Glass panel, display screen and terminal

Abstract

A glass panel (100), comprising a glass panel substrate (10) and a composite film layer (20) arranged on a surface of the glass panel substrate (10), wherein the composite film layer (20) comprises a first priming layer (21), a first barrier layer (22), a diamond-like thin-film layer (23), a second barrier layer (24), a second priming layer (25) and a fingerprint-resistant layer (26), which are sequentially stacked. By means of plating the composite film layer (20) having a specific structure on the surface of the glass panel substrate (10) of the glass panel (100), the glass panel (100) has a relatively high Mohs hardness level, so as to improve the scratch resistance of the glass panel (100), and the composite film layer (20) has strong adhesion on the surface of the substrate and is thus not prone to falling off; and the composite film layer (20) can also reduce a color difference before and after film plating to a certain extent, thus improving the transmittance. Further provided are a display screen (200) comprising the glass panel (100), and a terminal (300).

Description

Glass panels, displays, and terminals

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on September 8, 2023, with application number 202311163164.1 and application name “Glass Panel, Display Screen and Terminal”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The embodiments of the present application relate to the technical field of glass panels, and in particular to a glass panel, a display screen, and a terminal. Background Art

[0003] Currently, displays using glass panels are widely used in mobile phones, tablets, wearable devices, and other terminal devices. To improve the scratch resistance of glass panels, the industry generally applies a protective film to the glass panel substrate or directly coats the surface with a protective film. However, applying a protective film not only increases device cost but also reduces the screen's optical properties, affecting the product's appearance. Existing protective films have the following problems: limited scratch resistance, poor adhesion, easy detachment of the protective film, significant color difference before and after coating, and significantly reduced transmittance.

[0004] Summary of the Invention

[0005] In view of this, an embodiment of the present application provides a glass panel. By coating a composite film layer with a specific structure on the surface of the glass panel substrate, the glass panel can have a higher Mohs hardness to improve the scratch resistance of the glass panel. The composite film layer has strong adhesion to the substrate surface and is not easy to fall off. The composite film layer can also reduce the color difference before and after coating to a certain extent and improve the transmittance.

[0006] According to a first aspect of an embodiment of the present application, a glass panel is provided, comprising a glass panel substrate and a composite film layer provided on a surface of the glass panel substrate, wherein the composite film layer comprises a first primer layer, a first barrier layer, a diamond-like carbon film layer, a second barrier layer, a second primer layer, and an anti-fingerprint layer stacked in sequence;

[0007] The materials of the first primer layer and the second primer layer are independently selected from one or more of silicon oxide and aluminum oxide, and the materials of the first barrier layer and the second barrier layer are independently selected from SiN x 、CN x 、SiC x 、SiN x C yOne or more of, wherein the values ​​of x and y are in the range of 1-6; the thickness of the first primer layer is 2nm-30nm, the thickness of the first barrier layer is 1nm-20nm, the thickness of the diamond-like film layer is 3nm-40nm, the thickness of the second barrier layer is 1nm-20nm, the thickness of the second primer layer is 2nm-30nm, the thickness of the anti-fingerprint layer is less than or equal to 20nm, and the thickness of the composite film layer is less than 100nm.

[0008] The glass panel provided in the embodiment of the present application has a high Mohs hardness, reduces the color difference and transmittance difference before and after coating, and has strong adhesion to the substrate surface by coating a composite film layer on the surface of the glass panel substrate. In the composite film layer, a first primer layer is contacted and laminated with the glass panel substrate. The first primer layer can improve the adhesion of the composite film layer to the glass panel substrate, reduce the risk of the composite film layer falling off, and improve the reliability of the glass panel. The diamond-like film layer has high hardness, can improve the scratch resistance of the glass panel, and is conducive to reducing the total thickness of the composite film layer. In addition, the diamond-like film layer can also reduce the color difference before and after coating of the composite film layer. The provision of the first barrier layer and the second barrier layer is conducive to improving the overall hardness of the glass panel, and can prevent adverse effects such as oxidation of the diamond-like film layer during the preparation process of the composite film layer and during the use of the glass panel, so that the glass panel can better maintain high hardness for a long time. The provision of the anti-fingerprint layer can reduce the residual fingerprints, stains, etc. on the glass panel during use, thereby improving the user experience. The provision of the second primer layer can improve the adhesion of the anti-fingerprint layer, so that the glass panel can maintain long-term anti-fouling performance. In addition, the present application reasonably controls the thickness of each layer in the composite film layer to a smaller value, and controls the total thickness of the composite film layer to below 100nm. Under the synergistic effect of each film layer, it can better take into account the hardness, adhesion and optical properties, so that the stress of the composite film layer is controlled at a lower level, effectively avoiding the problems of surface changes of the glass panel substrate and shedding of the composite film layer caused by the film layer stress, improving the adhesion of the composite film layer to the surface of the glass panel substrate, and extending the service life of the composite film layer, thereby obtaining a glass panel with excellent comprehensive performance to better meet the needs of terminal equipment.

[0009] In an embodiment of the present application, the composite film layer further includes a first optical film layer disposed between the first primer layer and the first barrier layer, and / or a second optical film layer disposed between the second primer layer and the second barrier layer; the first optical film layer and the second optical film layer are used to adjust the transmittance of the glass panel. The provision of the first optical film layer and / or the second optical film layer can effectively reduce the impact of the composite film layer on the transmittance and hue of the glass panel, allowing the glass panel to maintain a high visible light transmittance after coating, thereby meeting the application requirements of display screens.

[0010] The present application sets the first optical film layer and the second optical film layer to adjust and improve the optical performance of the composite film layer by using thin film interference. Thin film interference refers to the interference phenomenon caused by two beams of reflected light formed after a beam of light is reflected by two surfaces of a thin film.

[0011] In the embodiment of the present application, the thickness of the first optical film layer is 5nm-30nm; the thickness of the second optical film layer is 5nm-20nm. Appropriate thicknesses of the first and second optical film layers can effectively improve the optical performance of the composite film layer, optimize the hue and optical transmittance of the glass panel, and ensure reliable adhesion to the glass panel surface.

[0012] In the embodiment of the present application, the first optical film layer and the second optical film layer are a laminated structure formed by two or more sub-layers, and the material of each sub-layer is selected from silicon, aluminum, niobium, titanium or zirconium oxide, nitride, SiAl x O y N z Any one or more of the following, wherein the values ​​of x, y, and z are in the range of 1 to 6. The use of the above materials to prepare the optical film layer can effectively improve the visible light transmittance of the composite film layer, thereby better reducing the adverse effect of the composite film layer on the transmittance of the glass panel substrate.

[0013] In an embodiment of the present application, the first optical film layer includes at least one first sublayer and at least one second sublayer alternately stacked, and the first sublayer and the second sublayer have different refractive indices.

[0014] In an embodiment of the present application, the number of layers of the first sub-layer is 1-12 layers, and the number of layers of the second sub-layer is 1-12 layers.

[0015] In an embodiment of the present application, the second optical film layer includes at least one third sublayer and at least one fourth sublayer alternately stacked, and the third sublayer and the fourth sublayer have different refractive indices.

[0016] In an embodiment of the present application, the number of layers of the third sub-layer is 1-12 layers, and the number of layers of the fourth sub-layer is 1-12 layers.

