A glass cover plate and a detection jig therefor

Abstract

The utility model relates to propose a kind of glass cover plate and detection fixture for it, comprising: glass substrate;Multiple composite plating film layers are set to the front of glass substrate, composite plating film layer is from glass substrate surface outward in turn niobium pentoxide layer, potassium oxide layer, nickel three aluminium layer;Composite protective layer is set to the frame area of glass substrate back, composite protective layer is from glass substrate surface outward in turn photosensitive color-changing ink layer, chromium carbide layer;Wherein, the four around of glass substrate are located in intermediate site and extend outward bulge, form a circle of protruding part, protruding part is used to be buckled assembly with the shell of electronic equipment.It also proposes a kind of detection fixture, for the combination test cover plate and AMOLED display screen, TFT display screen and the combination effect of backlight protected by the present application, without sticking again after quality inspection, easy to operate, time-saving and labor-saving, also save cost.

Description

Technical Field

[0001] This utility model relates to the field of cover plate technology, and more specifically, to a glass cover plate and a testing fixture for it. Background Technology

[0002] With the rapid development of technological products, consumers have placed higher demands on the appearance, durability, and functionality of electronic devices. Traditional glass covers are proving inadequate in dealing with complex usage environments and diverse needs, particularly in terms of wear resistance, corrosion resistance, and visual appeal. Therefore, developing a novel layered structure for cover coatings to significantly improve the physical properties, chemical stability, and visual effects of glass covers has become a pressing issue for the industry. Utility Model Content

[0003] The purpose of this invention is to provide a glass cover plate and a testing fixture for it, in order 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 glass cover plate, comprising:

[0005] Glass substrate;

[0006] A multilayer composite coating layer is disposed on the front side of the glass substrate. The composite coating layer consists of niobium pentoxide layer, potassium oxide layer and nickel aluminum layer from the surface of the glass substrate outward.

[0007] A composite protective layer is disposed on the back frame area of ​​the glass substrate. The composite protective layer consists of a photosensitive color-changing ink layer and a chromium carbide layer from the surface of the glass substrate outwards.

[0008] The glass substrate has a ring of protrusions extending outwards from the center, which is used to fasten and assemble with the casing of the electronic device.

[0009] As a preferred technical solution, the thickness of the protrusion accounts for 1 / 5 to 1 / 4 of the total thickness of the glass substrate.

[0010] As a preferred technical solution, the niobium pentoxide layer has a thickness of 10-20 nm, the potassium oxide layer has a thickness of 10-20 nm, the nickel-aluminum layer has a thickness of 5-15 nm, the photosensitive color-changing ink layer has a thickness of 8-12 μm, and the chromium carbide layer has a thickness of 20-50 nm.

[0011] As a preferred technical solution, the niobium pentoxide layer is deposited using a magnetron sputtering process, and the crystal structure within the layer is monoclinic, with the grain size controlled in the range of 5-8 nm.

[0012] As a preferred technical solution, the surface roughness Ra of the nickel-aluminum layer is ≤0.05μm.

[0013] As a preferred technical solution, the chromium carbide layer has a nanocrystalline structure with a grain size of 10-30 nm, a Vickers hardness of ≥2200 HV, and an internal residual compressive stress of 1.5-2.5 GPa.

[0014] As a preferred technical solution, the photosensitive color-changing ink layer contains spiropyran-based photochromic microcapsules with a diameter of 50-100nm and a color-changing response wavelength of 300-550nm.

[0015] As a preferred technical solution, the glass substrate is chemically strengthened soda-lime glass with a surface compressive stress layer depth ≥30μm and a surface compressive stress ≥600MPa.

[0016] On the other hand, a testing fixture is also proposed for testing the appearance quality of the glass cover plate as described above. The fixture body includes a first groove and a second groove, which are connected in a stepped manner. A slot is provided on the inner wall of the first groove to engage with the protrusion of the glass cover plate, and the glass cover plate can move parallel along the slot. The first groove is used to accommodate the glass cover plate, and the second groove is used to accommodate the AMOLED display, TFT display, and backlight.

