Cover plate and electronic device

Abstract

The utility model relates to electronic equipment cover plate technical field, concretely relates to a cover plate and electronic equipment. The utility model discloses a cover plate, include: transparent glass fiber layer has first surface, inside function layer is located first surface, inside function includes the laminated setting of night light ink layer and cover bottom ink layer, night light ink layer is close to transparent glass fiber layer. The utility model discloses a cover plate selects transparent glass fiber layer as base material, and it can make the cover plate have good permeability effect, and the night light ink layer containing above-mentioned cover plate can have good night light visual effect at night.

Description

Technical Field

[0001] This utility model relates to the field of electronic device cover technology, specifically to a cover and an electronic device. Background Technology

[0002] Electronic devices such as computers and mobile phones have become increasingly common as people's living standards continue to improve. Electronic devices mainly consist of a layered touchscreen, display screen, and back cover. As the outermost component of an electronic device, the back cover, in addition to providing physical protection such as drop resistance and abrasion resistance, can also enhance the user experience through its appearance design, such as texture, color, and gloss, satisfying people's pursuit of fashion and individuality, thereby improving the product competitiveness of electronic devices.

[0003] Currently, fiberglass composite back covers are widely used in electronic devices such as mobile phones and tablets, mainly in two types: One type uses non-transparent fiberglass as the base material, combined with a multi-layer spray coating process, achieving appearance texture, color, and protective performance through functional coatings. The other type involves laminating a vegan leather material onto the surface of the fiberglass composite, leveraging the skin-friendly texture and diverse surface effects of the vegan leather to enhance product differentiation. However, traditional fiberglass composite back covers lack transparency and do not provide a good visual experience at night. Utility Model Content

[0004] Based on this, the present invention provides a cover plate and an electronic device. The cover plate of the present invention uses a transparent fiberglass layer as the substrate, which enables the cover plate to have good transparency; and the luminescent ink layer contained in the cover plate can provide good luminescent visual effect at night.

[0005] A first aspect of this utility model provides a cover plate, comprising:

[0006] A transparent fiberglass layer having a first surface;

[0007] An inner functional layer is disposed on the first surface; the inner function includes a luminescent ink layer and a cover ink layer stacked together, the luminescent ink layer being close to the transparent glass fiber layer.

[0008] In one embodiment, the transparent fiberglass layer further has a second surface disposed opposite to the first surface, and the cover plate further includes an outer functional layer disposed on the second surface.

[0009] In one embodiment, the outer functional layer includes a varnish underlayer and a hardening layer stacked together; the varnish underlayer is close to the transparent fiberglass layer.

[0010] In one embodiment, the light transmittance of the transparent fiberglass layer is 85% to 90%, the haze of the transparent fiberglass layer is greater than 13% and less than or equal to 50%, and the gloss of the hardened layer is 10 GU to 45 GU.

[0011] In another embodiment, the light transmittance of the transparent fiberglass layer is 85% to 90%, the haze of the transparent fiberglass layer is 2% to 13%, and the gloss of the hardened layer is greater than or equal to 70 GU.

[0012] In yet another embodiment, the light transmittance of the transparent fiberglass layer is 85% to 90%, the haze of the transparent fiberglass layer is 2% to 13%, and the gloss of the hardened layer is 10 GU to 45 GU.

[0013] In one embodiment, a second pattern layer is further formed on the second surface of the transparent fiberglass layer; the second pattern layer is disposed between the transparent fiberglass layer and the outer functional layer.

[0014] In one embodiment, the hardness of the surface of the hardened layer away from the transparent fiberglass layer is 2H to 5H.

[0015] In one embodiment, the thickness of the varnish undercoat is 3 μm to 15 μm.

[0016] In one embodiment, the varnish undercoat includes at least one of an acrylic resin layer and a polyurethane resin layer.

[0017] In one embodiment, the inner functional layer further includes a textured layer and a coating layer stacked together, the coating layer being close to the luminescent ink layer.

[0018] In one embodiment, a first pattern layer is further formed on the first surface of the transparent fiberglass layer; the first pattern layer is disposed between the transparent fiberglass layer and the inner functional layer.

[0019] In one embodiment, the thickness of the texture layer is 9 μm to 15 μm.

[0020] In one embodiment, the thickness of the coating layer is 200 nm to 700 nm.

[0021] In one embodiment, the color reflectance of the coating layer is not less than 30%.

[0022] In one embodiment, the thickness of the luminescent ink layer is 10 μm to 20 μm.

