Composite functional glass substrate

Abstract

The utility model relates to a kind of composite function glass substrate, including following laminar structure: glass substrate, the front of glass substrate includes plating area and extension area, the back of glass substrate includes extension area, viewing area and non-viewing area;The front plating area of glass substrate is successively laminated with zinc oxide plating layer, nickel plating and fluorinated nickel plating layer from inside to outside;The back non-viewing area of glass substrate is successively laminated with photosensitive color-changing ink silk printing layer and polyurethane resin protective layer from inside to outside;Wherein, the extension area of the front of glass substrate is spaced apart with 3D printing plastic strip, and a layer of metal chromium layer is covered in the remaining area of plastic strip and extension area.The cover plate integrates excellent conductivity, high corrosion resistance, high hardness and unique visual effect, and has high application value.

Description

Technical Field

[0001] This utility model relates to the field of cover plate technology, and more specifically, to a composite functional glass substrate. Background Technology

[0002] With the advancement of technology, the requirements for the functionality and aesthetics of glass substrates are increasing. Traditional glass substrates can no longer meet the comprehensive needs of high-end electronic products for conductivity, corrosion resistance, hardness, and visual effects. Especially in fields such as smart wearable devices and high-end displays, higher demands are placed on the protective and aesthetic properties of glass substrates. In existing technologies, a single coating layer often fails to achieve all performance characteristics and is prone to performance degradation due to environmental factors. Therefore, developing a glass substrate coating structure that integrates excellent conductivity, high corrosion resistance, high hardness, and unique visual effects is particularly important. Utility Model Content

[0003] The purpose of this invention is to propose a composite functional glass substrate, which aims to solve some of the technical problems existing in the prior art.

[0004] Specifically, the technical solution of this utility model is as follows: a composite functional glass substrate is proposed, comprising the following layered structure: a glass substrate, the front side of which includes a coating area and an epitaxial area, and the back side of which includes an epitaxial area, a viewing area and a non-viewing area.

[0005] The front coating area of ​​the glass substrate is layered with zinc oxide, nickel, and nickel fluoride coating layers from the inside out; the back non-viewing area of ​​the glass substrate is layered with photosensitive color-changing ink screen printing layer and polyurethane resin protective layer from the inside out.

[0006] Among them, 3D-printed plastic strips are spaced apart on the epitaxial region of the front side of the glass substrate, and a layer of metallic chromium is covered on the plastic strips and the remaining area of ​​the epitaxial region.

[0007] As a preferred technical solution, the thickness of the zinc oxide coating layer is 20-50 nanometers, the thickness of the nickel coating layer is 200-250 nanometers, the thickness of the nickel fluoride coating layer is 50-100 nanometers, the thickness of the photosensitive color-changing ink screen printing layer is 6-8 micrometers, and the thickness of the polyurethane resin protective layer is 16-18 micrometers.

[0008] As a preferred technical solution, the thickness of the metallic chromium layer is 100–150 nanometers.

[0009] As a preferred technical solution, the zinc plating layer is formed by magnetron sputtering, and its surface roughness Ra≤0.3μm.

[0010] As a preferred technical solution, the screen printing layer of the photosensitive color-changing ink comprises: photochromic material, epoxy acrylate resin, and nano titanium dioxide.

[0011] As a preferred technical solution, the color difference value ΔE of the photosensitive color-changing ink screen printing layer under ultraviolet light irradiation is ≥15, and the response time is ≤5 seconds.

[0012] As a preferred technical solution, the polyurethane resin protective layer is a UV-curable resin with a surface pencil hardness ≥3H and light transmittance ≥92%.

[0013] As a preferred technical solution, an anti-fingerprint coating is also provided on the outer surface of the nickel fluoride coating layer. The anti-fingerprint coating has a thickness of 5-8 nanometers and contains a perfluoropolyether compound.

[0014] As a preferred technical solution, a transition layer is provided between the nickel plating layer and the nickel fluoride plating layer. This transition layer is a nickel-zinc alloy layer with a thickness of 20-40 nanometers.

