Anti-aging film-coated cover plate, electronic equipment and vehicle display equipment

Abstract

The utility model discloses an anti-aging film-coated cover plate which comprises a glass substrate and a composite film-coated layer arranged on the front surface of the glass substrate, the composite coating layer is formed by sequentially overlapping the following structures: a silicon nitride bottom layer with the thickness of 50-100 nanometers and used for enhancing physical protection and wear resistance; the thickness of the silicon dioxide middle layer is 200-300 nanometers, and the silicon dioxide middle layer is used for enhancing optical performance and providing chemical protection; and the polyvinylidene fluoride top layer is 4-6 microns thick and is used for providing additional physical protection and enhancing durability. The composite coating layer adopts a three-layer structural design, and the silicon nitride bottom layer provides firm physical and chemical protection for the glass cover plate due to excellent hardness, wear resistance and chemical stability; the silicon dioxide middle layer has good optical transparency and chemical stability, so that the optical performance of the glass cover plate is enhanced, and the weather resistance and the aging resistance of the glass cover plate are improved; the polyvinylidene fluoride top layer provides additional physical protection for the internal coating layer due to the outstanding chemical stability and thermal stability of the polyvinylidene fluoride top layer.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of display screen, concretely relates to an anti-aging coated cover plate, electronic equipment and vehicle display equipment. BACKGROUND

[0002] With the rapid development of modern science and technology, glass cover plates are increasingly widely used in the fields of electronic devices and vehicle display equipment. Traditional glass cover plates usually rely on single-layer coating or relatively simple composite coating design to enhance their performance. However, there are the following significant deficiencies in the prior art:

[0003] Insufficient wear resistance: traditional glass cover plates are easily scratched or worn in daily use, leading to a decline in surface quality and affecting the appearance and service life. Although existing technologies improve wear resistance by coating hard materials on the glass surface, the adhesion of these materials to the glass is limited, and they are prone to fall off or fail in long-term use.

[0004] Limited optical performance: ordinary coating technology cannot balance high light transmittance and low reflectivity, limiting the visual experience of the display screen, especially in high light environments, which is prone to glare problems. In addition, these coating materials have poor optical stability and may yellow or fog in harsh environments, further affecting the display effect.

[0005] Poor chemical stability: existing coated glass has limited resistance to acids, bases and other chemicals, and is easily corroded in harsh environments, weakening the protective effect of the cover plate and increasing maintenance and replacement costs.

[0006] Insufficient weather resistance and anti-aging ability: many glass cover plates have a significant performance degradation in environments with long-term sunlight exposure, high temperature and humidity, manifested in cracking, peeling or performance degradation of the coating layer, which cannot meet the durability requirements of high-end applications.

[0007] Lack of additional physical protection: although some coating technologies provide physical protection by thickening the coating or using organic materials, these methods often fail to significantly improve the scratch resistance and overall durability of the glass cover plate due to the inherent weakness or lack of thermal stability of the materials.

[0008] Based on the above deficiencies, the prior art cannot effectively meet the comprehensive needs of glass cover plates in terms of wear resistance, optical performance, chemical stability, weather resistance and physical protection. This not only limits its widespread application in high-end electronic devices and vehicle display fields, but also increases production and maintenance costs to some extent. Therefore, a new composite coating design is urgently needed to improve the use effect and reliability of glass cover plates to solve the above technical problems. SUMMARY

[0009] The purpose of the present application is to solve the problems in the prior art, and provide an anti-aging coated cover plate, electronic device and vehicle display device with excellent optical performance and chemical stability, which can improve the durability and reliability of the glass cover plate through a three-layer composite coating structure.

[0010] To solve the above technical problems, the technical method adopted by the present application is: the present application discloses an anti-aging coated cover plate, characterized in that: comprising a glass substrate and a composite coating layer arranged on the front surface of the glass substrate; the composite coating layer is composed of the following structures in turn:

[0011] a silicon nitride bottom layer with a thickness of 50-100 nanometers, used for enhancing physical protection and wear resistance;

[0012] a silicon dioxide intermediate layer with a thickness of 200-300 nanometers, used for enhancing optical performance and providing chemical protection;

[0013] a polyvinylidene fluoride top layer with a thickness of 4-6 microns, used for providing additional physical protection and enhancing durability.