[0023] In one embodiment, the luminescent ink layer includes at least one of a rare earth aluminate layer and a rare earth silicate layer. In one embodiment, the inner functional layer further includes a color layer disposed between the luminescent ink layer and the cover ink layer.

[0024] In one embodiment, the thickness of the transparent fiberglass layer is 0.3 mm to 0.8 mm.

[0025] In one embodiment, the flexural strength of the transparent fiberglass layer is 400 MPa to 600 MPa.

[0026] In one embodiment, the flexural modulus of the transparent fiberglass layer is 17GP to 28GP.

[0027] A second aspect of this invention provides an electronic device including the cover plate described in any embodiment of the first aspect of this invention.

[0028] The cover plate of this utility model has at least the following beneficial effects:

[0029] In the cover plate provided by this utility model, the transparent fiberglass layer serves as the basic structure. Its light-transmitting properties allow light to pass through unimpeded, thus ensuring the overall transparent visual experience of the cover plate. Furthermore, during the day, light can penetrate through the transparent fiberglass layer to the luminescent ink layer, allowing the luminescent ink layer to absorb and store ambient light energy. In a dark environment, the luminescent ink layer slowly releases the stored energy in the form of visible light, creating a noticeable luminescent effect. Simultaneously, the bottom ink layer protects the luminescent ink layer and assists in color development. These three elements work together to enable the cover plate to exhibit excellent luminescence at night.

[0030] Furthermore, this application specifically applies different gloss levels of hardening layers to transparent fiberglass layers with high light transmittance and high haze, and high light transmittance but low haze, respectively. Specifically, the high-haze transparent fiberglass layer, in conjunction with the low-gloss matte hardening layer, achieves a softer, more aesthetically pleasing finish by softening the light on the matte surface. The matte hardening layer also conceals the inherent dark patterns of the transparent fiberglass layer and, together with the texture layer and coating layer, further enhances the texture's layering and three-dimensionality, creating a unique light and shadow effect. The matte hardening layer also possesses a frosted glass-like tactile feel. Conversely, the low-haze transparent fiberglass layer, in conjunction with the high-gloss hardening layer, leverages its high reflectivity and smoothness to significantly reduce diffuse reflection loss of light on the cover surface, allowing more light to penetrate and further enhancing light transmission, thereby significantly improving the cover's transparency. Furthermore, the low-haze transparent fiberglass layer can work in conjunction with the low-gloss matte hardened layer, which, with its low reflectivity and moderate smoothness, can reduce glare. At the same time, the low-haze transparent fiberglass layer can reduce the scattering loss when light passes through, allowing light to diffuse softly while maintaining high light transmission efficiency, thereby improving the visual comfort and light transmission uniformity of the cover in different lighting environments.

[0031] Furthermore, this application may also include a texture layer and a coating layer. Transparent fiberglass with light transmittance ensures that light can fully penetrate and be projected onto the texture layer and the coating layer. When light shines on it, the texture structure of the texture layer can form unique light and shadow changes, thereby showing a three-dimensional and layered texture; at the same time, the coating layer can enhance the color saturation and gloss of the texture. The two work together to allow the cover to also present a rich and diverse texture structure during the day. Attached Figure Description

[0032] Figure 1 A schematic diagram of the structure of the cover plate provided by this utility model;

[0033] Figure 2 This is a schematic diagram of the structure of a cover plate provided in another example of the present utility model;

[0034] Figure 3 A schematic diagram of the structure of the cover plate provided in yet another example of this utility model;

[0035] Figure 4 A schematic diagram of the structure of the cover plate provided by this utility model;

[0036] Figure 5 A schematic diagram of the structure of the cover plate provided as another example of this utility model;

[0037] Figure 6 A schematic diagram of the structure of the cover plate provided as another example of this utility model;

[0038] Figure 7 A schematic diagram of the structure of the cover plate provided as another example of this utility model;

[0039] Figure 8 A schematic diagram of the structure of the cover plate provided as another example of this utility model;

[0040] Figure 9 A schematic diagram of the cover plate provided as another example of this utility model.

[0041] Explanation of reference numerals in the attached figures

[0042] 10. Cover plate; 100. Transparent fiberglass layer; 111. First surface; 112. Second surface; 200. Inner functional layer; 210. Luminous ink layer; 220. Cover and base ink layer; 230. Texture layer; 240. Coating layer; 250. Color layer; 300. Outer functional layer; 310. Clear varnish base coat; 320. Hardening layer; 410. First pattern layer; 420. Second pattern layer. Detailed Implementation

[0043] The cover plate and electronic device of this utility model will be further described in detail below with reference to specific embodiments. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0045] In this article, "one or more" refers to any one, two or more of the listed items.

