Glass cover plate

Abstract

The utility model discloses a glass cover plate. The glass cover plate comprises a substrate, a protective layer and an additional cover plate, the substrate is provided with a front surface and a back surface; the protective layer is positioned on the front surface, and the additional cover plate is positioned on the back surface; the protective layer comprises a first plating layer, a second plating layer and a third plating layer; on the front surface, the first plating layer, the second plating layer and the third plating layer are sequentially stacked from bottom to top along the thickness direction of the glass cover plate; the additional cover plate comprises a thermochromic layer and an anti-scratch layer, and the thermochromic layer and the anti-scratch layer are sequentially stacked on the back surface along the thickness direction of the glass cover plate from top to bottom. And the thermochromic ink and the niobium nitride layer are arranged on the back surface, so that the performance of the cover plate is comprehensively improved.

Description

TECHNICAL FIELD

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

[0002] With the popularization of science and technology products, the performance requirement of display screen cover plate as the key component of protecting screen is increasingly strict.

[0003] Typically, the patent document with the application number CN201810147381.4 discloses a processing method of glass cover plate, glass cover plate and mobile terminal, which prevents the contact with the bristles and avoids the flatness deterioration near the camera hole on the upper surface of the glass cover plate when polishing the 2.5D curved surface of the glass cover plate, since multiple glass cover plates are in mutual stacking state, the upper surface and the lower surface of the glass cover plate are mutually adhered, and the upper surface and the lower surface are protected.

[0004] The technical solution disclosed in the above patent document is the common structure of glass cover plate, but there are limitations in specific use, as follows:

[0005] Firstly, the traditional glass cover plate is easy to produce scratches in daily use, which affects visual effect and service life.

[0006] Secondly, the traditional cover plate is easy to corrode or discolor when contacting with chemicals, which affects the appearance and performance.

[0007] Thirdly, the common glass cover plate has single function, which cannot meet the strict requirements of modern electronic equipment and display technology on cover plate material.

[0008] Therefore, how to solve the above-mentioned problems existing in the prior art has become the subject to be studied and solved by the utility model. UTILITY MODEL CONTENT

[0009] Therefore, it is necessary to provide a glass cover plate aiming at the above technical problems.

[0010] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0011] A glass cover plate, comprising a substrate, a protective layer and an additional cover plate;

[0012] The substrate has a front surface and a back surface;

[0013] The protective layer is positioned on the front surface, and the additional cover plate is positioned on the back surface;

[0014] The protective layer comprises a first plating layer, a second plating layer and a third plating layer; on the front surface, the first plating layer, the second plating layer and the third plating layer are sequentially stacked from bottom to top along the thickness direction of the glass cover plate.

[0015] The additional cover plate comprises a thermochromic layer and a scratch-resistant layer, and on the back surface, the thermochromic layer and the scratch-resistant layer are sequentially stacked from top to bottom along the thickness direction of the glass cover plate.

[0016] Further, the first plating layer, the second plating layer and the third plating layer are an aluminum oxide intermediate layer, a tantalum carbide layer and a niobium carbide layer respectively, wherein the aluminum oxide intermediate layer is arranged on the front surface.

[0017] Further, the thermochromic layer and the scratch-resistant layer are a thermochromic ink screen printing layer and a niobium nitride layer respectively.

[0018] Further, the back surface comprises a display area and an edge area arranged at the edge of the display area.

[0019] The thermochromic layer and the scratch-resistant layer are arranged in the edge area.

[0020] Further, the thermochromic layer and the scratch-resistant layer are both annular structures.

[0021] Further, a positioning part and a clamping part are further included.

[0022] Of the positioning part and the clamping part, one is arranged on the front surface, and the other is arranged on the aluminum oxide intermediate layer surface at a position corresponding to the positioning part.

[0023] Further, from the perspective of a cross section, the positioning part is a groove arranged in a recessed manner from the front surface or a protrusion arranged in a protruding manner from the front surface.

