WO2021136273A1 - Casing body assembly, casing body assembly preparation method, and electronic device - Google Patents

Abstract

The present application provides a casing body assembly, comprising a transparent substrate and an optical film layer, a first color layer, and a decoration layer all arranged on the transparent substrate; the first color layer is arranged on the surface of the optical film layer, and said first color layer has a hollow portion; the decoration layer is partially arranged on the surface of the first color layer that is away from the optical film layer, and partially arranged on the surface of the optical film layer exposed at the hollow portion; the decoration layer comprises a second color layer and a coating layer arranged on the surface of the second color layer; the layer among the second color layer and the coating layer that is closest to the optical film layer has an optical transmittance greater than 30%, the first color layer has an optical transmittance less than 10%, and the first color layer and the second color layer are different colors. The casing body assembly achieves the effect of different texture color contrast, and improves the visual effect and aesthetic expressiveness of the casing body. The present application further provides a casing body assembly preparation method and an electronic device comprising said casing body assembly.

Description

Shell assembly, preparation method of shell assembly and electronic equipment Technical field

This application belongs to the technical field of electronic products, and specifically relates to a housing assembly, a method for manufacturing the housing assembly, and electronic equipment.

Background technique

With the continuous development of electronic devices, users have higher and higher requirements for the appearance of the casing, and the appearance of a single color can no longer meet the needs of users. Therefore, the appearance effects of more and more housings are diversified.

Summary of the invention

In view of this, the present application provides a housing assembly, a manufacturing method of the housing assembly, and an electronic device that achieve color contrast effects with different textures.

In a first aspect, the present application provides a housing assembly including a transparent substrate and an optical film layer, a first color layer and a modification layer provided on the transparent substrate;

The first color layer is arranged on the surface of the optical film layer, and the first color layer has a hollow part;

The modification layer is partly arranged on the surface of the first color layer away from the optical film layer, and partly arranged on the surface of the optical film layer exposed by the hollow part, and the modification layer includes a second color layer and The coating layer on the surface of the second color layer, the second color layer is close to the optical film layer and the optical transmittance is greater than 30%, or the coating layer is close to the optical film layer and the optical transmittance is greater than 30%, the optical transmittance of the first color layer is less than 10%, and the colors of the first color layer and the second color layer are different.

In a second aspect, the present application provides a method for preparing a housing assembly, including:

A transparent substrate is provided, and an optical film layer, a first color layer and a modified layer are formed on the transparent substrate, wherein the first color layer is disposed on the surface of the optical film layer, and the first color layer has Hollow part; the modification layer is partly arranged on the surface of the first color layer away from the optical film layer, and partly arranged on the surface of the optical film layer exposed by the hollow part, the modification layer includes a second color Layer and a coating layer disposed on the surface of the second color layer, the second color layer is close to the optical film layer and the optical transmittance is greater than 30%, or the coating layer is close to the optical film layer and is optically transparent The light rate is greater than 30%, the optical transmittance of the first color layer is less than 10%, and the colors of the second color layer and the first color layer are different.

In a third aspect, the present application provides an electronic device, including a display screen, and a cover plate and a housing assembly arranged on opposite sides of the display screen. The housing assembly includes a transparent substrate and a housing assembly arranged on the transparent substrate. The optical film layer, the first color layer and the modification layer on the substrate; the first color layer is arranged on the surface of the optical film layer, the first color layer has a hollow part; the modification layer is partially arranged on the surface The first color layer is away from the surface of the optical film layer, and is partially disposed on the surface of the optical film layer exposed by the hollow portion, and the modification layer includes a second color layer and is disposed on the surface of the second color layer The second color layer is close to the optical film layer and the optical transmittance is greater than 30%, or the coating layer is close to the optical film layer and the optical transmittance is greater than 30%, the first color The optical transmittance of the layer is less than 10%, the colors of the second color layer and the first color layer are different, the housing assembly has an inner surface and an outer surface that are arranged oppositely, and the optical film layer reaches the The direction of the modified layer is consistent with the direction from the outer surface to the inner surface.

The present application provides a housing assembly and a method for preparing the housing assembly. By providing a first color layer with a hollow part, the surface of the transparent substrate is partially covered by the optical film layer and the first color layer, and partly covered by the optical film layer and the first color layer. The film layer, the second color layer, and the coating layer are covered, presenting different colors and gloss texture effects, realizing the contrast effect of different textures, and enriching the visual effects of the shell assembly; this application also provides an electronic device including the above-mentioned shell assembly Equipment to improve the appearance and expressiveness of electronic equipment.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application, the drawings that need to be used in the embodiments of the present application will be described below.

FIG. 1 is a schematic structural diagram of a housing assembly according to an embodiment of the application.

FIG. 2 is a schematic structural diagram of a housing assembly according to another embodiment of the application.

FIG. 3 is a schematic structural diagram of a housing assembly according to another embodiment of the application.

FIG. 4 is a schematic structural diagram of a housing assembly according to another embodiment of the application.

FIG. 5 is a schematic structural diagram of a housing assembly according to another embodiment of the application.

FIG. 6 is a schematic structural diagram of a housing assembly according to another embodiment of the application.

FIG. 7 is a schematic structural diagram of a housing assembly according to another embodiment of the application.

FIG. 8 is a schematic structural diagram of a housing assembly according to another embodiment of the application.

FIG. 9 is a schematic structural diagram of a housing assembly according to another embodiment of the application.

FIG. 10 is a schematic structural diagram of a housing assembly according to another embodiment of the application.

FIG. 11 is a schematic structural diagram of a housing assembly according to another embodiment of the application.

FIG. 12 is a schematic flowchart of a method for manufacturing a housing assembly according to an embodiment of the application.

FIG. 13 is a schematic flow chart of a manufacturing method of a housing assembly according to another embodiment of the application.

FIG. 14 is a schematic structural diagram of an electronic device according to an embodiment of the application.

Description of the drawings:

Transparent substrate-10, optical film layer-20, first color layer-30, modification layer-40, second color layer-41, coating layer-42, second texture layer-43, first texture layer-50, Connection layer-60, protective layer-70, shading layer-80, housing assembly-100, display screen-200, cover plate-300.

Detailed ways

The following are the preferred embodiments of this application. It should be noted that for those of ordinary skill in the art, without departing from the principles of this application, several improvements and modifications can be made, and these improvements and modifications are also regarded as the original The scope of protection applied for.

The following disclosure provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples, and are not intended to limit the application. In addition, the present application may repeat reference numerals and/or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and/or settings discussed. In addition, this application provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and/or the use of other materials.

Please refer to FIG. 1, which is a schematic structural diagram of a housing assembly 100 according to an embodiment of the application. The housing assembly 100 includes a transparent substrate 10 and an optical film layer 20 and a first color layer 30 disposed on the transparent substrate 10. And modification layer 40; the first color layer 30 is arranged on the surface of the optical film layer 20, the first color layer 30 has a hollow part; the modification layer 40 is partially arranged on the surface of the first color layer 30 away from the optical film layer 20, and is partially arranged on The surface of the optical film layer 20 exposed by the hollow part. The modification layer 40 includes a second color layer 41 and a coating layer 42 disposed on the surface of the second color layer 41. The second color layer 41 is close to the optical film layer 20 and optically The transmittance is greater than 30%, or the coating layer 42 is close to the optical film layer 20 and the optical transmittance is greater than 30%, the optical transmittance of the first color layer 30 is less than 10%, and the first color layer 30 and the first color layer 30 The colors of the two color layers 41 are different.

By arranging the optical film layer 20 and the first color layer 30 with the hollow part, the transparent substrate 10 is partially covered with the first color layer 30, and the area covered with the first color layer 30 has the optical film layer 20 and the first color layer 30 superimposed on the appearance effect of a color and gloss texture; at the same time, a second color layer 41 and a coating layer 42 are arranged in the corresponding area of the hollow part, and the corresponding area of the hollow part has an optical film layer 20, a second color layer 41 and a coating film. The appearance effect of another color and gloss texture superimposed on the layer 42 makes the housing assembly 100 have different color areas, and the gloss texture of the different color areas is also different, which realizes the contrast effect of different textures and enriches the housing The appearance effect of the assembly 100 improves the appearance and expressiveness of the housing assembly 100, and compared with the design scheme that requires an overprinting process, the housing assembly 100 provided in the present application will not have dislocations and boundaries between different color layers. Obvious, poor wiring and other defects, with a good appearance effect.

