CN111447776A

CN111447776A - Shell assembly, preparation method of shell assembly and electronic equipment

Info

Publication number: CN111447776A
Application number: CN202010452371.9A
Authority: CN
Inventors: 戚泽万; 李静
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2020-07-24

Abstract

The application provides a casing subassembly, including plastic casing and sclerosis layer, the surface of plastic casing has a plurality of pointed protruding structures, the sclerosis layer sets up the plastic casing has a side surface of pointed protruding structure. The shell assembly has a visual effect of flashing at multiple positions, the appearance of the shell assembly is enriched, and homogenization is avoided; meanwhile, the shell assembly has good performance and is more beneficial to application. The application also provides a preparation method of the shell assembly and an electronic device comprising the shell assembly.

Description

Shell assembly, preparation method of shell assembly and electronic equipment

Technical Field

The application belongs to the technical field of electronic products, and particularly relates to a shell assembly, a preparation method of the shell assembly and electronic equipment.

Background

With the continuous development of electronic technology, more and more electronic devices are provided. In order to enhance the competitiveness of electronic devices, the change of appearance effect is also receiving more attention. In the related art, the appearance effect of the electronic device is improved by changing the color, shape, and the like of the electronic device. However, these changes are less and less, the appearance effect of the electronic device is gradually single, and the homogenization phenomenon is serious.

Disclosure of Invention

In view of this, the application provides a shell assembly, a preparation method of the shell assembly and an electronic device, wherein the shell assembly has a visual effect of flashing at multiple positions, the appearance of the shell assembly is enriched, the appearance competitiveness of the electronic device is improved, homogenization is avoided, and meanwhile the shell assembly is good in performance and more beneficial to application of the shell assembly.

In a first aspect, the present application provides a housing assembly, including plastic casing and sclerosis layer, the surface of plastic casing has a plurality of protruding structures of point form, the setting of sclerosis layer is in the plastic casing has a side surface of the protruding structure of point form.

In a second aspect, the present application provides a method of making a housing assembly, comprising:

providing a plastic shell, wherein the surface of the plastic shell is provided with a plurality of pointed convex structures;

the plastic shell is provided with a surface forming hardening layer of the pointed convex structure.

The third aspect, this application provides an electronic equipment, including the display screen, and set up the apron and the casing subassembly of the relative both sides of display screen, the casing subassembly includes plastic casing and sclerosis layer, the surface of plastic casing has a plurality of protruding structures of point form, the setting of sclerosis layer is in the plastic casing has a side surface of the protruding structure of point form.

The application provides a shell assembly and a preparation method of the shell assembly, wherein light can be reflected on a pointed convex structure on the surface of a plastic shell to generate a flash effect, so that the shell assembly has a visual effect of flashing at multiple positions, the appearance of the shell assembly is enriched, homogenization is avoided, a hardened layer protects the shell assembly, and the performance of the shell assembly is improved; meanwhile, the preparation method of the shell assembly is simple and easy to operate, and industrial production can be realized; the electronic equipment with the shell assembly improves appearance competitiveness, avoids homogenization and has strong product expressive force.

Drawings

In order to more clearly explain the technical solution in the embodiments of the present application, the drawings that are required 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 present disclosure.

Fig. 2 is a schematic structural diagram of a housing assembly according to another embodiment of the present disclosure.

Fig. 3 is a schematic structural diagram of a housing assembly according to another embodiment of the present disclosure.

Fig. 4 is a schematic structural diagram of a housing assembly according to another embodiment of the present disclosure.

Fig. 5 is a schematic flow chart illustrating a method for manufacturing a housing assembly according to an embodiment of the present disclosure.

Fig. 6 is a flowchart illustrating operation 101 in fig. 5 according to an embodiment of the present disclosure.

Fig. 7 is a schematic flow chart illustrating a method for manufacturing a housing assembly according to another embodiment of the present disclosure.

Fig. 8 is a schematic flow chart illustrating a method for manufacturing a housing assembly according to another embodiment of the present disclosure.

Fig. 9 is a microscope view of a housing assembly provided in an embodiment of the present application.

Fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Description of reference numerals:

the display panel comprises a plastic shell-10, a hardening layer-20, a decorative film-30, a UV texture layer-31, a coating layer-32, a color layer-33, a cover bottom layer-40, a shell assembly-100, a display screen-200 and a cover plate-300.

Detailed Description

The following is a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present application, and these improvements and modifications are also considered as the protection scope of the present application.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1, a structural diagram of a housing assembly 100 according to an embodiment of the present disclosure is shown, which includes a plastic housing 10 and a hardened layer 20, wherein a surface of the plastic housing 10 has a plurality of pointed protruding structures, and the hardened layer 20 is disposed on a side surface of the plastic housing 10 having the pointed protruding structures.

In the related art, more and more electronic devices are used for improving the appearance effect by changing the color and the shape, the similarity of the appearances of the electronic devices is higher and higher, and the product competitiveness is not greatly improved; there are some electronic devices with drawn lines, CD lines, and cowhide-like lines to change the appearance of the electronic devices, but these lines have a single effect, and it is still necessary to change and enrich the appearance of the electronic devices. In the present application, a plastic housing 10 having a pointed protruding structure is provided, the pointed protruding structure can reflect light, and each pointed protruding structure flashes like a diamond, so that the appearance of the housing assembly 100 presents a flashing effect, the appearance effect of the housing assembly 100 is enriched, homogenization is avoided, and meanwhile, the appearance competitiveness of the housing assembly 100 can be greatly improved; the hardened layer 20 protects the housing assembly 100, thereby prolonging the service life and performance of the housing assembly 100, and facilitating the wide use of the housing assembly 100.

In the present application, the surface of the plastic housing 10 has a plurality of pointed protrusions, which gives the housing assembly 100 a glittering visual effect. In an embodiment of the present invention, when the housing assembly 100 includes only the plastic housing 10 and the hardened layer 20, the light transmittance of the plastic housing 10 is not limited, and in this case, the plastic housing 10 may be colorless and transparent, may also be colored and transparent, and may also be solid. In another embodiment of the present application, when the housing assembly 100 further includes a structure such as a decorative film 30 in addition to the plastic housing 10 and the hardened layer 20, the plastic housing 10 has a certain light transmittance in order to present an appearance effect of the structure such as the decorative film 30. Optionally, the optical transmittance of the plastic housing 10 is greater than 90%. Further, the optical transmittance of the plastic housing 10 is greater than 92%. Wherein the optical transmittance is the transmittance of light in the wavelength range of 380nm-780 nm.

