Thermochromic safety curved surface cover plate structure
By setting a thermochromic ink layer and a constant color ink layer on the curved cover plate, and using a PVB resin film to enhance the bonding strength, the problems of easy cracking and insufficient appearance personalization of the curved cover plate are solved, thus improving both safety and appearance personalization.
Patent Information
- Application Number
- CN202520419858.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-11
AI Technical Summary
Existing curved cover plates are prone to cracking and lack personalized appearance, failing to meet consumer demand.
A thermochromic ink layer and a constant color ink layer are applied to ultra-thin glass, and the curved glass is bonded to the appearance bonding component through a PVB resin film to enhance the bonding strength. The thermochromic ink layer presents different color effects at different temperatures.
The curved cover plate enhances safety and personalization, prevents glass shards from flying, and uses color changes to indicate temperature changes, thus improving the user experience.
Smart Images
Figure CN223835170U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electronic components, and in particular to a temperature-sensitive color-changing safety curved cover structure. Background Technology
[0002] Currently, curved cover plates are increasingly used in electronic devices, but their problems are also becoming increasingly apparent. Firstly, the susceptibility of existing curved cover plates to breakage is particularly prominent. Due to the special shape of curved cover plates, their edges are often more susceptible to external forces than flat cover plates, leading to breakage. This breakage not only affects the normal use of the device, but the flying fragments can also cause injury to users.
[0003] Furthermore, the fixed ink colors and insufficient personalization of curved cover plates are also a concern. Currently, most curved cover plates on the market use fixed colors and patterns, failing to meet consumers' individual needs. As consumers demand increasingly higher standards for the appearance of electronic products, this lack of personalization is no longer sufficient to satisfy market demands.
[0004] In summary, existing curved cover plates have significant drawbacks, including susceptibility to breakage, insufficient safety, and a lack of customization options. To improve product quality and user experience, manufacturers need to conduct in-depth research and improvements in material selection, technological innovation, and personalized design. Only in this way can consumer needs be truly met and the development of curved cover plate technology be driven forward. Utility Model Content
[0005] To address the shortcomings of the existing technology, this utility model provides a temperature-sensitive color-changing safety curved cover structure, which has good safety and a personalized appearance.
[0006] The technical problem to be solved by this utility model is achieved through the following technical solution:
[0007] A temperature-sensitive, color-changing safety curved cover structure includes curved glass and an exterior bonding component, wherein the exterior bonding component is bonded to the curved glass via a PVB resin film; wherein...
[0008] The exterior bonding component includes ultra-thin glass, a thermochromic ink layer, and a constant color ink layer, wherein the thermochromic ink layer and the constant color ink layer are disposed on the ultra-thin glass.
[0009] The thermochromic ink layer has a first distance from the curved glass, and the constant color ink layer has a second distance from the curved glass, wherein the first distance is smaller than the second distance.
[0010] Furthermore, the thermochromic ink layer is transparent at room temperature and becomes colored at temperatures above or below room temperature.
[0011] Furthermore, the thickness of the thermochromic ink layer is 7-10 μm.
[0012] Furthermore, the thermochromic ink layer is disposed on the side of the ultrathin glass close to the curved glass, and the constant color ink layer is disposed on the side of the ultrathin glass away from the curved glass.
[0013] Furthermore, the constant color ink layer is disposed on the side of the ultra-thin glass near the curved glass, and the thermochromic ink layer is disposed on the side of the constant color ink layer near the curved glass.
[0014] Furthermore, the thermochromic ink layer is disposed on the side of the constant color ink layer away from the curved glass, and the constant color ink layer is disposed on the side of the thermochromic ink layer away from the curved glass.
[0015] Furthermore, the ultra-thin glass has a visible area and a frame area, the frame area surrounding the visible area, and the thermochromic ink layer and the constant color ink layer only cover the frame area, while avoiding the visible area; the curved glass has a flat area and a curved area, the flat area corresponding to the visible area of the ultra-thin glass, and the curved area corresponding to the frame area of the ultra-thin glass.
[0016] Furthermore, the thickness of the PVB resin film is greater than the thickness of the ultrathin glass.
[0017] Furthermore, the thickness of the PVB resin film is 0.38-0.76 mm.
[0018] Furthermore, the thickness of the curved glass is 500-1000μm, and the thickness of the ultrathin glass is 10-100μm.
[0019] This utility model has the following beneficial effects: The safety curved cover plate structure of this utility model uses the PVB resin film (polyvinyl butyral) to bond the curved glass to the ultra-thin glass in the appearance bonding component. The large number of hydroxyl groups (-OH) in the PVB resin film combine with the silanol groups (Si-OH) in the curved glass and ultra-thin glass through hydrogen bonds or van der Waals forces, thereby improving the bonding strength between the curved glass and the ultra-thin glass. Furthermore, the complete adhesive film structure formed after the PVB resin film cures firmly adheres the fragments of the curved glass when it breaks, preventing glass fragments from flying outwards and thus improving safety. The thermochromic ink layer, through its temperature-sensitive color-changing properties, works in conjunction with the constant-color ink layer to allow the cover plate to exhibit different color effects under different temperature environments, thereby enhancing the personalized appearance. Attached Figure Description
[0020] Figure 1 The schematic diagram of the safety curved cover plate structure provided by this utility model before and after bonding.