In the present application, the material for forming the transparent substrate 10 is not particularly limited. For example, it may be any known material that can be used for the housing of an electronic device. Optionally, the material of the transparent substrate 10 includes at least one of an organic polymer compound and an inorganic non-metallic material. Further, the material of the transparent substrate 10 includes polycarbonate (PC), polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), thermoplastic polyurethane (TPU), glass and ceramics. At least one of. In one embodiment, the transparent substrate 10 is formed by stacking a polyethylene terephthalate layer and a polymethyl methacrylate layer. In the present application, the transparent substrate 10 has certain light transmittance. Optionally, the optical transmittance of the transparent substrate 10 is greater than 90%. Among them, the optical transmittance is the transmittance of light in the 380nm-780nm band. Specifically, the thickness of the transparent substrate 10 is not particularly limited. For example, the thickness of the transparent substrate 10 is 0.05mm-0.8mm, and specifically can be but not limited to 0.05mm, 0.08mm, 0.15mm, 0.3mm, 0.45mm, 0.5mm, 0.68mm, 0.77mm, 0.8mm, etc., to meet the requirements of the impact resistance of the shell assembly 100, and not to be too thick, to meet the needs of light and thin. In one embodiment, the transparent substrate 10 is formed by laminating a polycarbonate layer and a polymethyl methacrylate layer, the thickness of the polycarbonate layer is 0.59 nm, the thickness of the polymethyl methacrylate is 0.05 nm, and the transparent substrate 10 is transparent. The thickness of the substrate 10 is 0.64 mm. In the present application, the transparent substrate 10 can be, but is not limited to, a back shell and/or a middle frame of an electronic device. For example, the transparent substrate 10 can be used directly as a casing of an electronic device, or it can be used as a casing after a functional film layer is formed on the transparent substrate 10. In this application, the specific shape and size of the transparent substrate 10 are not limited, and can be selected and designed according to actual needs. For example, the shape of the transparent substrate 10 can be a 2D shape, a 2.5D shape or a 3D shape. In an embodiment, patterns, characters, etc., can be silk-printed on the surface of the transparent substrate 10, specifically, logos, etc. can be silk-printed to improve the visual effect of the housing assembly 100; for example, the thickness of the silk-print is 1 μm-4 μm , Bake at 60℃-80℃ for 45min-80min.

It is understandable that the optical film layer 20 is disposed on the surface of the transparent substrate 10, and the first color 30 and the modification layer 40 are disposed on the surface of the optical film layer 20 away from the transparent substrate 10. . The optical film layer 20 is an optical medium material layer that transmits light through its interface, and can change the reflection, refraction, etc. of the light passing through the optical film layer 20, so that the housing assembly 100 exhibits a certain gloss change, such as under different angles. It presents different color gloss and brings metallic texture and other visual effects; by changing the material, thickness and number of layers of the optical film 20, the reflectance, refractive index and light transmittance of the optical film 20 are changed to achieve different visual effects. Meet the needs of different scenarios. In the present application, the material of the optical film layer 20 is selected from substances that can make the optical film layer 20 have a certain optical effect. Specifically, but not limited to, the optical film layer 20 has a certain refractive index, transmittance, and reflectivity. Wait. In the present application, the optical transmittance of the optical film layer 20 is greater than 15%, so that the visual effects of other layer structures can be presented. Optionally, the optical transmittance of the optical film layer 20 is greater than 50%. Further, the optical transmittance of the optical film layer 20 is greater than 80%. The material of the optical film layer 20 may be inorganic or organic. Optionally, the organic substance includes at least one of polyether, polyester, fluoropolymer, and silicon-containing polymer. When the material of the optical film layer 20 is organic, the optical film layer 20 has good flexibility and flexibility, and can be cut to obtain the optical film layer 20 of a desired size. Optionally, the inorganic substance includes at least one of elemental metal, inorganic oxide, and inorganic fluoride. In one embodiment, the material of the optical film layer 20 includes at least one of simple metals, inorganic oxides, and inorganic fluorides. For example, the material of the optical film layer 20 includes TiO ₂ , NbO ₂ , Nb ₂ O ₃ , and Nb ₂ At least one of O ₂ , Nb ₂ O ₅ , SiO ₂ and ZrO ₂ or other non-conductive oxides. For example, the material of the optical film layer 20 may be selected from a combination of at least two of _{TiO 2} , NbO ₂ , Nb ₂ O ₃ , Nb ₂ O ₂ , Nb ₂ O ₅ , SiO ₂ and ZrO _{2 so that the optical film layer 20} It presents the effect of colorful gloss texture such as blue or purple.

In the present application, the optical film layer 20 may have a single-layer film structure or a multilayer film structure. When the optical film layer 20 has a multilayer film structure, the material and thickness of each layer and the coordination between the layers can be controlled to achieve the desired function. Optionally, the optical film layer 20 is formed by alternately laminating at least two optical films with different refractive indexes. In other words, when the optical film layer 20 is composed of a plurality of optical films, the refractive indexes of adjacent optical films are different. Further, the optical film layer 20 is formed by periodically alternately laminating at least two kinds of films with different refractive indexes. The material and thickness of the multiple optical films can be the same or different. The optical properties of multiple optical films are different. After light passes through the multiple optical films, the surface of each light film will be reflected and refracted, resulting in a richer appearance effect. Specifically, the optical film layer 20 may include, but is not limited to, two, three, four, five, six, seven, or eight optical films. In one embodiment, the optical film layer 20 is formed by alternately laminating three layers of silicon dioxide optical films and three layers of titanium dioxide optical films. Optionally, the thickness of the optical film layer 20 is 80-500nm, specifically but not limited to 80nm, 100nm, 180nm, 250nm, 300nm, 470nm, 500nm, etc., too thin will cause the optical film layer 20 to present a glossy texture effect Too weak or too thick will cause excessive stress in the film layer and easy to fall off. This thickness range is conducive to presenting the visual effect of the optical film layer 20 and at the same time guarantees the service life of the optical film layer 20. The optical film layer 20 in the present application has a whole-layer structure, and there is no need to shield or etch during the preparation process, and it is easier to prepare the optical film layer 20 with excellent performance. In the present application, the method of forming the optical film layer 20 is not particularly limited. For example, it may be formed by a physical vapor deposition method or a vacuum coating method. In one embodiment, the optical film layer 20 is formed by a vacuum non-conductive electroplating (NVCM) process. When the housing assembly 100 has the optical film layer 20, the housing assembly 100 can reflect a certain gloss texture at different angles, which improves the appearance and expressiveness of the housing assembly 100.

In the present application, the first color layer 30 is disposed on the surface of the optical film layer 20, and the first color layer 30 is used to color the housing assembly 100, so that the housing assembly 100 has a rich appearance effect. Specifically, the thickness of the first color layer 30 is not particularly limited. For example, the thickness of the first color layer 30 may be 3 μm-10 μm, and specifically may be 4 μm, 5 μm, 6.5 μm, 7.2 μm, 8 μm, or 9 μm. When the thickness of the first color layer 30 is in the above range, the housing assembly 100 can have a good color effect.