In the present embodiment, the material of the plastic housing 10 can be, but is not limited to, any known plastic for housing. In one embodiment, the plastic housing 10 includes at least one of Polycarbonate (PC) and polymethyl methacrylate (PMMA), which has better mechanical properties and permeability, thereby improving the performance of the housing assembly 100. In another embodiment, optical grade plastics may be selected to achieve the desired optical transmittance requirements.

In the present application, the shape and size of the plastic housing 10 are not limited, and can be selected and designed according to actual needs, for example, the plastic housing 10 can be, but not limited to, a back shell and/or a middle frame of an electronic device, and the shape thereof can be a 2D shape, a 2.5D shape, or a 3D shape. In one embodiment, the plastic housing 10 can be formed by injection molding to have a desired shape, and the plastic housing 10 having a 2.5D shape or a 3D shape makes the housing assembly 100 more three-dimensional and smoother to touch. In another embodiment, the thickness of the plastic housing 10 is 0.05mm to 1mm, and may be, but not limited to, 0.05mm, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.8mm, 1mm, etc. to meet the requirement of the housing assembly 100 for impact resistance, and is not too thick, which meets the requirement of being light and thin.

In the embodiment of the present application, the plastic housing 10 includes a plastic housing body and a plurality of pointed protruding structures disposed on the surface of the plastic housing body, and the plastic housing body and the pointed protruding structures can be integrally formed. It is understood that the pointed protruding structure has a plurality of side surfaces, and the different side surfaces have included angles, so that the pointed protruding structure is also formed. The pointed protruding structures reflect light to achieve a flashing effect, and the shell assembly 100 presents flashing textures due to the plurality of pointed protruding structures.

In the embodiment of the present application, the pointed protrusion structure is a micron-sized structure, and at this time, the pointed protrusion structure reflects light, so that the appearance of the housing assembly 100 presents a flashing effect of star points, and the fineness is enhanced. In one embodiment, the height of the pointed protruding structures is 15 μm to 30 μm. Further, the height of the pointed convex structure is 17-25 μm. Further, the height of the pointed projection structure is 17 μm to 21 μm. Specifically, the height of the pointed projection structure may be, but is not limited to, 16 μm, 18 μm, 19 μm, 20 μm, 22 μm, 23 μm, 26 μm, or 28 μm. In the present application, the height of the pointed protruding structures can be calculated by, but not limited to, reading the surface texture features of the plastic housing 10 with the pointed protruding structures after laser scanning under a microscope. Optionally, the average height Rz of the pointed raised structures is 15 μm to 25 μm, and the maximum height Ry is 19 μm to 30 μm. As can be appreciated, Rz is the microscopic asperity ten point height and Ry is the contour maximum height. Further, the average height Rz of the pointed projection structures is 17 μm to 21 μm, and the maximum height Ry is 19 μm to 23 μm. In another embodiment, the lateral dimension of the pointed protruding structures is 80 μm-120 μm. Further, the lateral dimension of the pointed convex structure is 90-110 μm. In particular, the lateral dimension of the pointed protruding structures may be, but is not limited to, 85 μm, 95 μm, 100 μm, 105 μm, or 115 μm. Wherein, the lateral dimension represents the dimension in the direction perpendicular to the height direction of the pointed protruding structure on the surface of the plastic housing 10.

It is understood that the pointed protruding structures may be regularly-shaped protruding structures, and may also be irregularly-shaped protruding structures. In an embodiment of the present application, the pointed protrusion structure includes at least one of a pyramid structure, a pyramid-like structure, and a cone structure. Specifically, the pointed protrusion structure may be, but is not limited to, a triangular pyramid, a rectangular pyramid, a cone, and the like. It is understood that the pyramid-like structure and the pyramid-like structure each have a tip, and the side of the pyramid-like structure is a prismatic section, unlike the pyramid-like structure, the tip of the pyramid-like structure may be a plane or a curved surface, for example, the pyramid-like structure may include a truncated pyramid. When the pointed convex structure is a pyramid structure or a cone structure, part of reflected light is reflected out from the side surface, and part of reflected light is reflected out from the tip part; when the pointed convex structure is a pyramid-like structure, the reflected light at the tip part is relatively increased; after the light is reflected, the pointed convex structure has the flash effect. In one embodiment, when the tip of the pyramid-like structure is a curved surface, the radius of curvature may be 0.1 μm to 3 μm; specifically, the radius of curvature may be, but is not limited to, 0.1 μm, 0.5 μm, 1 μm, 2 μm, or 3 μm to achieve varying degrees of light reflection.

In the present application, the size and shape of each pointed protrusion structure may be the same or different. In an embodiment, at least one of the height, the lateral dimension, and the shape of the plurality of pointed protrusion structures is different, so that the housing assembly 100 can exhibit an obvious flicker effect at different angles, thereby enhancing the appearance expression.

In the application, the plurality of pointed convex structures can be continuously arranged, can also be arranged at intervals, and can also be partially continuously arranged and partially arranged at intervals. The continuously arranged pointed convex structures can present continuous flash points, so that the flash effect is more concentrated; the pointed convex structures arranged at intervals can disperse the flash points, and the flash effect of each pointed convex structure under different angles can be better shown. In one embodiment, the plurality of pointed protrusions may be regularly arranged on the surface of the plastic housing 10, so as to exhibit a uniformly dispersed glittering effect. In another embodiment, the plurality of pointed protrusions are irregularly arranged on the surface of the plastic housing 10, which better conforms to the actual starlight flashing effect.

In the embodiment of the present application, the roughness Ra of the surface of the plastic housing 10 having the pointed protruding structures is 2.3 μm to 3 μm, so as to improve the distribution of the pointed protruding structures on the plastic housing 10, and the flashing effect of the housing assembly 100 is more obvious and dense. In one embodiment, the distribution density of the pointed convex structures is 500/cm²-2000 pieces/cm²To realize the effect of star-point. Further, the distribution density of the pointed convex structures is 700/cm²1900/cm². Furthermore, the distribution density of the pointed convex structures is 800/cm²1800 pieces/cm²And a denser and finer glittering sand effect is presented. In the present application, the pointed protrusions with the above density avoid the non-flashing effects such as large-area reflection or large-area fog surface, and ensure the non-flashing effects on the surface of the casing 100A dense, fine and rich flashing effect is exhibited.

