Housing assembly, manufacturing method for housing assembly, and device having housing assembly

Abstract

The present application belongs to the technical field of housing manufacturing. Disclosed are a housing assembly, a manufacturing method for a housing assembly, and a device having a housing assembly. The housing assembly comprises a transparent housing, a transparent adhesive and a transparent appearance member. The transparent appearance member is bonded to the transparent housing by means of the transparent adhesive. The first refractive index difference between the transparent appearance member and the transparent adhesive is less than or equal to 0.3; and the second refractive index difference between the transparent housing and the transparent adhesive is less than or equal to 0.3. The components in the housing assembly can present a seamlessly integrated effect, such that the housing assembly has a more refined appearance.

Description

Housing assembly, method of manufacturing a housing assembly, and device with housing assembly TECHNICAL FIELD

[0001] The present application belongs to the technical field of housing manufacturing, and particularly relates to a housing assembly, a manufacturing method of the housing assembly, and a device with the housing assembly. BACKGROUND

[0002] With the pursuit of the appearance of devices such as mobile phones, device manufacturers of mobile phones and the like pay more and more attention to the aesthetic appearance of the appearance, so as to provide the competitiveness of products. As a part of the appearance of devices such as mobile phones, the housing is an object that is focused on by device manufacturers.

[0003] At present, an appearance member is arranged on the housing. Such an appearance member and the housing are two independent structural members, which makes the arrangement of the appearance member very conspicuous in vision, greatly reduces the overall delicacy of the device, and affects the aesthetic appearance of the device.

[0004] SUMMARY

[0005] The present application provides a housing assembly, a manufacturing method of the housing assembly, and a device with the housing assembly, and can solve the technical problem that the arrangement of the appearance member on the housing is very conspicuous in vision.

[0006] In a first aspect, an embodiment of the present application provides a housing assembly. The housing assembly comprises a transparent housing, a transparent adhesive, and a transparent appearance member. The transparent appearance member is bonded to the transparent housing by the transparent adhesive. Wherein the first refractive index difference between the transparent appearance member and the transparent adhesive is less than or equal to 0.3; the second refractive index difference between the transparent housing and the transparent adhesive is less than or equal to 0.3.

[0007] In the specific implementation process, the first refractive index difference and the second refractive index difference can be the same or different.

[0008] In the shell assembly, when the difference between the refractive index of the transparent appearance member and the transparent adhesive is less than or equal to 0.3, and the difference between the refractive index of the transparent shell and the transparent adhesive is less than or equal to 0.3, the difference between the refractive index of the transparent appearance member and the transparent adhesive and the difference between the refractive index of the transparent shell and the transparent adhesive are not large, and the transparent appearance member, the transparent adhesive and the transparent shell can be regarded as a whole transparent structure for light. The light is not easily reflected between the transparent appearance member, the transparent adhesive and the transparent shell, but is reflected at the interface that can reflect. That is, the light incident to the transparent appearance member, the transparent adhesive and the transparent shell is substantially reflected into the human eye at the same interface, which makes the independently formed transparent appearance member and the transparent shell visually present an integrated effect, rather than a multi-layer structure, so that the shell assembly has higher delicacy, and the appearance of the device with the shell assembly can be improved. Even if the interface between the transparent appearance member and the transparent adhesive, the interface between the transparent adhesive and the transparent shell, and the interface between the transparent shell and the decorative coating exist reflected light, the reflected light is extremely small and cannot cause the shell assembly to present a multi-layer structure in vision.

[0009] In addition, the shell assembly still presents an integrated effect by using the independently formed appearance member and the shell, and has lower manufacturing cost compared with the integrally formed appearance member and the shell, so that the shell assembly can be applied and popularized in middle and low-end products.

[0010] In some embodiments, the first refractive index difference is less than or equal to 0.25.

[0011] Further, the first refractive index difference is less than or equal to 0.2. In the specific implementation process, the smaller the first refractive index difference is, the better.

[0012] In some embodiments, the second refractive index difference is less than or equal to 0.25.

[0013] Further, the second refractive index difference is less than or equal to 0.2. In the specific implementation process, the smaller the second refractive index difference is, the better.

[0014] Optionally, the transparent appearance member is located on the side of the outer surface of the transparent shell. The outer surface of the transparent shell is the appearance surface of the transparent shell.

[0015] In some embodiments of the present application, the shell assembly further comprises a transparent hardening liquid layer. The transparent hardening liquid layer extends from the top surface of the transparent appearance member to the outer surface of the transparent shell, so as to cover the outer surface of the transparent appearance member and cover at least part of the area of the outer surface of the transparent shell not occupied by the transparent appearance member. The at least part of the area surrounds the transparent appearance member and is connected to the transparent appearance member.

[0016] The third refractive index difference between the transparent hardening liquid layer on the transparent appearance component surface and the transparent appearance component is less than or equal to 0.3, and the fourth refractive index difference between the transparent hardening liquid layer on the transparent shell outer surface and the transparent shell is less than or equal to 0.3.

[0017] In specific implementation, the third refractive index difference and the fourth refractive index difference can be the same or different.

[0018] It should be noted that the at least part of the transparent shell outer surface not occupied by the transparent appearance component can be a part of the transparent shell outer surface not occupied by the transparent appearance component, or the entire transparent shell outer surface not occupied by the transparent appearance component. Regardless of whether it is a part or the entire transparent shell outer surface, it needs to surround the transparent appearance component and be connected to the transparent appearance component.

[0019] In this embodiment, the transparent hardening liquid layer extends from the top surface of the transparent appearance component to the outer surface of the transparent shell, covering not only the outer surface of the transparent appearance component but also extending to the outer surface of the transparent shell around the transparent appearance component. The transparent hardening liquid layer covers at least part of the outer surface of the transparent shell surrounding the transparent appearance component and connected to the transparent appearance component. It can be understood that when the transparent hardening liquid layer extends to the outer surface of the transparent shell, the edge line observed in the thickness direction across the transparent appearance component can block the gap that can exist between the transparent appearance component and the transparent shell. On the one hand, it can reduce the visual prominence of the gap, thereby improving the appearance integrity of the shell assembly. On the other hand, it can provide a secondary seal for the gap that can exist between the transparent appearance component and the transparent shell, thereby reducing the risk of external liquid entering the interior of the shell assembly from between the transparent appearance component and the transparent shell, and further improving the waterproof performance of the shell assembly.

[0020] Moreover, the transparent hardening liquid layer can block the obvious boundary line between the transparent appearance component and the transparent shell, so that the shell assembly presents an integrated appearance. In addition, due to the third refractive index difference being less than or equal to 0.3 and the fourth refractive index difference being less than or equal to 0.3, based on the similar principle of the refractive index difference setting, the setting of the transparent hardening liquid layer can also make the transparent hardening liquid layer and the transparent appearance component and the transparent shell respectively present an integrated appearance effect in vision rather than a layered structure.

[0021] In some embodiments, the third refractive index difference is less than or equal to 0.25.

[0022] Further, the third refractive index difference is less than or equal to 0.2. In specific implementation, the smaller the third refractive index difference is, the better.

[0023] In some embodiments, the fourth refractive index difference is less than or equal to 0.25.

[0024] Further, the fourth refractive index difference is less than or equal to 0.2. In specific implementation, the smaller the fourth refractive index difference is, the better.

[0025] As an optional implementation, the transparent hardening liquid layer also extends from the outer surface of the transparent shell to the edge of the outer surface of the transparent shell to cover the outer surface of the transparent shell.

[0026] In this embodiment, the transparent hardening liquid layer extends from the top surface of the transparent appearance component to the edge of the outer surface of the transparent shell to cover the outer surface of the transparent appearance component and all the areas of the outer surface of the transparent shell not occupied by the transparent appearance component, that is, to cover the entire outer surface of the shell assembly, thereby improving the overall strength of the outer surface of the shell assembly, and is particularly suitable for the case where the transparent shell and the transparent appearance component are made of plastic. It can be understood that the hardness of plastic is lower than that of glass, and therefore the effect of improving the surface strength can be achieved by the transparent hardening liquid layer. Of course, in the case where the transparent shell and the transparent appearance component are made of glass, the effect of improving the surface strength can also be achieved by setting the transparent hardening liquid layer.

[0027] Of course, in other embodiments, the transparent hardening liquid layer can also not extend to the edge of the outer surface of the transparent shell, which is not limited in the embodiments of the present application.

[0028] Optionally, the transparent hardening liquid layer includes a first hardening liquid area and a second hardening liquid area connected as a whole. The first hardening liquid area is distributed on the top surface of the transparent appearance component, and the second hardening liquid area extends from the side surface of the transparent appearance component to the outer surface of the transparent shell. The reflectivity of the first hardening liquid area is higher than that of the second hardening liquid area.

[0029] It should be noted that in the case where the reflectivity of the first hardening liquid area is higher than that of the second hardening liquid area, the brightness of the first hardening liquid area is higher than that of the second hardening liquid area. In this way, the first hardening liquid area appears brighter and is a highlight area, and the second hardening liquid area appears dimmer and is a matte area. In this way, it is more in line with the current trend, thereby helping to improve the appearance of the shell assembly.

[0030] In addition, the second hardening liquid area extends from the side surface of the transparent appearance component to the outer surface of the transparent shell and is integrally formed without being partitioned, which helps to seal the gap that may exist between the transparent appearance component and the transparent shell, thereby reducing the risk of external liquid entering the inside of the shell assembly from between the transparent appearance component and the transparent shell, and further improving the waterproof performance of the shell assembly.

[0031] Of course, in other embodiments, the transparent hardening liquid layer can also not be partitioned and all appear as matte or highlight areas, which is not limited in the embodiments of the present application.

[0032] Optionally, the transparent gel has an overflow area overflowing to a side of the transparent appearance component side faces; the transparent hardening liquid layer also covers the overflow area.

[0033] It should be noted that if the overflow area of the transparent gel overflowing to a side of the transparent appearance component side faces is not shielded, the overflow area leaks out on the surface of the shell assembly, which greatly affects the aesthetics. In this embodiment, the transparent hardening liquid layer also covers the overflow area of the transparent gel, which can shield the overflow area of the transparent gel and ensure the aesthetics of the shell assembly. It can be understood that in order to achieve the purpose of covering the overflow area of the transparent gel with the transparent hardening liquid layer, the area of the transparent hardening liquid layer corresponding to the overflow area is required to be formed after the transparent gel.

[0034] In addition, from another angle, the overflow of the transparent gel is a manifestation that the transparent gel is misaligned with the transparent appearance component in the thickness direction of the transparent shell. This embodiment can support the case that the transparent gel is misaligned with the transparent appearance component in the thickness direction of the transparent shell by setting the transparent hardening liquid layer, thereby reducing the processing difficulty of the transparent gel.

[0035] Optionally, the transparent gel is aligned with the transparent appearance component in the thickness direction of the transparent shell. It can be understood that when the transparent gel is generally considered to overflow, the transparent gel is misaligned with the transparent appearance component in the thickness direction of the transparent shell, and the overflow area will reduce the aesthetics of the shell assembly. Therefore, in this embodiment, the transparent gel is aligned with the transparent appearance component in the thickness direction of the transparent shell, i.e., the transparent gel does not exist in the overflow condition, thereby ensuring the aesthetics of the shell assembly.

[0036] In addition, in the case that the transparent gel is aligned with the transparent appearance component in the thickness direction of the transparent shell, the transparent appearance component and the transparent shell are filled with the transparent gel, and there is no gap between the transparent appearance component and the transparent shell, and there is naturally no case of poor appearance integration caused by the gap.

[0037] In some design manners of the present application, the material of the transparent shell and the material of the transparent appearance component are plastic.

[0038] It should be noted that due to the limitation of manufacturing cost, the transparent shell and the transparent appearance component of the current low-end products are generally made of plastic. In this case, the shell assembly can be applied to low-end products, and this embodiment provides an optional application scenario for the shell assembly.

[0039] Exemplarily, the transparent shell and the transparent appearance component can include, but are not limited to, any one of the following plastics: acrylic (refractive index of 1.49-1.50), polycarbonate (PC, refractive index of about 1.59), polyester resin (PET, refractive index of about 1.52), and the like. In this case, exemplarily, the transparent adhesive can include, but is not limited to, any one of the following materials: light-curing acrylic adhesive (refractive index of 1.49-1.50), acrylic resin (refractive index of 1.40-1.50), polyester resin (refractive index of about 1.50), silicone resin (refractive index of 1.40-1.57), and the like. This example can make the refractive index difference less than or equal to 0.2, so that the shell assembly visually presents an integrated appearance effect.

[0040] In some other design modes of the present application, the materials of the transparent shell and the transparent appearance component are glass.

[0041] Due to the factors such as the crystal clear appearance of glass, the fashion and technology, the hardness is not afraid of scratching, and the color is not easy to change, the delicacy of the shell assembly can be improved. It should be noted that because the processing and manufacturing process of glass is more complex, the transparent shell and the transparent appearance component of the current medium and high-end products are usually made of glass. This embodiment provides another optional application scenario for the shell assembly.

[0042] It should be noted that the refractive index of glass is usually 1.5, which varies with the material and type. In this case, exemplarily, when selecting materials, the transparent adhesive can include, but is not limited to, any one of the following materials: light-curing acrylic adhesive (refractive index of 1.49-1.50), polyester resin (refractive index of about 1.50), and the like. This example also makes the refractive index difference less than or equal to 0.2, so that the shell assembly visually presents an integrated appearance effect.

[0043] In addition, in the case where the materials of the transparent shell and the transparent appearance component are glass, the surface of the transparent shell and the transparent appearance component can also be etched directly by plasma exchange technology to form a structure that improves the strength of the outer surface of the shell assembly, instead of the transparent hardening liquid layer to achieve the effect of improving the surface strength, which is not limited by the embodiments of the present application. In this case, because the transparent shell outer surface and the transparent appearance component outer surface are not provided with the transparent hardening liquid layer to shield the overflow area of the transparent adhesive, the transparent adhesive is aligned with the transparent appearance component in the thickness direction to avoid the transparent adhesive from overflowing from the side of the transparent appearance component and reducing the aesthetics of the shell assembly.

[0044] Exemplarily, the transparent shell is a back cover, and the back cover is provided with a mounting opening. The transparent appearance component is a camera decoration piece. The transparent adhesive is attached to the outer surface of the back cover; and the camera decoration piece is attached to the outer surface of the back cover through the transparent adhesive to cover the mounting opening.

[0045] It can be understood that the camera decoration is bonded to the outer surface of the back cover and is part of the appearance of the shell assembly, which will affect the appearance of the shell assembly. The embodiment provides a specific implementation of the transparent appearance member and the transparent shell.

