alloy layer, and a PET release film. The copper alloy layer can form a continuous conductive network, attenuating electromagnetic waves through reflection and absorption.

[0018] 3. This utility model proposes an anti-glare and anti-interference display touch screen. The touch module also includes an FPC circuit board, which is electrically connected to the functional chips to transmit various signals. The FPC circuit board is electrically connected to a control motherboard, enabling multiple functional applications.

[0019] 4. The present invention proposes an anti-glare and anti-interference display touch screen, wherein the electromagnetic shielding layer is made of copper foil, which covers the bottom, sides and top of the touch module. It can prevent external electromagnetic interference and internal electromagnetic leakage, and can also serve as a physical barrier to prevent dust, liquid and other impurities from entering the interior of the touch module.

[0020] 5. The present invention proposes an anti-glare and anti-interference display touch screen, wherein the display screen, shielding film, functional sheet and cover plate are bonded together by optical adhesive, the display screen and the shielding film are bonded together by a first optical adhesive, the shielding film and the functional sheet are bonded together by a second optical adhesive, and the functional sheet and the cover plate are bonded together by a third optical adhesive in sequence. Different optical adhesives with different properties are selected according to specific application scenarios and needs to meet the requirements of optical performance and mechanical performance.

[0021] 6. The terminal device proposed in this utility model includes a housing, which is grounded to the display touch screen via conductive foam adhesive, enabling the terminal device to operate stably in complex electromagnetic environments and complying with electromagnetic compatibility standards. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is one of the schematic diagrams of an anti-glare and anti-interference display touch screen according to the present invention;

[0024] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0025] Figure 3 This is a second schematic diagram of an anti-glare and anti-interference display touch screen according to the present invention;

[0026] Figure 4 for Figure 3 A magnified view of a section at point B in the middle;

[0027] Figure 5 This is a schematic diagram of a terminal device according to the present invention;

[0028] In the diagram, 10 is the display screen; 20 is the electromagnetic shielding layer; 30 is the shielding film; 40 is the functional piece; 50 is the cover plate; 60 is the FPC circuit board; 70 is the control motherboard; 801 is the first optical adhesive; 802 is the second optical adhesive; 803 is the third optical adhesive; 90 is the housing; 100 is the conductive foam adhesive; 110 is the protective film tear handle; and 120 is the backing adhesive. Detailed Implementation

[0029] Example 1

[0030] The following is combined Figures 1 to 4 This embodiment will be described in detail.

[0031] An anti-glare and anti-interference display touch screen includes a display screen 10. A touch module is bonded to the sensing surface of the display screen 10. A portion of the touch module is covered with an electromagnetic shielding layer 20 to ensure the integrity of the display signal of the display screen 10 and prevent external interference. The touch module includes a functional sheet 40 and a cover plate 50 bonded together. The functional sheet 40 is disposed between the display screen 10 and the cover plate 50, and the cover plate 50 has an anti-glare structure on at least one side. The rough structure of the anti-glare structure can convert direct light into diffuse reflection to reduce the glare of the display screen 10, improve visibility, and enhance durability.

[0032] Specifically, the functional chip 40 is equipped with a G-sensor, which can dynamically adjust the screen brightness and touch sensitivity to adapt to strong or weak light environments. The cover plate 50 is an AG cover plate 50, whose anti-glare structure has a surface roughness Ra value ranging from 0.1 to 0.3 μm and a reflectivity ≤2%. This anti-glare structure is achieved through one or a combination of chemical etching and nano-coating processes. The AG cover plate 50 obtained by chemical etching and nano-coating processes has excellent performance. Tests showed that after being placed in a salt spray environment for 72 hours, the cover plate 50 in this embodiment did not exhibit powdering or yellowing, demonstrating excellent corrosion resistance; after being placed under ultraviolet radiation for 1000 hours, the surface still did not show powdering or yellowing, demonstrating high resistance to ultraviolet aging and maintaining its performance under long-term sunlight exposure. Furthermore, the light transmittance of the cover plate 50 is ≥92%, ensuring a clear and bright display effect; the haze is ≤5%, indicating good light transmittance and a clear display effect.

