CN114683630A

CN114683630A - Shell assembly, preparation method of shell assembly and electronic equipment

Info

Publication number: CN114683630A
Application number: CN202011611005.XA
Authority: CN
Inventors: 樊泽平; 蒋正南; 董康
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2022-07-01

Abstract

The application provides a casing subassembly, which comprises a housin, and set up the first texture layer on the casing, first coating film layer and decorative film, the casing is the transparent casing of curved surface, first texture layer laminating casing sets up, first texture layer and first coating film layer set up in the same one side or relative both sides of casing, decorative film includes the substrate layer and sets up second texture layer and the second coating film layer on the substrate layer, the thickness on first coating film layer and/or second coating film layer is more than or equal to 400 nm. The shell assembly has the appearance effect of double-texture double-coating films, and the thickness of at least one layer of the two coating film layers is thicker, so that the appearance effect of the coating film layer is enhanced, the appearance effect is more obvious and strong in vision, the appearance effect of the shell assembly is improved, the whole structure of the shell assembly is stable, and the reliability is high. The application also provides a preparation method of the shell assembly and electronic equipment.

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 devices, users have higher and higher requirements on the appearance effect of the shell, and the appearance of a single tone cannot meet the requirements of the users. Therefore, the appearance of more and more cases is becoming diversified.

Disclosure of Invention

In view of this, the present application provides a housing assembly with rich appearance effect, a manufacturing method of the housing assembly, and an electronic device.

In a first aspect, the application provides a casing subassembly, including the casing, and set up first texture layer, first coating film layer and decorative film on the casing, the casing is the transparent casing of curved surface, first texture layer laminating the casing sets up, first texture layer with first coating film layer sets up with one side or relative both sides of casing, decorative film includes the substrate layer and sets up second texture layer and second coating film layer on the substrate layer, first coating film layer and/or the thickness on second coating film layer is greater than or equal to 400 nm.

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

forming a first texture layer on a shell precursor, and then bending and forming to obtain a shell with the first texture layer, wherein the shell precursor is a flat transparent shell, and the shell is in a curved surface shape;

forming a first coating layer on the shell;

forming a second texture layer and a second coating layer on the base material layer to obtain a decorative film, wherein the thickness of the first coating layer and/or the second coating layer is larger than or equal to 400 nm;

and connecting the decorative film with the shell to obtain a shell assembly.

The third aspect provides an electronic device, including the display screen and with the casing subassembly that the display screen is connected, the casing subassembly includes the casing, and sets up first texture layer, first coating film layer and decorative film on the casing, the casing is the transparent casing of curved surface, first texture layer laminating the casing sets up, first texture layer with first coating film layer sets up same one side or relative both sides of casing, decorative film includes the substrate layer and sets up second texture layer and second coating film layer on the substrate layer, first coating film layer and/or the thickness on second coating film layer is greater than or equal to 400 nm.

The application provides a shell assembly, which has the appearance effect of double-texture double-coating by arranging two texture layers and two coating layers, and at least one of the two coating layers is thicker, so that the appearance effect of the coating layer is enhanced, the visual appearance is more obvious, the appearance effect of the shell assembly is improved, and the shell assembly is stable in integral structure, high in reliability and beneficial to application; the preparation method of the shell assembly is simple, easy to operate and capable of realizing industrial production; the electronic equipment with the shell assembly has rich appearance effect, avoids homogenization phenomenon and can meet the requirements of users.

Drawings

In order to more clearly describe the technical solutions 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 view of a housing assembly according to an embodiment of the present disclosure.

Fig. 2 is a schematic cross-sectional view of a housing assembly according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a housing according to an embodiment of the present application.

FIG. 4 provides a schematic cross-sectional view of a housing assembly according to another embodiment of the present application.

FIG. 5 provides a schematic cross-sectional view of a housing assembly according to another embodiment of the present application.

FIG. 6 provides a schematic cross-sectional view of a housing assembly according to another embodiment of the present application.

FIG. 7 is a schematic cross-sectional view of a housing assembly according to another embodiment of the present application.

FIG. 8 is a cross-sectional schematic view of a housing assembly according to another embodiment of the present application.

Fig. 9 is a schematic flow chart illustrating a method for manufacturing a housing assembly according to an embodiment of the present disclosure.

Fig. 10 is a schematic flow chart illustrating a method for manufacturing a housing assembly according to another embodiment of the present disclosure.

Fig. 11 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 12 is an enlarged cross-sectional view taken along line a-a of fig. 11.

Description of reference numerals:

the display panel comprises a shell body-10, a main body part-11, an arc part-12, a first texture layer-20, a first coating layer-30, a decorative film-40, a base material layer-41, a second texture layer-42, a second coating layer-43, a connecting layer-50, a color layer-60, a protective layer-70, a shell body assembly-100 and a display screen-200.

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. 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.

Please refer to fig. 1, which is a schematic diagram of a housing assembly according to an embodiment of the present disclosure; referring to fig. 2, a cross-sectional view of a housing assembly according to an embodiment of the present disclosure is shown, in which the housing assembly 100 includes a housing 10, and a first texture layer 20, a first film coating layer 30 and a decorative film 40 disposed on the housing 10, the housing 10 is a curved transparent housing, the first texture layer 20 is disposed to be attached to the housing 10, the first texture layer 20 and the first film coating layer 30 are disposed on a same side or opposite sides of the housing 10, the decorative film 40 includes a substrate layer 41 and a second texture layer 42 and a second film coating layer 43 disposed on the substrate layer 41, and a thickness of the first film coating layer 30 and/or the second film coating layer 43 is greater than or equal to 400 nm. By arranging two texture layers and two coating layers, the shell assembly 100 has rich appearance effect; compared with a single texture layer and a single coating layer, visual fall exists between the first texture layer 20 and the second texture layer 42 and between the first coating layer 30 and the second coating layer 43, so that the shell assembly 100 has an obvious double-texture double-coating effect; meanwhile, at least one of the two coating layers is thicker, so that the appearance effect of the coating layer is enhanced, the visual appearance is more obvious, and the appearance effect of the shell assembly 100 is also improved; the shell assembly 100 has a stable overall structure, strong internal bonding force, good reliability and long service life, is not easy to crack and damage, and is beneficial to the application of the shell assembly in electronic equipment.

In the present application, the housing 10 is a curved transparent housing. By providing the curved transparent casing, the stereoscopic impression and the smooth tactile sensation of the casing assembly 100 are improved. In the present embodiment, the optical transmittance of the case 10 is greater than 90%. Specifically, the optical transmittance of the housing 10 may be, but is not limited to, greater than 92%, 93%, 94%, 95%, 96%, 97%, or the like. Wherein the optical transmittance is the transmittance of light in the wavelength range of 380nm-780 nm. By providing the housing 10 with the optical transmittance, the appearance effect of other structural layers in the housing assembly 100 can be displayed. In the present application, the material of the housing 10 may be, but is not limited to, any known transparent material that can be used for the housing 10 of the electronic device. In one embodiment of the present disclosure, the material of the housing 10 includes at least one of glass and plastic. In one embodiment, the housing 10 is a curved transparent glass housing. In another embodiment, the housing 10 is a curved transparent plastic housing. Furthermore, the curved transparent plastic shell is made of at least one of Polycarbonate (PC), polyethylene terephthalate (PET) and polymethyl methacrylate (PMMA). The shell 10 made of the materials has high mechanical performance and high transmittance, and meets the use requirement. In one embodiment, the housing 10 is a PC board. In another embodiment, the housing 10 is a PET plate. In yet another embodiment, the housing 10 is a composite board of PC board and PMMA board. In one embodiment, patterns, characters, etc. may be silk-screened on the surface of the housing 10, and specifically, trademark patterns (Logo), etc. may be silk-screened.

