Low-reflection high-transmittance wear-resistant anti-UV cover plate and vehicle-mounted equipment

Abstract

The utility model discloses a low-reflection high-transmittance wear-resistant anti-UV cover plate which comprises a glass cover plate. The antireflection structure is arranged on one side of the glass cover plate and comprises a high-transmittance film layer, an anti-UV film layer and a wear-resistant film layer, the refractive index of the wear-resistant film layer is larger than that of the high-transmittance film layer, and the refractive index of the high-transmittance film layer is larger than that of the anti-UV film layer; wherein the number of the high-permeability film layers and the number of the anti-UV film layers are both multiple, the multiple high-permeability film layers and the multiple anti-UV film layers are alternately arranged, and the wear-resistant film layer is arranged on the outermost side of the high-permeability film layers and the anti-UV film layers which are alternately arranged. The low-reflectivity, high-transmittance, wear-resistant and anti-UV cover plate realizes the functions of low reflectivity, high transmittance, wear resistance and UV resistance by using fewer film layers. The utility model further discloses vehicle-mounted equipment which comprises the low-reflection high-transmittance wear-resistant anti-UV cover plate.

Description

Technical Field

[0001] The utility model relates to a glass cover plate, in particular to a low-reflection, high-transmittance, wear-resistant and anti-UV cover plate and a vehicle-mounted device. Background Art

[0002] A glass cover plate is a thin sheet made of transparent glass material, which is used to be arranged in front of a touch screen or a display screen to protect the touch screen or the display screen. With the application of touch screens or display screens in the automotive field, the industry has higher requirements for the performance of glass cover plates, requiring that the glass cover plates need to have functions such as low reflectivity, high transmittance, wear resistance and anti-UV at the same time.

[0003] In order to meet the above functions, the prior art generally sequentially arranges a low-reflection film, a high-transmittance film, a wear-resistant film and an anti-UV film on the surface of the glass cover plate. There are too many related functional film layers, which not only increases the cost of the product, but also increases the number of coating times, bringing more potential risks of defects. Summary of the Utility Model

[0004] In order to solve the above deficiencies of the prior art, the utility model provides a low-reflection, high-transmittance, wear-resistant and anti-UV cover plate, which realizes the functions of low reflectivity, high transmittance, wear resistance and anti-UV with fewer film layers.

[0005] The utility model also provides a vehicle-mounted device, including the above low-reflection, high-transmittance, wear-resistant and anti-UV cover plate.

[0006] The technical problems to be solved by the utility model are realized through the following technical solutions:

[0007] A low-reflection, high-transmittance, wear-resistant and anti-UV cover plate, comprising:

[0008] A glass cover plate;

[0009] An anti-reflection structure, arranged on one side of the glass cover plate, including a high-transmittance film layer, an anti-UV film layer and a wear-resistant film layer. The refractive index of the wear-resistant film layer is greater than that of the high-transmittance film layer, and the refractive index of the high-transmittance film layer is greater than that of the anti-UV film layer; wherein, both the high-transmittance film layer and the anti-UV film layer have multiple layers, and the multiple high-transmittance film layers and the multiple anti-UV film layers are alternately arranged, and the wear-resistant film layer is arranged on the outermost side of the alternately arranged high-transmittance film layer and anti-UV film layer.

[0010] Further, the high-transmittance film layer is calcium fluoride, and its thickness is between 100-120 nm.

[0011] Further, the anti-UV film layer is sodium fluoroaluminate, and its thickness is between 100-120 nm.

[0012] Further, the total thickness of the multi-layer high-transparency film layer and the multi-layer anti-UV film layer is between 400 - 500 nm.

[0013] Further, there are two layers each for the high-transparency film layer and the anti-UV film layer.

[0014] Further, among the alternately arranged high-transparency film layer and anti-UV film layer, the layer facing the glass cover plate side is the high-transparency film layer, and the layer facing the wear-resistant film layer side is the anti-UV film layer.

[0015] Further, the wear-resistant film layer is niobium pentoxide, and its thickness is between 100 - 200 nm.

[0016] Further, the low-reflection high-transparency wear-resistant anti-UV cover plate further includes an adhesion-enhancing film layer, and the adhesion-enhancing film layer is arranged between the glass cover plate and the anti-reflection structure.

[0017] Further, the adhesion-enhancing film layer is silicon dioxide, and its thickness is between 50 - 100 nm.

[0018] A vehicle-mounted device includes a touch screen or a display screen, and the above-mentioned low-reflection high-transparency wear-resistant anti-UV cover plate, and the low-reflection high-transparency wear-resistant anti-UV cover plate is arranged in front of the touch screen or the display screen.

[0019] The present utility model has the following beneficial effects: The low-reflection high-transparency wear-resistant anti-UV cover plate of the present utility model is provided with the high-transparency film layer, the anti-UV film layer and the wear-resistant film layer on the glass cover plate to respectively achieve the functions of high transmittance, wear resistance and anti-UV, and the refractive indexes of the high-transparency film layer, the anti-UV film layer and the wear-resistant film layer are different. By cleverly designing the number of layers and positions of the high-transparency film layer, the anti-UV film layer and the wear-resistant film layer respectively, a anti-reflection structure with alternately high and low refractive indexes is formed to achieve the anti-reflection function, without a special anti-reflection film layer, reducing the number of film layers of the cover plate. Description of the Drawings

[0020] Figure 1 It is a schematic stacking structure diagram of the low-reflection high-transparency wear-resistant anti-UV cover plate provided by the present utility model.

