Coated glass cover plate

Abstract

The utility model discloses a coated glass cover plate which comprises a substrate layer, a polyurethane resin layer, a niobium nitride layer and a boron carbide layer, the polyurethane resin layer, the niobium nitride layer and the boron carbide layer are sequentially arranged on the surface of the substrate layer from bottom to top in the height direction of the substrate layer; wherein the niobium nitride layer and the boron carbide layer are sequentially arranged on the surface of the substrate layer, the coating layer is formed by combining the niobium nitride layer and the boron carbide layer, and the polyurethane resin layer is used for connecting the coating layer and the substrate layer. The wear resistance, corrosion resistance and hardness of the substrate layer, namely the glass cover plate, are improved, good optical performance of the glass cover plate can be kept, and the glass cover plate has important practical application value.

Description

TECHNICAL FIELD

[0001] The utility model relates to display field especially involves a kind of coated glass cover plate. BACKGROUND

[0002] With the continuous progress of science and technology, glass cover plate is increasingly widely used in electronic display, solar cell, optical instrument and other fields. For example, mobile phone, in order to protect the screen, prevent the screen from being scratched and affect the display effect, the current touch screen mobile phone generally has a glass cover plate attached to the screen of the mobile phone.

[0003] Typically, the patent document with the application number CN202210681862.X discloses a glass cover plate preparation process and glass cover plate, which points out in the background art that bubbles are easily produced after the glass substrate is attached to the film substrate. To solve this problem, the film substrate is pre-baked to ensure the stability of the film substrate size. The film substrate with multiple black ink layers is subjected to laser engraving to cut a circular exhaust groove on the inner edge of the film substrate, which can effectively reduce the bubble defect rate when the film substrate is attached to the glass substrate, and improve the yield of the glass cover plate product. According to the structural characteristics of the glass substrate with low middle and high edge ink, the main ink layer and the cover bottom ink layer are printed on the glass cover plate substrate, and the CD pattern light oil layer and the mirror silver ink layer are printed between the glass cover plate substrate and the cover bottom ink layer, and the NCVM color film is printed on the surface of the main ink layer and the CD pattern light oil layer, which can make the CD pattern on the glass cover plate substrate brighter and clearer, and the appearance of the glass cover plate product more beautiful.

[0004] Although the technical solution provided in the above patent document solves the problem of bubbles produced after the glass substrate is attached to the film substrate, there are still limitations for the glass cover plate body in actual use, for example,

[0005] The current glass cover plate body is ordinary aluminosilicate glass, which has limitations in hardness, wear resistance, corrosion resistance and anti-reflection performance during use, and cannot meet the needs of high-end applications. Therefore, in order to solve this problem, sometimes a coating layer is selected in the prior art, but this affects the transparency (for example, when there are many coating layers, the adhesion between the coating layer and the glass cover plate decreases, so there is a chance of gap between the coating layer and the glass cover plate, and the number of refractions in the gap area is large when light is irradiated, affecting the penetration of light).

[0006] Therefore, how to solve the above-mentioned problems in the prior art has become the subject to be studied and solved by the utility model. UTILITY MODEL CONTENT

[0007] Based on this, it is necessary to aim at the background technology proposed in the above that the current glass cover plate body is ordinary aluminosilicate glass, which has limitations in hardness, wear resistance, corrosion resistance and anti-reflection performance during use, and cannot meet the needs of high-end applications, therefore, in order to solve this problem in the prior art, sometimes a coating layer is selected, but this affects the transparency (for example, when there are many coating layers, the adhesion between the coating layer and the glass cover plate is reduced, so that there is a probability of gap between the coating layer and the glass cover plate, and when light is irradiated, the number of refractions in the gap area is large, affecting the penetration of light). Technical problem of a coated glass cover plate is provided.