[0046] Optionally, the transparent adhesive surrounds the mounting port. In this embodiment, the camera decoration is bonded to the back cover by the transparent adhesive surrounding the mounting port, which can surround the mounting port to facilitate sealing the gap between the camera decoration and the back cover, thereby reducing the risk of external liquid entering the inside of the shell assembly through the mounting port, and further improving the waterproof performance of the shell assembly.

[0047] In a second aspect, the embodiments of the present application provide a manufacturing method of the shell assembly provided by any of the first aspect, comprising: applying a transparent adhesive to a transparent shell; and bonding a transparent appearance member to the transparent shell through the transparent adhesive to obtain the shell assembly; wherein the first refractive index difference between the transparent appearance member and the transparent adhesive is less than or equal to 0.3, and the second refractive index difference between the transparent shell and the transparent adhesive is less than or equal to 0.3.

[0048] In some embodiments of the present application, the transparent adhesive is applied to the outer surface of the transparent shell. The transparent appearance member is bonded to the transparent shell through the transparent adhesive, specifically including: bonding the transparent appearance member and the transparent adhesive away from the surface of the transparent shell.

[0049] In some embodiments of the present application, after the transparent appearance member and the transparent adhesive are bonded away from the surface of the transparent shell, the above manufacturing method further comprises: forming a second hardening liquid area on the side surface of the transparent appearance member to the outer surface of the transparent shell, so that the second hardening liquid area and the first hardening liquid area distributed on the top surface of the transparent appearance member form a transparent hardening liquid layer, covering the outer surface of the transparent appearance member and at least part of the area of the outer surface of the transparent shell not occupied by the transparent appearance member, the at least part of the area surrounding the transparent appearance member and being in contact with the transparent appearance member.

[0050] In this embodiment, the second hardening liquid area distributed on the side surface of the transparent appearance member to the outer surface of the transparent shell is formed after the transparent appearance member and the transparent adhesive are bonded, which can shield the overflow area of the transparent adhesive to avoid the transparent adhesive overflowing from the side surface of the transparent appearance member and reducing the aesthetic appearance of the shell assembly.

[0051] In some embodiments of the present application, after the transparent appearance component and the transparent adhesive are bonded to the surface of the transparent shell away from the transparent case, the manufacturing method further comprises: forming a transparent hardening liquid layer on the top surface of the transparent appearance component to the area of the outer surface of the transparent shell, so that the transparent hardening liquid layer covers the outer surface of the transparent appearance component and at least part of the area of the outer surface of the transparent shell not occupied by the transparent appearance component, and the at least part of the area surrounds the transparent appearance component and is in contact with the transparent appearance component.

[0052] In this embodiment, the transparent hardening liquid layer distributed on the side surface of the transparent appearance component to the outer surface of the transparent shell is formed after the transparent appearance component and the transparent adhesive are bonded, which can shield the overflow area of the transparent adhesive to avoid the transparent adhesive overflowing from the side surface of the transparent appearance component and reducing the aesthetics of the shell assembly.

[0053] Optionally, the transparent appearance component is formed by cutting the transparent appearance component substrate; and the transparent shell is formed by cutting the transparent shell substrate.

[0054] In the related art, the transparent appearance component and the transparent shell are formed by an injection molding process. Due to the limitation of the injection molding process, the height of the boss of the transparent appearance component and the thickness of the transparent shell have certain proportional limitations. For example, when the thickness of the transparent shell is 0.6 mm, the height of the boss of the transparent appearance component is 1.2 mm, which greatly limits the height of the boss, thereby limiting the installation space provided for the camera module. In addition, due to the limitation of the injection molding process, the corners of the mold are not easy to fill, resulting in insufficient R angle of the outer surface of the integrally formed structure.

[0055] In this embodiment, the cutting process does not have proportional limitations on the thickness of the transparent shell and the transparent appearance component, and therefore, the thickness of the transparent appearance component can be set as needed to meet the installation space required by the camera module. In addition, in this embodiment, the R angle of the shell assembly obtained by cutting is more forceful.

[0056] Specifically, the process of forming the transparent shell by cutting the transparent shell substrate comprises: forming a to-be-cut decorative coating on the inner surface of the transparent shell substrate; cutting the transparent shell substrate with the to-be-cut decorative coating to form a plurality of to-be-formed transparent shells with the to-be-formed decorative coating on the inner surface; the to-be-formed decorative coating is cut from the to-be-cut decorative coating; and the to-be-formed transparent shell with the to-be-formed decorative coating on the inner surface is subjected to forming processing to obtain a transparent shell with a decorative coating on the inner surface, the decorative coating is formed by the to-be-formed decorative coating, and the transparent shell is formed by the to-be-formed transparent shell.

[0057] It can be understood that the inner surface of the transparent shell formed by the injection molding process cannot be completely flat, which makes it impossible to directly form a decorative coating with a decorative effect on the inner surface of the transparent shell. It is necessary to form a decorative coating on the surface of a decorative film (such as a PET film) which is flat and has a bendable characteristic, and then bend the decorative film to fit the non-flat inner surface of the transparent shell, so as to achieve the decorative effect, but the manufacturing cost is higher and the process is more complex.

[0058] In this embodiment, the transparent shell is obtained by cutting the transparent shell substrate to obtain a to-be-formed transparent shell, and the to-be-cut decorative coating is cut to be located on the inner surface of the transparent shell. It can be understood that the cutting process supports cutting of the flat transparent shell substrate, so the flat transparent shell substrate can be selected for cutting. Before cutting, the to-be-cut decorative coating is first formed on the flat inner surface, and then the to-be-cut decorative coating is cut together with the transparent shell substrate to obtain the to-be-formed transparent shell with the decorative coating on the inner surface. Then, through the forming process, the transparent shell with the required shape and the decorative coating on the inner surface is obtained. Compared with the scheme of forming a decorative coating on the surface of the transparent shell obtained by the injection molding process, the manufacturing cost is lower and the process is simpler because there is no need to provide a decorative film to carry the decorative coating.

[0059] Optionally, the transparent adhesive is coated on the transparent shell, including: coating the transparent adhesive on the transparent shell by a screen printing process. When the transparent adhesive is screen printed, the thickness of the transparent adhesive is controlled by the mesh number of the screen printing screen, and the area of the adhesive is controlled by the screen printing screen, so that the area, position and thickness of the adhesive can be accurately controlled, so that the transparent appearance component is not easy to overflow and lack of glue after being attached, thereby ensuring the appearance effect. In the specific implementation process, the composition of the glue used to form the transparent adhesive can be modified so that the glue is suitable for screen printing. The ordinary transparent adhesive mainly includes prepolymer (such as low molecular weight resin), monomer, photoinitiator and additive. In this embodiment, the solvent is added and the proportion of the components in the glue is adjusted (the low molecular weight resin is increased and the monomer content is reduced) to adjust the flowability of the glue while ensuring the viscosity of the glue, so that the glue is suitable for screen printing.

[0060] In a third aspect, the embodiments of the present application provide a device with a shell assembly. The device with the shell assembly includes the shell assembly provided by any of the embodiments of the first aspect or the shell assembly obtained by the method provided by any of the embodiments of the second aspect.

[0061] It can be understood that, in addition to the separate description, the beneficial effects achieved by the manufacturing method provided by any of the embodiments of the second aspect and the device with the shell assembly provided by the third aspect can be adaptively referred to the beneficial effects described by the shell assembly provided by the first aspect, which will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0062] FIG. 1 is a perspective view of a device with a housing assembly according to an embodiment of the present application;

[0063] FIG. 2 is an exploded view of the device with the housing assembly shown in FIG. 1;

[0064] FIG. 3 is a schematic view of a partial structure of the device with the housing assembly shown in FIG. 1 according to the related art, which involves a camera decoration piece;

[0065] FIG. 4 is a schematic view of a cross-section along the cutting line B-B shown in FIG. 3;

[0066] FIG. 5 is a schematic view of another partial structure of the device with the housing assembly shown in FIG. 1 according to the related art, which involves the camera decoration piece;

[0067] FIG. 6 is an exploded view of a housing assembly according to an embodiment of the present application;

[0068] FIG. 7 is a schematic view of a cross-section along the cutting line A-A of the housing assembly shown in FIG. 2;

[0069] FIG. 8 is an exploded view of a housing assembly according to an embodiment of the present application, in which a transparent appearance member is a LOGO piece;

[0070] FIG. 9 is another schematic view of a cross-section along the cutting line B-B shown in FIG. 3;

[0071] FIG. 10 is another schematic view of a cross-section along the cutting line B-B shown in FIG. 3;

[0072] FIG. 11 is a schematic view of a cross-section along the cutting line A-A of the housing assembly shown in FIG. 2;

[0073] FIG. 12 is a schematic view of a cross-section along the cutting line A-A of the housing assembly shown in FIG. 2;

[0074] FIG. 13 is a schematic view of a Z-XY plane according to an embodiment of the present application, which is observed from a perspective along the negative direction of the Z axis of the housing assembly shown in FIG. 12;

[0075] FIG. 14 is a schematic view of a cross-section along the cutting line A-A of the housing assembly 200 shown in FIG. 2;

[0076] FIG. 15 is a schematic view of a Z-XY plane according to an embodiment of the present application, which is observed from a perspective along the negative direction of the Z axis of the housing assembly shown in FIG. 14;

[0077] FIG. 16 is a schematic view of a transparent gel overflowing from a side of a camera decoration piece according to an embodiment of the present application;

[0078] Figure 17 is a cross-sectional view of the shell assembly shown in Figure 2 along the cutting line A-A;

[0079] Figure 18 is a cross-sectional view of the shell assembly 200 shown in Figure 2 along the cutting line A-A;

[0080] Figure 19 is a flowchart of a manufacturing method of a shell assembly according to an embodiment of the present application;

[0081] Figure 20 is a flowchart of another manufacturing method of a shell assembly according to an embodiment of the present application;

[0082] Figure 21 is a flowchart of another manufacturing method of a shell assembly according to an embodiment of the present application;

[0083] Figure 22 is a flowchart of another manufacturing method of a shell assembly according to an embodiment of the present application;

[0084] Figure 23 is a process flowchart of the shell assembly shown in Figure 18 according to an embodiment of the present application;

[0085] Figure 24 is a structural process diagram corresponding to the process flowchart shown in Figure 23;

[0086] Figure 25 is a process flowchart of the shell assembly shown in Figure 17 according to an embodiment of the present application;

[0087] Figure 26 is a structural process diagram corresponding to the process flowchart shown in Figure 25;

[0088] Figure 27 is a structural diagram of a shell assembly with an integrally injection-molded camera decoration and back cover according to the related art.

[0089] Reference signs:

[0090] 10 - mobile phone (device with shell assembly);

[0091] 100 - screen; 110 - screen cover plate; 120 - display screen;

[0092] 200 - shell assembly; 210 - back cover (transparent shell); 210a - mounting groove; 210b - injection-molded recess; 211 - mounting opening; 220 - camera decoration (transparent appearance member); 220a - light-transmitting area; 230 - decorative coating; 231 - first decorative coating; 232 - second decorative coating; 240 - back adhesive; 250 - transparent adhesive; 260 - transparent hardening liquid layer; 261 - first hardening liquid area; 262 - second hardening liquid area; 270 - LOGO piece; 280 - decorative film; gap - W;

[0093] 300 - middle frame; 310 - bezel; 320 - middle plate;

[0094] 400 - Camera module; 500 - Circuit board; 600 - Battery. Detailed Implementation

[0095] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0096] The terms "first" and "second," etc., used in the specification and claims herein are used to distinguish different objects, not to describe a specific order of objects. In the description of embodiments in this application, unless otherwise stated, "multiple" means two or more; for example, multiple processing units refer to two or more processing units, etc.; multiple elements refer to two or more elements, etc.

[0097] It should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0098] In the embodiments of this application, the words "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplarily" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of the words "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner.

[0099] In the embodiments of this application, x~y is used to represent [x, y], which means that the endpoint number x and the endpoint number y can be taken, or any number between the two endpoint numbers can be taken.

[0100] Before introducing the embodiments of this application, let's first introduce the relevant terms involved in the embodiments of this application:

[0101] 1. Covering refers to covering the exposed surface of the covered component, similar to covering with a blanket.

[0102] 2. Attachment refers to the state in which one object is attached to the surface of another object.

[0103] 3、Spraying process is a coating method that disperses a thin film material with fluidity into uniform and fine mist droplets by means of pressure or centrifugal force and sprays the thin film material onto a surface of a coated object.

[0104] 4、Screen printing process, also known as silk screen printing process, is a main printing method in stencil printing. In the semiconductor field, the screen printing process is widely used in various production links, such as wafer coating of glass powder, photoresist, solder printing in semiconductor packaging links, and passivation insulation film, etc.

[0105] The basic principle of the screen printing process is to inject the required printing paste on a screen with a specific pattern, move the squeegee at a certain angle and pressure, so that the paste is printed through the screen holes to the carrier (such as a wafer), and the pattern processing is completed.

[0106] 5、Reflectivity is a measure of the ability of an object to reflect incident light, which represents the ratio of the intensity of reflected light to the intensity of incident light in the incident light. Reflectivity is related to the brightness of the object: the higher the reflectivity, the stronger the reflected light, and the brighter the object looks; the lower the reflectivity, the weaker the reflected light, and the darker the object looks.

[0107] 6、Refractive index is the ratio of the propagation speed of light in vacuum to the propagation speed of light in medium. The refractive index of vacuum is 1, therefore, the refractive index of medium is usually greater than 1. When light propagates from one medium to another, due to the difference in refractive index of the two media, light will be reflected and refracted at the interface.

[0108] 7、In the application embodiment, transparent means that the light transmittance is greater than or equal to 80%.

[0109] With the pursuit of the appearance of devices with shell assemblies such as mobile phones, manufacturers of devices with shell assemblies such as mobile phones pay more and more attention to the aesthetic appearance to provide competitiveness of the product. It should be noted that the shell assembly refers to a structural assembly including at least a shell. It can be understood that the shell as part of the appearance of the device with shell assembly is the object of focus of the device manufacturer.

[0110] Currently, an appearance member can be provided on the shell, which can be considered as part of the shell assembly. The so-called appearance member refers to a structural member that can affect the appearance of the shell, which can also be understood as a structural member visible from the outer surface of the shell. For example, for a mobile phone, the appearance member can be a camera decoration member, a LOGO (logo) member, etc. It can be seen that whether the appearance member is aesthetically pleasing on the shell greatly affects the aesthetic appearance of the entire device with shell assembly, which needs to be focused on.