In the present application, roughness Ra of the surface of the plastic case 10 having the pointed protrusion structure, average height Rz of the pointed protrusion structure, maximum height Ry of the pointed protrusion structure, and distribution density were measured using a sanfeng roughness meter SJ-310 (accuracy 1 μm). In one embodiment, the roughness meter is disposed on the surface of the plastic housing 10 having the pointed protruding structure, and the roughness meter can detect and display the values of the parameters after the operation. It will be appreciated that other possible instruments may be used to measure the above parameters.

In the present application, the plastic housing 10 may be formed by injection molding. In one embodiment of the present application, the injection molding of the plastic housing 10 includes: providing an injection mold, wherein the injection mold comprises a male mold and a female mold which are correspondingly arranged; forming a plurality of concave structures on the surface of the female die close to the male die, wherein the concave structures are matched with the pointed convex structures; closing the male die and the female die, and forming an injection molding space between the male die and the female die; and injecting plastic into the injection molding space, and performing an injection molding process to obtain the plastic shell 10. The male die can also be called a rear die, a movable die, a male die, a lower die or a male die, and the female die can also be called a front die, a fixed die, a female die, an upper die or a female die.

In order to make the surface of the plastic housing 10 have a plurality of pointed protruding structures, correspondingly, a plurality of concave structures are formed on the surface of the female mold close to the male mold, and the concave structures are matched with the pointed protruding structures. In an embodiment of the present application, a concave structure may be formed on the surface of the master mold by, but not limited to, a laser etching process, so as to finally form a micro-texture on the surface of the master mold. Because the pointed convex structure is small, the corresponding concave structure also needs to be fine enough, and the forming of the concave structure can be finely controlled through the laser etching process, so that the pointed convex structure required on the surface of the plastic shell 10 is formed, and the flash effect is realized. Specifically, the laser engraving may be performed, but not limited to, using nanosecond laser processing equipment of summer miler (GF) of switzerland. In another embodiment of the present application, the master mold is placed in a laser etching machine to form a recess structure. In another embodiment of the present application, after the laser etching, the master mold is subjected to sand blasting to remove burrs and the like generated by the laser etching, so that the surface performance of the master mold is more in line with the use requirement. The size, distribution density, shape and the like of the concave structures can be correspondingly set according to the size of the pointed convex structures required in practice. In the application, the concave structure formed on the female die is tiny, relatively low in rigidity and strength and fragile, so that the injection molding can be carried out in an injection molding workshop with dust-free grade at least over ten thousand grades. In one embodiment, the depth of the recessed features may be 15 μm to 30 μm and the lateral dimension may be 80 μm to 120 μm. In one embodiment, the plastic may be dried before being injected into the injection molding space, for example, the plastic may be dried at 80 ℃ to 120 ℃ for 3h to 8h to remove moisture, which is beneficial for the subsequent injection molding. In another embodiment, the plastic housing 10 can be formed by plastic melting, molding, adjusting, mold closing, injecting glue for filling, pressure maintaining for molding, cooling, and mold opening. Optionally, the plastic melting temperature is 220-260 ℃, the injection pressure of injection filling is 110-150 MPa, the injection time is 2-5 s, the pressure of pressure-maintaining molding is 35-60 MPa, and the pressure-maintaining molding time is 30-60 s. Furthermore, the melting temperature of the plastic is 230-250 ℃, the injection pressure of the injection filling is 120-140 MPa, the injection time is 2-4 s, the pressure of the pressure-maintaining molding is 40-50 MPa, and the pressure-maintaining molding time is 30-40 s.

In the present application, the hardened layer 20 protects the plastic housing 10, improving the performance and the service life of the housing assembly 100. The hardened layer 20 has a certain light transmittance, so that the housing assembly 100 can exhibit the glittering effect of the plastic housing 10. Optionally, the optical transmittance of the plastic housing 10 is greater than 85%. Further, the optical transmittance of the plastic housing 10 is greater than 90%.

In the present embodiment, the thickness of the hardened layer 20 is 20 μm to 30 μm. Further, the thickness of the hardened layer 20 is 21 μm to 28 μm. Further, the thickness of the hardened layer 20 is 22 μm to 26 μm. In the present application, the thickness of the hardened layer 20 does not differ much from the height of the pointed raised structures. In one embodiment, the thickness of the hardened layer 20 is smaller than the height of the pointed protruding structures, so that the pointed protruding structures can still be touched on the surface of the hardened layer 20, and at the same time, because the pointed protruding structures are tiny, even if the pointed protruding structures are touched, the pointed protruding structures still have a smoother hand feeling. For example, the thickness of the hardened layer 20 is smaller than the average height of the pointed raised structures, so that most of the pointed raised structures can be touched on the surface of the hardened layer 20. Furthermore, when the roughness Ra of the surface of the plastic shell 10 having the pointed protruding structures is 2.3 μm to 3 μm, the distribution of the pointed protruding structures is dense, and the surface of the hardened layer 20 also has the hand feeling of the dense pointed protruding structures, thereby presenting a smooth hand feeling like silk, improving the touch feeling of the appearance of the shell assembly 100, and being more beneficial to the application thereof. In one embodiment, the surface of the hardened layer 20 may have a roughness of 0.2 μm to 0.5 μm, and have a silky feel. Among the correlation technique, the feeling on sclerosis layer 20 surface is astringent, can't realize smooth feeling, and the present embodiment of the application sets up through mutually supporting of sharp protruding structure and sclerosis layer 20, has improved the surperficial feeling on current sclerosis layer 20, has further promoted casing subassembly 100's feel and competitiveness.