[0046] In this utility model, terms such as "first aspect," "second aspect," "third aspect," "fourth aspect," and "fifth aspect" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or quantity, nor should they be construed as implicitly indicating the importance or quantity of the indicated technical features. Moreover, terms such as "first," "second," "third," "fourth," and "fifth" serve only as a non-exhaustive enumeration and should be understood not to constitute a closed limitation on the quantity.

[0047] In this utility model, the technical features described in an open-ended manner include both closed technical solutions composed of the listed features and open technical solutions that include the listed features.

[0048] In this invention, numerical ranges are involved. Unless otherwise specified, the numerical ranges are considered continuous and include the minimum and maximum values ​​of the range, as well as every value between the minimum and maximum values. Furthermore, when the range refers to integers, it includes every integer between the minimum and maximum values ​​of the range. Additionally, when multiple ranges are provided to describe a feature or characteristic, the ranges may be merged. In other words, unless otherwise specified, all ranges disclosed herein should be understood to include any and all subranges to which they are incorporated.

[0049] In the two traditional methods of constructing back covers for fiberglass composite electronic devices, back covers using non-transparent fiberglass as the base material and employing a multi-layer spray coating process can achieve aesthetic texture, color, and protective performance through functional coatings. However, due to the non-transparent base material, they cannot exhibit a transparent feel. Back covers with a leather-like material laminated onto the fiberglass composite surface, while offering a skin-friendly texture, also lack transparency. Furthermore, neither of these traditional solutions is designed for nighttime visual effects, resulting in a poor visual experience for users in dark environments, making it difficult to present a clear and aesthetically pleasing appearance.

[0050] Based on this, see Figure 1 In a first aspect of this embodiment, a cover plate 10 is provided, comprising: a transparent fiberglass layer 100 and an inner functional layer 200.

[0051] The transparent fiberglass layer 100 has a first surface 111. An inner functional layer 200 is disposed on the first surface 111; the inner function includes a luminescent ink layer 210 and a cover ink layer 220 stacked together. The luminescent ink layer 210 is close to the transparent fiberglass layer 100.

[0052] The transparent fiberglass layer 100 serves as the base structure of the substrate, and its light transmittance allows light to pass through unimpeded, thus ensuring the overall transparent visual experience of the cover plate 10. Furthermore, during the day, light can penetrate through the transparent fiberglass layer 100 to the luminescent ink layer 210, allowing the luminescent ink layer 210 to absorb and store ambient light energy. In dark environments, the luminescent ink layer 210 slowly releases the stored energy in the form of visible light, creating a noticeable luminescent effect. Simultaneously, the bottom ink layer 220 protects the luminescent ink layer 210 and assists in color development. These three elements work together to ensure that the cover plate 10 exhibits excellent luminescence at night.

[0053] In some examples, the transparent fiberglass layer 100 is a thermosetting fiberglass material layer formed by hot-pressing fiberglass fabric and epoxy resin. As the matrix structure of the cover plate 10, the transparent fiberglass layer 100 combines the advantages of high light transmittance, lightweight, and excellent drop resistance, giving the cover plate 10 good visual transparency while maintaining lightweight and durability. Furthermore, the refractive indices of the hot-pressed fiberglass fabric and epoxy resin are similar. For example, the refractive index difference between the hot-pressed fiberglass fabric and epoxy resin is ±0.1. As another example, the fiberglass fabric is one of woven fabric, knitted fabric, and combed fabric.

[0054] In some examples, the thickness of the transparent fiberglass layer 100 is between 0.3 mm and 0.8 mm. For example, the thickness of the transparent fiberglass layer 100 includes, but is not limited to, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, or 0.8 mm, or any two of the above values ​​as endpoints. A thickness of 0.3 mm to 0.8 mm for the transparent fiberglass layer 100 ensures that the cover plate 10 has good light transmittance, excellent strength, and durability.

[0055] In some examples, the flexural strength of the transparent fiberglass layer 100 is between 400 MPa and 600 MPa. For example, the flexural strength of the transparent fiberglass layer 100 includes, but is not limited to, 400 MPa, 450 MPa, 500 MPa, 550 MPa or 600 MPa, or any two of the above point values ​​as endpoint values.