[0024] The clamping part is a clamping block arranged in a protruding manner from the aluminum oxide intermediate layer surface or an embedded groove arranged in a recessed manner from the aluminum oxide intermediate layer surface.

[0025] Further, the groove is in a strip shape or a wave shape.

[0026] Further, an anchoring part is arranged between the aluminum oxide intermediate layer surface and the second plating layer.

[0027] The anchoring part is arranged on the aluminum oxide intermediate layer.

[0028] Further, the anchoring part is a plurality of micropores arranged on the aluminum oxide intermediate layer surface or a plurality of protruding columns arranged on the upper surface of the aluminum oxide intermediate layer.

[0029] Compared with the prior art, the present application has the following beneficial effects:

[0030] The utility model discloses a front face is carefully selected and combined carbonized tantalum, carbonized niobium and alumina high performance material, sets up temperature -sensitive discoloration ink and niobium nitride layer at the back, realized the overall promotion of cover plate performance.

[0031] Specifically, on the front face of the glass cover plate, carbonized tantalum and carbonized niobium layers are successively plated, and the anti-scratch and wear-resistant properties of the cover plate are significantly enhanced by utilizing the characteristics of the two high-hardness and high-wear-resistant materials, while the chemical stability and thermal stability are ensured. The alumina layer as an intermediate layer not only further improves the scratch resistance, but also provides good insulation and chemical stability to protect the lower structure from erosion.

[0032] On the frame area of the back face of the cover plate, temperature-sensitive discoloration ink is used for silk printing, which gives the product unique interest and interactivity, and the silk printing process is flexible and changeable, and can customize diversified patterns to improve the aesthetic degree of the product. To prevent the ink layer from being damaged, a niobium nitride layer is arranged below the ink area, and its high hardness and high wear resistance effectively prevent the ink layer from being scratched and protect the ink layer from environmental influences, prolonging the service life. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 The utility model provides whole structure schematic diagram for the utility model;

[0034] Figure 2 Temperature -sensitive discoloration layer structure schematic diagram is provided for the utility model;

[0035] Figure 3 The utility model provides occlusal block structure schematic diagram;

[0036] Figure 4 The utility model provides convex block structure schematic diagram;

[0037] Figure 5 The utility model provides micro -hole structure schematic diagram;

[0038] Figure 6 The utility model provides convex column structure schematic diagram.

[0039] Markings in the drawing are as follows:

[0040] 1, substrate;2, protective layer;3, additional cover plate;4, front face;5, back face;6, first plating layer;7, second plating layer;8, third plating layer;9, temperature -sensitive discoloration layer;10, scratch -resistant layer;11, recess;12, convex block;13, occlusal block;14, fitting groove;15, micro -hole;16, convex column. DETAILED DESCRIPTION

[0041] 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 scope of protection of the present application.

[0042] Firstly, as described in the background, traditional glass cover plates are prone to scratches in daily use, affecting visual effect and service life. Secondly, traditional cover plates are prone to corrosion or discoloration when contacting chemicals, affecting appearance and performance. Thirdly, common glass cover plates have relatively single function, which cannot meet the strict requirements of modern electronic devices and display technology on cover plate materials.

[0043] To solve this technical problem, the present application provides a glass cover plate.

[0044] Specifically, please refer to Figures 1-6 , the glass cover plate comprises a substrate 1, a protective layer 2 and an additional cover plate 3;

[0045] The substrate 1 has a front surface 4 and a back surface 5;

[0046] The protective layer 2 is positioned on the front surface 4, and the additional cover plate 3 is positioned on the back surface 5;

[0047] The protective layer 2 comprises a first plating layer 6, a second plating layer 7 and a third plating layer 8; on the front surface 4, along the thickness direction of the glass cover plate, the first plating layer 6, the second plating layer 7 and the third plating layer 8 are sequentially stacked from bottom to top;

[0048] The additional cover plate 3 comprises a temperature-sensitive discoloration layer 9 and a scratch-resistant layer 10, and on the back surface 5, along the thickness direction of the glass cover plate, the temperature-sensitive discoloration layer 9 and the scratch-resistant layer 10 are sequentially stacked from top to bottom.