In the present application, the housing 10 is curved. Referring to fig. 3, a schematic structural diagram of a housing according to an embodiment of the present disclosure is shown, where the housing 10 includes a main body portion 11 and an arc portion 12, the main body portion 11 includes a first surface and a second surface that are opposite to each other, the arc portion 12 includes a third surface and a fourth surface that are opposite to each other, the first surface is connected to the third surface, the second surface is connected to the fourth surface, and the arc portion 12 is bent toward a direction close to the second surface. In this application, the inner surface of the casing 10 is the bending direction of the arc portion 12, that is, the second surface and the fourth surface are the inner surface of the casing 10, and the first surface and the third surface are the outer surface of the casing 10. In one embodiment, the included angle between the tangent plane of the first surface and the tangent plane of the third surface on the side far away from the shell 10 is more than 60 °; that is, the angle of bending α of the outer surface is greater than 60 °. Further, the bending angle α of the outer surface is greater than 90 °. Further, the outer surface has a bending angle α greater than 120 °. Specifically, the bending angle α of the outer surface is 70 °, 80 °, 90 °, 100 °, 125 °, 130 °, 135 °, or the like. Therefore, the bending degree of the arc-shaped part 12 is large, and the three-dimensional effect of the shell 10 is more obvious; meanwhile, in the case assembly 100 provided by the present application, even if the case 10 has a large bending degree, a high adhesion force can be still maintained between the other layer structures in the case assembly 100 and the case 10, the first coating layer 30 and/or the second coating layer 43 can be made thick, and the stability of the whole structure is excellent. In an embodiment, the housing 10 may be a double curved surface or a four curved surface, so as to further enhance the stereoscopic impression of the housing 10.

In the present application, the thickness of the case 10 is not particularly limited. In the present embodiment, the thickness of the case 10 is 0.1mm to 1 mm. Specifically, the thickness of the housing 10 may be, but not limited to, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, or 0.9mm, so as to meet the requirement of impact resistance, and the thickness is not too thick, which meets the requirement of being light and thin. In the present application, the housing 10 may have a uniform thickness or a non-uniform thickness, such as a gradual thickness, to achieve different appearance effects. In one embodiment, the housing 10 is a composite board of PC board and PMMA board, and the thickness of the housing 10 is 0.5 mm. In another embodiment, the housing 10 is a PET sheet and the thickness of the housing 10 is 0.65 mm.

In the present application, the first film coating layer 30 and the second film coating layer 43 make the housing assembly 100 have different gloss changes, bring different textures, and improve the appearance expressive force. In the present embodiment, the first and second coating layers 30 and 43 respectively include 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. That is, the first film 30 may be an optical film layer, a non-conductive metal layer, or a stack of the optical film layer and the non-conductive metal layer, and the second film 43 may be an optical film layer, a non-conductive metal layer, or a stack of the optical film layer and the non-conductive metal layer.

In the present application, the optical film layer is an optical medium material layer for transmitting light through the interface thereof, and can change reflection, refraction, and the like of the light passing through the optical film layer, so that the housing 10 presents a certain gloss change, such as a visual effect of presenting 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 80%.

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 includes TiO₂Layer, Ti₃O₅Layer, NbO₂Layer, Nb₂O₃Layer, Nb₂O₂Layer, Nb₂O₅Layer of Al₂O₃Layer, SiO₂Layer and ZrO₂At least two of the layers. In one embodiment, the optical film comprises Nb which are sequentially stacked₂O₅Layer, SiO₂Layer, Nb₂O₅Layer and SiO₂And (3) a layer.

In the present application, the non-conductive metal layer provides the housing 10 with a metallic luster, thereby improving the metallic texture. In the embodiments of the present application, the non-conductive metal layer is made of a metal material, which may include, but is not limited to, indium, tin, or an indium-tin alloy. In the present application, due to the low transmittance of the non-conductive metal layer, when the housing assembly 100 includes the non-conductive metal layer, only one of the first plated layer 30 and the second plated layer 43 includes the non-conductive metal layer, thereby facilitating the appearance effect of the other layer structure.

In the present application, the thickness of first coating 30 and/or second coating 43 is greater than or equal to 400 nm. On the curved surface substrate, the thickness of coating film layer is often thinner, and the outward appearance effect is not obvious, and when thickness increases, and the cohesion between the curved surface substrate is not good, drops easily and the fracture, and preparation method in this application makes can set up the coating film layer that has great thickness on the surface of curved surface form casing 10 for the gloss on coating film layer changes obviously, has still promoted the light and shadow flow outward appearance effect that appears with other layer structure superpositions simultaneously.

In one embodiment of the present application, the first coating 30 and the second coating 43 are the same effect. That is, the layer structures of the first plating layer 30 and the second plating layer 43 are identical, thereby having the same appearance effect; because the first coating 30 and the second coating 43 are different layers in the housing assembly 100, a drop exists between the first coating 30 and the second coating 43; even if the effect is the same, the gloss variation at different distances can still be seen on the appearance of the housing assembly 100, and the gloss variation effect is more diversified through the superposition of the two coating layers. In another embodiment of the present application, first coating 30 and second coating 43 are not effective. Through setting up the two-layer coating film layer of different effects for casing subassembly 100 can present abundanter outward appearance, avoids the homogenization. In one embodiment, first coating 30 and second coating 43 differ in at least one of structural composition, thickness, refractive index, and transmittance. In one embodiment, the first coating 30 is an optical film and the second coating 43 is a non-conductive metal layer, so that the housing assembly 100 has both metallic luster and different color luster at different angles, and thus has a rich visual effect.

In one embodiment of the present application, the thickness of first coating 30 and/or second coating 43 is 400nm to 700 nm. Within the thickness range, the appearance effect of light and shadow flowing of the shell assembly 100 can be obviously enhanced, meanwhile, the binding force between the first coating layer 30 and/or the second coating layer 43 and the shell 10 is excellent, and the phenomena of falling or cracking and the like can not occur after long-term use. Further, the thickness of first coating layer 30 and/or second coating layer 43 is 450nm to 700 nm. Further, the thickness of first coating 30 and/or second coating 43 is 480nm to 650 nm. Specifically, the thickness of the first plating layer 30 or the second plating layer 43 may be, but not limited to, 450nm, 460nm, 500nm, 530nm, 550nm, 580nm, 600nm, 660nm, 690nm, 700nm, and the like. In the present application, the thicknesses of the first plating layer 30 and the second plating layer 43 may be the same or different. In one embodiment, the thickness of the optical film is 350nm to 700nm, and particularly, but not limited to, 350nm, 400nm, 440nm, 450nm, 460nm, 500nm, 550nm, 600nm, 700nm, and the like. In another embodiment, the thickness of the non-conductive metal layer is 5nm-50nm, which is beneficial to preparing the non-conductive film layer. Further, the thickness of the non-conductive metal layer is 8nm-45 nm. When the thickness of the first plated layer 30 or the second plated layer 43 is greater than or equal to 400nm and includes a non-conductive metal layer, the first plated layer 30 or the second plated layer 43 must further include an optical film layer.

