Shell, electronic equipment and electronic equipment assembly

Abstract

The embodiment of the utility model provides a shell, electronic equipment and an electronic equipment assembly, and relates to the technical field of electronic equipment. The shell comprises a plurality of structural layers which are arranged in a stacked mode. The multi-layer structure layer comprises a base material layer, a first coloring layer, a second coloring layer and a transparent outer coating layer, the base material layer, the first coloring layer and the second coloring layer are all arranged on the inner side of the transparent outer coating layer, the transparent outer coating layer is a soft structure layer, the first coloring layer is used for forming a background of the shell appearance, and the second coloring layer is used for forming a local pattern of the shell appearance. In this way, diversified local patterns can be easily formed on the shell with the soft hand feeling.

Description

Technical Field

[0001] This application relates to the field of electronic device technology, and in particular to a housing, electronic device, and electronic device assembly. Background Technology

[0002] The outer casing (e.g., the back cover of an electronic device, a protective case covering the outside of an electronic device) not only protects the components inside the electronic device or the electronic device itself, but also has a significant impact on the appearance and feel of the electronic device.

[0003] To improve the appearance and feel of electronic devices, related technologies have developed solutions where the casing can include a substrate layer and an outer surface layer (e.g., a vegan leather layer) outside the substrate layer. The substrate layer provides structural strength, while the outer surface layer enhances the appearance and feel of the casing. However, in these related technologies, it is difficult to create diverse local patterns (e.g., logos, decorative details, etc.) on a casing with a soft feel. Utility Model Content

[0004] This application provides a housing, an electronic device, and an electronic device assembly, which makes it relatively easy to form diverse local patterns on a housing with a soft feel.

[0005] A first aspect of this application provides a housing, which includes a multilayer structure layer stacked on top of each other. The multilayer structure layer includes a substrate layer, a first coloring layer, a second coloring layer, and a transparent outer cover layer. The substrate layer, the first coloring layer, and the second coloring layer are all disposed inside the transparent outer cover layer. The transparent outer cover layer is a soft structure layer. The first coloring layer is used to form a background for the appearance of the housing, and the second coloring layer is used to form a partial pattern for the appearance of the housing.

[0006] The housing provided in this application embodiment has a soft, transparent outer layer that provides a soft feel, improves the anti-slip properties of the outer surface, enhances the wear resistance of the outer surface, and improves the shock absorption properties of the outer surface, thereby improving the feel of the electronic device and protecting it. The background formed by the first coloring layer and the partial pattern formed by the second coloring layer can be seen through the transparent outer layer on the outer surface of the housing, forming the background and partial pattern of the housing's appearance. The first and second coloring layers can respectively form diverse backgrounds and partial patterns, facilitating the creation of diverse appearances for the housing.

[0007] At this point, the first coloring layer, the second coloring layer, and the transparent outer coating layer can be sequentially stacked on the substrate layer in a set order using printing or other methods to form the background and partial patterns of the shell appearance. This eliminates the need to first form multiple independent structural layers and then assemble them, making it easier to form diverse backgrounds and partial patterns on a shell with a soft feel.

[0008] Furthermore, since the background, partial patterns, and soft-touch texture of the outer shell do not require the separate formation of multiple independent structural layers and their assembly, the molding process of the outer shell is simpler, resulting in lower manufacturing costs.

[0009] In addition, the second coloring layer used to form the local pattern does not need to be assembled with other structural layers, and there is no assembly error between the second coloring layer used to form the local pattern and other structural layers, which can make the formed local pattern more accurate.

[0010] Furthermore, the background, partial patterns, and structural layers used to form the shell's appearance and give it a soft feel do not require assembly. There is no need to consider the transfer and assembly of structural layers, which helps to reduce the thickness of each structural layer and thus facilitates the lightweight design of the shell.

[0011] In addition, the second coloring layer used to form the local pattern can be formed on the surface of the adjacent structural layer. The second coloring layer is not easy to fall off, which makes the formed local pattern more reliable. It is not necessary to set the groove or other structures in the substrate layer to form a more reliable local pattern, which makes the substrate layer stronger and thus the formed shell stronger.

[0012] In one possible implementation, the second coloring layer is disposed between the transparent outer layer and the first coloring layer, and the orthographic projection of the second coloring layer onto the first coloring layer covers a portion of the first coloring layer.

[0013] In this way, a partial pattern can be formed by covering part of the first colored area with the second colored layer. Forming a partial pattern is relatively easy and can simplify the structure of the outer shell.

[0014] In one possible implementation, the first coloring layer has a light-transmitting structure, and the orthographic projection of the second coloring layer onto the first coloring layer covers at least a portion of the light-transmitting structure. The second coloring layer is disposed within the light-transmitting structure, or it is disposed on the side of the first coloring layer away from the transparent outer layer.

[0015] Thus, a local pattern can be formed by the portion of the second coloring layer located in the light-transmitting structure. When the second coloring layer is located within the light-transmitting structure, it helps to reduce the thickness of the outer shell. When the second coloring layer is located on the side of the first coloring layer away from the transparent outer layer, the first coloring layer can protect the second coloring layer, making it less susceptible to damage from scratches or other external impacts on the outer shell, resulting in a more reliable local pattern.

[0016] In one possible implementation, the orthographic projection of the second coloring layer onto the first coloring layer covers the light-transmitting structure, and the area of ​​the orthographic projection of the second coloring layer onto the first coloring layer is larger than the area of ​​the light-transmitting structure.

[0017] Thus, the resulting local patterns have high precision. In addition, the area of ​​the second coloring layer projected onto the first coloring layer is larger than the area of ​​the light-transmitting structure, which allows the shape of the local patterns to be controlled through the light-transmitting structure. The alignment requirements between the first and second coloring layers are lower, making the shell molding easier.

[0018] In one possible implementation, the orthogonal projection of the second shading layer onto the first shading layer covers the first shading layer.

[0019] In this way, the second coloring layer can be applied continuously, and the molding of the second coloring layer is relatively easy. In addition, the alignment requirements between the first and second coloring layers can be further reduced, making the shell molding easier.

[0020] In one possible implementation, the light-transmitting structure is a perforated structure.

[0021] In this way, it is easier to form a light-transmitting structure, which helps to reduce the number of process steps in forming the shell and lower the cost of manufacturing the shell.

[0022] In one possible implementation, the first coloring layer is disposed between the substrate layer and the transparent outer coating layer.

[0023] Thus, the first coloring layer used to form the background is close to the outer surface of the shell, and the number of structural layers that the background needs to pass through to reach the outer surface of the shell is less, which makes the color of the background appear more solid on the outer surface of the shell.

[0024] In one possible implementation, the first coloring layer is disposed on the side of the substrate layer away from the transparent outer cover layer, and the substrate layer is a transparent structural layer.

[0025] In this way, the background formed by the first coloring layer is visible on the outer surface of the casing after passing through the substrate layer and the transparent outer coating, thereby enhancing the transparency of the displayed background. In addition, the thicker substrate layer can protect the first coloring layer, making it less susceptible to damage from scratches or other impacts from the outside of the casing, resulting in a more reliable background.

[0026] In one possible implementation, the second coloring layer is disposed between the substrate layer and the transparent outer coating layer.

[0027] Thus, the second coloring layer used to form the local pattern is close to the outer surface of the shell, and the number of structural layers that the local pattern needs to pass through to be transmitted to the outer surface of the shell is less, which makes the color of the local pattern appear more solid on the outer surface of the shell.

[0028] In one possible implementation, the second coloring layer is disposed on the side of the substrate layer away from the transparent outer cover layer, and the substrate layer is a transparent structural layer.

[0029] In this way, the local pattern formed by the second coloring layer is visible on the outer surface of the casing after passing through the substrate layer and the transparent outer coating, thereby enhancing the transparency of the visible local pattern. In addition, the thicker substrate layer can protect the second coloring layer, making it less susceptible to damage from scratches or other impacts from the outside of the casing, resulting in better reliability of the formed local pattern.

[0030] In one possible implementation, the outer surface of the transparent overlay has a textured structure.

[0031] Thus, by setting a textured structure, the appearance and feel of the casing can be made more diverse, which is beneficial to improving the appearance and feel of the casing. In addition, the textured structure can also further improve the anti-slip performance of the outer surface of the casing.