[0017] In the embodiment of the present application, the silicon oxide includes one or more of SiO2 and SiO; the aluminum oxide includes Al2O3. The silicon oxide and aluminum oxide coatings used in the first and second primer layers can be closely bonded to the surface of the glass panel substrate and can increase the surface roughness of the glass panel substrate, thereby improving the adhesion of subsequently deposited films on the glass panel substrate.

[0018] In an embodiment of the present application, the niobium oxide includes one or more of NbO, NbO2, Nb2O3, and Nb2O5; the titanium oxide includes TiO2; the zirconium oxide includes ZrO2; the silicon nitride includes Si3N4; the aluminum nitride includes AlN; the niobium nitride includes one or two of NbN and Nb2N, the titanium nitride may be TiN, TiN2, Ti2N, Ti3N, Ti4N, Ti3N4, Ti3N5, or Ti5N6, and the zirconium nitride includes ZrN.

[0019] Diamond-like carbon film (DLC film for short) is an amorphous carbon film with a diamond-like structure. Its basic component is carbon, and it has high hardness, high resistivity, and excellent optical properties. Carbon atoms can be bonded in different ways, including diamond (sp3 bonds) and graphite (sp2 bonds). In diamond-like film, carbon atoms are bonded in sp3 and sp2 bonds. DLC film is a metastable, long-range disordered amorphous material. The bonding between carbon atoms is covalent, primarily consisting of sp2 and sp3 hybrid bonds. DLC film combines the excellent properties of both diamond and graphite.

[0020] In an embodiment of the present application, the diamond-like carbon film layer comprises a diamond-like carbon film doped with any one or more doping elements selected from silicon, aluminum, titanium, zirconium, molybdenum, nitrogen, and hydrogen. Doping the diamond-like carbon film with these elements effectively reduces the hue impact caused by carbon hybridization. Together with the first primer layer, the first barrier layer, the second barrier layer, the second primer layer, the first optical film layer, and / or the second optical film layer, the hue of the entire composite film layer is optimized, improving the appearance of the glass panel. Furthermore, the problem of a poor visual experience caused by color difference between partially detached composite film layers and the remaining portions is effectively addressed.

[0021] In the embodiment of the present application, the atomic percentage of non-carbon elements in the diamond-like carbon film layer is less than 40%. Appropriate control of the non-carbon element content can improve the performance of the diamond-like carbon film layer due to doping while better maintaining the original good properties of the diamond-like carbon.

[0022] In the embodiment of the present application, the sp3 hybrid bonds in the diamond-like carbon film layer account for more than 30% of the total sp2 hybrid bonds and sp3 hybrid bonds. Controlling the content of sp3 hybrid bonds in the diamond-like carbon film layer to a higher proportion is conducive to obtaining higher hardness.

[0023] In the embodiment of the present application, the atomic percentage of non-carbon elements and the proportion of sp3 hybrid bonds in the diamond-like carbon film layer can be measured using XPS (X-ray photoelectron spectroscopy).

[0024] In the present embodiment, the glass panel 100 has a Mohs hardness of greater than or equal to 7. Using a Mineralab Mohs hardness pen, with a force of 750g, scratch the coated surface of the glass panel 100 at a 45° angle. If no scratches are visible to the naked eye, the glass panel 100 is considered to have passed the Mohs hardness test. A glass panel with a high Mohs hardness is more resistant to scratches, improving its scratch resistance and enhancing the user experience.

[0025] In the embodiments of the present application, the composite film layer 20 can withstand more than 10,000 rubber rubs without falling off on the glass panel substrate 10. This value is obtained by rubbing a Minoan eraser with a 1000g weight back and forth on the coated surface of the glass panel at a speed of 40 revolutions / min. A high number of rubber rubs without falling off indicates that the composite film layer has strong adhesion to the glass panel substrate, which can extend the service life of the composite film layer and improve the long-term service reliability of the glass panel.

[0026] In the embodiment of the present application, the color difference value ΔE between the glass panel and the glass panel substrate is less than 1.5. That is to say, the color difference of the glass panel substrate before and after the composite film layer is coated is very small. The color difference value ΔE is a parameter generated as an auxiliary indicator of the Lab value. It is usually expressed as a color difference in the form of a numerical value, that is, the degree of difference between two colors. The smaller the value of ΔE, the closer the two colors are; conversely, the larger the value of ΔE, the more obvious the difference between the colors. Therefore, ΔE can quantitatively measure the color difference between two colors. ΔE can be calculated using the following formula:

[0027] △L, △a, and △b represent the difference between two colors on the brightness, a* axis, and b* axis, respectively. In other words, these three factors together determine the degree of difference between colors. Therefore, the value of △E is actually generated by the interaction of these three factors.

[0028] In the embodiment of the present application, the average transmittance of the glass panel in the wavelength range of 450nm-940nm is greater than or equal to 85%. The glass panel of the embodiment of the present application has a high optical transmittance, which can improve the display effect of the display screen using the glass panel and enhance the user experience.

[0029] In the embodiments of the present application, the glass panel has a transmittance at 550 nm reduced by less than 0.5% relative to the glass panel substrate, or the glass panel has a transmittance at 550 nm that is greater than or equal to the transmittance at 550 nm of the glass panel substrate. The glass panel of the present application has a composite film layer with a special structure disposed on the surface of the glass panel substrate. This composite film layer has minimal effect on the optical transmittance of the glass panel, and can even maintain the same transmittance as or higher than that of the glass panel substrate.

[0030] A second aspect of the embodiments of the present application provides a method for preparing a glass panel, comprising:

[0031] A composite film layer is plated on the surface of the glass panel substrate, wherein the composite film layer includes a first primer layer, a first barrier layer, a diamond-like film layer, a second barrier layer, a second primer layer and an anti-fingerprint layer stacked in sequence;

[0032] The first primer layer, the first barrier layer, the diamond-like carbon film layer, the second barrier layer and the second primer layer are prepared by magnetron sputtering, and the anti-fingerprint layer is prepared by evaporation; the materials of the first primer layer and the second primer layer are independently selected from one or more of silicon oxide and aluminum oxide, and the materials of the first barrier layer and the second barrier layer are independently selected from SiN x 、CN x 、SiC x 、SiN x C y One or more of, wherein the values ​​of x and y are in the range of 1-6; the thickness of the first primer layer is 2nm-30nm, the thickness of the first barrier layer is 1nm-20nm, the thickness of the diamond-like film layer is 3nm-40nm, the thickness of the second barrier layer is 1nm-20nm, the thickness of the second primer layer is 2nm-30nm, the thickness of the anti-fingerprint layer is less than or equal to 20nm, and the thickness of the composite film layer is less than 100nm.

[0033] In the embodiment of the present application, the composite film layer further includes:

[0034] The first optical film layer is disposed between the first primer layer and the first barrier layer, and / or the second optical film layer is disposed between the second primer layer and the second barrier layer; the first optical film layer and the second optical film layer are produced by magnetron sputtering. The method for producing the glass panel provided in the embodiments of the present application is simple, easy to control, and can be produced on a large scale.

[0035] A third aspect of the present invention provides a display screen comprising a display screen module and a glass panel covering the display screen module, wherein the glass panel comprises the glass panel described in the first aspect of the present invention. A display screen employing the glass panel of the present invention can better protect the display screen module and provide a better display effect.