[0056] In some of these examples, the flexural modulus of the transparent fiberglass layer 100 is between 17 GP and 28 GP. For example, the flexural modulus of the transparent fiberglass layer 100 includes, but is not limited to, 17 GP, 19 GP, 20 GP, 22 GP, 25 GP, or 28 GP, or any two of the above point values ​​as endpoint values.

[0057] The flexural modulus and flexural strength of the transparent fiberglass layer 100 are within the above range, which enables the cover plate 10 to be thin and light while being able to withstand the bending stress in daily use, thereby improving the durability of the cover plate 10.

[0058] In some of these examples, the light transmittance of the transparent fiberglass layer 100 is between 85% and 90%. For example, the light transmittance of the transparent fiberglass layer 100 includes, but is not limited to, 85%, 86%, 88%, or 90%, or any two of the above point values ​​as endpoints.

[0059] In some of these examples, the haze of the transparent fiberglass layer 100 is between 2% and 50%. For example, the haze of the transparent fiberglass layer 100 includes, but is not limited to, 2%, 5%, 8%, 10%, 13%, 15%, 18%, 20%, 25%, 30%, 35%, 40%, 45%, or 50%, or any two of the above point values ​​as endpoint values.

[0060] Generally, the transparent fiberglass layer 100 has high light transmittance, but it is difficult to achieve low haze. In the cover plate 10 structure provided in this embodiment, it mainly utilizes the light transmittance of the transparent fiberglass layer 100 to allow the luminous ink layer 210 to fully absorb light and store light energy under illumination. When in a dark environment, the luminous ink layer 210 can release the stored energy in the form of visible light, presenting a soft and long-lasting luminous effect. Therefore, the cover plate 10 provided in this embodiment broadens the application scenarios of the transparent fiberglass layer 100.

[0061] In some examples, the thickness of the luminescent ink layer 210 is from 10 μm to 20 μm. For example, the thickness of the luminescent ink layer 210 includes, but is not limited to, 10 μm, 12 μm, 14 μm, 16 μm, 18 μm or 20 μm, or any two of the above point values ​​as endpoint values.

[0062] In some examples, the luminescent ink layer 210 includes at least one of a rare-earth aluminate layer and a rare-earth silicate layer. Understandably, rare-earth aluminates and rare-earth silicates are long-afterglow materials formed by doping rare-earth ions onto aluminate and silicate matrices, respectively, and possess the property of continuously emitting light in the dark after absorbing light energy. For example, the types of rare-earth aluminates include, but are not limited to, SrAl₂O₄:Eu. 2+ SrAl2O4:Eu 2+ ,Dy 3+ SrAl2O4:Eu 2+ ,Nd 3+ 、SrAl 2 O 4 Eu 2+ ,Dy 3+ ,Nd 3+ Sr4Al 14 O2: Eu 2+ Sr4Al 14 O2: Eu 2+ ,Dy 3+ and Ca2Al2O4:Eu 2+ ,Dy 3+ At least one of the following. In another embodiment, the rare earth silicate includes Sr2MgSi2O7:Eu 2+ ,Dy 3+ Sr2MgSi2O7:Eu 2+,Dy 3+ ,Nd 3+ and Sr2ZnSi2O7:Eu 2 + ,Dy 3+ At least one of them.

[0063] The aforementioned luminescent ink layer 210 has high light absorption efficiency, enabling it to quickly store energy under common light sources such as natural light and artificial light, and continuously release soft light in dark environments. Furthermore, the luminescent ink layer 210 has a long luminescence duration; after a single full absorption of light, it can maintain its luminescent effect for several hours, meeting the needs for long-term visibility at night. In addition, it exhibits good synergy with other functional layers such as the texture layer 230 and the pattern layer, effectively enriching the luminescent visual effect of the cover plate 10, making it suitable for scenarios such as electronic device cover plates 10 where high optical performance and durability are required.

[0064] In some of these examples, the luminescent ink layer 210 is obtained by screen printing.

[0065] In some examples, the thickness of the undercoat ink layer 220 is 20 μm to 36 μm. The undercoat ink layer 220 can be obtained by one or more screen printing operations. The undercoat ink layer 220 can significantly improve opacity, enhance color saturation, make the colors of the printed pattern on the surface more vivid and bright, and optimize the visual presentation effect in conjunction with the luminescent ink layer 210.

