High-stability photochromic cover plate

Abstract

The utility model discloses a photosensitive color-changing cover plate with high stability. The photosensitive color-changing cover plate comprises a glass cover plate, the 3-aminopropyltriethoxysilane layer is arranged on the lower surface of the glass cover plate; and the photochromic ink layer is arranged on the lower surface of the 3-aminopropyltriethoxysilane layer. The photosensitive color-changing cover plate can reduce the ink falling risk and improve the product stability.

Description

Technical Field

[0001] This utility model relates to the field of electronic components, and in particular to a highly stable photosensitive color-changing cover. Background Technology

[0002] Electronic products such as mobile phones, tablets, cameras, and laptops generally include cover plates to protect the product or enhance its appearance. Currently, the appearance, color, and performance of cover plates on the market are relatively limited, and the color is irreversible; once formed, the color cannot be changed.

[0003] To address the aforementioned technical issues, Chinese Patent Application No. CN201920992056.8 discloses a flexible display screen, comprising a display module and a cover plate covering the display module. A photosensitive color-changing ink layer and a base color ink layer are sequentially stacked on the edge of the cover plate facing the display module. Because the photosensitive color-changing ink layer and the base color ink layer are sequentially stacked on the edge of the cover plate facing the display module, this flexible display screen can change its color in response to changes in ambient light, providing users with a better user experience.

[0004] However, because the photochromic ink layer contains photochromic agents, it has poorer adhesion to the cover plate compared to ordinary base color ink layers, and is at greater risk of ink peeling off. Utility Model Content

[0005] To address the shortcomings of the existing technology, this utility model provides a photosensitive color-changing cover plate, which can reduce the risk of ink smudging and improve product stability.

[0006] The technical problem to be solved by this utility model is achieved through the following technical solution:

[0007] A highly stable photosensitive color-changing cover plate, comprising:

[0008] Glass cover;

[0009] A 3-aminopropyltriethoxysilane layer is disposed on the lower surface of the glass cover plate;

[0010] A photosensitive color-changing ink layer is disposed on the lower surface of the 3-aminopropyltriethoxysilane layer.

[0011] Furthermore, the thickness of the 3-aminopropyltriethoxysilane layer is 10-20 nm.

[0012] Furthermore, the thickness of the photosensitive color-changing ink layer is 10-12 μm.

[0013] Furthermore, the photosensitive color-changing cover plate also includes a base color ink layer disposed on the lower surface of the photosensitive color-changing ink layer.

[0014] Furthermore, the photosensitive color-changing ink layer can change from transparent to opaque under illumination of light of a specific wavelength.

[0015] Furthermore, the photosensitive color-changing ink layer is a UV color-changing ink.

[0016] Furthermore, the thickness of the base color ink layer is 5-15 μm.

[0017] Furthermore, the glass cover includes a visible area and a frame area, with the frame area surrounding the periphery of the visible area; the photosensitive color-changing ink layer only covers the visible area of ​​the glass cover, while avoiding the frame area of ​​the glass cover.

[0018] Furthermore, the photosensitive color-changing cover plate also includes a titanium dioxide layer, a boron nitride layer, and a sulfonated polyvinyl fluoride layer, which are sequentially stacked on the upper surface of the glass cover plate.

[0019] Furthermore, the thickness of the titanium dioxide layer is 20-40 nm, the thickness of the boron nitride layer is 20-30 nm, and the thickness of the sulfonated polyvinyl fluoride layer is 50-100 nm.

[0020] This invention has the following beneficial effects: The photosensitive color-changing cover plate of this invention uses the 3-aminopropyltriethoxysilane layer to improve the lower surface of the glass cover plate, thereby increasing the adhesion of the photosensitive color-changing ink layer to the lower surface of the glass cover plate, reducing the risk of the photosensitive color-changing ink layer peeling off, and improving product stability; the 3-aminopropyltriethoxysilane layer contains amino groups (-NH2) in its molecules, which can chemically react with the hydroxyl groups (-OH) on the lower surface of the glass cover plate to form silicon-oxygen bonds (Si-O-Si), thereby forming a chemically bonded layer with high surface energy on the lower surface of the glass cover plate. This chemically bonded layer has good wettability and affinity with the photosensitive color-changing ink layer, which helps to improve the adhesion between the ink and the glass surface, thereby enhancing the adhesion of the photosensitive color-changing ink layer. Attached Figure Description

[0021] Figure 1 A schematic diagram of the stacked structure of the photosensitive color-changing cover plate provided by this utility model.