In the present application, the first color layer 30 has a hollow portion, that is, the first color layer 30 is provided on a part of the surface of the transparent substrate 10. The hollow part can be, but is not limited to, a preset pattern, text, etc. Specifically, the shape of the hollow portion is not particularly limited, and the shape of the hollow portion can be designed to make the housing assembly 100 present a rich appearance effect. Specifically, the first color layer 30 can be formed by at least one of offset printing, silk screen printing, printing and thermal transfer. For example, the position of the material of the first color layer 30 can be controlled by silk screen printing to directly form the first color layer with a hollow part. 30; It is also possible to coat a whole layer of the first color layer 30 material on the surface of the optical film layer 20, and form a hollow part by etching after curing; it is also possible to pre-set a mask on the optical film layer 20 and directly screen print A first color layer 30 having a hollow part is formed. In an embodiment, the formation of the hollow part can be controlled by controlling the film, so as to form the first color layer 30 with the hollow part on the optical film layer 20. In an embodiment, the first color layer 30 may be formed of an ink having a predetermined color, for example, a UV curable ink or the like. The first color layer 30 may have a single-layer structure or a multi-layer structure, and the colors of the inks forming different layers may be the same or different. Specifically, the ink color can be, but is not limited to, yellow, red, blue, green, white, black, etc. In a specific embodiment, the silk-screened film pattern is controlled, the optical film layer 20 is coated with a 4 μm-8 μm thick color ink, and the first color with a hollow part is formed after baking at 60° C.-90° C. for 30 min-60 min. Layer 30. In the present application, the optical transmittance of the first color layer 30 is less than 10%, so that the first color layer 30 can block light, and the film layer located behind the first color layer 30 in the light propagation direction has a visual effect. The hollow part in the first color layer 30 can present the visual effect of the rear film layer, thereby creating a difference in visual effect, thereby improving the appearance and expressiveness of the housing assembly 100.

In the present application, the modification layer 40 is disposed on the surface of the transparent substrate 10, and the optical film layer 20 and the first color layer 30 are disposed on the modification layer 40 away from the transparent substrate 10. surface. The modification layer 40 is partly arranged on the surface of the first color layer 30 away from the optical film layer 20, and partly on the surface of the optical film layer 20 exposed by the hollow part, that is, the orthographic projection of the modification layer 40 on the optical film layer 20 is completely Cover the orthographic projection of the hollow part on the optical film layer 20. The modification layer 40 is used to modify and decorate the housing assembly 100 and produce a visual effect different from the non-hollowed area of the first color layer 30. In one embodiment, the surface of the modification layer 40 away from the optical film layer 20 is a flat surface. The modification layer 40 includes a second color layer 41 and a coating layer 42 disposed on the surface of the second color layer 41. The optical transmittance of the second color layer 41 and the coating layer 42 that is close to the optical film layer 20 is greater than 30%. That is, in the second color layer 41 and the coating layer 42, when the second color layer 41 is closer to the optical film layer 20, the optical transmittance of the second color layer 41 is greater than 30%, so that the visual effect of the coating layer 42 Can be presented without being blocked by the second color layer 41; when the coating layer 42 is closer to the optical film layer 20, the optical transmittance of the coating layer 42 is greater than 30%, so that the visual effect of the second color layer 41 can be presented , Not blocked by the coating layer 42.

The second color layer 41 is used to color the housing assembly 100 so that the housing assembly 100 has a rich appearance effect. Specifically, the thickness of the second color layer 41 is not particularly limited. For example, the thickness of the second color layer 41 may be 3 μm-10 μm, specifically, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, or 9 μm. When the thickness of the second color layer 41 is within the above range, the housing assembly 100 can have a good color effect. Specifically, the second color layer 41 may be formed by at least one of offset printing, silk screen printing, printing, and thermal transfer. In an embodiment, the second color layer 41 may be formed of an ink having a predetermined color, for example, a UV curable ink or the like. The second color layer 41 may have a single-layer structure or a multi-layer structure, and the colors of the inks forming different layers may be the same or different. Specifically, the ink color can be, but is not limited to, yellow, red, blue, green, white, black, etc. In a specific embodiment, the second color layer 41 is formed by silk-screening a color ink with a thickness of 4 μm-8 μm and baking at 60° C.-90° C. for 30 min-60 min. In the present application, the colors of the first color layer 30 and the second color layer 41 are different, so that the housing assembly 100 produces different colors to achieve a color contrast effect.

It is understandable that the coating layer 42 has a similar effect to the optical film layer 20. It is an optical medium material layer that transmits light through its interface, and can change the reflection, refraction, etc. of the light passing through the coating layer 42, so that the housing assembly 100 Show a certain gloss change, such as showing different color gloss at different angles, bringing visual effects such as metallic texture; changing the reflectivity, refractive index and transparency of the coating layer 42 by changing the material, thickness and number of layers of the coating layer 42 The light rate can achieve different visual effects to meet the needs of different scenarios. In the present application, the material of the coating layer 42 is selected from substances that can make the coating layer 42 have a certain optical effect. Specifically, but not limited to, the coating layer 42 has a certain refractive index, transmittance, and reflectivity. The material of the coating layer 42 may be inorganic or organic. Optionally, the organic substance includes at least one of polyether, polyester, fluoropolymer, and silicon-containing polymer. When the material of the coating layer 42 is organic, the coating layer 42 has good flexibility and flexibility, and can be cut to obtain a coating layer 42 of a desired size. Optionally, the inorganic substance includes at least one of elemental metal, inorganic oxide, and inorganic fluoride. In one embodiment, the material of the coating layer 42 includes at least one of simple metal, inorganic oxide, and inorganic fluoride. For example, the material of the coating layer 42 includes In, Sn, TiO ₂ , NbO ₂ , Nb ₂ O ₃ , At least one of Nb ₂ O ₂ , Nb ₂ O ₅ , SiO ₂ and ZrO ₂ or other non-conductive oxides. Further, the material of the coating layer 42 is In-Sn, which produces a metallic texture effect with high reflectivity. For example, the material of the coating layer 42 can be selected from _{a combination of at least two of TiO 2} , NbO ₂ , Nb ₂ O ₃ , Nb ₂ O ₂ , Nb ₂ O ₅ , SiO ₂ and ZrO ₂ to make the coating layer 42 appear blue. Color or purple and other colored glossy texture effects. For another example, the material of the coating layer 42 may be In or In-Sn, so that the coating layer 42 presents a silver metallic texture effect.

In the present application, the plating film layer 42 may have a single-layer film structure or a multilayer film structure. When the coating layer 42 is a multilayer film structure, the material and thickness of each layer and the coordination between the layers can be controlled to achieve the desired function. Optionally, the coating layer 42 is formed by alternately laminating at least two optical films with different refractive indices. In other words, when the coating layer 42 is composed of a plurality of optical films, the refractive indexes of adjacent optical films are different. Further, the coating layer 42 is formed by periodically alternately laminating at least two kinds of films with different refractive indexes. The material and thickness of the multiple optical films can be the same or different. The optical properties of multiple optical films are different. After light passes through the multiple optical films, the surface of each light film will be reflected and refracted, resulting in a richer appearance effect. Specifically, the coating layer 42 may include, but is not limited to, a 2-layer, 3-layer, 4-layer, 5-layer, 6-layer, 7-layer, or 8-layer optical film. Optionally, the thickness of the coating layer 42 is 20nm-500nm, specifically, but not limited to 30nm, 80nm, 150nm, 220nm, 300nm, 470nm, 500nm, etc., too thin will cause the coating layer 42 to exhibit too weak gloss texture effect If the thickness is too thick, the stress in the film layer will be too large and easy to fall off. This thickness range is beneficial to present the visual effect of the coating layer 42 and at the same time ensure the service life of the coating layer 42. The coating layer 42 in the present application has a whole-layer structure, and there is no need for masking or etching during the preparation process, and it is easier to prepare the coating layer 42 with excellent performance. In the present application, the method of forming the coating layer 42 is not particularly limited. For example, it can be formed by a physical vapor deposition method or a vacuum coating method. The coating equipment can be a magnetron sputtering furnace or an electron gun evaporation coating. In one embodiment, the coating layer 42 is formed by a vacuum non-conductive electroplating (NVCM) process. When the housing assembly 100 has the coating layer 42, the housing assembly 100 can reflect a certain gloss texture at different angles, which improves the appearance and expressiveness of the housing assembly 100.

Please refer to FIG. 2, which is a schematic structural diagram of a housing assembly according to another embodiment of the application, in which the modification layer 40 further includes a second texture layer 43, and the second texture layer 43 is disposed on the coating layer 42 close to the optical film layer 20 s surface. The second texture layer 43 can make the housing assembly 100 present a texture visual effect. At the same time, the second texture layer 43 is superimposed on the coating layer 42, so that the appearance effect of the second texture layer 43 is more clearly presented, and has different effects at different angles. The color of the light changes to present textures with different textures, and the appearance and expressiveness of the housing assembly 100 is improved.