In the present embodiment, the adhesion of the first coating layer 30 in the housing assembly 100 is greater than or equal to 4B according to ASTM D3359. In the present application, the adhesion between the first coating layer 30 and the housing 10 is inspected by a Cross-cut test (ASTM D3359 Method B Cross-cut test) to obtain six grades, 5B (the edges of the cuts are completely smooth and no peel off), 4B (there is little peel off at the intersection of the cuts, but the Cross-cut area is affected by not more than 5%), 3B (there is peel off at the intersection of the cuts and/or along the edges of the cuts, the affected Cross-cut area is more than 5%, but not more than 15%), 2B (there is partial or total peeling off along the cut edges in large pieces, and/or partial or total peeling off at different portions of the grid, the affected Cross-cut area is more than 15%, but not more than 35%), 1B (large chips are peeled off along the cut edges, and/or some of the grid are peeled off partially or total, the cross-cut area affected was greater than 35%, but not greater than 65%), 0B (degree of exfoliation greater than 1B). Further, the adhesion force of the first coating layer 30 in the housing assembly 100 is greater than or equal to 5B. It is understood that the adhesion of the first coating 30 is the adhesion between the first coating 30 and the layer in contact with the first coating 30. In one embodiment, the first coating layer 30 is disposed on the surface of the housing 10, and the adhesion of the first coating layer 30 is the adhesion between the first coating layer 30 and the housing 10. In another embodiment, the first coating layer 30 is disposed on a side surface of the first texture layer 20 away from the housing 10, and the adhesion of the first coating layer 30 is the adhesion between the first coating layer 30 and the first texture layer 20. It is understood that the adhesion of the first coating layer 30 within the thickness range of the present application can reach the above-mentioned level. In the present application, the first coating layer 30 has excellent adhesion force, thereby preventing the first coating layer from falling off from the housing assembly 100, and ensuring the stability and reliability of the entire structure.

In the present embodiment, the adhesion between the second coating layer 43 and the case 10 is greater than or equal to 4B according to ASTM D3359. Further, the adhesion force of the second coating layer 43 in the housing assembly 100 is greater than or equal to 5B. It will be appreciated that the adhesion of second coating 43 is the adhesion between second coating 43 and the layer in contact with second coating 43. In an embodiment, the second plated layer 43 is disposed on the surface of the substrate layer 41, and the adhesion of the second plated layer 43 is the adhesion between the second plated layer 43 and the substrate layer 41. In another embodiment, the second plated film layer 43 is disposed on a side surface of the second texture layer 42 away from the substrate layer 41, and the adhesion force of the second plated film layer 43 is the adhesion force between the second plated film layer 43 and the second texture layer 42. It is understood that the adhesion of the second coating layer 43 within the thickness range of the present application can reach the above-mentioned level. In the present application, the second coating layer 43 has excellent adhesion, thereby preventing the second coating layer from falling off from the housing assembly 100, and ensuring the stability and reliability of the entire structure.

In the present application, the first texture layer 20 is disposed adjacent to the housing 10. That is, the first texture layer 20 is disposed on the housing 10 and is in direct contact with the housing 10. The first textured layer 20 may cause the housing assembly 100 to present a textured visual effect. In the present embodiment, the first texture layer 20 is a transparent texture layer. In one embodiment, the optical transmittance of the first texture layer 20 is greater than 90%. In the present embodiment, the first texture layer 20 has a thickness of 5 μm to 12 μm. Further, the first texture layer 20 has a thickness of 5 μm to 10 μm. Further, the first texture layer 20 has a thickness of 5 μm to 7.5 μm. Specifically, the thickness of the first texture layer 20 may be, but not limited to, 5 μm, 5.5 μm, 6 μm, 6.5 μm, 7 μm, 8 μm, 10 μm, 11 μm, or 12 μm, and within this thickness range, a good texture effect may be formed, and an excessively large thickness may cause a poor impact resistance effect of the first texture layer 20 and may easily crack, and an excessively small thickness may cause an insignificant formed texture and a difficult control of a manufacturing process. In the present embodiment, the first texture layer 20 completely covers the surface of the housing 10. So that the entire surface of the housing 10 has the texturing effect of the first texturing layer 20.

In the present application, the second textured layer 42 may cause the shell assembly 100 to present a textured visual effect. In the present embodiment, the second texture layer 42 is a transparent texture layer. In one embodiment, the optical transmittance of the second texture layer 42 is greater than 90%. In the present embodiment, the second texture layer 42 has a thickness of 5 μm to 12 μm. Further, the second texture layer 42 has a thickness of 7 μm to 12 μm. Further, the second texture layer 42 has a thickness of 8 μm to 12 μm. Specifically, the thickness of the second texture layer 42 may be, but not limited to, 5 μm, 7 μm, 8 μm, 8.5 μm, 9 μm, 9.5 μm, 10 μm, 11 μm, or 12 μm, and within this thickness range, a good texture effect may be formed, and an excessively large thickness may cause a poor impact resistance effect of the second texture layer 42 and may easily crack, and an excessively small thickness may cause an insignificant formed texture and a difficult control of the manufacturing process. In the present embodiment, the second texture layer 42 completely covers the surface of the housing 10. Such that the entire surface of the housing 10 has the texturing effect of the second texturing layer 42.

In one embodiment of the present application, the texture of the first texture layer 20 and the texture of the second texture layer 42 are the same. Because the first texture layer 20 and the second texture layer 42 are located at different layers on the housing assembly 100, a difference exists visually, even if the textures are the same, the housing assembly 100 has two distinct texture layers, and the two texture layers can be superposed to enhance the appearance effect of the housing assembly 100. In another embodiment of the present application, the texture of the first texture layer 20 and the texture of the second texture layer 42 are different. Further improving the appearance of the housing assembly 100. In one embodiment, the texture features of first texture layer 20 and second texture layer 42 differ in at least one of shape, height, length, width, spacing, and arrangement. Specifically, the texture structures of the first texture layer 20 and the second texture layer 42 are respectively selected from at least one of micro-lenses, linear cylindrical lenses, curved cylindrical lenses, small short lines, fresnel lenses and CD patterns. Thereby improving the appearance of the housing assembly 100.