[0036] The present application also provides a terminal comprising a housing and a circuit board located within the housing. The housing comprises a display screen, the display screen comprising a glass panel and a display screen module disposed within the glass panel. The glass panel comprises the glass panel described in the first aspect of the present application. The terminal using the glass panel of the present application has a good display effect. The terminal can be a mobile phone, tablet computer, laptop computer, wearable product (watch, bracelet, glasses), vehicle-mounted device, or other terminal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] FIG1 is a schematic cross-sectional view of a glass panel 100 according to an embodiment of the present application;

[0038] FIG2 is a schematic cross-sectional view of a glass panel 100 according to another embodiment of the present application;

[0039] FIG3 is a schematic cross-sectional view of a glass panel 100 provided in another embodiment of the present application;

[0040] FIG4 is a schematic cross-sectional view of a glass panel 100 provided in another embodiment of the present application;

[0041] FIG5 is a schematic diagram of the cross-sectional structure of the first optical film layer 27 according to an embodiment of the present application;

[0042] FIG6 is a schematic diagram of the cross-sectional structure of the second optical film layer 28 according to an embodiment of the present application;

[0043] FIG7 is a schematic diagram of a cross-sectional structure of a display screen 200 provided in an embodiment of the present application;

[0044] FIG8 is a schematic diagram of a cross-sectional structure of a terminal 300 provided in an embodiment of the present application;

[0045] FIG9 is a transmittance curve of the glass panel prepared in Example 1 of the present application;

[0046] FIG10 is a transmittance curve of the glass panel prepared in Example 2 of the present application;

[0047] FIG11 is a transmittance curve of the glass panel prepared in Example 3 of the present application. DETAILED DESCRIPTION

[0048] The embodiments of the present application will be described below with reference to the accompanying drawings.

[0049] At present, mobile phones, tablet computers, wearable products and other terminal devices all use glass panels to cover the display screen components. In order to improve the scratch resistance of the glass panel, a method commonly used in the industry is to coat a protective film on the surface of the glass panel substrate. However, the existing externally coated protective films have the following problems: limited improvement in the scratch resistance of the glass panel, insufficient adhesion, easy fall-off of the protective film, obvious color difference before and after coating, and significant reduction in transmittance. In order to solve the above problems to a certain extent, the embodiment of the present application provides a glass panel, which can make the glass panel have a higher Mohs hardness to improve the scratch resistance of the glass panel by coating a composite film layer with a specific structure on the surface of the glass panel substrate, and the composite film layer has strong adhesion to the substrate surface and is not easy to fall off; the composite film layer can also reduce the color difference before and after coating and improve the transmittance to a certain extent.

[0050] Referring to FIG. 1 , FIG. 1 is a schematic diagram of a cross-sectional structure of a glass panel provided in an embodiment of the present application. The glass panel 100 provided in an embodiment of the present application includes a glass panel substrate 10 and a composite film layer 20 provided on a surface of the glass panel substrate 10. The composite film layer 20 includes a first primer layer 21, a first barrier layer 22, a diamond-like film layer 23, a second barrier layer 24, a second primer layer 25, and an anti-fingerprint layer 26 stacked in sequence from the surface of the glass panel substrate 10 outward.

[0051] The materials of the first bottom layer 21 and the second bottom layer 25 are independently selected from one or more of silicon oxide and aluminum oxide. The materials of the first barrier layer 22 and the second barrier layer 24 are independently selected from SiN x 、CN x 、SiC x 、SiN x C y One or more of the following, wherein the values ​​of x and y are in the range of 1-6; the thickness of the first primer layer 21 is 2nm-30nm, the thickness of the first barrier layer 22 is 1nm-20nm, the thickness of the diamond-like film layer 23 is 3nm-40nm, the thickness of the second barrier layer 24 is 1nm-20nm, the thickness of the second primer layer 25 is 2nm-30nm, the thickness of the anti-fingerprint layer 26 is less than or equal to 20nm, and the thickness of the composite film layer 20 is less than 100nm.

[0052] The glass panel provided in the embodiment of the present application has a high Mohs hardness, reduces the color difference and transmittance difference before and after coating, and has strong adhesion to the substrate surface by coating a composite film layer on the surface of the glass panel substrate. In the composite film layer, a first primer layer is contacted and laminated with the glass panel substrate. The first primer layer can improve the adhesion of the composite film layer to the glass panel substrate, reduce the risk of the composite film layer falling off, and improve the reliability of the glass panel. The diamond-like film layer has high hardness, can improve the scratch resistance of the glass panel, and is conducive to reducing the total thickness of the composite film layer. In addition, the diamond-like film layer can also reduce the color difference before and after coating of the composite film layer. The provision of the first barrier layer and the second barrier layer is conducive to improving the overall hardness of the glass panel, and can prevent adverse effects such as oxidation of the diamond-like film layer during the preparation process of the composite film layer and during the use of the glass panel, so that the glass panel can better maintain high hardness for a long time. The provision of the anti-fingerprint layer can reduce the residual fingerprints, stains, etc. on the glass panel during use, thereby improving the user experience. The provision of the second primer layer can improve the adhesion of the anti-fingerprint layer, so that the glass panel can maintain long-term anti-fouling performance. In addition, the present application reasonably controls the thickness of each layer in the composite film layer to a smaller value, and controls the total thickness of the composite film layer to below 100nm. Under the synergistic effect of each film layer, it can better take into account the hardness, adhesion and optical properties, so that the stress of the composite film layer is controlled at a lower level, effectively avoiding the problems of surface changes of the glass panel substrate and shedding of the composite film layer caused by the film layer stress, improving the adhesion of the composite film layer to the surface of the glass panel substrate, and extending the service life of the composite film layer, thereby obtaining a glass panel with excellent comprehensive performance to better meet the needs of terminal equipment.

[0053] In the embodiment of the present application, the first coating layer 21 includes one or more of silicon oxide and aluminum oxide. Silicon oxide can be, for example, silicon dioxide (SiO2), silicon monoxide (SiO), etc. Aluminum oxide can be, for example, aluminum oxide (Al2O3). The first coating layer 21 is in contact with the glass panel substrate 10. The first coating layer 21 is coated with silicon oxide and aluminum oxide to be tightly bonded to the surface of the glass panel substrate 10, and can improve the roughness of the surface of the glass panel substrate 10, thereby improving the adhesion of the subsequently plated film layer on the surface of the glass panel substrate 10.

[0054] In the embodiments of the present application, the thickness of the first primer layer 21 can be 2nm-30nm. In some embodiments, the thickness of the first primer layer 21 can be, for example, 2nm, 3nm, 5nm, 6nm, 8nm, 10nm, 12nm, 14nm, 15nm, 17nm, 18nm, 20nm, 22nm, 25nm, 28nm, or 30nm. The first primer layer is configured to have an appropriate thickness and is connected between the glass panel substrate and the first barrier layer. This ensures that the film structure provided on the first primer layer forms a strong bond with the glass panel substrate while maintaining a relatively low total thickness of the composite film layer.