[0032] In one possible implementation, the transparent outer layer is made of at least one of polyurethane, silicone, and acrylic.

[0033] This facilitates the formation of a soft, transparent outer coating. Furthermore, the resulting transparent outer coating can possess good environmental performance, thus meeting the environmental requirements of electronic devices such as mobile phones and tablets.

[0034] In one possible implementation, the thickness of the first coloring layer is greater than or equal to 5 μm.

[0035] Thus, forming the first coloring layer is relatively easy. Furthermore, the formed first coloring layer has a certain thickness, which makes the background formed by the first coloring layer less prone to imperfections due to coating defects, resulting in a more precise background. Additionally, the formed first coloring layer has a certain thickness, which reduces its transmittance, facilitating the formation of an opaque first coloring layer.

[0036] In one possible implementation, the thickness of the first coloring layer is less than or equal to 15 μm.

[0037] In this way, while the first coloring layer can meet the coloring requirements, it can also have a relatively thin thickness, which is beneficial for the design of a thinner and lighter shell.

[0038] In one possible implementation, the thickness of the second coloring layer is greater than or equal to 3 μm.

[0039] Thus, forming the second coloring layer is relatively easy. Furthermore, the formed second coloring layer has a certain thickness, which makes the local patterns formed by the second coloring layer less prone to defects due to coating flaws, resulting in better precision of the formed local patterns. Additionally, the formed second coloring layer has a certain thickness, which reduces its transmittance, facilitating the formation of an opaque second coloring layer.

[0040] In one possible implementation, the thickness of the second coloring layer is less than or equal to 10 μm.

[0041] In this way, while the second coloring layer can meet the coloring requirements, it can also have a thinner thickness, which is beneficial for the design of a thinner and lighter shell.

[0042] In one possible implementation, the thickness of the substrate layer is greater than or equal to 0.2 mm.

[0043] This allows the substrate layer to have high strength, which in turn allows the formed shell to have high strength.

[0044] In one possible implementation, the thickness of the substrate layer is less than or equal to 0.8 mm.

[0045] In this way, while the substrate layer has high strength, the thickness of the substrate layer can be thinner, which is beneficial to reducing the thickness of the formed shell.

[0046] In one possible implementation, the thickness of the transparent outer layer is greater than or equal to 50 μm.

[0047] This allows the transparent outer layer to have a better soft feel. Furthermore, it also helps protect the structural layers inside the transparent outer layer.

[0048] In one possible implementation, the thickness of the transparent outer layer is less than or equal to 250 μm.

[0049] In this way, while the transparent outer layer has a good soft feel and good protective performance, it can be made thinner, which is conducive to reducing the thickness of the resulting outer shell.

[0050] In one possible implementation, the casing is the casing of an electronic device, or the casing is a protective cover for mounting on the outside of an electronic device.

[0051] This allows electronic devices to have a soft feel while also creating diverse backgrounds and partial patterns on their appearance.

[0052] A second aspect of this application provides an electronic device including a first housing. The first housing is any housing as described in the first aspect.

[0053] A third aspect of this application provides an electronic device assembly, which includes an electronic device and a second housing, the second housing being a protective cover for being fitted over the outside of the electronic device. The second housing is any of the housings provided in the first aspect.

[0054] In one possible implementation, the electronic device is the electronic device in any of the embodiments provided by the second aspect. Attached Figure Description

[0055] Figure 1 A schematic diagram of an electronic device provided in an embodiment of this application;

[0056] Figure 2 A schematic diagram of the stacking of a shell provided in an embodiment of this application;

[0057] Figure 3 This is a schematic diagram of the appearance of a housing provided in an embodiment of this application;

[0058] Figure 4 A schematic diagram of the stacking of another type of outer casing provided in an embodiment of this application;

[0059] Figure 5 A schematic diagram of the stacking of another type of outer casing provided in an embodiment of this application;

[0060] Figure 6 A schematic diagram of the stacking of another type of outer casing provided in an embodiment of this application;

[0061] Figure 7 A schematic diagram of the stacking of another type of outer casing provided in an embodiment of this application;

[0062] Figure 8 A schematic diagram of the stacking of another type of outer casing provided in an embodiment of this application;

[0063] Figure 9 A schematic diagram of the stacking of another type of outer casing provided in an embodiment of this application;

[0064] Figure 10 A schematic diagram of the stacking of another type of outer casing provided in an embodiment of this application;

[0065] Figure 11 A schematic diagram of the stacking of another type of outer casing provided in an embodiment of this application;

[0066] Figure 12 This is a schematic diagram of another type of shell provided in an embodiment of this application.

[0067] Explanation of reference numerals in the attached figures:

[0068] 10. Housing assembly; 11. Mid-frame; 12. Back cover; 20. Motherboard; 30. Battery; 40. Display screen;

[0069] 1000, Outer shell; 1100, Background; 1200, Detail pattern;

[0070] 100. Substrate layer;

[0071] 200, First coloring layer; 210, Light-transmitting structure;

[0072] 300, Second coloring layer;

[0073] 400. Transparent outer layer; 410. Texture structure;

[0074] 500, flame-retardant layer;

[0075] 600, bottom layer. Detailed Implementation

[0076] The terminology used in the implementation section of this application is only for explaining specific embodiments of this application and is not intended to limit this application. The implementation of the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0077] This application provides an electronic device, which may include, but is not limited to, mobile phones, tablets, laptops, ultra-mobile personal computers (UMPCs), handheld computers, walkie-talkies, netbooks, point-of-sale (POS) machines, personal digital assistants (PDAs), wearable devices, virtual reality devices, etc. The electronic device may be a foldable device, such as a foldable mobile phone. It may also be a non-foldable device, such as a candybar mobile phone. This application uses a candybar mobile phone as an example for illustration.

[0078] Figure 1 This is an exploded view of an electronic device provided in an embodiment of this application.

[0079] like Figure 1 As shown, the electronic device includes a housing assembly 10, a battery 30, and a motherboard 20. The housing assembly 10 is used to enclose and form an installation space. The battery 30 and the motherboard 20 are disposed within the installation space. The battery 30 is used to supply power to the motherboard 20. The housing assembly 10 can protect and support the components within the installation space.

[0080] For example, in addition to the battery 30 and the motherboard 20, other components, such as speakers and sensors, may be installed in the mounting space. The battery 30 can also be used to power other components.

[0081] In some examples, the electronic device also includes a display screen 40 connected to the housing assembly 10. For example, the display screen 40 may be bonded to the housing assembly 10, and the housing assembly 10 may be used to support the display screen 40. The display screen 40 and the housing assembly 10 may enclose a mounting space for mounting components such as the battery 30 and the motherboard 20 of the electronic device, and the battery 30 may be used to supply power to the display screen 40.

[0082] In other examples, the electronic device may include a housing assembly 10 but not a display screen 40. The housing assembly 10 may form an installation space on its own, and components such as the battery 30 and the motherboard 20 are located in the device installation cavity formed by the housing assembly 10 itself.

[0083] This application uses an electronic device including a display screen 40 as an example for illustration.

[0084] like Figure 1 As shown, for example, the housing assembly 10 may include a middle frame 11 and a rear cover 12. The rear cover 12 and the display screen 40 are located on opposite sides of the middle frame 11 and are respectively connected to the middle frame 11. The display screen 40, the rear cover 12 and the middle frame 11 can enclose an installation space. The middle frame 11 can provide structural strength for the electronic device. The middle frame 11 can protect and support the components in the installation space. The rear cover 12 can protect the components in the installation space.

[0085] For example, the display screen 40 can be glued to the middle frame 11.

[0086] In some examples, the middle frame 11 and the back cover 12 can be separate structures. The middle frame 11 and the back cover 12 can be fixedly connected by at least one of the following methods: adhesive, snap-fit, fastener connection, etc. In this case, the back cover 12 can be referred to as the first shell.

[0087] In other examples, the middle frame 11 and the back cover 12 can also be an integral structure, that is, the middle frame 11 and the back cover 12 can be integrated into a single structural component. In this case, the structural component into which the middle frame 11 and the back cover 12 are integrated can be called the first outer shell.

