Coated cover plate capable of improving electromagnetic shielding performance and liquid crystal display screen

Abstract

The utility model discloses a film-coated cover plate and a liquid crystal display capable of improving electromagnetic shielding performance, the film-coated cover plate comprises a glass substrate, and a magnesium fluoride layer, a methacryloxysilane layer and a titanium nitride layer which are sequentially stacked on the upper surface of the glass substrate from bottom to top, the thickness of the magnesium fluoride layer is 5nm-10nm, the thickness of the methacryloxysilane layer is 5nm-10nm, and the thickness of the titanium nitride layer is 5nm-10nm. The thickness of the methacryloxysilane layer is 20 nm to 30 nm, and the thickness of the titanium nitride layer is 5 nm to 10 nm. The magnesium fluoride layer utilizes the characteristics of excellent light transmittance and low refractive index, so that light reflection is reduced, and the light transmittance and definition are improved; the performance of the cover plate is further enhanced through the high hardness, the scratch resistance and the potential electromagnetic shielding function of the methylacryloyloxy silane layer; and the titanium nitride layer serves as the outermost layer, additional hardness and wear resistance are provided, and meanwhile good corrosion resistance is achieved. The hardness, the light transmittance, the scratch resistance and the electromagnetic shielding performance of the coated cover plate are improved.

Description

Technical Field

[0001] This utility model relates to the field of liquid crystal display technology, and more specifically, to a coated cover plate and a liquid crystal display screen that improve electromagnetic shielding performance. Background Technology

[0002] With the increasing demand for high-performance cover materials in consumer electronics, automotive displays, and outdoor electronic products, traditional glass covers face challenges in terms of hardness, abrasion resistance, optical performance, and special functions. While existing coating technologies can improve cover performance to some extent, they often struggle to simultaneously meet the requirements for special functions such as hardness, light transmittance, scratch resistance, and electromagnetic shielding. Utility Model Content

[0003] The technical problem to be solved by this utility model is how to improve the hardness, light transmittance, scratch resistance and electromagnetic shielding performance of the coated cover plate.

[0004] The technical problem to be solved by this utility model is achieved through the following technical solution:

[0005] To solve the above-mentioned technical problems, this utility model provides a coated cover plate for improving electromagnetic shielding performance, which includes a glass substrate and a magnesium fluoride layer, a methacryloxysilane layer and a titanium nitride layer sequentially stacked on the upper surface of the glass substrate from bottom to top. The thickness of the magnesium fluoride layer is 5nm-10nm, the thickness of the methacryloxysilane layer is 20nm-30nm, and the thickness of the titanium nitride layer is 5nm-10nm.

[0006] As a preferred embodiment of the coating cover plate for improving electromagnetic shielding performance provided by this utility model, a thermochromic ink layer is provided on the lower surface of the glass substrate located in the non-display area.

[0007] As a preferred embodiment of the coating cover plate for improving electromagnetic shielding performance provided by this utility model, the thickness of the thermochromic ink layer is 8μm-10μm.

[0008] As a preferred embodiment of the coating cover plate for improving electromagnetic shielding performance provided by this utility model, a metal protective layer is provided on the lower surface of the thermochromic ink layer, and the metal protective layer completely covers the thermochromic ink layer.

[0009] In a preferred embodiment of the coated cover plate for improving electromagnetic shielding performance provided by this utility model, the material of the metal protective layer is aluminum.

[0010] As a preferred embodiment of the coating cover plate for improving electromagnetic shielding performance provided by this utility model, the thickness of the metal protective layer is 5μm-8μm.

[0011] This utility model provides a liquid crystal display screen, which includes a backlight module, an LCD module, and a coated cover plate for improving electromagnetic shielding performance as described in any of the above. The LCD module is disposed above the backlight module, and the glass substrate is disposed above the LCD module.