[0055] In the embodiment of the present application, the material of the first barrier layer 22 is selected from SiN x 、CN x 、SiC x 、SiN x C y One or more of the following, wherein the values ​​of x and y are within the range of 1-6. Specifically, the values ​​of x and y can be selected from 1, 2, 3, 4, 5, and 6, respectively. The use of the above materials for the first barrier layer 22 can achieve a higher hardness and effectively protect the diamond-like film layer from oxidation or other impurities that affect its performance during preparation and use, thereby facilitating a low thickness setting for the diamond-like film layer.

[0056] In the embodiments of the present application, the thickness of the first barrier layer 22 is 1 nm to 20 nm. In some embodiments, the thickness of the first barrier layer 22 can be, for example, 1 nm, 2 nm, 3 nm, 5 nm, 6 nm, 8 nm, 10 nm, 12 nm, 14 nm, 15 nm, 17 nm, 18 nm, or 20 nm. A smaller first barrier layer thickness can improve the overall adhesion of the composite film layer and enhance the overall performance of the glass panel.

[0057] In some embodiments of the present application, the first primer layer and the first barrier layer have different refractive indices. The first primer layer is silicon oxide, and the first barrier layer is SiN x 、CN x 、SiC x or SiN x C y In some embodiments of the present application, the first base layer is aluminum oxide, and the first barrier layer is SiN x 、CN x 、SiC x or SiN x C y .

[0058] Diamond-like carbon film (DLC film for short) is an amorphous carbon film with a diamond-like structure. Its basic component is carbon, and it has high hardness, high resistivity, and excellent optical properties. Carbon atoms can be bonded in different ways, including diamond (sp3 bonds) and graphite (sp2 bonds). In diamond-like film, carbon atoms are bonded in sp3 and sp2 bonds. DLC film is a metastable, long-range disordered amorphous material. The bonding between carbon atoms is covalent, primarily consisting of sp2 and sp3 hybrid bonds. DLC film combines the excellent properties of both diamond and graphite.

[0059] In an embodiment of the present application, the diamond-like film layer 23 includes a diamond-like film doped with any one or more elements selected from silicon, aluminum, titanium, zirconium, molybdenum, nitrogen, and hydrogen. By doping the diamond-like film with the above elements, it is beneficial to improve the hardness of the diamond-like film layer and / or reduce the hue effect caused by carbon hybridization, optimize the hue of the entire composite film layer, improve the appearance and display effect of the glass panel, and better avoid the problem of color difference between the composite film layer and the undecapped part after the composite film layer is partially detached, resulting in a poor visual experience. In some embodiments, the diamond-like film layer 23 includes one doping element, for example, the diamond-like film layer 23 is a nitrogen-doped diamond film layer, a silicon-doped diamond film layer, an aluminum-doped diamond film layer, a titanium-doped diamond film layer, a zirconium-doped diamond film layer, or a molybdenum-doped diamond film layer. In some embodiments, the diamond-like film layer 23 includes two or more doping elements, for example, the diamond-like film layer 23 is a nitrogen-silicon co-doped diamond film layer, a nitrogen-aluminum co-doped diamond film layer, etc.

[0060] In embodiments of the present application, the atomic percentage of non-carbon elements in the diamond-like carbon (DLC) film layer is less than 40%. In some embodiments, the atomic percentage of non-carbon elements in the DLC film layer is 1%-40%, for example, 1%, 2%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, or 39%. Non-carbon elements include the aforementioned doping elements. Appropriately controlling the content of non-carbon elements enables the DLC film layer to achieve improved performance due to doping while better maintaining the inherent excellent properties of the DLC.

[0061] In embodiments of the present application, sp3 hybridized bonds in the diamond-like carbon film layer account for more than 30% of the total sp2 hybridized bonds and sp3 hybridized bonds. In some embodiments, the proportion of sp3 hybridized bonds is greater than 40%, greater than 45%, greater than 50%, greater than 60%, or greater than 70%. Controlling the content of sp3 hybridized bonds in the diamond-like carbon film layer to a higher proportion is beneficial for achieving higher hardness.

[0062] In the embodiments of the present application, the thickness of the diamond-like carbon film layer 23 is 3 nm to 40 nm. In some embodiments, the thickness of the diamond-like carbon film layer 23 is 3 nm, 5 nm, 10 nm, 15 nm, 20 nm, 25 nm, 30 nm, 35 nm, or 40 nm. Controlling the thickness of the diamond-like carbon film layer within this range can significantly improve the hardness of the glass panel, thereby enhancing its scratch resistance. It can also keep the total thickness of the composite film layer at a low value, improving its adhesion to the glass panel substrate surface.

[0063] Referring to Figures 2, 3, and 4, Figure 2 is a schematic diagram of the cross-sectional structure of a glass panel 100 provided in another embodiment of the present application; Figure 3 is a schematic diagram of the cross-sectional structure of a glass panel 100 provided in another embodiment of the present application; and Figure 4 is a schematic diagram of the cross-sectional structure of a glass panel 100 provided in another embodiment of the present application. In an embodiment of the present application, the composite film layer 20 further includes a first optical film layer 27 disposed between the first coating layer 21 and the first barrier layer 22, and / or a second optical film layer 28 disposed between the second coating layer 25 and the second barrier layer 24; the first optical film layer 27 and the second optical film layer 28 are used to adjust the transmittance of the glass panel. The provision of the first optical film layer and / or the second optical film layer can effectively reduce the impact of the introduction of the composite film layer on the transmittance and hue of the glass panel, so that the glass panel can still have a high visible light transmittance after coating, thereby meeting the application requirements of the display screen.

[0064] The present application sets the first optical film layer and the second optical film layer to adjust and improve the optical performance of the composite film layer by using thin film interference. Thin film interference refers to the interference phenomenon caused by two beams of reflected light formed after a beam of light is reflected by two surfaces of a thin film.

[0065] In some embodiments of the present application, as shown in FIG2 , the composite film layer 20 includes a first optical film layer 27 disposed between the first primer layer 21 and the first barrier layer 22, but does not include a second optical film layer 28. In some embodiments of the present application, as shown in FIG3 , the composite film layer 20 includes a second optical film layer 28 disposed between the second primer layer 25 and the second barrier layer 24, but does not include the first optical film layer 27. In some embodiments of the present application, as shown in FIG4 , the composite film layer 20 includes both the first optical film layer 27 disposed between the first primer layer 21 and the first barrier layer 22, and the second optical film layer 28 disposed between the second primer layer 25 and the second barrier layer 24.

[0066] The present application sets the first optical film layer 27 and the second optical film layer 28 to adjust and improve the optical performance of the composite film layer 20 by utilizing thin film interference. Thin film interference refers to the interference phenomenon caused by two beams of reflected light formed after a beam of light is reflected by two surfaces of a thin film.