[0088] In some examples where the electronic device is a non-foldable device, the housing assembly 10 may include a mid-frame 11 and a rear cover 12, and the housing assembly 10 may include a first housing.

[0089] When the electronic device is a foldable device, the housing assembly 10 may include multiple middle frames 11 and multiple rear covers 12 corresponding to each middle frame 11. Two adjacent middle frames 11 can be rotatably connected by a pivot mechanism. The rear cover 12 is disposed on the corresponding middle frame 11. Each middle frame 11 and the corresponding rear cover 12 are used to enclose and form an installation space. The display screen 40 can be disposed on the multiple middle frames 11. In this case, the housing assembly 10 may include multiple first outer shells.

[0090] For example, the display screen 40 can be a flexible screen.

[0091] This application also provides a protective case, which is used to cover the outside of an electronic device. In other words, the electronic device can be housed inside the protective case, and the protective case can protect the electronic device.

[0092] The protective case is an accessory separate from the electronic device. The protective case can be fitted onto the outside of the housing assembly 10 of the electronic device.

[0093] For example, protective cases may include, but are not limited to, mobile phone protective cases, tablet protective cases, etc.

[0094] In this application, the "outer side" of a component or structure refers to the side of the described object facing away from the mounting space of the electronic device, and the "inner side" of a component or structure refers to the side of the described object facing towards the mounting space of the electronic device. The "outer surface" of a component or structure refers to the surface of the described object facing away from the mounting space of the electronic device, and the "inner surface" of a component or structure refers to the surface of the described object facing towards the mounting space of the electronic device.

[0095] This application also provides an electronic device assembly, which includes an electronic device and a second housing, the second housing being a protective sleeve for being fitted over the outside of the electronic device. The electronic device can be any of the electronic devices described in the above embodiments, or it can be other electronic devices.

[0096] This application provides a housing 1000, which may include, but is not limited to, a housing 1000 for an electronic device, a protective sleeve for covering the outside of an electronic device, etc. For example, the housing 1000 may be either the first housing described above or the second housing described above.

[0097] The housing 1000 is disposed on the outer surface of the electronic device. In addition to protecting the components inside the electronic device or the electronic device itself, the housing 1000 also has a significant impact on the appearance and feel of the electronic device. For example, when the housing 1000 is a protective cover, the appearance and feel of the electronic device can be changed by placing the protective cover on the outside of the electronic device.

[0098] For example, when the housing 1000 is the housing 1000 of an electronic device (e.g., a first housing), the housing 1000 being disposed on the outer surface of the electronic device means that the housing 1000 is used to form at least a portion of the outer surface of the electronic device.

[0099] For example, when the housing 1000 is a protective cover, the housing 1000 being located on the outer surface of the electronic device means that the protective cover is fitted onto the outside of the electronic device.

[0100] Figure 2 This is a schematic diagram of the stacking of a shell according to an embodiment of this application.

[0101] like Figure 2 As shown, the outer shell 1000 includes a multi-layer structure layer stacked together. The multi-layer structure layer includes a substrate layer 100. That is, one of the structural layers in the multi-layer structure layer is the substrate layer 100, which is used to provide structural strength for the outer shell 1000.

[0102] For example, the substrate layer 100 can be made of a non-metallic material, so that the substrate layer 100 has less impact on the communication signal.

[0103] For example, the substrate layer 100 may include at least one of the following: polycarbonate (PC) board layer, polycarbonate / polymethyl methacrylate (PMMA) composite board layer, glass fiber (GF) / epoxy resin composite board layer, carbon fiber / epoxy resin composite board layer, polycarbonate / glass fiber composite board layer, polyamide (PA) / glass fiber composite board layer, etc.

[0104] Figure 3 This is a schematic diagram of the appearance of a housing provided in an embodiment of this application.

[0105] like Figure 3 As shown, the outer surface of the housing 1000 has a background 1100 and a partial pattern 1200, that is, the appearance of the housing 1000 has a background 1100 and a partial pattern 1200.

[0106] For example, background 1100 can be a solid color background, a gradient background, a fluorescent background, a patterned background, etc. Background 1100 can have one or more colors.

[0107] For example, the outer surface of the housing 1000 may have one or more partial patterns 1200 formed thereon. For instance, the outer surface of the housing 1000 may have multiple different partial patterns 1200 formed thereon.

[0108] For example, partial pattern 1200 may include, but is not limited to, a logo, partial decorative pattern, etc. For instance, partial pattern 1200 may include a mark, trademark, etc., used to indicate a product model.

[0109] In some related technologies, the multi-layer structure also includes an outer layer (e.g., a vegan leather layer). The outer layer is used to form the appearance of the casing and improve its feel. Local patterns can be formed by laser engraving on the outer surface of the outer layer. However, in this approach, the colors of the local patterns formed by laser engraving on the outer surface of the outer layer are relatively limited, making it difficult to meet users' needs for diverse local patterns.

[0110] To reduce limitations on the color of the formed local patterns and create diverse local patterns, some related technologies include a shell that also includes decorative elements. The multi-layer structure further includes an outer layer (e.g., a vegan leather layer). The outer layer forms the background for the shell's appearance and enhances its tactile feel. The outer layer has perforated structures for the decorative elements to pass through. The decorative elements are nested within these perforated structures and bonded to a substrate layer. The local pattern is formed by the portion of the decorative elements passing through the perforated structures. However, this approach requires the separate formation of the substrate layer, outer layer, and decorative elements, followed by their assembly. Alignment of these elements is challenging, as is assembly, making the formation of local patterns difficult. Furthermore, the separate manufacturing of the outer layer and decorative elements, and their assembly, complicates the shell's molding process, increasing production costs. Additionally, assembly errors result in lower precision of the formed local patterns. Furthermore, to allow decorative elements to be inserted into the outer layer and transferred to the substrate layer for bonding, the outer layer needs to be relatively thick, which is detrimental to the design of a thinner and lighter outer shell. In addition, decorative elements fixed to the substrate layer by bonding are prone to detachment, resulting in poor reliability of the formed local patterns. Moreover, to increase the bonding area between the decorative elements and the substrate layer, the substrate layer often needs to have grooves for inserting the decorative elements. These grooves reduce the strength of the substrate layer, which in turn reduces the strength of the resulting outer shell.

[0111] Based on this, such as Figure 2 , Figure 3 As shown in the embodiment of this application, the multilayer structure layer further includes a first coloring layer 200, a second coloring layer 300, and a transparent outer cover layer 400. That is, one of the structural layers in the multilayer structure layer is the first coloring layer 200, one is the second coloring layer 300, and one is the transparent outer cover layer 400. The substrate layer 100, the first coloring layer 200, and the second coloring layer 300 are all disposed inside the transparent outer cover layer 400. The transparent outer cover layer 400 is a soft structural layer. The first coloring layer 200 is used to form the background 1100 of the appearance of the outer shell 1000, and the second coloring layer 300 is used to form the partial pattern 1200 of the appearance of the outer shell 1000.

[0112] In this way, the soft, transparent outer layer 400 can provide a soft feel, improve the anti-slip performance of the outer surface of the casing 1000, improve the wear resistance of the outer surface of the casing 1000, and improve the shock absorption performance of the casing 1000, which is beneficial to improving the feel of electronic devices and protecting them. The background 1100 formed by the first coloring layer 200 and the partial pattern 1200 formed by the second coloring layer 300 can be seen through the transparent outer layer 400 on the outer surface of the casing 1000 to form the background 1100 and the partial pattern 1200 of the appearance of the casing 1000. The first coloring layer 200 and the second coloring layer 300 can respectively form a variety of backgrounds 1100 and partial patterns 1200, which makes it easy for the casing 1000 to form a variety of appearances.