[0033] In this embodiment, the touch module further includes a shielding film 30, which is adhered between the display screen 10 and the functional sheet 40. The shielding film 30 can be a nano-silver film, ITO film, or metal mesh film, etc., with a sheet resistance between 0.1 and 30 ohms per square block to avoid poor shielding effect due to excessive sheet resistance. In this embodiment, the shielding film 30 sequentially includes a protective layer, a copper alloy layer, and a PET release film, with the protective layer positioned close to the display screen 10. Specifically, the total thickness of the shielding film 30 is ≤0.2mm, the protective layer is a PET substrate, and the copper alloy layer has a purity ≥99.9%, composed of high-purity copper, which can significantly reduce resistance and improve the efficiency and performance of the display screen 10.

[0034] In this embodiment, as Figure 1 and Figure 2 As shown, the touch module also includes an FPC circuit board 60, which is electrically connected to the functional chip 40 and to the control motherboard 70. The FPC circuit board 60 is capable of transmitting various signals and implementing multiple functional applications. The FPC circuit board 60 features a low-impedance design, providing an efficient and stable transmission path for touch signals. It also integrates a grounding path to reduce electromagnetic interference and static electricity buildup, thereby improving the sensitivity of the display screen 10.

[0035] In this embodiment, the electromagnetic shielding layer 20 is made of copper foil, which covers the bottom, sides and top of the touch module to suppress edge leakage magnetic field and common mode interference. It can also serve as a physical barrier to prevent dust, liquid and other impurities from entering the interior of the touch module.

[0036] In this embodiment, as Figure 3 and Figure 4 As shown, the display screen 10, shielding film 30, functional sheet 40, and cover plate 50 are bonded together using optical adhesive. The display screen 10 and shielding film 30 are bonded together using a first optical adhesive 801, the shielding film 30 and functional sheet 40 are bonded together using a second optical adhesive 802, and the functional sheet 40 and cover plate 50 are bonded together using a third optical adhesive 803. The first optical adhesive 801, second optical adhesive 802, and third optical adhesive 803 are selected according to specific application scenarios and requirements. In some embodiments, the same optical adhesive can be used. In this embodiment, the first optical adhesive 801 is a liquid optically transparent adhesive, specifically LOCA optical adhesive, with a light transmittance ≥98% and haze ≤1%, capable of eliminating air layers, reducing light reflection loss, and enhancing impact resistance. The second optical adhesive 802 is a solid optical adhesive, specifically OCA optical adhesive. The third optical adhesive 803 is a flexible optical adhesive, specifically SCA optical adhesive, capable of buffering mechanical stress. Bonding with LOCA optical adhesive is performed in a vacuum environment to eliminate air bubbles and stress concentration. After applying LOCA optical adhesive, it is cured by ultraviolet (UV) irradiation and further cured by heating at 80 degrees Celsius for 2 hours. The cured LOCA optical adhesive has a hardness of ≥4H, a temperature resistance range of -50℃ to 120℃, and will not easily lose its properties.

[0037] This embodiment provides an anti-glare and anti-interference display touchscreen, which has passed EN 55032 Class B (radiated emissions) and IEC 61000-4-3 (immunity) certifications, enabling stable operation in complex electromagnetic environments. In vibration testing, no structural loosening or display abnormalities were observed in a 10-500Hz / 3Grms environment, demonstrating a robust internal structure. In impact testing, no glass shattered under a 50G / 11ms half-sine wave, indicating that it remains intact after accidental drops or impacts. Furthermore, the display touchscreen exhibits high contrast under strong light and accurate color over a wide viewing angle, making it suitable for various usage scenarios. Even in a 10,000 lux strong light environment, the contrast ratio of the display touchscreen still reaches or exceeds 1000:1, the viewing angle reaches 178 degrees, and the color deviation (ΔE) does not exceed 3.

[0038] Example 2

[0039] A terminal device, such as Figure 5As shown, the device includes a housing 90 and a display / touchscreen as described above. The display / touchscreen is installed inside the housing 90, and the housing can conduct away residual charge, forming a closed shielded circuit. Conductive foam adhesive 100 is provided between the housing 90 and the electromagnetic shielding layer 20. Adhesive backing 120 is also provided between the housing 90 and the cover plate 50 to ensure the display / touchscreen is stably installed inside the housing 90. Specifically, the adhesive backing 120 is double-sided adhesive conductive cloth.