In an embodiment of the present application, the optical transmittance of the second texture layer 43 is greater than 30%. Further, the optical transmittance of the second texture layer 43 is greater than 50%, 70%, 80%, or 90%. The thickness of the second texture layer 43 may be 5 μm-15 μm, specifically but not limited to 6 μm, 7 μm, 9.5 μm, 10 μm, 11.5 μm, 12 μm, 15 μm, etc., within this thickness range, a good texture effect can be formed. Too large a thickness may result in poor impact resistance and easy cracking of the second texture layer 43, and too small a thickness may result in inconspicuous texture formation, and it is difficult to control the preparation process. In one embodiment, the second texture layer 43 may only be provided on the surface of the modification layer 40 corresponding to the hollow portion, that is, the orthographic projection of the second texture layer 43 on the coating layer 42 and the orthographic projection of the hollow portion on the coating layer 42 are complete. In this case, the second texture layer 43 can be arranged in a small area on the surface of the coating layer 42 to present a texture effect through the hollow part, saving the use of the material of the second texture layer 43. In another embodiment, the orthographic projection of the second texture layer 43 on the coating layer 42 completely covers the orthographic projection of the hollow portion on the coating layer 42 and partially covers the orthographic projection of the first color layer 30 on the coating layer 42; this At this time, the orthographic projection of the second texture layer 43 on the coating layer 42 and the orthographic projection of the first color layer 30 on the coating layer 42 can be completely overlapped, which is beneficial to the overall film structure of the housing assembly 100 to be flatter. In the present application, the second texture layer 43 corresponding to the hollow portion only needs to have a texture, and of course, the whole layer may also have a texture. In an embodiment, the second texture layer 43 may be formed on the coating layer 42 by, but not limited to, UV transfer optical texture processing. Optionally, the second texture layer 43 is formed on the coating layer 42 by a high-scratch-resistant UV transfer glue, a high-hardness UV transfer glue, a high-elastic UV transfer glue or a general-purpose UV transfer glue. Specifically, the material of the UV transfer adhesive includes polyurethane acrylic resin and the like. Specifically, the UV transfer glue is coated and cured to form the second texture layer 43. Alternatively, curing comprises curing the LED or a mercury lamp, wherein, LED curing energy ^{800mJ / cm 2 -2500mJ / cm 2} , a mercury lamp curing energy ^{550mJ / cm 2 -1500mJ / cm 2} .

Please continue to refer to FIG. 2, where the housing assembly 100 further includes a first texture layer 50, and the first texture layer 50 is disposed on the surface of the optical film layer 20 away from the modification layer 40. The first texture layer 50 can make the housing assembly 100 present a texture visual effect. The first texture layer 50 is arranged on the surface of the optical film layer 20, so that the appearance effect of the first texture layer 50 is more clearly presented, and has different angles. Different light colors change to present textures with different textures; the first texture layer 50 combined with the first color layer 30, the second color layer 41, etc., can achieve texture visual effects with different colors and textures.

In an embodiment of the present application, the optical transmittance of the first texture layer 50 is greater than 30%. Further, the optical transmittance of the first texture layer 50 is greater than 50%, 70%, 80% or 90%. The thickness of the first texture layer 50 may be 5 μm-15 μm, specifically but not limited to 6 μm, 7 μm, 8 μm, 10 μm, 11 μm, 12 μm, 15 μm, etc., within this thickness range, a good texture effect can be formed. It is likely that the first texture layer 50 has poor impact resistance and is easy to crack. If the thickness is too small, the formed texture may be inconspicuous, and it is difficult to control the preparation process. In one embodiment, the first texture layer 50 completely covers the optical film layer 20. In an embodiment, the first texture layer 50 may be formed on the optical film layer 20 by, but not limited to, UV transfer optical texture processing. Optionally, the first texture layer 50 is formed on the optical film layer 20 by a high-scratch-resistant UV transfer glue, a high-hardness UV transfer glue, a high-elastic UV transfer glue or a general-purpose UV transfer glue. Specifically, the material of the UV transfer adhesive includes polyurethane acrylic resin and the like. Specifically, the UV transfer glue is coated and cured to form the first texture layer 50. Alternatively, curing comprises curing the LED or a mercury lamp, wherein, LED curing energy ^{800mJ / cm 2 -2500mJ / cm 2} , a mercury lamp curing energy ^{550mJ / cm 2 -1500mJ / cm 2} . The texture of the first texture layer 50 can be, but is not limited to, a nano-level illusion fine texture, which improves the visual effect of the housing assembly 100. In the present application, when the housing assembly 100 includes the first texture layer 50 and the second texture layer 43, the textures of the first texture layer 50 and the second texture layer 43 are different, so that the area corresponding to the hollow part presents the first texture layer With the superimposed texture effect of 50 and the second texture layer 43, other regions present the texture effect of the first texture layer 50, so that the shell assembly 100 exhibits two texture effects, and improves the appearance expressiveness of the shell assembly 100.

Please continue to refer to FIG. 1, where the optical film layer 20 is disposed on the surface of the transparent substrate 10, and the first color layer 30 and the modification layer 40 are disposed on the surface of the optical film layer 20 away from the transparent substrate 10. In the direction from the modification layer 40 to the optical film layer 20, the position corresponding to the hollow part presents the visual effect of the optical film layer 20, the second color layer 41, and the coating layer 42. The other positions present the optical film layer 20 and the first color layer. The superimposed visual effects of 30 make it possible for the housing assembly 100 to present the appearance of different colors and textures. Please refer to FIG. 3, which is a schematic structural diagram of a housing assembly according to another embodiment of the application, in which the modification layer 40 is disposed on the surface of the transparent substrate 10, and the optical film layer 20 and the first color layer 30 are disposed far away from the modification layer 40. The surface of the transparent substrate 10. In the direction from the modification layer 40 to the optical film layer 20, the position corresponding to the hollow part presents the visual effect of the optical film layer 20, the second color layer 41, and the coating layer 42. The other positions present the optical film layer 20 and the first color layer. The superimposed visual effects of 30 make it possible for the housing assembly 100 to present the appearance of different colors and textures. Both of these two setting methods can achieve appearance effects of different colors and textures in a certain direction of the housing assembly 100.

Please continue to refer to FIG. 1, where, compared with the coating layer 42, the second color layer 41 is closer to the optical film layer 20. At this time, the optical transmittance of the second color layer 41 is greater than 30%, so that the coating layer 42 can be displayed. The appearance of the effect. The second color layer 41 and the first color layer 30 have different colors. At the same time, the transmittance of the second color layer 41 is greater than that of the first color layer 30, which distinguishes the two colors more clearly and forms a more obvious color contrast effect. In an embodiment, the second color layer 41 only covers the surface of the optical film layer 20 exposed by the hollow portion. For example, the surface of the second color layer 41 away from the optical film layer 20 may be flush with the surface of the first color layer 30 away from the optical film layer 20, saving the use of materials for the second color layer 41. In another embodiment, the second color layer 41 may partially cover the surface of the optical film layer 20 exposed by the hollow portion and partially cover the first color layer 30. At this time, the first color layer 30 and the second color layer 41 There is no obvious boundary, no dislocation phenomenon, good appearance effect, and easier operation and realization in the preparation process. When the modification layer 40 further includes the second texture layer 43, referring to FIG. 2, the second texture layer 43 is disposed between the second color layer 41 and the coating layer 42. The optical transmittance of the second texture layer 43 is greater than 30%, so that the appearance effect of the coating layer 42 can be presented.