[0113] At this time, the first coloring layer 200, the second coloring layer 300, and the transparent outer coating layer 400 can be sequentially layered on the substrate layer 100 using printing or other methods in a predetermined order. This forms the background 1100 and partial patterns 1200 of the outer shell 1000's appearance, and eliminates the need to first form multiple independent structural layers and then assemble them, making it easier to form diverse backgrounds 1100 and partial patterns 1200 on the soft-touch outer shell 1000. Furthermore, since forming the background 1100 and partial patterns 1200 of the outer shell 1000's appearance and giving it a soft-touch feel does not require first forming multiple independent structural layers and then assembling them, the molding process of the outer shell 1000 is simpler, resulting in lower manufacturing costs. Furthermore, the second coloring layer 300 used to form the partial pattern 1200 does not require assembly with other structural layers, eliminating assembly errors and resulting in high precision for the formed partial pattern 1200. Moreover, the background 1100, the partial pattern 1200, and the structural layers that give the shell 1000 a soft feel do not require assembly, eliminating concerns about structural layer transfer and assembly. This facilitates reducing the thickness of each structural layer and thus enabling a lightweight design for the shell 1000. In addition, the second coloring layer 300 can be formed on the surface of adjacent structural layers, making it less prone to peeling off. This improves the reliability of the formed partial pattern 1200, eliminating the need for grooves or other structures in the substrate layer 100 to achieve a more reliable partial pattern 1200. This results in higher strength for the substrate layer 100 and consequently, higher strength for the formed shell 100.

[0114] For example, in the fabrication process of the outer shell 1000, other structural layers can be formed on the substrate layer 100 by printing in a predetermined order. These other structural layers include a first coloring layer 200, a second coloring layer 300, and a transparent outer coating layer 400. After the printing of each structural layer is completed, an outer shell blank is formed. After the outer shell blank is formed, it can be shaped into a 3D form by applying high pressure, and then the outer shell 1000 is formed by machining with a computerized numerical control (CNC) machine tool.

[0115] For example, the material of the first coloring layer 200 may include ink or paint.

[0116] For example, the material of the second coloring layer 300 may include ink or paint.

[0117] For example, the transparent outer cover 400 may be located on the outer surface of the housing 1000.

[0118] For example, the transmittance of the transparent outer layer 400 can be determined according to the requirements. For example, the transmittance of the transparent outer layer 400 can be 40%, 50%, 60%, 70%, 80%, 90%, etc., as long as the background 1100 formed by the first coloring layer 200 and the partial pattern 1200 formed by the second coloring layer 300 can be seen through the transparent outer layer 400 on the outer surface of the outer shell 1000.

[0119] In some possible implementations, the outer surface of the transparent outer coating 400 has a textured structure 410.

[0120] In this way, by setting the texture structure 410, the appearance and feel of the shell 1000 can be more diversified, which is conducive to improving the appearance and feel of the shell 1000. In addition, the texture structure 410 can also further improve the anti-slip performance of the outer surface of the shell 1000.

[0121] For example, the texture structure 410 may include, but is not limited to, cowhide texture, lychee texture, stripes, etc.

[0122] For example, the transparent outer layer 400 is made of an organic polymer material. This facilitates the formation of a soft, textured transparent outer layer 400 with a textured structure 410. Furthermore, it minimizes the impact of the transparent outer layer 400 on communication signals. Additionally, it allows for a lighter weight. Moreover, it reduces the likelihood of issues such as excessive heat or coldness to the touch.

[0123] For example, the outer shell 1000 can be a vegan leather shell, that is, at least a portion of the outer surface of the outer shell 1000 has a leather-like appearance and texture, and the texture structure 410 is a faux leather texture.

[0124] In some possible implementations, the transparent outer coating 400 is made of at least one of polyurethane (PU), silicone, and acrylic.

[0125] This facilitates the formation of a soft, transparent outer layer 400, for example, creating a leather-like texture. Furthermore, the resulting transparent outer layer 400 can possess good environmental performance.

[0126] For example, the transparent outer layer 400 can be a polyurethane layer, that is, the material of the transparent outer layer 400 can be polyurethane, which can make the formed transparent outer layer 400 have good touch, breathability, durability and low cost.

[0127] For example, the transparent outer layer 400 may be made of thermoplastic polyurethane (TPU). For instance, the transparent outer layer 400 may be a thermoplastic polyurethane layer.

[0128] In some examples, the first color layer 200 is an opaque structural layer.

[0129] In this way, the structure inside the first coloring layer 200 is less likely to affect the background 1100 formed by the first coloring layer 200, which is beneficial to control the background 1100 of the appearance of the outer shell 1000 through the first coloring layer 200.

[0130] In some possible implementations, the thickness of the first coloring layer 200 is greater than or equal to 5 μm.

[0131] Thus, forming the first coloring layer 200 is relatively easy. Furthermore, the formed first coloring layer 200 has a certain thickness, which makes the background 1100 formed by the first coloring layer 200 less prone to defects due to coating flaws, resulting in a more precise background 1100. Additionally, the formed first coloring layer 200 has a certain thickness, which reduces its translucency, facilitating the formation of an opaque first coloring layer 200.

[0132] In some possible implementations, the thickness of the first coloring layer 200 is less than or equal to 15 μm.

[0133] In this way, while the first coloring layer 200 can meet the coloring requirements, it can also have a thinner thickness, which is beneficial to the lightweight design of the outer shell 1000.

[0134] For example, the first coloring layer 200 may have one or more colors.

[0135] For example, the color of the first coloring layer 200 may include one or more of solid colors, gradient colors, fluorescent colors, etc.

[0136] In some examples, the second color layer 300 is an opaque structural layer.

[0137] In this way, the structure inside the second coloring layer 300 is less likely to affect the local pattern 1200 formed by the second coloring layer 300, which is beneficial to control the local pattern 1200 of the appearance of the outer shell 1000 through the second coloring layer 300.

[0138] In some possible implementations, the thickness of the second coloring layer 300 is greater than or equal to 3 μm.

[0139] Thus, forming the second coloring layer 300 is relatively easy. Furthermore, the formed second coloring layer 300 has a certain thickness, which makes the local pattern 1200 formed by the second coloring layer 300 less prone to defects due to coating defects, resulting in better precision of the formed local pattern 1200. Additionally, the formed second coloring layer 300 has a certain thickness, which reduces its translucency, facilitating the formation of an opaque second coloring layer 300.

[0140] In some possible implementations, the thickness of the second coloring layer 300 is less than or equal to 10 μm.

[0141] In this way, while the second coloring layer 300 can meet the coloring requirements, it can also have a thinner thickness, which is beneficial to the lightweight design of the outer shell 1000.

[0142] For example, the second coloring layer 300 may have one or more colors.

[0143] For example, the color of the second coloring layer 300 may include one or more of the following: solid color, gradient color, fluorescent color, etc.

[0144] The colors of the first coloring layer 200 and the second coloring layer 300 at the edge of the partial pattern 1200 can have a relatively obvious color difference, so as to form a partial pattern 1200 with a relatively clear boundary.

[0145] In some examples, at least a portion of the color of the second color layer 300 is different from the color of the first color layer 200.

[0146] For example, the first coloring layer 200 and the second coloring layer 300 can both be solid-color structural layers, and the color of the first coloring layer 200 is different from the color of the second coloring layer 300.

[0147] In some possible implementations, the thickness of the substrate layer 100 is greater than or equal to 0.2 mm.

[0148] This allows the substrate layer 100 to have high strength, which in turn allows the formed outer shell 1000 to have high strength.

[0149] For example, the thickness of the substrate layer 100 may be greater than or equal to 0.45 mm, thereby increasing the strength of the substrate layer 100 and the formed outer shell 1000.

[0150] In some possible implementations, the substrate layer 100 is less than or equal to 0.8 mm.

[0151] In this way, while the substrate layer 100 has high strength, the thickness of the substrate layer 100 can be relatively thin, which is beneficial to reducing the thickness of the formed shell 1000.

[0152] For example, the thickness of the substrate layer 100 may be less than or equal to 0.55 mm. For instance, the thickness of the substrate layer 100 may be approximately 0.5 mm.

[0153] In some possible implementations, the thickness of the transparent outer coating 400 is greater than or equal to 50 μm.

[0154] This allows the transparent outer coating 400 to have a better soft feel. In addition, it also helps to protect the structural layers inside the transparent outer coating 400.

[0155] In some possible implementations, the transparent outer coating 400 is less than or equal to 250 μm.