[0040] During installation, apply a 0.25mm thick layer of OCA optical adhesive to the sensor side of the functional chip 40. Then, apply a 0.25mm thick shielding film 30 to the other side of the OCA adhesive, with the substrate side of the shielding film 30 covered by OCA optical adhesive, leaving the conductive side exposed. Wrap the exposed side of the shielding film 30 with a 0.05mm thick copper foil, which is then wrapped around the surface of the cover plate 50. A 0.2-3mm thick layer of conductive foam adhesive 100 is then applied to the surface of the copper foil, and finally, the conductive foam adhesive 100 is attached to the housing 90. The near-end resistance from the housing 90 ground to the shielding film 30 should be controlled between 5-15 ohms, adjusted according to the product size and the sheet resistance of the shielding film 30. The lower the resistance between the motherboard's exposed copper ground and the far end of the shielding film 30, the better the shielding effect and the superior EMI performance.

[0041] In this embodiment, the touch signal line of the terminal device adopts differential signal transmission, transmitting signals through two complementary signal lines to reduce electromagnetic interference and improve signal anti-interference capability and signal integrity. The touch signal line also employs a grounding design, where the touch signal line is wrapped by a ground layer to form a shielding layer, reducing external electromagnetic interference. Through these two designs, the sensitivity of the touch signal line to electromagnetic radiation is reduced, allowing the terminal device to operate more stably in electromagnetic environments. A protective film is affixed to the side of the cover plate 50 away from the functional piece 40, and the protective film is equipped with a protective film tear handle 110.

[0042] The terminal device in this embodiment can utilize a 3.5-inch to 42-inch display touchscreen, supporting customized resolutions (up to 4K) and touch protocols (USB / RS485 / CAN). It can shield interference signals from the LCD display 10, motherboard, etc. The liquid optical transparent adhesive (transmittance ≥98%, haze ≤1%) eliminates air layers, reduces light reflection loss, and enhances impact resistance. The AG cover plate 50 effectively blocks the strong sunlight refraction at sea, resulting in better touch performance and a better user experience.

[0043] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A glare-proof and interference-resistant display touchscreen, comprising a display screen, characterized in that, The touch module is bonded to the sensing surface of the display screen. Part of the touch module is covered with an electromagnetic shielding layer. The touch module includes a functional sheet and a cover plate bonded together. The functional sheet is located between the display screen and the cover plate, and the cover plate has an anti-glare structure on at least one side.

2. The anti-glare and anti-interference display touch screen as described in claim 1, characterized in that, The touch module also includes a shielding film, which is adhered between the display screen and the functional piece.

3. The anti-glare and anti-interference display touch screen as described in claim 2, characterized in that, The touch module also includes an FPC circuit board, which is electrically connected to the functional chip.

4. The anti-glare and anti-interference display touch screen as described in claim 3, characterized in that, The FPC circuit board is electrically connected to the control motherboard.

5. The anti-glare and anti-interference display touch screen as described in claim 4, characterized in that, The electromagnetic shielding layer is made of copper foil, which covers the bottom, sides and top of the touch module.

6. The anti-glare and anti-interference display touch screen as described in claim 2, characterized in that, The shielding film comprises, in sequence, a protective layer, a copper alloy layer, and a PET release film.

7. The anti-glare and anti-interference display touch screen as described in claim 3, characterized in that, The display screen, shielding film, functional sheet, and cover plate are bonded together with optical adhesive.

8. The anti-glare and anti-interference display touch screen as described in claim 7, characterized in that, The display screen and the shielding film are bonded together by a first optical adhesive, the shielding film and the functional sheet are bonded together by a second optical adhesive, and the functional sheet and the cover plate are bonded together by a third optical adhesive in sequence.

9. A terminal device, characterized in that, It includes a housing and a display touchscreen as described in any one of claims 1-8, wherein the display touchscreen is mounted within the housing.

10. A terminal device as described in claim 9, characterized in that, Conductive foam adhesive is provided between the housing and the electromagnetic shielding layer.

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