Composite film-coated cover plate with light filtering property and display device

Abstract

The utility model relates to the technical field of glass substrate cover plates, and discloses a composite coating film cover plate with light filtering performance and a display device, which comprise a glass substrate, a light filtering layer and a protective layer, the filter layer is arranged on the surface of the glass substrate; the light filtering layer comprises a first light filtering layer and a second light filtering layer, the first light filtering layer has optical transparency and chemical stability, and the second light filtering layer is used for filtering light of a certain wave band; and the protective layer is arranged on the surface of the filter layer. According to the glass substrate cover plate, the filtering performance of the glass substrate cover plate is effectively improved, and the reflectivity of light is reduced, so that the impression degree of a user using a screen of electronic equipment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of glass substrate touch cover plate, especially to a kind of composite coating cover plate with light filtering and display device. BACKGROUND

[0002] With the continuous development of science and technology, electronic equipment gradually increases, and glass substrate cover plate is increasingly widely used in the field of electronic equipment shell and optical instrument display screen, for protecting the surface of electronic device display screen by covering glass substrate cover plate.

[0003] In the related art, the existing glass substrate cover plate has poor light filtering and high light reflectivity, which causes the user of electronic device to have a poor visual experience when using the electronic device. SUMMARY

[0004] To solve the problems in the prior art, the utility model provides a kind of composite coating cover plate with light filtering and display device.

[0005] On the one hand, the utility model provides a kind of composite coating cover plate with light filtering, which adopts the following technical scheme:

[0006] A kind of composite coating cover plate with light filtering, comprising the light filtering layer, is arranged on the surface of the glass substrate;The light filtering layer includes first light filtering layer and second light filtering layer, the first light filtering layer has optical transparency and chemical stability, and the second light filtering layer is used to filter light of a certain waveband;The protective layer is arranged on the surface of the light filtering layer.

[0007] Optionally, the first light filtering layer mainly includes scandium compound;The second light filtering layer mainly includes silicon compound.

[0008] Optionally, it further includes wear-resistant layer;The wear-resistant layer is arranged between the second light filtering layer and the glass substrate, and at least includes nitrogen silicon compound.

[0009] Optionally, the protective layer is polytetrafluoroethylene, and the thickness is between 2 microns and 5 microns.

[0010] Optionally, the first light filtering layer is scandium oxide, and the thickness is between 20 nanometers and 120 nanometers.

[0011] Optionally, the second light filtering layer is silicon dioxide, and the thickness is between 150 nanometers and 550 nanometers.

[0012] Optionally, the wear-resistant layer is silicon nitride, and the thickness is between 20 nanometers and 120 nanometers.

[0013] Optionally, the maximum surface area of the glass substrate is greater than the maximum surface area of the wear-resistant layer, the maximum surface area of the wear-resistant layer is greater than the maximum surface area of the second filter layer, the maximum surface area of the second filter layer is greater than the maximum surface area of the first filter layer, and the maximum surface area of the first filter layer is greater than the maximum surface area of the protective layer.

[0014] Optionally, the difference between the maximum surface area of the glass substrate and the maximum surface area of the wear-resistant layer is not more than 1 square millimeter, the difference between the maximum surface area of the wear-resistant layer and the maximum surface area of the second filter layer is not more than 1 square millimeter, the difference between the maximum surface area of the second filter layer and the maximum surface area of the first filter layer is not more than 1 square millimeter, and the difference between the maximum surface area of the first filter layer and the maximum surface area of the protective layer is not more than 1 square millimeter.

[0015] In another aspect, the utility model provides a kind of display device, including the composite film-coated cover plate with light filtering property.

[0016] The above any technical solution of the utility model has at least one of the following beneficial effects:

[0017] 1. The filter layer and the protective layer are arranged on the surface of the glass substrate, the protective layer can well protect the glass substrate, reduce the wear degree of the glass substrate, thereby prolonging the service life of the film-coated cover plate.

[0018] 2. The material with scandium compound is used as the filter layer, the scandium compound has high refractive index, which can effectively improve the optical performance of the film-coated cover plate and achieve the effect of light filtering, thereby improving the user's sense of perception.

[0019] 3. The material with silicide is used as the second filter layer, the silicide has good optical transparency and chemical stability, and can be used as an optical enhancement layer to effectively improve the light transmittance and scratch resistance of the film-coated cover plate.