[0156] In this way, while the transparent outer layer 400 has a good soft feel and good protective performance, the thickness of the transparent outer layer 400 can be thinner, which is conducive to reducing the thickness of the outer shell 1000.

[0157] like Figure 2 As shown, in some possible embodiments, the multilayer structure layer further includes a flame-retardant layer 500, that is, one of the structural layers in the multilayer structure layer is a flame-retardant layer 500. The flame-retardant layer 500 is disposed inside the first coloring layer 200, the second coloring layer 300, the substrate layer 100 and the transparent outer coating layer 400, and the flame-retardant layer 500 has a flame-retardant function.

[0158] For example, the flame retardant layer 500 can be made of ink, and the flame retardant layer 500 can be a flame retardant ink layer.

[0159] For example, the thickness of the flame retardant layer 500 can be greater than or equal to 5 μm and less than or equal to 15 μm.

[0160] For example, the flame retardant layer 500 can be an opaque structural layer.

[0161] In some possible implementations, the multilayer structure also includes a bottom layer 600, meaning that one of the structural layers in the multilayer structure is the bottom layer 600. The bottom layer 600 is located on the inner surface of the outer casing 1000, that is, the bottom layer 600 is disposed inside the flame-retardant layer 500, the first coloring layer 200, the second coloring layer 300, the substrate layer 100, and the transparent outer covering layer 400. The bottom layer 600 is a structural layer with properties similar to the flame-retardant layer 500, and the bottom layer 600 is used to improve the bonding strength between the flame-retardant layer 500 and other components.

[0162] When the flame retardant layer 500 is made of ink, the bottom layer 600 can also be made of ink. The ink of the flame retardant layer 500 and the ink of the bottom layer 600 are different inks. The bottom layer 600 is the bottom ink layer of the shell.

[0163] For example, the thickness of the bottom layer 600 can be greater than or equal to 5um and less than or equal to 15um.

[0164] For example, the bottom layer 600 can be an opaque structural layer.

[0165] For example, when the outer shell 1000 is the back cover 12, the outer shell 1000 can be bonded to the middle frame 11 through the bottom layer 600, and the bottom layer 600 is used to improve the bonding strength between the flame retardant layer 500 and the middle frame 11.

[0166] In the example where the outer casing 1000 is a protective cover, the outer casing 1000 may also exclude the flame-retardant layer 500 and the bottom layer 600.

[0167] like Figure 2 As shown, in some possible embodiments, the second coloring layer 300 is disposed between the transparent outer cover layer 400 and the first coloring layer 200. The orthographic projection of the second coloring layer 300 on the first coloring layer 200 covers a portion of the first coloring layer 200. That is, a portion of the first coloring layer 200 is not covered by the orthographic projection of the second coloring layer 300 on the first coloring layer 200.

[0168] In this way, a partial pattern 1200 can be formed by covering part of the first colored area with the second colored layer 300. Forming the partial pattern 1200 is relatively easy, which can make the structure of the outer shell 1000 simpler.

[0169] In some possible implementations, the second coloring layer 300 is disposed between the substrate layer 100 and the transparent outer coating layer 400.

[0170] In this way, the second coloring layer 300 used to form the partial pattern 1200 is close to the outer surface of the housing 1000, and the number of structural layers that the partial pattern 1200 needs to pass through to be transmitted to the outer surface of the housing 1000 is smaller, which makes the color of the partial pattern 1200 appearing on the outer surface of the housing 1000 more solid.

[0171] In some possible implementations, the first coloring layer 200 is disposed between the substrate layer 100 and the transparent outer coating layer 400.

[0172] In this way, the first coloring layer 200 used to form the background 1100 is close to the outer surface of the housing 1000, and the number of structural layers that the background 1100 needs to pass through to reach the outer surface of the housing 1000 is smaller, so that the color of the background 1100 displayed on the outer surface of the housing 1000 is more solid.

[0173] In some examples, the second coloring layer 300 is disposed between the transparent outer layer 400 and the first coloring layer 200, and the substrate layer 100 is disposed on the side of the first coloring layer 200 away from the transparent outer layer 400. In this case, the first coloring layer 200 can be printed on one side surface of the substrate layer 100 by printing, covering the substrate layer 100. After the first coloring layer 200 is formed, the second coloring layer 300 is printed on a portion of the surface of the first coloring layer 200 away from the substrate layer 100. When printing the second coloring layer 300, the printing position of the second coloring layer 300 can be controlled by a screen, so that the second coloring layer 300 is printed on a portion of the first coloring layer 200, thereby forming a partial pattern 1200. After the second coloring layer 300 is formed, the transparent outer layer 400 is printed on the surface of the second coloring layer 300 away from the first coloring layer 200 and on the area of ​​the first coloring layer 200 not covered by the second coloring layer 300. If a textured structure 410 needs to be formed on the outer surface of the transparent outer cover 400, a stencil method can be used when printing the transparent outer cover 400 to form the textured structure 410 on the printed transparent outer cover 400. When the outer shell 1000 includes a flame-retardant layer 500 and a bottom layer 600, the flame-retardant layer 500 can be printed on the side of the substrate layer 100 away from the transparent outer cover 400. After the flame-retardant layer 500 is formed, the bottom layer 600 is then printed on the side of the flame-retardant layer 500 away from the substrate layer 100.

[0174] When both the first coloring layer 200 and the second coloring layer 300 are located between the substrate layer 100 and the transparent outer coating layer 400, the substrate layer 100 can be a transparent structural layer or an opaque structural layer. In this case, the substrate layer 100 can be, but is not limited to, a polycarbonate sheet layer, a fiberglass / epoxy resin sheet layer, a polyamide / fiberglass composite sheet layer, or a polycarbonate / fiberglass composite sheet layer.

[0175] Figure 4 This is a schematic diagram of another type of shell provided in an embodiment of this application.

[0176] like Figure 4 As shown, in some possible embodiments, the first coloring layer 200 is disposed on the side of the substrate layer 100 away from the transparent outer cover layer 400, that is, the first coloring layer 200 is disposed on the inner side of the substrate layer 100, and the substrate layer 100 is a transparent structural layer.

[0177] In this way, the background 1100 formed by the first coloring layer 200 is visible on the outer surface of the outer casing 1000 after passing through the substrate layer 100 and the transparent outer coating layer 400, thereby improving the transparency of the visible background 1100. In addition, the thicker substrate layer 100 can protect the first coloring layer 200, making it less susceptible to damage from scratches or other impacts from the outside of the outer casing 1000, resulting in a more reliable background 1100.

[0178] In some examples, the first coloring layer 200 is disposed on the side of the substrate layer 100 away from the transparent outer cover layer 400, and the second coloring layer 300 is disposed between the substrate layer 100 and the transparent outer cover layer 400. In this case, the first coloring layer 200 and the second coloring layer 300 can be printed on both sides of the substrate layer 100 respectively, with the first coloring layer 200 covering the substrate layer 100. When printing the second coloring layer 300, the printing position of the second coloring layer 300 can be controlled by a screen printing plate, so that the second coloring layer 300 is printed on a portion of the substrate layer 100, thereby forming a partial pattern 1200. After the second coloring layer 300 is formed, the transparent outer cover layer 400 is printed on the surface of the second coloring layer 300 away from the substrate layer 100 and on the area of ​​the substrate layer 100 not covered by the second coloring layer 300. If a texture structure 410 needs to be formed on the outer surface of the transparent outer cover layer 400, a stencil printing method can be used when printing the transparent outer cover layer 400 to form the texture structure 410. When the outer casing 1000 includes a flame-retardant layer 500 and a bottom layer 600, the flame-retardant layer 500 can be printed on the side of the first coloring layer 200 away from the substrate layer 100 after the first coloring layer 200 is formed, and the bottom layer 600 can be printed on the side of the flame-retardant layer 500 away from the first coloring layer 200 after the flame-retardant layer 500 is formed.

[0179] Figure 5 This is a schematic diagram of another type of shell provided in an embodiment of this application.

[0180] like Figure 5 As shown, in some possible embodiments, the second coloring layer 300 is disposed on the side of the substrate layer 100 away from the transparent outer cover layer 400, and the substrate layer 100 is a transparent structural layer.

