Shell manufacturing method, shell and electronic equipment

Abstract

The invention provides a shell manufacturing method, a shell and electronic equipment, and the method comprises the steps: providing a shell substrate which comprises a first surface, and the dyne value of a target position of the first surface is higher than the dyne values of other positions of the first surface; forming an appearance layer covering the first surface to obtain an initial shell, and removing the appearance layer corresponding to the target position on the initial shell to expose the target position of the first surface to obtain the shell. According to the invention, under the condition that the strength performance of the shell is not influenced, the shell with a high scale value can be obtained, and the use experience of a user is improved.

Description

Technical Field

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

[0002] When users use electronic devices such as mobile phones and tablets, or when designing the appearance of electronic devices, it is sometimes necessary to paste decorative parts on the housing of the electronic device to meet the appearance of the electronic device. The housing of the electronic device usually includes a housing substrate and an appearance surface covering the housing substrate. The appearance surface can play a role of wear resistance and high gloss, but the dyne value of the appearance surface is low, and when decorative parts need to be pasted on the housing, good adhesion cannot be achieved.

[0003] At present, methods for improving the dyne value of the shell appearance surface generally include using CNC (Computer Numerical Control) to mill out textures at local positions on the shell appearance surface, or, partially non-spray coating the shell substrate, using a spray coating jig to cover the expected position to form an appearance layer at other positions other than the expected position, so that the appearance surface can include the shell substrate and the appearance layer, thereby improving the dyne value of the local appearance surface of the shell.

[0004] However, due to the small thickness of the shell, although the dyne value is increased when CNC is used to form the texture, it is easy to cause a large loss of thickness and strength of the shell. The use of partial non-spray coating to form the appearance layer is limited by the spray coating method, and it is easy for the non-spray coating area to be larger than the expected area, making it impossible to maintain the dyne value of the shell appearance at a high level. Summary of the invention

[0005] In order to overcome the problems existing in the related art, the present disclosure provides a method for manufacturing a housing, a housing, and an electronic device. According to a first aspect of the present disclosure, a method for manufacturing a housing is provided, and the method for manufacturing a housing includes:

[0006] Providing a shell substrate, the shell substrate comprising a first surface, the dyne value of a target position of the first surface being higher than the dyne value of other positions of the first surface;

[0007] forming an appearance layer covering the first surface to obtain an initial shell;

[0008] The exterior layer corresponding to the target position on the initial shell is removed to expose the target position on the first surface, thereby obtaining the shell.

[0009] In some embodiments of the present disclosure, removing the appearance layer corresponding to the target position on the initial shell includes:

[0010] Under a first preset condition, a first laser is used to irradiate the appearance layer corresponding to the target position to remove the appearance layer corresponding to the target position.

[0011] In some embodiments of the present disclosure, using a first laser to irradiate the appearance layer corresponding to the target position includes:

[0012] scanning the appearance layer to capture the target position;

[0013] The appearance layer corresponding to the target position is irradiated with a preset light.

[0014] In some embodiments of the present disclosure, scanning the appearance layer to capture the target position includes:

[0015] Scanning the appearance layer with an image sensor to capture the target position;

[0016] The step of irradiating the appearance layer corresponding to the target position with a preset light comprises:

[0017] The appearance layer corresponding to the target position is irradiated with ultraviolet laser.

[0018] In some embodiments of the present disclosure, the first preset condition includes: the laser power of the first laser is 80W-120W, and the processing rate of the first laser is 30mm / min-60mm / min.

[0019] In some embodiments of the present disclosure, the method for manufacturing the housing further includes:

[0020] The target position on the first surface of the shell substrate is irradiated with a second laser, so that the dyne value of the target position on the first surface is higher than the dyne value of other positions on the first surface.

[0021] In some embodiments of the present disclosure, the laser power of the second laser is 150W-200W, and the processing rate of the second laser is 20mm / min-40mm / min.

[0022] In some embodiments of the present disclosure, before irradiating the target position of the first surface with a second laser, the method for manufacturing the housing further includes:

[0023] A protective film is attached to the first surface, wherein the protective film exposes the target position;

[0024] Before forming the exterior layer, the protective film is removed.