In the present application, the decoration film 40 includes a substrate layer 41, and a second texture layer 42 and a second coating layer 43 disposed on the substrate layer 41. The substrate layer 41 serves as a substrate for the second texture layer 42 and the second coating layer 43, so as to form the second texture layer 42 and the second coating layer 43, and connect the decorative film 40 with the housing 10. In the embodiment of the present application, substrate layer 41 is the plastic layer to promoted substrate layer 41's flexibility, be favorable to setting up on the casing 10 surface of curved surface form. Specifically, the substrate layer 41 may include, but is not limited to, at least one of a PC layer and a PET layer. In the embodiment of the present application, the thickness of the base material layer 41 is 40 μm to 60 μm. Can function as a carrier for the second textured layer 42 and the second coating 43 without increasing the thickness of the housing assembly 100 too much. Further, the thickness of the base material layer 41 is 45 μm to 55 μm. Specifically, the thickness of the base material layer 41 may be specifically, but not limited to, 40 μm, 42 μm, 45 μm, 50 μm, 55 μm, 57 μm, or 60 μm. In the present embodiment, the flexibility of the decoration film 40 is examined according to the cylindrical axis bending test, and the diameter of the axis causing the breakage of the decoration film 40 is 50mm or less. It can be seen that the decorative film 40 has high bending strength, and the layers still have good bonding force in a bending state, and have certain bending resistance. In one embodiment, the decoration film 40 has a complete structure without cracks and falling off when the shaft diameter is 65 mm.

In the present application, the case assembly 100 further includes a connection layer 50, and the connection layer 50 is disposed between the decoration film 40 and the case 10. The connecting layer 50 is used to connect the decoration film 40 to the housing 10, and the material of the connecting layer 50 may be any known material that can be used for adhesion and fixation. In the embodiment of the present application, the material of the connection layer 50 includes at least one of optical clear adhesive (OCA adhesive), hot melt adhesive, and UV curable adhesive. Further, the connection layer 50 is an OCA glue layer. The decoration film 40 can be directly bonded and fixed on the shell 10 by adopting the OCA glue, and the operation is convenient without heating or ultraviolet irradiation curing. In the embodiment of the present application, the optical transmittance of the connection layer 50 is greater than 90%, so that the connection layer 50 does not affect the appearance of the other layer structures in the housing assembly 100. In the present application, the thickness of the connection layer 50 may be selected as desired. In one embodiment, the thickness of the connection layer 50 is not greater than 25 μm so as to stably dispose the decoration film 40 on the housing 10 without excessively increasing the thickness of the housing assembly 100. Specifically, the thickness of the connection layer 50 may be, but not limited to, 5 μm to 25 μm, 10 μm to 22 μm, or 15 μm to 20 μm, etc.

In the embodiment of the present application, the housing assembly 100 further includes a color layer 60, and the color layer 60 is disposed on the housing 10. The color layer 60 colors the housing assembly 100 to provide the housing assembly 100 with a rich color appearance. Specifically, the thickness of the color layer 60 is not particularly limited, for example, the thickness of the color layer 60 may be 5 μm to 30 μm, and specifically may be, but is not limited to, 8 μm, 10 μm, 12 μm, 15 μm, 17 μm, 20 μm, 25 μm, 26 μm, 29 μm, and the like. When the thickness of the color layer 60 is within the above range, the housing assembly 100 may have a good color effect. In the present application, the color layer 60 may have a single-layer structure or a multi-layer structure, and the colors of the multiple layers may be the same or different. In one embodiment of the present application, the color layer 60 is a clear layer. That is, the color layer 60 is not disposed to affect the appearance of other layer structures in the housing assembly 100. In another embodiment of the present application, the color layer 60 is a solid color layer. That is, the color layer 60 is opaque, so that the effects of the two texture layers and the two coating layers can be set off, and the effects of the two texture layers and the two coating layers can be more obvious. In one embodiment, the optical transmittance of the color layer 60 is less than 1%. At this time, the color layer 60 may function as a cover substrate to block one side light of the housing assembly 100. Further, the color layer 60 is a black ink layer.

In the present embodiment, the housing assembly 100 further includes a protective layer 70, and the protective layer 70 is disposed on the housing 10. The protective layer 70 protects the layer structure in the housing assembly 100. In one embodiment of the present application, the protective layer 70 includes at least one of a hardened layer and an anti-fingerprint layer. The material of the hardened layer may be, but is not limited to, an ultraviolet light curing adhesive. In one embodiment, the ultraviolet curing adhesive is sprayed and coated, and a hardened layer is formed after curing. Optionally, the material of the hardened layer includes at least one of urethane acrylate, silicone resin, and perfluoropolyether acrylate. Optionally, the surface hardness of the hardened layer is 3H-6H, thereby improving the mechanical performance of the housing assembly 100. The anti-fingerprint layer has the functions of preventing dirt and fingerprint adhesion. Optionally, the material of the anti-fingerprint layer comprises a fluorine-containing anti-fingerprint agent. Specifically, the material of the anti-fingerprint layer may be, but not limited to, perfluoropolyethers, polytetrafluoroethylene, fluoroalkyl ether-siloxane, magnesium aluminum fluoride, and the like. In particular, the contact angle of the surface of the anti-fingerprint layer can be, but is not limited to be, larger than 105 degrees, which is beneficial to improving the capability of anti-fingerprint and pollutant attaching to the surface. In another embodiment of the present application, the thickness of the protective layer 70 may be 5 μm to 10 μm, and specifically may be, but is not limited to, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, 10 μm, and the like. In yet another embodiment of the present application, the protection layer 70 is a transparent layer. Further, the optical transmittance of the protective layer 70 is greater than 90%. Thereby avoiding obscuring the appearance of other layer structures in the housing assembly 100. In one embodiment, the protective layer 70 is disposed on the outermost layer of the housing assembly 100. That is, the outer surface of the protective layer 70 is the outer surface of the housing assembly 100, so that the entire housing assembly 100 can be protected.

In one embodiment of the present application, referring to fig. 2, the first texture layer 20 and the first coating layer 30 are disposed on the same side of the housing 10. That is, the first texture layer 20 and the first coating layer 30 are sequentially disposed on the surface of the case 10. Further, the first texture layer 20 and the first coating layer 30 are disposed on the inner surface of the housing 10. So that the first coating layer 30 acts as a susceptor against the texture of the first texture layer 20, and the texture of the first texture layer 20 is more apparent. In one embodiment, the decoration film 40 is attached to a surface of the first coating layer 30 away from the housing 10. In another embodiment, the decoration film 40 is attached to a surface of the casing 10 away from the first coating layer 30.

Referring to fig. 4, a cross-sectional view of a housing assembly is provided for another embodiment of the present application, which is substantially the same as fig. 2 except that the first texture layer 20 and the first coating layer 30 are disposed on opposite sides of the housing 10. In one embodiment, the decoration film 40 is disposed on a side surface of the first texture layer 20 away from the housing 10. In another embodiment, the decoration film 40 is attached to a side surface of the first coating layer 30 away from the housing 10.

In one embodiment of the present application, referring to fig. 2, the second texture layer 42 and the second coating layer 43 are disposed on the same side of the substrate layer 41. In one embodiment, the decoration film 40 includes a substrate layer 41, a second texture layer 42, and a second coating layer 43 sequentially stacked. In another embodiment, the decorative film 40 includes a substrate layer 41, a second coating layer 43, and a second texture layer 42, which are sequentially stacked.