Please refer to FIG. 4, which is a schematic structural diagram of a housing assembly according to another embodiment of the application, which is substantially the same as the housing assembly provided in FIG. 1, except that, compared with the second color layer 41, the coating layer 42 is more Close to the optical film layer 20, at this time, the optical transmittance of the coating layer 42 is greater than 30%, so that the appearance effect of the second color layer 41 can be presented. In one embodiment, the coating layer 42 only covers the surface of the optical film layer 20 exposed by the hollow portion. For example, the surface of the coating layer 42 away from the optical film layer 20 may be flush with the surface of the first color layer 30 away from the optical film layer 20, saving the use of the material of the coating layer 42. In another embodiment, the coating layer 42 may partially cover the surface of the optical film layer 20 exposed in the hollow portion, and partially cover the first color layer 30. At this time, there will be no obvious difference between the first color layer 30 and the coating layer 42. It will not produce dislocation phenomenon, the appearance effect is good, and it is easier to operate and realize in the preparation process. When the modification layer 40 further includes the second texture layer 43, please refer to FIG. 5, which is a schematic structural diagram of a housing assembly according to another embodiment of the application, which is substantially the same as the housing assembly provided in FIG. 2, except that: Compared with the second color layer 41, the coating layer 42 is closer to the optical film layer 20. At this time, the optical transmittance of the coating layer 42 is greater than 30%, so that the appearance effect of the second color layer 41 can be presented. At this time, the second texture layer 43 is disposed between the optical film layer 20 and the coating layer 42. The optical transmittance of the second texture layer 43 is greater than 30%, so that the appearance effect of the coating layer 42 can be presented. In an embodiment, the second texture layer 43 only covers the surface of the optical film layer 20 exposed by the hollow portion. For example, the surface of the second texture layer 43 away from the optical film layer 20 may be flush with the surface of the first color layer 30 away from the optical film layer 20, saving the use of the material of the second texture layer 43. In another embodiment, the second texture layer 43 may partially cover the surface of the optical film layer 20 exposed by the hollow portion, and partially cover the first color layer 30. At this time, the first color layer 30 and the second texture layer 43 may be separated from each other. There is no obvious boundary, no dislocation phenomenon, good appearance effect, and easier operation and realization in the preparation process.

Please refer to FIG. 6, which is a schematic structural diagram of a housing assembly according to another embodiment of the application, which is substantially the same as the housing assembly provided in FIG. Between the transparent substrate 10 and the optical film layer 20 to connect the transparent substrate 10 and the optical film layer 20. Please refer to FIG. 7, which is a schematic structural diagram of a housing assembly according to another embodiment of the application, which is substantially the same as the housing assembly provided in FIG. Between the transparent substrate 10 and the modified layer 40 to connect the transparent substrate 10 and the modified layer 40. In this application, the optical transmittance of the connecting layer 60 is greater than 30%. Further, the optical transmittance of the connecting layer 60 is greater than 50%, 70%, 80% or 90%. In the present application, the thickness of the connection layer 60 may be 5 μm-15 μm, specifically but not limited to 6 μm, 7 μm, 8 μm, 9 μm, 10 μm, 12 μm, 15 μm, etc. The material of the connection layer 60 can be, but is not limited to, a UV curable glue. In one embodiment, the UV curable adhesive is spray coated, and the connection layer 60 is formed after curing. Specifically, the curing energy may be 400 mJ/cm ² -1200 mJ/cm ² . Optionally, the material of the connection layer 60 includes at least one of urethane acrylate, silicone resin, and perfluoropolyether acrylate, so that the surface hardness of the connection layer 60 is improved. Optionally, the surface hardness of the connecting layer 60 is 1H-6H, which can further protect the film structure in the housing assembly 100 to a certain extent.

Please refer to FIG. 8, which is a schematic structural diagram of a housing assembly according to another embodiment of the application, which is substantially the same as the housing assembly provided in FIG. 1, except that it further includes a protective layer 70, which is disposed on the transparent liner. The bottom 10 is away from the surface of the optical film layer 20. Please refer to FIG. 9, which is a schematic structural diagram of a housing assembly according to another embodiment of the application, which is substantially the same as the housing assembly provided in FIG. 3, except that it also includes a protective layer 70, which is disposed on the optical film The layer 20 is far away from the surface of the transparent substrate 10. The above are two ways of setting the protective layer 70, and the protective layer 70 is used to protect each film layer of the housing assembly 100.

In an embodiment of the present application, the optical transmittance of the protective layer 70 is greater than 30%. Further, the optical transmittance of the protective layer 70 is greater than 50%, 70%, 80% or 90%. In the present application, the thickness of the protective layer 70 may be 3 μm-20 μm, specifically, but not limited to 4 μm, 6 μm, 8 μm, 11 μm, 15 μm, 16 μm, 18 μm, etc. Optionally, the protective layer 70 includes at least one of a hardened layer and an anti-fingerprint layer. The material of the hardened layer can be, but is not limited to, ultraviolet curing glue. In one embodiment, the UV curable adhesive is spray coated and cured to form a hardened layer. Specifically, the curing energy may be 400 mJ/cm ² -1200 mJ/cm ² . Optionally, the material of the hardening layer includes at least one of urethane acrylate, silicone resin, and perfluoropolyether acrylate. Optionally, the surface hardness of the hardened layer is 3H-6H, which can further protect the film structure in the housing assembly 100 to a certain extent. The anti-fingerprint layer has the functions of anti-fouling and anti-fingerprint adhesion. Optionally, the material of the anti-fingerprint layer includes a fluorine-containing anti-fingerprint agent. Specifically, the material of the anti-fingerprint layer can be, but is not limited to, perfluoropolyethers, polytetrafluoroethylene, fluoroalkyl ether-siloxane, magnesium aluminum oxide fluoride, and the like. Specifically, the contact angle of the surface of the anti-fingerprint layer can be, but is not limited to, greater than 105°, which is beneficial to improve the ability of preventing fingerprints and contaminants from adhering to the surface.

Please refer to FIG. 10, which is a schematic structural diagram of a housing assembly according to another embodiment of the application, which is substantially the same as the housing assembly provided in FIG. 1, except that it also includes a light-shielding layer 80, which is disposed on the modification layer. 40 is far away from the surface of the transparent substrate 10. Please refer to FIG. 11, which is a schematic structural diagram of a housing assembly according to another embodiment of the present application. It is substantially the same as the housing assembly provided in FIG. 3, except that it also includes a light-shielding layer 80, which is disposed on the transparent lining. The bottom 10 is away from the surface of the optical film layer 20. The above are two ways of disposing the light shielding layer 80. The light shielding layer 80 plays a role of shielding, so that when the housing assembly 100 is used, for example, when used in an electronic device, the electronic components inside the electronic device are shielded. The thickness of the light-shielding layer 80 is not particularly limited, as long as the requirements are met, those skilled in the art can flexibly choose according to needs. Optionally, the thickness of the light shielding layer 80 is 10 μm-30 μm. Specifically, the thickness of the light shielding layer 80 may be, but is not limited to, 10 μm, 12 μm, 18 μm, 22 μm, 28 μm, or 30 μm. Optionally, the optical transmittance of the light shielding layer 80 is less than 10%. The color of the light-shielding layer 80 is not particularly limited, as long as the requirements are met, those skilled in the art can flexibly choose according to needs, for example, it may include but not limited to red, orange, gray, black, white, and the like. Thus, any different colors can be selected to meet the needs of different users. Specifically, multiple coatings can be used to prevent light leakage and improve the shielding effect. In an embodiment, the light shielding layer 80 is an ink layer, which may include but is not limited to being formed by screen printing or inkjet printing. For example, by screen printing the ink to form the light-shielding layer 80, this method can be applied to various types of inks. The ink layer has strong covering power and is not limited by the surface shape and area size of the substrate. It has great flexibility and Broad applicability.

The present application also provides a method for preparing the housing assembly. The method for preparing the housing assembly 100 of any of the above embodiments includes:

A transparent substrate 10 is provided, and an optical film layer 20, a first color layer 30 and a modification layer 40 are formed on the transparent substrate 10. The first color layer 30 is provided on the surface of the optical film layer 20, and the first color layer 30 has Hollowed part; the modification layer 40 is partly arranged on the surface of the first color layer 30 away from the optical film layer 20, and partly arranged on the surface of the optical film layer 20 exposed in the hollow part. The modification layer 40 includes a second color layer 41 and arranged on the second color layer 41. The coating layer 42 on the surface of the color layer 41, the second color layer 41 is close to the optical film layer 20 and has an optical transmittance greater than 30%, or the coating layer 42 is close to the optical film layer 20 and has an optical transmittance If it is greater than 30%, the optical transmittance of the first color layer 30 is less than 10%, and the colors of the second color layer 41 and the first color layer 30 are different.

