Shell, manufacturing method thereof and electronic equipment

Abstract

The invention provides a shell, a manufacturing method thereof and electronic equipment, the shell comprises a shell base material and a hardened layer which are arranged in a stacked mode, the surface, away from the shell base material, of the hardened layer is provided with a texture area, and the dyne value of the texture area is larger than or equal to 36. The texture area is arranged on the surface of the hardened layer in the shell, so that the dyne value of the texture area can be increased while the loss of the texture in the texture area on the mechanical strength of the shell is reduced, and the dyne value of the texture area is stabilized at 36 or above, so that stable bonding of the decorative part and the shell is met, and the user experience is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electronic equipment, and in particular to a housing and a manufacturing method thereof, and an electronic device. Background Art

[0002] During the design of the exterior structure of electronic devices, it is sometimes necessary to attach decorative parts to the housing of the electronic device for modification, or users may need to affix decorative parts to the housing for decoration. Currently, the outer surface of the housing is usually provided with a protective layer or anti-fouling layer to protect the housing. Due to the relatively smooth surface of these materials, decorative parts are prone to falling off after being attached to the housing over time, resulting in a poor user experience. Summary of the Invention

[0003] In order to overcome the problems existing in the related art, the present disclosure provides a housing and a manufacturing method thereof, and an electronic device.

[0004] According to a first aspect of the present disclosure, a shell is provided, comprising a shell substrate and a hardened layer arranged in a stacked manner, wherein a textured region is provided on a surface of the hardened layer facing away from the shell substrate, and a dyne value of the textured region is greater than or equal to 36.

[0005] In some embodiments of the present disclosure, the texture region includes a plurality of openings, the depth of the openings is 10 μm-30 μm, and / or the width of the openings is 2 mm-5 mm.

[0006] In some embodiments of the present disclosure, the thickness of the hardened layer is 6 μm-12 μm, the bottom surface of the opening is arranged inside the hardened layer, and / or the bottom surface of the opening is arranged inside the shell substrate.

[0007] In some embodiments of the present disclosure, the ratio of the depth of the opening to the thickness of the shell is 0.010-0.078.

[0008] In some embodiments of the present disclosure, the material of the shell substrate includes one or more of glass, ceramic, microcrystalline glass, and composite materials.

[0009] In some embodiments of the present disclosure, the composite material includes a first substrate and a second substrate stacked together, the first substrate includes PMMA, the second substrate includes PC, and the first substrate is tightly attached to the hardened layer.

[0010] In some embodiments of the present disclosure, the shell further includes a pattern layer, a light refraction layer, and an ink layer stacked in sequence, and the pattern layer is arranged on a surface of the shell substrate facing away from the hardening layer.

[0011] According to a second aspect of the present disclosure, a method for manufacturing a housing is provided, the method comprising:

[0012] forming a hardened layer, wherein the hardened layer covers one side surface of the shell substrate;

[0013] A texture is formed in a target area of ​​the hardened layer on a surface facing away from the shell substrate to obtain a textured area, wherein a dyne value of the textured area is greater than or equal to 36.

[0014] In some embodiments of the present disclosure, forming a texture in a target area of ​​the hardened layer facing away from the shell substrate to obtain a textured area includes:

[0015] Under a first preset condition, the target area is laser engraved to form the texture area.

[0016] In some embodiments of the present disclosure, the first preset condition includes: marking speed: 1400 mm / s-1800 mm / s; and / or,

[0017] Jump speed: 1900mm / s-2100mm / s; and / or,

[0018] Marking frequency: 25kHz-30kHz; and / or,

[0019] Laser power: 23%-25%.

[0020] In some embodiments of the present disclosure, the method for manufacturing the housing further includes:

[0021] forming a pattern layer, wherein the pattern layer covers a surface of the housing substrate facing away from the hardened layer;

[0022] forming a light refraction layer, wherein the light refraction layer covers the pattern layer;

[0023] An ink layer is formed, and the ink layer covers the light refraction layer.

[0024] According to a third aspect of the present disclosure, an electronic device is provided, comprising the housing provided by the first aspect of the present disclosure.

[0025] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: a textured area is set on the surface of the hardened layer in the shell, which can reduce the loss of mechanical strength of the shell caused by the texture in the textured area while improving the dyne value of the textured area, so that the dyne value of the textured area is stabilized at 36 or above, thereby meeting the stable bonding between the decorative parts and the shell and improving the user experience.

[0026] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0028] Figure 1 is a schematic diagram of a housing according to an exemplary embodiment.

[0029] Figure 2 1 is a measurement result of texture areas of multiple shells according to an exemplary embodiment.

[0030] Figure 3 is a schematic diagram of a housing according to another exemplary embodiment.

[0031] Figure 4 is a schematic diagram of a housing according to another exemplary embodiment.

[0032] Figure 5 The figure is a flow chart of a method for manufacturing a housing according to an exemplary embodiment. DETAILED DESCRIPTION

[0033] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. In the following description, when referring to the drawings, like numbers in different figures represent like or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present invention, as detailed in the appended claims.

[0034] During the design of the exterior structure of an electronic device, it is sometimes necessary to attach decorative parts to the housing of the electronic device for modification, or the user may also need to attach decorative parts to the housing for decoration. A stable and secure bond between the decorative parts and the housing is only achieved when the housing's dyne value is in a relatively high range. For example, to reduce the thickness of an electronic device, the camera assembly often protrudes from the surface of the housing when installed. To decorate and protect the camera assembly, a camera decorative part is typically attached to the surface of the housing surrounding the camera assembly. This area requires a relatively high dyne value to ensure stable adhesion of the camera decorative part.

