Scratch-resistant superhard display glass panel

Abstract

The utility model relates to vacuum coated glass technical field, concretely relates to a kind of superhard scratch-resistant display glass panel, the glass panel includes: glass substrate, silicon oxide and oxygen are strengthened layer, nano ceramic antireflection film stack, low roughness silicon oxide film layer, silicon oxide film layer and AF oil stain and fingerprint prevention film layer that are sequentially arranged on the glass substrate;The nano ceramic antireflection film stack is alternately laminated by low refractive index material and high refractive index material;The silicon oxide film layer is used to enhance surface smoothness characteristics.The utility model aims at providing a kind of superhard scratch-resistant display glass panel with ultrahigh hardness, excellent optical properties, outstanding stain resistance and wear resistance.

Description

Technical Field

[0001] This utility model relates to the field of vacuum coated glass technology, specifically to an ultra-hard, scratch-resistant display glass panel. Background Technology

[0002] In modern society, mobile phones have become indispensable electronic devices for people to obtain information and communicate. As the main interface for interaction between mobile phones and users, the performance of the glass panel (or protective film) directly affects the user experience and product lifespan. Currently, the market has increasingly stringent requirements for mobile phone panels, demanding not only that they be thin, impact-resistant, have high light transmittance and low reflectivity, but also extremely high standards for their surface hardness, scratch resistance, wear resistance, and ability to resist fingerprints and oil stains.

[0003] While existing technologies can improve certain properties of glass panels through various means, they often struggle to achieve a balance. For example, some antireflective coatings offer excellent optical performance but lack sufficient hardness and abrasion resistance; conversely, some hardened coatings may negatively impact optical performance or complicate manufacturing processes and increase costs. Therefore, developing a technological solution that can systematically and efficiently improve the overall performance of glass panels has significant market value and practical implications. Summary of the Invention

[0004] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide an ultra-hard and scratch-resistant display glass panel that integrates ultra-high hardness, excellent optical properties, and excellent anti-fouling and wear resistance.

[0005] This utility model is achieved through the following technical solution: An ultra-hard, scratch-resistant display glass panel, comprising: A glass substrate, a silicon oxynitride reinforcing layer, a nano-ceramic antireflective film stack, a low-roughness silicon oxide film layer, a silicon oxide film layer, and an AF anti-oil and anti-fingerprint film layer are sequentially disposed on the glass substrate. The nano-ceramic antireflective film stack is composed of alternating layers of low-refractive-index and high-refractive-index materials; The silicon oxide film is used to enhance surface smoothness.

[0006] The thickness of the silicon oxynitride reinforcing layer is 0.5 to 1.5 micrometers.

[0007] The nano-ceramic antireflective film stack consists of 4 to 17 alternating layers of silicon oxynitride and silicon nitride.

[0008] The thickness of the silicon oxide film is 10 to 20 nanometers, and its average surface roughness is less than 0.5 nanometers.

[0009] The thickness of the AF anti-oil and anti-fingerprint film layer is 30-100 nanometers.

[0010] The low-roughness silicon oxide film is a low-roughness silicon oxide layer etched by carbon tetrafluoride.

[0011] The beneficial effects of this utility model are: This invention relates to an ultra-hard, scratch-resistant display glass panel. It enhances scratch resistance by applying a silicon oxynitride reinforcing layer to the glass substrate. Furthermore, it utilizes alternating layers of high and low refractive index materials in a nano-ceramic antireflective film stack. By employing the principle of thin-film interference, light reflections at the multi-layer interface cancel each other out, significantly reducing the reflectivity of the glass surface and increasing light transmittance. The addition of a low-roughness silicon oxide film layer and a dual transition layer of silicon oxide film further strengthens the adhesion and density of the anti-fingerprint film, resulting in a significantly longer anti-fingerprint capability and longer abrasion resistance than traditional processes. Combined with the anti-oil and anti-fingerprint film layer, the overall user experience of this display glass panel is enhanced. Attached Figure Description

[0012] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of the panel glass in one embodiment of the present invention.

[0014] Figure Labels Glass substrate--101, silicon oxynitride reinforcing layer--102, nano-ceramic antireflective film stack--103, silicon oxide film layer--104, AF anti-oil and anti-fingerprint film layer--105, low roughness silicon oxide film layer--106. Detailed Implementation

[0015] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0016] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0017] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0018] like Figure 1 As shown, this embodiment discloses an ultra-hard scratch-resistant display glass panel, the structure of which is a multi-layer thin film structure stacked sequentially from bottom to top (i.e. from the glass substrate 101 outwards).

[0019] First layer: Glass substrate 101 (substrate) The glass substrate 101 is the supporting foundation of the entire panel. It can be made of aluminosilicate glass, lithium aluminosilicate glass, etc., which are commonly used in the art. It is usually chemically strengthened to improve its basic toughness.

[0020] The second layer: A silicon oxynitride (SiON) reinforcing layer 102 is formed on top of the glass substrate 101. This layer is fundamental to achieving the ultra-hard and scratch-resistant function. SiON is a high-hardness, high-density ceramic material. A SiON film with a thickness preferably between 0.5 and 1.5 micrometers is formed on the glass surface through processes such as physical vapor deposition (PVD) or chemical vapor deposition (CVD). This thickness of ceramic layer can effectively disperse the pressure of external sharp objects, preventing them from directly contacting and damaging the underlying glass substrate 101.

[0021] The third layer: A nano-ceramic antireflective film stack 103 is disposed on top of the silicon oxynitride reinforcing layer 102. This film stack simultaneously performs the dual functions of antireflection and maintaining hardness.