In the present embodiment, the material of the hardened layer 20 includes at least one of urethane acrylate, silicone resin, and perfluoropolyether acrylate. In the present application, a hardening liquid may be applied on the surface of the plastic housing 10, and the hardened layer 20 may be formed after the hardening liquid is cured. The curing liquid may be, but is not limited to, an ultraviolet light curing type curing liquid, a thermosetting type curing liquid, or an ultraviolet light-thermal dual curing type curing liquid. For example, a UV curable curing liquid of PPG or Hongtai technology may be selected, and other commercially available thermal curable curing liquids or UV-thermal dual curable curing liquids may also be selected. In one embodiment, a fingerprint-resistant material and/or an anti-glare material may be added to the hardening liquid to improve the anti-fouling, anti-fingerprint-adhesion, and anti-glare effects of the hardened layer 20. In another embodiment, an ultraviolet light curing type hardening liquid is used, which includes urethane acrylate and an initiator. Optionally, the mass ratio of the polyurethane acrylate to the initiator is 100 (3-10). Further, the mass ratio of the polyurethane acrylate to the initiator is 100 (3-8). The hardening liquid can be coated on part or all of the surface of the plastic shell 10; when the hardening liquid is coated on the whole surface of the plastic shell 10, the whole plastic shell 10 can be protected, and the application requirements are met. Optionally, the coating comprises at least one of spraying, dipping, and curtain coating. In one embodiment, the coating thickness is 20 μm to 30 μm. Specifically, the hardened layer 20 may be formed by one or more coating and curing. In another embodiment, the ultraviolet curing type hardening liquid is coated and then cured, wherein the UV curing energy is 600mJ-900mJ, and the time is 10s-20 s. In another embodiment of the present application, the hardening liquid may further include glass powder, and the glass powder may reflect light, so as to further enhance the glittering effect, and make the appearance effect of the housing assembly 100 more obvious. Optionally, the particle size of the glass powder is 40-80 μm. Furthermore, the particle size of the glass powder is 45-70 μm. Specifically, the particle size of the glass frit may be, but is not limited to, 50 μm, 55 μm, 60 μm, or 75 μm. Optionally, the mass content of the glass powder in the hardening liquid is 1-8 per mill. Furthermore, the mass content of the glass powder in the hardening liquid is 2-5 per mill. Specifically, the mass content of the glass powder in the hardening liquid is 1%, 3%, 4%, 6% or 7%. Because the glass powder is easy to settle in the solution, the hardening liquid needs to be continuously stirred in the coating process, so that the glass powder is uniformly distributed in the hardening liquid.

In the present embodiment, patterns, characters, etc. may be further silk-screened on the surface of the plastic housing 10 away from the hardened layer 20, specifically, but not limited to silk-screening trademark patterns (L ogo), etc., to further change the appearance of the housing assembly 100, thereby enhancing competitiveness, in an embodiment, the trademark patterns are formed by silk-screening ink on the surface of the plastic housing 10 and curing, at this time, the plastic housing 10 has certain light transmittance, so that the housing assembly 100 can present the appearance of the trademark patterns, specifically, the ink may be, but not limited to, mirror-surface silver ink, optionally, the silk-screened screen plate is 400 mesh to 500 mesh, has 6N to 9N tension, the scraper angle is 50 ° to 80 °, optionally, curing includes baking at 50 ℃ to 80 ℃ for 20min to 60min, in a specific embodiment, the screen plate is silk-screened with 450 mesh and 8N tension, 70 ° squeegee is used to screen the mirror-surface silver ink, and is baked at 80 ℃ for 30 min.

Referring to fig. 2, a schematic structural diagram of a housing assembly 100 according to another embodiment of the present disclosure is different from fig. 1 in that the housing assembly 100 further includes a decoration film 30, and the decoration film 30 is disposed on a side surface of the plastic housing 10 away from the curing layer 20. In the embodiment of the present application, the decoration film 30 may include at least one of a UV texture layer 31, a coating layer 32 and a color layer 33, which further modify the appearance effect of the housing assembly 100 to enrich the appearance effect. In the present application, the orthographic projection of the decoration film 30 on the plastic housing 10 can completely or partially cover the plastic housing 10, thereby generating different appearance effects.

In the present application, the UV texture layer 31 may cause a change in light and shadow flow of the housing assembly 100 to enhance the appearance performance, in the present embodiment, the UV texture layer 31 may be formed by applying an UV curable adhesive, and performing transfer and curing, in one embodiment, a transfer mold having a target texture is provided, the UV curable adhesive is applied to the transfer mold, a film is placed on the UV curable adhesive, and the transfer mold is pressed to form the UV texture layer 31 after curing, optionally, curing may be performed by an L ED lamp and/or a mercury lamp, further, primary curing may be performed by a L ED lamp, and the mercury lamp may be secondarily cured to ensure that the UV curable adhesive is completely cured, and further, the L ED lamp may have a curing energy of 1200mJ/cm²-2600mJ/cm²The curing energy of the mercury lamp can be 800mJ/cm²-1500mJ/cm². Optionally, the thickness of the ultraviolet light curing adhesive is 5 μm to 8 μm. In one embodiment of the present application, the optical transmittance of the UV texture layer 31 is greater than 85%. Further, the optical transmittance of the UV texture layer 31 is greater than 90% to meet the application requirements. Optionally, the thickness of the UV texture layer 31 may be 4 μm to 7 μm, specifically, but not limited to, 4 μm, 4.5 μm, 5 μm, 5.5 μm, 6 μm, 7 μm, and the like, and in this thickness range, a good texture effect may be formed, and an excessively large thickness may cause a poor impact resistance effect of the UV texture layer 31 and may easily crack, and an excessively small thickness may cause an insignificant texture, an insignificant visual appearance of light and shadow flow, and at the same time, a difficulty in controlling the manufacturing process is increased.

In the present application, the film coating layer 32 makes the housing assembly 100 have different gloss variations at different angles, which brings different textures and improves the appearance expressive force. In the present embodiment, the coating layer 32 may be formed by, but not limited to, physical vapor deposition, such as evaporation, sputtering, ion plating, and the like. In one embodiment, the coating 32 may be formed by ion sputtering by hanging the film in a coater, followed by vacuum and pretreatment of the material. In the present application, the coating layer 32 includes at least one of an optical film layer and a non-conductive metal layer. The optical film layer presents different gloss texture at different angles to bring light color change, and the non-conductive metal layer can bring metal gloss texture. Optionally, the coating layer 32 may be a single-layer film structure or a multi-layer film structure.

