Cover plate capable of efficiently absorbing ultraviolet rays

Abstract

The utility model discloses a cover plate of high -efficient absorption ultraviolet, it includes cover plate body and sets up the composite layer on the cover plate body, the composite layer includes by the nanometer zinc oxide layer, nanometer titanium dioxide layer and organic class's benzotriazole derivative layer who sets up in turn sequentially from bottom to top, the thickness of nanometer zinc oxide layer is 4mu -6mu, the thickness of nanometer titanium dioxide layer is 4mu -6mu, the thickness of organic class's benzotriazole derivative layer is 6mu -8mu. It can high -efficient absorption ultraviolet, reduced ultraviolet to the internal structure of wearing equipment caused ageing, damage and so on influence, improved the durability of wearing equipment, while realizing ultraviolet absorption function, guaranteed the basic use performance of wearing cover plate, such as good light transmission, will not because the ultraviolet protection and influence normal use experience, can be applied to various wearing products, and the market prospect is wide. Make the cover plate provide reliable ultraviolet protection under the premise of not influencing the normal use function such as light transmission and display of wearing article.

Description

Technical Field

[0001] This utility model relates to the field of display technology, and more specifically, to a cover plate that can efficiently absorb ultraviolet rays. Background Technology

[0002] With the increasing prevalence of smart products and their growing ubiquitous presence in daily life, smart wearables have become particularly popular in recent years. Smartwatches and fitness trackers come in a wide variety of styles, serving not only as fitness devices but also as accessories.

[0003] Nowadays, people are frequently exposed to ultraviolet (UV) radiation during outdoor activities. While the covers of various wearable devices such as sunglasses, smartwatch screens, and sports goggles offer some protection and display functionality, most current products still fall short in terms of UV protection. Conventional wearable covers have limited UV absorption capabilities and cannot adequately meet the needs of protecting wearable devices from UV damage and reducing UV-induced aging. Traditional wearable covers also fail to provide reliable UV protection without affecting the normal functionality of wearable devices, such as light transmission and display. Utility Model Content

[0004] The technical problem to be solved by this utility model is how to provide reliable ultraviolet protection for the cover plate without affecting the normal use function of wearable products, such as light transmission and display.

[0005] The technical problem to be solved by this utility model is achieved through the following technical solution:

[0006] To solve the above-mentioned technical problems, this utility model provides a cover plate that can efficiently absorb ultraviolet rays, which includes a cover plate body and a composite layer disposed on the cover plate body. The composite layer includes a nano zinc oxide layer, a nano titanium dioxide layer and an organic benzotriazole derivative layer sequentially stacked from bottom to top. The thickness of the nano zinc oxide layer is 4μm-6μm, the thickness of the nano titanium dioxide layer is 4μm-6μm, and the thickness of the organic benzotriazole derivative layer is 6μm-8μm.

[0007] As a preferred embodiment of the cover plate that can efficiently absorb ultraviolet rays provided by this utility model, the nano zinc oxide layer has a nano zinc oxide particle size of 20nm-50nm.

[0008] As a preferred embodiment of the cover plate that can efficiently absorb ultraviolet light provided by this utility model, the nano-titanium dioxide layer has a nano-titanium dioxide particle size of 30nm-80nm.

[0009] In a preferred embodiment of the cover plate that can efficiently absorb ultraviolet rays provided by this utility model, an anti-fall plate is provided on the top of the cover plate body, and an ink layer is provided on the lower surface of the anti-fall plate located in the non-visible area. The cover plate body and the anti-fall plate are fixed together by an adhesive layer, and the adhesive layer completely covers the ink layer and the lower surface of the anti-fall plate.

[0010] In a preferred embodiment of the cover plate that can efficiently absorb ultraviolet light provided by this utility model, the thickness of the ink layer is 8μm to 15μm.

[0011] In a preferred embodiment of the cover plate that can efficiently absorb ultraviolet rays provided by this utility model, the thickness of the adhesive layer is 50 μm.