[0035] Currently, the outer surface of a housing is typically protected by a protective layer or anti-fouling layer. Due to the relatively smooth surface of these materials, the housing's dyne value is low. After being bonded to the housing, decorative parts tend to fall off over time, resulting in a poor user experience. Existing techniques typically apply a partial masking spray coating to the housing surface to create an uneven surface and improve the housing's dyne value. However, this partial masking spray coating method cannot stably control the spray coating area, resulting in a stable dyne value for the housing, typically reaching only around 32.

[0036] In view of this, the present disclosure provides a housing, comprising a stacked housing substrate and a hardened layer, wherein a textured region is provided on a surface of the hardened layer facing away from the housing substrate, and the textured region has a dyne value greater than or equal to 36. The present disclosure provides a textured region on the surface of the hardened layer in the housing, thereby reducing the loss of mechanical strength of the housing caused by the texture in the textured region while increasing the dyne value of the textured region, so that the dyne value of the textured region is stabilized at 36 or above, thereby ensuring stable bonding between the decorative part and the housing and improving the user experience.

[0037] An exemplary embodiment of the present disclosure provides a housing, Figure 1 As shown, Figure 1 Figure 1 is a schematic diagram of a housing according to an exemplary embodiment. Housing 100 includes a stacked housing substrate 10 and a hardening layer 20. Housing substrate 10 serves as the primary material of housing 100, ensuring that housing 100 has excellent mechanical strength and mechanical properties. Housing substrate 10 may be formed of, for example, ceramic, glass, glass-ceramic, metals such as aluminum alloys or titanium alloys, composite materials such as PMMA (poly(methyl methacrylate)) or ABS (Acrylonitrile Butadiene Styrene), fiber-reinforced materials, and the like.

[0038] The housing substrate 10 may be a plate-like structure comprising a first surface 11 and a second surface 12 disposed opposite each other. The first surface 11 may be the side surface closest to the user, such that the hardened layer 20, disposed in close contact with the first surface 11, serves as the surface in direct contact with the user. The second surface 12 of the housing substrate 10 may be bonded to the main structure of the electronic device, such as the battery of the electronic device. For example, the thickness of the housing substrate 10 may be between 0.35 mm and 1.0 mm to ensure that the housing 100 has good reliability and mechanical properties.

[0039] The hardening layer 20 is stacked with the shell substrate 10. As the surface in contact with the user, the hardening layer 20 can improve the hardness of the shell 100, has a certain anti-wear and anti-scratch effect, and protects the shell substrate 10. In some examples, the hardness of the surface of the shell 100 with the hardening layer 20 can reach 3-5 Mohs hardness. The hardening layer 20 can also reduce the surface energy of the shell 100, so that when the user touches the hardening layer 20, it is not easy to leave fingerprints and dirt. The forming material of the hardening layer 20 can include but is not limited to silicone coatings, fluorocarbons, acrylates, epoxy resins, etc. In some examples, the forming material of the hardening layer 20 can include PPG's ECP510 model epoxy resin. Exemplarily, the thickness of the hardening layer 20 can be between 6μm and 12μm, which can achieve a good hardening protection effect while avoiding increasing the thickness of the shell 100.

[0040] refer to Figure 1 , the surface of the hardened layer 20 facing away from the shell substrate 10 is provided with a textured area 21, that is, the surface of the hardened layer 20 on the side in contact with the user is provided with a textured area 21, and a plurality of textures or a variety of textures are provided in the textured area 21, and the shape of the texture may include but is not limited to dot texture, strip texture, wavy texture, V-shaped texture, etc., so that the dyne value of the textured area 21 is greater than or equal to 36. Dyne is a unit used to represent force. The dyne value can also be called surface tension or surface tension coefficient. It refers to the force between two adjacent parts of the liquid surface that pull each other per unit length. The unit is Newton / meter (N / m) or dyne / centimeter (dyn / cm). The higher the dyne value of the material surface, the easier it is for the surface of the material to be colored or adhered. In the present disclosure, the dyne value of the textured area 21 is in a higher range, which can form a stable and firm bond between the decorative part and the textured area 21. When the decorative piece is bonded to the textured area 21 , the adhesive on the decorative piece can more easily fit with the surface of the textured area 21 . At the same time, the adhesive on the decorative piece can also be embedded in the texture of the textured area 21 , so that the decorative piece and the textured area 21 form a firm bond.

[0041] It is understood that the textured area 21 may be any location or area on the surface of the hardened layer 20, and the textured area 21 may be the area on the surface of the hardened layer 20 where the decorative piece is to be bonded. In some examples, the textured area 21 may comprise the entire outer surface of the housing 100, ensuring that when a user desires to affix a decorative piece to the outer surface of the housing 100, the decorative piece can be stably affixed to the housing 100. In other examples, the textured area 21 may be located around the area of ​​the housing 100 where the camera is positioned, ensuring that when a camera decorative piece is applied to the textured area 21, the camera decorative piece is securely bonded, maintaining its decorative and protective function.