[0022] Figure 2 A schematic diagram of the stacked structure of another photosensitive color-changing cover plate provided by this utility model.

[0023] Figure 3 for Figure 2 The diagram shows a planar structure of the photosensitive color-changing cover.

[0024] Figure 4 A schematic diagram of the stacked structure of another photosensitive color-changing cover plate provided by this utility model. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the accompanying drawings and embodiments, examples of which are shown in the drawings. Throughout the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0026] 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.

[0027] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0028] 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.

[0029] Example 1

[0030] like Figure 1 As shown, a highly stable photosensitive color-changing cover plate includes:

[0031] Glass cover plate 1;

[0032] A 3-aminopropyltriethoxysilane layer 2 is disposed on the lower surface of the glass cover plate 1;

[0033] The photosensitive color-changing ink layer 3 is disposed on the lower surface of the 3-aminopropyltriethoxysilane layer 2.

[0034] The photosensitive color-changing cover plate of this invention uses the 3-aminopropyltriethoxysilane layer 2 to improve the lower surface of the glass cover plate 1, thereby increasing the adhesion of the photosensitive color-changing ink layer 3 to the lower surface of the glass cover plate 1, reducing the risk of the photosensitive color-changing ink layer 3 peeling off, and improving product stability. The 3-aminopropyltriethoxysilane layer 2 contains amino groups (-NH2) in its molecules, which can chemically react with the hydroxyl groups (-OH) on the lower surface of the glass cover plate 1 to form silicon-oxygen bonds (Si-O-Si), thereby forming a chemically bonded layer with high surface energy on the lower surface of the glass cover plate 1. This chemically bonded layer has good wettability and affinity with the photosensitive color-changing ink layer 3, which helps to improve the adhesion between the ink and the glass surface, thereby enhancing the adhesion of the photosensitive color-changing ink layer 3.

[0035] In this embodiment, the thickness of the 3-aminopropyltriethoxysilane layer 2 is 10-20 nm, and the thickness of the photosensitive color-changing ink layer 3 is 10-12 μm.

[0036] The photosensitive color-changing ink layer 3 is a special ink layer containing photochromic materials that can undergo reversible color changes under light (especially UV light), such as changing from transparent to opaque. The photosensitive color-changing ink layer 3 is composed of photosensitive pigment microcapsules and an adhesive. Its manufacturing method generally involves dissolving the photochromic pigment in a solvent to form miniaturized photosensitive pigment microcapsules, then adding an adhesive according to different applications. It is then formed on the lower surface of the glass cover plate 1 using methods such as roller coating, spraying, or printing, and finally cured into a film.

[0037] Preferably, the photosensitive color-changing ink layer 3 can change from transparent to opaque under illumination of light of a specific wavelength, and the opaque color can be, but is not limited to, red, blue, or green.

[0038] In this embodiment, the photosensitive color-changing ink layer 3 is a UV color-changing ink, which can change from transparent to opaque under UV light irradiation.

[0039] In some examples, the photosensitive color-changing cover plate further includes a base color ink layer 4 disposed on the lower surface of the photosensitive color-changing ink layer 3.

[0040] The base color ink layer 4 provides the basic color for the glass cover 1. When the photosensitive color-changing ink layer 3 is transparent, the glass cover 1 displays the same color as the base color ink layer 4. When the photosensitive color-changing ink layer 3 is opaque, the glass cover 1 displays the same color as the photosensitive color-changing ink layer 3 after it changes color. The color of the base color ink layer 4 should be different from the color of the photosensitive color-changing ink layer 3 after it changes color, and the greater the color difference, the better, so that users can easily distinguish between them.

[0041] In this embodiment, the thickness of the base color ink layer 4 is 5-15 μm. In addition to conventional black or white ink, colored inks such as red, blue, or green ink can also be used. When the photosensitive color-changing cover plate is used as the front cover plate of an electronic product, the photosensitive color-changing ink layer 3 and the base color ink layer 4 cover the entire lower surface of the glass cover plate 1.