[0049] Further, the first plating layer 6, the second plating layer 7 and the third plating layer 8 are respectively an aluminum oxide intermediate layer, a tantalum carbide layer and a niobium carbide layer, wherein the aluminum oxide intermediate layer is arranged on the front surface 4.

[0050] The present application selects and combines tantalum carbide, niobium carbide and aluminum oxide high-performance materials on the front surface 4, and sets temperature-sensitive discoloration ink and niobium nitride layer on the back surface 5, thereby comprehensively improving the performance of the cover plate.

[0051] Specifically, on the front surface 4 of the glass cover plate, a tantalum carbide layer and a niobium carbide layer are successively plated. By utilizing the characteristics of the two high-hardness and high-wear-resistance materials, the scratch resistance and wear resistance of the cover plate are significantly enhanced, while the chemical stability and thermal stability are ensured. The alumina layer as an intermediate layer not only further improves the scratch resistance, but also provides good insulation and chemical stability to protect the lower structure from erosion.

[0052] On the frame area of the back surface 5 of the cover plate, a temperature-sensitive color-changing ink is used for silk printing, which gives the product unique interest and interactivity. At the same time, the silk printing process is flexible and variable, and can customize diversified patterns to improve the aesthetic appearance of the product. In order to prevent the ink layer from being damaged, a niobium nitride layer is arranged below the ink area, which has high hardness and high wear resistance, effectively preventing the ink layer from being scratched and protecting the ink layer from environmental influences, prolonging the service life.

[0053] In order to enable personnel in the technical field to better understand the technical solutions of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the drawings.

[0054] It should be noted that, in the case of no conflict, the embodiments in the present application and the features and technical solutions in the embodiments can be combined with each other.

[0055] It should be noted that: similar reference numerals 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.

[0056] First embodiment

[0057] The glass cover plate comprises a substrate 1, a protective layer 2 and an additional cover plate 3.

[0058] The substrate 1 has a front surface 4 and a back surface 5.

[0059] The protective layer 2 is positioned on the front surface 4, and the additional cover plate 3 is positioned on the back surface 5.

[0060] The protective layer 2 comprises a first plating layer 6, a second plating layer 7 and a third plating layer 8. On the front surface 4, along the thickness direction of the glass cover plate, the first plating layer 6, the second plating layer 7 and the third plating layer 8 are sequentially stacked from bottom to top.

[0061] The additional cover plate 3 comprises a temperature-sensitive color-changing layer 9 and a scratch-resistant layer 10, which are sequentially stacked from top to bottom along the thickness direction of the glass cover plate on the back surface 5.

[0062] Preferably, the first plating layer 6, the second plating layer 7 and the third plating layer 8 are an aluminum oxide intermediate layer, a tantalum carbide layer and a niobium carbide layer respectively, wherein the aluminum oxide intermediate layer is arranged on the front surface 4.

[0063] The utility model discloses a careful selection and combination of tantalum carbide, niobium carbide and aluminum oxide high-performance materials on the front surface 4, and the arrangement of temperature-sensitive color-changing ink and niobium nitride layer on the back surface 5, which comprehensively improves the performance of the cover plate.

[0064] Specifically, on the front surface 4 of the glass cover plate, a tantalum carbide layer and a niobium carbide layer are successively plated, and the characteristics of the two high-hardness and high-wear-resistance materials significantly enhance the scratch resistance and wear resistance of the cover plate, while ensuring the chemical stability and thermal stability. The aluminum oxide layer as an intermediate layer not only further improves the scratch resistance, but also provides good insulation and chemical stability to protect the lower structure from erosion.