[0067] In the embodiment of the present application, the first optical film layer 27 and the second optical film layer 28 are both laminated structures formed by two or more sub-layers, and the material of each sub-layer is independently selected from silicon, aluminum, niobium, titanium or zirconium oxides, nitrides, SiAl x O y N z Any one or more of, wherein the values ​​of x, y, and z are in the range of 1-6. The first optical film layer 27 and the second optical film layer 28 may be materials comprising two or more different refractive indices to constitute two or more sub-layers with different refractive indices. Among them, silicon oxide may be, for example, silicon dioxide (SiO2), silicon monoxide (SiO), etc. Aluminum oxide may be, for example, aluminum oxide (Al2O3). Niobium oxide may be niobium monoxide, niobium dioxide, niobium trioxide, niobium pentoxide, or a mixture of two or more thereof, titanium oxide may be titanium dioxide, and zirconium oxide may be zirconium dioxide. Silicon nitride may be silicon nitride Si3N4, aluminum nitride may be aluminum nitride AlN, niobium nitride may be NbN, Nb2N, titanium nitride may be TiN, TiN2, Ti2N, Ti3N, Ti4N, Ti3N4, Ti3N5, Ti5N6, and zirconium nitride may be ZrN. SiAl x O y N z The values ​​of x, y, and z can be selected from 1, 2, 3, 4, 5, and 6, respectively. The use of the above materials to prepare the optical film layer can effectively improve the visible light transmittance of the composite film layer, thereby better reducing the adverse effects of the composite film layer on the transmittance of the glass panel substrate.

[0068] Referring to Figure 5, Figure 5 is a schematic cross-sectional view of the first optical film layer 27 according to an embodiment of the present application. The first optical film layer 27 includes at least one first sub-layer 271 and at least one second sub-layer 272, which are alternately stacked. The refractive index of the first sub-layer 271 is different from the refractive index of the second sub-layer 272. For example, the refractive index of the first sub-layer 271 may be lower than the refractive index of the second sub-layer 272. The first optical film layer 27 may be in contact with the first primer layer 21 via either the first sub-layer 271 or the second sub-layer 272; and the first optical film layer 27 may be in contact with the first barrier layer 22 via either the first sub-layer 271 or the second sub-layer 272. In the present application, the number of first sub-layers 271 and the number of second sub-layers 272 in the first optical film layer 27 may be 1-12. Specifically, layers 1 to 12 may be, for example, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, or 12. The number of layers of the first sublayer 271 and the second sublayer 272 may be the same or different. It is understood that the materials of the first sublayer 271 and the second sublayer 272 may be selected from oxides, nitrides, SiAl2O3, SiAl2O3, SiAl2O3, SiAl2O3, SiAl2O3, and SiAl2O3. x O y N z In some embodiments, the first sublayer 271 is silicon nitride Si3N4, and the second sublayer 272 is silicon dioxide SiO2. In some embodiments, the first sublayer 271 is silicon nitride Si3N4, and the second sublayer 272 is aluminum oxide Al2O3.

[0069] Referring to Figure 6, which is a schematic cross-sectional view of the second optical film layer 28 according to an embodiment of the present application, the second optical film layer 28 includes at least one third sub-layer 281 and at least one fourth sub-layer 282, which are alternately stacked. The refractive index of the third sub-layer 281 differs from the refractive index of the fourth sub-layer 282. For example, the refractive index of the third sub-layer 281 may be less than the refractive index of the fourth sub-layer 282. The second optical film layer 28 may be in contact with the second primer layer 25 with either the third sub-layer 281 or the second sub-layer 272; and the second optical film layer 28 may be in contact with the second barrier layer 24 with either the third sub-layer 281 or the fourth sub-layer 282. In the present application, the number of third sub-layers 281 and the number of fourth sub-layers 282 in the second optical film layer 28 may be 1-12. The number of layers 1 to 12 may be, for example, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, or 12. The number of layers of the third sublayer 281 and the fourth sublayer 282 may be the same or different. It is understood that the material of the third sublayer 281 and the fourth sublayer 282 may be selected from oxides, nitrides, SiAl2O3 ... x O y Nz In some embodiments, the third sublayer 281 is silicon nitride Si3N4, and the fourth sublayer 282 is silicon dioxide SiO2. In some embodiments, the third sublayer 281 is silicon nitride Si3N4, and the fourth sublayer 282 is aluminum oxide Al2O3.

[0070] In the present application, when the composite film layer 20 includes both the first optical film layer 27 and the second optical film layer 28, the first optical film layer 27 and the second optical film layer 28 may have the same composition structure or different composition structures. The first optical film layer 27 and the second optical film layer 28 may have the same number of sub-layers or different numbers. The first optical film layer 27 and the second optical film layer 28 may have the same thickness or different thicknesses.

[0071] In the embodiments of the present application, the thickness of the first optical film layer 27 is 5 nm to 30 nm. In some embodiments, the thickness of the first optical film layer 27 is 5 nm, 6 nm, 8 nm, 10 nm, 12 nm, 15 nm, 18 nm, 20 nm, 22 nm, 25 nm, or 30 nm. An appropriate first optical film layer thickness can effectively improve the optical properties of the composite film layer, optimize the hue and optical transmittance of the glass panel, and ensure reliable adhesion to the glass panel surface.

[0072] In the embodiments of the present application, the thickness of the second optical film layer 28 is 5 nm to 20 nm. In some embodiments, the thickness of the second optical film layer 28 is 5 nm, 6 nm, 8 nm, 10 nm, 12 nm, 15 nm, 18 nm, or 20 nm. An appropriate second optical film layer thickness can effectively improve the optical properties of the composite film layer, optimize the hue and optical transmittance of the glass panel, and ensure reliable adhesion to the glass panel surface.

[0073] In the embodiment of the present application, the second base layer 25 includes one or more of silicon oxide and aluminum oxide. Examples of silicon oxide include silicon dioxide (SiO2) and silicon monoxide (SiO). Examples of aluminum oxide include aluminum oxide (Al2O3). The second base layer 25 is in contact with and connected to the anti-fingerprint layer 26. The use of silicon oxide or aluminum oxide coating on the second base layer 25 allows the anti-fingerprint layer 26 to be tightly bonded to the glass panel substrate.

[0074] In the embodiments of the present application, the thickness of the second bottom layer 25 can be 2nm-30nm. In some embodiments, the thickness of the second bottom layer 25 can be, for example, 2nm, 3nm, 5nm, 6nm, 8nm, 10nm, 12nm, 14nm, 15nm, 17nm, 18nm, 20nm, 22nm, 25nm, 28nm, or 30nm. The second bottom layer is set to an appropriate thickness to ensure a strong bond between the anti-fingerprint layer and the glass panel substrate while maintaining a relatively low total thickness of the composite film layer.

[0075] In the embodiment of the present application, the material of the second barrier layer 24 is selected from SiN x 、CN x 、SiC x 、SiN x C y One or more of the following, wherein the values ​​of x and y are within the range of 1-6. Specifically, the values ​​of x and y can be selected from 1, 2, 3, 4, 5, and 6, respectively. The second barrier layer 24 employing the above-mentioned materials can achieve a higher hardness and effectively protect the diamond-like film layer from oxidation or other impurities that affect its performance during use, thereby facilitating a low thickness setting for the diamond-like film layer.

[0076] In the embodiment of the present application, the thickness of the second barrier layer 24 is 1 nm to 20 nm. In some embodiments, the thickness of the second barrier layer 24 can be, for example, 1 nm, 2 nm, 3 nm, 5 nm, 6 nm, 8 nm, 10 nm, 12 nm, 14 nm, 15 nm, 17 nm, 18 nm, or 20 nm. A smaller second barrier layer thickness can improve the overall adhesion of the composite film layer and enhance the overall performance of the glass panel.

[0077] In some embodiments of the present application, the second primer layer and the second barrier layer have different refractive indices. The second primer layer is silicon oxide, and the second barrier layer is SiN x 、CN x 、SiC x or SiN x C y In some embodiments of the present application, the second primer layer is aluminum oxide, and the second barrier layer is SiN x 、CN x 、SiC x or SiN x C y .