Referring to fig. 5, a cross-sectional view of a housing assembly according to another embodiment of the present application is provided, which is substantially the same as fig. 2 except that a second texture layer 42 and a second coating layer 43 are disposed on opposite sides of a substrate layer 41. In one embodiment, the decoration film 40 includes a second texture layer 42, a substrate layer 41 and a second coating layer 43 sequentially stacked. In another embodiment, the decoration film 40 includes a second texture layer 42, a substrate layer 41, and a second coating layer 43 sequentially stacked.

In the present application, the housing 10 includes an inner surface and an outer surface opposite to each other, and the first texture layer 20, the first coating layer 30 and the decoration film 40 may be disposed on the inner surface or the outer surface. In one embodiment of the present application, the first texture layer 20, the first coating layer 30 and the decorative film 40 are disposed on the inner surface of the housing 10. Therefore, the casing 10 can be decorated, and the casing 10 can protect other layer structures, so as to prolong the durability of the appearance effect of the casing assembly 100. In another embodiment of the present application, the orthographic projection of the first texture layer 20, the first coating layer 30 and the decoration film 40 on the shell 10 completely covers the surface of the shell 10. Thereby providing a rich visual effect to the entire housing 10. In one embodiment, referring to fig. 2, the first texture layer 20, the first coating layer 30 and the decoration film 40 are stacked on the inner surface of the housing 10; at this time, the first texture layer 20 is closer to the outer surface than the first coating layer 30, and the second texture layer 42 is closer to the outer surface than the second coating layer 43, so that the first coating layer 30 can play a supporting role for the texture effect of the first texture layer 20, and the texture effect of the first texture layer 20 is more obvious, and similarly, the second coating layer 43 plays a supporting role for the texture effect of the second texture layer 42, and the texture effect of the second texture layer 42 is more obvious; the overlapping makes the appearance of the housing assembly 100 appear as a clear double-grain and highly-dazzling gloss variation. Further, the first film 30 is an optical film, and the second film 43 includes at least one of an optical film and a non-conductive metal layer, so that the appearance effect of each layer structure is shown.

In the present embodiment, the housing assembly 100 further includes a connection layer 50. Referring to fig. 6, a schematic cross-sectional view of a housing assembly according to another embodiment of the present application is provided, which is substantially the same as fig. 2, except that the housing assembly 100 further includes a connection layer 50, and the connection layer 50 is disposed between the decoration film 40 and the housing 10.

In the present embodiment, the housing assembly 100 further includes a color layer 60. Referring to fig. 7, a cross-sectional view of a housing assembly according to another embodiment of the present application is provided, which is substantially the same as fig. 2, except that the housing assembly 100 further includes a color layer 60. In one embodiment, the color layer 60 is disposed on the inner surface of the housing 10 and is disposed on one side of the decoration film 40, the first texture layer 20 and the first coating layer 30. Thereby make the color on color layer 60 can set off the effect on two-layer texture layer and two-layer coating film layer for texture effect and gloss change are more obvious clear, make casing subassembly 100 have the color effect simultaneously. Further, the optical transmittance of the color layer 60 is less than 1%. The color layer 60 can block light from passing through, which is beneficial to shielding electronic components inside the electronic device when the housing assembly 100 is applied in the electronic device, and thus appearance effect is ensured; the color layer 60 is now disposed on the innermost side of the housing assembly 100.

In the present embodiment, the housing assembly 100 further includes a protective layer 70. Referring to fig. 8, a schematic cross-sectional view of a housing assembly according to another embodiment of the present application is provided, which is substantially the same as fig. 2 except that the housing assembly 100 further includes a protective layer 70. In one embodiment, the first texture layer 20, the first coating layer 30 and the decoration film 40 are stacked on the inner surface of the housing 10, and the protection layer 70 is disposed on the surface of the housing 10 away from the first texture layer 20. Therefore, the shell 10 and other layer structures can be protected, the appearance effect of the shell is ensured, the performance of the shell assembly 100 is improved, and the service life is prolonged.

The application provides a casing subassembly 100 has the outward appearance effect of two coating films of double texture, and coating film layer thickness wherein is great simultaneously for its gloss changes intensity and improves, thereby can make casing subassembly 100's outward appearance effect clear showing, has promoted the expressive force of product.

The present application also provides a method of making a housing assembly, which method of making the housing assembly 100 of any of the embodiments described above. Referring to fig. 9, a schematic flow chart of a method for manufacturing a housing assembly according to an embodiment of the present disclosure includes:

operation 101: and forming a first texture layer on the shell precursor, and then bending and forming to obtain the shell with the first texture layer, wherein the shell precursor is a flat transparent shell, and the shell is in a curved surface shape.

In operation 101, the shell precursor thickness may be 0.1mm to 1mm to meet application needs.

In the present embodiment, the first layer may be formed on the case precursor by, but not limited to, UV transfer printingA textured layer 20. Optionally, the UV transfer printing is performed by a high scratch resistant UV transfer printing adhesive, a high hardness UV transfer printing adhesive, a high elasticity UV transfer printing adhesive or a general UV transfer printing adhesive. Specifically, the material of the UV transfer paste includes acrylic resin and the like. In one embodiment, the first texture layer 20 is formed by applying a UV transfer glue and curing the UV transfer glue. Optionally, the transfer thickness is 8 μm to 12 μm; the transfer printing thickness is too thin, the adhesion force of the first texture layer 20 on the shell 10 is poor, the first texture layer is easy to fall off, the transfer printing thickness is too large, and the first texture is easy to crack; the first texture layer 20 within the above range can ensure firm adhesion of the first texture layer 20 to the case precursor, improving structural reliability of the first texture layer 20. Optionally, curing comprises curing at a curing energy of 800mJ/cm²-2500mJ/cm²The first curing is carried out at a curing energy of 450mJ/cm²-1000mJ/cm²Then, the second curing is performed. Specifically, the first curing energy may be, but is not limited to, 800mJ/cm²、1000mJ/cm²、1500mJ/cm²、1800mJ/cm²、2000mJ/cm²Or 2400mJ/cm²Etc., the second curing energy may be, but is not limited to, 500mJ/cm²、550mJ/cm²、600mJ/cm²、700mJ/cm²、800mJ/cm²Or 900mJ/cm²And the like. In one embodiment, the transfer is performed by a UV transfer machine, and the post-transfer first curing energy is 1400mJ/cm²The second curing energy was 500mJ/cm². In another embodiment, the first curing may be performed using an LED lamp and the second curing may be performed using a mercury lamp.

In the present embodiment, before forming the first texture layer 20, silk-screening patterns, characters, etc. on the surface of the shell precursor is also included. Specifically, but not limited to, silk screen trademark pattern (Logo) and the like. In one embodiment, the trademark pattern is formed by silk-screening ink on the surface of the shell precursor and curing the ink. Further, the shell precursor is pretreated before silk-screen printing to remove impurities such as stains and dust. In the present application, the ink may be, but is not limited to, a specular silver ink. Optionally, the screen printing plate of the silk screen is 300-450 meshes, the thickness of the silk screen is 1-5 μm, and the silk screen is baked at 50-80 ℃ for 20-80 min after silk screen printing. Furthermore, the thickness of the silk screen is 1-4 μm, and the silk screen is baked for 45-80 min at 60-80 ℃.

