Anti-reflection high-transmittance cover plate

Abstract

The utility model relates to an antireflection high-transmittance cover plate which comprises a cover plate body and an additional structure arranged on the front face of the cover plate body, and the additional structure comprises a first wear-resistant layer, a first refraction film layer and a second refraction film layer which are sequentially stacked from bottom to top. The first wear-resistant layer is a boron nitride film layer; the refractive index of the second refraction film layer is greater than that of the first refraction film layer; and a shading structure is arranged on at least one of the peripheral side surfaces perpendicular to the front surface and the back surface of the cover plate body. According to the additional structure, through the synergistic effect of the three film layers, the reflection loss of light rays on the surface of the cover plate can be remarkably reduced, the overall light transmittance is improved, and meanwhile the cover plate body is prevented from being scratched and abraded. The optical performance of the cover plate is optimized, and the uniform and transparent visual effect can be achieved. The durability and the corrosion resistance are obviously enhanced, and a high-performance solution is provided for electronic display screens, optical instruments, automobile display glass and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of display screen cover plates, in particular to an anti-reflection and high-transmittance cover plate. Background Art

[0002] Display cover plates are transparent lenses that protect the touch module and non-touch screen of a display. They are typically laminated to the outside of electronic displays. Cover plates are categorized by material, including glass, acrylic, and PC. They must exhibit high light transmittance, anti-reflection properties, hardness, and stability, adapting to various environmental conditions and resisting deformation or breakage to ensure the display's visual quality is not affected.

[0003] Display cover panels are widely used in various electronic products, such as mobile phones, tablets, laptops, and televisions. With the advancement of technology, display cover panels are constantly innovating and upgrading to meet the demands of higher-quality display effects and user experience. While traditional cover panels meet basic requirements for light transmittance, durability, and corrosion resistance, they often struggle in extreme environments or specific application scenarios. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the utility model provides an anti-reflection and high-transmittance cover plate, the purpose of which is to improve the transmittance and durability of the display screen cover plate, so as to improve the performance of the display screen.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] A high-transmittance anti-reflection cover plate includes a cover plate body and an additional structure arranged on the front side of the cover plate body, wherein the additional structure includes a first wear-resistant layer, a first refractive film layer, and a second refractive film layer stacked in sequence from bottom to top; the first wear-resistant layer is a boron nitride film layer; the refractive index of the second refractive film layer is greater than the refractive index of the first refractive film layer; and at least one of the four side surfaces perpendicular to the front and back surfaces of the cover plate body is provided with a light-shielding structure.

[0007] Further technical solutions are:

[0008] The thickness of the first wear-resistant layer is 50 to 100 nanometers.

[0009] The first refractive film layer is a magnesium fluoride film layer.

[0010] The thickness of the first refractive film layer is 100 to 200 nanometers.

[0011] The second refractive film layer is an ytterbium oxide film layer.

[0012] The thickness of the second refractive film layer is 50 to 100 nanometers.

[0013] The light-shielding structure includes an ink layer and a second wear-resistant layer, wherein the second wear-resistant layer is a titanium carbide layer coated on the ink layer.

[0014] The thickness of the second wear-resistant layer is 4 to 6 microns; the thickness of the ink layer is 4 to 6 microns.

[0015] The light-shielding structure covers the side surface of the cover body and the side surface of the additional structure at the same time.

[0016] The cover plate body is made of glass.

[0017] The beneficial effects of the utility model are as follows:

[0018] The additional structure of the cover plate body in this utility model is a three-layer structure stacked in sequence. The synergistic effect of these three layers significantly reduces light reflection loss on the cover plate surface, improving overall light transmittance while protecting the cover plate body from scratches and abrasion. This not only optimizes the cover plate's optical performance, promoting a uniform and transparent visual effect and enhancing the product's overall aesthetics, but also significantly enhances durability and corrosion resistance, providing a high-performance solution for electronic display screens, optical instruments, automotive display glass, and other fields.