[0042] In some possible implementations, reference Figure 1 As shown, in the thickness direction of the housing 100, the textured region 21 includes a plurality of openings 22. The openings 22 can be arranged in any shape, such as a spindle, an inverted trapezoid, a rectangle, an inverted triangle, or an irregular shape. When viewed from above the housing 100, the plurality of openings 22 are distributed in the textured region 21, i.e., they appear as a texture in the textured region 21. The textured shape of the openings 22 can be any, such as dotted grooves, striped textures, wavy textures, V-shaped textures, etc. It is understood that the plurality of openings 22 can be distributed in any manner within the textured region 21, such as in an array or in a random orientation.

[0043] In some examples, reference Figure 1 and Figure 2 As shown, Figure 2 This is a schematic diagram of the measurement results of the texture area 21 of 40 shell 100 samples. An opening 22 is randomly selected from the four directions of up, down, left and right in the texture area 21 of each shell 100, and the depth and width of each opening 22 are measured. The depth of the opening 22 is the distance between the surface of the hardened layer 20 and the bottom surface of the opening 22. The depth of the opening 22 can be controlled between 10μm and 30μm, which can reduce the loss of mechanical strength of the texture area 21. At the same time, the difference between the depths of the multiple openings 22 in the texture area 21 can be controlled within 20μm, that is, the multiple openings 22 in the texture area 21 have good depth stability, so that the dyne value in the texture area 21 has good uniformity and stability.

[0044] Furthermore, the dyne values ​​of the textured regions 21 of the plurality of housings 100 are measured multiple times, and the maximum dyne value and the minimum dyne value of each textured region 21 are recorded. Figure 2 As shown, the average value of the dyne value of the texture area 21 of each shell 100 can be greater than or equal to 36, and the difference between the maximum and minimum values ​​is less than or equal to 2, which can indicate that the texture area 21 of the shell 100 has a high level of dyne value with good uniformity.

[0045] In some examples, the width of opening 22 can be controlled between 2 mm and 5 mm. A larger width of opening 22 allows the bottom surface of opening 22 to be fully exposed to textured region 21, thereby increasing the dyne value of textured region 21. Furthermore, a larger width of opening 22 allows the adhesive on the decorative piece to fully contact opening 22 in textured region 21 when the decorative piece is bonded to the textured region 21, thereby enhancing the bonding strength of the decorative piece.

[0046] In some examples, the depth of the opening 22 can be controlled between 10 μm and 30 μm, and the width of the opening 22 can be controlled between 2 mm and 5 mm, that is, the multiple openings 22 in the texture area 21 are shallow and wide openings, so that the dyne value of the texture area 21 is higher while reducing the impact of the texture area 21 on the smooth touch of the user's touch shell 100.

[0047] In some examples, reference Figure 1 As shown, since the depth of the openings 22 is between 10μm and 30μm, the thickness of the hardened layer 20 is between 6μm and 12μm. In the textured region 21, the bottom surface of some or all of the openings 22 is located within the housing substrate 10. In other words, some openings 22 may penetrate the hardened layer 20, while others may penetrate the hardened layer 20 and form openings on the surface of the housing substrate 10. Thus, compared to the smoother hardened layer 20, the openings 22 exposing the housing substrate 10 can increase the roughness of the textured region 21, resulting in a higher dyne value.

[0048] In some examples, reference Figure 1 As shown, since the depth of the openings 22 is between 10 μm and 30 μm, and the thickness of the hardened layer 20 is between 6 μm and 12 μm, in the textured region 21, the bottom surfaces of some or all of the openings 22 are disposed within the hardened layer 20. In other words, the openings 22 do not penetrate the hardened layer 20. Therefore, the mechanical properties of the housing 100 are not substantially negatively affected.

[0049] In some examples, reference Figure 1 As shown, the ratio of the depth of the opening 22 to the thickness of the shell 100 is controlled to be between 0.010-0.078, that is, the depth of the opening 22 only accounts for 1.0%-7.8% of the thickness of the shell 100. In this way, the ratio of the depth of the opening 22 to the thickness of the shell 100 is small, and setting the texture area 21 will not have a significant impact on the mechanical properties and reliability of the shell 100.

[0050] In some possible implementations, reference Figure 3 As shown, when the material forming the shell substrate 10 includes a composite material, the composite material forming the shell substrate 10 includes a first substrate 13 and a second substrate 14 that are stacked, and the material forming the first substrate 13 includes one or more of PMMA, ABS, PET (Poly (ethylene terephthalate)), and PVC (Polyvinyl chloride); the material forming the second substrate 14 includes one or more of PC (Polycarbonate), ABS, PET, and PVC.

[0051] In some examples, since PMMA has good hardness and wear resistance, and PC has good toughness, the material of the first substrate 13 on the side surface in contact with the user can be set to include PMMA, and the material of the second substrate 14 as the inner surface of the shell 100 includes PC. In this way, the shell substrate 10 has good hardness, wear resistance and toughness at the same time, so that the shell 100 has good reliability and durability. Since the hardening layer 20 serves as the appearance surface of the shell 100, the hardening layer 20 is tightly arranged with the first substrate 13 of the shell substrate 10. In some examples, when the thickness of the shell substrate 10 is about 500μm, the thickness of the first substrate 13 can be between 40μm-60μm, and the thickness of the second substrate 14 can be between 440μm-460μm, and the first substrate 13 and the second substrate 14 can be bonded by a hot pressing process.

[0052] In some possible implementations, reference Figure 4 As shown, when the material of the housing substrate 10 in the housing 100 is light-transmissive, in order to enhance the appearance of the housing 100 for the user, the housing 100 includes, in addition to the housing substrate 10 and the hardening layer 20, a stacked pattern layer 30, a light refraction layer 40, and an ink layer 50. The pattern layer 30 is disposed on the surface of the housing substrate 10 facing away from the hardening layer 20, so that the housing substrate 10 and the hardening layer 20 can provide protection for the pattern layer 30, the light refraction layer 40, and the ink layer 50.