[0111] It should be noted that in the embodiments of the present application, the device with the shell assembly can be an electronic device such as a mobile phone, or a non-electronic device with an appearance component such as a LOGO and / or camera decoration, for example, the non-electronic device can be a transparent display cabinet with a LOGO (the inside of which can be used to accommodate a structure to be displayed). Hereinafter, the device with the shell assembly is taken as a mobile phone and the appearance component is taken as a camera decoration as an example for description.

[0112] Exemplarily, please refer to FIG. 1 and FIG. 2, FIG. 1 is a perspective view of a device 10 with a shell assembly provided by an embodiment of the present application, and FIG. 2 is a structural exploded view of the device 10 with the shell assembly shown in FIG. 1.

[0113] The device 10 with the shell assembly shown in FIG. 1 and FIG. 2 is a mobile phone 10, which includes a screen 100, a shell assembly 200, a middle frame 300, and a camera module 400.

[0114] It can be understood that FIG. 1 and FIG. 2 only schematically show some components included in the mobile phone, and the actual shape, actual size, actual position and actual structure of these components are not limited by FIG. 1 and FIG. 2. In addition, in other embodiments of the present application, the mobile phone can include more or fewer components than shown, or combine certain components, or split certain components, or different component arrangements.

[0115] In order to facilitate the following description, an XYZ coordinate system is established, and the width direction of the mobile phone 10 is defined as the Y-axis direction, the length direction of the mobile phone 10 is defined as the X-axis direction, and the thickness direction of the mobile phone 10 is defined as the Z-axis direction (referred to as Z direction). It should be noted that the coordinate system setting of the mobile phone 10 can be flexibly set according to actual needs.

[0116] The screen 100 is used to display images, videos, etc. As shown in FIG. 2, the screen 100 includes a screen cover plate 110 and a display screen 120 (English name: panel, also known as display panel).

[0117] The screen cover plate 110 and the display screen 120 are arranged in layers. The screen cover plate 110 is mainly used to protect and prevent dust from the display screen 120. The material of the screen cover plate 110 can be, but is not limited to, glass.

[0118] The display screen 120 can be a flexible display screen or a rigid display screen. For example, the display screen 120 can be an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode display screen, a micro organic light-emitting diode display screen, a micro organic light-emitting diode display screen, a quantum dot light emitting diode (QLED) display screen, or a liquid crystal display (LCD).

[0119] The housing assembly 200 includes a back cover 210 and a camera decoration 220.

[0120] The back cover 210 is used to protect the functional components of the mobile phone. The back cover 210 is located on the backlight side of the display screen 120 and is stacked with the display screen 120. The light-emitting side of the display screen 120 is the side facing the screen display area of the display screen 120, and the opposite side of the display screen 120 is the backlight side of the display screen 120, that is, the side of the display screen 120 facing away from the screen cover plate 110. It can be understood that the stacking direction of the display screen 120 and the back cover 210 in the mobile phone 10 is the Z-axis direction. The plane in which the display screen 120 is located is the Z-XY plane. For ease of description, the side of the back cover 210 facing the display screen 120 is referred to as the inner surface of the back cover 210, and the side of the back cover 210 facing away from the display screen 120 is referred to as the outer surface of the back cover 210. It can be understood that the outer surface of the back cover 210 is the appearance surface of the back cover 210.

[0121] The middle frame 300 is located between the screen 100 and the back cover 210 and includes a frame 310 and a middle plate 320.

[0122] The frame 310 is fixedly connected with the screen 100 and the back cover 210 around the side of the screen 100 and the back cover 210. For example, the frame 310 can be fixedly connected with the screen 100 and the back cover 210 by adhesive. In other embodiments, the frame 310 can be integrally formed with the back cover 210, that is, the frame 310 and the back cover 210 are an integral structure. It can be understood that the screen 100, the back cover 210, and the frame 310 together enclose a containing space of the mobile phone 10, so that functional components such as the camera module 400, the circuit board 500, and the battery 600 shown in FIG. 2 are placed in the containing space, and the functional components in the containing space are sealed and protected.

[0123] As shown in FIG. 2, the middle plate 320 is fixed around the inner surface of the frame 310. For example, the middle plate 320 can be fixed on the frame 310 by welding. The middle plate 320 can also be integrally formed with the frame 310. The structure formed by the middle plate 320 and the frame 310 is generally referred to as the middle frame 300. The middle plate 320 serves as a structural “skeleton” of the mobile phone 10 and is used to mount functional components of the mobile phone 10, such as the camera module 400, the circuit board 500 shown in FIG. 2, and the battery 600.

[0124] It should be noted that in other embodiments, part or all of the structure of the middle frame 300 can also be part of the shell assembly 200, which is not limited in the embodiments of the present application.

[0125] The camera module 400 is used for photographing photos / videos. The number of camera modules 400 can be one or more, and three camera modules 400 are shown in the figure. For example, the camera module 400 can be fixed and supported on the middle plate 320 by threaded connection, clamping, welding, or the like.

[0126] The camera module 400 in FIGS. 1 and 2 is used as a rear camera module. Specifically, the camera module 400 can be used as a rear main camera module, a wide-angle camera module, or a long-focus camera module. In this way, the camera module 400 is fixed to the surface of the middle plate 320 facing the back cover 210, and the light entrance surface of the camera module 400 faces the side where the back cover 210 is located. In some embodiments, the camera module 400 can extend to the side of the back cover 210 away from the screen cover plate 110 (hereinafter referred to as the outer side of the back cover 210) to protrude from the back cover 210 to obtain a larger thickness space. Of course, in other embodiments, the camera module 400 can also not protrude from the back cover 210, which is not limited in the embodiments of the present application.

[0127] The camera decoration piece 220 is fixed on the back cover 210 of the mobile phone 10 and opposite to the camera module 400, used for protecting the camera module 400 and decorating the back cover 210. In some examples, the camera decoration piece 220 protrudes to the outside of the back cover 210. In this way, the camera decoration piece 220 can increase the installation space of the camera module 400 in the mobile phone 10 along the Z-axis direction. Of course, in other examples, the camera decoration piece 220 can also be flush with the back cover 210 or recessed into the accommodation space of the mobile phone 10.

[0128] As shown in FIG. 2, the camera decoration piece 220 is provided with a light-transmitting area 220a, which allows light to pass through and enter the light-incident surface of the camera module 400. Optionally, the light-transmitting area 220a can protrude from the surface of other areas of the camera decoration piece 220 except the light-transmitting area 220a, so as to obtain a larger installation space.

[0129] For ease of illustration, the side of the camera decoration piece 220 facing the camera module 400 is referred to as the bottom surface of the camera decoration piece 220, which can also be referred to as the inner surface of the camera decoration piece 220; and the side of the camera decoration piece 220 away from the camera module 400 is referred to as the top surface of the camera decoration piece 220.

[0130] In addition, the present application also relates to the outer surface of the camera decoration piece 220, i.e. the appearance surface of the camera decoration piece 220. It can be understood that the outer surface of the camera decoration piece 220 at least includes the top surface of the camera decoration piece 220. When the camera decoration piece 220 protrudes from the outer surface of the back cover 210, the outer surface of the camera decoration piece 220 can also include at least part of the side surface of the camera decoration piece 220.

[0131] As can be seen from the above, the camera decoration piece 220 is an appearance component arranged on the back cover 210 of the mobile phone 10, and the structural design thereof directly affects the aesthetics of the mobile phone 10.

[0132] The current mainstream camera decoration piece 220 can be divided into a non-integral assembly decoration piece and an integral structure decoration piece, which will be described in detail below with reference to FIGS. 3-5.

[0133] First, the camera decoration piece 220 of the non-integral assembly decoration piece will be described by way of example with reference to FIGS. 3-4.

[0134] For example, as shown in FIG. 3, FIG. 3 is a schematic diagram of a part of the device 10 with the shell assembly shown in FIG. 1, which involves the camera decoration piece 220 according to the related art. The camera decoration piece 220 shown in FIG. 3 is a non-integral assembly decoration piece.

[0135] The non-integrally assembled decoration part refers to the camera decoration part 220 and the back cover 210 included in the shell assembly 200, which are two structural parts independently formed. The camera decoration part 220 needs to be assembled to the back cover 210 through reprocessing at a later stage, and the camera module 400 is covered to protect the camera module 400 and decorate and beautify the back cover 210.

[0136] The inventor found that after the camera decoration part 220 of the non-integrally assembled decoration part is assembled to the back cover 210, the material refractive index difference of the structure in the shell assembly 200 formed is too large, causing the light to be reflected at the interface of different positions, resulting in that the camera decoration part 220 and the back cover 210 visually appear as multiple independent structures, which is very conspicuous and cannot present a unified effect, so that the delicacy of the shell assembly 200 is poor, and the aesthetic appearance of the shell assembly 200 is greatly reduced. In order to facilitate understanding, the following will be exemplarily described in combination with FIG. 4.

[0137] Exemplarily, as shown in FIG. 4, FIG. 4 is a schematic diagram of a cross-sectional structure obtained by cutting along the cutting line B-B shown in FIG. 3. Only the structure involved in the shell assembly 200 is shown, and other structures of the mobile phone 10 are not shown.

[0138] In the cross-sectional structure, the lower surface of the back cover 210 (i.e., the inner surface of the back cover 210) is provided with the first decorative coating 231. After the light a1 is incident on the upper surface (the surface facing the back cover 210) of the first decorative coating 231, it is reflected into the eye, so that the user can see the pattern presented by the first decorative coating 231 through the transparent back cover 210, thereby improving the aesthetic appearance of the back cover 210.

[0139] FIG. 4 shows the shell assembly 200 obtained by directly bonding the camera decoration part 220 to the outer surface of the back cover 210 through the back adhesive 240. In some cases, the refractive index difference between the camera decoration part 220 and the back adhesive 240, between the back adhesive 240 and the back cover 210, and between the back cover 210 and the first decorative coating 231 is large, so that the light a3, the light a2, and the light a1 are reflected into the eye after being incident on the upper surface (the surface facing away from the back cover 210) of the back adhesive 240, the upper surface (i.e., the outer surface of the back cover 210) of the back cover 210, and the upper surface of the first decorative coating 231, respectively.

[0140] It can be seen that, due to the large difference in refractive index between the camera decoration piece 220 and the back adhesive 240, between the back adhesive 240 and the back cover 210, and between the back cover 210 and the first decorative coating 231, the light a3, the light a2 and the light a1 are reflected into the human eye at three positions with different depths, so that the camera decoration piece 220 and the back cover 210 appear to be a multi-layer structure in vision, the camera decoration piece 220 appears to be conspicuous on the back cover 210, and cannot present an integrated effect with the back cover 210, thereby resulting in poor appearance delicacy of the shell assembly 200.

[0141] It should be noted that FIG. 4 is only illustrative. In a specific implementation process, the shell assembly 200 assembled by the non-integrated camera decoration piece 220 and the back cover 210 will also exist the case that the light is reflected at the interface of different positions due to the difference in refractive index of the materials of other structures, such as the reflection of the light a9 caused by the difference in refractive index between the camera decoration piece 220 and the second decorative coating 232, and the reflection of the light a10 caused by the difference in refractive index between the back cover 210 and the second decorative coating 232, which will not be described in detail here and can be understood with reference to FIG. 4.

[0142] Secondly, the camera decoration piece 220 of the integrated structure decoration piece is illustratively described in combination with FIG. 5.

[0143] As shown in FIG. 5, FIG. 5 is a partial structure schematic diagram of the camera decoration piece 220 involved in the device 10 with the shell assembly shown in FIG. 1 provided in the related art. Different from the camera decoration piece 220 shown in FIG. 3 and FIG. 4, the camera decoration piece 220 shown in FIG. 5 is an integrated structure decoration piece.

[0144] The integrated structure decoration piece refers to the camera decoration piece 220 and the back cover 210 included in the shell assembly 200 being an integrally formed structure, without the need for reprocessing to fix the camera decoration piece 220 on the back cover 210. In the figure, the camera decoration piece 220 is shown as protruding from the back cover 210, but is an integrally formed structure with the back cover 210.

[0145] It can be understood that the integrally formed camera decoration piece 220 and the back cover 210 naturally present an integrated effect in vision due to the absence of the problem of the difference in refractive index of the materials. However, although the integrally formed camera decoration piece 220 and the back cover 210 can present an integrated effect, the integrated structure decoration piece has high requirements on the processing technology, resulting in high manufacturing cost, and is especially not suitable for application and promotion in low-end products.

[0146] It should be noted that FIGS. 3-5 take the camera decoration 220 disposed on the back cover 210 of the mobile phone 10 as an example to illustrate the visual abruptness problem of the appearance component and the solution that can solve the visual abruptness problem.

[0147] In the implementation process, the appearance component with the visual abruptness problem is not limited to the camera decoration 220 disposed on the back cover 210 of the mobile phone 10, but can also be other independently formed structural components disposed on the shell, such as the LOGO component (e.g., a large nameplate structured LOGO component) mentioned above for playing a LOGO identification role. Since these appearance components and the shell are two independently formed structural components, they can also visually appear very abrupt and cannot present a seamless effect with the back cover.

[0148] Based on this, the embodiment of the present application provides a shell assembly applied to a device with a shell assembly, such as the mobile phone 10 shown in FIGS. 1 and 2. The shell assembly includes a transparent shell, a transparent adhesive, and a transparent appearance component. The transparent appearance component is bonded to the transparent shell through the transparent adhesive. Among them, the first refractive index difference between the transparent appearance component and the transparent adhesive is less than or equal to 0.3; the second refractive index difference between the transparent shell and the transparent adhesive is less than or equal to 0.3.

[0149] It should be noted that in the shell assembly, when the first refractive index difference is less than 0.3 and the second refractive index difference is less than or equal to 0.3, the first refractive index difference and the second refractive index difference are not large, and for light, the transparent appearance component, the transparent adhesive, and the transparent shell can be regarded as a whole transparent structural component. The light is not easy to reflect between the transparent appearance component, the transparent adhesive, and the transparent shell, but is reflected at the interface that can reflect after passing through the transparent appearance component, the transparent adhesive, and the transparent shell. That is, the light incident to the transparent appearance component, the transparent adhesive, and the transparent shell is basically reflected into the human eye at the same interface, which makes the independently formed transparent appearance component and the transparent shell visually present a seamless effect, thereby making the shell assembly more delicate, and further improving the beauty of the device with the shell assembly.

[0150] In addition, since the shell assembly still uses independently formed appearance components and shells to present a seamless effect, compared with integrally formed appearance components and shells, it has a lower manufacturing cost and can be applied and popularized in mid-low-end products.