[0025] In some embodiments of the present disclosure, the shell substrate includes a substrate layer and a decoration layer which are stacked, and the first surface is a surface of the decoration layer on a side away from the substrate layer.

[0026] In some embodiments of the present disclosure, the substrate layer is polycarbonate, and the decorative layer is polymethyl methacrylate.

[0027] In some embodiments of the present disclosure, the housing substrate further includes a pattern layer, and the pattern layer covers the substrate layer;

[0028] an electroplating layer, wherein the electroplating layer covers the pattern layer;

[0029] An ink layer covers the electroplating layer.

[0030] According to a second aspect of the present disclosure, a shell is provided, wherein the shell is manufactured by using the shell manufacturing method provided by the first aspect of the present disclosure.

[0031] According to a third aspect of the present disclosure, an electronic device is provided, and the electronic device includes the housing provided by the second aspect of the present disclosure.

[0032] The technical solution provided by the embodiment of the present disclosure may include the following beneficial effects: firstly, a target position of the first surface of the shell substrate is processed so that the dyne value of the target position is higher than that of other positions. After the appearance layer is formed, the appearance layer corresponding to the target position is removed so that the target position of the first surface with a higher dyne value is exposed, so as to obtain a shell with higher strength performance and higher dyne value, thereby improving the user experience.

[0033] 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 present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] 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.

[0035] Figure 1 The figure is a flow chart of a method for manufacturing a shell according to an exemplary embodiment.

[0036] Figure 2 is a cross-sectional view of a housing substrate according to an exemplary embodiment.

[0037] Figure 3 is a cross-sectional view of a housing substrate according to another exemplary embodiment.

[0038] Figure 4 is a cross-sectional view of an initial housing according to an exemplary embodiment.

[0039] Figure 5 is a cross-sectional view of a housing according to an exemplary embodiment.

[0040] Figure 6 is a schematic diagram showing laser irradiation of a housing according to an exemplary embodiment. DETAILED DESCRIPTION

[0041] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0042] When users use electronic devices such as mobile phones and tablets, or when designing the appearance of electronic devices, it is sometimes necessary to paste decorative parts on the housing of the electronic device to meet the appearance of the electronic device. The housing of the electronic device usually includes a housing substrate and an appearance surface covering the housing substrate. The appearance surface can play a role of wear resistance and high gloss, but the dyne value of the appearance surface is low, and when decorative parts need to be pasted on the housing, good adhesion cannot be achieved.

[0043] At present, methods for improving the dyne value of the shell appearance surface generally include using CNC (Computer Numerical Control) to mill out textures at local positions on the shell appearance surface, or, partially non-spray coating the shell substrate, using a spray coating jig to cover the expected position to form an appearance layer at other positions other than the expected position, so that the local appearance surface can include the shell substrate and the appearance layer, thereby improving the dyne value of the shell appearance surface.

[0044] However, due to the small thickness of the shell, when CNC is used to form the texture, although the dyne value is increased, it is easy to cause a large loss of thickness and strength of the shell. During the spray coating, the spray coating material is easy to cover the entire shell substrate, resulting in a decrease in the surface dyne value after spray coating. The use of partial non-spray coating to form the appearance layer is limited by the spray coating method of using a spray coating fixture for shielding, which easily results in the non-spray coating area being larger than the expected area, and the dyne value of the shell appearance surface cannot be maintained at a high level.

[0045] In view of this, the present disclosure provides a method for manufacturing a shell, comprising: providing a shell substrate, the shell substrate comprising a first surface, the dyne value of a target position of the first surface being higher than the dyne values ​​of other positions of the first surface. An appearance layer covering the first surface is formed to obtain an initial shell, and the appearance layer corresponding to the target position on the initial shell is removed to expose the target position of the first surface to obtain a shell. The present disclosure first processes the target position of the first surface of the shell substrate so that the dyne value of the target position is higher than that of other positions. After the appearance layer is formed, the appearance layer corresponding to the target position is removed to expose the target position of the first surface with a higher dyne value, so as to obtain a shell with higher strength performance and higher dyne value, thereby improving the user experience.