[0181] In this way, the partial pattern 1200 formed by the second coloring layer 300 is visible on the outer surface of the outer casing 1000 after passing through the substrate layer 100 and the transparent outer coating layer 400, thereby improving the transparency of the visible partial pattern 1200. In addition, the thicker substrate layer 100 can protect the second coloring layer 300, making it less susceptible to damage from scratches or other impacts from the outside of the outer casing 1000, thus improving the reliability of the formed partial pattern 1200.

[0182] In some examples, both the first coloring layer 200 and the second coloring layer 300 are disposed on the side of the substrate layer 100 away from the transparent outer cover layer 400, and the second coloring layer 300 is disposed between the first coloring layer 200 and the substrate layer 100. In this case, the second coloring layer 300 can be printed on one side surface of the substrate layer 100 by printing. When printing the second coloring layer 300, the printing position of the second coloring layer 300 can be controlled by a screen, so that the second coloring layer 300 is printed on a part of the substrate layer 100, thereby forming a partial pattern 1200. After the second coloring layer 300 is formed, the first coloring layer 200 is printed on the side surface of the second coloring layer 300 away from the substrate layer 100 and on the area of ​​the substrate layer 100 not covered by the second coloring layer 300. The transparent outer cover layer 400 can be formed by printing on the side surface of the substrate layer 100 away from the first coloring layer 200 and the second coloring layer 300. If a textured structure 410 needs to be formed on the outer surface of the transparent outer cover 400, a stencil method can be used when printing the transparent outer cover 400 to form the textured structure 410. When the outer shell 1000 includes a flame-retardant layer 500 and a bottom layer 600, the flame-retardant layer 500 can be printed on the side of the first coloring layer 200 away from the substrate layer 100 after the first coloring layer 200 is formed, and the bottom layer 600 can be printed on the side of the flame-retardant layer 500 away from the first coloring layer 200 after the flame-retardant layer 500 is formed.

[0183] When at least one of the first coloring layer 200 and the second coloring layer 300 is disposed on the side of the substrate layer 100 away from the transparent outer cover layer 400, the substrate layer 100 needs to be a transparent structural layer, so that the background 1100 and the partial pattern 1200 formed on the side of the substrate layer 100 away from the transparent outer cover layer 400 can be seen through the substrate layer 100 and thus be displayed on the outer surface of the housing 1000.

[0184] When the substrate layer 100 is a transparent structural layer, the transmittance of the substrate layer 100 can be determined according to the requirements. For example, the transmittance of the substrate layer 100 can be 40%, 50%, 60%, 70%, 80%, 90%, etc., as long as the background 1100 and the partial pattern 1200 formed on the side of the substrate layer 100 away from the transparent outer cover layer 400 can be seen through the substrate layer 100 and appear on the outer surface of the outer shell 1000.

[0185] When the substrate layer 100 is a transparent structural layer, the substrate layer 100 can be a polycarbonate layer, so that the substrate layer 100 can have a high transmittance.

[0186] Figure 6 This is a schematic diagram of another type of shell provided in an embodiment of this application.

[0187] like Figure 6As shown, in some possible embodiments, the first coloring layer 200 has a light-transmitting structure 210, and the orthographic projection of the second coloring layer 300 on the first coloring layer 200 covers at least a portion of the light-transmitting structure 210. The second coloring layer 300 is disposed within the light-transmitting structure 210, or the second coloring layer 300 is disposed on the side of the first coloring layer 200 away from the transparent outer cover layer 400.

[0188] In this way, the partial pattern 1200 can be formed through the portion of the second coloring layer 300 located at the light-transmitting structure 210. When the second coloring layer 300 is located within the light-transmitting structure 210, it helps to reduce the thickness of the outer casing 1000. When the second coloring layer 300 is located on the side of the first coloring layer 200 away from the transparent outer covering layer 400, the first coloring layer 200 can protect the second coloring layer 300, making the second coloring layer 300 less susceptible to damage from scratches or other impacts from the outside of the outer casing 1000, resulting in better reliability of the formed partial pattern 1200.

[0189] In some possible implementations, the light-transmitting structure 210 is a perforated structure.

[0190] In this way, it is easier to form the light-transmitting structure 210, which helps to reduce the number of process steps in forming the outer shell 1000 and reduce the cost of manufacturing the outer shell 1000.

[0191] When the light-transmitting structure 210 is a perforated structure, the light-transmitting structure 210 can contain material for forming a structural layer adjacent to the first coloring layer 200.

[0192] For example, the light-transmitting structure 210 with a perforated structure can be formed by printing the first coloring layer 200 using a screen, and the portion blocked by the screen can form the light-transmitting structure 210.

[0193] In other possible implementations, the light-transmitting structure 210 can also be formed by applying a transparent material to a designated area using methods such as printing or spraying.

[0194] In some possible implementations, the orthographic projection of the second coloring layer 300 onto the first coloring layer 200 covers a portion of the light-transmitting structure 210, that is, a portion of the light-transmitting structure 210 is not covered by the orthographic projection of the second coloring layer 300 onto the first coloring layer 200.

[0195] For example, the second coloring layer 300 and the first coloring layer 200 are arranged in a staggered manner on the layer where the first coloring layer 200 is located.

[0196] When the light-transmitting structure 210 is a perforated structure and the second coloring layer 300 and the first coloring layer 200 are arranged in a staggered manner on the layer where the first coloring layer 200 is located, the second coloring layer 300 is disposed inside the light-transmitting structure 210.

[0197] In some examples, a first coloring layer 200 is disposed between a substrate layer 100 and a transparent outer cover layer 400. The first coloring layer 200 has a light-transmitting structure 210, which is a porous structure. A second coloring layer 300 is disposed between the substrate layer 100 and the transparent outer cover layer 400. The orthographic projection of the second coloring layer 300 onto the first coloring layer 200 covers a portion of the light-transmitting structure 210. The second coloring layer 300 is disposed within the light-transmitting structure 210, which may also contain material for forming the transparent outer cover layer 400. At this point, a second coloring layer 300 can be printed on one side of the substrate layer 100. During printing, the printing position of the second coloring layer 300 can be controlled using a screen, ensuring that the second coloring layer 300 is printed on a portion of the substrate layer 100. After the second coloring layer 300 is formed, a first coloring layer 200 is printed on the side of the substrate layer 100 where the second coloring layer 300 is printed but not covered. During printing, the printing position of the first coloring layer 200 can be controlled using a screen to form a light-transmitting structure 210 with a perforated structure, and the second coloring layer 300 is positioned within the light-transmitting structure 210. A partial pattern 1200 is formed through the second coloring layer 300 and the light-transmitting structure 210. After the first coloring layer 200 is formed, a transparent outer coating layer 400 is printed on the side of the first coloring layer 200 facing away from the substrate layer 100. If a textured structure 410 needs to be formed on the outer surface of the transparent outer cover 400, a stencil method can be used when printing the transparent outer cover 400 to form the textured structure 410 on the printed transparent outer cover 400. When the outer shell 1000 includes a flame-retardant layer 500 and a bottom layer 600, the flame-retardant layer 500 can be printed on the side of the substrate layer 100 away from the transparent outer cover 400. After the flame-retardant layer 500 is formed, the bottom layer 600 is then printed on the side of the flame-retardant layer 500 away from the substrate layer 100.

[0198] Figure 7 This is a schematic diagram of another type of shell provided in an embodiment of this application.

[0199] like Figure 7 As shown, in some other possible embodiments, the second coloring layer 300 is projected onto the first coloring layer 200 to cover the light-transmitting structure 210.

[0200] In this way, the resulting local pattern 1200 has high precision.

[0201] In some examples where the orthographic projection of the second coloring layer 300 onto the first coloring layer 200 covers the light-transmitting structure 210, the area of ​​the orthographic projection of the second coloring layer 300 onto the first coloring layer 200 is larger than the area of ​​the light-transmitting structure 210.

[0202] In this way, the shape of the local pattern 1200 can be controlled by the light-transmitting structure 210, the alignment requirements of the first coloring layer 200 and the second coloring layer 300 are lower, and the outer shell 1000 is easier to form.

[0203] In some examples, the orthographic projection of the second shading layer 300 onto the first shading layer 200 covers a portion of the first shading layer 200, that is, a portion of the first shading layer 200 is not covered by the orthographic projection of the second shading layer 300 onto the first shading layer 200.