[0151] The device with the shell assembly to which the shell assembly provided by the embodiment of the present application is applied can be a mobile phone, a tablet computer, a notebook computer, a display cabinet, or other electronic devices or non-electronic devices with an integrated appearance requirement. The embodiment of the present application does not specially limit the specific form of the device with the shell assembly.

[0152] The shell assembly 200 provided by the embodiment of the present application will be described below in combination with FIGS. 6-18.

[0153] Exemplarily, in combination with FIGS. 6 and 7, FIG. 6 is a partial structural exploded schematic view of a shell assembly 200 provided by an embodiment of the present application, which can be understood as a schematic view of the partial structure of the shell assembly 200 in FIG. 2 (only the camera decoration 220 and the back cover 210 are shown) exploded along the Z-axis direction; FIG. 7 is a cross-sectional schematic view I of the shell assembly 200 shown in FIG. 2 along the section line A-A. In order to distinguish, different structures are represented by different filling patterns in FIG. 7.

[0154] The shell assembly 200 includes a transparent shell 210, a transparent appearance member 220, and a transparent adhesive 250. The transparent appearance member 220 is bonded to the transparent shell 210 by the transparent adhesive 250.

[0155] The transparent shell 210 refers to a transparent structural member for protecting internal functional components while also serving as a device appearance surface, and the transparent appearance member 220 refers to a transparent structural member capable of affecting the appearance of the shell assembly 200.

[0156] In combination with the definition of transparency in the foregoing technical term section, the light transmittance of the transparent shell 210 can be greater than or equal to (i.e., higher than) 80%; the light transmittance of the transparent appearance member 220 can be greater than or equal to (i.e., higher than) 80%. Alternatively, the light transmittance of the transparent shell 210 can be greater than or equal to 90%; the light transmittance of the transparent appearance member 220 can be greater than or equal to 90%. For example, the light transmittance of the transparent shell 210 is 95%, and the light transmittance of the transparent appearance member 220 can be 94%. It should be noted that the light transmittance of the transparent shell 210 and the transparent appearance member 220 can be the same or different.

[0157] It should be noted that in the case where the light transmittance is higher than 80%, the shell assembly 200 assembled by the transparent shell 210 and the transparent appearance member 220 has an integration requirement. In the case where the light transmittance is lower than 80%, the shell is considered as an opaque shell in the embodiment of the present application, and the appearance member is considered as an opaque appearance member in the embodiment of the present application. The shell assembly assembled by the opaque shell and the opaque appearance member has no integration requirement due to the poor light transmittance.

[0158] The transparent colloid 250 is a transparent structure with adhesion. In practice, the transparent colloid 250 can be an optical adhesive. In combination with the definition of transparency in the foregoing technical terms section, the light transmittance of the transparent colloid 250 can be greater than or equal to (i.e. higher than) 80%. Alternatively, the light transmittance of the transparent colloid 250 can be greater than or equal to 90%. For example, the light transmittance of the transparent colloid 250 can be 95%. The transparent colloid 250 with a light transmittance higher than 80% is used to bond the transparent housing 210 and the transparent appearance member 220 with a light transmittance higher than 80%, thereby presenting a more integrated appearance.

[0159] The embodiments shown in FIGS. 6 and 7 are described by taking the transparent housing 210 as the back cover 210 in FIG. 2 and the transparent appearance member 220 as the camera decoration 220 in FIG. 2. The concepts of the back cover 210 and the camera decoration 220 can be referred to the related description in FIG. 2.

[0160] It can be understood that, in the case where the transparent housing 210 is the back cover 210 in FIG. 2 and the transparent appearance member 220 is the camera decoration 220 in FIG. 2, both the back cover 210 and the camera decoration 220 in FIG. 2 are transparent structures. Of course, in some other embodiments, the transparent housing 210 and the transparent appearance member 220 can also be other structures. For example, as shown in FIG. 8, the transparent appearance member 220 can also be a LOGO member 270 (shown as a large nameplate LOGO member); and the transparent housing 210 can also be other housings on which a LOGO member can be arranged, which are not specially limited in the embodiments of the present application.

[0161] As shown in FIGS. 6 and 7, the back cover 210 is provided with a mounting opening 211. The mounting opening 211 can be used for the camera module 400 shown in FIG. 2 to pass through and extend to the outside of the back cover 210, so as to protrude from the back cover 210. In this way, the mounting space of the camera module 400 shown in FIG. 2 in the Z-axis direction can be increased. Of course, the camera module 400 can also not protrude from the back cover 210.

[0162] As shown in FIG. 7, the camera decoration 220 is bonded to the back cover 210 by the transparent colloid 250 and covers the mounting opening 211. For example, the camera decoration 220 can be bonded to the outer surface of the back cover 210 by the transparent colloid 250, or can be bonded to the back cover 210 by the transparent colloid 250 accommodated in the groove provided on the outer surface of the back cover 210. The subsequent embodiments are described by taking the former as an example.

[0163] It can be understood that the outer surface of the back cover 210 is the appearance surface of the back cover 210, that is, the surface of the back cover 210 facing away from the display screen 120 in FIG. 2. The surface opposite to the outer surface of the back cover 210 is the inner surface of the back cover 210, that is, the surface of the back cover 210 facing toward the display screen 120 in FIG. 2.

[0164] In order to improve the waterproof performance of the shell assembly 200, the transparent adhesive 250 is optionally adhered to the outer surface of the back cover 210 around the mounting port 211, as shown in FIG. 6. As shown in FIG. 6, the transparent adhesive 250 can be adhered to the outer surface of the back cover 210 around the mounting port 211. In specific implementation, the transparent adhesive 250 is adhered to the outer surface of the back cover 210 around the mounting port 211 to form a closed ring. The size of the ring can be large or small, and can be set according to actual needs.

[0165] In this way, the camera decoration 220 is adhered to the outer surface of the back cover 210 around the mounting port 211 by the transparent adhesive 250, so as to surround the mounting port 211, thereby sealing the gap between the camera decoration 220 and the back cover 210, reducing the risk of external liquid entering the shell assembly 200 through the mounting port 211, and improving the waterproof performance of the shell assembly 200.

[0166] In some embodiments, as shown in FIG. 7, the inner surface of the back cover 210 is further provided with a decorative coating 230, so as to present a pattern effect through the transparent back cover 210, thereby improving the appearance of the shell assembly 200. Of course, in other embodiments, the inner surface of the back cover 210 can also not be provided with the decorative coating 230, which is not limited in the embodiments of the present application.

[0167] In order to further improve the appearance of the shell assembly 200, the difference between the refractive index of the back cover 210 and the refractive index of the transparent adhesive 250 (which is temporarily referred to as the first refractive index difference in the embodiments of the present application) is less than or equal to 0.3 in the shell assembly 200 shown in FIGS. 6 and 7; and the difference between the refractive index of the camera decoration 220 and the refractive index of the transparent adhesive 250 (which is temporarily referred to as the second refractive index difference in the embodiments of the present application) is less than or equal to 0.3.

[0168] It should be noted that in the embodiments of the present application, the difference in refractive index between two components refers to the absolute value of the difference between the refractive indexes of the two components. For example, the difference in refractive index between the back cover 210 and the transparent adhesive 250 refers to the absolute value of the difference between the refractive index of the back cover 210 and the refractive index of the transparent adhesive 250. Taking the refractive index of the back cover 210 as 1.49 and the refractive index of the transparent adhesive 250 as 1.55 as an example, the difference in refractive index between the back cover 210 and the transparent adhesive 250 is 0.06.

[0169] In specific implementation, the first refractive index difference and the second refractive index difference can be the same or different. For example, the first refractive index difference is 0.1, and the second refractive index difference is 0.2.

[0170] In the shell assembly 200 shown in FIG. 6 and FIG. 7, the first refractive index difference between the back cover 210 and the transparent gel 250 is less than or equal to 0.3, and the second refractive index difference between the camera decoration 220 and the transparent gel 250 is less than or equal to 0.3, so the refractive index difference between the back cover 210 and the transparent gel 250 and the refractive index difference between the transparent gel 250 and the camera decoration 220 are not large or even the same.

[0171] In this case, the back cover 210, the transparent gel 250, and the camera decoration 220 can be regarded as a whole transparent structure for light. As shown in the light propagation path in FIG. 7, the light a4 incident on the back cover 210 is reflected after passing through the back cover 210 to the decoration coating 230; the light a5 incident on the transparent gel 250 is reflected after passing through the transparent gel 250, the back cover 210, and the decoration coating 230 in turn; and the light a6 incident on the camera decoration 220 is reflected after passing through the camera decoration 220, the transparent gel 250, and the back cover 210 in turn. It can be seen that the light a4, the light a5, and the light a6 are reflected into the human eye at the same interface M (i.e., the interface M between the back cover 210 and the decoration coating 230 in FIG. 7), which makes the camera decoration 220 and the back cover 210 that are independently formed appear visually integrated, thereby making the shell assembly 200 more delicate and improving the appearance of the device having the shell assembly 200. It should be noted that even if there is reflected light at the interface between the camera decoration 220 and the transparent gel 250, the interface between the transparent gel 250 and the back cover 210, and the interface between the back cover 210 and the decoration coating 230, the amount of reflected light is extremely small and does not cause the shell assembly 200 to appear to have multiple layers in vision.

[0172] In some embodiments, the first refractive index difference is less than or equal to 0.25. Further, the first refractive index difference is less than or equal to 0.2. In the implementation process, the smaller the first refractive index difference is, the better.

[0173] In some embodiments, the second refractive index difference is less than or equal to 0.25. Further, the second refractive index difference is less than or equal to 0.2. In the implementation process, the smaller the second refractive index difference is, the better.

[0174] It should be noted that the smaller the first refractive index difference and the second refractive index difference are, the closer the refractive index of the back cover 210 to the refractive index of the transparent gel 250 and the closer the refractive index of the camera decoration 220 to the refractive index of the transparent gel 250, the less likely to reflect, and the better the integration effect.

[0175] In addition, the shell assembly 200 still presents an integrated effect by using the separately formed back cover 210 and camera decoration 220, and has lower manufacturing cost compared to the integrally formed camera decoration 220 and back cover 210, and can be applied and promoted in mid-low-end products.

[0176] In addition, compared to the shell assembly 200 shown in FIG. 4, the light a3 incident to the camera decoration 220 can reach the decoration coating 230, the camera decoration 220 and the back cover 210 can share the same decoration coating 230 for decoration, and the camera decoration 220 does not need to additionally set a separate decoration coating (such as the second decoration coating 232 in FIG. 4), which is beneficial to save cost.

[0177] In some design manners of the present application, please continue to refer to FIG. 7, in the shell assembly 200 shown in FIG. 7, the materials of the back cover 210 and the camera decoration 220 can be plastic.

[0178] It should be noted that due to the manufacturing cost, the back cover 210 and the camera decoration 220 of the current mid-low-end products are generally made of plastic. In this case, the shell assembly 200 shown in FIG. 7 can be applied in mid-low-end products, and this embodiment provides an optional application scenario for the shell assembly 200 shown in FIG. 7.

[0179] Exemplarily, the back cover 210 and the camera decoration 220 can include but are not limited to any one of plastic such as acrylic (refractive index of 1.49-1.50), polycarbonate (PC, refractive index of about 1.59), polyethylene glycol terephthalate (also known as polyester resin, PET, refractive index of about 1.52), etc.

[0180] In this case, exemplarily, the transparent adhesive 250 can include but is not limited to any one of materials such as light-cured acrylic adhesive (refractive index of 1.49-1.50), acrylic resin (refractive index of 1.40-1.50), polyester resin (refractive index of about 1.50), silicone resin (refractive index of 1.40-1.57), etc.

[0181] The refractive index of the plastic and the transparent adhesive 250 provided in this example is between 1.4 and 1.6, which satisfies the condition that the refractive index difference is less than or equal to 0.2, and can make the shell assembly 200 visually present an integrated appearance effect.

[0182] In another design manner of the present application, please continue to refer to FIG. 7, in the shell assembly 200 shown in FIG. 7, the materials of the back cover 210 and the camera decoration 220 can also be glass.

[0183] The glass has a crystal-clear appearance, and can improve the delicacy of the shell assembly 200 due to its fashion, technology, hardness, and resistance to scratching and discoloration.

[0184] It should be noted that the back cover 210 and the camera decoration piece 220 of the middle and high-end products are usually made of glass due to the more complex processing and manufacturing process of glass. This embodiment provides another alternative application scenario for the shell assembly 200 shown in FIGS. 6 and 7.

[0185] The refractive index of glass is usually 1.5, which varies with the material and type.

[0186] In this case, for example, when selecting the transparent adhesive 250, the transparent adhesive 250 can include, but is not limited to, any one of optical curing acrylic glue (refractive index of 1.49-1.50), polyester resin (refractive index of about 1.50), and the like. This example also makes the refractive index difference less than or equal to 0.2, so that the shell assembly 200 visually presents an integrated appearance effect.

[0187] In some embodiments of the present application, in order to further improve the aesthetics of the shell assembly 200, please continue to refer to FIG. 7, the transparent adhesive 250 is aligned with the camera decoration piece 220 in the Z-axis direction.

[0188] From the perspective of projection, the transparent adhesive 250 is aligned with the camera decoration piece 220 in the Z-axis direction, that is, the orthogonal projection of the transparent adhesive 250 in the Z-axis direction and the orthogonal projection of the camera decoration piece 220 in the Z-axis direction are exactly coincident with the orthogonal projection of the transparent adhesive 250 in the Z-axis direction.

[0189] In some related technologies, as shown in FIG. 9, FIG. 9 is another cross-sectional structure schematic diagram obtained by cutting along the cutting line B-B shown in FIG. 3. Only the structure related to the shell assembly 200 is shown, and other structures of the mobile phone 10 are not shown.

[0190] In this cross-sectional structure, the camera decoration piece 220 and the back adhesive 240 are not aligned in the Z-axis direction, and the back adhesive 240 is recessed on the side surface of the camera decoration piece 220. It can be understood that due to the thickness of the back adhesive 240, there is a gap W between the camera decoration piece 220 and the back cover 210.

[0191] It can be understood that the gap W is filled with air with a refractive index of 1, which causes the light a7 to be reflected when it is incident on the interface between the camera decoration 220 and the gap W, and the light a8 to be reflected when it is incident on the interface between the gap W and the back cover 210. The light a7 and the light a8 are reflected at the two interfaces with different depths, so that the camera decoration 220 and the back cover 210 are layered. It can be seen that the presence of the gap W causes the camera decoration 220 and the back cover 210 to be layered and unable to present an integrated effect, resulting in poor appearance delicacy of the shell assembly 200.