[0053] The pattern layer 30 may include a pattern and / or texture pre-designed by a technician. The pattern layer 30 may be formed on the surface of the shell substrate 10 facing away from the hardened layer 20 by using ink using an offset printing process, a silk screen printing process, a pad printing process, or a transfer process. Alternatively, the pattern layer 30 may be formed by coating a layer of transparent UV (Ultra violet) glue on the surface of the shell substrate 10 and then performing an embossing process on the UV glue to form an embossed texture on the surface of the shell substrate 10, so that the UV glue with the embossed texture forms the pattern layer 30.

[0054] For the hardened layer 20, the shell substrate 10, and the pattern layer 30, the transmittance, reflectivity, and refractive index of light on these layers of materials are fixed. However, due to the wave-particle duality of light, it has the superposition characteristics of waves. By providing a light refraction layer 40 to cover the pattern layer 30, the light refraction layer 40 can selectively refract and reflect the wavelengths of light that penetrate the hardened layer 20, the shell substrate 10, and the pattern layer 30. In this way, when the user visually observes the surface of the shell 100, due to the provision of the light refraction layer 40, the user can visually observe the color presented by the wavelength of light selectively reflected by the light refraction layer 40. At the same time, due to the provision of the light refraction layer 40, the pattern and texture provided in the pattern layer 30 reflect light to the human eye with a stronger sense of gloss, and the color presented by the shell 100 is more vivid.

[0055] For example, the light refractive layer 40 may be formed using a refractive medium. The refractive medium may include, for example, a high refractive index material such as titanium dioxide, silicon nitride, niobium pentoxide, silicon dioxide, poly(pentabromophenyl methacrylate), poly(2-chlorostyrene), etc., or a low refractive index material such as poly(2,2,2-trifluoroethyl acrylate), poly(1,1,1,3,3,3-hexafluoroisopropyl methacrylate), etc. It is understood that the light refractive layer 40 may include multiple layers of refractive medium, in which each layer of the refractive medium may have a different refractive index. The refractive index of the refractive medium may be selected based on actual needs so that the formed light refractive layer 40 can present a desired glossiness and color.

[0056] The ink layer 50 covers and protects the light-refracting layer 40. The surface of the ink layer 50 serves as the side of the housing 100 that is placed in close contact with the electronic device. When the ink layer 50 is formed using an opaque ink of a specific color, it can block the transmission of light and reflect the color of the ink layer 50. This allows the human eye to perceive the light, including the glossy color of the light-refracting layer 40 and the color of the ink layer 50. The pattern and texture of the pattern layer 30 can also be clearly seen, enhancing the appearance and quality of the housing 100.

[0057] It can be understood that when the shell 100 includes a pattern layer 30, a light refraction layer 40 and an ink layer 50, the hardened layer 20 formed on the surface of the shell substrate 10 should be set to be transparent or translucent, that is, the hardened layer 20 should be light-transmitting to avoid the hardened layer 20 blocking the texture, color or gloss in the shell 100.

[0058] The shell 100 provided by the embodiment of the present disclosure has an opening 22 in the texture area 21 with a stable depth, so that the texture area 21 of the shell 100 has a higher dyne value, and the dyne values ​​at various positions in the texture area are evenly distributed with good stability. This can meet the requirement of stably bonding decorative parts in the texture area 21 of the shell 100 during the structural design of electronic devices, thereby reducing the risk of decorative parts falling off when users use electronic devices.

[0059] In an exemplary embodiment, the present disclosure further provides a method for manufacturing a housing, which can be used to manufacture the housing provided in the above embodiment of the present disclosure. Figure 5 As shown, Figure 5 FIG1 is a flow chart of a method for manufacturing a housing according to an exemplary embodiment. The method for manufacturing a housing includes the following steps:

[0060] Step S100: forming a hardened layer, where the hardened layer covers one side surface of the shell substrate;

[0061] Step S200 : forming a texture in a target area of ​​the hardened layer facing away from the shell substrate to obtain a textured area, wherein the dyne value of the textured area is greater than or equal to 36.

[0062] In step S100, refer to Figure 1 As shown, the housing substrate 10 serves as the main material for forming the housing 100 and can be formed of, for example, ceramic, glass, glass-ceramic, metals such as aluminum alloys or titanium alloys, composite materials, fiber-reinforced materials, etc. The housing substrate 10 can be a plate-like structure including a first surface 11 and a second surface 12 disposed opposite each other. The first surface 11 can be the side surface closest to the user.

[0063] To form the hardened layer 20, a layer of a relatively high-hardness material, such as, but not limited to, silicone coatings, fluorocarbons, acrylates, or epoxy resins, can be applied to the first surface 11 of the housing substrate 10. The material can be evenly applied to the first surface 11 via a flow coating or spray coating process and then hardened to form the hardened layer 20 covering the first surface 11. In this case, the hardened layer 20, as the surface in contact with the user, can enhance the hardness of the housing 100, providing a degree of wear and scratch resistance, and protecting the housing substrate 10. In some examples, the surface hardness of the housing 100 after the hardened layer 20 is formed can reach a Mohs hardness of 3-5. Furthermore, the hardened layer 20 can reduce the surface energy of the housing 100, making it less susceptible to fingerprints and dirt when touched by the user. In some examples, the material forming the hardened layer 20 can include PPG's ECP510 epoxy resin. For example, the thickness of the hardened layer 20 can be between 6μm and 12μm, achieving a good hardening protection effect while avoiding increasing the thickness of the housing 100.