[0012] In a preferred embodiment of the cover plate that can efficiently absorb ultraviolet rays provided by this utility model, the thickness of the anti-fall plate is 5mm to 10mm, and the thickness of the cover plate body is 3mm to 5mm.

[0013] As a preferred embodiment of the cover plate that can efficiently absorb ultraviolet rays provided by this utility model, the upper surface of the anti-fall plate is covered with an anti-fingerprint film layer.

[0014] As a preferred embodiment of the cover plate that can efficiently absorb ultraviolet rays provided by this utility model, a color-changing layer is provided on the upper surface of the anti-fingerprint film layer located in the non-display area.

[0015] In a preferred embodiment of the cover plate that can efficiently absorb ultraviolet rays provided by this utility model, the hardness of the anti-fall plate is greater than the hardness of the cover plate body.

[0016] This utility model has the following beneficial effects:

[0017] An organic composite layer containing a UV absorber is prepared. The UV absorber is selected from the following types of specially treated substances.

[0018] Nano-zinc oxide undergoes surface modification using a silane coupling agent. Its principle of UV absorption lies in the unique electronic structure of nanoscale zinc oxide. When irradiated with UV light, valence band electrons are excited and transition to the conduction band, generating electron-hole pairs, which convert the UV light energy into other forms of energy, thus achieving UV absorption. Furthermore, surface modification not only improves its dispersibility in the organic resin matrix but also avoids the adverse effects of its own photocatalytic activity, such as the decomposition of the wearable cover plate substrate material.

[0019] The anatase nano-titanium dioxide is also surface-modified, for example, by coating it with organic ligands. The anatase structure has a suitable band gap, allowing electrons to transition from the valence band to the conduction band under ultraviolet irradiation, absorbing ultraviolet photon energy and achieving the effect of ultraviolet absorption. Surface coating treatment allows for better dispersion in the resin and prevents damage to surrounding materials caused by free radicals generated by photocatalysis.

[0020] Organic benzotriazole derivatives contain functional groups in their molecular structure that can interact with ultraviolet photons. Their mechanism of action involves intramolecular electron transfer and energy conversion. Under ultraviolet light, the electron cloud within the molecule rearranges, absorbing the energy of the ultraviolet light and thus achieving effective absorption. They possess good solubility and compatibility with organic resins, facilitating uniform dispersion in coating systems.

[0021] The above materials are stacked sequentially on a cover plate substrate to form an ultraviolet-absorbing coating. This coating can effectively absorb ultraviolet rays of different wavelengths (UVA, UVB), for example, the absorption rate of UVA can reach more than 85%, and the absorption rate of UVB can reach more than 90%.

[0022] It can efficiently absorb ultraviolet (UV) rays, significantly reducing UV radiation and minimizing the aging and damage caused by UV rays to the internal structure of wearable devices, thus improving their durability. Its implementation is flexible, allowing for adaptation to different types and materials of wearable covers through relatively simple coating processes, making it widely applicable. While achieving UV absorption, it ensures the basic performance of the wearable cover, such as good light transmittance, so that normal user experience is not affected by UV protection. It can be applied to a variety of wearable products, with a broad market prospect. This allows the cover to provide reliable UV protection without affecting the normal functionality of wearable products, such as light transmission and display. Attached Figure Description

[0023] 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.

[0024] Figure 1 This is a schematic diagram of the structure of a cover plate that can efficiently absorb ultraviolet rays, provided by this utility model.

[0025] Figure 2 This is a schematic diagram of the structure of Example 2.

[0026] Explanation of icon numbers:

[0027] Cover plate body 1; nano zinc oxide layer 11; nano titanium dioxide layer 12; organic benzotriazole derivative layer 13;

[0028] 2. Shockproof plate; 21. Ink layer; 22. Adhesive layer. Detailed Implementation

[0029] 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.