[0021] Figure 2 A schematic diagram of another safety curved surface cover structure provided by this utility model before and after bonding.
[0022] Figure 3 A schematic diagram of another safety curved surface cover structure provided by this utility model before and after bonding. Detailed Implementation
[0023] 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.
[0024] 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.
[0025] 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.
[0026] 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.
[0027] Example 1
[0028] like Figure 1-3 As shown, a temperature-sensitive color-changing safety curved cover structure includes curved glass 1 and an appearance bonding component 3, wherein the appearance bonding component 3 is bonded to the curved glass 1 by a PVB resin film 2; wherein,
[0029] The appearance bonding component 3 includes an ultra-thin glass 31, a thermochromic ink layer 32, and a constant color ink layer 33, wherein the thermochromic ink layer 32 and the constant color ink layer 33 are disposed on the ultra-thin glass 31.
[0030] The thermochromic ink layer 32 has a first distance from the curved glass 1, and the constant color ink layer 33 has a second distance from the curved glass 1, wherein the first distance is smaller than the second distance.
[0031] The safety curved cover structure of this utility model uses the PVB resin film 2 (polyvinyl butyral) to bond the curved glass 1 to the ultra-thin glass 31 in the appearance bonding component 3. The numerous hydroxyl groups (-OH) in the PVB resin film 2 combine with the silanol groups (Si-OH) in the curved glass 1 and the ultra-thin glass 31 through hydrogen bonds or van der Waals forces, thereby improving the bonding strength between the curved glass 1 and the ultra-thin glass 31. Furthermore, the complete adhesive film structure formed after the PVB resin film 2 cures firmly adheres the fragments of the curved glass 1 when it breaks, preventing glass fragments from flying outwards and thus improving safety. The thermochromic ink layer 32, through its temperature-sensitive color-changing properties, works in conjunction with the constant-color ink layer 33 to allow the cover to exhibit different color effects under different temperature environments, thereby enhancing the personalized appearance.
[0032] The ultra-thin glass 31 refers to a glass substrate with a thickness of less than 200 μm, which can bend to a certain extent under external force without breaking, so there is no need to heat it to soften it.
[0033] This invention involves setting the thermochromic ink layer 32 and the constant color ink layer 33 onto the ultra-thin glass 31 to form the appearance bonding component 3, and then bending the ultra-thin glass 31 under external force to bond it to the curved glass 1. Compared to the prior art of directly setting the thermochromic ink layer 32 and the constant color ink layer 33 onto the curved glass 1, or first setting the thermochromic ink layer 32 and the constant color ink layer 33 onto a flat glass and then heating and bending the flat glass to form the curved glass 1, the difficulty of setting the ink is smaller, and the thermochromic ink layer 32 and the constant color ink layer 33 will not be damaged by high temperature (the glass hot bending temperature is 500-600℃).
[0034] Preferably, the thickness of the PVB resin film 2 is greater than the thickness of the ultra-thin glass 31, so that the PVB resin film 2 has sufficient thickness and elastic compression space to provide sufficient buffer for the curved glass 1 and reduce the risk of the curved glass 1 breaking under external impact.
[0035] In this embodiment, the thickness of the PVB resin film 2 is 0.38-0.76 mm, the thickness of the curved glass 1 is 500-1000 μm, and the thickness of the ultra-thin glass 31 is 10-100 μm.
[0036] The thermochromic ink layer 32 is transparent at room temperature, so that the safety curved cover structure presents an appearance color consistent with the constant color ink layer 33; the thermochromic ink layer 32 becomes colored at temperatures above or below room temperature, so that the safety curved cover structure presents a mixed color of the constant color ink layer 33 and the thermochromic ink layer 32, or an appearance color consistent with the color change of the thermochromic ink layer 32.
[0037] The constant color ink layer 33 can be made of conventional colored ink, such as carbon black ink, or other colored inks such as red or green.
[0038] In addition to enhancing the personalization of the appearance, the thermochromic ink layer 32 will also change color as the temperature of the electronic terminal rises during the use of mobile phones and other electronic terminals, thereby alerting the user to the overheating status of the electronic terminal and enabling the user to cool down the electronic terminal in time to avoid damage to the electronic terminal.
[0039] The thermochromic ink layer 32 may, but is not limited to, use crystal violet lactone as the leuco dye and bisphenol A as the color developer. During preparation, the leuco dye and color developer are first uniformly mixed in a preset ratio, then dissolved in an organic solvent to form the thermochromic ink. Finally, the thermochromic ink is applied to the ultra-thin glass 31 using methods such as screen printing to form a specific ink pattern. In this embodiment, the thickness of the thermochromic ink layer 32 is 7-10 μm.