Please refer to FIG. 12, which is a schematic flowchart of a method for manufacturing a housing assembly according to an embodiment of the application, including the following steps:

Operation 101: forming an optical film layer on the surface of the transparent substrate.

In operation 101, the transparent substrate 10 has a certain light transmittance, and its shape, size, material, etc. are not limited, and the selection is made according to actual needs. In the present application, the transparent substrate 10 can be, but is not limited to, a back shell and/or a middle frame of an electronic device. For example, the transparent substrate 10 can be used directly as a casing of an electronic device, or it can be used as a casing after a functional film layer is formed on the transparent substrate 10. In an embodiment, after the optical film layer 20, the first color layer 30, and the modification layer 40 are molded on the transparent substrate 10, the housing assembly 100 of a desired shape can be formed by a high pressure molding process. For example, 3D hot bending forming can be performed in a high-pressure forming machine to obtain a 3D shell assembly 100 with a desired curvature. Specifically, it can be, but not limited to, 130°C-240°C, molding pressure 15Bar-100Bar, and hot pressing for 0.3min-2min. When the required housing assembly 100 is in a shape with a certain curvature, such as 2.5D, 3D, etc., you can choose to form each film layer on the transparent substrate 10 and then perform hot press molding. On the one hand, it is beneficial to the preparation of each film layer, and on the other hand, On the one hand, the distribution of the various film layers on the housing assembly 100 can be made uniform, and the visual effect is excellent; when the required housing assembly 100 is in the shape of a flat plate, the transparent substrate 10 of the required shape can be directly provided, and then each film layer For the preparation of, it is also possible to form each film layer on the transparent substrate 10, and then perform hot press forming.

In the present application, the method of forming the optical film layer 20 is not particularly limited. For example, it may be formed by a physical vapor deposition method or a vacuum coating method. In one embodiment, the optical film layer 20 is formed by a vacuum non-conductive electroplating process. In the present application, the material of the optical film layer 20 includes at least one of TiO ₂ , NbO ₂ , Nb ₂ O ₃ , Nb ₂ O ₂ , Nb ₂ O ₅ , SiO ₂ and ZrO ₂ or other non-conductive oxides. Optionally, the thickness of the optical film layer 20 is 80 nm-500 nm. In an embodiment, operation 101 further includes silk-printing a pattern on the surface of the transparent substrate 10. Specifically, the visual effect of the housing assembly 100 can be improved by, but not limited to, silk-screened logos, texts, and the like.

Operation 102: forming a first color layer on the surface of the optical film layer away from the transparent substrate, the first color layer has a hollow portion, and the optical transmittance of the first color layer is less than 10%.

In operation 102, the first color layer 30 can be formed by at least one of offset printing, silk screen printing, printing and thermal transfer. For example, the position of the material of the first color layer 30 can be controlled by silk screen printing to directly form the first color layer 30 with a hollow part. Color layer 30; it is also possible to coat a whole layer of the first color layer 30 material on the surface of the optical film layer 20, and form a hollow part by etching after curing; it is also possible to pre-set a mask on the optical film layer 20, Direct silk-printing forms the first color layer 30 with a hollow part. In an embodiment, the formation of the hollow part can be controlled by controlling the film, so as to form the first color layer 30 with the hollow part on the optical film layer 20. In a specific embodiment, the silk-screened film pattern is controlled, the optical film layer 20 is coated with a 4 μm-8 μm thick color ink, and the first color with a hollow part is formed after baking at 60° C.-90° C. for 30 min-60 min. Layer 30. Further, after baking at 65° C.-90° C. for 30 min-50 min, the first color layer 30 with the hollow part is formed.

Operation 103: molding a modified layer on the surface of the first color layer away from the optical film layer, the modified layer is partially disposed on the surface of the first color layer away from the optical film layer, and partially disposed on the hollow Part of the exposed surface of the optical film layer, the modification layer includes a second color layer and a coating layer disposed on the surface of the second color layer, the second color layer 41 is close to the optical film layer 20 and is optically The transmittance is greater than 30%, or the coating layer 42 is close to the optical film layer 20 and the optical transmittance is greater than 30%, the second color layer and the first color layer have different colors.

In operation 103, the modification layer 40 includes a second color layer 41 and a plating layer 42. The second color layer 41 may be formed by at least one process of offset printing, silk screen printing, printing, and thermal transfer. In a specific embodiment, the second color layer 41 is formed by silk-screening a color ink with a thickness of 4 μm-8 μm and baking at 60° C.-90° C. for 30 min-60 min. Further, the second color layer 41 is formed after baking at 70° C.-85° C. for 35 min-55 min. In an embodiment, the material of the coating layer 42 includes In, Sn, TiO ₂ , NbO ₂ , Nb ₂ O ₃ , Nb ₂ O ₂ , Nb ₂ O ₅ , SiO ₂ and ZrO ₂ or other non-conductive oxides. At least one. Further, the material of the coating layer 42 is In-Sn, which produces a metallic texture effect with high reflectivity. In the present application, the method of forming the coating layer 42 is not particularly limited. For example, it can be formed by a physical vapor deposition method or a vacuum coating method. The coating equipment can be a magnetron sputtering furnace or an electron gun evaporation coating. In one embodiment, the coating layer 42 is formed by a vacuum non-conductive electroplating process.

In the manufacturing method of the housing assembly 100 of the present application, the first color layer 30 with the hollow part is prepared, so that the subsequent preparation of the second color layer 41 can be made without overprinting, which avoids the obvious color boundary line caused by overprinting. , Or occurrence of misalignment and other problems, to avoid the appearance of inconsistent visual effects, so that the color overlap in the color collision area is natural, seamless overlap is realized, and the appearance expressiveness is improved.

Please refer to FIG. 13. FIG. 13 is a schematic flowchart of a manufacturing method of the housing assembly 100 according to another embodiment of the application, including the following steps:

Operation 201: forming a modified layer on the surface of the transparent substrate, the modified layer including a second color layer and a coating layer provided on the surface of the second color layer.

In operation 201, the difference from operation 101 is that a modification layer 40 is formed on the transparent substrate 10, and the modification layer 40 includes a second color layer 41 and a coating layer 42. The second color layer 41 may be formed by at least one process of offset printing, silk screen printing, printing, and thermal transfer. The coating layer 42 can be formed by a physical vapor deposition method or a vacuum coating method. Specifically, the surface of the modified layer 40 away from the transparent substrate 10 has a convex structure, that is, the surface of the modified layer 40 away from the transparent substrate 10 is uneven. The molding process can be controlled, such as offset printing, silk screen printing, printing, and thermal transfer. , Deposition, evaporation, etc., directly produce a plane with raised structures. Alternatively, after the modified layer 40 is formed, the surface of the modified layer 40 away from the transparent substrate 10 may be etched to form the raised structure.

Operation 202: forming a first color layer on the surface of the modification layer away from the transparent substrate, the first color layer has a hollow part, the modification layer partially fills the hollow part, the first color layer and The colors of the second color layer are different, and the optical transmittance of the first color layer is less than 10%.

In operation 202, the formed first color layer 30 has a hollow portion. Specifically, the surface of the modified layer 40 away from the transparent substrate 10 has a convex structure. By controlling the preparation process, the first color layer 30 is formed on the surface of the modified layer 40 away from the transparent substrate 10, and the formed first color layer The surface of 30 is flush with the surface of the raised structure. Specifically, the first color layer 30 can be formed by at least one of offset printing, silk screen printing, printing, and thermal transfer.

Operation 203: forming an optical film layer on the surface of the first color layer and the modified layer exposed by the hollow portion, the second color layer 41 is close to the optical film layer 20 and the optical transmittance is greater than 30% , Or the coating layer 42 is close to the optical film layer 20 and the optical transmittance is greater than 30%.