[0030] 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.

[0031] 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.

[0032] This invention provides a cover plate that can efficiently absorb ultraviolet light, comprising a cover plate body and a composite layer disposed on the cover plate body. The composite layer comprises a nano zinc oxide layer, a nano titanium dioxide layer and an organic benzotriazole derivative layer sequentially stacked from bottom to top. The thickness of the nano zinc oxide layer is 4μm-6μm, the thickness of the nano titanium dioxide layer is 4μm-6μm, and the thickness of the organic benzotriazole derivative layer is 6μm-8μm.

[0033] An organic composite layer containing a UV absorber is prepared. The UV absorber is selected from the following types of specially treated substances.

[0034] Nano-zinc oxide undergoes surface modification using a silane coupling agent. Its principle of UV absorption lies in the unique electronic structure of nanoscale zinc oxide. When irradiated with UV light, valence band electrons are excited and transition to the conduction band, generating electron-hole pairs, which convert the UV light energy into other forms of energy, thus achieving UV absorption. Furthermore, surface modification not only improves its dispersibility in the organic resin matrix but also avoids the adverse effects of its own photocatalytic activity, such as the decomposition of the wearable cover plate substrate material.

[0035] The anatase nano-titanium dioxide is also surface-modified, for example, by coating it with organic ligands. The anatase structure has a suitable band gap, allowing electrons to transition from the valence band to the conduction band under ultraviolet irradiation, absorbing ultraviolet photon energy and achieving the effect of ultraviolet absorption. Surface coating treatment allows for better dispersion in the resin and prevents damage to surrounding materials caused by free radicals generated by photocatalysis.

[0036] Organic benzotriazole derivatives contain functional groups in their molecular structure that can interact with ultraviolet photons. Their mechanism of action involves intramolecular electron transfer and energy conversion. Under ultraviolet light, the electron cloud within the molecule rearranges, absorbing the energy of the ultraviolet light and thus achieving effective absorption. They possess good solubility and compatibility with organic resins, facilitating uniform dispersion in coating systems.

[0037] The above materials are stacked sequentially on a cover plate substrate to form an ultraviolet-absorbing coating. This coating can effectively absorb ultraviolet rays of different wavelengths (UVA, UVB), for example, the absorption rate of UVA can reach more than 85%, and the absorption rate of UVB can reach more than 90%.

[0038] It can efficiently absorb ultraviolet (UV) rays, significantly reducing UV radiation and minimizing the aging and damage caused by UV rays to the internal structure of wearable devices, thus improving their durability. Its implementation is flexible, allowing for adaptation to different types and materials of wearable covers through relatively simple coating processes, making it widely applicable. While achieving UV absorption, it ensures the basic performance of the wearable cover, such as good light transmittance, so that normal user experience is not affected by UV protection. It can be applied to a variety of wearable products, with a broad market prospect. This allows the cover to provide reliable UV protection without affecting the normal functionality of wearable products, such as light transmission and display.

[0039] 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.

[0040] Example 1, please refer to Figure 1 The present invention provides a cover plate that can efficiently absorb ultraviolet rays, which includes a cover plate body 1 and a composite layer disposed on the cover plate body 1. The composite layer includes a nano zinc oxide layer 11, a nano titanium dioxide layer 12 and an organic benzotriazole derivative layer 13, which are sequentially stacked from bottom to top. The thickness of the nano zinc oxide layer 11 is 4μm-6μm, the thickness of the nano titanium dioxide layer 12 is 4μm-6μm, and the thickness of the organic benzotriazole derivative layer 13 is 6μm-8μm.

[0041] The composite layer can be set on the upper surface of the cover plate body 1 or on the lower surface of the cover plate body 1.

[0042] An organic composite layer containing a UV absorber is prepared. The UV absorber is selected from the following types of specially treated substances.