[0020] 4. The wear-resistant layer made of nitrogen-silicon compound material has excellent hardness, wear resistance and chemical stability, and can be used as a wear-resistant layer to protect the filter layer from physical and chemical damage, thereby prolonging the service life of the film-coated cover plate.

[0021] 5. The thickness of the protective layer is set to be between 2 microns and 5 microns, which effectively balances the protection ability and production cost of the protective layer, and reduces the production cost under the premise of having protection effect.

[0022] 6. To avoid mutual sliding between multiple layers, adjacent two layers need to be connected by adhesive, so that the above multiple layers form a firm whole, achieving the effect of multiple layers being combined into one film-coated cover plate. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a sectional view of the composite coated cover plate with light filtering property.

[0024] Figure 2 is an external contour front view of the composite coated cover plate with light filtering property.

[0025] The reference signs are as follows: 1, protective layer; 2, light filtering layer; 3, first light filtering layer; 4, second light filtering layer; 5, wear-resistant layer; 6, glass substrate. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0027] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0028] Embodiment 1

[0029] The present application discloses a light filtering coated cover plate. Referring to Figure 1 , comprising a glass substrate 6, a protective layer 1, a light filtering layer 2 and a wear-resistant layer 5.

[0030] Specifically, the glass substrate 6 has a main protection function, covers the outside of the screen of the electronic device, can transmit light, is convenient for the user to view, and the glass substrate 6 has a certain hardness and can completely fit the screen of the electronic device. The protective layer 1 is arranged on the surface of the glass substrate 6; since the glass substrate 6 has the property of being easily abraded, scratches appear after abrasion, which affects the viewing effect of the user watching the screen, so a protective layer 1 with high sliding performance needs to be arranged outside the glass substrate 6.

[0031] In this embodiment, the protective layer 1 is made of polytetrafluoroethylene (PTFE), which has very low friction coefficient and excellent chemical stability, can reduce the loss caused by the friction between the coated cover plate and other objects, improve the sliding performance, and protect the internal light filtering layer 2 from chemical corrosion. Thus, the effect of protecting the glass substrate 6 from scratches after abrasion is achieved. The service life of the coated cover plate is effectively increased.

[0032] In addition, the thickness of the coated cover plate is higher (i.e. the thickness of the glass substrate 6 and the protective layer 1 is higher), which increases the overall material cost and reduces the light transmission performance of the coated cover plate. However, the thickness of the coated cover plate is lower, which results in poor protection of the electronic device by the coated cover plate. Therefore, the thickness of the coated cover plate needs to be controlled. Since the glass substrate 6 is the main structure for protecting the electronic device screen from being damaged by impact, the thickness of the glass substrate 6 is controlled between 1 mm and 2 mm, so that the coated cover plate has strong protection and the material cost is the lowest. The protective layer 1 is only used to protect the glass substrate 6 from being abraded, so it does not have a hardness requirement and does not need to be set too thick. Therefore, the thickness of the protective layer 1 is set between 2 μm and 5 μm, which effectively reduces the abrasion degree of the glass substrate 6 and increases the service life of the coated cover plate.

[0033] Preferably, in the embodiment, the light filtering layer 2 is arranged between the protective layer 1 and the glass substrate 6 and includes at least scandium compounds. The scandium compounds have high refractive index, which can effectively improve the optical performance of the coated cover plate and achieve the light filtering effect, thereby improving the user's visual perception.

[0034] Preferably, in the embodiment, the light filtering layer 2 includes a first light filtering layer 3 and a second light filtering layer 4. The first light filtering layer 3 is arranged between the protective layer 1 and the second light filtering layer 4. The first light filtering layer 3 is scandium compounds, specifically scandium oxide (Sc2O3), and the thickness is between 20 nm and 120 nm. The second light filtering layer 4 is arranged between the first light filtering layer 3 and the glass substrate 6. The second light filtering layer 4 is silicon compounds, specifically silicon dioxide (SiO2), and the thickness is between 150 nm and 550 nm.

[0035] The first light filtering layer 3 adopts scandium oxide (Sc2O3), which has high refractive index and can effectively improve the optical performance of the coated cover plate and achieve the light filtering effect. Based on the reasons for controlling the thickness of the coated cover plate, the first light filtering layer 3 has the function of achieving better optical performance. Therefore, the thickness of the first light filtering layer 3 is lower than the thickness of the glass substrate 6 and the protective layer 1. The thickness of the first light filtering layer 3 is set between 20 nm and 120 nm, which can well control the thickness of the coated cover plate.