[0042] Electronic products such as mobile phones generally include a front cover and a back cover. The front cover has a dedicated viewing area because it needs to accommodate a display screen, while the back cover does not need to accommodate a display screen and therefore does not have a viewing area.

[0043] When the photosensitive color-changing cover is used as the front cover of an electronic product, such as Figure 2 and 3 As shown, the glass cover 1 includes a visible area 11 and a frame area 12, with the frame area 12 surrounding the periphery of the visible area 11; the photosensitive color-changing ink layer 3 and the base color ink layer 4 only cover the visible area 11 of the glass cover 1, while avoiding the frame area 12 of the glass cover 1.

[0044] Since the 3-aminopropyltriethoxysilane layer 2 is transparent, it is not necessary to cover the visible area 11 of the glass cover plate 1.

[0045] Example 2

[0046] As an optimization of Embodiment 1, in this embodiment, such as Figure 4 As shown, the photosensitive color-changing cover plate also includes a titanium dioxide layer 5, a boron nitride layer 6, and a sulfonated polyvinyl fluoride layer 7, which are sequentially stacked on the upper surface of the glass cover plate 1.

[0047] This utility model's photosensitive color-changing cover plate employs a composite film layer formed by the aforementioned titanium dioxide layer 5, boron nitride layer 6, and sulfonated polyvinyl fluoride layer 7, improving the mechanical and optical properties of the upper surface of the glass cover plate 1. The combination of the titanium dioxide layer 5, boron nitride layer 6, and sulfonated polyvinyl fluoride layer 7 significantly enhances the hardness and wear resistance of the upper surface of the glass cover plate 1. The high light transmittance and low refractive index characteristics of the titanium dioxide layer 5 and boron nitride layer 6, combined with the excellent optical properties of the sulfonated polyvinyl fluoride layer 7, allow the glass cover plate 1 to maintain high transparency while reducing light reflection and scattering. The high thermal conductivity of the boron nitride layer 6 helps to rapidly dissipate heat from the glass cover plate 1, improving heat dissipation efficiency. The sulfonated polyvinyl fluoride layer 7 also possesses excellent chemical corrosion resistance, a low coefficient of friction, and waterproof performance.

[0048] The titanium dioxide layer 5, the boron nitride layer 6, and the sulfonated polyvinyl fluoride layer 7 all simultaneously cover the visible area 11 and the frame area 12 of the glass cover plate 1.

[0049] In this embodiment, the thickness of the titanium dioxide layer 5 is 20-40 nm, the thickness of the boron nitride layer 6 is 20-30 nm, and the thickness of the sulfonated polyvinyl fluoride layer 7 is 50-100 nm. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and not to limit it. Although the embodiments of this utility model have been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the scope of the technical solutions of this utility model.

Claims

1. A high-stability photosensitive color-changing cover plate, characterized in that, include: Glass cover; A 3-aminopropyltriethoxysilane layer is disposed on the lower surface of the glass cover plate; A photosensitive color-changing ink layer is disposed on the lower surface of the 3-aminopropyltriethoxysilane layer.

2. The photochromic cover plate of claim 1, wherein, The thickness of the 3-aminopropyltriethoxysilane layer is 10-20 nm.

3. The photochromic cover plate of claim 1, wherein, The thickness of the photosensitive color-changing ink layer is 10-12 μm.

4. The photochromic cover plate of claim 1, wherein, The photosensitive color-changing cover plate also includes a base color ink layer disposed on the lower surface of the photosensitive color-changing ink layer.

5. The photochromic cover plate of claim 4, wherein, The photosensitive color-changing ink layer can change from transparent to opaque under specific wavelengths of light.

6. The photochromic cover plate of claim 5, wherein, The photosensitive color-changing ink layer is a UV color-changing ink.

7. The photochromic cover plate of claim 4, wherein, The thickness of the base color ink layer is 5-15 μm.

8. The photochromic cover plate of claim 1, wherein, The glass cover includes a visible area and a border area, with the border area surrounding the periphery of the visible area; the photosensitive color-changing ink layer covers only the visible area of ​​the glass cover, while avoiding the border area of ​​the glass cover.

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