[0046] An exemplary embodiment of the present disclosure provides a method for manufacturing a housing, referring to Figure 1 As shown, Figure 1 FIG. 1 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:

[0047] Step S101, providing a shell substrate, the shell substrate comprising a first surface, the dyne value of a target position of the first surface being higher than the dyne value of other positions of the first surface;

[0048] Step S102, forming an appearance layer covering the first surface to obtain an initial shell;

[0049] Step S103 : removing the exterior layer corresponding to the target position on the initial shell to expose the target position of the first surface, thereby obtaining the shell.

[0050] Dyne is a unit used to express force. The dyne value can also be called surface tension or surface tension coefficient. It refers to the force of mutual attraction between two adjacent parts of the liquid surface 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 material surface to be colored or adhered.

[0051] In step S101, the shell substrate can be formed by the main body forming material of the shell, for example, it can be formed by one of ceramics, glass, metals such as aluminum alloy or titanium alloy, and plastic. The shell substrate can be a plate-like structure, which has a first surface and a second surface relative to each other. After the shell substrate is made into a shell, the second surface is close to the battery of the electronic device, and the first surface is attached to the appearance layer formed subsequently to serve as a side surface that the user contacts. The target position of the first surface can be any local position of the first surface, and the target position can also include multiple local positions, and the multiple local positions can be evenly or unevenly dispersed on the first surface. The local position can be any shape such as circular, rectangular, triangular, etc., and the present disclosure does not limit this.

[0052] The dyne value of the target position of the first surface of the shell substrate provided by the present invention is higher than the dyne value of other positions. For example, the target position of the first surface can be treated with a surfactant, or the target position can be modified by plasma treatment or laser treatment to introduce active functional groups at the target position of the first surface, or etching can be performed at the target position to make the dyne value of the target position higher than the dyne value of other positions, thereby enhancing the adhesion of glue, ink, coating and other materials to the first surface.

[0053] In some possible embodiments, the shell substrate is a composite sheet, that is, two or more plastic materials selected from PC (Polycarbonate), PMMA (poly (methylmethacrylate), PET (Poly (ethyleneterephthalate), ABS (Acrylonitrile Butadiene Styrene), and PVC (Polyvinyl chloride) are stacked and arranged. For example, refer to Figure 2 As shown, the housing substrate 10 includes a decorative layer 11 and a substrate layer 12 which are stacked. The decorative layer 11 and the substrate layer 12 can be formed of one or more of the aforementioned plastic materials, respectively. The first surface 13 is the surface of the decorative layer 11 which is away from the substrate layer 12. That is, the decorative layer 11 is attached to the appearance layer formed later to serve as the surface on the side that the user contacts, while the substrate layer 12 is used to be close to the battery side of the electronic device. Exemplarily, the thickness of the housing substrate 10 formed by the decorative layer 11 and the substrate layer 12 can be 0.2 mm to 1.0 mm.

[0054] For example, the decorative layer 11 can be formed of polymethyl methacrylate, and the substrate layer 12 can be formed of polycarbonate. The substrate layer 12 formed of polycarbonate has good transparency, heat resistance and impact resistance, but low wear resistance and hardness, while the decorative layer 11 formed of polymethyl methacrylate has good light transmittance, weather resistance and processability. The decorative layer 11 and the substrate layer 12 are used to form the shell substrate 10, so that the shell substrate 10 has good mechanical properties and durability.

[0055] In one example, reference Figure 3As shown, in addition to the decorative layer 11 and the substrate layer 12 which are stacked, the shell substrate 10 may also include a pattern layer 14, an electroplating layer 15 and an ink layer 16, wherein the pattern layer 14 covers the substrate layer 12, the electroplating layer 15 covers the pattern layer 14, and the ink layer 16 covers the electroplating layer 15. The surface of the decorative layer 11 on the side away from the substrate layer 12 is used as the first surface, and the dyne value of the target position of the first surface is higher than the dyne value of other positions of the first surface. Exemplarily, the target position of the first surface may be any local position of the first surface, and the target position may also include multiple local positions, and the multiple local positions may be evenly or unevenly dispersed on the first surface. The dyne value of the target position of the first surface of the shell substrate is higher than the dyne value of other positions, so as to enhance the adhesion of glue, ink, coating and other materials to the first surface.

