Coated cover plate with high adhesive force

Abstract

The utility model discloses a film-coated cover plate with high adhesive force, which comprises a glass cover plate and an optical coating film, a high-wettability coating film is arranged between the glass cover plate and the optical coating film, and the wettability between the high-wettability coating film and the glass cover plate is higher than the wettability between the optical coating film and the glass cover plate. According to the coated cover plate, the adhesive force of the optical coating film on the glass cover plate can be improved.

Description

Technical Field

[0001] This utility model relates to optical coating technology, and more particularly to a coating cover plate with high adhesion. Background Technology

[0002] With the continuous advancement of technology, glass covers are increasingly widely used in fields such as electronic displays, solar cells, and optical instruments. For example, in mobile phones, current touchscreen phones generally have a glass cover attached to the screen to protect it from scratches that could affect the display.

[0003] To improve the optical performance of glass covers, existing technologies typically involve applying various optical coatings to their surface, such as infrared filter coatings, low-reflection coatings, or optical polarization coatings. While these coatings offer good optical performance, they can develop cracks or even peel off over time, especially in harsh or extreme environments. Utility Model Content

[0004] To address the shortcomings of the prior art, this invention provides a coated cover plate that can improve the adhesion of optical coatings to glass cover plates.

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

[0006] A high-adhesion coated cover plate includes a glass cover plate and an optical coating, wherein a high-wetting coating is provided between the glass cover plate and the optical coating, and the wettability between the high-wetting coating and the glass cover plate is higher than the wettability between the optical coating and the glass cover plate.

[0007] Furthermore, the highly wettable coating is bonded to the glass cover via a covalent-ionic mixed chemical bond.

[0008] Furthermore, the highly wettable coating is a bismuth trioxide coating.

[0009] Furthermore, the thickness of the highly wettable coating is 100-120 nm.

[0010] Furthermore, the optical coating includes an anti-reflective coating.

[0011] Furthermore, the antireflective coating is a magnesium fluoride coating.

[0012] Furthermore, the thickness of the antireflective coating is 50-80 nm.

[0013] Furthermore, the coated cover plate also includes an organosilane layer, which covers the sides of the glass cover plate, the high wettability coating, and the optical coating.

[0014] Furthermore, the organosilane layer is a methacryloxysilane layer.

[0015] Furthermore, the thickness of the organosilane layer is 10-20 nm.

[0016] This invention has the following beneficial effects: The coated cover plate of this invention uses a highly wettable coating as an intermediate layer between the glass cover plate and the optical coating. The high wettability of the highly wettable coating improves the adhesion of the optical coating to the glass cover plate. Specifically, because the highly wettable coating has high wettability, it can form a stable bond with both the glass cover plate and the optical coating. Furthermore, since the highly wettable coating has higher wettability on the glass cover plate than the optical coating, the optical coating adheres to the surface of the glass cover plate with the highly wettable coating as an intermediate layer, resulting in better adhesion compared to directly fabricating it on the surface of the glass cover plate. Attached Figure Description

[0017] Figure 1 A schematic diagram of the stacked structure of the coated cover plate provided by this utility model.

[0018] Figure 2 A schematic diagram of the stacked structure of another coated cover plate provided by this utility model. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings and embodiments, examples of which are shown in the drawings. Throughout the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. 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.

[0020] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] 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 the technical features being referred to. Thus, a feature identified as "first," "second," or "third" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," "fixing," and "setting," 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] Example 1

[0024] like Figure 1 As shown, a high-adhesion coated cover plate includes a glass cover plate 1 and an optical coating 3. A high-wetting coating 2 is provided between the glass cover plate 1 and the optical coating 3. The wettability between the high-wetting coating 2 and the glass cover plate 1 is higher than that between the optical coating 3 and the glass cover plate 1.

[0025] In this invention, a highly wettable coating 2 is disposed as an intermediate layer between a glass cover plate 1 and an optical coating 3. The high wettability of the highly wettable coating 2 improves the adhesion of the optical coating 3 to the glass cover plate 1. Specifically, the highly wettable coating 2, due to its high wettability, can form a stable bond with both the glass cover plate 1 and the optical coating 3. Furthermore, since the highly wettable coating 2 has a higher wettability on the glass cover plate 1 than the optical coating 3, the optical coating 3 adheres to the surface of the glass cover plate 1 with the highly wettable coating 2 as an intermediate layer, resulting in better adhesion compared to when it is directly applied to the surface of the glass cover plate 1.