[0008] In order to solve the above technical problems, the utility model adopts the technical scheme as follows:

[0009] A kind of coated glass cover plate, including substrate layer, polyurethane resin layer, niobium nitride layer and boron carbide layer;

[0010] On the surface of the substrate layer, along the height direction of the substrate layer, the polyurethane resin layer, the niobium nitride layer and the boron carbide layer are sequentially arranged from bottom to top;

[0011] Wherein, the niobium nitride layer and the boron carbide layer combination constitute the coating layer, and the polyurethane resin layer is used to connect the coating layer and the substrate layer.

[0012] Further, the thickness of the polyurethane resin layer is greater than the niobium nitride layer and the boron carbide layer.

[0013] Further, the niobium nitride layer and the boron carbide layer are formed on the surface of the substrate layer by coating.

[0014] Further, the edges of the substrate layer, the polyurethane resin layer, the niobium nitride layer and the boron carbide layer are flush with each other.

[0015] Further, the edge of the coating layer is provided with a protective part for wrapping the edge of the coating layer.

[0016] Further, the protective part is a ring cover arranged around the coating layer.

[0017] Further, one end face of the ring cover is flush with the upper surface of the boron carbide layer, and the other end face is flush with the lower surface of the polyurethane resin layer.

[0018] Further, the surface of the substrate layer is provided with a recessed groove, and the polyurethane resin layer, the niobium nitride layer and the boron carbide layer are sequentially arranged from bottom to top in the recessed groove.

[0019] Further, the protective part includes a first edge part and a second edge part.

[0020] The first edge part is arranged around the niobium nitride layer, and the lower end of the first edge part is flush with the lower surface of the polyurethane resin layer, and the upper end is flush with the upper surface of the niobium nitride layer.

[0021] The second edge part is arranged around the first edge part, and the upper end of the second edge part is flush with the upper surface of the boron carbide layer, and the lower end is connected with the side surface of the substrate layer.

[0022] Further, the second edge part is integrally formed with the boron carbide layer.

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] In the utility model, the polyurethane resin layer, the niobium nitride layer and the boron carbide layer are arranged on the surface of the substrate layer in sequence, the wear resistance, corrosion resistance and hardness of the substrate layer, i.e. glass cover plate, are improved, the good optical performance of the substrate layer is also maintained, and the utility model has important practical application value, specifically, the bottom layer adopts the polyurethane resin layer, the close combination of the coating layer and the glass substrate is ensured through the good adhesion of the polyurethane resin layer, the middle layer adopts the NbN niobium nitride layer, the scratch resistance and wear resistance of the glass cover plate are significantly improved through the high hardness and wear resistance of the NbN niobium nitride layer, and the top layer adopts the boron carbide layer, the wear resistance and corrosion resistance of the glass cover plate are further enhanced through the high hardness and chemical stability of the boron carbide layer.Through the layered structure design, the composite coating layer not only has excellent physical and chemical properties, but also maintains the high transparency to visible light, and the optical performance of the glass cover plate is not affected.In addition, the technology also allows adjusting the thickness and material combination of each layer to realize different functional requirements, such as improving the hardness, wear resistance and corrosion resistance, so as to meet the performance requirements of the glass cover plate in different fields. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The boron carbide layer is provided with a top view structure schematic diagram;

[0026] Figure 2 The glass cover plate is provided with a cross-sectional structure schematic diagram;

[0027] Figure 3 The ring cover structure schematic diagram is provided for the utility model;

[0028] Figure 4 The recessed groove structure schematic diagram is provided for the utility model;

[0029] Figure 5 The first edge part structure schematic diagram is provided for the utility model.

[0030] Markings in the figure are as follows:

[0031] 1, base layer; 2, polyurethane resin layer; 3, niobium nitride layer; 4, boron carbide layer; 5, protection part; 6, ring cover; 7, recessed groove; 8, first edge part; 9, second edge part. DETAILED DESCRIPTION

[0032] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present application.