[0064] In step S200, refer to Figure 1 As shown, the surface of the hardened layer 20 facing away from the housing substrate 10 is the surface of the housing 100 that directly contacts the user. The target area of ​​the hardened layer 20 can be the area where decorative parts are to be attached and require a higher dyne value. The target area can be any position or area on the surface of the hardened layer 20. In some examples, when the housing 100 needs to be equipped with a camera that protrudes from the surface of the hardened layer 20, the area surrounding the camera on the surface of the housing 100 can be defined as the target area. The target area can then be attached to the camera decorative part to protect and modify the camera.

[0065] A texture is formed in the target area. For example, the target area can be manipulated by CNC (Computer Numerical Control), laser engraving, etching, etc., so that an uneven texture appears in the target area, and the target area in turn forms a texture area 21. The shape and number of the texture formed in the texture area 21 are not limited. The shape of the texture can include, but is not limited to, dot texture, strip texture, wavy texture, V-shaped texture, etc. The texture is formed in the texture area 21 so that the dyne value in the texture area 21 is greater than or equal to 36. This dyne value is in a relatively high range, which can form a stable and firm bond between the decorative part and the texture area 21. When the decorative part is bonded to the texture area 21, the adhesive on the decorative part can more easily adhere to the surface of the texture area 21. At the same time, the adhesive on the decorative part can also be embedded in the texture of the texture area 21, so that the decorative part and the texture area 21 form a firm bond.

[0066] In some possible implementations, in step S200 of the manufacturing method provided in the above embodiment, forming a texture in a target area of ​​the hardened layer facing away from the shell substrate to obtain a textured area includes:

[0067] Under the first preset condition, the target area is laser engraved to form a textured area.

[0068] In this embodiment, reference Figure 1, the texture area 21 is formed by performing laser engraving on the target area. Laser engraving is a processing method that uses a high-energy-density laser to irradiate the surface of the material, causing the irradiated material to vaporize. Compared with other methods of forming textures, laser engraving does not directly contact the material, nor does it produce impact or cutting force on the material. In addition, the processing speed is relatively fast, and the adverse effects on other areas of the hardened layer 20 other than the target area are small or no adverse effects are produced. At the same time, since laser engraving can be processed using CNC, for example, the target area can be processed under controllable conditions of the first preset condition, so that the texture formed in the target area by laser engraving has a relatively uniform depth, and the obtained texture area 21 has a well-uniform roughness. In this way, the texture area 21 can have a high-dark-difference value with good stability to meet the stable bonding of the decorative part and the shell 100.

[0069] It is understandable that the first preset condition can be the laser irradiation parameter pre-set by the technician in the laser engraving machine. The first preset condition can be adjusted based on the depth of the texture to be formed. The first preset condition can include current intensity, focal length, and can also include parameters for laser marking once, such as laser power, marking frequency, air jump speed, marking speed and other parameters. The current intensity can affect the depth and width of the texture. When a larger current intensity is used, the texture formed in the texture area 21 has a larger depth and width. Since the hardened layer 20 to be laser engraved is a non-metallic material, a smaller current intensity can be used, which is sufficient to laser engrave the hardened layer 20. The focal length is the vertical distance between the laser emitting lens and the hardened layer 20. Since the hardened layer 20 to be laser engraved is a non-metallic material, a larger focal length can be used, or a certain distance away from the focus can be deviated to avoid excessive laser energy from forming too deep a texture in the target area.

[0070] In some possible implementations, reference Figure 1 In the thickness direction of the shell 100, the textured area 21 formed by the laser engraving process includes a plurality of openings 22. The openings 22 can be set to any shape, for example, a spindle, an inverted trapezoid, a rectangle, an inverted triangle, or an irregular shape. In the top view of the shell 100, the plurality of openings 22 are distributed in the textured area 21, that is, they appear as a texture in the textured area 21. The texture shape presented by the openings 22 can be arbitrary, for example, it can include dot-shaped grooves, strip-shaped textures, wavy textures, V-shaped textures, etc. It is understandable that the plurality of openings 22 can be distributed in any manner in the textured area 21, and can be distributed in an arranged or arrayed manner, or can be distributed in a randomly oriented manner.

[0071] In some examples, by controlling the first preset conditions during laser engraving, the depth of the openings 22 formed by laser engraving can be controlled to be between 10 μm and 30 μm. The depth of the openings 22 is the distance between the surface of the hardened layer 20 and the bottom of the openings 22. This reduces the loss of mechanical strength in the textured region 21. Furthermore, the difference in depth between the multiple openings 22 within the textured region 21 can be controlled to be within 20 μm. This means that the multiple openings 22 within the textured region 21 have good depth stability, resulting in good uniformity and stability of the dyne value within the textured region 21.

[0072] Furthermore, the dyne value of the texture area 21 including the opening 22 formed by laser engraving on multiple shells 100 is measured, and the dyne value of the texture area 21 including the opening 22 is measured. Figure 1 and Figure 2 As shown, the average dyne value of the texture area 21 on each shell 100 can be greater than or equal to 36, and the difference between the maximum and minimum values ​​is less than or equal to 2, indicating that the texture area 21 formed by the laser engraving process has a high level of dyne value with good uniformity.