In operation 203, the method of forming the optical film layer 20 is not particularly limited. For example, it may be formed by a physical vapor deposition method, or may be formed by a vacuum coating method. In one embodiment, the optical film layer 20 is formed by a vacuum non-conductive electroplating (NVCM) process.

In an embodiment of the present application, the preparation method of the modified layer 40 includes forming a second color layer 41 on the surface of the optical film layer 20 exposed at the hollow portion, and the optical transmittance of the second color layer 41 is greater than 30%; A coating layer 42 is formed on the surface of the color layer 41, and the orthographic projection of the coating layer 42 on the optical film layer 20 completely covers the orthographic projection of the hollow area on the optical film layer 20. In another embodiment of the present application, the preparation method of the modified layer 40 includes forming a coating layer 42 on the surface of the optical film layer 20 exposed at the hollow portion, and the optical transmittance of the coating layer 42 is greater than 30%; on the surface of the coating layer 42 The second color layer 41 is formed, and the orthographic projection of the second color layer 41 on the optical film layer 20 completely covers the orthographic projection of the hollow area on the optical film layer 20. In an embodiment of the present application, the preparation method of the modification layer 40 further includes forming a second texture layer 43 on the surface of the coating layer 42 close to the optical film layer 20. The second texture layer 43 can be formed on the coating layer 42 through UV transfer optical texture processing, but is not limited to. Optionally, the second texture layer 43 is formed on the coating layer 42 by a high-scratch-resistant UV transfer glue, a high-hardness UV transfer glue, a high-elastic UV transfer glue or a general-purpose UV transfer glue. Specifically, the material of the UV transfer adhesive includes polyurethane acrylic resin and the like. Specifically, the UV transfer glue is coated and cured to form the second texture layer 43. Alternatively, curing comprises curing the LED or a mercury lamp, wherein, LED curing energy ^{800mJ / cm 2 -2500mJ / cm 2} , a mercury lamp curing energy ^{550mJ / cm 2 -1500mJ / cm 2} . Further, LED curing energy ^{1000mJ / cm 2 -2000mJ / cm 2} , a mercury lamp curing energy ^{600mJ / cm 2 -1200mJ / cm 2} .

In an embodiment of the present application, the manufacturing method of the housing assembly 100 further includes forming the first texture layer 50 on the surface of the optical film layer 20 away from the modification layer 40. The first texture layer 50 can be formed but not limited to UV transfer optical texture processing. Optionally, the first texture layer 50 is formed on the optical film layer 20 by a high-scratch-resistant UV transfer glue, a high-hardness UV transfer glue, a high-elastic UV transfer glue or a general-purpose UV transfer glue. Specifically, the material of the UV transfer adhesive includes polyurethane acrylic resin and the like. Specifically, the UV transfer glue is coated and cured to form the first texture layer 50. Alternatively, curing comprises curing the LED or a mercury lamp, wherein, LED curing energy ^{800mJ / cm 2 -2500mJ / cm 2} , a mercury lamp curing energy ^{550mJ / cm 2 -1500mJ / cm 2} . Further, LED curing energy ^{900mJ / cm 2 -2200mJ / cm 2} , a mercury lamp curing energy ^{600mJ / cm 2 -1000mJ / cm 2} . The texture of the first texture layer 50 can be, but is not limited to, a nano-level illusion fine texture, which improves the visual effect of the housing assembly 100.

In an embodiment of the present application, when forming the first texture layer 50 and the second texture layer 43, there is no need to perform operations such as overprinting, and the effects of the two texture layers can be well formed on the housing assembly 100, avoiding overprinting. The resulting problems such as obvious boundaries and poor bonding wires can improve the visual effect of the housing assembly 100.

When the optical film layer 20 is between the transparent substrate 10 and the modification layer 40, in an embodiment of the present application, the method for preparing the housing assembly 100 further includes forming a connecting layer between the optical film layer 20 and the transparent substrate 10 60. The connection layer 60 is used to connect the transparent substrate 10 and the optical film layer 20. The material of the connection layer 60 can be, but is not limited to, a UV curable glue. In one embodiment, the UV curable adhesive is spray coated, and the connection layer 60 is formed after curing. Specifically, the curing energy may be 400 mJ/cm ² -1200 mJ/cm ² . In another embodiment of the present application, the manufacturing method of the housing assembly 100 further includes forming a protective layer 70 on the surface of the transparent substrate 10 away from the optical film layer 20. In one embodiment, the protective layer 70 includes a hardened layer and an anti-fingerprint layer. In one embodiment, the UV curable adhesive is spray coated and cured to form a hardened layer. Specifically, the curing energy may be 400 mJ/cm ² -1200 mJ/cm ² . Optionally, the surface hardness of the hardened layer is 3H-6H, which can further protect the film structure in the housing assembly 100 to a certain extent. The anti-fingerprint layer has the functions of anti-fouling and anti-fingerprint adhesion. Specifically, the contact angle of the surface of the anti-fingerprint layer can be, but is not limited to, greater than 105°, which is beneficial to improve the ability of preventing fingerprints and contaminants from adhering to the surface. In another embodiment of the present application, the manufacturing method of the housing assembly 100 further includes forming a light-shielding layer 80 on the surface of the modification layer 40 away from the transparent substrate 10. It may include but is not limited to being formed by screen printing or inkjet printing. Specifically, multiple coatings can be used to prevent light leakage and improve the shielding effect.

When the modification layer 40 is between the transparent substrate 10 and the optical film layer 20, in an embodiment of the present application, the method for preparing the housing assembly 100 further includes forming a connecting layer 60 between the modification layer 40 and the transparent substrate 10 . In another embodiment of the present application, the manufacturing method of the housing assembly 100 further includes forming a protective layer 70 on the surface of the optical film layer 20 away from the transparent substrate 10. In one embodiment, the protective layer 70 includes a hardened layer and an anti-fingerprint layer. In another embodiment of the present application, the manufacturing method of the housing assembly 100 further includes forming a light-shielding layer 80 on the surface of the transparent substrate 10 away from the modification layer 40. The selection and preparation method of the connection layer 60, the protection layer 70 and the light shielding layer 80 can be selected in the above related description, and there is no limitation on this.

In an embodiment of the present application, the method for preparing the housing assembly 100 further includes performing computer digital control precision machining (CNC processing) on the housing assembly 100. CNC machining can mill off the excess leftover material to obtain the final housing assembly 100 with a matching size to be assembled.

The present application also provides an electronic device, including the housing assembly 100 of any of the above embodiments. It is understandable that electronic devices can be, but are not limited to, mobile phones, tablet computers, notebook computers, watches, MP3, MP4, GPS navigators, digital cameras, and the like. Let's take a mobile phone as an example for description.

Please refer to FIG. 14, which is a schematic structural diagram of an electronic device according to another embodiment of the application. The electronic device includes a display screen 200, and a cover 300 and a housing assembly 100 disposed on opposite sides of the display screen 200. The housing assembly 100 includes a transparent substrate 10 and an optical film layer 20, a first color layer 30, and a modification layer 40 disposed on the transparent substrate 10; the first color layer 30 is disposed on the surface of the optical film layer 20, and the first color layer 30 has Hollowed part; the modification layer 40 is partly arranged on the surface of the first color layer 30 away from the optical film layer 20, and partly arranged on the surface of the optical film layer 20 exposed in the hollow part. The modification layer 40 includes a second color layer 41 and arranged on the second color layer 41. The coating layer 42 on the surface of the color layer 41, the second color layer 41 is close to the optical film layer 20 and has an optical transmittance greater than 30%, or the coating layer 42 is close to the optical film layer 20 and has an optical transmittance Greater than 30%, the optical transmittance of the first color layer 30 is less than 10%, the second color layer 41 and the first color layer 30 have different colors, the housing assembly 100 has opposite inner and outer surfaces, and the optical film layer The direction from 20 to the modification layer 40 is consistent with the direction from the outer surface to the inner surface. It can be understood that the housing assembly 100 has an inner surface and an outer surface that are opposed to each other, wherein the inner surface and the outer surface are based on the use state of the housing assembly 100. The housing assembly 100 is applied to an electronic device, and the side facing the inside of the electronic device is the inner surface, and the side facing the outside of the electronic device is the outer surface. On the outer surface of the housing assembly 100 corresponding to the hollow part, the visual effect of the superposition of the optical film layer 20, the second color layer 41 and the coating layer 42 is presented, and the superposition of the optical film layer 20 and the first color layer 30 is presented in other positions. For visual effects, the color collision area is seamlessly overlapped, and the appearance effect is excellent, so that the electronic device presents the appearance of different colors and textures, forming an obvious color collision effect, and enriching the appearance of the electronic device.