[0040] In some examples, such as Figure 1 As shown, the thermochromic ink layer 32 is disposed on the side of the ultrathin glass 31 close to the curved glass 1, and the constant color ink layer 33 is disposed on the side of the ultrathin glass 31 away from the curved glass 1.
[0041] In this example, the constant color ink layer 33 is disposed on the side of the ultra-thin glass 31 away from the curved glass 1. When the curved glass 1 and the ultra-thin glass 31 are bonded together, the constant color ink layer 33 can be covered and sealed by the PVB resin film 2 to avoid the constant color ink layer 33 being corroded by moisture and causing a decrease in its color-changing function.
[0042] In some examples, such as Figure 2 As shown, the constant color ink layer 33 is disposed on the side of the ultra-thin glass 31 near the curved glass 1, and the thermochromic ink layer 32 is disposed on the side of the constant color ink layer 33 near the curved glass 1.
[0043] In this example, both the constant color ink layer 33 and the constant color ink layer 34 are disposed on the side of the ultra-thin glass 31 away from the curved glass 1. When the curved glass 1 and the ultra-thin glass 31 are bonded together, the constant color ink layer 33 and the constant color ink layer 34 can be covered and sealed together by the PVB resin film to avoid the problem of the constant color ink layer 33 being corroded by moisture and thus experiencing a decrease in color-changing function, as well as the problem of the constant color ink layer 33 being corroded by moisture and thus experiencing a color deviation.
[0044] In some examples, such as Figure 3 As shown, the thermochromic ink layer 32 is disposed on the side of the constant color ink layer 33 away from the curved glass 1, and the constant color ink layer 33 is disposed on the side of the thermochromic ink layer 32 away from the curved glass 1.
[0045] The ultra-thin glass 31 has a visible area 311 and a frame area 312. The frame area 312 surrounds the visible area 311. The thermochromic ink layer 32 and the constant color ink layer 33 only cover the frame area 312 and avoid the visible area 311. The curved glass 1 has a flat area 11 and a curved area 12. The flat area 11 corresponds to the visible area 311 of the ultra-thin glass 31, and the curved area 12 corresponds to the frame area 312 of the ultra-thin glass 31.
[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them. Although the present 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 still be made to the technical solutions of the present utility model, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the scope of the technical solutions of the present utility model.
Claims
1. A temperature-sensitive color-changing safety curved cover structure, comprising curved glass and an exterior fitting component, characterized in that, The exterior bonding component is bonded to the curved glass via a PVB resin film; wherein... The exterior bonding component includes ultra-thin glass, a thermochromic ink layer, and a constant color ink layer, wherein the thermochromic ink layer and the constant color ink layer are disposed on the ultra-thin glass. The thermochromic ink layer has a first distance from the curved glass, and the constant color ink layer has a second distance from the curved glass, wherein the first distance is smaller than the second distance.
2. The safety curved surface cover plate structure according to claim 1, characterized in that, The thermochromic ink layer is transparent at room temperature and turns colored at temperatures above or below room temperature.
3. The safety curved surface cover plate structure according to claim 1 or 2, characterized in that, The thickness of the thermochromic ink layer is 7-10 μm.
4. The safety curved surface cover plate structure according to claim 1, characterized in that, The thermochromic ink layer is disposed on the side of the ultra-thin glass close to the curved glass, and the constant color ink layer is disposed on the side of the ultra-thin glass away from the curved glass.
5. The safety curved surface cover plate structure according to claim 1, characterized in that, The constant color ink layer is disposed on the side of the ultra-thin glass near the curved glass, and the thermochromic ink layer is disposed on the side of the constant color ink layer near the curved glass.
6. The safety curved surface cover plate structure according to claim 1, characterized in that, The thermochromic ink layer is disposed on the side of the constant color ink layer away from the curved glass.
7. The safety curved surface cover plate structure according to claim 1, characterized in that, The ultra-thin glass has a visible area and a border area, the border area surrounding the visible area, and the thermochromic ink layer and the constant color ink layer only cover the border area and avoid the visible area; the curved glass has a flat area and a curved area, the flat area corresponding to the visible area of the ultra-thin glass, and the curved area corresponding to the border area of the ultra-thin glass.
8. The safety curved surface cover plate structure according to claim 1, characterized in that, The thickness of the PVB resin film is greater than the thickness of the ultrathin glass.
9. The safety curved surface cover plate structure according to claim 1 or 8, characterized in that, The thickness of the PVB resin film is 0.38-0.76 mm.
10. The safety curved surface cover plate structure according to claim 1 or 8, characterized in that, The thickness of the curved glass is 500-1000μm, and the thickness of the ultrathin glass is 10-100μm.