[0204] In some examples, a first coloring layer 200 is disposed between a substrate layer 100 and a transparent outer cover layer 400. The first coloring layer 200 has a light-transmitting structure 210, which is a perforated structure. A second coloring layer 300 is disposed between the substrate layer 100 and the transparent outer cover layer 400. The orthographic projection of the second coloring layer 300 onto the first coloring layer 200 covers a portion of the first coloring layer 200 and also covers the light-transmitting structure 210. The second coloring layer 300 is disposed on the side of the first coloring layer 200 away from the transparent outer cover layer 400. The light-transmitting structure 210 may contain material for forming the transparent outer cover layer 400. At this point, a second coloring layer 300 can be printed on one side of the substrate layer 100. During printing, the printing position of the second coloring layer 300 can be controlled by a screen, ensuring that the second coloring layer 300 is printed on a portion of the substrate layer 100. After the second coloring layer 300 is formed, a first coloring layer 200 is printed on the area of ​​the substrate layer 100 where the second coloring layer 300 is printed but not covered, and on a portion of the surface of the second coloring layer 300 facing away from the substrate layer 100. During printing, the printing position of the first coloring layer 200 can be controlled by a screen to form a light-transmitting structure 210 with a perforated structure, and the second coloring layer 300 covers the light-transmitting structure 210. A partial pattern 1200 is formed through the second coloring layer 300 and the light-transmitting structure 210. After the first coloring layer 200 is formed, a transparent outer layer 400 is printed on the surface of the first coloring layer 200 facing away from the substrate layer 100. If a textured structure 410 needs to be formed on the outer surface of the transparent outer cover 400, a stencil method can be used when printing the transparent outer cover 400 to form the textured structure 410 on the printed transparent outer cover 400. When the outer shell 1000 includes a flame-retardant layer 500 and a bottom layer 600, the flame-retardant layer 500 can be printed on the side of the substrate layer 100 away from the transparent outer cover 400. After the flame-retardant layer 500 is formed, the bottom layer 600 is then printed on the side of the flame-retardant layer 500 away from the substrate layer 100.

[0205] Figure 8 This is a schematic diagram of another type of shell provided in an embodiment of this application.

[0206] like Figure 8 As shown, in some possible implementations, the orthographic projection of the second coloring layer 300 onto the first coloring layer 200 covers the first coloring layer 200.

[0207] In this way, the second coloring layer 300 can be laid continuously, and the second coloring layer 300 is easier to form. In addition, the alignment requirements between the first coloring layer 200 and the second coloring layer 300 can be further reduced, making the outer shell 1000 easier to form.

[0208] In some examples, a first coloring layer 200 is disposed between a substrate layer 100 and a transparent outer cover layer 400. The first coloring layer 200 has a light-transmitting structure 210, which is a perforated structure. A second coloring layer 300 is disposed between the substrate layer 100 and the transparent outer cover layer 400. The orthographic projection of the second coloring layer 300 onto the first coloring layer 200 covers the first coloring layer 200. The second coloring layer 300 is disposed on the side of the first coloring layer 200 away from the transparent outer cover layer 400. The light-transmitting structure 210 may contain material for forming the transparent outer cover layer 400. At this point, a second coloring layer 300 can be printed on one side of the substrate layer 100 by printing. The second coloring layer 300 covers the substrate layer 100. After the second coloring layer 300 is formed, a first coloring layer 200 is printed on a portion of the surface of the second coloring layer 300 facing away from the substrate layer 100. When printing the first coloring layer 200, the printing position of the first coloring layer 200 can be controlled by a screen to form a light-transmitting structure 210 with a perforated structure. A local pattern 1200 is formed through the second coloring layer 300 and the light-transmitting structure 210. After the first coloring layer 200 is formed, a transparent outer coating layer 400 is printed on the surface of the first coloring layer 200 facing away from the substrate layer 100. If a textured structure 410 needs to be formed on the outer surface of the transparent outer coating layer 400, a stencil printing method can be used when printing the transparent outer coating layer 400 to form the textured structure 410. When the outer shell 1000 includes a flame-retardant layer 500 and a bottom layer 600, the flame-retardant layer 500 can be printed on the surface of the substrate layer 100 away from the transparent outer cover layer 400. After the flame-retardant layer 500 is formed, the bottom layer 600 is printed on the surface of the flame-retardant layer 500 away from the substrate layer 100.

[0209] Figure 9 This is a schematic diagram of another type of shell provided in an embodiment of this application.

[0210] like Figure 9As shown, in some examples, a first coloring layer 200 is disposed between a substrate layer 100 and a transparent outer cover layer 400. The first coloring layer 200 has a light-transmitting structure 210, which is a perforated structure. A second coloring layer 300 is disposed on the side of the substrate layer 100 away from the transparent outer cover layer 400. The orthographic projection of the second coloring layer 300 onto the first coloring layer 200 covers a portion of the first coloring layer 200 and also covers the light-transmitting structure 210. The light-transmitting structure 210 can contain material for forming the transparent outer cover layer 400. At this point, a first coloring layer 200 and a second coloring layer 300 can be formed on opposite sides of the substrate layer 100 by printing. When printing the second coloring layer 300, the printing position can be controlled by a screen, ensuring the second coloring layer 300 is printed on a portion of the substrate layer 100. Similarly, when printing the first coloring layer 200, the printing position can be controlled by a screen, ensuring the first coloring layer 200 is printed on a portion of the substrate layer 100, forming a light-transmitting structure 210 with a perforated structure. The second coloring layer 300 then covers the light-transmitting structure 210, forming a partial pattern 1200. After the first coloring layer 200 is formed, a transparent outer layer 400 is printed on the side of the first coloring layer 200 facing away from the substrate layer 100. If a textured structure 410 needs to be formed on the outer surface of the transparent outer cover 400, a stencil method can be used when printing the transparent outer cover 400 to form the textured structure 410. When the outer shell 1000 includes a flame-retardant layer 500 and a bottom layer 600, after the second coloring layer 300 is formed, the flame-retardant layer 500 is printed on the side of the second coloring layer 300 away from the substrate layer 100 and on the area of ​​the substrate layer 100 not covered by the second coloring layer 300. After the flame-retardant layer 500 is formed, the bottom layer 600 is printed on the side of the flame-retardant layer 500 away from the substrate layer 100.

[0211] Figure 10 This is a schematic diagram of another type of shell provided in an embodiment of this application.

[0212] like Figure 10As shown, in some examples, a first coloring layer 200 is disposed between a substrate layer 100 and a transparent outer coating layer 400. The first coloring layer 200 has a light-transmitting structure 210, which is a perforated structure. A second coloring layer 300 is disposed on the side of the substrate layer 100 away from the transparent outer coating layer 400. The orthographic projection of the second coloring layer 300 onto the first coloring layer 200 covers the first coloring layer 200. The light-transmitting structure 210 can contain material for forming the transparent outer coating layer 400. In this case, the first coloring layer 200 and the second coloring layer 300 can be formed on opposite surfaces of the substrate layer 100 by printing. The second coloring layer 300 covers the substrate layer 100. When printing the first coloring layer 200, the printing position of the first coloring layer 200 can be controlled by a screen, so that the first coloring layer 200 is printed on a portion of the substrate layer 100 to form the light-transmitting structure 210, which is a perforated structure. A partial pattern 1200 is formed through the second coloring layer 300 and the light-transmitting structure 210. After the first coloring layer 200 is formed, a transparent outer coating layer 400 is printed on the surface of the first coloring layer 200 facing away from the substrate layer 100. If a textured structure 410 needs to be formed on the outer surface of the transparent outer coating layer 400, a stencil printing method can be used to form the textured structure 410 on the printed transparent outer coating layer 400. When the outer shell 1000 includes a flame-retardant layer 500 and a bottom layer 600, after the second coloring layer 300 is formed, a flame-retardant layer 500 is printed on the surface of the second coloring layer 300 facing away from the substrate layer 100. After the flame-retardant layer 500 is formed, a bottom layer 600 is printed on the surface of the flame-retardant layer 500 away from the substrate layer 100.