[0021] Figure 2 It is a schematic stacking structure diagram of another low-reflection high-transparency wear-resistant anti-UV cover plate provided by the present utility model.

[0022] Figure 3 It is a schematic stacking structure diagram of the vehicle-mounted device provided by the present utility model. Detailed Embodiment

[0023] The present utility model will be described in detail below with reference to the accompanying drawings and embodiments. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation of the present utility model.

[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0025] In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0026] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation", "setting", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may also be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] Embodiment 1

[0028] As Figure 1 shown, a low-reflection, high-transmittance, wear-resistant and UV-resistant cover plate includes:

[0029] A glass cover plate 11;

[0030] An anti-reflection structure 12 is provided on one side of the glass cover plate 11, which includes a high-transmittance film layer 121, an anti-UV film layer 122, and a wear-resistant film layer 123. The refractive index of the wear-resistant film layer 123 is greater than that of the high-transmittance film layer 121, and the refractive index of the high-transmittance film layer 121 is greater than that of the anti-UV film layer 122. Among them, both the high-transmittance film layer 121 and the anti-UV film layer 122 have multiple layers, and the multiple high-transmittance film layers 121 and the multiple anti-UV film layers 122 are alternately arranged, and the wear-resistant film layer 123 is provided on the outermost side of the alternately arranged high-transmittance film layer 121 and anti-UV film layer 122.

[0031] In the low-reflection, high-transmittance, wear-resistant, and anti-UV cover plate of the present utility model, the high-transmittance film layer 121, the anti-UV film layer 122, and the wear-resistant film layer 123 are provided on the glass cover plate 11 to respectively achieve the functions of high transmittance, wear resistance, and anti-UV. Moreover, the refractive indices of the high-transmittance film layer 121, the anti-UV film layer 122, and the wear-resistant film layer 123 are different from each other. By ingeniously designing the number of layers and positions of the high-transmittance film layer 121, the anti-UV film layer 122, and the wear-resistant film layer 123 respectively, an anti-reflection structure 12 with alternately high and low refractive indices is formed to achieve the anti-reflection function, without a special anti-reflection film layer, reducing the number of film layers of the cover plate.

[0032] Since the refractive indices of the high-transmittance film layer 121, the anti-UV film layer 122, and the wear-resistant film layer 123 are different from each other, when visible light passes through the interface between the high-transmittance film layer 121 and the anti-UV film layer 122, and the interface between the high-transmittance film layer 121 or the anti-UV film layer 122 and the wear-resistant film layer 123, reflection will occur to form reflected light. By reasonably designing the thicknesses of each layer of the high-transmittance film layer 121, the anti-UV film layer 122, and the wear-resistant film layer 123, when the optical path difference between two adjacent reflected lights is 1 / 4 wavelength of visible light, the two adjacent reflected lights will interfere with each other and cancel each other out, thereby reducing the reflected light and lowering the reflectivity.

[0033] In this embodiment, the high-transmittance film layer 121 is calcium fluoride, and its thickness is between 100 - 120 nm; the anti-UV film layer 122 is sodium fluoroaluminate, and its thickness is between 100 - 120 nm; the wear-resistant film layer 123 is niobium pentoxide, and its thickness is between 100 - 200 nm.

[0034] Calcium fluoride, with the chemical formula CaF2, is an inorganic compound, usually known as fluorite or fluorspar. Its refractive index is about 1.4. It has a low dispersion rate and a high light transmittance, and shows excellent light transmission performance in the ultraviolet, visible, and infrared spectral ranges.

[0035] Sodium hexafluoroaluminate, with the chemical formula Na3AlF6, is an inorganic compound, also known as sodium hexafluoroaluminate or cryolite. Its refractive index is around 1.3, and it can absorb ultraviolet light in visible light.

[0036] Niobium pentoxide, with the chemical formula Nb2O5, is an inorganic compound. Its refractive index is around 1.7, and it has a very high hardness, usually between 9 and 9.5 (Mohs hardness scale). This hardness value is higher than that of most metals and can even be comparable to that of steel and cemented carbide. Due to its high hardness, it has excellent wear resistance, which is particularly significant under harsh conditions such as high temperature and high pressure, enabling it to operate stably for a long time under these conditions.

[0037] Of course, the specific materials and thickness ranges of the high-transparency film layer 121, anti-UV film layer 122, and wear-resistant film layer 123 are not limited to the above materials and thickness ranges. Those skilled in the art can select other suitable materials and thickness ranges according to actual product requirements, costs, processes, and other factors, and should not be limited by this.

[0038] Preferably, the total thickness of the multi-layer high-transparency film layer 121 and the multi-layer anti-UV film layer 122 is between 400 - 500 nm.