[0073] In some examples, by controlling the first preset condition during laser engraving, the opening 22 formed by the laser engraving has a larger width. The width of the opening 22 can be controlled between 2 mm and 5 mm, so that the bottom surface of the opening 22 is fully exposed to the textured region 21, thereby making the textured region 21 have a higher dyne value. In addition, the larger width of the opening 22 allows the adhesive on the decorative part to fully contact the opening 22 in the textured region 21 when the decorative part is bonded to the textured region 21, thereby improving the bonding strength of the decorative part.

[0074] When forming multiple openings 22 in the target area to form the textured area 21, the first preset conditions may include laser power, marking frequency, idle speed, and marking speed. Laser power refers to the laser output energy. The greater the laser power, the deeper the texture formed in the textured area 21, and the greater the thermal deformation caused to the material. The laser power in this embodiment refers to a percentage of the laser engraving machine's rated maximum value. The laser power can be between 23% and 25% of the rated maximum value, which is sufficient to form openings 22 of the desired depth in the target area and reduce the degree of thermal deformation caused by the laser engraving process on the shell substrate 10 having the hardened layer 20.

[0075] The marking frequency, also known as the Q frequency, refers to the number of laser beams emitted within one second. A higher marking frequency results in more laser beams emitted, a shorter laser energy-gathering time, and weaker laser energy. This results in denser openings 22 formed within the textured region 21 and higher geometric precision of the openings 22. This embodiment utilizes a marking frequency between 25kHz and 30kHz, resulting in smaller openings 22 formed within the textured region 21, a higher density, and improved dyne uniformity within the textured region 21.

[0076] Marking speed refers to the speed of the laser's scanning galvanometer. The faster the marking speed, the fewer times the laser strikes the same area, and the smaller the depth of the opening 22 formed by the laser strikes. A slower marking speed is more conducive to increasing the depth of the opening 22. However, if the marking speed is too slow, the material produced by the laser will accumulate on the surface of the material, affecting the depth of the opening 22. In this embodiment, a marking speed between 1400 mm / s and 1800 mm / s is used to ensure the efficiency of forming the opening 22 in the textured area 21 and to ensure that the opening 22 has an appropriate depth.

[0077] The jump speed refers to the operating speed of the galvanometer mirror in the laser machine when the laser machine is not emitting light. The higher the jump speed, the shorter the overall laser engraving process takes, but the geometric precision of the resulting opening 22 decreases. In this embodiment, a jump speed between 1900 mm / s and 2100 mm / s is used to ensure that the processing time for forming the opening 22 is low while maintaining the structural precision of the opening 22.

[0078] In some examples, the laser engraving light source used in the embodiments of the present disclosure utilizes CO2 gas molecules to discharge laser light, with a wavelength of 10.64 μm. Compared to ultraviolet lasers, which can easily cause the hardened layer 20 to fall off, CO2 lasers are faster and more stable in laser engraving the hardened layer 20, with less impact on the hardened layer 20 itself.

[0079] It is understood that the plurality of laser-engraved openings 22 can be evenly arranged in the textured region 21, so that the difference in dyne values ​​between points in the textured region 21 is small, that is, the dyne values ​​have good uniformity. For example, the plurality of openings 22 can be arranged in an array in the textured region 21, but this is not limited thereto.

[0080] In some possible implementations, reference Figure 3As shown, when the shell substrate 10 is formed of a composite material, the composite material forming the shell substrate 10 includes a first substrate 13 and a second substrate 14 that are stacked, and the forming material of the first substrate 13 includes one or more of PMMA, ABS, PET, and PVC; the forming material of the second substrate includes one or more of PC, ABS, PET, and PVC. In some examples, the material of the first substrate 13 includes PMMA, and the material of the second substrate 14 includes PC. Since the first substrate 13 formed of PMMA has good hardness and wear resistance, the surface of the first substrate 13 can serve as the first surface 11 that contacts the user. The second substrate 14 formed of PC has good toughness, and the surface of the second substrate 14 can serve as the inner side of the formed shell. The first substrate 13 and the second substrate 14 can be bonded together through a hot pressing process.

[0081] In an exemplary embodiment, a method for manufacturing a housing includes the following steps:

[0082] Step S101: forming a hardened layer, where the hardened layer covers one side surface of the shell substrate;

[0083] Step S102, forming a texture in a target area of ​​the hardened layer on a surface facing away from the shell substrate to obtain a textured area, wherein the dyne value of the textured area is greater than or equal to 36;

[0084] Step S103: forming a pattern layer, where the pattern layer covers the surface of the housing substrate facing away from the hardened layer;

[0085] Step S104: forming a light refraction layer, wherein the light refraction layer covers the pattern layer;

[0086] Step S105 : forming an ink layer, where the ink layer covers the light refraction layer.

[0087] In this embodiment, the implementation of steps S101 to S102 is the same as or similar to the implementation of steps S100 to S200 in the above embodiments of the present disclosure, and will not be described in detail here.

[0088] In step S103, refer to Figure 4 As shown, since the surface of the shell substrate 10 facing away from the hardened layer 20 (i.e., the second surface 12) serves as the inner side of the shell 100, a pattern layer 30 is formed on the surface of the second surface 12, so that when the shell substrate 10 is a transparent material, the user can visually see the pattern or texture presented by the pattern layer 30 through the shell substrate 10, while avoiding direct contact between the user and the pattern layer 30, thereby avoiding wear and deformation of the texture of the pattern layer 30.