[0033] As described in the background, the current glass cover plate body is ordinary aluminosilicate glass, which has limitations in hardness, wear resistance, corrosion resistance and anti-reflection performance during use, and cannot meet the needs of high-end applications. Therefore, in order to solve this problem, sometimes a coating layer is selected in the prior art, but this affects the transparency (for example, when there are many coating layers, the adhesion between the coating layer and the glass cover plate is reduced, so that there is a probability of gap between the coating layer and the glass cover plate, and when light is irradiated, the number of refractions in the gap area is large, affecting the penetration of light).

[0034] In order to solve this technical problem, the present application provides a coated glass cover plate.

[0035] Specifically, please refer to Figures 1-5 The coated glass cover plate comprises a base layer 1, a polyurethane resin layer 2, a niobium nitride layer 3 and a boron carbide layer 4. On the surface of the base layer 1, along the height direction of the base layer 1, the polyurethane resin layer 2, the niobium nitride layer 3 and the boron carbide layer 4 are arranged in order from bottom to top. Wherein, the niobium nitride layer 3 and the boron carbide layer 4 combine to form the coating layer, and the polyurethane resin layer 2 is used to connect the coating layer and the base layer 1.

[0036] The utility model discloses a multilayer coating glass cover plate, which comprises a substrate layer 1, a polyurethane resin layer 2, a niobium nitride layer 3 and a boron carbide layer 4. The polyurethane resin layer 2, the niobium nitride layer 3 and the boron carbide layer 4 are sequentially arranged on the surface of the substrate layer 1. The polyurethane resin layer 2 is used as the bottom layer, the niobium nitride layer 3 is used as the middle layer, and the boron carbide layer 4 is used as the top layer. The polyurethane resin layer 2 has good adhesion, which ensures the close combination of the coating layer and the glass substrate. The niobium nitride layer 3 has high hardness and high wear resistance, which significantly improves the scratch resistance and wear resistance of the glass cover plate. The boron carbide layer 4 has extremely high hardness and chemical stability, which further enhances the wear resistance and corrosion resistance of the glass cover plate. Through the layered structure design, the composite coating layer not only has excellent physical and chemical properties, but also maintains high transparency to visible light, which does not affect the optical performance of the glass cover plate. In addition, the technology allows adjusting the thickness and material combination of each layer to achieve different functional requirements, such as improving hardness, wear resistance and corrosion resistance, thereby meeting the performance requirements of glass cover plates in different fields.

[0037] In order to better understand the technical scheme of the present application, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings.

[0038] It should be noted that the embodiments and features and technical solutions in the embodiments in the present application can be combined with each other without conflict.

[0039] It should be noted that: similar labels and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0040] A coating glass cover plate, comprising a substrate layer 1, a polyurethane resin layer 2, a niobium nitride layer 3 and a boron carbide layer 4. On the surface of the substrate layer 1, the polyurethane resin layer 2, the niobium nitride layer 3 and the boron carbide layer 4 are sequentially arranged along the height direction of the substrate layer 1. The niobium nitride layer 3 and the boron carbide layer 4 are combined to form the coating layer, and the polyurethane resin layer 2 is used to connect the coating layer and the substrate layer 1.

[0041] The utility model discloses a multilayer composite coating structure for glass cover plate, which comprises a substrate layer 1, a polyurethane resin layer 2, a niobium nitride layer 3 and a boron carbide layer 4 arranged on the substrate layer 1 in sequence.

[0042] In some embodiments, the thickness of the polyurethane resin layer 2 is greater than the thickness of the niobium nitride layer 3 and the boron carbide layer 4.

[0043] In some embodiments, the niobium nitride layer 3 and the boron carbide layer 4 are formed on the surface of the substrate layer 1 by plating.

[0044] In some embodiments, the edges of the substrate layer 1, the polyurethane resin layer 2, the niobium nitride layer 3 and the boron carbide layer 4 are flush with each other.