[0213] Figure 11 This is a schematic diagram of another type of shell provided in an embodiment of this application.

[0214] like Figure 11As shown, in some examples, the first coloring layer 200 is disposed on the side of the substrate layer 100 away from the transparent outer cover layer 400. The first coloring layer 200 has a light-transmitting structure 210, which is a perforated structure. The second coloring layer 300 is disposed on the side of the first coloring layer 200 away from the transparent outer cover layer 400. The orthographic projection of the second coloring layer 300 on the first coloring layer 200 covers a portion of the first coloring layer 200 and covers the light-transmitting structure 210. The light-transmitting structure 210 can contain material for forming the second coloring layer 300. At this point, a first coloring layer 200 can be printed on one side of the substrate layer 100. During printing, the printing position of the first coloring layer 200 can be controlled using a screen printing plate, so that the first coloring layer 200 is printed on a portion of the substrate layer 100 to form a light-transmitting structure 210 with a porous structure. After the first coloring layer 200 is formed, a second coloring layer 300 is printed on the side of the first coloring layer 200 away from the substrate layer. During printing, the printing position of the second coloring layer 300 can be controlled using a screen printing plate, so that the second coloring layer 300 covers a portion of the first coloring layer 200 and the light-transmitting structure 210, forming a partial pattern 1200. A transparent outer coating layer 400 can be formed by printing on the side of the substrate layer 100 away from the first and second coloring layers 200. If a textured structure 410 needs to be formed on the outer surface of the transparent outer cover 400, a stencil method can be used when printing the transparent outer cover 400 to form the textured structure 410. When the outer shell 1000 includes a flame-retardant layer 500 and a bottom layer 600, after the second coloring layer 300 is formed, the flame-retardant layer 500 is printed on the side of the second coloring layer 300 away from the substrate layer 100 and in the area of ​​the first coloring layer 200 not covered by the second coloring layer 300. After the flame-retardant layer 500 is formed, the bottom layer 600 is printed on the side of the flame-retardant layer 500 away from the substrate layer 100.

[0215] Figure 12 This is a schematic diagram of another type of shell provided in an embodiment of this application.

[0216] like Figure 12As shown, in some examples, the first coloring layer 200 is disposed on the side of the substrate layer 100 away from the transparent outer cover layer 400. The first coloring layer 200 has a light-transmitting structure 210, which is a perforated structure. The second coloring layer 300 is disposed on the side of the first coloring layer 200 away from the transparent outer cover layer 400. The orthographic projection of the second coloring layer 300 onto the first coloring layer 200 covers the first coloring layer 200. The light-transmitting structure 210 can contain material for forming the second coloring layer 300. At this point, a first coloring layer 200 can be printed on one side of the substrate layer 100. During printing, the printing position of the first coloring layer 200 can be controlled using a screen printing plate, ensuring that the first coloring layer 200 is printed on a portion of the substrate layer 100 to form a light-transmitting structure 210 with a porous structure. After the first coloring layer 200 is formed, a second coloring layer 300 is printed on the side of the first coloring layer 200 away from the substrate layer, covering the first coloring layer 200. A partial pattern 1200 is formed through the second coloring layer 300 and the light-transmitting structure 210. A transparent outer coating 400 can be formed on the side of the substrate layer 100 away from the first and second coloring layers 200 by printing. If a textured structure 410 needs to be formed on the outer surface of the transparent outer coating 400, a printing method can be used to form the textured structure 410 on the printed transparent outer coating 400. When the outer casing 1000 includes a flame-retardant layer 500 and a bottom layer 600, after the second coloring layer 300 is formed, the flame-retardant layer 500 is printed on the side of the second coloring layer 300 away from the substrate layer 100. After the flame-retardant layer 500 is formed, the bottom layer 600 is printed on the side of the flame-retardant layer 500 away from the substrate layer 100.

[0217] The devices or elements referred to in the embodiments of this application or implied herein must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of this application. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0218] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the present application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0219] The term "multiple" in this article refers to two or more. The term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Furthermore, the character " / " in this article generally indicates an "or" relationship between the preceding and following related objects; in formulas, the character " / " indicates a "division" relationship between the preceding and following related objects.

[0220] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application.

[0221] It is understood that, in the embodiments of this application, the order of the above-mentioned process numbers does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

Claims

1. A housing (1000) characterized by, The multi-layer structure layer comprises a substrate layer (100), a first colored layer (200), a second colored layer (300), and a transparent outer cover layer (400), the substrate layer (100), the first colored layer (200), and the second colored layer (300) are all arranged on the inner side of the transparent outer cover layer (400), the transparent outer cover layer (400) is a soft structure layer, the first colored layer (200) is used to form a background (1100) of the appearance of the outer shell (1000), and the second colored layer (300) is used to form a local pattern (1200) of the appearance of the outer shell (1000). The second colored layer (300) is arranged between the transparent outer cover layer (400) and the first colored layer (200), and the orthographic projection of the second colored layer (300) on the first colored layer (200) covers part of the area of the first colored layer (200).

2. The housing (1000) of claim 1, wherein, The first colored layer (200) has a light-transmitting structure (210), and the orthographic projection of the second colored layer (300) on the first colored layer (200) covers at least part of the light-transmitting structure (210).

3. The housing (1000) of claim 1, wherein, The second colored layer (300) is arranged in the light-transmitting structure (210), or the second colored layer (300) is arranged on the side of the first colored layer (200) away from the transparent outer cover layer (400). The orthographic projection of the second colored layer (300) on the first colored layer (200) covers the light-transmitting structure (210), and the area of the orthographic projection of the second colored layer (300) on the first colored layer (200) is greater than the area of the light-transmitting structure (210).

4. The housing (1000) of claim 3, wherein, The orthographic projection of the second colored layer (300) on the first colored layer (200) covers the first colored layer (200).

5. The housing (1000) of claim 4, wherein, The light-transmitting structure (210) is a hole structure.

6. The housing (1000) of claim 3, wherein, The first colored layer (200) is arranged between the substrate layer (100) and the transparent outer cover layer (400).

7. The housing (1000) of claim 1, wherein, The first colored layer (200) is arranged on the side of the substrate layer (100) away from the transparent outer cover layer (400), and the substrate layer (100) is a transparent structure layer.

8. The housing (1000) of claim 1, wherein, The second colored layer (300) is arranged between the substrate layer (100) and the transparent outer cover layer (400).

9. The enclosure (1000) of claim 1, wherein, The second colored layer (300) is arranged on the side of the substrate layer (100) away from the transparent outer cover layer (400), and the substrate layer (100) is a transparent structure layer.

10. The housing (1000) of claim 1, wherein, The outer surface of the transparent outer cover layer (400) has a texture structure (410).

11. The enclosure (1000) of claim 1, wherein, The material of the transparent outer cover layer (400) comprises at least one of polyurethane, silicone, and acrylic acid.

12. The housing (1000) of claim 1, wherein, The thickness of the first colored layer (200) is greater than or equal to 5 um and less than or equal to 15 um.

13. The housing (1000) of claim 1, wherein, The thickness of the second colored layer (300) is greater than or equal to 3 um and less than or equal to 10 um.

14. The enclosure (1000) of claim 1, wherein, The thickness of the substrate layer (100) is greater than or equal to 0.2 mm and less than or equal to 0.8 mm.

15. The enclosure (1000) of claim 1, wherein, ​ 16. The enclosure (1000) of claim 1, wherein, The transparent outer cover layer (400) has a thickness greater than or equal to 50 um and less than or equal to 250 um.

17. The housing (1000) according to any one of claims 1-16, characterized in that, The outer shell (1000) is an outer shell of an electronic device, or the outer shell (1000) is a protective sleeve for being sleeved outside an electronic device.

18. An electronic device, comprising: comprising a first outer shell; The first outer shell is the outer shell (1000) according to any one of claims 1-16.

19. An electronic device assembly, comprising: comprising an electronic device and a second outer shell, the second outer shell being a protective sleeve for being sleeved outside the electronic device; The second outer shell is the outer shell (1000) according to any one of claims 1-16.

20. The electronic device assembly of claim 19, wherein, The electronic device is the electronic device according to claim 18.

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