[0012] In a preferred embodiment of the liquid crystal display screen provided by this utility model, the LCD module includes an upper polarizer, an upper substrate, a lower substrate, and a lower polarizer arranged sequentially from top to bottom. The contact surface between the upper polarizer and the upper substrate is provided with PSA adhesive. The backlight module is provided with a metal frame, and the metal frame is provided with a contact area. The outer edges of the LCD module and the backlight module are provided with an opaque conductive material. One end of the opaque conductive material extends to the metal frame and partially wraps the metal frame, and the other end of the opaque conductive material extends to the PSA adhesive and is connected to the PSA adhesive.

[0013] In a preferred embodiment of the liquid crystal display screen provided by this utility model, the material of the opaque conductive material is copper foil or aluminum foil.

[0014] In a preferred embodiment of the liquid crystal display screen provided by this utility model, the other end of the opaque conductive material extends to the glass substrate and exceeds the glass substrate by 0.1mm-0.2mm.

[0015] This utility model has the following beneficial effects:

[0016] The glass substrate, as the base layer of the entire structure, provides the necessary strength and transparency. The magnesium fluoride layer reduces reflection, improves light transmittance and clarity, and also possesses certain chemical stability and hardness. The methacryloxysilane layer enhances the hardness and scratch resistance of the glass substrate, while its high thermal conductivity and potential electromagnetic shielding function add extra performance to the glass substrate. Furthermore, the methacryloxysilane layer can form strong chemical bonds with subsequent layers or substrates through its reactive functional groups. The titanium nitride layer further increases surface hardness and wear resistance, while also providing good corrosion resistance. The layered structure of the cover plate coating layer in this patent is based on the latest research results in materials science. Through a precise coating process, a magnesium fluoride layer, a methacryloxysilane layer, and a titanium nitride layer are sequentially deposited on the surface of the glass substrate to form a high-performance front coating layer. The magnesium fluoride layer, with its excellent light transmittance and low refractive index, reduces light reflection and improves light transmittance and clarity. The methacryloxysilane layer further enhances the cover plate's performance through its high hardness, scratch resistance, and potential electromagnetic shielding function. The titanium nitride layer, as the outermost layer, provides additional hardness and wear resistance, while also exhibiting good corrosion resistance. This enhances the hardness, light transmittance, scratch resistance, and electromagnetic shielding performance of the coated cover plate. Attached Figure Description

[0017] To more clearly illustrate the solutions in this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This utility model provides a structural schematic diagram of a coated cover plate for improving electromagnetic shielding performance.

[0019] Figure 2 This is a schematic diagram of the structure of a liquid crystal display screen provided by this utility model.

[0020] Explanation of icon numbers:

[0021] 1. Glass substrate; 11. Magnesium fluoride layer; 12. Methacryloxysilane layer; 13. Titanium nitride layer; 14. Thermochromic ink layer; 15. Metal protective layer;

[0022] 2. Backlight module; 3. LCD module; 31. Upper polarizer; 32. Upper substrate; 33. Lower substrate; 34. Lower polarizer; 4. Iron frame; 5. Opaque conductive material. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] This utility model provides a coated cover plate for improving electromagnetic shielding performance, which includes a glass substrate and a magnesium fluoride layer, a methacryloxysilane layer and a titanium nitride layer sequentially stacked on the upper surface of the glass substrate from bottom to top. The thickness of the magnesium fluoride layer is 5nm-10nm, the thickness of the methacryloxysilane layer is 20nm-30nm, and the thickness of the titanium nitride layer is 5nm-10nm.

[0027] The glass substrate, as the base layer of the entire structure, provides the necessary strength and transparency. The magnesium fluoride layer reduces reflection, improves light transmittance and clarity, and also possesses certain chemical stability and hardness. The methacryloxysilane layer enhances the hardness and scratch resistance of the glass substrate, while its high thermal conductivity and potential electromagnetic shielding function add extra performance to the glass substrate. Furthermore, the methacryloxysilane layer can form strong chemical bonds with subsequent layers or substrates through its reactive functional groups. The titanium nitride layer further increases surface hardness and wear resistance, while also providing good corrosion resistance. The layered structure of the cover plate coating layer in this patent is based on the latest research results in materials science. Through a precise coating process, a magnesium fluoride layer, a methacryloxysilane layer, and a titanium nitride layer are sequentially deposited on the surface of the glass substrate to form a high-performance front coating layer. The magnesium fluoride layer, with its excellent light transmittance and low refractive index, reduces light reflection and improves light transmittance and clarity. The methacryloxysilane layer further enhances the cover plate's performance through its high hardness, scratch resistance, and potential electromagnetic shielding function. The titanium nitride layer, as the outermost layer, provides additional hardness and wear resistance, while also exhibiting good corrosion resistance. This enhances the hardness, light transmittance, scratch resistance, and electromagnetic shielding performance of the coated cover plate.