[0078] In the composite film layer 20 of the present application, the materials and thicknesses of the first primer layer 21 and the second primer layer 25 may be the same or different. The materials and thicknesses of the first barrier layer 22 and the second barrier layer 24 may be the same or different.

[0079] In the embodiment of the present application, the material of the anti-fingerprint layer 26 is not limited as long as it can achieve the anti-fingerprint effect. For example, it can be a fluorine-containing material, and the fluorine-containing material can be, for example, perfluoropolyether.

[0080] In the embodiments of the present application, the thickness of the anti-fingerprint layer 26 is less than or equal to 20 nm. In some embodiments, the thickness of the anti-fingerprint layer 26 is between 3 nm and 20 nm. In some embodiments, the thickness of the anti-fingerprint layer 26 is 3 nm, 5 nm, 6 nm, 8 nm, 10 nm, 12 nm, 15 nm, 18 nm, or 20 nm. Controlling the thickness of the anti-fingerprint layer to a smaller value can better control the total thickness of the composite film layer to a smaller value, thereby improving its adhesion to the surface of the glass panel substrate.

[0081] In the embodiment of the present application, the thickness of the composite film layer 20 is less than 100 nm. In some embodiments, the thickness of the composite film layer 20 is 10 nm, 20 nm, 30 nm, 40 nm, 50 nm, 55 nm, 60 nm, 65 nm, 70 nm, 75 nm, 80 nm, 85 nm, 90 nm, 95 nm, or 100 nm. Controlling the total thickness of the composite film layer to below 100 nm can keep the stress of the composite film layer at a low level, effectively avoiding the problems of changes in the surface shape of the glass panel substrate and shedding of the composite film layer caused by the film layer stress, improving the adhesion of the composite film layer to the surface of the glass panel substrate, and extending the service life of the composite film layer. In addition, the color difference of the appearance of the glass panel before and after coating can be minimized, thereby improving the user experience.

[0082] In the embodiments of the present application, the glass panel substrate 10 can be either glass-ceramics or ordinary glass. To improve the mechanical properties of the glass panel, chemically strengthened glass-ceramics or chemically strengthened ordinary glass can be used. The thickness and performance parameters of the glass panel substrate 10 can be selected based on actual needs.

[0083] In the present embodiment, the glass panel 100 has a Mohs hardness of greater than or equal to 7. Using a Mineralab Mohs hardness pen, with a force of 750g, scratch the coated surface of the glass panel 100 at a 45° angle. If no scratches are visible to the naked eye, the glass panel 100 is considered to have passed the Mohs hardness test. A glass panel with a high Mohs hardness is more resistant to scratches, improving its scratch resistance and enhancing the user experience.

[0084] In the embodiments of the present application, the composite film layer 20 can withstand more than 10,000 rubber rubs without falling off on the glass panel substrate 10. This value is obtained by rubbing a Minoan eraser with a 1000g weight back and forth on the coated surface of the glass panel at a speed of 40 revolutions / min. A high number of rubber rubs without falling off indicates that the composite film layer has strong adhesion to the glass panel substrate, which can extend the service life of the composite film layer and improve the long-term service reliability of the glass panel.

[0085] In an embodiment of the present application, the color difference value △E between the glass panel 100 and the glass panel substrate 10 is less than 1.5. In some embodiments, the color difference value △E between the glass panel 100 and the glass panel substrate 10 is less than 1.0. In an embodiment of the present application, the color difference value △E between the glass panel 100 and the glass panel substrate 10 is less than 0.5. That is to say, the color difference of the glass panel substrate before and after coating the composite film layer is very small. The color difference value △E is a parameter generated as an auxiliary indicator of the Lab value. It is usually expressed as a color difference in the form of a numerical value, that is, the degree of difference between the two colors. The smaller the value of △E, the closer the two colors are; conversely, the larger the value of △E, the more obvious the difference between the colors. Therefore, △E can quantitatively measure the color difference between two colors. △E can be calculated by the following formula:

[0086] △L, △a, and △b represent the difference between two colors on the brightness, a* axis, and b* axis, respectively. In other words, these three factors together determine the degree of difference between colors. Therefore, the value of △E is actually generated by the interaction of these three factors.

[0087] In the embodiments of the present application, the average transmittance of the glass panel 100 within the wavelength range of 450nm-940nm is greater than or equal to 85%. In some embodiments, the average transmittance of the glass panel 100 within the wavelength range of 450nm-940nm is greater than or equal to 88%. In some embodiments, the average transmittance of the glass panel 100 within the wavelength range of 450nm-940nm is greater than or equal to 90%. The glass panels of the embodiments of the present application have high optical transmittance, which can improve the display quality of the display screen using the glass panel and enhance the user experience.

[0088] In an embodiment of the present application, the 550nm transmittance of the glass panel 100 is reduced by less than 0.5% relative to the glass panel substrate 10. The 550nm transmittance of the glass panel 100 is reduced by less than 0.3% relative to the glass panel substrate 10. In some embodiments of the present application, the 550nm transmittance of the glass panel is greater than or equal to the 550nm transmittance of the glass panel substrate. The glass panel of the present application has a composite film layer with a special structure disposed on the surface of the glass panel substrate. The composite film layer has little effect on the optical transmittance of the glass panel and can even be consistent with or higher than the transmittance of the glass panel substrate, thereby ensuring that the glass panel still has a high transmittance after being coated with the composite film layer.

[0089] The glass panel of the embodiment of the present application has a high Mohs hardness, small color difference before and after coating, small difference in transmittance, and strong adhesion of the composite film layer to the substrate surface. The glass panel can be used for terminal device display screens to improve product competitiveness.

[0090] The present application also provides a method for preparing the glass panel, including:

[0091] A composite film layer is plated on the surface of the glass panel substrate, wherein the composite film layer includes a first primer layer, a first barrier layer, a diamond-like film layer, a second barrier layer, a second primer layer and an anti-fingerprint layer stacked in sequence;

[0092] The first primer layer, the first barrier layer, the diamond-like carbon film layer, the second barrier layer and the second primer layer are prepared by magnetron sputtering, and the anti-fingerprint layer is prepared by evaporation.

[0093] In an embodiment of the present application, the composite film layer also includes a first optical film layer arranged between the first base layer and the first barrier layer, and / or a second optical film layer arranged between the second base layer and the second barrier layer; the first optical film layer and the second optical film layer are prepared by magnetron sputtering.

[0094] In one embodiment of the present application, a method for preparing a glass panel may include:

[0095] The cleaned glass panel substrate is placed in a sputtering coating machine. The first base layer is first plated on the surface of the glass panel substrate, and then the first barrier layer is plated on the first base layer. Then, a nitrogen-doped diamond-like film layer is plated on the first barrier layer. Then, a second barrier layer is plated on the nitrogen-doped diamond-like film layer. A second base layer is plated on the second barrier layer. Finally, an AF anti-fingerprint layer is evaporated on the second base layer to obtain a glass panel.

[0096] The method for preparing the glass panel provided in the embodiment of the present application has a simple process and is easy to control, and can realize large-scale production.

