Wear-resistant and corrosion-resistant anti-reflection cover plate structure

Abstract

The utility model discloses a wear-resistant and corrosion-resistant anti-reflection cover plate structure which comprises a glass cover plate layer. The antireflection film layer is arranged on the surface of one side of the glass cover plate layer; and the elemental chromium film layer or the chromium alloy film layer is arranged on the surface of one side, far away from the glass cover plate layer, of the antireflection film layer. According to the anti-reflection cover plate structure, low reflectivity is achieved, and meanwhile high abrasion resistance and corrosion resistance are achieved.

Description

Technical Field

[0001] The utility model relates to the technology of protective covers, in particular to an anti-reflection cover structure with wear resistance and corrosion resistance. Background Art

[0002] An anti-reflection cover plate, also known as an anti-reflection cover plate or an anti-reflection cover, is a cover plate material that reduces light reflection and improves light transmittance through special technical treatment. It reduces light reflection by applying an anti-reflection film (AR film) on its surface or inside. It is usually composed of multiple layers of materials with different refractive indexes stacked alternately. Using the principle of optical interference, the reflected light cancels each other out, thus significantly reducing the reflectivity of the cover plate surface and increasing the light transmittance. Such cover plates are widely used in many fields, especially in consumer electronics, display technology, optical instruments, and solar cells.

[0003] However, the anti-reflection film layer on the surface of the existing anti-reflection cover plates often cannot achieve both a low reflectivity and high wear resistance and corrosion resistance. Therefore, it is often scratched by foreign objects or corroded by acid-base liquids during use. Summary of the Utility Model

[0004] In order to solve the above deficiencies of the prior art, the utility model provides an anti-reflection cover structure that has high wear resistance and corrosion resistance while achieving a low reflectivity.

[0005] The technical problems to be solved by the utility model are realized through the following technical solutions:

[0006] An anti-reflection cover structure with wear resistance and corrosion resistance, comprising:

[0007] A glass cover layer;

[0008] An anti-reflection film layer, provided on one side surface of the glass cover layer;

[0009] A chromium single-element film layer or a chromium alloy film layer, provided on the side surface of the anti-reflection film layer away from the glass cover layer.

[0010] Further, the thickness of the chromium single-element film layer or the chromium alloy film layer is 20nm - 50nm.

[0011] Further, the anti-reflection film layer includes a plurality of high-refractive-index film layers and a plurality of low-refractive-index film layers, and the high-refractive-index film layers and the low-refractive-index film layers are alternately stacked.

[0012] Further, the total thickness of the anti-reflection film layer is 230nm - 310nm, and the thickness of each high-refractive-index film layer and each low-refractive-index film layer is 5nm - 150nm.

[0013] Furthermore, the anti-reflection cover plate structure further includes a silicon nitride film layer, and the silicon nitride film layer is disposed between the anti-reflection film layer and the chromium single-element film layer or chromium alloy film layer.

[0014] Furthermore, the thickness of the silicon nitride film layer is 50 nm - 100 nm.

[0015] Furthermore, the anti-reflection cover plate structure further includes a single-element silicon film layer, and the single-element silicon film layer is disposed between the glass cover plate layer and the anti-reflection film layer.

[0016] Furthermore, the thickness of the single-element silicon film layer is 50 nm - 100 nm.

[0017] Furthermore, the anti-reflection cover plate structure further includes a silicon oxide film layer, and the silicon oxide film layer is disposed between the single-element silicon film layer and the anti-reflection film layer.

[0018] Furthermore, the thickness of the silicon oxide film layer is 100 nm - 200 nm.

[0019] The present utility model has the following beneficial effects: The anti-reflection cover plate structure of the present utility model reduces the reflectivity of the glass cover plate layer to visible light by disposing the anti-reflection film layer on the outer surface of the glass cover plate layer, so as to improve the visibility of the cover plate in a strong light environment. At the same time, a chromium single-element film layer or chromium alloy film layer is disposed on the outer surface of the anti-reflection film layer, and the wear resistance and corrosion resistance of metallic chromium are utilized to improve the protection ability of the cover plate, preventing foreign objects from wearing the anti-reflection film layer and preventing acid-base liquids from corroding the anti-reflection film layer. Description of the Drawings

[0020] Figure 1 It is a stacked structure diagram of the anti-reflection cover plate structure provided by the present utility model.

[0021] Figure 2 It is a stacked structure diagram of the anti-reflection film layer in the anti-reflection cover plate structure provided by the present utility model.

[0022] Figure 3 It is a stacked structure diagram of another anti-reflection cover plate structure provided by the present utility model.

[0023] Figure 4 It is a stacked structure diagram of another anti-reflection cover plate structure provided by the present utility model.

