Multifunctional glass cover plate and liquid crystal display screen

Abstract

The utility model discloses a multifunctional glass cover plate and liquid crystal display screen, wherein, multifunctional glass cover plate includes glass substrate and sets up multilayer film coating structure at glass substrate surface, and its characterized in that: multilayer film coating structure includes the blocking layer, intermediate functional layer, transition layer, ink layer that are stacked upwards from glass substrate surface in proper order, the blocking layer adopts boron trioxide, can block glass substrate is eroded by subsequent process or environment, the intermediate functional layer adopts silicon nitride, can protect glass substrate surface from being scratched and corroded, the transition layer adopts chromium trioxide, can increase optical transmission, the ink layer adopts water changeable ink, when meeting water or humidity, its color will change. This structure not only enhanced the durability of cover plate, still through the optimization of optical performance and the integration of special function, has improved the added value of product and user experience significantly.

Description

Technical Field

[0001] This utility model relates to the field of liquid crystal display technology, and in particular to a multifunctional glass cover and a liquid crystal display screen. Background Technology

[0002] The glass cover is the outermost transparent glass component of the LCD screen, serving as the surface protective layer of the LCD module. It primarily protects the underlying LCD screen assembly and optimizes functionality. Typically made from ultra-thin flat glass through cutting, strengthening, and coating processes, it is the part of the LCD module that directly contacts the external environment. Structurally, it may independently cover the screen or be integrated with the casing for overall protection. The core functions of the glass cover include: 1. Physical protection: resisting external impacts and scratches, preventing screen failure due to mechanical damage; isolating environmental pollutants such as dust and oil, extending screen lifespan. 2. Touch optimization: providing a smooth touch experience; some high-end covers achieve fingerprint resistance through surface treatments (such as AF coating), reducing fingerprint residue. 3. Reducing strong light reflection interference, enhancing light transmittance and display contrast. 4. Structural and integration adaptation: integrating decorative printing and touch sensors, supporting narrow bezel designs; using full lamination technology to eliminate air gaps, avoiding diffuse reflection and improving water resistance.

[0003] With technological advancements and consumers' growing demand for both functionality and aesthetics, traditional glass covers are no longer sufficient to meet market demands for advanced features such as waterproofing and environmentally sensitive color-changing displays. While various coating technologies are currently applied to glass surfaces to enhance their performance, a multifunctional glass cover integrating waterproof markings, environmentally sensitive displays, and superior durability is lacking. Therefore, developing a multi-layered coating structure to improve the functionality and market competitiveness of glass covers has become an urgent technological need. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of the existing technology by providing a multifunctional glass cover and an LCD screen.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] In a first aspect, a multifunctional glass cover is provided, comprising a glass substrate and a multilayer coating structure disposed on the surface of the glass substrate, characterized in that: the multilayer coating structure comprises a barrier layer, an intermediate functional layer, a transition layer, and an ink layer stacked sequentially upward from the surface of the glass substrate; the barrier layer is a boron trioxide layer, which can prevent the glass substrate from being eroded by subsequent processes or the environment; the intermediate functional layer is a silicon nitride layer, which can protect the surface of the glass substrate from scratches and corrosion; the transition layer is a chromium trioxide layer, which can increase optical transmittance; and the ink layer is a water-sensitive color-changing ink layer, whose color changes when exposed to water or moisture.

[0007] Furthermore, the glass substrate is provided with a visible area and a non-visible area, and the ink layer is located above the non-visible area.

[0008] Furthermore, the visible area is located in the middle of the glass substrate, and the non-visible area is located outside the visible area.

[0009] Furthermore, the ink layer is screen-printed along the edge of the transition layer along the non-visible area to form a ring structure.

[0010] Furthermore, the shape and size of the barrier layer, intermediate functional layer, and transition layer are the same as the shape and size of the glass substrate surface.

[0011] Furthermore, the thickness of the barrier layer is 50-100 nm.

[0012] Furthermore, the thickness of the intermediate functional layer is 200-300 nm.

[0013] Furthermore, the thickness of the transition layer is 100-200 nm.

[0014] Furthermore, the thickness of the ink layer is 8-10 μm.

[0015] In a second aspect, a liquid crystal display screen is provided, characterized in that it includes the multifunctional glass cover plate described in the first aspect.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] The glass cover employs a multi-layered coating structure. Through precise control of the material selection and thickness design of each functional layer, it achieves the dual functions of waterproof indication and environmentally sensitive color-changing display. The bottom glass substrate provides a stable support base; the boron trioxide layer acts as a barrier layer, effectively isolating external corrosion; the silicon nitride layer, with its high hardness, wear resistance, and corrosion resistance, protects the glass from physical damage; the chromium trioxide layer further optimizes optical performance and serves as a smooth transition for the ink layer; the topmost water-sensitive ink layer changes color upon contact with water or moisture, providing intuitive waterproof indication or environmental sensitivity display. This structure not only enhances the cover's durability but also significantly improves the product's added value and user experience through optimized optical performance and the integration of special functions.

[0018] Other features and advantages of this invention will be set forth in the following description or may be learned by practicing this invention. Attached Figure Description

[0019] Figure 1 This is a front view of Embodiment 1 of the present utility model;

[0020] Figure 2 This is a cross-sectional structural diagram of Example 1.