[0066] See Figure 2 In some of these examples, the transparent fiberglass layer 100 also has a second surface 112 disposed opposite to the first surface 111, and the cover plate 10 also includes an outer functional layer 300 disposed on the second surface 112.

[0067] In some examples, the outer functional layer 300 includes a varnish base layer 310 and a hardening layer 320 stacked together. The varnish base layer 310 is adjacent to the transparent fiberglass layer 100.

[0068] In some examples, the thickness of the varnish base coat 310 is from 3 μm to 15 μm. For example, the thickness of the varnish base coat 310 includes, but is not limited to, 3 µm, 5 µm, 8 µm, 10 µm, 12 µm, or 15 µm, or any two of the above values ​​as endpoints. Limiting the thickness of the varnish base coat 310 to the above range enhances its adhesion to the transparent fiberglass layer 100 and also serves as a medium interlayer, ensuring a strong bond between the hardened layer 320 and the transparent fiberglass layer 100.

[0069] In some examples, the varnish base coat 310 includes at least one of an acrylic resin layer and a polyurethane resin layer. The varnish base coat 310 is selected from an acrylic resin layer or a polyurethane resin layer, which has excellent adhesion, weather resistance and flexibility, and can be tightly bonded to the transparent fiberglass layer 100 and the hardening layer 320 without cracking.

[0070] In some examples, the hardness of the surface of the hardened layer 320 away from the transparent fiberglass layer 100 is 2H to 5H. The hardness of the surface of the hardened layer 320 away from the transparent fiberglass layer 100 includes, but is not limited to, 2H, 3H, 4H, or 5H, or any two of these values ​​as endpoints. A hardness of 2H to 5H on the surface of the hardened layer 320 away from the transparent fiberglass layer 100 ensures good scratch and abrasion resistance on the surface of the cover plate 10, while also providing adequate toughness to withstand minor impacts during daily use.

[0071] In one example, the thickness of the hardened layer 320 is from 10µm to 40µm. For example, the thickness of the hardened layer 320 includes, but is not limited to, 10µm, 15µm, 20µm, 25µm, 30µm, 35µm or 40µm, or any two of the above point values ​​as endpoint values.

[0072] To adapt and optimize the transparent fiberglass layer 100 with different haze levels and fully utilize its characteristics, this embodiment employs different settings for the hardened layer 320. The synergy between the high-haze transparent fiberglass layer 100 and the low-gloss matte hardened layer 320 weakens reflections and simulates the feel of glass. The synergy between the low-haze transparent fiberglass layer 100 and the high-gloss high-gloss hardened layer 320 further enhances transparency. The synergy between the low-haze transparent fiberglass layer 100 and the low-gloss matte hardened layer 320 maintains high light transmittance while ensuring soft light diffusion.

[0073] In some examples, the light transmittance of the transparent fiberglass layer 100 is 85% to 90%, and the haze of the transparent fiberglass layer 100 is greater than 13% and less than or equal to 50%; the gloss of the hardened layer 320 is 10 GU to 45 GU. In this example, the light transmittance of the transparent fiberglass layer 100 includes, but is not limited to, 85%, 86%, 88%, 89%, or 90%, or any two of the above values ​​as endpoints. The haze of the transparent fiberglass layer 100 includes, but is not limited to, 13%, 20%, 30%, 40%, or 50%, or any two of the above values ​​as endpoints. The gloss of the hardened layer 320 includes, but is not limited to, 10 GU, 15 GU, 20 GU, 25 GU, 30 GU, 35 GU, 40 GU, or 45 GU, or any two of the above values ​​as endpoints.

[0074] When the gloss level of the hardened layer 320 is between 10 GU and 45 GU, the surface of the hardened layer 320 is matte. At this time, the high-haze transparent fiberglass layer 100, in conjunction with the low-gloss matte hardened layer 320, softens the light, giving the cover plate 10 a gentle aesthetic. Furthermore, the matte hardened layer 320 can cover the inherent dark patterns of the transparent fiberglass layer 100, and, together with the texture layer 230 and the coating layer 240, further enhances the layering and three-dimensionality of the texture, thereby creating a unique light and shadow effect. Understandably, in this embodiment, the gloss level of the hardened layer 320 is measured using a gloss meter under standard test conditions of a 60° incident angle, measuring the specular reflection intensity of the surface of the hardened layer 320. A value between 10 GU and 45 GU indicates a matte finish.