[0024] Figure 5 It is a stacked structure diagram of another anti-reflection cover plate structure provided by the present utility model. Detailed Embodiments

[0025] 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 accompanying drawings, where 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 by referring to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0026] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are 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 to the present utility model.

[0027] 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, "a plurality of" means two or more unless otherwise specifically defined.

[0028] In the present utility model, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected to", "fixed", "set", 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 communication inside 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.

[0029] Embodiment 1

[0030] As Figure 1 shown, a wear-resistant and corrosion-resistant anti-reflection cover plate structure includes:

[0031] A glass cover plate layer 10;

[0032] An anti-reflection film layer 20, disposed on one side surface of the glass cover plate layer 10;

[0033] A chromium single-element film layer or a chromium alloy film layer 30, disposed on the side surface of the anti-reflection film layer 20 away from the glass cover plate layer 10.

[0034] The anti-reflection cover plate structure of the present utility model sets the anti-reflection film layer 20 on the outer surface of the glass cover plate layer 10, and uses the anti-reflection film layer 20 to reduce the reflectivity of the glass cover plate layer 10 to visible light, so as to improve the visibility of the cover plate in a strong light environment. At the same time, a chromium single-element film layer or a chromium alloy film layer 30 is set on the outer surface of the anti-reflection film layer 20, and the wear resistance and corrosion resistance of metallic chromium are used to improve the protection ability of the cover plate, preventing foreign objects from wearing the anti-reflection film layer 20 and preventing acid-base liquids from corroding the anti-reflection film layer 20.

[0035] In this embodiment, by reasonably designing the thickness of the chromium single-element film layer or the chromium alloy film layer 30, the chromium single-element film layer or the chromium alloy film layer 30 exhibits a relatively high light transmittance to meet the light transmission requirements of the cover plate, and at the same time, the refractive index of the chromium single-element film layer or the chromium alloy film layer 30 is the same as or close to the refractive index of the outermost refractive film layer in the anti-reflection film layer 20. Preferably, the thickness of the chromium single-element film layer or the chromium alloy film layer 30 is 20 nm - 50 nm.

[0036] As Figure 2 shown, the anti-reflection film layer 20 includes a plurality of high refractive index film layers 21 and a plurality of low refractive index film layers 22, and the respective high refractive index film layers 21 and the respective low refractive index film layers 22 are alternately stacked.

[0037] The anti-reflection film of the present utility model is based on the principle of light coherence. Since the high refractive index film layer 21 and the low refractive index film layer 22 have different refractive indices for light, sunlight will be reflected at the interface between the adjacent high refractive index film layer 21 and low refractive index film layer 22. The wavelength of the reflected light is related to the film thickness of the refractive index thin film and the low refractive index film layer 22. By matching the thicknesses of the high refractive index film layer 21 and the low refractive index film layer 22, the optical path difference between the adjacent reflected lights is a quarter of the wavelength, and the reflected lights will interfere with each other and cancel out, thereby achieving the purpose of reducing the reflectivity.

[0038] The high refractive index film layer 21 can be but is not limited to a titanium dioxide film layer, a silicon nitride film layer 40, an aluminum oxide film layer or a niobium pentoxide film layer, and the low refractive index film layer 22 can be but is not limited to a silicon dioxide film layer 60, a nano-porous silicon oxide film layer 60 or a niobium pentoxide film layer.

[0039] It should be particularly noted here that the material selection of the high refractive index film layer 21 and the low refractive index film layer 22 is not fixed but relative. For example, the niobium pentoxide film layer can be used both as the high refractive index film layer 21 and as the low refractive index film layer 22, which depends on the refractive index of another film layer it is paired with.

[0040] The total thickness of the antireflection film layer 20 is 230 nm - 310 nm. Among them, the thickness of each high-refractive-index film layer 21 and each low-refractive-index film layer 22 is 5 nm - 150 nm.

[0041] In this embodiment, the high-refractive-index film layer 21 is made of a titanium dioxide film layer, and its refractive index for visible light is approximately 2.4. The low-refractive-index film layer 22 is made of a niobium pentoxide film layer, and its refractive index for visible light is approximately 2.2. There are three layers of the titanium dioxide film layer (i.e., the high-refractive-index film layer 21), and there are also three layers of the niobium pentoxide film layer (i.e., the low-refractive-index film layer 22); the antireflection film layer 20 includes a first titanium dioxide film layer, a first niobium pentoxide film layer, a second titanium dioxide film layer, a second niobium pentoxide film layer, a third titanium dioxide film layer, and a third niobium pentoxide film layer that are sequentially stacked. The thickness of each titanium dioxide film layer is 50 nm, and the thickness of each niobium pentoxide film layer is 30 nm.