[0026] Preferably, the high wettability coating 2 is bonded to the glass cover plate 1 via a covalent-ionic mixed chemical bond. Due to the covalent-ionic mixed chemical bond, the high wettability coating 2 and the glass cover plate 1 have good surface chemical affinity, exhibiting high wettability between them. The high wettability coating 2 deposited on the surface of the glass cover plate 1 undergoes a gradual structural change with the glass cover plate 1, thereby forming an interface transition layer to enhance the bonding strength.

[0027] In this embodiment, the high wettability coating 2 is a bismuth trioxide coating, and the thickness of the high wettability coating 2 is 100-120 nm.

[0028] In some examples, the optical coating 3 includes an anti-reflection coating. The anti-reflection coating can reduce the reflectivity of the coating cover and increase the transmittance of the coating cover to improve light utilization.

[0029] The antireflective coating has two structures: single-layer coating and multi-layer coating. The antireflective coating in this embodiment adopts a single-layer coating structure. Specifically, the antireflective coating is a magnesium fluoride coating, and the thickness of the antireflective coating is 50-80 nm.

[0030] Both the bismuth trioxide coating and the magnesium fluoride coating are high-refractive-index thin films, which can improve the transmittance of the coated cover plate. Moreover, the refractive index of the bismuth trioxide coating is higher than that of the glass cover plate 1 and the magnesium fluoride coating. By using the bismuth trioxide coating as an intermediate layer between the glass cover plate 1 and the magnesium fluoride coating, a low-high-low refractive index change can be formed between the glass cover plate 1, the bismuth trioxide coating, and the magnesium fluoride coating, thereby achieving light interference and causing the reflected light to interfere with each other and cancel each other out, achieving the anti-reflection effect of a single-layer coating structure.

[0031] Of course, in addition to the anti-reflection coating, the optical coating 3 can also integrate other functional coatings, such as optical polarization coatings, which will not be listed here.

[0032] Example 2

[0033] As an optimization of Embodiment 1, in this embodiment, such as Figure 2 As shown, the coated cover plate also includes an organosilane layer 4, which covers the sides of the glass cover plate 1, the high wettability coating 2, and the optical coating 3.

[0034] The coating cover plate of this utility model protects the sides of the glass cover plate 1, the high wettability coating 2, and the optical coating 3 by coating the sides with the organosilane layer 4. At the same time, the organosilane layer 4 is a type of coupling agent, which can penetrate into the interface between the glass cover plate 1, the high wettability coating 2, and the optical coating 3 during long-term coating process to modify the interface, thereby further improving the adhesion between the three by utilizing its coupling effect.

[0035] In this embodiment, the organosilane layer 4 is a methacryloxysilane layer, and the thickness of the organosilane layer 4 is 10-20 nm.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them. Although the present utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present utility model, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the scope of the technical solutions of the present utility model.

Claims

1. A high-adhesion coated cover plate, comprising a glass cover plate and an optical coating, characterized in that, A highly wettable coating is provided between the glass cover and the optical coating, and the wettability between the highly wettable coating and the glass cover is higher than that between the optical coating and the glass cover.

2. The coated cover plate according to claim 1, characterized in that, The highly wettable coating is bonded to the glass cover plate by a covalent-ionic mixed chemical bond.

3. The coated cover plate according to claim 1 or 2, characterized in that, The highly wettable coating is a bismuth trioxide coating.

4. The coated cover plate according to claim 3, characterized in that, The thickness of the highly wettable coating is 100-120 nm.

5. The coated cover plate according to claim 1, characterized in that, The optical coating includes an anti-reflective coating.

6. The coated cover plate according to claim 5, characterized in that, The antireflective coating is a magnesium fluoride coating.

7. The coated cover plate according to claim 6, characterized in that, The thickness of the antireflective coating is 50-80 nm.

8. The coated cover plate according to claim 1, characterized in that, The coated cover plate also includes an organosilane layer, which covers the sides of the glass cover plate, the high wettability coating, and the optical coating.

9. The coated cover plate according to claim 8, characterized in that, The organosilane layer is a methacryloxysilane layer.

10. The coated cover plate according to claim 8, characterized in that, The thickness of the organosilane layer is 10-20 nm.

Images