[0017] As a preferred technical solution, the fixture body is closed on three sides and has a window on the top surface. An opening is provided on the side of the fixture body near the top surface for inserting a glass cover. The second groove is provided with areas for accommodating an AMOLED display, a TFT display, and a backlight, respectively.

[0018] The beneficial effects of this utility model are as follows: The new glass cover utilizes a front coating layer with a three-layer structure of niobium pentoxide, potassium oxide, and nickel-aluminum oxide, sequentially stacked on a glass substrate to form a robust protective barrier. The back frame area innovatively incorporates a photosensitive color-changing ink layer and a chromium carbide protective layer. The photosensitive color-changing ink layer gives the cover a unique visual effect, while the chromium carbide protective layer, with its high hardness and wear resistance, effectively protects the ink layer, preventing scratches or wear. Furthermore, this application provides a protrusion in the middle of the glass cover, allowing for snap-fit ​​assembly with the back cover of electronic devices, facilitating installation. Even further, this invention also protects a testing fixture for combining and testing the cover to be protected with an AMOLED display, TFT display, and backlight, eliminating the need for post-assembly quality inspection, making operation convenient, time-saving, labor-saving, and cost-effective. Attached Figure Description

[0019] 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.

[0020] Figure 1 This is a schematic diagram of the stacking structure of a glass cover plate according to Embodiment 1 of this utility model;

[0021] Figure 2 This is a schematic diagram of the front structure of a glass cover plate according to Embodiment 1 of this utility model;

[0022] Figure 3 This is a side view of a testing fixture according to Embodiment 2 of this utility model;

[0023] Figure 4 This is a side view of a glass cover plate placed into a testing fixture according to Embodiment 2 of this utility model;

[0024] Figure 5 This is a top view of a glass cover plate placed into a testing fixture according to Embodiment 2 of this utility model.

[0025] Explanation of reference numerals in the attached drawings: 10 glass cover plate; 1 glass substrate; 11 protrusion; 2 composite coating layer; 21 niobium pentoxide layer; 22 potassium oxide layer; 23 nickel-aluminum layer; 3 composite protective layer; 31 photosensitive color-changing ink layer; 32 chromium carbide layer;

[0026] Fixture body 20; first groove 201; slot 202; second groove 203; opening 204; TFT display screen 30. Detailed Implementation

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] It should be noted that "multiple" as mentioned in this article refers to two or more.

[0032] Example 1

[0033] like Figure 1-2 As shown, a glass cover plate 10 according to this example includes:

[0034] Glass substrate 1;

[0035] The multilayer composite coating layer 2 is disposed on the front side of the glass substrate 1. The composite coating layer 2 consists of niobium pentoxide layer 21, potassium oxide layer 22, and nickel aluminum layer 23 from the surface of the glass substrate 1 outward.

[0036] The composite protective layer 3 is disposed in the back frame area of ​​the glass substrate 1. The composite protective layer 3 consists of a photosensitive color-changing ink layer 31 and a chromium carbide layer 32, arranged sequentially from the surface of the glass substrate 1 outwards.

[0037] The glass substrate 1 has a ring of protrusions extending outwards from the center, forming a ring of protrusions 11. These protrusions 11 are used for fastening and assembling with the housing of the electronic device. The protrusions 11 and the glass substrate 1 can be integrally formed, or they can be formed by gluing them together.

[0038] Of the above, niobium pentoxide possesses high hardness, a high melting point, and good chemical stability, effectively improving the wear resistance and corrosion resistance of the glass cover plate 10, as well as its good adhesion to glass. The potassium oxide layer 22 further enhances the chemical stability and hardness of the cover plate, working synergistically with the niobium pentoxide layer 21 to provide more comprehensive protection. The nickel-aluminum layer 23, with its high hardness, wear resistance, and good oxidation resistance, provides additional protection for the cover plate and maintains surface smoothness.