[0014] Further, the silicon nitride bottom layer is of a dense structure, and its cross-sectional shape is a regular rectangular array, so as to improve wear resistance and bonding stability.

[0015] Further, the surface of the silicon dioxide intermediate layer is provided with a nanoscale wavy protrusion, used for improving optical performance and reducing light reflection.

[0016] Further, the surface of the polyvinylidene fluoride top layer has a micro concave pattern with a diameter of 10-50 microns and a depth of 2-10 microns, used for reducing surface friction.

[0017] Further, the edge of the glass substrate is chamfered with a chamfer angle of 15°-45°, so as to improve structural stability and holding comfort;

[0018] The edge of the silicon dioxide intermediate layer is designed with a round corner transition, so as to reduce stress concentration;

[0019] The outer surface of the polyvinylidene fluoride top layer is attached with an anti-glare coating, used for enhancing visual experience.

[0020] The present application also discloses a smart device comprising the above anti-aging coated cover plate.

[0021] Further, the smart device is a mobile phone, and the coated cover plate is used for protecting the display screen.

[0022] Further, the smart device is a tablet computer, and the coated cover plate is used for improving the durability of the display screen.

[0023] The present invention also discloses a vehicle display device using a cover plate based on the above-mentioned anti-aging coating.

[0024] Furthermore, the glass substrate of the vehicle display device has an arc-shaped design with a bending radius of 5-20 mm, and the total thickness of the composite coating layer is 5-7 micrometers, which is used to reduce the overall weight of the cover plate.

[0025] Beneficial effects:

[0026] The composite coating layer of this patent adopts a three-layer structure design, including a silicon nitride bottom layer, a silicon dioxide intermediate layer, and a polyvinylidene fluoride top layer. The silicon nitride bottom layer, with its excellent hardness, abrasion resistance, and chemical stability, provides solid physical and chemical protection for the glass cover plate; the silicon dioxide intermediate layer, with its good optical transparency and chemical stability, enhances the optical performance of the glass cover plate and further improves its weather resistance and anti-aging ability; the polyvinylidene fluoride top layer, with its outstanding chemical and thermal stability, provides additional physical protection for the inner coating layer, while resisting the erosion of chemical substances.

[0027] Through this three-layer structure design and optimization, the composite coating layer of this patent achieves a comprehensive improvement in the performance of the glass cover. Its excellent wear resistance, optical properties, and chemical stability enable it to maintain stable performance in various harsh environments; its weather resistance and anti-aging capabilities further extend the service life of the glass cover.

[0028] In addition, the coating technology of this patent has the advantages of simple process, low cost and easy mass production, and has broad market application prospects. Attached Figure Description

[0029] Figure 1 This is a cross-sectional structural diagram of the anti-aging coated cover plate of this utility model. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0031] like Figure 1 As shown, an anti-aging coated cover plate includes:

[0032] Glass substrate 1 serves as the main support for the cover plate;

[0033] The composite coating layer is composed of the following three layers stacked sequentially:

[0034] Silicon nitride substrate 2, with a thickness of 50-100 nanometers, is used to enhance physical protection and wear resistance;

[0035] Silicon dioxide middle layer 3, thickness 200-300 nanometers, enhances optical performance and provides chemical protection;

[0036] Polyvinylidene fluoride top layer 4, thickness 4-6 micrometers, provides additional physical protection and enhances durability.

[0037] Among them, the silicon nitride bottom layer 2 is a dense structure, and the cross-sectional shape is a regular rectangular arrangement to improve wear resistance and bonding stability.

[0038] The silicon dioxide middle layer 3 surface is provided with nanoscale wavy protrusions to improve optical performance and reduce light reflection.

[0039] The polyvinylidene fluoride top layer 4 surface has a micro concave pattern with a diameter of 10-50 micrometers and a depth of 2-10 micrometers to reduce surface friction.

[0040] The glass substrate 1 edge is chamfered with a chamfer angle of 15°-45° to improve structural stability and holding comfort.

[0041] The silicon dioxide middle layer 3 edge adopts a round corner transition design to reduce stress concentration; the polyvinylidene fluoride top layer 4 outer surface is attached with an anti-reflection coating to further improve visual experience.