[0097] Referring to Figure 7, which is a schematic cross-sectional view of a display screen 200 according to an embodiment of the present application, the display screen 200 includes a display screen module 201 and a glass panel 100 covering the display screen module. The glass panel body 10 of the glass panel 100 is in direct contact with the display screen module 201. The glass panel 100 protects the display screen module 201 and is also touchable by the user. Display screens employing the glass panel according to the embodiment of the present application can effectively protect the display screen module and provide a superior display quality.

[0098] Referring to Figure 8, Figure 8 is a schematic diagram of the cross-sectional structure of a terminal 300 provided in an embodiment of the present application. The terminal 300 provided in an embodiment of the present application includes a housing 301 and a circuit board (not shown in Figure 8) located inside the housing 301. The housing 301 includes a display screen 200, and the display screen 200 includes a glass panel 100 and a display screen module 201 disposed inside the glass panel 100. The terminal using the glass panel of the embodiment of the present application has a good display effect. The terminal can be a terminal device such as a mobile phone, a tablet computer, a laptop computer, a wearable product (a watch, a bracelet, glasses), or an in-vehicle device.

[0099] The embodiments of the present application are further described below with reference to a number of embodiments.

[0100] Transmittance and color difference were tested using optical testing equipment such as the CM3600a. Hardness was tested using a Mineralab Mohs hardness pen with a load of 750g, scratching the coated surface of the glass panel at a 45° angle. If no scratches were visible to the naked eye, the glass panel was considered to have passed the corresponding Mohs hardness test for that pen. Friction resistance was tested using a Minoan eraser with a 1000g weight, rubbing back and forth on the coated surface of the glass panel at a speed of 40 revolutions / min. Each back and forth stroke was counted as one stroke.

[0101] Example 1

[0102] The cleaned glass panel substrate is placed in a sputtering coating machine. First, a SiO2 primer layer with a thickness of 6nm is plated on the surface of the glass panel substrate. Then, a first optical film layer and a first barrier layer with a stacked structure of Si3N4 / SiO2 / Si3N4 / SiO2 / Si3N4 are plated on the primer layer. The total thickness of the first optical film layer and the first barrier layer is 30nm. Then, a nitrogen-doped diamond-like film layer with a thickness of 20nm is plated on the first optical film layer, and then a nitrogen-doped diamond-like film layer is plated on the nitrogen-doped diamond-like film layer. The stacked structure is a second optical film layer of Si3N4 / SiO2 / Si3N4 / SiO2, a second barrier layer and a second primer layer, with a total thickness of 20nm. Finally, an AF anti-fingerprint layer with a thickness of 8nm is evaporated on the second optical film layer to obtain a glass panel, whose stacked structure is glass / SiO2 / Si3N4 / SiO2 / Si3N4 / SiO2 / Si3N4 / nitrogen-doped diamond-like carbon film layer / Si3N4 / SiO2 / Si3N4 / SiO2 / AF.

[0103] The performance test is as follows:

[0104] 1. Transmittance:

[0105] FIG9 is a transmittance curve of the glass panel prepared in Example 1.

[0106] 2. Hardness test:

[0107] Mohs hardness 6 passes, Mohs hardness 7 passes, and Mohs hardness 8 fails.

[0108] 3. Friction resistance test:

[0109] Resistant to rubber friction for more than 10,000 times.

[0110] 4. Color difference test:

[0111] Test results: The color difference before and after coating is less than 0.5.

[0112] Example 2

[0113] The cleaned glass panel substrate is placed in a sputtering coating machine. First, a SiO2 primer layer with a thickness of 15nm is plated on the surface of the glass panel substrate. Then, a first optical film layer and a first barrier layer with a stacked structure of Si3N4 / Al2O3 / Si3N4 / Al2O3 / Si3N4 are plated on the primer layer. The total thickness of the first optical film layer and the first barrier layer is 20nm. Then, a nitrogen-doped diamond-like film layer with a thickness of 20nm is plated on the first optical film layer. Then, a stacked structure of Si3N4 / Al2O3 / Si3N4 / Al2O3 / Si3N4 is plated on the nitrogen-doped diamond-like film layer. The second optical film layer, the second barrier layer and the second primer layer of the structure are Si3N4 / Al2O3 / Si3N4 / Al2O3, with a total thickness of 15nm. Finally, a 10nm thick AF anti-fingerprint layer is evaporated on the second optical film layer to obtain a glass panel, whose stacked structure is glass / SiO2 / Si3N4 / Al2O3 / Si3N4 / Al2O3 / Si3N4 / nitrogen-doped diamond-like carbon film layer / Si3N4 / Al2O3 / Si3N4 / Al2O3 / AF.

[0114] The performance test is as follows:

[0115] 1. Transmittance test:

[0116] FIG10 is a transmittance curve of the glass panel prepared in Example 2.

[0117] 2. Hardness test:

[0118] Mohs hardness 6 passes, Mohs hardness 7 passes, and Mohs hardness 8 fails.

[0119] 3. Friction resistance test:

[0120] Resistant to rubber friction for more than 10,000 times.

[0121] 4. Color difference test:

[0122] Test results: The color difference before and after coating is less than 0.5.

[0123] Example 3

[0124] The cleaned glass panel substrate is placed in a sputtering coating machine. A first SiO2 primer layer with a thickness of 10 nm is first plated on the surface of the glass panel substrate. Then, a first SiC barrier layer with a thickness of 20 nm is plated on the first primer layer. Subsequently, a nitrogen-doped diamond-like carbon film layer with a thickness of 10 nm is plated on the first barrier layer. Then, a second barrier layer and a second primer layer with a stacked structure of SiC / SiO2 are plated on the nitrogen-doped diamond-like carbon film layer. The total thickness of the two is 10 nm. Finally, a 15 nm thick AF anti-fingerprint layer is evaporated on the second primer layer to obtain a glass panel with a stacked structure of glass / SiO2 / SiC / nitrogen-doped diamond-like carbon film layer / SiC / SiO2 / AF.

[0125] The performance test is as follows:

[0126] 1. Transmittance test:

[0127] FIG11 is a transmittance curve of the glass panel prepared in Example 3.

[0128] 2. Hardness test:

[0129] Mohs hardness 6 passes, Mohs hardness 7 passes, and Mohs hardness 8 fails.

[0130] 3. Friction resistance test:

[0131] Resistant to rubber friction for more than 10,000 times.

[0132] 4. Color difference test:

[0133] Test results: The color difference before and after coating is less than 0.5.

[0134] From the above results, it can be seen that the glass panel of the embodiment of the present application has a composite film layer with a specific structure having a thickness of less than 100 nm provided on the surface of the glass panel substrate. The transmittance of the glass panel changes little before and after coating, and the transmittance is still relatively high after coating the composite film layer, indicating that the composite film layer of the embodiment of the present application has little effect on the transmittance of the glass panel; the composite film layer has a high Mohs hardness, which can improve the scratch resistance of the glass panel; the composite film layer has strong adhesion to the glass panel substrate, and the composite film layer does not fall off after being rubbed with an eraser more than 10,000 times. In this way, the composite film layer can be firmly bonded to the surface of the glass panel substrate during service, providing long-term protection for the substrate.

[0135] It should be understood that the first, second and various numerical numbers involved in this document are only distinguished for the convenience of description and are not intended to limit the scope of this application.