[0015] As a preferred technical solution, the glass substrate is chemically strengthened glass with a surface compressive stress layer depth ≥30μm and a Vickers hardness ≥650HV.

[0016] The beneficial effects of this utility model are: This utility model provides an innovative glass substrate coating structure, which achieves optimal performance by precisely controlling the composition and thickness of each layer of material.

[0017] First, a zinc oxide coating is deposited on the front side of the glass substrate, utilizing its excellent adhesion and barrier layer effect to provide a stable foundation for subsequent coating layers. Then, a nickel layer is deposited, which not only possesses excellent conductivity and corrosion resistance but also provides good mechanical strength, enhancing the overall performance of the glass substrate. To further improve corrosion resistance and hardness, a nickel fluoride layer is deposited on top of the nickel layer, forming a double protection.

[0018] On the non-viewing area of ​​the back of the glass substrate, photosensitive color-changing ink is printed using screen printing technology. The ink changes color according to lighting conditions, giving the product a unique visual effect. Finally, a layer of polyurethane resin is coated underneath the ink as a protective layer, effectively preventing scratches or wear on the ink, while its flexibility mitigates external impacts, extending the product's lifespan. This coating structure achieves a perfect combination of conductivity, corrosion resistance, hardness, and visual appeal, meeting the multiple requirements of high-end electronic products for glass substrates.

[0019] A 3D-printed plastic strip is provided on the epitaxial area on the front side of the glass substrate, and a metallic chromium layer is covered on the remaining area of ​​the epitaxial area and the plastic strip to form a metallic silver reflective mirror effect. Combined with the protruding plastic strip, it forms metallic raised stripes to achieve a decorative function. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a stacked structure of a composite functional glass substrate proposed in an embodiment of the present invention;

[0022] Figure 2 This is a top view of a composite functional glass substrate proposed in an embodiment of the present invention.

[0023] Explanation of reference numerals in the attached figures: 1. Glass substrate; 11. Coated area; 12. Epitaxial area; 13. Viewing area; 14. Non-viewing area; 2. Zinc oxide coating layer; 3. Nickel plating layer; 4. Nickel fluoride coating layer; 5. Photosensitive color-changing ink screen printing layer; 6. Polyurethane resin protective layer; 7. Plastic strip; 8. Metallic chromium layer. Detailed Implementation

[0024] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0025] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0026] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0027] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0028] It should be noted that "multiple" as mentioned in this article refers to two or more.

[0029] Example

[0030] like Figure 1-2 As shown, a composite functional glass substrate 1 proposed in this example includes the following layered structure:

[0031] The glass substrate 1 has a front side including a coating area 11 and an epitaxial area 12, and a back side including an epitaxial area 12, a viewing area 13 and a non-viewing area 14. The glass substrate 1 can be configured in various shapes, such as an irregularly shaped substrate shown in this embodiment, which is suitable for electronic devices with irregularly shaped screens.

[0032] The front coating area 11 of the glass substrate 1 is layered with a zinc oxide coating layer 2, a nickel coating layer 3 and a nickel fluoride coating layer 4 from the inside out; the back non-viewing area 14 of the glass substrate 1 is layered with a photosensitive color-changing ink screen printing layer 5 and a polyurethane resin protective layer 6 from the inside out; wherein, the epitaxial area 12 on the front side of the glass substrate 1 is provided with 3D printed plastic strips 7 at intervals, and a layer of metallic chromium layer 8 covers the plastic strips 7 and the remaining area of ​​the epitaxial area 12.

[0033] Preferably, the zinc oxide coating layer 2 has a thickness of 20-50 nanometers, the nickel coating layer 3 has a thickness of 200-250 nanometers, the nickel fluoride coating layer 4 has a thickness of 50-100 nanometers, the photosensitive color-changing ink screen printing layer 5 has a thickness of 6-8 micrometers, and the polyurethane resin protective layer 6 has a thickness of 16-18 micrometers.

[0034] Preferably, the thickness of the metallic chromium layer 8 is 100–150 nanometers.