In the present embodiment, the bending molding may include, but is not limited to, high pressure molding. In one embodiment, the case precursor is a flat plate, and the case 10 having a curved surface is obtained by high-pressure molding. The high pressure molding refers to a process of softening the shell precursor at a high temperature (a specific temperature value may be selected according to material characteristics of the shell precursor), and then applying high pressure to mold the shell precursor. Further, the process parameters of the high-pressure forming comprise: the temperature of the forming die is 120-135 ℃, the forming pressure is 25kg-35kg, the temperature of the heating plate is 350-380 ℃, the heating time is 25s-35s, the pressure maintaining pressure is 25kg-35kg, and the pressure maintaining time is 3s-8 s. Furthermore, the process parameters of the high-pressure forming include: the temperature of the forming die is 125-128 ℃, the forming pressure is 28kg-32kg, the temperature of the heating plate is 365-375 ℃, the heating time is 31s-33s, the pressure maintaining pressure is 28kg-32kg, and the pressure maintaining time is 4s-5 s. Specifically, the shell precursor may be, but not limited to, high-pressure molded by a high-pressure molding machine.

Operation 102: and forming a first coating layer on the shell.

In the present application, since the case precursor is already subjected to bending molding into the curved-surface-shaped case 10, when the first plated layer 30 is formed on the case 10, the first plated layer 30 can be formed to a thicker thickness, for example, the first plated layer 30 having a thickness of not less than 400 nm; compare with the first coating film layer 30 of shaping earlier hot bending again and compare, the cohesion of first coating film layer 30 and casing 10 is strong in this application, is difficult for taking place the fracture and drop, guarantees the reliability of structure, can increase the thickness on first coating film layer 30 simultaneously, improves the significance of outward appearance effect.

In the present embodiment, the first coating layer 30 and the like may be formed by, but not limited to, a physical vapor deposition method. In one embodiment, the first coating layer 30 is formed on the surface of the housing 10 by a vacuum coater. Further, the vacuum pressure is 2.5Torr-3.5Torr, the ion source voltage is 100V-115V, the ion source current is 8A-10A, the ion source processing time is 3min-6min, and the temperature of the shell 10 is 20 ℃ to 30 ℃. In one embodiment, the vacuum pressure is 3Torr, the ion source voltage is 110V, the ion source current is 9A, the ion source processing time is 5min, and the housing 10 temperature is 25 ℃.

Operation 103: and forming a second texture layer and a second coating layer on the substrate layer to obtain the decorative film, wherein the thickness of the first coating layer and/or the second coating layer is larger than or equal to 400 nm.

In operation 103, the substrate layer 41 may include, but is not limited to, at least one of a PC layer and a PET layer. In the embodiment of the present application, the thickness of the base material layer 41 is 40 μm to 60 μm. Can function as a carrier for the second textured layer 42 and the second coating 43 without increasing the thickness of the housing assembly 100 too much. In the present application, the base material layer 41 when the decorative film 40 is prepared is in a flat plate shape; after subsequent reattachment to the case 10, each of the layers of the decorative film 40 is bent to be disposed on the case 10.

In the present embodiment, the thickness of the first plating layer 30 is smaller than the thickness of the second plating layer 43. By forming the second coating layer 43 on the base material layer 41, the stable and firm connection between the second coating layer 43 and the base material layer 41 is ensured, and the adhesive force between the second coating layer 43 and the shell 10 is improved; meanwhile, since the housing 10 is curved, the first coating layer 30 is directly formed on the housing 10, and the thickness uniformity of the first coating layer 30 is not good. Consequently, adopt shaping second coating film layer 43 on substrate layer 41, can make the second coating film layer 43 that thickness is thicker, the thickness homogeneity is good, and outward appearance effect homogeneity is high, promotes housing assembly 100's outward appearance effect, and housing assembly 100's overall structure stability is good simultaneously. In one embodiment, the thickness of first coating 30 is less than 600nm and the thickness of second coating 43 is 600nm-700 nm.

In the present embodiment, the thickness of the first texture layer 20 is less than the thickness of the second texture layer 42. By forming the second texture layer 42 on the base material layer 41, the stable and firm connection between the second texture layer 42 and the base material layer 41 is ensured, and the adhesive force between the second texture layer 42 and the shell 10 is improved; meanwhile, since the first texture layer 20 needs to be bent and formed after being formed, in order to avoid affecting the structure of the first texture layer 20, the thickness of the first texture layer 20 can be reduced, and correspondingly, the thickness of the second texture layer 42 is increased, so that the overall appearance effect is ensured.

In the present embodiment, the second texture layer 42 may be formed on the case 10 by, but not limited to, UV transfer. In one embodiment, the UV transfer glue is applied and cured to form the second texture layer 42. Optionally, the transfer thickness is 7 μm to 11 μm; the transfer thickness is too thin, the adhesion force of the second texture layer 42 on the shell 10 is poor, the second texture layer is easy to fall off, the transfer thickness is too large, and the second texture is easy to crack; the second texture layer 42 within the above range can ensure firm adhesion of the first texture layer 20 to the base material layer 41, improving structural reliability of the second texture layer 42. Optionally, the curing comprises curing at a curing energy of 800mJ/cm²-2500mJ/cm²The first curing is carried out at a curing energy of 450mJ/cm²-1000mJ/cm²Then, the second curing is performed. Further, the first curing energy was 1800mJ/cm²-2200mJ/cm²The second curing energy was 700mJ/cm²-900mJ/cm². Specifically, the first curing energy may be, but is not limited to, 1000mJ/cm²、1500mJ/cm²、2000mJ/cm²、2100mJ/cm²、2200mJ/cm²Or 2400mJ/cm²Etc., the second curing energy may be, but is not limited to, 500mJ/cm²、550mJ/cm²、600mJ/cm²、700mJ/cm²、800mJ/cm²Or 900mJ/cm²And so on. In one embodiment, the first cure energy is 2000mJ/cm²The second curing energy was 800mJ/cm². In another embodiment, the first curing may be performed using an LED lamp and the second curing may be performed using a mercury lamp.

In the present embodiment, the second plating layer 43 and the like may be formed by, but not limited to, physical vapor deposition. In one embodiment, the second coating layer 43 is formed on the substrate layer 41 by a vacuum coater. Further, the vacuum pressure is 2.5Torr-3.5Torr, the ion source voltage is 100V-115V, the ion source current is 8A-10A, the ion source processing time is 3min-6min, and the temperature of the shell 10 is 20 ℃ to 30 ℃. In one embodiment, the vacuum pressure is 3Torr, the ion source voltage is 110V, the ion source current is 9A, the ion source processing time is 5min, and the housing 10 temperature is 25 ℃. In another embodiment, the thickness of second coating 43 is greater than the thickness of first coating 30. Because first coating film layer 30 directly moulds on curved surface's casing 10, the homogeneity technology of control thickness is complicated, and second coating film layer 43 directly moulds on substrate layer 41, and thickness uniformity is easy to control, the degree of difficulty is little, consequently this setting can enough guarantee casing assembly 100's outward appearance effect expressive force reinforcing, has also guaranteed visual effect's uniformity degree simultaneously.