[0036] In order to make the coated cover plate achieve higher light transmission effect after filtering, the second light filtering layer 4 composed of silicon dioxide (SiO2) is arranged between the first light filtering layer 3 and the glass substrate 6. Silicon dioxide (SiO2) has good optical transparency and chemical stability, which can be used as an optical enhancement layer to effectively improve the light transmission and scratch resistance of the coated cover plate. In addition, based on the reasons for controlling the thickness of the coated cover plate, the thickness of the second light filtering layer 4 is set between 150 nm and 550 nm, which can well control the thickness of the coated cover plate.

[0037] In this preferred embodiment, the wear-resistant layer 5 is disposed between the second filter layer 4 and the glass substrate 6, and includes at least a silicon nitride compound, specifically silicon nitride (Si3N4), with a thickness between 20 nanometers and 120 nanometers.

[0038] Because the glass substrate 6 has high sliding performance, the filter layer 2 is easily worn. To prevent damage to the filter layer 2 due to the high sliding performance between the filter layer 2 and the glass substrate 6, a wear-resistant layer 5 is provided between the glass substrate 6 and the filter layer 2. The wear-resistant layer 5 is made of silicon nitride (Si3N4). Silicon nitride (Si3N4) has excellent hardness, wear resistance, and chemical stability, and can be used as the wear-resistant layer 5 to protect the glass filter layer 2 from physical and chemical damage, thereby improving the service life of the coated cover plate. In addition, because the thickness of the coated cover plate needs to be controlled, the thickness of the wear-resistant layer 5 is set between 20 nanometers and 120 nanometers, which can effectively control the thickness of the coated cover plate.

[0039] In this preferred embodiment, the glass substrate 6, the wear-resistant layer 5, the second filter layer 4, the first filter layer 3, and the protective layer 1 are sequentially connected by an adhesive.

[0040] Specifically, to prevent slippage between multiple layers, adjacent layers need to be connected with adhesive to form a solid whole among the multiple layers (wear-resistant layer 5, second filter layer 4, first filter layer 3 and protective layer 1), so as to achieve the effect of multiple layers forming a single coated cover plate.

[0041] In this preferred embodiment, refer to... Figure 2 The maximum surface area of ​​the glass substrate 6 is greater than the maximum surface area of ​​the wear-resistant layer 5, and the difference does not exceed 1 square millimeter. The maximum surface area of ​​the wear-resistant layer 5 is greater than the maximum surface area of ​​the second filter layer 4, and the difference does not exceed 1 square millimeter. The maximum surface area of ​​the second filter layer 4 is greater than the maximum surface area of ​​the first filter layer 3, and the difference does not exceed 1 square millimeter. The maximum surface area of ​​the first filter layer 3 is greater than the maximum surface area of ​​the protective layer 1, and the difference does not exceed 1 square millimeter.

[0042] The glass substrate 6, the wear-resistant layer 5, the second filter layer 4, the first filter layer 3 and the protective layer 1 are adhered together by an adhesive to form a coated cover plate thicker than any one of the layers, which increases the risk of explosion at the corners of the glass substrate 6. To reduce the risk of explosion at the corners of the glass substrate 6, the corners of the side, away from the display screen of the electronic device, of the glass substrate 6 are provided in a circular arc shape, and the diameter of the circular arc is less than 1 mm, so that the circular arc at the corners of the coated cover plate does not affect the visual effect of watching the screen. In addition, to adapt to the circular arc at the corners of the glass substrate 6, the maximum surface area of the wear-resistant layer 5, the second filter layer 4, the first filter layer 3 and the protective layer 1 is sequentially reduced, so that the maximum surface area of the layer close to the glass substrate 6 is greater than the maximum surface area of the layer away from the glass substrate 6 (i.e., the maximum surface area of the wear-resistant layer 5 is greater than the maximum surface area of the second filter layer 4), thereby reducing the risk of explosion of the coated cover plate.

[0043] In addition, to reduce the risk of explosion of the glass substrate 6 while ensuring the aesthetics of the coated cover plate, the maximum surface area of the adjacent two layers is not more than 1 square millimeter, and the edges of the coated cover plate are arc-shaped, which is more beautiful.