[0042] Embodiment Two

[0043] As an optimized solution of Embodiment One, in this embodiment, as Figure 3 shown, the antireflection cover structure further includes a silicon nitride film layer 40, and the silicon nitride film layer 40 is disposed between the antireflection film layer 20 and the chromium single-element film layer or chromium alloy film layer 30.

[0044] The antireflection cover structure of the present utility model enhances the durability and heat resistance of the cover plate by disposing the silicon nitride film layer 40 between the antireflection film layer 20 and the chromium single-element film layer or chromium alloy film layer 30 and utilizing the good chemical stability and thermal stability of the silicon nitride film layer 40.

[0045] Preferably, the thickness of the silicon nitride film layer 40 is 50 nm - 100 nm.

[0046] Embodiment Three

[0047] As an optimized solution of Embodiment One or Embodiment Two, in this embodiment, as Figure 4 shown, the antireflection cover structure further includes a single-crystal silicon film layer 50, and the single-crystal silicon film layer 50 is disposed between the glass cover plate layer 10 and the antireflection film layer 20.

[0048] The antireflection cover structure of the present utility model increases the adhesion of the antireflection film layer 20 to the glass cover plate layer 10 and prevents the antireflection film layer 20 from peeling off the glass cover plate layer 10 by disposing the single-crystal silicon film layer 50 between the glass cover plate layer 10 and the antireflection film layer 20 and utilizing the good compatibility of the single-crystal silicon film layer 50 with various materials.

[0049] Preferably, the thickness of the single-crystalline silicon film layer 50 is 50 nm - 100 nm.

[0050] Example 4

[0051] As an optimized solution of Example 3, in this example, as Figure 5 shown, the anti-reflection cover plate structure further includes a silicon oxide film layer 60, and the silicon oxide film layer 60 is disposed between the single-crystalline silicon film layer 50 and the anti-reflection film layer 20.

[0052] The anti-reflection cover plate structure of the present invention improves the insulation protection ability of the cover plate by disposing the silicon oxide film layer 60 between the single-crystalline silicon film layer 50 and the anti-reflection film layer 20 and utilizing the insulation property of the silicon oxide film layer 60. At the same time, since both the silicon oxide film layer 60 and the single-crystalline silicon film layer 50 contain silicon atoms, the adhesion ability of the anti-reflection film layer 20 can be further improved through their cooperation.

[0053] Preferably, the thickness of the silicon oxide film layer 60 is 100 nm - 200 nm.

[0054] 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 do not make the modified technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wear-resistant and corrosion-resistant anti-reflection cover plate structure, characterized in that: include: Glass cover layer; An anti-reflection film layer is disposed on one side surface of the glass cover layer; A chromium single substance film layer or a chromium alloy film layer is arranged on the surface of the anti-reflection film layer on a side away from the glass cover layer.

2. The anti-reflection cover plate structure according to claim 1, characterized in that: The thickness of the chromium single substance film layer or the chromium alloy film layer is 20nm-50nm.

3. The anti-reflection cover plate structure according to claim 1, characterized in that: The anti-reflection film layer comprises a plurality of high refractive index film layers and a plurality of low refractive index film layers, and the high refractive index film layers and the low refractive index film layers are alternately stacked.

4. The anti-reflection cover plate structure according to claim 3, characterized in that: The total thickness of the anti-reflection film layer is 230nm-310nm, wherein the thickness of each high refractive index film layer and each low refractive index film layer is 5nm-150nm.

5. The anti-reflection cover plate structure according to claim 1, characterized in that: The anti-reflection cover plate structure further includes a silicon nitride film layer, and the silicon nitride film layer is arranged between the anti-reflection film layer and the chromium single substance film layer or the chromium alloy film layer.

6. The anti-reflection cover plate structure according to claim 5, characterized in that: The thickness of the silicon nitride film layer is 50nm-100nm.

7. The anti-reflection cover plate structure according to claim 1, characterized in that: The anti-reflection cover plate structure further includes a single silicon film layer, and the single silicon film layer is arranged between the glass cover plate layer and the anti-reflection film layer.

8. The anti-reflection cover plate structure according to claim 7, characterized in that: The thickness of the single silicon film layer is 50nm-100nm.

9. The anti-reflection cover plate structure according to claim 7, characterized in that: The anti-reflection cover plate structure further includes a silicon oxide film layer, and the silicon oxide film layer is arranged between the elemental silicon film layer and the anti-reflection film layer.

10. The anti-reflection cover plate structure according to claim 9, characterized in that: The thickness of the silicon oxide film layer is 100nm-200nm.

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