Operation 104: and connecting the decorative film with the shell to obtain the shell assembly.

In operation 104, the decoration film 40 and the housing 10 are placed in a vacuum laminator to improve the bonding strength. 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. Furthermore, defoaming is needed after the lamination, and the defoaming comprises the step of treating for 30-60 min at 45-25 ℃ under 1.6-1.8 MPa.

In the present embodiment, a molded connection layer 50 is also included. In one embodiment, the material of the connection layer 50 includes at least one of OCA glue, hot melt glue and UV curing glue. In one embodiment, the connection layer 50 is an OCA glue layer. The decoration film 40 can be directly bonded and fixed on the shell 10 by adopting the OCA glue, and the operation is convenient without heating or ultraviolet irradiation curing.

In the present embodiment, a molding color layer 60 is further included. In one embodiment, the color layer 60 may be formed by screen printing or inkjet printing of an ink having a predetermined color, such as a UV curable ink. The color layer 60 may have a single-layer structure or a multi-layer structure, and the colors of the inks forming the different layers may be the same or different. Specifically, the ink color may be, but is not limited to, yellow, red, blue, green, white, black, and the like. In another embodiment, the color layer 60 is formed after baking at 60 ℃ to 90 ℃ for 30min to 60min after the color ink is applied.

In an embodiment of the present application, the optical transmittance of the color layer 60 is less than 1%. At this time, the color layer 60 is a cap underlayer. In one embodiment, the first ink, the second ink, the third ink, the fourth ink and the fifth ink are sequentially screen-printed or sprayed to form the cap and base layer. The first ink, the second ink, the third ink, the fourth ink and the fifth ink may be the same in color or different in color. In one embodiment, the first ink, the second ink, the third ink, the fourth ink, and the fifth ink are black. Further, the first printing ink comprises first main body resin, a first curing agent, a first diluent and a first adhesive, the first main body resin, the first curing agent, the first diluent and the first adhesive are uniformly mixed in advance according to a certain proportion before use, and the mixture is baked for a period of time at a certain temperature after silk-screen printing or spraying. Specifically, the mass ratio of the first host resin, the first curing agent, the first diluent and the first adhesion agent can be, but is not limited to, 100:6 (10-15: 3; the mesh number of the screen printing plate for silk screen printing is 300 meshes, and the screen stretching angle is 45 degrees; the thickness of the silk screen is 7-10 μm, 7.5-9.5 μm or 8-9 μm, etc.; after silk-screen printing, the silk-screen printing is processed for 3min to 5min at the surface drying temperature of 70 ℃ in a tunnel oven, and then is baked for 15min in a vertical oven at the temperature of 70 ℃. Further, the second printing ink comprises second main body resin, a second curing agent, a second diluent and a second adhesive, the second main body resin, the second curing agent, the second diluent and the second adhesive are uniformly mixed in advance according to a certain proportion before use, and the mixture is baked for a period of time at a certain temperature after silk-screen printing or spraying. Specifically, the mass ratio of the second host resin, the second curing agent, the second diluent and the second adhesion agent can be, but is not limited to, 100:8 (10-15: 3; the mesh number of the screen printing plates for silk screen printing is 250 meshes, and the screen stretching angle is 22.5 degrees; the silk-screen thickness is 15-19 μm, 16-18.5 μm or 17-18 μm; after silk-screen printing, the silk-screen printing is processed for 3min to 5min in a tunnel oven with the surface drying temperature of 70 ℃, and then is baked for 15min in a vertical oven with the temperature of 70 ℃. Further, the third ink comprises a third main body resin, a third curing agent, a third diluent and a third adhesion agent, which are uniformly mixed in advance according to a certain proportion before use, and are baked for a period of time at a certain temperature after silk-screen printing or spraying. Specifically, the mass ratio of the third main body resin, the third curing agent, the third diluent and the third adhesion agent can be, but is not limited to, 100:8 (10-15: 3; the mesh number of the screen printing plates for silk screen printing is 250 meshes, and the screen stretching angle is 22.5 degrees; the silk-screen thickness is 23-27 μm, 24-26.5 μm or 25-26 μm; after silk-screen printing, the silk-screen printing is processed for 3min to 5min at the surface drying temperature of 70 ℃ in a tunnel oven, and then is baked for 15min in a vertical oven at the temperature of 70 ℃. Further, the fourth ink comprises a fourth main body resin, a fourth curing agent, a fourth diluent and a fourth bonding agent, which are uniformly mixed in advance according to a certain proportion before use, and are baked for a period of time at a certain temperature after silk-screen printing or spraying. Specifically, the mass ratio of the fourth main body resin, the fourth curing agent, the fourth diluent and the fourth adhesion agent can be, but is not limited to, 100:8 (10-15: 3; the mesh number of the screen printing plates for silk screen printing is 250 meshes, and the screen stretching angle is 22.5 degrees; the silk-screen thickness is 30-36 μm, 31-35 μm or 32-34 μm; after silk-screen printing, the silk-screen printing is processed for 3min to 5min in a tunnel oven with the surface drying temperature of 70 ℃, and then is baked for 15min in a vertical oven with the temperature of 70 ℃. Further, the fifth ink comprises a fifth main body resin, a fifth curing agent, a fifth diluent and a fifth bonding agent, which are uniformly mixed in advance according to a certain proportion before use, and are baked for a period of time at a certain temperature after silk-screen printing or spraying. Specifically, the mass ratio of the fifth main body resin, the fifth curing agent, the fifth diluent and the fifth bonding agent can be, but is not limited to, 100:8 (10-15: 3); the mesh number of the screen printing plates for silk screen printing is 250 meshes, and the screen stretching angle is 22.5 degrees; the silk-screen thickness is 30-36 μm, 31-35 μm or 32-34 μm; after silk-screen printing, the silk-screen printing is processed for 3min to 5min at the surface drying temperature of 70 ℃ in a tunnel oven, and then is baked for 90min in a vertical oven at the temperature of 70 ℃. The fifth printing ink silk screen printing thickness is thicker to guarantee that fashioned lid bottom can play impervious effect. Treating in tunnel oven at surface drying temperature of 70 deg.C for 3min-5min, and baking in vertical oven at 70 deg.C for 15 min.

In the present embodiment, a shaped protective layer 70 is further included, and the protective layer 70 includes at least one of a hardened layer and an anti-fingerprint layer. In one embodiment, the hardened layer is obtained by curtain coating the hardening liquid, then baking for 3min-10min at 60 ℃ -80 ℃, and then irradiating by ultraviolet light for curing. Further, the hardening liquid comprises a main body resin and a diluent, the linear speed is 28hz-32hz, and the curing energy is 400mJ/cm²-500mJ/cm². Specifically, the host resin may be, but is not limited to, urethane acrylate, and the mass ratio of the host resin to the diluent may be, but is not limited to, 10: 4, the thickness of the hardening liquid is 6-10 μm and 6.5-9 μmMu m or 7 to 8.5 mu m. In another embodiment, the anti-fingerprint layer is cured by applying an anti-fingerprint agent. In particular, the contact angle of the surface of the anti-fingerprint layer can be, but is not limited to be, larger than 105 degrees, which is beneficial to improving the capability of anti-fingerprint and pollutant attaching to the surface.