It will be appreciated that the optical film layer is a layer of optical medium material that transmits light through its interface, and that the reflection, refraction, etc. of light passing through the optical film layer can be changed to cause the housing assembly 100 to exhibit a gloss change, such as a visual effect of different color gloss at different angles. The reflectivity, the refractive index and the light transmittance of the optical film layer are changed by changing the material, the thickness, the layer number and the like of the optical film layer, so that different visual effects are realized, and the requirements under different scenes are met. In the present application, the optical transmittance of the optical film layer is greater than 50%. Optionally, the thickness of the optical film layer is 150nm to 800nm, specifically, but not limited to 150nm, 180nm, 250nm, 300nm, 500nm, 600nm, 700nm, etc., when the thickness is too thin, the gloss texture effect of the optical film layer is too weak, and when the thickness is too thick, the stress in the film layer is too large, the film layer is easy to fall off, and the thickness range is favorable for presenting the visual effect of the optical film layer, and simultaneously, the service life of the optical film layer is ensured.

In the present embodiment, the material of the optical film layer may be inorganic or organic. Optionally, the organic substance comprises at least one of a polyether, a polyester, a fluoropolymer, and a silicon-containing polymer. When the material of optics rete is the organic matter, optics rete flexibility is good, and the bendability is good, can tailor the optics rete that obtains required size. Optionally, the inorganic substance includes at least one of an inorganic oxide and an inorganic fluoride. Further, the optical film layer comprises TiO₂、Ti₃O₅、NbO₂、Nb₂O₃、Nb₂O₂、Nb₂O₅、Al₂O₃、SiO₂And ZrO₂At least one of (1). In one embodiment, the optical film layer may be TiO₂Layer, Ti₃O₅Layer, NbO₂Layer, Nb₂O₃Layer, Nb₂O₂Layer, Nb₂O₅Layer, SiO₂Layers, etc., with a thickness of 150nm-500 nm. In another embodiment, the optical film layer may be TiO₂Layer, Ti₃O₅Layer, NbO₂Layer, Nb₂O₃Layer, Nb₂O₂Layer, Nb₂O₅Layer of Al₂O₃Layer, SiO₂Layer and ZrO₂A combination of at least two of the layers. In one embodiment, the side near the plastic housing 10 is TiO₂Layer or SiO₂A layer with a thickness of 150nm-500nm and TiO on the side far away from the plastic shell 10₂Layer, Nb₂O₅Layer of Al₂O₃Layer and SiO₂At least one of the layers, so that the housing assembly 100 has a colorful and glossy appearance.

In the present application, the non-conductive metal layer provides the housing assembly 100 with a metallic luster, thereby improving the metallic texture. The non-conductive metal layer is made of a metal material, and may include, but is not limited to, indium, tin, or an indium-tin alloy. In one embodiment, the non-conductive metal layer can be prepared by physical vapor deposition, so that the thickness uniformity is good, the compactness is high, the metal texture of the shell assembly 100 is improved, and the wireless communication transmission effect is not influenced when the shell assembly is used for electronic equipment. In one embodiment, the non-conductive metal layer can be made by evaporating pure indium with an electron gun. In another embodiment, the non-conductive metal layer may be made by magnetron sputtering indium tin alloy plating. Specifically, the coating time can be adjusted according to the required appearance effect, and the longer the coating time is, the thicker the non-conductive metal layer is, and the brighter the metallic luster effect is. Optionally, the thickness of the non-conductive metal layer is 5nm-50nm, which is beneficial to preparing the non-conductive film layer. In this application, when the coating layer 32 includes an optical film layer and a non-conductive metal layer, since the non-conductive metal layer has relatively low light transmittance, the optical film layer is disposed between the plastic housing 10 and the non-conductive metal layer, so that the appearance effect of each layer of structure can be presented.

In the present application, the color layer 33 is used for coloring, providing a color appearance effect to the housing assembly 100. The color of the color layer 33 may be, but is not limited to, yellow, red, blue, green, purple, etc.; the color plate can also be spliced by multiple colors to form a color collision visual effect; and may be a gradient color layer. In one embodiment, the two or more colors are graded by disposing different colors of ink in different areas, so as to obtain the color layer 33 with graded color, for example, the color difference between adjacent ink areas is less than 2, thereby better achieving the grading effect. In another embodiment, by disposing different color inks in different areas, color collision of two or more colors is realized, and the color layer 33 with color collision effect is obtained, for example, the color difference between adjacent ink areas is greater than 4, so as to better realize color collision effect. In the present application, the color layer 33 may be a solid layer or a transparent layer.

In the present embodiment, the color layer 33 may be formed by one or more processes of coating, printing, casting, calendering, and the like. In one embodiment, the color ink may be applied by spraying, and cured to form the color layer 33. Optionally, the curing is baking at 60-90 ℃ for 20-40 min. In the present application, the thickness of the color layer 33 is not particularly limited, for example, the thickness of the color layer 33 may be 10 μm to 20 μm, and specifically may be, but is not limited to, 10 μm, 12 μm, 15 μm, 18 μm, 19 μm, and the like. The color layer 33 within this range not only enables the housing assembly 100 to have a better color appearance, but also does not increase the thickness of the housing assembly 100 too much, which is beneficial to the lightness and thinness of the whole structure. In one embodiment, the first printed ceramic white background is pre-baked at 80 ℃ for 30 min; the second printed ceramic blank is pre-baked at 80 deg.C for 30min to give the shell assembly 100 a ceramic white appearance with a sparkling effect.

Referring to fig. 3, a schematic structural diagram of a housing assembly 100 according to an embodiment of the present disclosure is shown, in which a decoration film 30 includes a UV texture layer 31, a coating layer 32, and a color layer 33. In an embodiment of the present application, when the film coating layer 32 only has an optical film layer, the light transmittance is good, the color layer 33 may be disposed on a surface of the film coating layer 32 on a side away from the plastic housing 10, and the UV texture layer 31 is disposed between the plastic housing 10 and the film coating layer 32; at this moment, the color layer 33 and the coating layer 32 can both play a supporting role in the texture effect of the UV texture layer 31, so that the shell assembly 100 can more obviously present the texture effect, and the visual effect is rich. The color layer 33 may be a solid layer or a transparent layer. In another embodiment of the present application, the color layer 33 may be disposed between the film coating layer 32 and the plastic housing 10, and the UV texture layer 31 is disposed between the color layer 33 and the plastic housing 10, at this time, the color layer 33 is a transparent layer, and the film coating layer 32 may include an optical film layer, and may also include a non-conductive metal layer, and the visual effect of each layer may be presented. In another embodiment of the present application, the color layer 33 may be disposed between the film coating layer 32 and the plastic housing 10, and the UV texture layer 31 is disposed between the color layer 33 and the film coating layer 32, at this time, the color layer 33 is a transparent layer, so that the appearance effects of the UV texture layer 31 and the film coating layer 32 can be shown, and the film coating layer 32 may include an optical film layer or a non-conductive metal layer, and the visual effect of each layer can be shown.