[0039] In this embodiment, the high-transparency film layer 121 and the anti-UV film layer 122 each have two layers. And preferably, among the alternately arranged high-transparency film layer 121 and anti-UV film layer 122, the layer facing the glass cover plate 11 is the high-transparency film layer 121, and the layer facing the wear-resistant film layer 123 is the anti-UV film layer 122.

[0040] Embodiment 2

[0041] As an optimized solution of Embodiment 1, in this embodiment, as Figure 2 shown, the low-reflection high-transparency wear-resistant anti-UV cover plate further includes an adhesion-enhancing film layer 13, and the adhesion-enhancing film layer 13 is disposed between the glass cover plate 11 and the antireflection structure 12.

[0042] By disposing the adhesion-enhancing film layer 13 between the glass cover plate 11 and the antireflection structure 12, the low-reflection high-transparency wear-resistant anti-UV cover plate of the present utility model utilizes the good bonding force between the adhesion-enhancing film layer 13 and the glass cover plate 11 to improve the adhesion of the antireflection structure 12 to the glass cover plate 11, thereby improving the stability and durability of the cover plate.

[0043] In this embodiment, the adhesion-enhancing film layer 13 is silicon dioxide, and its thickness is between 50 - 100 nm.

[0044] As an inorganic non-metallic oxide, silicon dioxide has good bonding ability with various inorganic film layers in the glass cover plate 11 and the anti-reflection structure 12.

[0045] Embodiment III

[0046] As Figure 3 shown, a vehicle-mounted device includes a touch screen or a display screen 3, and the low-reflection, high-transmittance, wear-resistant, and anti-UV cover plate 1 described in Embodiment I or Embodiment II. The low-reflection, high-transmittance, wear-resistant, and anti-UV cover plate 1 is disposed in front of the touch screen or the display screen 3.

[0047] Preferably, the low-reflection, high-transmittance, wear-resistant, and anti-UV cover plate 1 is adhered to the front of the touch screen or the display screen 3 through an OCA optical adhesive 2.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention and are not intended to limit them. Although the embodiments of the present invention have been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the embodiments of the present invention can still be modified or equivalently replaced, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A low-reflection, high-transmittance, wear-resistant and UV-resistant cover plate, characterized in that, Comprising: A glass cover plate; An anti-reflection structure provided on one side of the glass cover plate, including a high-transmission film layer, an anti-UV film layer, and a wear-resistant film layer. The refractive index of the wear-resistant film layer is greater than that of the high-transmission film layer, and the refractive index of the high-transmission film layer is greater than that of the anti-UV film layer. Among them, both the high-transmission film layer and the anti-UV film layer have multiple layers, and the multiple high-transmission film layers and the multiple anti-UV film layers are alternately arranged, and the wear-resistant film layer is provided on the outermost side of the alternately arranged high-transmission film layer and anti-UV film layer.

2. The low-reflection, high-transmittance, wear-resistant and UV-resistant cover plate according to claim 1, wherein The high-transmission film layer is calcium fluoride, and its thickness is between 100 and 120 nm.

3. The low-reflection, high-transmittance, wear-resistant, and UV-resistant cover plate according to claim 1, wherein The anti-UV film layer is sodium fluoroaluminate, and its thickness is between 100 and 120 nm.

4. The low-reflection, high-transmittance, wear-resistant and UV-resistant cover plate according to any one of claims 1-3, characterized in that, The total thickness of the multiple high-transmission film layers and the multiple anti-UV film layers is between 400 and 500 nm.

5. The low-reflection, high-transmittance, wear-resistant and UV-resistant cover plate according to any one of claims 1-3, characterized in that, Both the high-transmission film layer and the anti-UV film layer have two layers.

6. The low-reflection, high-transmittance, wear-resistant and UV-resistant cover plate according to any one of claims 1-3, characterized in that, Among the alternately arranged high-transmission film layer and anti-UV film layer, the one facing the glass cover plate side is the high-transmission film layer, and the one facing the wear-resistant film layer side is the anti-UV film layer.

7. The low-reflection, high-transmittance, wear-resistant and UV-resistant cover plate according to claim 1, characterized in that, The wear-resistant film layer is niobium pentoxide, and its thickness is between 100 and 200 nm.

8. The low-reflection, high-transmittance, wear-resistant, and anti-UV cover plate according to claim 1, wherein The low-reflection, high-transmission, wear-resistant, anti-UV cover plate further includes an adhesion enhancement film layer, and the adhesion enhancement film layer is provided between the glass cover plate and the anti-reflection structure.

9. The low-reflection, high-transmittance, wear-resistant and UV-resistant cover plate according to claim 8, characterized in that, The adhesion enhancement film layer is silicon dioxide, and its thickness is between 50 and 100 nm.

10. A vehicle-mounted device, characterized in that, Comprising a touch screen or a display screen, and the low-reflection, high-transmission, wear-resistant, anti-UV cover plate according to claim 1, wherein the low-reflection, high-transmission, wear-resistant, anti-UV cover plate is provided in front of the touch screen or the display screen.

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