[0075] In another embodiment, the transparent fiberglass layer 100 has a light transmittance of 85% to 90% and a haze of 2% to 13%; the hardened layer 320 has a gloss level greater than or equal to 70 GU. In this example, the light transmittance of the transparent fiberglass layer 100 includes, but is not limited to, 85%, 86%, 88%, 89%, or 90%, or any two of the above values ​​as endpoints. The haze of the transparent fiberglass layer 100 includes, but is not limited to, 2%, 5%, 10%, or 13%, or any two of the above values ​​as endpoints. The gloss level of the hardened layer 320 includes, but is not limited to, 70 GU, 80 GU, 90 GU, or 100 GU, or any two of the above values ​​as endpoints. Further, in this example, the gloss level of the hardened layer 320 is 70 GU to 100 GU.

[0076] In this example, the gloss of the hardened layer 320 was measured using a gloss meter to measure the specular reflection intensity of the surface of the hardened layer 320 under standard test conditions with an incident angle of 60°.

[0077] The low-haze transparent fiberglass layer 100, in conjunction with the high-gloss curing layer 320, with its high reflectivity and high smoothness, can greatly reduce the diffuse reflection loss of light on the surface of the cover plate 10, allowing more light to penetrate the cover plate 10, further enhancing the light penetration ability, and thus significantly improving the transparency of the cover plate 10.

[0078] In another example, the transparent fiberglass layer 100 has a light transmittance of 85% to 90% and a haze of 2% to 13%; the hardened layer 320 has a gloss of 10 GU to 45 GU. In this example, the light transmittance of the transparent fiberglass layer 100 includes, but is not limited to, 85%, 86%, 88%, 89%, or 90%, or any two of these values ​​as endpoints. The haze of the transparent fiberglass layer 100 includes, but is not limited to, 2%, 5%, 10%, or 13%, or any two of these values ​​as endpoints. The gloss of the hardened layer 320 includes, but is not limited to, 10 GU, 15 GU, 20 GU, 25 GU, 30 GU, 35 GU, 40 GU, or 45 GU, or any two of these values ​​as endpoints. In this example, the gloss of the hardened layer 320 is measured using a gloss meter to determine the specular reflection intensity of the surface of the hardened layer 320 under standard test conditions with an incident angle of 60°.

[0079] In the above example, the low-haze transparent fiberglass layer 100 and the low-gloss matte hardened layer 320 work together. The matte hardened layer 320, with its low reflectivity and moderately smooth surface, reduces glare. Simultaneously, the low-haze transparent fiberglass layer 100 reduces scattering loss during light transmission, allowing light to diffuse softly while maintaining high light transmittance, thereby improving the visual comfort and light uniformity of the cover under different lighting conditions. See also... Figure 3 In some examples, a first pattern layer 410 is also formed on the first surface 111 of the transparent fiberglass layer 100. The first pattern layer 410 is disposed between the transparent fiberglass layer 100 and the inner functional layer 200.

[0080] Since the transparent fiberglass layer 100 has light-transmitting properties, after the first pattern layer 410 is formed on the first surface 111, the texture structure such as dark patterns and background patterns in the transparent fiberglass layer 100 can be clearly presented through light penetration or reflection, realizing the visualization effect of background patterns and dark patterns.

[0081] Understandably, in this example, the "first pattern layer 410" is a functional layer obtained by screen printing. The pattern of the first pattern layer 410 includes, but is not limited to, fonts or logos.

[0082] See Figure 4 In some examples, a second pattern layer 420 is also formed on the second surface 112 of the transparent fiberglass layer 100. The second pattern layer 420 is disposed between the transparent fiberglass layer 100 and the outer functional layer 300.

[0083] In this example, a second pattern layer 420 is also formed on the second surface 112 of the transparent fiberglass layer 100. Under light conditions, the second pattern layer 420 acts as a light-blocking layer, allowing light to be projected from the edge of the second pattern layer 420 onto the luminescent ink layer 210 and the cover ink layer 220. That is, the presence of the second pattern layer 420 does not impede the energy storage and light emission characteristics of the luminescent ink layer 210 under light. Furthermore, due to the distance difference between the second pattern layer 420, the luminescent ink layer 210, and the cover ink layer 220, they can provide a richer sense of three-dimensionality and visual depth through light and shadow superposition and luminescence effects under different lighting conditions, both day and night. It can be understood that in this example, the "second pattern layer 420" is a functional layer obtained through screen printing. The pattern of the second pattern layer 420 includes, but is not limited to, fonts or logos.