In an embodiment of the present application, when the decoration film 30 includes the UV texture layer 31 and the coating layer 32, the UV texture layer 31 is disposed between the plastic housing 10 and the coating layer 32. At this time, the coating layer 32 can play a role in supporting the visual effect of the UV texture layer 31, and can more obviously present the appearance effect of the UV texture layer 31; meanwhile, the shell assembly 100 with the UV texture layer 31 and the coating layer 32 has colorful colors and texture effects with light and shadow flowing change, and the appearance expressive force of the shell assembly 100 is greatly improved. In another embodiment of the present application, when the decoration film 30 includes the UV texture layer 31 and the color layer 33, the UV texture layer 31 is disposed between the plastic housing 10 and the color layer 33. At this moment, color layer 33 can play a set of effect to the visual effect of UV texture layer 31, and the outward appearance effect that presents UV texture layer 31 that can be more obvious has the casing subassembly 100 outward appearance expressive force of UV texture layer 31 and color layer 33 to be promoted. In another embodiment of the present application, when the decoration film 30 includes the film coating layer 32 and the color layer 33, the setting can be performed according to the transmittance of the film coating layer 32 and the color layer 33, and the layer structure close to the plastic housing 10 needs to have a certain transmittance, so that the appearance of the layer structure far from the plastic housing 10 is shown.

In the present application, the decorative film 30 may be attached to the plastic housing 10 by an adhesive after being formed, so as to be disposed on the surface of the plastic housing 10. Specifically, the adhesive may be, but is not limited to, an optical adhesive. In the embodiment of the present application, the decoration film 30 further includes a substrate layer disposed between at least one of the UV texture layer 31, the coating layer 32 and the color layer 33 and the plastic housing 10. The substrate layer can play the set off effect to UV texture layer 31, coating film layer 32 and colour layer 33 for UV texture layer 31, coating film layer 32 and colour layer 33 can directly be the shaping on the substrate layer, and then setting up through laminating of substrate layer and plastic casing 10, realize abundant outward appearance. In the present application, a single-layer or multi-layer structure may be formed on the substrate layer according to the above-described internal layer structure of the decorative film 30. In one embodiment, a UV die may be used to transfer the texture onto the substrate layer, forming a UV texture layer 31; placing the UV texture layer 31 in a film coating machine, and forming a film coating layer 32 on the surface of the UV texture layer 31; then coating color ink on the surface of the coating layer 32 to form a color layer 33; and finally, the substrate layer is connected with the plastic shell 10 through optical cement, the preparation process is more convenient, the forming effect of each layer is good, and the appearance effect is good. Specifically, the material of the substrate layer may be, but is not limited to, at least one of polyethylene terephthalate (PET) and Polyurethane (PU). Optionally, the thickness of the substrate layer is 50 μm to 70 μm, which not only can play a supporting role, but also does not increase the thickness of the whole structure too much. In an embodiment, the substrate layer is an explosion-proof film, which has excellent impact resistance, so as to improve the performance of the housing assembly 100, and simultaneously, the UV texture layer 31, the film coating layer 32 and the color layer 33 are also protected to a certain extent. In the application, a decorative mother film with a larger size can be prepared, and then the decorative mother film is punched into a piece, so that the decorative film 30 matched with the plastic shell 10 in size is obtained, and the production efficiency is improved. In another embodiment, the lamination may be performed in a vacuum laminator to improve the lamination strength, such as but not limited to a 3D vacuum laminator. Optionally, the attaching temperature is 15-25 ℃, and the attaching time is 20-40 s, so that a good attaching effect is realized, and the production yield is improved.

Referring to fig. 4, which is a schematic structural diagram of the housing assembly 100 according to another embodiment of the present disclosure, the housing assembly 100 may further include a cover bottom layer 40, and an optical transmittance of the cover bottom layer 40 is less than or equal to 1%. When the housing assembly 100 is used in an electronic device, the bottom cover layer 40 can shield the components inside the electronic device, protect the internal layer structure, and can also be used as an adhesive surface. In one embodiment, when the housing assembly 100 includes the decoration film 30, the cover bottom layer 40 is disposed on a side surface of the decoration film 30 away from the plastic housing 10. Specifically, a cover-and-base ink, such as a black ink, a gray ink, a white ink, etc., may be printed on the decoration film 30 a plurality of times, and then baked and cured. The bottom covering ink comprises colored ink, a curing agent, a diluent and an auxiliary agent. And baking the cover bottom ink to form a cover bottom layer. Optionally, the baking temperature may be 65-85 ℃, the baking time may be 40-80 min, and the thickness of the cover bottom layer 40 formed after baking is 6-10 μm. Light leakage from the cap bottom layer 40 can be further prevented by a method of repeatedly applying the coating film. In one embodiment, the decoration film 30 may be printed with titanium crystal black and baked at 80 ℃ for 60min to form the cap layer 40. In the embodiment of the present application, the bottom cover layer 40 may be formed after the decoration film 30 and connected with the plastic housing 10 together with the decoration film 30; the cover bottom layer 40 may be formed on the decorative film 30 after the decorative film 30 is attached to the plastic housing 10.

According to the embodiment of the application, the plastic shell 10 with the pointed convex structure is arranged, so that light is reflected by the pointed convex structure, the appearance of the shell assembly 100 presents a flashing effect, the visual effect is enriched, homogenization is avoided, and the product competitiveness is improved; meanwhile, the case assembly 100 is protected by the hardening layer 20, so that the performance and the service life are improved, and the application is facilitated.

Referring to fig. 5, a schematic flow chart of a method for manufacturing a housing assembly according to an embodiment of the present application is shown, where the method for manufacturing the housing assembly 100 according to any of the embodiments includes:

operation 101: providing a plastic shell, wherein the surface of the plastic shell is provided with a plurality of pointed convex structures.