[0019] The first and second refractive film layers of this utility model, through the gradient setting of the refractive index, not only reduce light reflection at the interface, but also improve light transmittance and reduce glare. Furthermore, by adjusting the thickness and specific refractive index values ​​of the two refractive film layers, specific optical effects can be achieved, such as enhancing the transmission of specific wavelengths, to meet the needs of a wider range of application scenarios.

[0020] The utility model provides a composite structure of ink and a second wear-resistant layer on the side of the cover plate, which can effectively prevent light leakage from the side of the cover plate and further improve the performance of the display screen.

[0021] Other features and advantages of the present invention will be described in the following description or will be understood through implementation of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic cross-sectional view of the stacking structure of an embodiment of the present utility model.

[0023] Figure 2 This is a schematic diagram of the top structure of an embodiment of the utility model.

[0024] In the figure: 1, second refractive film layer; 2, first refractive film layer; 3, first wear-resistant layer; 4, cover plate body; 5, ink layer; 6, second wear-resistant layer. DETAILED DESCRIPTION

[0025] The specific implementation of the present utility model is described below with reference to the accompanying drawings.

[0026] See also Figure 1 The anti-reflection and high-transmittance cover plate of this embodiment includes a cover plate body 4 and an additional structure provided on the front surface of the cover plate body 4. The additional structure includes a first wear-resistant layer 3, a first refractive film layer 2, and a second refractive film layer 1 stacked in sequence from bottom to top; the refractive index of the second refractive film layer 1 is greater than the refractive index of the first refractive film layer 2; at least one of the four side surfaces perpendicular to the front and back surfaces of the cover plate body 4 is provided with a shading structure.

[0027] As a specific implementation, the cover body 4 is made of glass.

[0028] In one specific embodiment, the first wear-resistant layer 3 is a boron nitride (BN) film. Boron nitride has excellent thermal and chemical stability, making it suitable as a base material, providing good adhesion and protecting the cover plate body from direct damage. Boron nitride also has a certain degree of hardness and wear resistance, which helps improve the overall durability of the cover plate. The boron nitride film layer can be deposited on the surface of the cover plate body 4 using a magnetron sputtering process.

[0029] As an optional implementation manner, the thickness of the first wear-resistant layer 3 is 50 to 100 nanometers.

[0030] In one specific embodiment, the first refractive film layer 2 is a magnesium fluoride (MgF2) film layer. Magnesium fluoride is a low-refractive-index material that can act as an antireflection film, reducing light reflection losses on the cover plate surface and improving light transmittance. Furthermore, magnesium fluoride exhibits excellent corrosion resistance and weather resistance.

[0031] Specifically, a magnesium fluoride film layer can be formed on the surface of the first wear-resistant layer 3 by using a magnetron sputtering process.

[0032] As an optional implementation, the thickness of the first refractive film layer 2 is 100-200 nanometers.

[0033] As a specific embodiment, the second refractive film layer 1 is a ytterbium oxide (Yb2O3) film layer. Ytterbium oxide is a high refractive index material, and its refractive index is higher than that of magnesium fluoride.

[0034] The high refractive index ytterbium oxide film layer and the low refractive index magnesium fluoride film layer form a double-layer refractive film structure, and the high refractive index layer and the low refractive index layer are distributed up and down, which has the following functions and advantages: First, a gradient structure with a gradually changing refractive index can be formed, so that light gradually adapts to the change in refractive index during the propagation between the film layers, thereby reducing the reflection of light on the interface, improving light transmittance and reducing glare, which is beneficial to improving the contrast of the displayed image and improving the visual experience. Second, the high refractive index film layer has higher hardness and wear resistance, better weather resistance and corrosion resistance, and can enhance the mechanical strength of the entire film layer. Protect the low refractive index film layer from environmental factors (such as humidity, temperature, etc.) and from external damage, thereby improving the stability and service life of the entire film layer. Similarly, the upper and lower stacked structure of the low refractive index magnesium fluoride film layer and the lower refractive index cover plate body also has the above advantages, which will not be repeated.

[0035] As an optional implementation, the thickness of the second refractive film layer 1 is 50 to 100 nanometers.