[0089] The pattern layer 30 may include a pattern and / or texture pre-designed by a technician. The pattern layer 30 may be formed by covering the second surface 12 of the shell substrate 10 with ink by an offset printing process, a silk screen printing process, a pad printing process, or a transfer printing process. Alternatively, a layer of transparent UV (Ultra violet) glue may be coated on the second surface 12 and then the UV glue may be embossed to form an embossed texture on the second surface 12, so that the UV glue with the embossed texture forms the pattern layer 30.

[0090] In some examples, a method of forming a patterned layer includes:

[0091] Step S201: coating a transparent resin on the surface of the housing substrate away from the hardening layer;

[0092] Step S202 : using an imprinting mold to extrude the transparent resin, and curing the transparent resin to form a pattern layer.

[0093] refer to Figure 4 The transparent resin can be a transparent, photocurable resin or a thermosetting resin. The main resin of the transparent resin may include, but is not limited to, epoxy resin, vinyl ether, acrylate, etc. The transparent resin is in a liquid or gel state before curing. After being evenly applied to the surface of the housing substrate 10 facing away from the hardened layer 20, the transparent resin is extruded using an imprinting mold, so that the pattern or texture corresponding to the pattern layer 30 set on the imprinting mold is formed in the transparent resin.

[0094] Since the transparent resin is in a liquid or gel state, when the imprinting mold is used to squeeze the transparent resin, the transparent resin is cured, so that the liquid or gel transparent resin is converted into a solid state. The curing process can be performed based on the type of transparent resin. For example, when the transparent resin is a thermosetting resin, the shell substrate 10 coated with the transparent resin and squeezed by the imprinting mold is placed in a heating device and heated at a suitable temperature for a certain period of time to cure the transparent resin. The transparent resin is firmly bonded to the second surface 12 of the shell substrate 10, and a pattern layer 30 with a texture or pattern is formed.

[0095] For another example, when the transparent resin is a photo-curable resin, since the transparent resin needs to be exposed to a light source of a specific wavelength to be cured, the imprint mold should be made of a light-transmitting material so that during the curing process, the curing light source penetrates the light-transmitting imprint mold, causing the photoinitiator in the transparent resin to undergo a photochemical reaction, thereby firmly bonding the transparent resin to the second surface 12 of the shell substrate 10 and forming a pattern layer 30 with a texture or pattern. In some examples, when the transparent resin is a UV resin, a UV light source is used to irradiate the transparent resin to cure the UV resin. The energy of the UV light source can be 1500mj / cm2 -1900mj / cm 2 It is understandable that after the transparent resin is cured and the imprint mold is removed, the pattern layer 30 formed by the transparent resin can still retain a good texture or pattern shape.

[0096] In step S104, the light refraction layer 40 can be formed using a refractive medium. The refractive medium can include, for example, a high refractive index material such as titanium dioxide, silicon nitride, niobium pentoxide, silicon dioxide, poly(pentabromophenyl methacrylate), poly(2-chlorostyrene), etc., or a low refractive index material such as poly(2,2,2-trifluoroethyl acrylate), poly(1,1,1,3,3,3-hexafluoroisopropyl methacrylate), etc.

[0097] In some examples, at least two layers of refractive medium can be sequentially formed on the surface of the pattern layer 30. The refractive medium can be formed on the surface of the pattern layer 30 by coating or by PVD (Physical Vapor Deposition). In some examples, the refractive medium is formed on the surface of the pattern layer 30 by PVD so that the formed light refraction layer 40 has a uniform distribution and good density. It is understood that the refractive index of each layer of the multiple layers of refractive medium forming the light refraction layer 40 can be different. The refractive index of the refractive medium can be selected based on actual needs so that the formed light refraction layer 40 can exhibit the desired gloss and color. In some examples, the light refraction layer 40 can include nine layers of refractive medium, and the refractive medium includes niobium pentoxide and silicon dioxide.

[0098] In step S105, after forming the light refraction layer 40, an ink layer 50 is formed on the surface of the light refraction layer 40. The ink layer 50 covers the light refraction layer 40 and protects the light refraction layer 404. The surface of the ink layer 50 can serve as the inner side surface of the housing 100, where it is tightly attached to the electronic device. When the ink layer 50 is formed using an opaque ink of a certain color, the ink layer 50 can also block the transmission of light and reflect the color of the ink layer 50. This allows the light perceived by the human eye to include the gloss color of the light refraction layer 40 and the color of the ink layer 50. The pattern and texture of the pattern layer 30 can also be clearly seen, enhancing the appearance and texture of the housing 100.

[0099] It is understood that the ink layer 50 may include multiple layers of ink so that the ink layer 50 can block light and ensure the vividness of the color provided by the ink layer 50. In the process of forming the ink layer 50, after each layer of ink is applied, the layer of ink needs to be dried to avoid affecting the uniformity of the ink layer 50. It is understood that in order to improve processing efficiency and save time and cost, after each layer of ink is applied and printed, the layer of ink can be surface-dried before the next layer of ink is applied and printed. After the last layer of ink is applied and printed, all the inks are completely dried. For example, the thickness of the ink layer 50 can be between 24μm and 32μm, and the thickness of each layer of ink in the ink layer 50 can be between 6μm and 8μm.