[0084] Understandably, the first pattern layer 410 and the second pattern layer 420 are each independently formed on the first surface 111 or the second surface 112 of the transparent fiberglass layer 100. The cover plate 10 may contain only the first pattern layer 410, only the second pattern layer 420, or both. When the first pattern layer 410 is formed on the first surface 111 of the transparent fiberglass layer 100 and the second pattern layer 420 is formed on the second surface 112 of the transparent fiberglass layer 100, the corresponding structural diagram is as follows. Figure 5 As shown.

[0085] See Figure 6 In some examples, the inner functional layer 200 also includes a textured layer 230 and a coating layer 240 stacked together, with the coating layer 240 adjacent to the luminescent ink layer 210.

[0086] In some examples, the thickness of the texture layer 230 is between 9 μm and 15 μm. Understandably, the thickness of the texture layer 230 includes, but is not limited to, 9 µm, 10 µm, 11 µm, 12 µm, 13 µm, 14 µm, or 15 µm, or any two of these values ​​as endpoints. Controlling the thickness of the texture layer 230 within this range ensures that the texture structure is clearly discernible and the visual effect is outstanding, while avoiding the problems of excessive thickness affecting the overall performance of the composite cover plate 10, or insufficient texture display due to insufficient thickness. In some examples, the texture layer 230 is obtained through UV transfer printing.

[0087] In some examples, the thickness of the coating layer 240 is from 200 nm to 700 nm. For example, the thickness of the coating layer 240 includes, but is not limited to, 200 nm, 300 nm, 400 nm, 500 nm, 600 nm, or 700 nm. In this example, the coating layer 240 is obtained by PVD. For example, the material of the coating layer 240 includes, but is not limited to, metals and metal oxides. Further for example, the material of the coating layer 240 includes, but is not limited to, ZrO / SiO / NbO / SiO / NbO composite materials.

[0088] In some examples, the color reflectance of the coating layer 240 is not less than 30%. Further, the color reflectance of the coating layer 240 is between 30% and 80%. Limiting the color reflectance of the coating layer 240 can effectively enhance the color performance and gloss of the composite cover plate 10.

[0089] See Figure 7 In some examples, the number of texture layer 230 and coating layer 240 is two. That is, the inner functional layer 200 includes a texture layer 230, a coating layer 240, and another texture layer 230 and a coating layer 240 stacked together. The inner functional layer 200 with a dual-texture structure can enhance the three-dimensional visual effect of the surface through the synergistic effect of the upper and lower texture layers 230 and the coating layer 240. At the same time, it can further optimize the light and shadow hierarchy of the texture by using the light control of the coating layer 240, and improve the wear resistance and optical stability of the overall structure.

[0090] See Figure 8 In some examples, the inner functional layer 200 also includes a color layer 250. The color layer 250 is disposed between the luminescent ink layer 210 and the undercoat ink layer 220.

[0091] In this example, "color layer 250" is a functional layer prepared by screen printing. Understandably, the color layer 250 can be a functional layer prepared by screen printing, offset printing, color printing, inkjet printing, dyeing, or other methods. By placing the color layer 250 between the luminescent ink layer 210 and the undercoat ink layer 220, the tone and saturation of the luminescent display can be adjusted through color overlay, achieving color harmony and visual hierarchy under different lighting conditions during the day and night.

[0092] In one example, the thickness of the color layer 250 is between 5µm and 12µm. For example, the thickness of the color layer 250 includes, but is not limited to, 5µm, 6µm, 7µm, 8µm, 9µm, 10µm, 11µm, or 12µm. A color layer 250 within the above thickness range ensures a balance between printing quality and cost, while also guaranteeing good opacity, color saturation, and adhesion of the ink layer.

[0093] See Figure 9In some examples, the cover plate 10 includes a transparent fiberglass layer 100, an inner functional layer 200, and an outer functional layer 300. The transparent fiberglass layer 100 has a first surface 111 and a second surface 112 disposed opposite to each other, and a first pattern layer 410 and a second pattern layer 420 are formed on the first surface 111 and the second surface 112, respectively. The inner functional layer 200 is disposed on the first surface 111 and includes a texture layer 230, a coating layer 240, a luminescent ink layer 210, a color layer 250, and a cover ink layer 220 stacked together, wherein the texture layer 230 is close to the transparent fiberglass layer 100. The outer functional layer 300 includes a varnish undercoat 310 and a hardening layer 320 stacked together, wherein the varnish undercoat 310 is close to the transparent fiberglass layer 100.