[0192] In the shell assembly 200 shown in FIG. 7, the transparent adhesive 250 is aligned with the camera decoration 220 in the Z-axis direction, and the camera decoration 220 and the back cover 210 are filled with the transparent adhesive 250. There is no gap W shown in FIG. 9, and there is no situation that the gap W causes the camera decoration 220 and the back cover 210 to be layered. Compared with FIG. 9, the appearance delicacy of the shell assembly 200 is better.

[0193] In some other related technologies, as shown in FIG. 10, which is another cross-sectional structure schematic diagram obtained by cutting along the cutting line B-B shown in FIG. 3. Only the structures involved in the shell assembly 200 are shown, and other structures of the mobile phone 10 are not shown.

[0194] In this cross-sectional structure, the inner surface of the back cover 210 is provided with a first decorative coating 231. The light a9 is reflected into the eye after being incident on the upper surface of the first decorative coating 231, so that the user can see the pattern presented by the first decorative coating 231 through the transparent back cover 210, thereby improving the appearance of the back cover 210.

[0195] In order to reduce the influence of the gap W shown in FIG. 9 on the appearance of the shell assembly 200, a mounting groove 210a is formed on the upper surface of the back cover 210 by a computer numerical control machine tool (CNC). In this way, the back adhesive 240 can be accommodated in the mounting groove 210a to reduce the gap between the camera decoration 220 and the back cover 210, and at the same time, the protrusion height of the camera decoration 220 relative to the back cover 210 in the Z-axis direction can be reduced.

[0196] Part of the back adhesive 240 is accommodated in the mounting groove 210a, and part of the back adhesive 240 protrudes out of the outer surface of the back cover 210, so that the back adhesive 240 and the camera decoration 220 can be firmly bonded. Obviously, part of the back adhesive 240 protruding out of the outer surface of the back cover 210 will cause the gap between the camera decoration 220 and the back cover 210 to still exist, only the gap is smaller, and therefore, the problem that the gap causes the camera decoration 220 and the back cover 210 to be layered still exists.

[0197] However, in FIG. 10, to avoid the rough groove bottom of the mounting groove 210a being affected by the appearance of the gap and the light entering the gap, and the back adhesive 240 being affected by the appearance, and other factors, the back adhesive 240 is usually set as a non-transparent back adhesive 240 (such as black adhesive). And, to avoid the non-transparent back adhesive 240 being affected by the appearance, the inner surface of the camera decoration piece 220 is also sprayed with a second decorative coating 232, which blocks the light entering side of the non-transparent back adhesive 240, so that the light a10 is reflected from the upper surface of the second decorative coating 232 into the human eye, instead of being reflected from the non-transparent back adhesive 240 into the human eye, so that the user can see the pattern presented by the second decorative coating 232 through the transparent camera decoration piece 220, and the appearance of the camera decoration piece 220 is improved.

[0198] However, due to the different position distributions of the first decorative coating 231 and the second decorative coating 232 in the Z-axis direction, the light a9 and the light a10 are reflected into the human eye at two positions with different depths, so that the camera decoration piece 220 and the back cover 210 visually present a multi-layer structure, the camera decoration piece 220 appears to be protruding on the back cover 210, and cannot present an integrated effect with the back cover 210, so that the appearance delicacy of the shell assembly 200 is poor. That is, the setting of the second decorative coating 232 also introduces the reflection of the light a10 and the light a9 into the human eye at different interfaces, thereby causing the problem of the camera decoration piece 220 and the back cover 210 being layered.

[0199] Compared with FIG. 10, in FIG. 7, the camera decoration piece 220 is directly bonded with the back cover 210 through the transparent adhesive 250, and the bottom surface of the camera decoration piece 220 is not provided with the second decorative coating 232, but shares the decorative coating 230 to improve the appearance, so that the problem of the camera decoration piece 220 and the back cover 210 being layered caused by the second decorative coating 232 in FIG. 10 is avoided, and the appearance delicacy of the shell assembly 200 is improved.

[0200] In other embodiments, as shown in FIG. 11, the transparent adhesive 250 can also protrude from the side surface of the camera decoration piece 220. From the perspective of projection, the orthographic projection of the camera decoration piece 220 in the Z-axis direction falls within the orthographic projection of the transparent adhesive 250 in the Z-axis direction. In this case, the gap W shown in FIG. 9 no longer exists between the camera decoration piece 220 and the back cover 210.

[0201] As shown in the light ray propagation path shown in FIG. 11, when the light ray a11 is incident on the area of the transparent gel 250 beyond the side surface of the camera decoration 220, the light ray a11 is reflected after sequentially passing through the transparent gel 250, the back cover 210 and the decoration coating 230 due to the second refractive index difference between the transparent gel 250 and the back cover 210 being less than or equal to 0.3. It can be seen that the light ray a11 is still reflected at the interface M, which does not cause the camera decoration 220 and the back cover 210 to be delaminated, and can also make the camera decoration 220 and the back cover 210 appear to be integrated, so that the appearance of the shell assembly 200 is better. Compared with FIG. 7, the area of the transparent gel 250 protruding from the side surface of the camera decoration 220 is exposed in FIG. 11, and the appearance of the shell assembly 200 is not as good as that shown in FIG. 7. The beautification scheme of the area of the transparent gel 250 protruding from the side surface of the camera decoration 220 will be introduced later in the content related to FIG. 16 and FIG. 17.

[0202] Please continue to refer to FIG. 10. Before the camera decoration 220 and the back cover 210 are assembled, the top surface of the camera decoration 220 and the outer surface of the back cover 210 are respectively formed with the hardened liquid layer M1 and the hardened liquid layer M2, but the side surface of the camera decoration 220 does not have a hardened liquid layer.

[0203] It can be understood that after the camera decoration 220 and the back cover 210 are assembled, the hardened liquid layer M1 and the hardened liquid layer M2 are spaced apart, the boundary line between the camera decoration 220 and the back cover 210 is exposed, and the shell assembly 200 cannot present an integrated outer surface, thereby existing the problem of poor appearance delicacy.

[0204] In order to further improve the appearance of the shell assembly 200, the embodiments of the present application also provide the embodiments shown in FIG. 12 and FIG. 14 on the basis of FIG. 7. Of course, FIG. 12 and FIG. 14 can also be implemented on the basis of other embodiments provided by the embodiments of the present application. Please refer to the embodiments of FIG. 12 and FIG. 14, which will not be described here.

[0205] Exemplarily, please refer to FIG. 12. FIG. 12 is a cross-sectional view III of the shell assembly 200 shown in FIG. 2 along the cutting line A-A. Different from FIG. 7, FIG. 12 adds a transparent hardened liquid layer 260 on the basis of FIG. 7. The added transparent hardened liquid layer 260 will be mainly described below, and other contents can be adaptively referred to the description of the related contents in FIG. 7, which will not be described here.

[0206] As shown in FIG. 12, the shell assembly 200 can further include a transparent hardening liquid layer 260. The transparent hardening liquid layer 260 extends from the top surface of the camera decoration 220 to the outer surface of the back cover 210, but does not extend to the edge of the outer surface of the back cover 210, so as to cover the outer surface of the camera decoration 220 and the part of the outer surface of the back cover 210 not occupied by the camera decoration 220.

[0207] It can be understood that, in the embodiments of the present application, the top surface of the camera decoration 220 also refers to the surface of the camera decoration 220 facing away from the back cover 210, i.e., the upper surface of the camera decoration 220 shown in the figure. The surface opposite to the top surface of the camera decoration 220 is the bottom surface of the camera decoration 220, i.e., the lower surface of the camera decoration 220 shown in the figure, also referred to as the inner surface of the camera decoration 220.

[0208] The surface of the camera decoration 220 between the top surface and the bottom surface is the side surface of the camera decoration 220, and both of the left and right surfaces of the camera decoration 220 arranged in the Y-axis direction are the side surfaces of the camera decoration 220. In addition, the two surfaces of the camera decoration 220 arranged in the X-axis direction are also the side surfaces of the camera decoration 220.

[0209] The outer surface of the camera decoration 220 refers to the appearance surface of the camera decoration 220. In FIG. 12, the outer surface of the camera decoration 220 includes the top surface and the side surface of the camera decoration 220. Subsequently, the outer surface of the camera decoration 220 is taken as an example for illustration, which includes the top surface and the side surface of the camera decoration 220. Based on this, according to the definition of coverage in the foregoing technical terms section, the transparent hardening liquid layer 260 covers the outer surface of the camera decoration 220, specifically, the transparent hardening liquid layer 260 covers the top surface and the side surface of the camera decoration 220. The area of the outer surface of the camera decoration 220 where the transparent hardening liquid layer 260 is distributed includes the area of the top surface and the side surface of the camera decoration 220 where the transparent hardening liquid layer 260 is distributed.

[0210] Of course, in some other embodiments, the outer surface of the camera decoration 220 at least includes the top surface of the camera decoration 220. For example, in the case where the camera decoration 220 is flush with the back cover 210, the outer surface of the camera decoration 220 includes the top surface of the camera decoration 220. For another example, in the case where the camera decoration 220 is partially accommodated in the groove provided on the outer surface of the back cover 210, the outer surface of the camera decoration 220 includes the top surface and part of the side surface of the camera decoration 220. In this case, the transparent hardening liquid layer 260 covers the outer surface of the camera decoration 220, and the meaning of the area of the outer surface of the camera decoration 220 where the transparent hardening liquid layer 260 is distributed is adaptively understood.

[0211] The part of the area of the outer surface of the back cover 210 not occupied by the camera decoration piece 220 refers to part of the area of the outer surface of the back cover 210 not occupied by the camera decoration piece 220. The area of the outer surface of the back cover 210 directly opposite the camera decoration piece 220 can be understood as the area of the outer surface of the back cover 210 occupied by the camera decoration piece 220, and vice versa. The area of the outer surface of the back cover 210 not directly opposite the camera decoration piece 220 is the area of the outer surface of the back cover 210 not occupied by the camera decoration piece 220.

[0212] The part of the area of the outer surface of the back cover not occupied by the camera decoration piece 220 surrounds the camera decoration piece 220 and is adjacent to the camera decoration piece 220. This means that the transparent hardening liquid layer 260 does not cover any area of the outer surface of the back cover not occupied by the camera decoration piece 220, but covers a ring-shaped area adjacent to the camera decoration piece 220 on the outer surface of the back cover, and this ring-shaped area is part of the area of the outer surface of the back cover not occupied by the camera decoration piece 220. For ease of description, this part of the area is referred to as the adjacent area in the embodiments of the present application. It can be understood that the adjacent area can be large or small. Based on this, in combination with the definition of coverage in the foregoing technical terms section, it can be known that the transparent hardening liquid layer 260 covers part of the area of the outer surface of the back cover not occupied by the camera decoration piece 220, specifically: the transparent hardening liquid layer 260 covers the adjacent area of the outer surface of the back cover.

[0213] From the perspective of projection, the transparent hardening liquid layer 260 extends from the top surface of the camera decoration piece 220 to the outer surface of the back cover 210 to cover the outer surface of the camera decoration piece 220 and part of the area of the outer surface of the back cover 210 not occupied by the camera decoration piece 220. This is manifested in that: the orthographic projection of the camera decoration piece 220 on the back cover 210 falls within the orthographic projection of the transparent hardening liquid layer 260 on the back cover 210, and the orthographic projection of the transparent hardening liquid layer 260 on the back cover 210 falls within the edge of the outer surface of the back cover 210.

[0214] Please refer to FIG. 13 for a plane view of the Z-XY plane of the shell assembly 200 shown in FIG. 12, as viewed from the perspective of the reverse direction of the Z axis.

[0215] It can be understood that the area surrounded by the edge line L1 of the camera decoration piece 220 in the Z-XY plane (i.e., the edge line observed from the perspective of the reverse direction of the Z axis) can be understood as the orthographic projection of the camera decoration piece 220 on the back cover 210.

[0216] The edge line L2 of the back cover 210 in the Z-XY plane (i.e., the edge line L2 of the back cover 210 observed from the reverse direction of the Z axis) can be understood as the edge of the outer surface of the back cover 210 (also referred to as the edge line of the outer surface of the back cover 210).

[0217] Since the transparent hardening liquid layer 260 extends to the outer surface of the back cover 210 but does not extend to the edge of the outer surface of the back cover 210, the edge line of the orthographic projection of the transparent hardening liquid layer 260 on the back cover 210 is within the edge line L2 of the back cover 210 in the Z-XY plane and is outside the edge line L1.

[0218] The area circled by the dashed line S1 shown in FIG. 13 exemplarily gives an example of the orthographic projection of the transparent hardening liquid layer 260 on the back cover 210. The dashed line S1 can be understood as the edge line of the orthographic projection of the transparent hardening liquid layer 260 on the back cover 210, and can also be understood as the edge line of the transparent hardening liquid layer 260 observed from the perspective of the direction opposite to the Z axis. The area between the edge line L1 and the edge line L2 can be understood as the area of the outer surface of the back cover 210 that is not occupied by the camera decoration piece 220. The area between the edge line L1 and the dashed line S1 can be understood as the partial area of the outer surface of the back cover 210 covered by the transparent hardening liquid layer 260, i.e., the abutment area. It can be seen that the abutment area is part of the area of the outer surface of the back cover 210 that is not occupied by the camera decoration piece 220.

[0219] As can be seen from FIG. 13, the area of the camera decoration piece 220 enclosed by the edge line L1 in the Z-XY plane falls within the area circled by the dashed line S1. That is, the orthographic projection of the camera decoration piece 220 on the back cover 210 falls within the orthographic projection of the transparent hardening liquid layer 260 on the back cover 210, thereby covering the outer surface of the camera decoration piece 220. The area of the transparent hardening liquid layer 260 enclosed by the edge line S1 in the Z-XY plane falls within the area circled by the edge line L2. That is, the orthographic projection of the transparent hardening liquid layer 260 on the back cover 210 falls within the edge of the back cover 210, thereby covering the partial area of the outer surface of the back cover 210 that is not occupied by the camera decoration piece 220.

[0220] As can be seen from the above, in the shell assembly 200 shown in FIGS. 12 and 13, the transparent hardening liquid layer 260 extends from the top surface of the camera decoration piece 220 to the outer surface of the back cover 210. This indicates that the transparent hardening liquid layer 260 not only covers the outer surface of the camera decoration piece 220, but also continues to extend to the outer surface of the back cover 210, forming a continuous and integral structure to cover the area of the outer surface of the back cover 210 adjacent to the camera decoration piece 220.

[0221] In this way, compared with the shell assembly 200 shown in FIG. 7, in FIGS. 12 and 13, when the transparent hardening liquid layer 260 extends from the top surface of the camera decoration piece 220 to the outer surface of the back cover 210, the continuous and integral structure of the transparent hardening liquid layer 260 crosses the edge line L1 of the camera decoration piece 220 in the Z-XY plane, thereby shielding the boundary line between the camera decoration piece 220 and the back cover 210, so that the shell assembly 200 presents an integral appearance.