[0100] It can be understood that when the shell base 100 includes a pattern layer 30, a light refraction layer 40 and an ink layer 50, the hardening layer 20 stacked on the first surface 11 of the shell substrate 10 should be set to be transparent or translucent to avoid the hardening layer 20 blocking the texture, color or gloss provided in the shell 100.

[0101] In some possible implementations, when the formed housing 100 needs to be set to a 2.5D or 3D curved surface structure, refer to Figure 1 and Figure 4 As shown, before forming the hardened layer 20, a pattern layer 30, a light refraction layer 40, and an ink layer 50 are first formed on the inner surface (second surface 12) of the housing substrate 10. The housing substrate 10 formed with the pattern layer 30, the light refraction layer 40, and the ink layer 50 is then subjected to a hot pressing process. The hot pressing process heats and pressurizes the housing substrate 10 so that the edges of the formed housing 100 bend or fold toward the second surface 12 of the housing substrate 10, resulting in a curved structure of the housing 100. If the housing 100 is hot pressed after forming the hardened layer 20, it is likely to cause thermal deformation of the hardened layer 20, affecting the protective effect of the hardened layer 20.

[0102] In some examples, a hot pressing mold is used for hot pressing treatment, and the upper mold and the lower mold of the hot pressing mold are preheated to 130°C-140°C. The shell substrate 10 formed with the pattern layer 30, the light refraction layer 40 and the ink layer 50 is placed between the upper mold and the lower mold of the hot pressing mold. After the upper mold and the lower mold are closed, vacuum is applied to the upper mold and the lower mold and maintained for a certain period of time, and a shell 100 with a curved structure can be obtained.

[0103] In an exemplary embodiment, the present disclosure further provides an electronic device, which may include, for example, a mobile phone, a tablet computer, a watch, or the like. The electronic device includes the housing provided in the above-described embodiment, which may serve as the back cover of the electronic device and be in close proximity to the battery of the electronic device. The electronic device may further include a camera assembly and a camera decorative piece. When the camera assembly is assembled with the main body of the electronic device and the housing, the housing is provided with a through hole for mounting the camera assembly. The camera assembly is mounted and connected to the main body of the electronic device through the through hole and protrudes from the outer surface of the housing. The camera decorative piece decorates and protects the camera assembly protruding from the outer surface of the housing. Therefore, the camera decorative piece is provided on the periphery of the camera assembly and is bonded to the surface of the housing. Therefore, the area bonded to the camera decorative piece is the target area that has been laser engraved. Because the target area of ​​the hardened layer on the surface of the housing has a laser engraving structure with a preset laser engraving depth, the target area has a high dyne value, and the dyne value at each position in the target area is evenly distributed, so that the camera decorative piece can be stably bonded to the housing and is not easily detached. The camera decorative piece can provide good protection for the camera assembly, thereby improving user satisfaction.

[0104] Other embodiments of the present invention will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the invention being indicated by the following claims.

[0105] It should be understood that the present invention is not limited to the exact construction described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A housing, characterized in that: The shell includes a shell substrate and a hardened layer that are stacked. A textured area is provided on a surface of the hardened layer that is away from the shell substrate. The dyne value of the textured area is greater than or equal to 36.

2. The housing according to claim 1, wherein: The texture region includes a plurality of openings, wherein the depth of the openings is 10 μm-30 μm, and / or the width of the openings is 2 mm-5 mm.

3. The housing according to claim 2, wherein: The thickness of the hardened layer is 6 μm-12 μm, the bottom surface of the opening is arranged inside the hardened layer, and / or the bottom surface of the opening is arranged inside the shell substrate.

4. The housing according to claim 2, wherein: The ratio of the depth of the opening to the thickness of the shell is 0.010-0.

078.

5. The housing according to any one of claims 1 to 4, characterized in that: The material of the shell substrate includes one or more of glass, ceramic, microcrystalline glass, and composite materials.

6. The housing according to claim 5, wherein: The composite material includes a first substrate and a second substrate that are stacked. The material of the first substrate includes PMMA, and the material of the second substrate includes PC. The first substrate is tightly attached to the hardened layer.

7. The housing according to claim 5, wherein: The shell further comprises a pattern layer, a light refraction layer and an ink layer which are stacked in sequence. The pattern layer is arranged on a surface of the shell substrate away from the hardening layer.

8. A method for manufacturing a housing, characterized in that: The method for manufacturing the housing includes: forming a hardened layer, wherein the hardened layer covers one side surface of the shell substrate; A texture is formed in a target area of ​​the hardened layer on a surface facing away from the shell substrate to obtain a textured area, wherein a dyne value of the textured area is greater than or equal to 36.

9. The method for manufacturing a housing according to claim 8, wherein: Forming a texture in a target area of ​​the hardened layer facing away from the shell substrate to obtain a textured area includes: Under a first preset condition, the target area is laser engraved to form the texture area.

10. The method for manufacturing a housing according to claim 9, wherein: The first preset condition includes: marking speed: 1400mm / s-1800mm / s; and / or, Jump speed: 1900mm / s-2100mm / s; and / or, Marking frequency: 25kHz-30kHz; and / or, Laser power: 23%-25%.

11. The method for manufacturing a housing according to claim 8, wherein: The method for manufacturing the housing further includes: forming a pattern layer, wherein the pattern layer covers a surface of the housing substrate facing away from the hardened layer; forming a light refraction layer, wherein the light refraction layer covers the pattern layer; An ink layer is formed, and the ink layer covers the light refraction layer.

12. An electronic device, characterized in that: The electronic device comprises the housing according to any one of claims 1 to 7.

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