In the embodiment of the application, the method further comprises the step of performing computer numerical control precision machining (CNC machining). The CNC machining can mill away excess leftover material, and machine the shape and the required through holes, etc., to obtain the final desired appearance of the housing assembly 100. In one embodiment, a fine engraving machine is used to ensure the precision of the dimensions, and the machining precision is within ± 8 μ M, so as to obtain a better housing assembly 100. In another embodiment, the CNC engraving and milling machine processing parameters are: the rotating speed is 45000-55000 r/min, the feeding speed of rough milling is 2000-4000 mm/min, and the feeding speed of finish milling is 2000-4000 mm/min; the process improves the product yield and ensures the processing efficiency. Furthermore, a cutter can be selected according to the required product shape and hole site, for example, a combined cutter with the service life of 1800pcs-2000pcs and a chamfering cutter with the service life of 5500pcs-6000pcs can be selected, and the service life is prolonged.

In the application, after the shell precursor is bent and formed, the first coating layer 30 is arranged, at this time, the shell 10 is deformed, the thickness of the formed first coating layer 30 is not limited, and the phenomena of excessive thickness falling and cracking are avoided; meanwhile, the second texture layer 42 and the second coating layer 43 are arranged on the base layer, so that the second texture layer 42 and the second coating layer 43 are easier to form and can be more easily prevented from cracking and falling, and the shell assembly 100 with excellent internal binding force and stable integral structure is obtained.

Referring to fig. 10, 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 shell precursor, forming a first texture layer on the shell precursor, and then bending and forming to obtain the shell with the first texture layer.

Operation 202: and forming a first coating layer on the surface of one side of the first texture layer, which is far away from the shell.

In operation 203: and providing a substrate layer, and sequentially forming a second texture layer and a second coating layer on the substrate layer to obtain the decorative film.

Operation 204: and arranging the decorative film on the surface of one side of the first film coating layer, which is far away from the shell, so as to obtain the shell component.

By adopting the preparation method, the shell assembly 100 can be obtained, and the shell assembly 100 comprises the shell 10, the first texture layer 20, the first coating layer 30, the base material layer 41, the second texture layer 42 and the second coating layer 43 which are sequentially stacked. In one embodiment of the present application, a connection layer 50 is formed between the decoration film 40 and the housing 10. In another embodiment of the present application, a shaping color layer 60 is further included. In one embodiment, the color layer 60 is formed on the surface of the second plating layer 43 away from the substrate layer 41. In another embodiment of the present application, a shaped protective layer 70 is also included. In one embodiment, a protective layer 70 is formed on the surface of the housing 10 remote from the first textured layer 20. Specifically, the protective layer 70 may be molded before the decoration film 40 is disposed on the surface of the case 10.

It is understood that, in the above preparation method provided in the present application, the order of the operation steps is not limited.

In an embodiment of the present application, the housing assembly 100 prepared as described above has good stability and reliability of the overall structure, and an excellent appearance effect. In a comparative example, after the first texture layer 20 and the first coating layer 30 are directly formed on the flat-plate-shaped shell precursor, bending forming is performed; the first plated film layer 30 after molding is cracked and partially peeled off, and the second texture layer 42 and the second plated film layer 43 cannot be produced.

The present application also provides a schematic view of an electronic device, which includes the housing assembly 100 of any 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. Fig. 11 is a schematic view of an electronic device according to an embodiment of the present application, where the electronic device includes the housing assembly 100 in any of the above embodiments. Referring to fig. 12, which is an enlarged cross-sectional view taken along line a-a of fig. 11, the electronic device includes a display panel 200 and a housing assembly 100 connected to the display panel 200. The electronic equipment has the obvious visual effect of double-texture double-coating films, is strong in appearance expressive force and obvious in visual effect, and can meet the use requirements.

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 body subassembly, its characterized in that includes the casing, and sets up first texture layer, first coating film layer and decorative film on the casing, the casing is the transparent casing of curved surface, first texture layer laminating the casing sets up, first texture layer with first coating film layer sets up with one side or relative both sides of casing, decorative film includes the substrate layer and sets up second texture layer and second coating film layer on the substrate layer, first coating film layer and/or the thickness on second coating film layer is more than or equal to 400 nm.

2. The housing assembly of claim 1 wherein the first coating has a thickness of 450nm to 700nm and the second coating has a thickness of 450nm to 700 nm.

3. The housing assembly of claim 1 wherein the first coating has a thickness less than the thickness of the second coating.

4. The housing assembly of claim 1 wherein the first coating layer has an adhesion of 4B or greater and the second coating layer has an adhesion of 4B or greater in the housing assembly according to ASTM D3359.

5. The housing assembly of claim 1 wherein the first coating layer comprises at least one of an optical film layer and a non-conductive metal layer and the second coating layer comprises at least one of an optical film layer and a non-conductive metal layer.

6. The housing assembly of claim 1, wherein the housing comprises a main portion and an arcuate portion, the main portion comprises first and second oppositely disposed surfaces, the arcuate portion comprises third and fourth oppositely disposed surfaces, the first surface is connected to the third surface, the second surface is connected to the fourth surface, and the arcuate portion is bent toward the second surface.

7. The housing assembly of claim 6 wherein the tangent to the first surface makes an angle of greater than 60 ° with the tangent to the third surface on a side away from the housing.

8. The housing assembly of claim 1, further comprising at least one of a connection layer disposed between the decorative film and the housing, a color layer disposed on the housing, and a protective layer disposed on the housing, the protective layer including at least one of a hardened layer and an anti-fingerprint layer.

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

forming a first coating layer on the shell;

and connecting the decorative film with the shell to obtain a shell assembly.

10. The method of claim 9, comprising:

providing the shell precursor, and performing bending forming after forming a first texture layer on the shell precursor to obtain the shell with the first texture layer;

forming the first coating layer on the surface of one side, far away from the shell, of the first texture layer;

providing the substrate layer, and sequentially forming the second texture layer and the second coating layer on the substrate layer to obtain the decorative film;

and arranging the decorative film on the surface of one side of the first film coating layer, which is far away from the shell, so as to obtain the shell component.

11. The method of claim 9, further comprising:

at least one deck in shaping articulamentum, colour layer and the protective layer on the casing, the protective layer includes the at least one deck in sclerosis layer and the anti fingerprint layer.

12. The utility model provides an electronic equipment, its characterized in that, including the display screen and with the casing subassembly that the display screen is connected, casing subassembly includes the casing, and sets up first texture layer, first coating film layer and decorative film on the casing, the casing is the transparent casing of curved surface, first texture layer laminating the casing sets up, first texture layer with first coating film layer sets up with one side or relative both sides of casing, decorative film includes the substrate layer and sets up second texture layer and second coating film layer on the substrate layer, first coating film layer and/or the thickness on second coating film layer is greater than or equal to 400 nm.