[0045] The thickness of the polyurethane resin layer 2 is 5-7 microns. The polyurethane resin has good adhesion, which can ensure the close combination of the coating layer and the glass substrate and prevent peeling. The thickness of the niobium nitride layer 3 is about 1-2 microns. NbN nitride niobium is a high-hardness and high-wear-resistant material, which can significantly improve the scratch resistance and wear resistance of the glass cover plate. The thickness of the boron carbide layer 4 is about 1-2 microns. Boron carbide has extremely high hardness and chemical stability, which can further enhance the wear resistance and corrosion resistance of the glass cover plate.

[0046] In some embodiments, the edge of the coating layer is provided with a protective part 5 for wrapping the edge of the coating layer.

[0047] In some embodiments, the protective part 5 is a ring cover 6 arranged around the coating layer.

[0048] In some embodiments, one end face of the ring cover 6 is flush with the upper surface of the boron carbide layer 4, and the other end face is flush with the lower surface of the polyurethane resin layer 2.

[0049] In some embodiments, the surface of the substrate layer 1 is provided with a recessed groove 7, and the polyurethane resin layer 2, the niobium nitride layer 3 and the boron carbide layer 4 are sequentially arranged from bottom to top in the recessed groove 7.

[0050] Since the coating layer is formed by coating between the substrate layer 1 and the coating layer, the adhesion ability of different substrates (such as metal, ceramic, glass, etc.) is different. At the same time, the cleanliness and roughness of the surface of the substrate will also affect the adhesion effect. In order to prevent the adhesion from being affected, causing the edges of the substrate layer 1 and the edges of the coating layer to have tiny defects or impurities, the ring cover 6 is wrapped or the recessed groove 7 is isolated to prevent it.

[0051] The wrapping of the ring cover 6 can play a role in active isolation, but this requires separate coating of the edges of the coating layer, which is difficult to operate, and also affects the thickness of the coating layer. Therefore, the isolation needs to be strengthened when forming the ring cover 6.

[0052] The recessed groove 7 does not need to worry about the operation difficulty and the thickness of the coating layer, but the surface of the substrate layer 1 is provided with a recessed groove 7, which needs to prevent the edges of the substrate layer 1 from being cracked.

[0053] In some embodiments, the protective part 5 includes a first edge part 8 and a second edge part 9.

[0054] The first edge part 8 surrounds the niobium nitride layer 3, and the lower end of the first edge part 8 is flush with the lower surface of the polyurethane resin layer 2, and the upper end is flush with the upper surface of the niobium nitride layer 3.

[0055] The second edge part 9 surrounds the first edge part 8, and the upper end of the second edge part 9 is flush with the upper surface of the boron carbide layer 4, and the lower end is connected with the side surface of the substrate layer 1.

[0056] In some embodiments, the second edge part 9 is integrally formed with the boron carbide layer 4.

[0057] The first edge part 8 exists to increase the connection effect of the second edge part 9 and the edge of the niobium nitride layer 3.

[0058] The existence of the second edge part 9 not only can prevent the generation of defects in the edge of the coating layer, but also can wrap the edge of the coating layer.

[0059] The use process of the coated glass cover plate is as follows: the polyurethane resin layer 2, the niobium nitride layer 3 and the boron carbide layer 4 are sequentially arranged on the surface of the base layer 1, the wear resistance, corrosion resistance and hardness of the base layer 1, i.e. the glass cover plate, are improved, the good optical performance of the glass cover plate is maintained, and the coated glass cover plate has important practical application value; specifically, the bottom layer is the polyurethane resin layer 2, the close combination of the coating layer and the glass substrate is ensured through the good adhesion of the polyurethane resin layer 2; the middle layer is the NbN niobium nitride layer 3, the scratch resistance and wear resistance of the glass cover plate are significantly improved through the high hardness and high wear resistance of the NbN niobium nitride layer 3; the top layer is the boron carbide layer 4, and the wear resistance and corrosion resistance of the glass cover plate are further enhanced through the high hardness and chemical stability of the boron carbide layer 4. Through the layered structure design, the composite coating layer not only has excellent physical and chemical properties, but also maintains high transparency to visible light, and does not affect the optical performance of the glass cover plate. In addition, the technology also allows adjusting the thickness and material combination of each layer to realize different functional requirements, such as improving hardness, wear resistance, corrosion resistance, etc., so as to meet the performance requirements of glass cover plates in different fields.