The above provides a detailed introduction to the content provided by the implementation of the application. This article explains and explains the principles and implementations of the application. The above description is only used to help understand the methods and core ideas of the application; at the same time, for the field General technical personnel, based on the idea of this application, will have changes in the specific implementation and scope of application. In summary, the content of this specification should not be construed as a limitation to this application.

Claims (20)

1. A housing assembly, which is characterized by comprising a transparent substrate and an optical film layer, a first color layer and a modification layer arranged on the transparent substrate;

   The first color layer is arranged on the surface of the optical film layer, and the first color layer has a hollow part;

   The modification layer is partly arranged on the surface of the first color layer away from the optical film layer, and partly arranged on the surface of the optical film layer exposed by the hollow part, and the modification layer includes a second color layer and The coating layer on the surface of the second color layer, the second color layer is close to the optical film layer and the optical transmittance is greater than 30%, or the coating layer is close to the optical film layer and the optical transmittance is greater than 30%, the optical transmittance of the first color layer is less than 10%, and the colors of the first color layer and the second color layer are different.
2. The housing assembly according to claim 1, wherein the optical film layer is disposed on the surface of the transparent substrate, and the first color layer and the modification layer are disposed on the optical film layer away from the surface of the transparent substrate. The surface of the transparent substrate.
3. The housing assembly of claim 1, wherein the modification layer is disposed on the surface of the transparent substrate, and the optical film layer and the first color layer are disposed on the modification layer away from the The surface of the transparent substrate.
4. The housing assembly of claim 1, further comprising a first texture layer, the first texture layer being disposed on a surface of the optical film layer away from the modification layer.
5. The housing assembly of claim 4, wherein the optical transmittance of the first texture layer is greater than 30%, and the thickness of the first texture layer may be 5 μm-15 μm.
6. The housing assembly of claim 1, wherein the modification layer further comprises a second texture layer, and the second texture layer is disposed on a surface of the coating layer close to the optical film layer.
7. The housing assembly of claim 6, wherein the optical transmittance of the second texture layer is greater than 30%, and the thickness of the second texture layer is 5 μm-15 μm.
8. 7. The housing assembly of claim 6, wherein the second texture layer is disposed on the surface of the modification layer corresponding to the hollow portion.
9. The housing assembly of claim 6, wherein the orthographic projection of the second texture layer on the coating layer completely covers the orthographic projection of the hollow portion on the coating layer, and partially covers all The orthographic projection of the first color layer on the coating layer.
10. The housing assembly of claim 1, wherein the material of the optical film layer includes TiO ₂ , NbO ₂ , Nb ₂ O ₃ , Nb ₂ O ₂ , Nb ₂ O ₅ , SiO ₂ and ZrO ₂ At least one of.
11. The housing assembly of claim 1, wherein the optical film layer is formed by alternately laminating at least two optical films with different refractive indexes, and the thickness of the optical film layer is 80 nm-500 nm.
12. The housing assembly of claim 1, wherein the material of the coating layer includes In, Sn, TiO ₂ , NbO ₂ , Nb ₂ O ₃ , Nb ₂ O ₂ , Nb ₂ O ₅ , SiO ₂ and at least one of ZrO _2, the thickness of the plated layer is 20nm-500nm.
13. The housing assembly of claim 12, wherein the coating layer is formed by periodically alternately laminating at least two kinds of films with different refractive indexes.
14. The housing assembly of claim 1, wherein the material of the transparent substrate comprises at least one of polycarbonate, polymethyl methacrylate, polyethylene terephthalate, and thermoplastic polyurethane , The thickness of the transparent substrate is 0.05mm-0.8mm.
15. A method for preparing a housing assembly, which is characterized in that it comprises:

    A transparent substrate is provided, and an optical film layer, a first color layer and a modified layer are formed on the transparent substrate, wherein the first color layer is disposed on the surface of the optical film layer, and the first color layer has Hollow part; the modification layer is partly arranged on the surface of the first color layer away from the optical film layer, and partly arranged on the surface of the optical film layer exposed by the hollow part, the modification layer includes a second color Layer and a coating layer disposed on the surface of the second color layer, the second color layer is close to the optical film layer and the optical transmittance is greater than 30%, or the coating layer is close to the optical film layer and is optically transparent The light rate is greater than 30%, the optical transmittance of the first color layer is less than 10%, and the colors of the second color layer and the first color layer are different.
16. The preparation method according to claim 15, characterized in that it comprises:

    Forming an optical film layer on the surface of the transparent substrate;

    Forming a first color layer on the surface of the optical film layer away from the transparent substrate, the first color layer has a hollow portion, and the optical transmittance of the first color layer is less than 10%;

    A modification layer is formed on the surface of the first color layer away from the optical film layer, and the modification layer is partly disposed on the surface of the first color layer away from the optical film layer, and partly disposed on the exposed surface of the hollow part. The surface of the optical film layer, the modification layer includes a second color layer and a coating layer disposed on the surface of the second color layer, the second color layer is close to the optical film layer and has an optical transmittance greater than 30 %, or the coating layer is close to the optical film layer and the optical transmittance is greater than 30%, and the colors of the second color layer and the first color layer are different.
17. The preparation method according to claim 15, characterized in that it comprises:

    Forming a modification layer on the surface of the transparent substrate, the modification layer including a second color layer and a coating layer provided on the surface of the second color layer;

    A first color layer is formed on the surface of the modification layer away from the transparent substrate, the first color layer has a hollow portion, the modification layer partially fills the hollow portion, the first color layer and the first color layer The colors of the two color layers are different, and the optical transmittance of the first color layer is less than 10%;

    An optical film layer is formed on the surface of the first color layer and the modified layer exposed by the hollow portion, the second color layer is close to the optical film layer and the optical transmittance is greater than 30%, or the coating The layer is close to the optical film layer and the optical transmittance is greater than 30%.
18. The preparation method according to claim 15, wherein the molding modification layer comprises:

    Forming a second color layer on the surface of the optical film layer exposed at the hollow portion;

    A coating layer is formed on the surface of the second color layer, and the orthographic projection of the coating layer on the optical film layer completely covers the orthographic projection of the hollow area on the optical film layer.
19. The preparation method according to claim 15, wherein the molding modification layer comprises:

    Forming a coating layer on the surface of the optical film layer exposed at the hollow portion;

    A second color layer is formed on the surface of the coating layer, and the orthographic projection of the second color layer on the optical film layer completely covers the orthographic projection of the hollow area on the optical film layer.
20. An electronic device, which is characterized in that it comprises a display screen, and a cover plate and a housing assembly arranged on opposite sides of the display An optical film layer, a first color layer and a modified layer; the first color layer is arranged on the surface of the optical film layer, the first color layer has a hollow part; the modification layer is partially arranged in the first color The layer is away from the surface of the optical film layer, and is partially disposed on the surface of the optical film layer exposed by the hollow part. The modification layer includes a second color layer and a coating layer disposed on the surface of the second color layer, The second color layer is close to the optical film layer and the optical transmittance is greater than 30%, or the coating layer is close to the optical film layer and the optical transmittance is greater than 30%, the optical transmittance of the first color layer is The overrate is less than 10%, the colors of the second color layer and the first color layer are different, the housing assembly has opposite inner and outer surfaces, and the direction from the optical film layer to the modification layer It is consistent with the direction from the outer surface to the inner surface.

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