[0021] In the figure: 1-glass substrate, 2-barrier layer, 3-intermediate functional layer, 4-transition layer, 5-ink layer. Detailed Implementation

[0022] To enhance understanding of this utility model, we will now describe it in further detail with reference to the accompanying drawings. This embodiment is only used to explain this utility model and does not constitute a limitation on the scope of protection of this utility model.

[0023] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," "fixing," and "setting," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Example 1

[0026] like Figure 1 , 2 As shown, a multifunctional glass cover includes a glass substrate 1 and a multilayer coating structure disposed on the surface of the glass substrate 1. The multilayer coating structure includes a barrier layer 2, an intermediate functional layer 3, a transition layer 4, and an ink layer 5 stacked sequentially upward from the surface of the glass substrate 1.

[0027] The glass substrate 1, located at the lowest layer, serves as the support for the entire multilayer coating structure. It is made of a material with high light transmittance, good mechanical strength, and chemical stability, such as tempered glass. A visible area and a non-visible area are formed on the glass substrate 1. The visible area is located in the middle of the glass substrate 1, and the non-visible area is located outside the visible area.

[0028] As the coating layer closest to the glass substrate 1, the barrier layer 2 is made of boron trioxide. Boron trioxide has good thermal and chemical stability, making it a good barrier layer 2 to prevent the underlying glass substrate 1 from being corroded by subsequent processes or the environment. It also provides some optical performance adjustment. The thickness of the barrier layer 2 is 50-100 nm.

[0029] The intermediate functional layer 3, located above the barrier layer 2, is made of silicon nitride. Silicon nitride is a high-hardness, high-wear-resistance, and corrosion-resistant material that effectively protects the surface of the glass cover from scratches and corrosion. It also possesses excellent insulation properties and a certain degree of optical transmittance, making it suitable as the intermediate functional layer 3. The thickness of the intermediate functional layer 3 is 200-300 nm.

[0030] The transition layer 4, located above the intermediate functional layer 3, is made of chromium trioxide. Chromium trioxide has good optical properties and chemical stability. In this structure, it can also be used to increase transmission characteristics and serve as a transition layer with the upper ink layer 5. The thickness of the transition layer 4 is 100-200 nm.

[0031] The ink layer 5, located above the transition layer 4, is the outermost layer of the multi-layer coating structure. The ink layer 5 is screen-printed along the edge of the transition layer 4 above the non-visible area, forming a ring structure. The ink layer 5 uses water-sensitive color-changing ink, a special functional ink whose color changes when exposed to water or moisture, thus serving as an indicator, anti-counterfeiting, or decorative element. The thickness of the ink layer 5 is 8-10 μm.

[0032] Example 2

[0033] A liquid crystal display screen, the surface of which is covered with the multifunctional glass cover plate described in Embodiment 1.

[0034] The above specific embodiments are only for illustrating the technical concept and structural features of this utility model, and are intended to enable those skilled in the art to implement them. However, the above content does not limit the protection scope of this utility model. Any equivalent changes or modifications made in accordance with the spirit and essence of this utility model shall fall within the protection scope of this utility model.

Claims

1. A multifunctional glass cover plate comprising a glass substrate (1) and a multilayer coating structure arranged on the surface of the glass substrate (1), characterized in that: The multilayer coating structure includes a barrier layer (2), an intermediate functional layer (3), a transition layer (4), and an ink layer (5) stacked sequentially upwards from the surface of the glass substrate (1). The barrier layer (2) is a boron trioxide layer, which can prevent the glass substrate (1) from being eroded by subsequent processes or the environment. The intermediate functional layer (3) is a silicon nitride layer, which can protect the surface of the glass substrate (1) from scratches and corrosion. The transition layer (4) is a chromium trioxide layer, which can increase optical transmittance. The ink layer (5) is a water-sensitive ink layer, which changes color when exposed to water or moisture.

2. The multifunctional glass cover plate of claim 1, wherein: The glass substrate (1) has a visible area and a non-visible area, and the ink layer (5) is located above the non-visible area.

3. The multi-functional glass cover plate of claim 2, wherein: The visible area is located in the middle of the glass substrate (1), and the non-visible area is located outside the visible area.

4. The multi-functional glass cover plate of claim 3, wherein: The ink layer (5) is screen-printed along the edge of the transition layer (4) along the non-visible area to form a ring structure.

5. The multi-functional glass cover plate of claim 1, wherein: The shape and size of the barrier layer (2), intermediate functional layer (3), and transition layer (4) are the same as the shape and size of the surface of the glass substrate (1).

6. The multi-functional glass cover plate of claim 1, wherein: The thickness of the barrier layer (2) is 50-100 nm.

7. The multi-functional glass cover plate of claim 1, wherein: The thickness of the intermediate functional layer (3) is 200-300 nm.

8. The multi-functional glass cover plate of claim 1, wherein: The thickness of the transition layer (4) is 100-200 nm.

9. The multi-functional glass cover plate of claim 1, wherein: The thickness of the ink layer (5) is 8-10 μm.

10. A liquid crystal display panel, characterized by comprising: The multifunctional glass cover plate includes any one of claims 1-9.

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