[0222] In addition, the transparent hardened liquid layer 260 can also perform secondary sealing on the gap possibly existing between the camera decoration piece 220 and the back cover 210, so as to reduce the risk of external liquid entering the inside of the shell assembly 200 from between the camera decoration piece 220 and the back cover 210, thereby improving the waterproof performance of the shell assembly 200, especially for the shell assembly 200 with a gap between the back cover 210 and the camera decoration piece 220.

[0223] In addition, please continue to refer to FIG. 12, the difference between the refractive index of the transparent hardened liquid layer 260 on the outer surface of the camera decoration piece 220 and the refractive index of the camera decoration piece 220 (which will be referred to as the third refractive index difference in the embodiments of the present application) is less than or equal to 0.3; the difference between the refractive index of the transparent hardened liquid layer 260 on the outer surface of the back cover 210 and the refractive index of the back cover 210 (which will be referred to as the fourth refractive index difference in the embodiments of the present application) is less than or equal to 0.3.

[0224] In combination with the foregoing definition of the outer surface of the camera decoration piece 220, the transparent hardened liquid layer 260 on the outer surface of the camera decoration piece 220, i.e., the transparent hardened liquid layer 260 on the top surface and the side surface of the camera decoration piece 220.

[0225] In the implementation process, the third refractive index difference and the fourth refractive index difference can be the same or different. For example, the third refractive index difference is 0.1; and the fourth refractive index difference is 0.2.

[0226] Exemplarily, based on the foregoing material selection examples of the camera decoration piece 220 and the back cover 210, the material of the transparent hardened liquid layer 260 can include acrylic resin (with a refractive index of 1.40-1.50).

[0227] It can be understood that, based on the similar principles of the foregoing first refractive index difference and second refractive index difference, the arrangement of the transparent hardened liquid layer 260 can also make the transparent hardened liquid layer 260 and the camera decoration piece 220 and the back cover 210 visually present an appearance effect of being integrated as one, so as to make the shell assembly 200 more delicate, thereby improving the aesthetic appearance of the device with the shell assembly 200.

[0228] In some embodiments, the third refractive index difference is less than or equal to 0.25. Further, the third refractive index difference is less than or equal to 0.2. In the implementation process, the smaller the third refractive index difference is, the better.

[0229] In some embodiments, the fourth refractive index difference is less than or equal to 0.25. Further, the fourth refractive index difference is less than or equal to 0.2. In the implementation process, the smaller the fourth refractive index difference is, the better.

[0230] Based on similar reasons of the first refractive index difference and the second refractive index difference, the smaller the third refractive index difference and the fourth refractive index difference are, the closer the refractive index of the transparent hardening liquid layer 260 on the outer surface of the camera decoration piece 220 to the refractive index of the camera decoration piece 220, and the closer the refractive index of the transparent hardening liquid layer 260 on the outer surface of the back cover 210 to the refractive index of the back cover 210 are, the better the integration effect is.

[0231] In the embodiments shown in FIG. 12 and FIG. 13, the transparent hardening liquid layer 260 extending to the outer surface of the back cover 210 does not extend to the edge of the outer surface of the back cover 210. In some other embodiments, the transparent hardening liquid layer 260 can also extend to the edge of the outer surface of the back cover 210 on the outer surface of the back cover 210 to cover the area of the outer surface of the back cover 210 not occupied by the camera decoration piece 220. The following is exemplarily explained in combination with FIG. 14 and FIG. 15.

[0232] Exemplarily, refer to FIG. 14, which is a cross-sectional view of the shell assembly 200 shown in FIG. 2 along the cutting line A-A.

[0233] Different from FIG. 12, in the shell assembly 200 shown in FIG. 14, the transparent hardening liquid layer 260 also extends to the edge of the outer surface of the back cover 210 on the outer surface of the back cover 210 to cover the area of the outer surface of the back cover 210 not occupied by the camera decoration piece 220. That is, the transparent hardening liquid layer 260 in FIG. 14 extends from the top surface of the camera decoration piece 220 to the edge of the outer surface of the back cover 210 to cover the outer surface of the camera decoration piece 220 and the area of the outer surface of the back cover 210 not occupied by the camera decoration piece 220.

[0234] It should be noted that the edge of the outer surface of the back cover 210 can be understood as the edge line of the back cover 210 in the Z-XY plane, that is, the edge line of the back cover 210 observed in the negative direction of the Z axis.

[0235] From the perspective of projection, the transparent hardening liquid layer 260 extending from the top surface of the camera decoration piece 220 to the edge of the outer surface of the back cover 210 is manifested as that the edge line of the orthographic projection of the transparent hardening liquid layer 260 on the back cover 210 coincides with the edge line of the outer surface of the back cover 210, and the orthographic projection of the camera decoration piece 220 on the back cover 210 falls into the orthographic projection of the transparent hardening liquid layer 260 on the back cover 210.

[0236] Refer to FIG. 15 in combination, which is a plan view of the Z-XY plane of the shell assembly 200 shown in FIG. 14 observed from the perspective of the negative direction of the Z axis.

[0237] The edge line L1 and the edge line L2 can refer to the related description in FIG. 13. The area between the edge line L1 and the edge line L2 (including the position of the edge line L2 but excluding the position of the edge line L1) can be understood as the area of the outer surface of the back cover 210 that is not occupied by the camera decoration piece 220. It can be understood that, because the transparent hardening liquid layer 260 extends to the edge of the outer surface of the back cover 210, the edge line of the orthogonal projection of the transparent hardening liquid layer 260 on the back cover 210 is the edge line L2 of the back cover 210 in the Z-XY plane.

[0238] The area circled by the dashed line S2 exemplarily shows one example of the orthogonal projection of the transparent hardening liquid layer 260 on the back cover 210 shown in FIG. 14. The dashed line S2 can be understood as the edge line of the orthogonal projection of the transparent hardening liquid layer 260 on the back cover 210, and can also be understood as the edge line of the transparent hardening liquid layer 260 observed from the perspective of the negative direction of the Z axis.

[0239] As shown in FIG. 15, the area of the camera decoration piece 220 surrounded by the edge line L1 in the Z-XY plane falls within the area circled by the dashed line S2, that is, the orthogonal projection of the camera decoration piece 220 on the back cover 210 falls within the orthogonal projection of the transparent hardening liquid layer 260 on the back cover 210, thereby covering the outer surface of the camera decoration piece 220. Moreover, the dashed line S2 coincides with the edge line L2, indicating that the transparent hardening liquid layer 260 covers the area of the outer surface of the back cover 210 that is not occupied by the camera decoration piece 220.

[0240] It can be understood that, because the transparent hardening liquid layer 260 in FIGS. 14 and 15 also extends from the top surface of the camera decoration piece 220 to cover the outer surface of the back cover 210, the transparent hardening liquid layer 260 in FIG. 14 also has the technical effects of the transparent hardening liquid layer 260 in FIG. 12, which will not be described here.

[0241] In addition, in the shell assembly 200 shown in FIGS. 14 and 15, on the one hand, because the transparent hardening liquid layer 260 extends to the edge of the outer surface of the back cover 210, the boundary line between the transparent hardening liquid layer 260 and the back cover 210 also appears at the edge of the outer surface of the back cover 210, which is not easy to be observed from the appearance, and therefore, compared with the shell assembly 200 shown in FIGS. 12 and 13, the shell assembly 200 shown in FIGS. 14 and 15 can present a more integrated appearance; on the other hand, the outer surface of the shell assembly 200 is formed by the area of the outer surface of the back cover 210 that is not occupied by the camera decoration piece 220 and the outer surface of the camera decoration piece 220. In the case where the transparent hardening liquid layer 260 covers these two parts, it is equivalent to covering the entire outer surface of the shell assembly 200, which can improve the overall strength of the outer surface of the shell assembly 200, and is particularly suitable for the case where the back cover 210 and the camera decoration piece 220 are made of plastic.

[0242] It can be understood that the hardness of the plastic is lower than that of the glass, and therefore the effect of improving the surface strength can be achieved by the transparent hardening liquid layer 260. Of course, in the case that the back cover 210 and the camera decoration piece 220 are glass, the effect of improving the surface strength can also be achieved by setting the transparent hardening liquid layer 260.

[0243] It should be noted that in the case that the back cover 210 and the camera decoration piece 220 are glass, the surface of the back cover 210 and the camera decoration piece 220 can also be etched directly by the plasma exchange technology to form a structure for improving the surface strength of the outer surface of the shell assembly 200, instead of the transparent hardening liquid layer 260, to achieve the effect of improving the surface strength. The embodiments of the present application do not limit this. In this case, since the outer surface of the back cover 210 and the outer surface of the camera decoration piece 220 are not provided with the transparent hardening liquid layer 260 to shield the overflow area of the transparent gel 250, the transparent gel 250 is aligned with the camera decoration piece 220 in the Z-axis direction to avoid the transparent gel 250 from overflowing from the side of the camera decoration piece 220 to reduce the aesthetics of the shell assembly 200.

[0244] It should be noted that due to various factors such as process, the transparent gel 250 is prone to overflow from the side of the camera decoration piece 220, thereby affecting the aesthetics of the shell assembly 200. The following will be exemplarily described in conjunction with FIG. 16.

[0245] Please refer to FIG. 16, which is a schematic diagram of the overflow of the transparent gel 250 from the side of the camera decoration piece 220 provided by the embodiments of the present application. The area circled by the dashed line in the figure is the overflow area of the transparent gel 250. Obviously, such a shell assembly 200 is a defective product.

[0246] Based on this, the embodiments of the present application also provide the embodiment shown in FIG. 17 on the basis of FIG. 14. Of course, FIG. 17 can also be implemented on the basis of other embodiments provided by the embodiments of the present application. Please refer to the embodiment of FIG. 17, which will not be described here.

[0247] Exemplarily, please refer to FIG. 17, which is a cross-sectional schematic diagram of the shell assembly 200 shown in FIG. 2 along the cutting line A-A.

[0248] In the shell assembly 200 shown in FIG. 17, even if the transparent gel 250 has the overflow condition shown in FIG. 16, so that itself is not aligned with the camera decoration piece 220 in the Z-axis direction, due to the laying of the transparent hardening liquid layer 260, the overflow area (the area circled by the dashed line in the figure) of the transparent gel 250 can be covered, thereby reducing the influence of the overflow of the transparent gel 250 on the aesthetics of the shell assembly 200. In addition, it can be understood that the transparent hardening liquid layer 260 in FIG. 17 has the technical effects of the transparent hardening liquid layer 260 in FIG. 12 and FIG. 14, which will not be described here.

[0249] In the implementation, when the area of the transparent hardening liquid layer 260 corresponding to the overflow area of the transparent colloid 250 (i.e., the second hardening liquid area 262 of the subsequent substrate) is processed, the processing sequence is required to be after the transparent colloid 250, so that the transparent hardening liquid layer 260 can cover the overflow area of the transparent colloid 250. This will be described in detail in the subsequent process flow, and will not be described here.

[0250] Of course, in other embodiments, as shown in FIG. 7, the shell assembly 200 can also not include the transparent hardening liquid layer 260, which is not specially limited in the embodiments of the present application. In this case, the transparent colloid 250 is aligned with the camera decoration 220 in the Z-axis direction to avoid the transparent colloid 250 overflowing from the side of the camera decoration 220 to reduce the aesthetics of the shell assembly 200.

[0251] Obviously, compared with the embodiment shown in FIG. 17, in the shell assembly 200 shown in FIG. 7, the transparent colloid 250 needs to be aligned with the camera decoration 220 in the Z-axis direction, so the processing difficulty of the transparent colloid 250 is greater. Therefore, it can be understood that in the embodiment shown in FIG. 17, the setting of the transparent hardening liquid layer 260 can reduce the processing difficulty of the transparent colloid 250.

[0252] In order to further improve the aesthetics of the shell assembly 200, the embodiments of the present application further provide the embodiment shown in FIG. 18 on the basis of FIG. 17. Of course, FIG. 18 can also be implemented on the basis of other embodiments provided by the embodiments of the present application. Please refer to the embodiment of FIG. 18, which will not be described here.

[0253] Exemplarily, please refer to FIG. 18, which is a cross-sectional view of the shell assembly 200 shown in FIG. 2 along the cutting line A-A.

[0254] In the shell assembly 200, the transparent hardening liquid layer 260 includes the first hardening liquid area 261 and the second hardening liquid area 262 connected as a whole, which are distinguished by different filling patterns in the figure.

[0255] The first hardening liquid area 261 is distributed on the top surface of the camera decoration 220. The second hardening liquid area 262 extends from the side surface of the camera decoration 220 to the outer surface of the back cover 210, that is, the first hardening liquid area 261 is the transparent hardening liquid layer 260 on the top surface of the camera decoration 220. The second hardening liquid area 262 is the transparent hardening liquid layer 260 on the side surface of the camera decoration 220 and the outer surface of the back cover 210. Among them, the reflectivity of the first hardening liquid area 261 is higher than that of the second hardening liquid area 262.

[0256] It should be noted that in the case that the reflectivity of the first hardened liquid area 261 is higher than the reflectivity of the second hardened liquid area 262, the brightness of the first hardened liquid area 261 is higher than the second hardened liquid area 262. In this way, the first hardened liquid area 261 appears brighter and is a highlight area, and the second hardened liquid area 262 appears dimmer and is a matte area. In this way, it is more in line with the current trend, thereby helping to improve the aesthetics of the shell assembly 200.

[0257] In addition, the second hardened liquid area 262 extends from the side surface of the camera decoration piece 220 to the outer surface of the back cover 210 and is integrally formed without being partitioned, which helps to seal the gap that may exist between the camera decoration piece 220 and the back cover 210, thereby reducing the risk of external liquid entering the inside of the shell assembly 200 from between the camera decoration piece 220 and the back cover 210, and thereby improving the waterproof performance of the shell assembly 200. In addition, it can be understood that the transparent hardened liquid layer 260 in FIG. 18 has the technical effects of the transparent hardened liquid layer 260 in FIGS. 12, 14, and 17, which will not be repeated here.

[0258] In the implementation process, the first hardened liquid area 261 and the second hardened liquid area 262 can be respectively formed by the first hardened liquid and the second hardened liquid.

[0259] For example, the hardened liquid forming the first hardened liquid area 261 is the first hardened liquid, and the hardened liquid forming the second hardened liquid area 262 is the second hardened liquid. The second hardened liquid can be mixed with matting powder in the first hardened liquid to achieve a matte effect. For example, the first hardened liquid area 261 can be formed by acrylic resin without mixing matting powder, and the second hardened liquid area 262 can be formed by acrylic resin mixed with matting powder.