[0036] Specifically, a magnetron sputtering process may be used to form an ytterbium oxide film layer on the surface of the magnesium fluoride film layer.

[0037] The light-shielding structure of this embodiment includes an ink layer 5 and a second wear-resistant layer 6 . The second wear-resistant layer 6 is a titanium carbide layer coated on the ink layer 5 .

[0038] The ink layer 5 is specifically black light-shielding ink, which can be provided on the side of the cover body 4 by using a silk-screen printing process. The ink provided on the side can further prevent light leakage from the side.

[0039] The titanium carbide layer can prevent the ink layer 5 from being scratched, thereby protecting the ink.

[0040] As an optional implementation, the titanium carbide layer is provided on the ink layer 5 by coating.

[0041] As a specific implementation manner, the thickness of the second wear-resistant layer 6 is 4 to 6 microns; the thickness of the ink layer 5 is 4 to 6 microns.

[0042] See also Figure 2 As a preferred embodiment, the shading structure covers the side of the cover body 4 and the side of the additional structure at the same time.

[0043] In summary, this embodiment provides an additional structure of a composite coating layer on the cover body. The bottom layer is boron nitride, which has excellent thermal and chemical stability, enhances the adhesion of the coating layer to the glass substrate, and provides good wear resistance and protection. The middle layer is magnesium fluoride, which acts as an anti-reflection film. Its low refractive index reduces light reflection and significantly improves light transmittance. At the same time, the corrosion resistance and weather resistance of magnesium fluoride also provide additional protection for the overall coating layer. The top layer is ytterbium oxide, whose high refractive index properties form a multilayer film structure with magnesium fluoride. By precisely controlling the thickness and refractive index of the two layers of material, complex optical effects can be customized, such as enhanced transmission or reflection in specific wavelengths, to meet the needs of more application scenarios. The ink and silicon carbide layers on the sides prevent light leakage from the sides, which helps to further improve the display effect.

[0044] Those skilled in the art will understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An anti-reflective and high-transmittance cover plate, characterized in that: The invention comprises a cover plate body (4) and an additional structure provided on the front surface of the cover plate body (4), wherein the additional structure comprises a first wear-resistant layer (3), a first refractive film layer (2) and a second refractive film layer (1) stacked in sequence from bottom to top; the first wear-resistant layer (3) is a boron nitride film layer; the refractive index of the second refractive film layer (1) is greater than the refractive index of the first refractive film layer (2); and at least one of the four side surfaces perpendicular to the front and back surfaces of the cover plate body (4) is provided with a light-shielding structure.

2. The anti-reflection and high-transmittance cover plate according to claim 1, characterized in that: The thickness of the first wear-resistant layer (3) is 50 to 100 nanometers.

3. The anti-reflection and high-transmittance cover plate according to claim 1, wherein: The first refractive film layer (2) is a magnesium fluoride film layer.

4. The anti-reflection and high-transmittance cover plate according to claim 1, wherein: The thickness of the first refractive film layer (2) is 100 to 200 nanometers.

5. The anti-reflection and high-transmittance cover plate according to claim 1, wherein: The second refractive film layer (1) is an ytterbium oxide film layer.

6. The anti-reflection and high-transmittance cover plate according to claim 1, wherein: The thickness of the second refractive film layer (1) is 50 to 100 nanometers.

7. The anti-reflection and high-transmittance cover plate according to claim 1, wherein: The light-shielding structure comprises an ink layer (5) and a second wear-resistant layer (6); the second wear-resistant layer (6) is a titanium carbide layer, which is coated on the ink layer (5).

8. The anti-reflection and high-transmittance cover plate according to claim 7, characterized in that: The thickness of the second wear-resistant layer (6) is 4 to 6 microns; the thickness of the ink layer (5) is 4 to 6 microns.

9. The anti-reflection and high-transmittance cover plate according to claim 1, wherein: The shading structure simultaneously covers the side surface of the cover plate body (4) and the side surface of the additional structure.

10. The anti-reflection and high-transmittance cover plate according to claim 1, wherein: The cover plate body (4) is made of glass.

Images