Operation 102: a hardened layer is formed on the surface of the plastic shell with a pointed convex structure.

In operation 102, a hardening liquid, which may be but not limited to an ultraviolet curing hardening liquid, a thermosetting hardening liquid, or an ultraviolet-thermal dual curing hardening liquid, may be applied on the surface of the plastic housing having the pointed protruding structure and cured to form a hardened layer. Optionally, the coating comprises at least one of spraying, dipping, and curtain coating. In one embodiment, the coating thickness is 20 μm to 30 μm. Specifically, the hardened layer may be formed by one or more coating and curing. In another embodiment, the ultraviolet curing type hardening liquid is coated and then cured, wherein the UV curing energy is 600mJ-900mJ, and the time is 10s-20 s. In another embodiment of the present application, the hardening liquid may further contain glass powder, the particle size of the glass powder is 40 μm to 80 μm, and the mass content of the glass powder in the hardening liquid is 1% to 8% by mass, so as to further enhance the flashing effect and make the appearance effect of the housing assembly more obvious.

Referring to fig. 6, a schematic flow chart of operation 101 in fig. 5 according to an embodiment of the present application includes:

operation 1011: and providing an injection mold, wherein the injection mold comprises a male mold and a female mold which are correspondingly arranged, a plurality of concave structures are formed on the surface of the female mold close to the male mold, and the concave structures are matched with the pointed convex structures.

In operation 1011, a recess structure may be formed on the surface of the master mold by, but not limited to, a laser etching process. In one embodiment, the laser etching power is 30W-60W, and the laser etching speed is 600mm/s-1200 mm/s. Furthermore, the laser etching power is 40W-50W, and the laser etching speed is 800mm/s-1000 mm/s.

Operation 1012: and (3) closing the male die and the female die, and forming an injection molding space between the male die and the female die.

Operation 1013: and injecting plastic into the injection molding space, and performing an injection molding process to obtain the plastic shell.

In operation 1013, the plastic housing may be formed by plastic melting, molding, debugging, mold closing, injecting glue for filling, pressure maintaining for forming, cooling, and mold opening. Optionally, the plastic melting temperature is 220-260 ℃, the injection pressure of injection filling is 110-150 MPa, the injection time is 2-5 s, the pressure of pressure-maintaining molding is 35-60 MPa, and the pressure-maintaining molding time is 30-60 s. Furthermore, the melting temperature of the plastic is 230-250 ℃, the injection pressure of the injection filling is 120-140 MPa, the injection time is 2-4 s, the pressure of the pressure-maintaining molding is 40-50 MPa, and the pressure-maintaining molding time is 30-40 s.

In the embodiment of the application, patterns, characters and the like can be printed on the surface of the plastic shell far away from the hardened layer in a silk-screen mode, specifically, but not limited to, silk-screen trademark patterns (L ogo) and the like, the appearance of the shell assembly is further changed, competitiveness is improved, optionally, a silk-screen plate is 400 meshes-500 meshes and has tension of 6N-9N, a scraper angle is 50 degrees-80 degrees, curing comprises baking at 50 degrees-80 degrees for 20min-60min, and the ink can be, but not limited to, mirror-surface silver ink.

Referring to fig. 7, a schematic flow chart of a method for manufacturing a housing assembly according to another embodiment of the present disclosure includes:

operation 201: providing a plastic shell, wherein the surface of the plastic shell is provided with a plurality of pointed convex structures.

Operation 202: forming a hardened layer on the surface of the plastic shell with the pointed convex structure;

operation 203: the surface of one side of the plastic shell far away from the hardening layer is formed into a decorative film, and the decorative film comprises at least one layer of a UV texture layer, a coating film layer and a color layer.

In one embodiment, a transfer mold having a target texture is provided, an ultraviolet light-curable adhesive is coated on the transfer mold, a film is placed on the ultraviolet light-curable adhesive and pressed against the transfer mold, and the UV texture layer is formed after curing, and optionally, curing may be performed by an L ED lamp and/or a mercury lampThe UV curing glue is fully cured by using L ED lamp for primary curing and mercury lamp for secondary curing, furthermore, L ED lamp curing energy can be 1200mJ/cm²-2600mJ/cm²The curing energy of the mercury lamp can be 800mJ/cm²-1500mJ/cm²。

In the embodiments of the present application, the coating layer may be formed by, but not limited to, physical vapor deposition, such as evaporation, sputtering, ion plating, and the like. In the present application, the coating layer includes at least one of an optical film layer and a non-conductive metal layer. In one embodiment, the coating may be formed by ion sputtering by hanging the film in a coater, followed by vacuum and pretreatment of the material.

In the embodiments of the present application, the color layer may be formed by, but not limited to, one or more processes of coating, printing, casting, calendering, and the like. In one embodiment, the color ink may be applied by spraying, and cured to form the color layer. Optionally, the curing is baking at 60-90 ℃ for 20-40 min.

In this application embodiment, the decorative film still includes the substrate layer, and the substrate layer sets up in at least one deck in UV texture layer, coating film layer and the colour layer, and between the plastic casing. In the present application, a single-layer or multi-layer structure may be formed on the substrate layer according to the above-described inner layer structure of the decorative film. In one embodiment, a UV die may be used to transfer the texture onto the substrate layer, forming a UV texture layer; placing the UV texture layer in a film coating machine, and forming a film coating layer on the surface of the UV texture layer; then coating color ink on the surface of the coating layer to form a color layer; and finally, the substrate layer is connected with the plastic shell through optical cement, the preparation process is more convenient, the forming effect of each layer is good, and the appearance effect is good.

Referring to fig. 8, a schematic flow chart of a method for manufacturing a housing assembly according to another embodiment of the present disclosure includes:

operation 301: providing a plastic shell, wherein the surface of the plastic shell is provided with a plurality of pointed convex structures.

Operation 302: forming a hardened layer on the surface of the plastic shell with the pointed convex structure;

operation 303: printing cover bottom ink on the surface of one side of the plastic shell, which is far away from the hardened layer, to form a cover bottom layer, wherein the optical transmittance of the cover bottom layer is less than or equal to 1%.

In operation 303, the cover bottom layer may shield components inside the electronic device and protect the internal layer structure, and may also be used as an adhesive surface. The cover bottom ink comprises colored ink, a curing agent, a diluent and an auxiliary agent, and is baked to form the cover bottom layer. Optionally, the baking temperature can be 65-85 ℃, and the baking time can be 40-80 min.