[0044] Embodiment 2

[0045] The display device provided by the utility model has the advantages of high wear resistance, high optical transparency, high scratch resistance, high optical performance, high sliding performance, high chemical stability, high filter effect, high aesthetics, high safety and the like.

[0046] The implementation principle of the filter-coated cover plate and the display device is as follows: the outer side of the glass substrate 6 is covered with the first filter layer 3 and the second filter layer 4, and the main component of the first filter layer 3 is scandium oxide (Sc2O3). Since scandium oxide (Sc2O3) has a high refractive index, it can effectively improve the optical performance of the coated cover plate and achieve the filter effect.

[0047] The composite coating layer of silicon nitride (Si3N4), silicon dioxide (SiO2), scandium oxide (Sc2O3) and polytetrafluoroethylene (PTFE) is formed on the surface of the glass substrate 6 in sequence. The silicon nitride (Si3N4) layer serves as a bottom layer (wear-resistant layer 5) to provide excellent wear resistance and chemical stability; the silicon dioxide (SiO2) layer serves as an intermediate layer (second filter layer 4) to enhance the optical transparency and scratch resistance of the glass substrate 6; the scandium oxide (Sc2O3) layer serves as a functional layer (first filter layer 3) to improve the optical performance of the coated cover plate by utilizing its electrical and optical properties; finally, the polytetrafluoroethylene (PTFE) layer serves as a top layer (protective layer 1) to provide a very low friction coefficient and excellent chemical stability, reduce the friction between the cover plate and other objects, and improve the sliding performance. Through the above layered structure, the performance of the coated cover plate is effectively improved to meet the high-performance requirements in various application scenarios and improve the user's sense of experience.

[0048] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A composite coated cover plate having light filtering properties, characterized in that, The glass substrate (6), the filter layer (2) and the protective layer (1); The filter layer (2) is arranged on the surface of the glass substrate; the filter layer comprises a first filter layer (3) and a second filter layer (4), the first filter layer (3) has optical transparency and chemical stability, and the second filter layer (4) is used for filtering light of a certain waveband; The protective layer (1) is arranged on the surface of the filter layer (2).

2. The composite coated cover plate with filterability according to claim 1, characterized in that, The main component of the first filter layer (3) comprises scandium compound; The main component of the second filter layer (4) comprises silicon compound.

3. The composite coated cover plate of claim 2, wherein: Further comprising a wear-resistant layer (5); The wear-resistant layer (5) is arranged between the second filter layer (4) and the glass substrate (6) and comprises at least nitrogen silicon compound.

4. The composite coated cover plate of claim 1, wherein: The protective layer (1) is polytetrafluoroethylene, and the thickness is between 2 microns and 5 microns.

5. The composite coated cover plate of claim 2, wherein: The first filter layer (3) is scandium oxide, and the thickness is between 20 nanometers and 120 nanometers.

6. The composite coated cover plate of claim 2, wherein: The second filter layer (4) is silicon dioxide, and the thickness is between 150 nanometers and 550 nanometers.

7. The composite coated cover plate of claim 3, wherein: The wear-resistant layer (5) is silicon nitride, and the thickness is between 20 nanometers and 120 nanometers.

8. The composite coated cover plate of claim 3, wherein: The maximum surface area of the glass substrate (6) is greater than that of the wear-resistant layer (5), the maximum surface area of the wear-resistant layer (5) is greater than that of the second filter layer (4), the maximum surface area of the second filter layer (4) is greater than that of the first filter layer (3), and the maximum surface area of the first filter layer (3) is greater than that of the protective layer (1).

9. The composite coated cover plate of claim 8, wherein: The difference between the maximum surface area of the glass substrate (6) and the maximum surface area of the wear-resistant layer (5) is not more than 1 square millimeter, the difference between the maximum surface area of the wear-resistant layer (5) and the maximum surface area of the second filter layer (4) is not more than 1 square millimeter, the difference between the maximum surface area of the second filter layer (4) and the maximum surface area of the first filter layer (3) is not more than 1 square millimeter, and the difference between the maximum surface area of the first filter layer (3) and the maximum surface area of the protective layer (1) is not more than 1 square millimeter.

10. A display device, characterized by comprising: The composite coated cover plate with filterability according to any one of claims 1-9.

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