[0065] On the frame area of the back surface 5 of the cover plate, temperature-sensitive color-changing ink is used for silk printing, which gives the product unique interest and interactivity, and the silk printing process is flexible and variable, which can customize diversified patterns and improve the appearance of the product. To prevent damage to the ink layer, a niobium nitride layer is arranged below the ink area, which effectively prevents the ink layer from being scratched and protects the ink layer from environmental influences, prolonging the service life.

[0066] Preferably, the temperature-sensitive color-changing layer 9 and the scratch-resistant layer 10 are temperature-sensitive color-changing ink silk printing layer and niobium nitride layer respectively.

[0067] Preferably, the back surface 5 includes a display area and an edge area arranged at the edge of the display area.

[0068] The temperature-sensitive color-changing layer 9 and the scratch-resistant layer 10 are arranged in the edge area. The temperature-sensitive color-changing layer 9 and the scratch-resistant layer 10 both have a ring structure.

[0069] The temperature-sensitive color-changing ink changes color according to temperature changes, increasing the interest and interactivity of the product. The silk printing process is flexible, and diversified patterns and colors can be designed to improve the appearance of the product.

[0070] Second embodiment

[0071] The glass cover plate provided in embodiment 1 is further optimized and also includes a positioning part and a clamping part.

[0072] One of the positioning part and the clamping part is arranged on the front surface 4, and the other is arranged at the corresponding position of the surface of the aluminum oxide intermediate layer.

[0073] Preferably, from the perspective of the cross section, the positioning part is a groove 11 recessed from the front surface 4 or a protrusion 12 protruding from the front surface 4.

[0074] The engagement part is an engagement block 13 protruding from the surface of the alumina interlayer or an engagement groove 14 recessed from the surface of the alumina interlayer.

[0075] Preferably, the groove 11 is long strip-shaped or wave-shaped. This is to further increase the contact area.

[0076] To increase the interface contact area between the surface of the alumina interlayer and the substrate 1. Specifically, the following embodiments are provided:

[0077] Embodiment one: when the positioning part is a groove 11 recessed from the front surface 4, the engagement part is an engagement block 13 protruding from the surface of the alumina interlayer, i.e. the engagement block 13 is embedded into the groove 11 so that the connection strength between the surface of the alumina interlayer and the substrate 1 is sufficient.

[0078] Embodiment two: when the positioning part is a protrusion 12 protruding from the front surface 4, the engagement part is an engagement groove 14 recessed from the surface of the alumina interlayer. It can be known comprehensively that the difficulty in processing of embodiment two is greater than that of embodiment one, but the engagement strength of embodiment two is better, which is set according to the requirement in specific operation.

[0079] Third embodiment

[0080] Preferably, an anchoring part is arranged between the surface of the alumina interlayer and the second plating layer 7.

[0081] The anchoring part is arranged on the alumina interlayer.

[0082] Preferably, the anchoring part is a plurality of micropores 15 arranged on the surface of the alumina interlayer or a plurality of protrusion columns 16 arranged on the upper surface of the alumina interlayer.

[0083] To increase the bonding strength between the surface of the alumina interlayer and the second plating layer 7. Specifically, the following embodiments are provided:

[0084] Specifically, by adjusting the deposition parameters (such as sputtering gas pressure and temperature), the alumina layer forms micropores 15 or columnar crystal structures. This porous structure can provide anchoring points for the subsequent deposition of the tantalum carbide / niobium carbide layer, thereby enhancing the interlayer bonding strength.

[0085] The use process of the glass cover plate provided by the utility model is as follows: the utility model carefully selects and combines tantalum carbide, niobium carbide and alumina high-performance materials on the front surface 4 and arranges the temperature-sensitive color-changing ink and niobium nitride layer on the back surface 5, so that the performance of the cover plate is comprehensively improved.

[0086] Specifically, on the front surface 4 of the glass cover plate, a tantalum carbide layer and a niobium carbide layer are successively plated, and the characteristics of the two high-hardness and high-wear-resistant materials are utilized to significantly enhance the scratch resistance and wear resistance of the cover plate, while ensuring the chemical stability and thermal stability. The alumina layer as an intermediate layer not only further enhances the scratch resistance, but also provides good insulation and chemical stability to protect the underlying structure from erosion.