[0043] The nano-zinc oxide layer 11 undergoes surface modification treatment with a silane coupling agent. Its principle of absorbing ultraviolet light lies in the unique electronic structure of nanoscale zinc oxide. When irradiated by ultraviolet light, valence band electrons are excited and transition to the conduction band, generating electron-hole pairs, thereby converting the light energy of ultraviolet light into other forms of energy, achieving the absorption of ultraviolet light. Furthermore, surface modification not only improves its dispersibility in the organic resin matrix but also avoids the adverse effects of its own photocatalytic activity, such as the decomposition of the wearable cover plate substrate material.

[0044] The anatase nano-titanium dioxide layer 12 also undergoes surface modification, such as surface coating with organic ligands. The anatase structure has a suitable band gap, allowing electrons to transition from the valence band to the conduction band under ultraviolet irradiation, absorbing ultraviolet photon energy and achieving ultraviolet absorption. Surface coating treatment allows for better dispersion in the resin and prevents damage to surrounding materials caused by free radicals generated by photocatalysis.

[0045] Organic benzotriazole derivatives (layer 13) contain functional groups in their molecular structure that can interact with ultraviolet photons. Their mechanism of action involves intramolecular electron transfer and energy conversion. Under ultraviolet light, the electron cloud in the molecule rearranges, absorbing the energy of the ultraviolet light and thus achieving effective absorption. They possess good solubility and compatibility with organic resins, facilitating uniform dispersion in coating systems.

[0046] The above materials are stacked sequentially on a cover plate substrate to form an ultraviolet-absorbing coating. This coating can effectively absorb ultraviolet rays of different wavelengths (UVA, UVB), for example, the absorption rate of UVA can reach more than 85%, and the absorption rate of UVB can reach more than 90%.

[0047] It can efficiently absorb ultraviolet (UV) rays, significantly reducing UV radiation and minimizing the aging and damage caused by UV rays to the internal structure of wearable devices, thus improving their durability. Its implementation is flexible, allowing for adaptation to different types and materials of wearable covers through relatively simple coating processes, making it widely applicable. While achieving UV absorption, it ensures the basic performance of the wearable cover, such as good light transmittance, so that normal user experience is not affected by UV protection. It can be applied to a variety of wearable products, with a broad market prospect. This allows the cover to provide reliable UV protection without affecting the normal functionality of wearable products, such as light transmission and display.

[0048] It can protect the internal components of wearable devices, extend the lifespan of wearable devices, and ensure that the basic functions of wearable products are not affected. The cover body 1 can be made of glass or polymer materials such as polycarbonate or acrylic, and the cover body 1 has the strength, toughness and basic light transmittance requirements to meet the wearable use scenarios.

[0049] The organic benzotriazole derivative layer 13 is 2-(2'-hydroxy-5'-methylphenyl)benzotriazole.

[0050] Furthermore, the nano zinc oxide layer 11 has a nano zinc oxide particle size of 20nm-50nm, and the nano titanium dioxide layer 12 has a nano titanium dioxide particle size of 30nm-80nm.

[0051] Example 2, please refer to Figure 2As a further optimization of Embodiment 1, in this embodiment, a drop protection plate 2 is provided above the cover plate body 1. An ink layer 21 is provided on the lower surface of the drop protection plate 2 located in the non-visible area. The cover plate body 1 and the drop protection plate 2 are fixed together by an adhesive layer 22, which completely covers the ink layer 21 and the lower surface of the drop protection plate 2. Since there is another drop protection plate 2 above the cover plate body 1, and the adhesive layer 22 is printed on the back of the drop protection plate 2, it covers the ink layer 21 in the non-visible area and the lower surface of the drop protection plate 2 in the visible area, filling in the ink step difference and preventing the occurrence of bonding bubbles and edge yellow spots. The cover plate body 1 can be fully bonded to the upper polarizer with optical adhesive. Since the cover plate body 1 does not have an ink layer 21, bonding bubbles and edge yellow spots will not occur, thereby avoiding display abnormalities of the liquid crystal display module. This reduces the probability of defective liquid crystal display modules and significantly reduces the production and manufacturing costs of liquid crystal display modules.