[0028] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. The present invention will be described in detail below with reference to the accompanying drawings and embodiments, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0029] Example 1, please refer to Figure 1 The present invention provides a coated cover plate for improving electromagnetic shielding performance, which includes a glass substrate 1 and a magnesium fluoride layer 11, a methacryloxysilane layer 12 and a titanium nitride layer 13 sequentially stacked on the upper surface of the glass substrate 1 from bottom to top. The thickness of the magnesium fluoride layer 11 is 5nm-10nm, the thickness of the methacryloxysilane layer 12 is 20nm-30nm, and the thickness of the titanium nitride layer 13 is 5nm-10nm. The glass substrate 1, as the base layer of the entire structure, provides the necessary strength and transparency. The magnesium fluoride layer 11 reduces reflection, improves light transmittance and clarity, and also possesses certain chemical stability and hardness. The methacryloxysilane layer 12 enhances the hardness and scratch resistance of the glass substrate 1, while its high thermal conductivity and potential electromagnetic shielding function add additional performance to the glass substrate 1. Furthermore, the methacryloxysilane layer 12 can form strong chemical bonds with subsequent layers or substrates through its reactive functional groups. The titanium nitride layer 13 further increases surface hardness and wear resistance, while also providing good corrosion resistance. The layered structure of the cover plate coating layer in this patent is based on the latest research results in materials science. Through a precise coating process, the magnesium fluoride layer 11, the methacryloxysilane layer 12, and the titanium nitride layer 13 are sequentially deposited on the surface of the glass substrate 1 to form a high-performance front coating layer. The magnesium fluoride layer 11 utilizes its excellent light transmittance and low refractive index to reduce light reflection and improve light transmittance and clarity; the methacryloxysilane layer 12 further enhances the cover plate's performance through its high hardness, scratch resistance, and potential electromagnetic shielding function; the titanium nitride layer 13, as the outermost layer, provides additional hardness and wear resistance, while also exhibiting good corrosion resistance. This improves the hardness, light transmittance, scratch resistance, and electromagnetic shielding performance of the coated cover plate.

[0030] Furthermore, a thermochromic ink layer 14 is provided on the lower surface of the glass substrate 1 located in the non-display area, and the thickness of the thermochromic ink layer 14 is 8μm-10μm. The thermochromic ink layer 14 can change color according to temperature changes, providing a visual temperature indication and increasing the product's interest and practicality.

[0031] Furthermore, a metal protective layer 15 is disposed on the lower surface of the thermochromic ink layer 14, completely covering the thermochromic ink layer 14. The metal protective layer 15 is made of aluminum, and its thickness is 5μm-8μm. As the metal protective layer 15, the aluminum layer possesses good hardness and wear resistance, effectively preventing the thermochromic ink from being scratched or worn, thus protecting the integrity and functionality of the ink layer. Simultaneously, the aluminum layer also provides additional electromagnetic shielding.

[0032] Temperature indication is achieved by using a thermochromic ink layer 14 in the rear bezel area, and an aluminum layer 15 serves as a metal protective layer to effectively prevent scratches or wear on the ink layer, ensuring its functionality and integrity. The overall design not only enhances the physical and optical properties of the glass cover but also increases the product's appeal and practicality, meeting the diverse needs of modern industry for high-performance cover materials.

[0033] Example 2, please refer to Figure 2 The present invention provides a liquid crystal display screen, which includes a backlight module 2, an LCD module 3, and a coated cover plate for improving electromagnetic shielding performance as described in any of the above claims. The LCD module 3 is disposed above the backlight module 2, and the glass substrate 1 is disposed above the LCD module 3.