[0136] In this application, "and / or" describes the relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, and B exists alone. A and B can be singular or plural. The character " / " generally indicates that the related objects are in an "or" relationship.

[0137] In this application, "at least one" means one or more, and "more than one" means two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, "at least one of a, b, or c", or "at least one of a, b, and c" can all mean: a, b, c, ab (i.e., a and b), ac, bc, or abc, where a, b, and c can be single or multiple.

[0138] In this application, “-” represents a range value, including the endpoint values ​​at both ends. For example, the value of a can be 0.5-15, which means that the value of a can be between 0.5 and 15, and includes the endpoint values ​​0.5 and 15.

[0139] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. Some or all of the steps can be executed in parallel or sequentially. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Claims

1. A glass panel, characterized in that: It comprises a glass panel substrate and a composite film layer arranged on the surface of the glass panel substrate, wherein the composite film layer comprises a first primer layer, a first barrier layer, a diamond-like film layer, a second barrier layer, a second primer layer and an anti-fingerprint layer which are sequentially stacked; The materials of the first primer layer and the second primer layer are independently selected from one or more of silicon oxide and aluminum oxide, and the materials of the first barrier layer and the second barrier layer are independently selected from SiN x , CN x 、SiC x 、SiN x C y One or more of, wherein the values ​​of x and y are in the range of 1-6; the thickness of the first coating layer is 2nm-30nm, the thickness of the first barrier layer is 1nm-20nm, the thickness of the diamond-like film layer is 3nm-40nm, the thickness of the second barrier layer is 1nm-20nm, the thickness of the second coating layer is 2nm-30nm, the thickness of the anti-fingerprint layer is less than or equal to 20nm, and the thickness of the composite film layer is less than 100nm.

2. The glass panel according to claim 1, wherein: The composite film layer also includes a first optical film layer arranged between the first primer layer and the first barrier layer, and / or a second optical film layer arranged between the second primer layer and the second barrier layer; the first optical film layer and the second optical film layer are used to adjust the transmittance of the glass panel.

3. The glass panel according to claim 2, wherein: The thickness of the first optical film layer is 5nm-30nm; the thickness of the second optical film layer is 5nm-20nm.

4. The glass panel according to claim 2 or 3, characterized in that: The first optical film layer and the second optical film layer are a laminated structure formed by two or more sub-layers, and the material of each sub-layer is selected from oxides, nitrides, SiAl2O3, SiAl2O3, and SiAl2O3 of silicon, aluminum, niobium, titanium or zirconium. x O y N z Any one or more of the following, where the values ​​of x, y, and z are in the range of 1-6.

5. The glass panel according to claim 4, wherein: The first optical film layer includes at least one first sublayer and at least one second sublayer alternately stacked, and the first sublayer and the second sublayer have different refractive indices.

6. The glass panel according to claim 5, wherein: The number of layers of the first sub-layer is 1-12, and the number of layers of the second sub-layer is 1-12.

7. The glass panel according to claim 4, wherein: The second optical film layer includes at least one third sublayer and at least one fourth sublayer alternately stacked, and the third sublayer and the fourth sublayer have different refractive indices.

8. The glass panel according to claim 7, wherein: The number of layers of the third sub-layer is 1-12, and the number of layers of the fourth sub-layer is 1-12.

9. The glass panel according to any one of claims 1 to 8, characterized in that: The silicon oxide includes one or more of SiO2 and SiO; the aluminum oxide includes Al2O3.

10. The glass panel according to any one of claims 4 to 8, characterized in that: The niobium oxide includes one or more of NbO, NbO2, Nb2O3, and Nb2O5; the titanium oxide includes TiO2; the zirconium oxide includes ZrO2; the silicon nitride includes Si3N4; the aluminum nitride includes AlN; the niobium nitride includes one or two of NbN and Nb2N, the titanium nitride may be TiN, TiN2, Ti2N, Ti3N, Ti4N, Ti3N4, Ti3N5, and Ti5N6, and the zirconium nitride includes ZrN.

11. The glass panel according to any one of claims 1 to 10, characterized in that: The diamond-like film layer includes a diamond-like film doped with any one or more doping elements of silicon, aluminum, titanium, zirconium, molybdenum, nitrogen and hydrogen.

12. The glass panel according to any one of claims 1 to 11, characterized in that: The atomic percentage of non-carbon elements in the diamond-like carbon film layer is less than 40%.

13. The glass panel according to any one of claims 1 to 12, characterized in that: The sp3 hybrid bonds in the diamond-like carbon film layer account for more than 30% of the total amount of sp2 hybrid bonds and sp3 hybrid bonds.

14. The glass panel according to any one of claims 1 to 13, characterized in that: The Mohs hardness of the glass panel is greater than or equal to 7.

15. The glass panel according to any one of claims 1 to 14, characterized in that: The composite film layer can withstand rubber friction on the glass panel substrate for more than 10,000 times without falling off.

16. The glass panel according to any one of claims 1 to 15, characterized in that: The color difference ΔE between the glass panel and the glass panel substrate is less than 1.

5.

17. The glass panel according to any one of claims 1 to 16, characterized in that: The average transmittance of the glass panel within the wavelength range of 450nm-940nm is greater than or equal to 85%.

18. The glass panel according to any one of claims 1 to 17, characterized in that: The 550nm transmittance reduction value of the glass panel relative to the glass panel substrate is less than 0.5%, or the 550nm transmittance of the glass panel is greater than or equal to the 550nm transmittance of the glass panel substrate.

19. A method for preparing a glass panel, characterized in that: include: A composite film layer is plated on the surface of the glass panel substrate, wherein the composite film layer includes a first primer layer, a first barrier layer, a diamond-like film layer, a second barrier layer, a second primer layer and an anti-fingerprint layer which are stacked in sequence; The first primer layer, the first barrier layer, the diamond-like carbon film layer, the second barrier layer and the second primer layer are prepared by magnetron sputtering, and the anti-fingerprint layer is prepared by evaporation; the materials of the first primer layer and the second primer layer are independently selected from one or more of silicon oxide and aluminum oxide, and the materials of the first barrier layer and the second barrier layer are independently selected from SiN x , CN x 、SiC x 、SiN x C y One or more of, wherein the values ​​of x and y are in the range of 1-6; the thickness of the first coating layer is 2nm-30nm, the thickness of the first barrier layer is 1nm-20nm, the thickness of the diamond-like film layer is 3nm-40nm, the thickness of the second barrier layer is 1nm-20nm, the thickness of the second coating layer is 2nm-30nm, the thickness of the anti-fingerprint layer is less than or equal to 20nm, and the thickness of the composite film layer is less than 100nm.

20. The preparation method according to claim 19, characterized in that: The composite film layer also includes: A first optical film layer is disposed between the first primer layer and the first barrier layer, and / or a second optical film layer is disposed between the second primer layer and the second barrier layer; the first optical film layer and the second optical film layer are prepared by magnetron sputtering.

21. A display screen, characterized in that: It comprises a display screen module and a glass panel covering the display screen module, wherein the glass panel comprises the glass panel according to any one of claims 1 to 18.

22. A terminal, characterized in that: It comprises a shell and a circuit board located inside the shell, the shell comprises a display screen, the display screen comprises a glass panel and a display screen module arranged inside the glass panel, and the glass panel comprises the glass panel according to any one of claims 1-18.

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