[0039] With its extremely high hardness and wear resistance, the chromium carbide layer 32 serves as a protective layer for the ink layer, effectively preventing the ink from being scratched or worn, and ensuring the functionality and integrity of the ink layer.

[0040] In summary, the glass cover 10 provides multiple protective functions and enhances visual appeal. Furthermore, the glass cover 10 also features a protrusion 11 for fastening and assembling with the rear casing of electronic devices, facilitating installation.

[0041] Preferably, the thickness of the protrusion 11 is 1 / 5 to 1 / 4 of the thickness of the entire glass substrate 1.

[0042] Preferably, the niobium pentoxide layer 21 has a thickness of 10-20 nm, the potassium oxide layer 22 has a thickness of 10-20 nm, the nickel-aluminum layer 23 has a thickness of 5-15 nm, the photosensitive color-changing ink layer 31 has a thickness of 8-12 μm, and the chromium carbide layer 32 has a thickness of 20-50 nm.

[0043] Preferably, the niobium pentoxide layer 21 is deposited using a magnetron sputtering process, and the crystal structure within the layer is monoclinic, with the grain size controlled in the range of 5-8 nm.

[0044] Preferably, the surface roughness Ra of the nickel-aluminum layer 23 is ≤0.05μm.

[0045] Preferably, the chromium carbide layer 32 has a nanocrystalline structure with a grain size of 10-30 nm, a Vickers hardness of ≥2200 HV, and an internal residual compressive stress of 1.5-2.5 GPa.

[0046] Preferably, the photosensitive color-changing ink layer 31 contains spiropyran-based photochromic microcapsules with a diameter of 50-100 nm and a color-changing response wavelength of 300-550 nm. It changes color according to changes in light, providing a dynamic visual effect and increasing the product's interest and aesthetics.

[0047] Preferably, the glass substrate 1 is chemically strengthened soda-lime glass with a surface compressive stress layer depth ≥30μm and a surface compressive stress ≥600MPa.

[0048] Example 2

[0049] like Figure 3-5As shown, this embodiment presents a testing fixture for testing the appearance quality of a glass cover plate 10 as described above. The fixture body 20 includes a first groove 201 and a second groove 203. The first groove 201 and the second groove 203 are connected in a stepped manner. A slot 202 is provided on the inner wall of the first groove 201 to engage with the protrusion 11 of the glass cover plate 10. The glass cover plate 10 can move parallel along the slot 202. The first groove 201 is used to accommodate the glass cover plate 10, and the second groove 203 is used to accommodate the AMOLED display screen, the TFT display screen 30, and the backlight.

[0050] Preferably, the fixture body 20 is closed on three sides and has a window on the top surface. An opening 204 is provided on the side of the fixture body 20 near the top surface for pushing in the glass cover plate 10. The second groove 203 is provided with areas for accommodating the AMOLED display, the TFT display 30 and the backlight, respectively.

[0051] In the specific implementation of the test, such as Figure 4 As shown, the glass cover 10 is pushed into the fixture through the opening 204, and then pushed to the area above the AMOLED display for testing; it is pushed down to the area above the TFT display 30 for testing; and then pushed down to the area above the backlight area for testing. This testing method is convenient and simple, and eliminates the need for pasting before testing, which would otherwise result in wasted costs if there are quality issues.

[0052] Of course, the testing fixture also needs to include a lighting device and other testing equipment for testing the screen quality. Those skilled in the art can use these devices for testing based on existing technology, but the specifics will not be elaborated here.