[0260] It should be noted that in the case that the first hardened liquid area 261 and the second hardened liquid area 262 are respectively formed by different hardened liquids, the transparent hardened liquid layer 260 on the outer surface of the camera decoration piece 220 includes the first hardened liquid area 261 on the top surface of the camera decoration piece 220 and the second hardened liquid area 262 on the side surface of the camera decoration piece 220. The transparent hardened liquid layer 260 on the outer surface of the back cover 210 includes the second hardened liquid area 262 on the outer surface of the back cover 210.

[0261] In order to make the transparent hardened liquid layer 260 visually present an integral appearance with the camera decoration 220 and the back cover 210 respectively, and in adaptation to the content in FIG. 12, it is required that the third refractive index difference between the transparent hardened liquid layer 260 (i.e. the first hardened liquid area 261 to the second hardened liquid area 262 on the side of the camera decoration 220) on the outer surface of the camera decoration 220 and the camera decoration 220 is less than or equal to 0.3; and the fourth refractive index difference between the transparent hardened liquid layer 260 (i.e. the second hardened liquid area 262 on the outer surface of the back cover 210) on the outer surface of the back cover 210 and the back cover 210 is less than or equal to 0.3.

[0262] In the implementation process, when selecting the second hardened liquid, the second hardened liquid that makes the refractive index difference between the second hardened liquid area 262 and the material of the camera decoration 220 less than or equal to 0.3 and the refractive index difference between the second hardened liquid area 262 and the back cover 210 less than or equal to 0.3 can be selected.

[0263] In the implementation process, the third refractive index difference can also be less than 0.25; further, the third refractive index difference can also be less than 0.25; in the implementation process, the fourth refractive index difference can also be less than 0.2; further, the fourth refractive index difference can also be less than 0.2. For specific reasons, please refer to the related description in FIG. 12.

[0264] Of course, in other embodiments, as shown in FIG. 12, FIG. 14 and FIG. 17, the transparent hardened liquid layer 260 can also be an integral structure layer formed by the same kind of hardened liquid without partitioning, and in the figures, the same filling pattern represents that the transparent hardened liquid layer 260 is not partitioned.

[0265] The above content is combined with FIG. 6 to FIG. 18 to describe the structure of the shell assembly 200. The description of each embodiment has its own focus. In the case of no conflict in function implementation, the part not described or recorded in a certain embodiment can be referred to the related description of other embodiments.

[0266] The manufacturing method of the shell assembly 200 is exemplarily described below.

[0267] Exemplarily, please refer to FIG. 19, which is a flow diagram of a manufacturing method of a shell assembly 200 provided by an embodiment of the present application, including the following steps S1901 to S1902:

[0268] In step S1901, the transparent gel is coated on the transparent shell.

[0269] In step S1902, the transparent appearance component is bonded to the transparent shell through the transparent gel.

[0270] In step S1903, the shell assembly is obtained.

[0271] wherein the first refractive index difference between the transparent appearance member and the transparent gel is less than or equal to 0.3; and the second refractive index difference between the transparent shell and the transparent gel is less than or equal to 0.3.

[0272] It can be understood that for the shell assembly 200 shown in FIGS. 6-18, that is, the transparent appearance member of the shell assembly 200 is the camera decoration 220, and the transparent shell of the shell assembly 200 is the back cover 210, the step S1901 in FIG. 19 can be specifically implemented by the step S1901a in FIG. 20, and the step S1902 in FIG. 19 can be specifically implemented by the step S1902a in FIG. 20.

[0273] Exemplarily, refer to FIG. 20, which is a flow diagram of another manufacturing method of a shell assembly 200 provided by an embodiment of the present application, including the following steps S1901a-S1903:

[0274] In step S1901a, the transparent gel 250 is coated on the outer surface of the back cover 210 (such as the area around the mounting hole 211).

[0275] In step S1902a, the camera decoration 220 and the transparent gel 250 are bonded away from the surface of the back cover 210, so that the camera decoration 220 covers the mounting hole 211.

[0276] In step S1903, the shell assembly 200 is obtained.

[0277] Here, the related content involved in the process flow is mainly described. In the process of manufacturing the shell assembly 200, the materials used can refer to the introduction of the related content of the foregoing embodiments of the shell assembly 200, which will not be described here.

[0278] In the related art, the transparent gel 250 is formed on the outer surface of the back cover 210 by a dispensing process. The following stages are involved: needle dispensing→ placing the camera decoration 220→ roller pressing→ ultraviolet (UV) curing, to form the transparent gel 250. The glue used in the dispensing process is 100% solid content without solvent, and has high viscosity. Since the thickness of the transparent gel 250 is controlled by the pressure of the roller, it is difficult to accurately control the amount of glue for dispensing, which leads to the situation that the camera decoration 220 is prone to excessive glue or lack of glue after bonding.

[0279] Based on this, in the implementation process, the transparent adhesive 250 can be coated on the outer surface of the back cover 210 by the silk-screen process in step S1901a. The following stages are involved: silk-screening the transparent adhesive → baking the solvent → placing the camera decoration 220 → UV light curing. When the transparent adhesive 250 is silk-screened, the thickness of the transparent adhesive 250 is controlled by the mesh number of the silk screen, and the glue area is controlled by the silk screen, so that the glue area, position and thickness can be accurately controlled, so that the transparent adhesive 250 is not easy to overflow and lack of glue after the camera decoration 220 is attached, thereby ensuring the appearance.

[0280] Specifically, the glue component for forming the transparent adhesive 250 can be modified so that the glue is suitable for gluing by the silk-screen process. The glue of the ordinary transparent adhesive mainly includes a prepolymer (such as a low-off resin), a monomer, a photoinitiator, and an auxiliary agent. In this embodiment, by adding a solvent and adjusting the proportion of the components in the glue (increasing the low-off resin and reducing the monomer content), the flowability of the glue is adjusted while the viscosity of the glue is ensured, so that the glue is suitable for gluing by the silk-screen process.

[0281] For the shell assembly 200 shown in FIGS. 6 to 18 provided with the transparent hardened liquid layer 260, according to whether the transparent hardened liquid layer 260 is provided with a matte area (i.e., the second hardened liquid area 262) and a highlight area (i.e., the first hardened liquid area 261), the embodiments of the present application further provide the following embodiments shown in FIGS. 21 and 22 on the basis of the method shown in FIG. 20.

[0282] Exemplarily, please refer to FIG. 21, which is a flow diagram of another manufacturing method of a shell assembly 200 provided by the embodiments of the present application. FIG. 21 is a manufacturing method provided for the shell assembly 200 shown in FIGS. 6 to 18 in which the transparent hardened liquid layer 260 is divided into a matte area and a highlight area (such as the shell assembly 200 shown in FIG. 18). Different from the manufacturing method shown in FIG. 20, the manufacturing method shown in FIG. 21 further includes:

[0283] After step S1902a and before step S1903, the above method further includes the following step S1902b1:

[0284] Step S1902b1, forming the second hardened liquid area 262 on the area from the side surface of the camera decoration 220 to the outer surface of the back cover 210, so that the second hardened liquid area 262 and the first hardened liquid area 261 distributed on the top surface of the camera decoration 220 together form the transparent hardened liquid layer 260, covering the outer surface of the camera decoration 220 and at least part of the area of the outer surface of the back cover 210 not occupied by the camera decoration 220.

[0285] In the implementation, the second hardened liquid area 262 can be formed in the area of the side surface of the camera decoration piece 220 to the outer surface of the back cover 210 which is not occupied by the camera decoration piece 220, as shown by the dashed line S2 in FIG. 15. Alternatively, the area of the outer surface of the back cover 210 which is not occupied by the camera decoration piece 220 can be covered, as shown by the dashed line S1 in FIG. 13.

[0286] It should be noted that the first hardened liquid area 261 can be formed on the top surface of the camera decoration piece 220 when the camera decoration piece 220 is delivered. The formation of the first hardened liquid area 261 will be described in more detail in subsequent embodiments, which will not be described here. The related content of the first hardened liquid area 261 and the second hardened liquid area 262 can be introduced in the related content of the foregoing embodiments of the shell assembly 200, which will not be described here. In the implementation, the second hardened liquid area 262 and the first hardened liquid area 261 can be formed by a spraying process.

[0287] In the related art, the second hardened liquid area 262 is formed on the outer surface of the back cover 210 when the back cover 210 is delivered. In this case, the second hardened liquid area 262 cannot obviously cover the overflow area of the transparent adhesive 250, which is not conducive to the aesthetics of the shell assembly 200. When the transparent adhesive 250 is aligned with the camera decoration piece 220 in the thickness direction by a processing process, the processing difficulty of the transparent adhesive 250 is increased, and the manufacturing cost is increased.

[0288] In the embodiment of FIG. 21, after S1902a, the second hardened liquid area 262 is arranged in the area of the side surface of the camera decoration piece 220 to the outer surface of the back cover 210, which can cover the part of the transparent adhesive 250 overflowing the side of the camera decoration piece 220, and can improve the aesthetics of the shell assembly 200. Moreover, the processing difficulty of the transparent adhesive 250 can be reduced, thereby reducing the manufacturing cost.

[0289] For example, referring to FIG. 22, FIG. 22 is a flowchart of another manufacturing method of a shell assembly 200 provided by an embodiment of the present application. FIG. 22 is a manufacturing method provided for the shell assembly 200 in which the transparent hardened liquid layer 260 is not distinguished from the matte area and the highlight area (as shown in FIG. 17), which is different from the manufacturing method shown in FIG. 20 and the manufacturing method shown in FIG. 21, and the manufacturing method shown in FIG. 22 further includes:

[0290] After S1902a and before S1903, the above method further includes the following step S1902b2:

[0291] Step S1902b2, forming the transparent hardening liquid layer 260 on the area from the top surface of the camera decoration 220 to the outer surface of the back cover 210, so that the transparent hardening liquid layer 260 covers the outer surface of the camera decoration 220 and at least part of the area of the outer surface of the back cover 210 which is not occupied by the camera decoration 220.

[0292] The related content of the transparent hardening liquid layer 260 can be introduced in the related content of the foregoing embodiment of the shell assembly 200, which will not be repeated here. In the specific implementation process, the transparent hardening liquid layer 260 can be formed by a spraying process.

[0293] In the related art, the transparent hardening liquid layer 260 is formed on the outer surface of the back cover 210 when the back cover 210 is delivered. Obviously, in this case, the transparent hardening liquid layer 260 cannot cover the overflow area of the transparent gel 250, which is not conducive to the aesthetics of the shell assembly 200. When the transparent gel 250 is aligned with the camera decoration 220 in the thickness direction through a processing process, the processing difficulty of the transparent gel 250 will be increased, and the manufacturing cost will be increased.

[0294] In the embodiment of FIG. 22, after S1902a, the transparent hardening liquid layer 260 is arranged on the area from the side surface of the camera decoration 220 to the outer surface of the back cover 210, which can cover the part of the transparent gel 250 that overflows the side of the camera decoration 220, and can improve the aesthetics of the shell assembly 200. Moreover, the processing difficulty of the transparent gel 250 can be reduced, thereby reducing the manufacturing cost.

[0295] The manufacturing method of the shell assembly 200 shown in FIG. 18 and the manufacturing method of the shell assembly 200 shown in FIG. 17 will be described in more detail through a more detailed process flow.

[0296] First, the manufacturing method of the shell assembly 200 shown in FIG. 18 will be described in more detail.

[0297] Please refer to FIG. 23 and FIG. 24, FIG. 23 is a process flow diagram of the shell assembly 200 shown in FIG. 18 provided by the embodiment of the application; and FIG. 24 is a structure process diagram corresponding to the process flow shown in FIG. 23.

[0298] The related process flow involved in the camera decoration piece alone includes: preparing the camera decoration piece transparent substrate (i.e., the transparent appearance component substrate) (as shown in (a) of FIG. 24) → spraying a first hardening liquid (such as a high-gloss hardening liquid) on the outer surface of the camera decoration piece transparent substrate to form a to-be-cut first hardening liquid area (as shown in (b) of FIG. 24) → pasting a protective film on the surface of the to-be-cut first hardening liquid area away from the camera decoration piece transparent substrate (as shown in (c) of FIG. 24) → cutting the camera decoration piece transparent substrate with the protective film pasted thereon into a plurality of to-be-molded camera decoration pieces by a computer numerical control machine tool (CNC), and processing each to-be-molded camera decoration piece into a camera decoration piece with a required shape (as shown in (d) of FIG. 24) → removing the protective film on the surface of each camera decoration piece to obtain a plurality of camera decoration pieces (as shown in (e) of FIG. 24).

[0299] The related process flow involved in the back cover alone includes: preparing the back cover transparent substrate (i.e., the transparent shell substrate) (as shown in (f) of FIG. 24) → spraying a to-be-cut decorative coating on the inner surface of the back cover transparent substrate (as shown in (g) of FIG. 24) → silk-screening transparent glue on the outer surface of the back cover transparent substrate at positions corresponding to each back cover to be cut (as shown in (h) of FIG. 24).

[0300] The related process flow involved in the assembly of the camera decoration piece and the back cover to obtain the shell assembly includes: bonding each camera decoration piece with the transparent glue on the outer surface of the back cover transparent substrate at a position corresponding to the camera decoration piece, and curing (as shown in (i) of FIG. 24) → covering the top surface of each camera decoration piece with a protective film (as shown in (j) of FIG. 24) → spraying a second hardening liquid (such as a matte hardening liquid) to form a to-be-cut second hardening liquid area (as shown in (k) of FIG. 24) → pasting a protective film on the surface of the to-be-cut second hardening liquid area (as shown in (l) of FIG. 24) → cutting the back cover transparent substrate with the plurality of camera decoration pieces bonded thereon into a plurality of to-be-molded shell assemblies by the CNC, and processing each to-be-molded shell assembly into a shell assembly with a required shape (as shown in (m) of FIG. 24) → removing the protective film on the surface of each shell assembly to obtain a plurality of shell assemblies (as shown in (n) of FIG. 24).

[0301] It should be noted that the protective film mentioned in the embodiment can protect the camera decoration piece transparent substrate and the back cover transparent substrate, reduce scratches on the outer surfaces thereof during the CNC processing, and improve the appearance yield of the shell assembly finally obtained. In addition, the protective film in (j) of FIG. 24 can prevent the second hardening liquid from being sprayed onto the top surface of each camera decoration piece.

[0302] In addition, the installation opening can be opened by CNC before the transparent glue is printed, or can be opened by CNC after the transparent glue is printed, and the embodiment of the present application does not limit this.