[0034] Furthermore, the LCD module 3 includes an upper polarizer 31, an upper substrate 32, a lower substrate 33, and a lower polarizer 34 arranged sequentially from top to bottom. The contact surface between the upper polarizer 31 and the upper substrate 32 is provided with PSA adhesive. The backlight module 2 is provided with an iron frame 4, and the iron frame 4 is provided with a contact area. The outer edges of the LCD module 3 and the backlight module 2 are provided with an opaque conductive material 5. One end of the opaque conductive material 5 extends to the iron frame 4 and wraps part of the iron frame 4, and the other end extends to the PSA adhesive and is connected to the PSA adhesive. Because one end of the opaque conductive material 5 extends to the iron frame 4 and partially wraps around it, while the other end extends to the PSA adhesive and connects with it, static electricity in the PSA adhesive of the upper polarizer 31 can be discharged through the grounding area of ​​the iron frame 4. Simultaneously, due to the opaque nature of the opaque conductive material 5, backlight leakage is prevented. It eliminates the need for conductive silver paste, does not corrode the polarizer, and avoids display area defects. Furthermore, it eliminates the need for light-shielding paper; only the opaque conductive material 5 is required, reducing equipment and manufacturing costs and enhancing product competitiveness.

[0035] Furthermore, the material of the opaque conductive material 5 is copper foil or aluminum foil, which is opaque and conductive.

[0036] Furthermore, the other end of the opaque conductive material 5 extends to the glass substrate 1 and beyond it by 0.1mm-0.2mm. This ensures that the IR aperture is also blocked, preventing backlight leakage to the IR aperture.

[0037] 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, an electrical connection, or a connection that allows communication between them; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. A coated cover plate for improving electromagnetic shielding performance, characterized in that, It includes a glass substrate and a magnesium fluoride layer, a methacryloxysilane layer and a titanium nitride layer sequentially stacked on the upper surface of the glass substrate from bottom to top. The thickness of the magnesium fluoride layer is 5nm-10nm, the thickness of the methacryloxysilane layer is 20nm-30nm, and the thickness of the titanium nitride layer is 5nm-10nm.

2. The coated cover plate for improving electromagnetic shielding performance according to claim 1, characterized in that, A thermochromic ink layer is provided on the lower surface of the glass substrate located in the non-display area.

3. The coated cover plate for improving electromagnetic shielding performance according to claim 2, characterized in that, The thickness of the thermochromic ink layer is 8μm-10μm.

4. The coated cover plate for improving electromagnetic shielding performance according to claim 2, characterized in that, A metal protective layer is provided on the lower surface of the thermochromic ink layer, and the metal protective layer completely covers the thermochromic ink layer.

5. The coated cover plate for improving electromagnetic shielding performance according to claim 4, characterized in that, The material of the metal protective layer is aluminum.

6. The coated cover plate for improving electromagnetic shielding performance according to claim 4, characterized in that, The thickness of the metal protective layer is 5μm-8μm.

7. A liquid crystal display screen, characterized in that, It includes a backlight module, an LCD module, and a coated cover plate for improving electromagnetic shielding performance as described in any one of claims 1-6, wherein the LCD module is disposed above the backlight module, and the glass substrate is disposed above the LCD module.

8. The liquid crystal display screen according to claim 7, characterized in that, The LCD module includes an upper polarizer, an upper substrate, a lower substrate, and a lower polarizer arranged sequentially from top to bottom. The contact surface between the upper polarizer and the upper substrate is provided with PSA adhesive. The backlight module is provided with a metal frame, and the metal frame is provided with a contact area. The outer edges of the LCD module and the backlight module are provided with an opaque conductive material. One end of the opaque conductive material extends to the metal frame and partially wraps the metal frame, and the other end of the opaque conductive material extends to the PSA adhesive and is connected to the PSA adhesive.

9. The liquid crystal display screen according to claim 8, characterized in that, The material of the opaque conductive material is copper foil or aluminum foil.

10. The liquid crystal display screen according to claim 8, characterized in that, The other end of the opaque conductive material extends to the glass substrate and exceeds the glass substrate by 0.1mm-0.2mm.

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