[0052] Furthermore, when the anti-drop plate 2 is subjected to external impact, the anti-drop plate 2 will break first. Due to the buffering effect of the adhesive layer 22, the cover plate body 1 is not easily broken. Therefore, it can effectively protect the cover plate body 1 and the main screen. When the anti-drop plate 2 breaks, it can be easily peeled off. Only a new anti-drop plate 2 needs to be replaced. It is not necessary to replace the entire LCD display module, which greatly reduces the maintenance cost of the LCD display module and improves the product competitiveness of the LCD display module, thereby meeting the growing quality requirements of enterprises.

[0053] Furthermore, the thickness of the ink layer 21 is 8 μm to 15 μm.

[0054] Furthermore, the thickness of the adhesive layer 22 is 50 μm.

[0055] Furthermore, the thickness of the anti-fall plate 2 is 5mm to 10mm, and the thickness of the cover plate body 1 is 3mm to 5mm.

[0056] Furthermore, the upper surface of the drop shield 2 is covered with an anti-fingerprint film to prevent users' fingerprints from remaining on the drop shield 2 and to enhance its aesthetics.

[0057] Furthermore, a color-changing layer is provided on the upper surface of the anti-fingerprint film layer located in the non-display area to further enhance the product's aesthetics.

[0058] Furthermore, the hardness of the anti-fall plate 2 is greater than that of the cover plate body 1 to enhance the protective effect.

[0059] 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.

[0060] 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 cover plate capable of efficiently absorbing ultraviolet rays, characterized by comprising: It includes a cover plate body and a composite layer disposed on the cover plate body. The composite layer includes a nano zinc oxide layer, a nano titanium dioxide layer and an organic benzotriazole derivative layer, which are sequentially stacked from bottom to top. The thickness of the nano zinc oxide layer is 4μm-6μm, the thickness of the nano titanium dioxide layer is 4μm-6μm, and the thickness of the organic benzotriazole derivative layer is 6μm-8μm.

2. The ultraviolet-absorbing cover sheet according to claim 1, wherein The nano-zinc oxide layer has a particle size of 20nm-50nm.

3. The cover plate capable of efficiently absorbing ultraviolet rays according to claim 1, characterized in that, The nano-titanium dioxide layer has a particle size of 30nm-80nm.

4. The cover plate capable of efficiently absorbing ultraviolet rays according to claim 1, characterized in that, A drop protection plate is provided on the top of the cover plate body. An ink layer is provided on the lower surface of the drop protection plate located in the non-visible area. The cover plate body and the drop protection plate are fixed together by an adhesive layer, which completely covers the ink layer and the lower surface of the drop protection plate.

5. The cover plate capable of efficiently absorbing ultraviolet rays according to claim 4, characterized in that, The thickness of the ink layer is 8 μm to 15 μm.

6. The cover plate capable of efficiently absorbing ultraviolet rays according to claim 4, characterized in that, The thickness of the adhesive layer is 50 μm.

7. The cover plate capable of efficiently absorbing ultraviolet rays according to claim 4, characterized in that, The thickness of the anti-fall plate is 5mm to 10mm, and the thickness of the cover plate body is 3mm to 5mm.

8. The cover plate capable of efficiently absorbing ultraviolet rays according to claim 4, characterized in that, The upper surface of the shockproof plate is covered with an anti-fingerprint film.

9. The cover plate capable of efficiently absorbing ultraviolet rays according to claim 8, characterized in that, A color-changing layer is provided on the upper surface of the anti-fingerprint film layer located in the non-display area.

10. The cover plate capable of efficiently absorbing ultraviolet rays according to claim 4, characterized in that, The hardness of the anti-fall plate is greater than the hardness of the cover plate body.

Images