[0042] In the present coated cover plate, the silicon nitride bottom layer 2 provides excellent wear resistance, significantly reducing the impact of scratching and wear on the glass cover plate, the silicon dioxide middle layer 3 improves light transmission and reduces light reflection, enhancing visual experience, and the polyvinylidene fluoride top layer 4 is used to reduce surface friction, the three-layer structure works together to make the cover plate can resist chemical erosion for a long time.

[0043] The present coated cover plate process is simple, low cost, and can be used for various intelligent devices and vehicle display devices.

[0044] An intelligent device comprising the above anti-aging coated cover plate, further subdivided into:

[0045] Mobile phone: the coated cover plate is used to protect the display screen.

[0046] Tablet: the coated cover plate improves the durability of the display screen.

[0047] A vehicle display device comprising the above anti-aging coated cover plate, characterized by:

[0048] The glass substrate 1 has an arc-shaped design with a bending radius of 5-20 millimeters;

[0049] The total thickness of the composite coated layer is 5-7 micrometers to reduce the overall weight of the cover plate.

[0050] Example 1: Preparation of an anti-aging coated cover plate

[0051] High transparent glass is selected as the substrate, and after cleaning and surface treatment, a silicon nitride layer, a silicon dioxide layer and a polyvinylidene fluoride layer are coated in sequence.

[0052] Coating conditions:

[0053] The silicon nitride layer is prepared by physical vapor deposition (PVD), and the thickness is controlled at about 75 nanometers;

[0054] The silicon dioxide layer is prepared by chemical vapor deposition (CVD), and the thickness is 250 nanometers, and the surface wave-shaped protrusions are formed by adjusting the deposition parameters;

[0055] The polyvinylidene fluoride top layer 4 is prepared by spraying process, and the thickness is 5 microns, and the micro concave pattern is etched.

[0056] Example 2: applied to intelligent equipment

[0057] The coated cover plate prepared in Example 1 is used for the display screen protection layer test of a certain brand of mobile phone. The results show that the cover plate has no obvious wear after continuous use for 500 hours, the light transmittance of the display screen is increased by 15%, and the chemical corrosion resistance is significantly enhanced.

[0058] Example 3: applied to vehicle display equipment

[0059] The coated cover plate is applied to the central control display screen of a certain vehicle model. The test shows that the arc design and composite coating layer of the coated cover plate significantly reduce the reflection and improve the driving safety, and maintain stable performance in high temperature environment.

[0060] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An anti-aging coated cover plate, characterized in that: It includes a glass substrate and a composite coating layer disposed on the front side of the glass substrate; the composite coating layer is composed of the following structures stacked sequentially: The silicon nitride substrate has a thickness of 50-100 nanometers. The silicon dioxide intermediate layer has a thickness of 200-300 nanometers; The top layer is made of polyvinylidene fluoride and has a thickness of 4-6 micrometers.

2. The anti-aging coated cover plate according to claim 1, characterized in that: The silicon nitride substrate has a dense structure with a cross-sectional shape of regular rectangular arrangement.

3. The anti-aging coated cover plate according to claim 1, characterized in that: The surface of the silica intermediate layer has nanoscale wavy protrusions, which improve optical performance and reduce reflection.

4. The anti-aging coated cover plate according to claim 1, characterized in that: The surface of the polyvinylidene fluoride top layer has a micro-recessed pattern with a diameter of 10-50 micrometers and a depth of 2-10 micrometers, which reduces surface friction.

5. The anti-aging coated cover plate according to claim 1, characterized in that: The edges of the glass substrate are chamfered at an angle of 15°-45° to improve structural stability.

6. An electronic device, characterized in that: Including the anti-aging coated cover plate as described in any one of claims 1-5.

7. The electronic device according to claim 6, characterized in that: The electronic device is a mobile phone, and the coated cover is used to protect its display screen.

8. The electronic device according to claim 6, characterized in that: The electronic device is a tablet computer, and the coated cover plate is used to improve the durability of the display screen.

9. A vehicle display device, characterized in that: Including the anti-aging coated cover plate as described in any one of claims 1-5.

10. The vehicle display device according to claim 9, characterized in that: The glass substrate of the vehicle display device has an arc-shaped design with a bending radius of 5-20 mm, and the total thickness of the composite coating layer is 5-7 micrometers, which is used to reduce the overall weight of the cover plate.

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