[0053] This invention proposes a layered structure for the cover plate coating, based on advanced materials science and coating technology. By precisely controlling the thickness and combination of each layer, it achieves a comprehensive upgrade to the performance of the glass cover plate. The front coating layer adopts a three-layer structure of niobium pentoxide, potassium oxide, and nickel-aluminum alloy, which are sequentially stacked on the glass substrate to form a robust protective barrier. The niobium pentoxide layer, with its high hardness, high melting point, and good chemical stability, provides basic protection for the cover plate; the potassium oxide layer further enhances the chemical stability and hardness of the cover plate; and the nickel-aluminum alloy layer, with its excellent wear resistance and oxidation resistance, ensures the smoothness and long-term stability of the cover plate surface. The back frame area innovatively introduces a photosensitive color-changing ink layer and a chromium carbide protective layer. The former gives the cover plate a unique visual effect, while the latter, with its high hardness and wear resistance, effectively protects the ink layer from scratches or wear. The overall structural design is scientific and reasonable, with each layer of materials complementing each other to jointly improve the physical properties, chemical stability, and visual appeal of the cover plate, bringing a brand-new user experience and market competitiveness to electronic products.

[0054] Furthermore, this application provides a protrusion in the middle of the glass cover, which can be snapped together with the back cover of the electronic device for easy installation. Even further, this invention also protects a testing fixture for combining and testing the effect of the cover to be protected with an AMOLED display, a TFT display, and a backlight. This eliminates the need for post-assembly quality inspection, making operation convenient, time-saving, labor-saving, and cost-effective.

[0055] 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 glass cover plate characterized by, The application relates to a glass substrate, a multilayer composite coating layer arranged on the front surface of the glass substrate, a composite protective layer arranged on the frame area of the back surface of the glass substrate, and a convex part arranged on the four sides of the glass substrate. The thickness of the convex part accounts for 1 / 5 to 1 / 4 of the thickness of the whole glass substrate. The thickness of the niobium pentoxide layer is 10-20 nm, the thickness of the potassium oxide layer is 10-20 nm, the thickness of the nickel-aluminum layer is 5-15 nm, the thickness of the photosensitive color-changing ink layer is 8-12 mu m, and the thickness of the chromium carbide layer is 20-50 nm. The niobium pentoxide layer is deposited by a magnetron sputtering process, the crystal structure in the layer is monoclinic, and the grain size is controlled in the range of 5-8 nm. The roughness Ra of the surface of the nickel-aluminum layer is less than or equal to 0.05 mu m.

2. The glass cover sheet of claim 1, wherein, The chromium carbide layer has a nanocrystalline structure, the grain size is 10-30 nm, the Vickers hardness is greater than or equal to 2200 HV, and the residual compressive stress in the layer is 1.5-2.5 GPa.

3. The glass cover sheet of claim 1, wherein, The glass substrate is a chemically strengthened sodium-calcium glass, the surface compressive stress layer depth is greater than or equal to 30 mu m, and the surface compressive stress is greater than or equal to 600 MPa.

4. The glass cover sheet of claim 3, wherein, The application relates to a jig body for detecting the appearance quality of a glass cover plate, the jig body comprising a first recess and a second recess, the first recess and the second recess being connected in a stepped manner, a clamping groove corresponding to the convex part of the glass cover plate being arranged on the inner wall of the first recess, and the glass cover plate being capable of moving in parallel along the clamping groove; the first recess is used for accommodating the glass cover plate, and the second recess is used for accommodating an AMOLED display screen, a TFT display screen and a backlight.

5. The glass cover sheet of claim 3, wherein, The jig body is closed on three sides and is open on the top surface, an opening is arranged on the side surface of the jig body close to the top surface, the opening is used for pushing the glass cover plate, and the second recess is provided with regions for accommodating the AMOLED display screen, the TFT display screen and the backlight.

6. The glass cover sheet of claim 3, wherein, ​ 7. The glass cover sheet of any of claims 1-6, wherein, ​ 8. An inspection tool comprising: ​ 9. The test fixture of claim 8, wherein: ​

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