[0022] Antireflection principle: Its optical principle is based on thin-film interference. It consists of alternating layers of at least two materials with different refractive indices: a low refractive index (LRI) material and a high refractive index (HRI) material. Preferably, the film stack can consist of 4 to 17 alternating layers of silicon oxynitride (SiON, as the LRI material) and silicon nitride (SiN, as the HRI material). By precisely controlling the optical thickness of each layer (typically a multiple of 1 / 4 wavelength), the light waves reflected from the interfaces of each layer cancel each other out due to interference, thereby minimizing the total reflected light energy and maximizing the transmitted light energy.

[0023] Since both SiON and SiN are high-hardness ceramic materials, this antireflective coating stack maintains extremely high hardness while achieving optical functions, and together with the second layer (reinforcing layer), it forms the scratch-resistant system of the panel.

[0024] The fourth layer: A low-roughness silicon oxide film layer 106 is formed on top of the nano-ceramic antireflective film stack 103. This layer is one of the key transition layers for achieving a firm bond between the final AF anti-oil and anti-fingerprint film layer 105.

[0025] Functional Principle: The surface of the ceramic film stack (third layer) deposited by PVD or CVD processes inevitably has a certain degree of micro-roughness. If an AF anti-oil and anti-fingerprint film layer 105 is directly deposited on this layer, the bonding of the AF anti-oil and anti-fingerprint film layer 105 will be uneven and loose. Therefore, the main purpose of this layer is to perform "planarization treatment". Preferably, this layer can be processed by, for example, carbon tetrafluoride plasma etching to treat the underlying ceramic layer, or by depositing a silicon oxide film with planarization properties to significantly reduce its surface roughness.

[0026] Fifth layer: Silicon oxide film layer 104. On top of the low-roughness silicon oxide film layer 106, another silicon oxide film layer 104 is set. This is the direct bonding substrate for the AF anti-oil and anti-fingerprint film layer 105.

[0027] Functional Principle: The outermost AF anti-oil and anti-fingerprint film layer 105 (usually a fluorosilane-based organic compound) needs to bond firmly to the substrate through chemical bonds (e.g., Si-O-Si bonds). However, the AF anti-oil and anti-fingerprint film layer 105 has poor chemical compatibility with the third layer (such as SiN) or the fourth layer, resulting in weak adhesion. The pure silicon dioxide film layer provided in this invention offers a high-density, high-purity, and chemically active silicon dioxide bonding interface for the AF anti-oil and anti-fingerprint film layer 105. Preferably, the thickness of this layer is controlled between 10 and 20 nanometers, ensuring that its average surface roughness (Ra) is less than 0.5 nanometers. This ultra-smooth surface allows the molecules of the AF anti-oil and anti-fingerprint film layer 105 to arrange themselves more regularly, forming a dense oleophobic and hydrophobic layer and achieving maximum adhesion.

[0028] The sixth layer: AF anti-oil and anti-fingerprint film layer 105. Above the ultra-smooth silicon oxide film layer 104, the outermost AF anti-oil and anti-fingerprint film layer 105 is formed. This layer material is typically a silane coupling agent containing fluorine groups. One end of its molecule (silane end) reacts chemically with the fifth layer (silicon oxide film layer 104) and bonds firmly, while the other end (fluorine-containing group) faces outward, forming a coating with extremely low surface energy. This low surface energy makes it difficult for water droplets (hydrophobic) and oil stains (oleophobic) to spread on its surface, making them easy to slide off or wipe away, thus achieving anti-fingerprint and easy-to-clean effects. Preferably, its thickness is controlled between 30 and 100 nanometers to achieve optimal wear resistance life while ensuring that optical performance is not affected.

[0029] In summary, this embodiment achieves a display glass panel with top-level performance in terms of hardness, scratch resistance, optical properties, and anti-fouling properties through a multi-layer film system precision design from substrate to surface, especially by introducing a SiON reinforcing layer and nano-ceramic AR stacking, and by solving the adhesion problem between the high-hardness ceramic layer and the AF anti-oil and anti-fingerprint film layer 105 through an innovative double-layer silicon oxide transition layer.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A super-hard, scratch-resistant display glass panel, characterized in that, include: A glass substrate, a silicon oxynitride reinforcing layer, a nano-ceramic antireflective film stack, a low-roughness silicon oxide film layer, a silicon oxide film layer, and an AF anti-oil and anti-fingerprint film layer are sequentially disposed on the glass substrate. The nano-ceramic antireflective film stack is composed of alternating layers of low-refractive-index and high-refractive-index materials; The silicon oxide film is used to enhance surface smoothness.

2. The ultra-hard scratch-resistant display glass panel according to claim 1, characterized in that, The thickness of the silicon oxynitride reinforcing layer is 0.5 to 1.5 micrometers.

3. The ultra-hard scratch-resistant display glass panel according to claim 1, characterized in that, The nano-ceramic antireflective membrane stack consists of 4 to 17 alternating layers of silicon oxynitride and silicon nitride.

4. The ultra-hard scratch-resistant display glass panel according to claim 1, characterized in that, The thickness of the silicon oxide film is 10 to 20 nanometers, and its average surface roughness is less than 0.5 nanometers.

5. The ultra-hard scratch-resistant display glass panel according to claim 1, characterized in that, The thickness of the AF anti-oil and anti-fingerprint film is 30-100 nanometers.

6. The ultra-hard scratch-resistant display glass panel according to claim 1, characterized in that, The low-roughness silicon oxide film is a low-roughness silicon oxide layer etched with carbon tetrafluoride.

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