[0087] On the frame area of the back surface 5 of the cover plate, a temperature-sensitive color ink is used for silk printing, which gives the product a unique interest and interactivity. At the same time, the silk printing process is flexible and variable, and can customize diversified patterns to improve the aesthetic appearance of the product. In order to prevent the ink layer from being damaged, a niobium nitride layer is provided below the ink area, which has high hardness and high wear resistance, effectively preventing the ink layer from being scratched, and protecting the ink layer from environmental effects, prolonging the service life.

[0088] In the present application, unless otherwise clearly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be interpreted in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0089] Obviously, the above-described embodiments are only a part of the embodiments of the present application, not all the embodiments, and the preferred embodiments of the present application are given in the drawings, but do not limit the patent scope of the present application. The present application can be realized in many different forms, and conversely, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some technical features. Any equivalent structure made by using the contents of the present application specification and drawings, directly or indirectly applied to other related technical fields, is also within the patent protection scope of the present application.

Claims

1. A glass cover plate, characterized in that, It includes a substrate (1), a protective layer (2), and an additional cover plate (3); The substrate (1) has a front side (4) and a back side (5); The protective layer (2) is positioned on the front side (4), and the additional cover plate (3) is positioned on the back side (5). The protective layer (2) includes a first coating (6), a second coating (7) and a third coating (8); on the front side (4), along the thickness direction of the glass cover, the first coating (6), the second coating (7) and the third coating (8) are stacked sequentially from bottom to top. The additional cover plate (3) includes a thermochromic layer (9) and a scratch-resistant layer (10). On the back side (5), along the thickness direction of the glass cover plate, the thermochromic layer (9) and the scratch-resistant layer (10) are stacked sequentially from top to bottom.

2. The glass cover plate according to claim 1, characterized in that, The first coating (6), the second coating (7) and the third coating (8) are respectively an aluminum oxide intermediate layer, a tantalum carbide layer and a niobium carbide layer, wherein the aluminum oxide intermediate layer is disposed on the front side (4).

3. The glass cover plate according to claim 2, characterized in that, The thermochromic layer (9) and the scratch-resistant layer (10) are respectively the thermochromic ink screen printing layer and the niobium nitride layer.

4. The glass cover plate according to claim 3, characterized in that, The back side (5) includes a display area and an edge area disposed at the edge of the display area; The thermochromic layer (9) and the scratch-resistant layer (10) are disposed within the edge area.

5. The glass cover plate according to claim 4, characterized in that, Both the thermochromic layer (9) and the scratch-resistant layer (10) have a ring structure.

6. The glass cover plate according to claim 2 or 3, characterized in that, It also includes the positioning part and the occlusal part; Of the positioning part and the engagement part, one is disposed on the front side (4), and the other is disposed on the surface of the alumina intermediate layer at a position corresponding to the positioning part.

7. The glass cover plate according to claim 6, characterized in that, Viewed from a cross-sectional perspective, the positioning part is a groove (11) recessed from the front (4) or a protrusion (12) protruding from the front (4). The interlocking part is an interlocking block (13) protruding from the surface of the alumina intermediate layer or an interlocking groove (14) recessed from the surface of the alumina intermediate layer.

8. The glass cover plate according to claim 7, characterized in that, The groove (11) is elongated or wavy.

9. The glass cover plate according to claim 2 or 3, characterized in that, An anchoring portion is provided between the surface of the alumina intermediate layer and the second coating layer (7); The anchoring part is disposed on the alumina intermediate layer.

10. The glass cover plate according to claim 9, characterized in that, The anchoring part is a plurality of micropores (15) disposed on the surface of the alumina intermediate layer or a plurality of protrusions (16) disposed on the upper surface of the alumina intermediate layer.

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