[0060] In the utility model, unless there is definite stipulation and limitation, the terms "mount", "link", "connect", "fix" and so on should be understood in broad sense, for example, can be fixed connection, also can be detachable connection, or be integrated, can be mechanical connection, also can be electric connection or communicate with each other, can be direct connection, also can be indirect connection through intermediate medium, can be the communication or interaction of two elements, unless there is definite limitation. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0061] Obviously, the above-described embodiments are only a part of the embodiments of the utility model, and not all the embodiments, and the preferred embodiments of the utility model are given in the drawings, but do not limit the patent range of the utility model. The utility model can be realized in many different forms, and contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the foregoing embodiments, for ordinary skilled in the art, the technical scheme recorded in the foregoing each specific embodiment can be modified, or some technical features can be replaced equivalently. Any equivalent structure made by using the contents of the utility model specification and drawings, direct or indirect application in other related technical fields, are also within the patent protection range of the utility model.

Claims

1. A cover plate of coated glass, characterized in that, The coating layer comprises a substrate layer (1), a polyurethane resin layer (2), a niobium nitride layer (3) and a boron carbide layer (4). The polyurethane resin layer (2), the niobium nitride layer (3) and the boron carbide layer (4) are sequentially arranged from bottom to top along the height direction of the substrate layer (1) on the surface of the substrate layer (1). The niobium nitride layer (3) and the boron carbide layer (4) are combined to form the coating layer, and the polyurethane resin layer (2) is used to connect the coating layer and the substrate layer (1).

2. The cover glass of claim 1, wherein, The thickness of the polyurethane resin layer (2) is greater than that of the niobium nitride layer (3) and the boron carbide layer (4).

3. The glass cover plate of claim 1, wherein, The niobium nitride layer (3) and the boron carbide layer (4) are formed on the surface of the substrate layer (1) by coating.

4. The cover glass of claim 2 or 3, wherein, The edges of the substrate layer (1), the polyurethane resin layer (2), the niobium nitride layer (3) and the boron carbide layer (4) are flush with each other.

5. The cover glass of claim 1, wherein, The edge of the coating layer is provided with a protective part (5) for wrapping the edge of the coating layer.

6. The cover glass of claim 5, wherein, The protective part (5) is a ring cover (6) arranged around the coating layer.

7. The cover glass of claim 6, wherein, One end face of the ring cover (6) is flush with the upper surface of the boron carbide layer (4), and the other end face is flush with the lower surface of the polyurethane resin layer (2).

8. The cover glass of claim 5, wherein, The surface of the substrate layer (1) is provided with a recessed groove (7), and the polyurethane resin layer (2), the niobium nitride layer (3) and the boron carbide layer (4) are sequentially arranged from bottom to top in the recessed groove (7).

9. The glass cover plate of claim 5, wherein, The protective part (5) comprises a first edge part (8) and a second edge part (9). The first edge part (8) is arranged around the niobium nitride layer (3), and the lower end of the first edge part (8) is flush with the lower surface of the polyurethane resin layer (2), and the upper end is flush with the upper surface of the niobium nitride layer (3). The second edge part (9) is arranged around the first edge part (8), and the upper end of the second edge part (9) is flush with the upper surface of the boron carbide layer (4), and the lower end is connected with the side surface of the substrate layer (1).

10. The cover glass of claim 9, wherein, The second edge part (9) is integrally formed with the boron carbide layer (4).

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