Fig. 9 is a microscope image of a housing assembly according to an embodiment of the present disclosure, which is an appearance effect observed in a 50 × lens optical microscope. Can obviously see the pointed protruding structure that has comparatively densely distributed on the casing subassembly, form the texture of glistening, also prove that the casing subassembly that this application provided has the glistening effect of star point, promoted casing subassembly's outward appearance effect.

In an embodiment of the present application, the method of manufacturing a housing assembly further comprises performing computer numerically controlled precision machining (CNC machining). And redundant leftover materials can be milled by CNC machining, so that the shell assembly with the final required appearance effect is obtained. In one embodiment, a fine engraving machine is adopted for processing to ensure the precision of the size, and the processing precision is within +/-8 mu M, so that a shell assembly with higher quality is obtained. In another embodiment, the CNC engraving and milling machine processing parameters are: the main shaft rotating speed is 45000-55000 r/min, and the feeding speed is 1500-2000 mm/min; the process improves the product yield and ensures the processing efficiency.

The preparation method of the shell assembly is simple to operate, easy for large-scale production, capable of achieving the shell assembly with the glittering appearance effect, capable of enhancing the appearance variability, capable of avoiding homogenization and beneficial to application of the shell assembly.

The application also provides an electronic device comprising the shell assembly in any one of the above embodiments. It is understood that the electronic device may be, but is not limited to, a cell phone, a tablet, a laptop, a watch, MP3, MP4, GPS navigator, digital camera, etc. The following description will be given taking a mobile phone as an example.

Referring to fig. 10, which is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure, the electronic device includes a display screen 200, and a cover plate 300 and a housing assembly 100 disposed on opposite sides of the display screen 200, the housing assembly 100 includes a plastic housing 10 and a hardened layer 20, a surface of the plastic housing 10 has a plurality of pointed protruding structures, and the hardened layer 20 is disposed on a side surface of the plastic housing 10 having the pointed protruding structures. It will be appreciated that the housing assembly 100 has oppositely disposed inner and outer surfaces, wherein the inner and outer surfaces are referenced to the use condition of the housing assembly 100. The housing assembly 100 is applied to an electronic device, and has an inner surface facing the inside of the electronic device and an outer surface facing the outside of the electronic device. In the present application, the hardened layer 20 is disposed on a side surface of the plastic housing 10 away from the cover 300. This casing subassembly 100 can give the luminous visual effect of flashing of many places of electronic equipment, has richened electronic equipment's outward appearance expressive force, has avoided the homogenization, and performance promotes, and product competitiveness improves.

The foregoing detailed description has provided for the embodiments of the present application, and the principles and embodiments of the present application have been presented herein for purposes of illustration and description only and to facilitate understanding of the methods and their core concepts; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. The utility model provides a shell subassembly, its characterized in that includes plastic casing and sclerosis layer, the surface of plastic casing has a plurality of pointed protruding structures, the setting of sclerosis layer is in the plastic casing has a side surface of pointed protruding structure.

2. The housing assembly of claim 1, wherein the plastic housing has a surface with the pointed protruding structures with a roughness Ra of 2.3 μm to 3 μm.

3. The housing assembly of claim 1, wherein the pointed protrusion structures are micron-sized structures having a height of 15 μ ι η to 30 μ ι η and a lateral dimension of 80 μ ι η to 120 μ ι η.

4. The housing assembly of claim 1, wherein the pointed raised structures comprise at least one of pyramidal structures, pyramid-like structures, and conical structures.

5. The housing assembly of claim 1, wherein the hardened layer comprises glass frit having a particle size of 40 μm to 80 μm.

6. The housing assembly of claim 1, wherein the hardened layer has a thickness of 20 μ ι η to 30 μ ι η.

7. The housing assembly of claim 1, wherein the plastic housing is injection molded.

8. The housing assembly of claim 1 further comprising a decorative film disposed on a side surface of the plastic housing remote from the hardened layer, the decorative film comprising at least one of a UV texture layer, a coating layer, and a color layer.

9. The housing assembly of claim 8 wherein said decorative film further comprises a substrate layer disposed between said at least one of a UV textured layer, a film coating layer, and a color layer and said plastic housing.

10. The housing assembly of claim 1, further comprising a cover substrate layer disposed on a side surface of the plastic housing away from the hardened layer, wherein an optical transmittance of the cover substrate layer is less than or equal to 1%.

11. A method of making a housing assembly, comprising:

12. The method of manufacturing of claim 11, wherein providing the plastic housing comprises:

providing an injection mold, wherein the injection mold comprises a male mold and a female mold which are correspondingly arranged, a plurality of concave structures are formed on the surface of the female mold close to the male mold, and the concave structures are matched with the pointed convex structures;

closing the male die and the female die, and forming an injection molding space between the male die and the female die;

and injecting plastic into the injection molding space, and obtaining the plastic shell through an injection molding process.

13. The method of claim 12, wherein the recessed structure is formed on the surface of the master mold by a laser etching process.

14. The method of claim 11, wherein the molding the hardened layer comprises:

the plastic shell is provided with hardening liquid for coating the surface of the pointed convex structure, and the hardening layer is formed after the hardening liquid is solidified.

15. The preparation method according to claim 14, wherein the hardening liquid contains glass frit, the particle size of the glass frit is 40 μm to 80 μm, and the mass content of the glass frit in the hardening liquid is 1% o to 8% o.

16. The method of claim 11, further comprising:

the plastic casing is kept away from one side surface shaping decorative film on sclerosis layer, the decorative film includes the at least one deck in UV texture layer, coating film layer and the colour layer.

17. The method of claim 11, further comprising:

the plastic casing is kept away from one side surface printing lid bottom ink on sclerosis layer forms the lid bottom layer, the optical transmittance of lid bottom layer is less than or equal to 1%.

18. The utility model provides an electronic equipment, its characterized in that, includes the display screen, and sets up the apron and the casing subassembly of the relative both sides of display screen, the casing subassembly includes plastic casing and sclerosis layer, the surface of plastic casing has a plurality of protruding structures of point form, the sclerosis layer sets up the plastic casing has a side surface of the protruding structure of point form.