[0035] Preferably, the zinc oxide coating layer is formed by magnetron sputtering, and its surface roughness Ra ≤ 0.3 μm. This ensures that the density and adhesion of the zinc oxide layer meet the coating technology requirements.

[0036] Preferably, the photochromic ink screen printing layer 5 comprises: a photochromic material, an epoxy acrylate resin, and nano-titanium dioxide. Further, the color difference value ΔE of the photochromic ink screen printing layer 5 under ultraviolet light irradiation is ≥15, and the response time is ≤5 seconds.

[0037] Preferably, the polyurethane resin protective layer 6 is a UV-curable resin with a surface pencil hardness ≥3H and a light transmittance ≥92%.

[0038] Preferably, not shown in the figure, an anti-fingerprint coating may also be provided on the outer surface of the nickel fluoride plating layer 4. This anti-fingerprint coating has a thickness of 5-8 nanometers and contains a perfluoropolyether compound. This expands the surface functionality of the cover plate and meets the application requirements of touch devices.

[0039] Preferably, not shown in the figure, a transition layer may be provided between the nickel plating layer 3 and the nickel fluoride plating layer 4. This transition layer is a nickel-zinc alloy layer with a thickness of 20-40 nanometers. The nickel-zinc transition layer addresses the difference in thermal expansion coefficients between the nickel layer and the nickel fluoride layer.

[0040] Preferably, the glass substrate 1 is chemically strengthened glass, with a surface compressive stress layer depth ≥30μm and a Vickers hardness ≥650HV.

[0041] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A composite functional glass substrate, characterized in that, It includes the following layered structures: A glass substrate, wherein the front side of the glass substrate includes a coating area and an epitaxial area, and the back side of the glass substrate includes an epitaxial area, a viewing area, and a non-viewing area. The coating area on the front side of the glass substrate is composed of a zinc oxide coating layer, a nickel coating layer, and a nickel fluoride coating layer stacked sequentially from the inside out. The back side of the glass substrate, in the non-viewing area, is layered with a photosensitive color-changing ink screen printing layer and a polyurethane resin protective layer in sequence from the inside to the outside. The epitaxial region on the front side of the glass substrate is provided with 3D-printed plastic strips at intervals, and a layer of metallic chromium is covered on the plastic strips and the remaining area of ​​the epitaxial region.

2. The composite functional glass substrate according to claim 1, characterized in that, The zinc oxide coating layer has a thickness of 20-50 nanometers, the nickel coating layer has a thickness of 200-250 nanometers, the nickel fluoride coating layer has a thickness of 50-100 nanometers, the photosensitive color-changing ink screen printing layer has a thickness of 6-8 micrometers, and the polyurethane resin protective layer has a thickness of 16-18 micrometers.

3. The composite functional glass substrate according to claim 1, characterized in that, The thickness of the chromium layer is 100–150 nanometers.

4. The composite functional glass substrate according to claim 1, characterized in that, The zinc oxide coating layer is formed by magnetron sputtering and has a surface roughness Ra≤0.3μm.

5. The composite functional glass substrate according to claim 1, characterized in that, The color difference value ΔE of the photosensitive color-changing ink screen printing layer under ultraviolet light irradiation is ≥15, and the response time is ≤5 seconds.

6. The composite functional glass substrate according to claim 1, characterized in that, The polyurethane resin protective layer is an ultraviolet-cured resin with a surface pencil hardness ≥3H and a light transmittance ≥92%.

7. The composite functional glass substrate according to claim 1, characterized in that, An anti-fingerprint coating with a thickness of 5-8 nanometers is also provided on the outer surface of the nickel fluoride coating layer, which contains a perfluoropolyether compound.

8. The composite functional glass substrate according to claim 1, characterized in that, A transition layer is provided between the nickel plating layer and the nickel fluoride plating layer. This transition layer is a nickel-zinc alloy layer with a thickness of 20-40 nanometers.

9. The composite functional glass substrate according to any one of claims 1-8, characterized in that, The glass substrate is chemically strengthened glass with a surface compressive stress layer depth ≥30μm and a Vickers hardness ≥650HV.

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