[0303] It can be understood that after the step shown in (d) in FIG. 24, the first hardened liquid area to be cut is cut into the first hardened liquid area of the top surface of each camera decoration piece; after the step shown in (m) in FIG. 24, the second hardened liquid area to be cut is cut into the second hardened liquid area of each shell assembly, and the back cover transparent substrate is cut into each back cover to be formed (i.e., a transparent shell to be formed) having a to-be-formed decorative coating on the inner surface. The back cover to be formed having a to-be-formed decorative coating on the inner surface is subjected to forming processing, and a back cover having a decorative coating on the inner surface and a desired shape can be obtained.

[0304] In addition, (a) in FIG. 24 to (e) in FIG. 24 and (f) in FIG. 24 to (h) in FIG. 24 can be processed in parallel or have a sequence.

[0305] Secondly, the manufacturing method of the shell assembly 200 shown in FIG. 17 will be described in more detail.

[0306] Please refer to FIG. 25 and FIG. 26, FIG. 25 is a process flow diagram of the shell assembly 200 shown in FIG. 17 provided by the embodiment of the present application; and FIG. 26 is a structure process diagram corresponding to the process flow shown in FIG. 25.

[0307] The related process flow of the camera decoration piece alone involves: preparing a camera decoration piece transparent substrate (as shown in (a) in FIG. 26) → pasting a protective film on the outer surface of the camera decoration piece transparent substrate (as shown in (b) in FIG. 26) → cutting the camera decoration piece transparent substrate with the protective film into a plurality of to-be-formed camera decoration pieces with the protective film by CNC, and processing each to-be-formed camera decoration piece into a camera decoration piece with a desired shape (as shown in (c) in FIG. 26) → removing the protective film on the surface of each camera decoration piece to obtain a plurality of camera decoration pieces (as shown in (d) in FIG. 26).

[0308] The related process flow of the back cover alone involves: preparing a back cover transparent substrate (as shown in (e) in FIG. 26) → spraying a to-be-cut decorative coating on the inner surface of the back cover transparent substrate (as shown in (f) in FIG. 26) → printing a transparent glue on the outer surface of the back cover transparent substrate corresponding to each position of each back cover to be cut (such as the surrounding area of the position for opening the installation opening) (as shown in (g) in FIG. 26).

[0309] The related process flow involved in assembling the camera decoration piece and the back cover to obtain the shell assembly is as follows: the camera decoration pieces are respectively bonded with the transparent adhesive on the outer surface of the transparent substrate of the back cover at different positions and cured (as shown in (h) of FIG. 26) → a hardening liquid (such as a matte hardening liquid) is sprayed to form a to-be-cut transparent hardening liquid layer covering the camera decoration pieces (as shown in (i) of FIG. 26) → a protective film is attached to the surface of the to-be-cut transparent hardening liquid layer (as shown in (j) of FIG. 26) → the back cover transparent substrate with the plurality of camera decoration pieces is cut into a plurality of to-be-molded shell assemblies with the protective film by CNC, and each to-be-molded shell assembly is processed and molded into a shell assembly with a desired shape (as shown in (k) of FIG. 26) → the protective film on the surface of each shell assembly is removed to obtain a plurality of shell assemblies (as shown in (l) of FIG. 26).

[0310] It should be noted that the protective film mentioned in the embodiment can protect the camera decoration piece transparent substrate and the back cover transparent substrate, reduce scratches on the outer surface thereof during CNC processing, and improve the appearance yield of the finally obtained shell assembly.

[0311] In addition, the installation opening can be opened by CNC before the transparent adhesive is printed, or can be opened by CNC after the transparent adhesive is printed, and the embodiment of the present application does not limit this.

[0312] In addition, after the step shown in (k) of FIG. 26, the to-be-cut transparent hardening liquid layer is cut into a transparent hardening liquid layer of each shell assembly, and the back cover transparent substrate is cut into a to-be-molded back cover with a to-be-molded decorative coating on the inner surface. The to-be-molded back cover with the to-be-molded decorative coating on the inner surface is processed and molded to obtain a back cover with a desired shape and a decorative coating on the inner surface. In addition, (a) of FIG. 26 to (d) of FIG. 26 and (e) of FIG. 26 to (g) of FIG. 26 can be processed in parallel or have a sequence. The back cover transparent substrate is cut into a to-be-molded back cover with a to-be-molded decorative coating on the inner surface. The to-be-molded back cover with the to-be-molded decorative coating on the inner surface is processed and molded to obtain a back cover with a desired shape and a decorative coating on the inner surface.

[0313] In the related art, as shown in FIG. 27, FIG. 27 is a structural schematic diagram of a shell assembly 200 provided in the related art with a camera decoration piece 220 and a back cover 210 integrally injection molded.

[0314] In the shell assembly 200, the camera decoration piece 220 and the back cover 210 are integrally molded by an injection molding process. In the integrally molded structure, the back cover 210 is a larger surface structure, and the camera decoration piece 220 is a boss protruding from the outer surface of the back cover 210.

[0315] It should be noted that the inner surface of the back cover 210 formed by the injection molding process cannot be completely flat due to various factors. For example, due to the limitations of the injection molding process, the inner surface of the back cover 210 needs to be provided with an injection molding recess 210b corresponding to the area of the camera decoration piece 220 to relieve the injection stress, so the inner surface of the back cover 210 cannot be completely flat. For another example, the back cover 210 is molded into the required shape, and generally the inner surface of the back cover 210 of the shape is usually not flat.

[0316] The decorative coating 230 cannot generally form an attachment on the uneven surface. Therefore, in order to achieve the decoration effect, the decorative coating 230 is first formed on a flat and bendable decorative film 280, such as a polyethylene glycol terephthalate (PET) film. Then the decorative film formed with the decorative coating 230 is pasted on the inner surface of the back cover 210 through a transparent adhesive. Because the decorative film has a bendable property, it can be fitted on the inner surface of the back cover 210 to achieve the decoration effect, but the cost is relatively high.

[0317] However, in the process flow shown in FIGS. 23-26, the back cover transparent substrate is a flat structure, and the inner surface thereof can be first formed with a to-be-cut decorative coating. Then, by cutting the back cover transparent substrate into a to-be-formed back cover, a back cover with an inner surface having a decorative coating can be obtained. Compared with the shell assembly 200 shown in FIG. 27, the manufacturing cost is lower because the decorative film 280 in FIG. 27 carrying the decorative coating is not needed.

[0318] In addition, please continue to refer to FIG. 27, due to the limitations of the injection molding process, the boss height H1 and the large surface thickness H2 (i.e. the thickness of the back cover 210) have certain proportional limitations. For example, when the large surface thickness H2 is 0.6 mm, the boss height H1 is 1.2 mm, which greatly limits the boss height H1, thereby limiting the installation space provided for the camera module.

[0319] However, the process flow shown in FIGS. 23-26 has no proportional limitation on the thickness of the back cover 210 and the camera decoration piece 220, so the thickness of the camera decoration piece 220 can be set according to the requirements to meet the installation space required by the camera module.

[0320] In addition, please continue to refer to FIG. 27, due to the limitations of the injection molding process, the mold corner is not easy to fill, resulting in that the R angle of the outer surface of the integrally formed structure is not enough. However, the R angle of the shell assembly obtained by cutting in the process flow shown in FIGS. 23-26 is more forceful.

[0321] It should be noted that the size of the serial number of each flow step in FIGS. 19-26 does not mean the order of execution, the execution order of each process should be determined according to its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. In addition, the embodiments shown in FIGS. 19-26 can also include more steps, which are not specifically limited by the embodiments of the present application. In addition, the meaning of the related structure of the embodiments shown in FIGS. 19-26 can be introduced according to the related description of the embodiments of the shell assembly 200.

[0322] Finally, it should be noted that in the description of the present application, specific features, structures, etc. can be combined in any one or more embodiments or examples in a suitable manner. Moreover, the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A housing assembly, characterized by, Comprise: a transparent shell; a transparent adhesive; a transparent appearance member; the transparent appearance member is adhered to the transparent shell by the transparent adhesive; wherein a first refractive index difference between the transparent appearance member and the transparent adhesive is less than or equal to 0.3; a second refractive index difference between the transparent shell and the transparent adhesive is less than or equal to 0.

3.

2. The housing assembly of claim 1, wherein, The first refractive index difference is less than or equal to 0.

25.

3. The housing assembly of claim 2, wherein, The first refractive index difference is less than or equal to 0.

2.

4. The housing assembly of any one of claims 1 to 3, wherein, The second refractive index difference is less than or equal to 0.

25.

5. The housing assembly of claim 4, wherein, The second refractive index difference is less than or equal to 0.

2.

6. The housing assembly of any one of claims 1 to 5, wherein, The transparent appearance member is located on a side toward which an outer surface of the transparent shell faces.

7. The housing assembly of claim 6, wherein, The shell assembly further comprises a transparent hardening liquid layer; The transparent hardening liquid layer extends from a top surface of the transparent appearance member to an outer surface of the transparent shell to cover an outer surface of the transparent appearance member and at least a part of the outer surface of the transparent shell not occupied by the transparent appearance member; the at least a part of the outer surface of the transparent shell surrounds the transparent appearance member and is in contact with the transparent appearance member; wherein a third refractive index difference between the transparent hardening liquid layer on the outer surface of the transparent appearance member and the transparent appearance member is less than or equal to 0.3; a fourth refractive index difference between the transparent hardening liquid layer on the outer surface of the transparent shell and the transparent shell is less than or equal to 0.

3.

8. The housing assembly of claim 7, wherein, The third refractive index difference is less than or equal to 0.

25.

9. The housing assembly of claim 8, wherein, The third refractive index difference is less than or equal to 0.

2.

10. The housing assembly of any one of claims 7 to 9, wherein, The fourth refractive index difference is less than or equal to 0.

25.

11. The housing assembly of claim 10, wherein, The fourth refractive index difference is less than or equal to 0.

2.

12. The housing assembly of any one of claims 7 to 11, wherein, The transparent hardening liquid layer further extends from the outer surface of the transparent shell to an edge of the outer surface of the transparent shell to cover the whole of the outer surface of the transparent shell not occupied by the transparent appearance member.

13. The housing assembly of any one of claims 7 to 12, wherein, The transparent hardening liquid layer comprises a first hardening liquid region and a second hardening liquid region connected as one; The first hardening liquid region is distributed on a top surface of the transparent appearance member, and the second hardening liquid region extends from a side surface of the transparent appearance member to an outer surface of the transparent shell; wherein a reflectivity of the first hardening liquid region is higher than a reflectivity of the second hardening liquid region.

14. The housing assembly of any one of claims 6 to 13, wherein, The transparent adhesive has an overflow region overflowing to a side toward which a side surface of the transparent appearance member faces; The transparent hardening liquid layer further covers the overflow region.

15. The housing assembly of any one of claims 6 to 13, wherein, The transparent adhesive is aligned with the transparent appearance member in a thickness direction of the transparent shell.

16. The housing assembly of any one of claims 1 to 15, wherein, The transparent shell and the transparent appearance member are made of plastic.

17. The housing assembly of any one of claims 1 to 15, wherein, The transparent shell and the transparent appearance member are made of glass.

18. The housing assembly of any one of claims 1 to 17, wherein, The transparent shell is a back cover, and the back cover has a mounting opening formed therein; The transparent appearance member is a camera decoration piece, and the camera decoration piece is adhered to the back cover by the transparent adhesive and covers the mounting opening.

19. The housing assembly of claim 18, wherein, The transparent adhesive surrounds the mounting opening.

20. A manufacturing method of the shell assembly according to any one of claims 1 to 19, wherein: a transparent adhesive is applied to a transparent shell; attaching the transparent appearance member to the transparent shell through the transparent adhesive to obtain a shell assembly; wherein a first refractive index difference between the transparent appearance member and the transparent adhesive is less than or equal to 0.3; and a second refractive index difference between the transparent shell and the transparent adhesive is less than or equal to 0.

3.

21. The method of claim 20, wherein the coating the transparent adhesive on the transparent shell specifically comprises: coating the transparent adhesive on an outer surface of the transparent shell; the attaching the transparent appearance member to the transparent shell through the transparent adhesive specifically comprises: attaching the transparent appearance member and the transparent adhesive away from a surface of the transparent shell.

22. The method of claim 21, wherein, After the attaching the transparent appearance member and the transparent adhesive away from the surface of the transparent shell, the method further comprises: forming a second hardened liquid area on a side of the transparent appearance member to an area of an outer surface of the transparent shell, so that the second hardened liquid area and a first hardened liquid area distributed on a top surface of the transparent appearance member form a transparent hardened liquid layer, the transparent hardened liquid layer covering an outer surface of the transparent appearance member and at least a part of an area of the outer surface of the transparent shell not occupied by the transparent appearance member, the at least a part of the area surrounding the transparent appearance member and being in contact with the transparent appearance member.

23. The method of claim 21, wherein, After the attaching the transparent appearance member and the transparent adhesive away from the surface of the transparent shell, the method further comprises: forming a transparent hardened liquid layer on a top surface of the transparent appearance member to an area of an outer surface of the transparent shell, so that the transparent hardened liquid layer covers an outer surface of the transparent appearance member and at least a part of an area of the outer surface of the transparent shell not occupied by the transparent appearance member, the at least a part of the area surrounding the transparent appearance member and being in contact with the transparent appearance member. The transparent appearance member is formed by cutting a transparent appearance member substrate; and the transparent shell is formed by cutting a transparent shell substrate.

24. The method according to any one of claims 21 to 23, characterized in that, The process of cutting the transparent shell substrate to form the transparent shell comprises:

25. The method of claim 24, wherein, forming a to-be-cut decorative coating on an inner surface of the transparent shell substrate; cutting the transparent shell substrate with the to-be-cut decorative coating to form a plurality of to-be-shaped transparent shells with a to-be-shaped decorative coating on an inner surface, the to-be-shaped decorative coating being cut from the to-be-cut decorative coating; performing shaping processing on the to-be-shaped transparent shells with the to-be-shaped decorative coating on the inner surface to obtain the transparent shell with a decorative coating on the inner surface, the decorative coating being shaped from the to-be-shaped decorative coating, and the transparent shell being shaped from the to-be-shaped transparent shell. The coating the transparent adhesive on the transparent shell comprises:

26. The method of any one of claims 20 to 25, wherein, coating the transparent adhesive on the transparent shell by a silk-screen printing process. The shell assembly comprises:

27. An apparatus with a housing assembly, comprising: the shell assembly of any one of claims 1 to 19 or obtained by the method of any one of claims 20 to 26. ​

Images