[0094] A second aspect of this example provides an electronic device including a composite cover 10 of any of the first aspects of this example.

[0095] Understandably, the electronic device of this example has all the advantages of the composite cover 10 described above, so they will not be repeated here.

[0096] For example, the electronic device includes a composite cover 10 and an electronic device body. The electronic device body is bonded to the inner functional layer 200 of the composite cover 10. For example, the electronic device includes, but is not limited to, a mobile phone, tablet, computer, television, printer, copier, or electronic watch. For example, the composite cover 10 is the rear cover 10 of the electronic device.

[0097] The technical features in the above examples can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above examples are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0098] The examples described above merely illustrate several embodiments of this utility model to facilitate a detailed understanding of its technical solutions, but should not be construed as limiting the scope of protection of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the scope of protection of this utility model. It should be understood that technical solutions obtained by those skilled in the art based on the technical solutions provided by this utility model through logical analysis, reasoning, or limited experimentation are all within the scope of protection of the appended claims. Therefore, the scope of protection of this utility model patent should be determined by the content of the appended claims, and the specification can be used to interpret the content of the claims.

Claims

1. A cover plate, characterized in that The cover plate comprises: a transparent glass fiber layer having a first surface; an inner functional layer arranged on the first surface; the inner functional layer comprises a night light ink layer and a primer ink layer arranged in a stack, and the night light ink layer is close to the transparent glass fiber layer.

2. The cover sheet of claim 1, wherein The transparent glass fiber layer further has a second surface arranged opposite to the first surface, and the cover plate further comprises an outer functional layer arranged on the second surface; the outer functional layer comprises a varnish primer layer and a hardening layer arranged in a stack; the varnish primer layer is close to the transparent glass fiber layer.

3. The cover sheet of claim 2, wherein, The transparent glass fiber layer and the hardening layer have one of the following characteristics: (1) the light transmittance of the transparent glass fiber layer is 85% to 90%, the haze of the transparent glass fiber layer is greater than 13% and less than or equal to 50%, and the gloss of the hardening layer is 10GU to 45GU; (2) the light transmittance of the transparent glass fiber layer is 85% to 90%, the haze of the transparent glass fiber layer is 2% to 13%, and the gloss of the hardening layer is greater than or equal to 70GU; (3) the light transmittance of the transparent glass fiber layer is 85% to 90%, the haze of the transparent glass fiber layer is 2% to 13%, and the gloss of the hardening layer is 10GU to 45GU.

4. The cover plate according to claim 2 or 3, characterized in that The cover plate has one or more of the following characteristics: (1) the second surface of the transparent glass fiber layer further forms a second pattern layer; the second pattern layer is arranged between the transparent glass fiber layer and the outer functional layer; (2) the hardness of the side surface of the hardening layer away from the transparent glass fiber layer is 2H to 5H; (3) the thickness of the varnish primer layer is 3μm to 15μm; (4) the varnish primer layer comprises at least one of an acrylic resin layer and a polyurethane resin layer.

5. The cover sheet according to any one of claims 1 to 3, characterized in that The inner functional layer further comprises a texture layer and a plating layer arranged in a stack, and the plating layer is close to the night light ink layer; and / or, the first surface of the transparent glass fiber layer further forms a first pattern layer; the first pattern layer is arranged between the transparent glass fiber layer and the inner functional layer.

6. The cover sheet of claim 5, wherein, The thickness of the texture layer is 9μm to 15μm; and / or, the thickness of the plating layer is 200nm to 700nm; and / or, the color reflectivity of the plating layer is not less than 30%.

7. The cover sheet according to any one of claims 1 to 3, characterized in that The thickness of the night light ink layer is 10μm to 20μm; and / or, the night light ink layer comprises at least one of a rare earth aluminate layer and a rare earth silicate layer.

8. The cover sheet according to any one of claims 1 to 3, characterized in that The inner functional layer further comprises a color layer arranged between the night light ink layer and the primer ink layer.

9. The cover sheet according to any one of claims 1 to 3, characterized in that The thickness of the transparent glass fiber layer is 0.3mm to 0.8mm; and / or, the bending strength of the transparent glass fiber layer is 400MPa to 600MPa; and / or, the bending modulus of the transparent glass fiber layer is 17GP to 28GP.

10. An electronic device, comprising: The cover plate comprises any one of claims 1 to 9.

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