[0056] The pattern layer 14 may include a pattern and / or texture pre-designed by a technician. Since the decorative layer 11 and the substrate layer 12 are both colorless and transparent plastics, the pattern layer 14 covers the substrate layer, so that the finally formed housing can present a certain pattern and texture when light is transmitted through the decorative layer 11 and the substrate layer 12, so that the housing has a certain appearance effect. Exemplarily, the pattern layer 14 may be formed by an offset printing process and / or a transfer printing process, and the thickness of the pattern layer 14 may be 0.005 mm-0.03 mm.

[0057] The electroplating layer 15 covers the pattern layer 14, and the electroplating layer 15 is used to provide color for the shell substrate 10, so that the shell substrate 10 can present a certain color effect when light is transmitted from the decorative layer 11 and the substrate layer 12. The electroplating layer 15 can be formed by resistive evaporation plating, magnetron sputtering plating or electron gun evaporation plating. In the process of forming the electroplating layer 15, by using different electroplating raw materials, the electroplating layer 15 can present black titanium, titanium gold, big gold, champagne gold, rose gold, yellow bronze, wine red, brown, coffee color, sapphire blue, emerald green and other colors. Exemplarily, the thickness of the electroplating layer 15 can be 50nm-400nm.

[0058] The ink layer 16 covers the electroplating layer 15. The ink layer 16 is used to protect the electroplating layer 15 and the pattern layer 14. The ink layer 16 is an opaque layer so that the final shell can present a stable and good texture and color. The ink layer 16 can be formed by a spraying process or a printing process. Since the shell substrate 10 needs to be hot-pressed by a high-pressure molding machine in the subsequent process to obtain a 3D-shaped shell, in the high-pressure molding process, the ink layer 16 in the shell substrate 10 has high requirements for high temperature resistance, high pressure resistance, and elongation. Therefore, when the thickness of the electroplating layer 15 is less than 200nm, the ink layer 16 can be formed by a printing process. When the thickness of the electroplating layer 15 is 200nm-400nm, the ink layer 16 can be formed by a spraying process to improve the yield of the final shell.

[0059] It should be noted that, since the first surface of the housing substrate is the surface of the decorative layer 11 on the side away from the substrate layer 12, the housing substrate in this embodiment may be a housing substrate 10 formed by only the decorative layer 11 and the substrate layer 12, or a housing substrate 10 including the decorative layer 11, the substrate layer 12, and the pattern layer 14 covering the substrate layer 12, or a housing substrate 10 including the decorative layer 11, the substrate layer 12, the pattern layer 14, and the electroplating layer 15 covering the pattern layer 14, or a housing substrate 10 including the decorative layer 11, the substrate layer 12, the pattern layer 14, the electroplating layer 15, and the ink layer 16. That is, this embodiment does not limit the structure of the housing substrate 10 provided, as long as the first surface 13 is the surface of the decorative layer 11 on the side away from the substrate layer 12.

[0060] In step S102, combining Figure 3 and Figure 4 As shown, when forming the appearance layer 21, a raw material selected from UV liquid glue, hot melt glue, pressure sensitive glue, epoxy resin adhesive or anaerobic glue can be used, and the raw material is covered on the first surface 13 by a coating process or a spraying process, and the raw material is hardened by a hardening process to form the appearance layer 21 covering the first surface 13. The shell substrate 10 and the appearance layer 21 covering the first surface 13 constitute the initial shell 20, and the appearance layer 21 is used to protect the shell substrate 10 and play a role in preventing wear and scratches. Exemplarily, the thickness of the appearance layer 21 can be 0.003mm-0.02mm.

[0061] In step S103, refer to Figure 3 and Figure 5As shown, since the dyne value of the target position is higher than the dyne value of other positions on the first surface, after the appearance layer 21 is formed, the appearance layer 21 corresponding to the target position is removed to form an opening 30 at the target position, and the bottom surface of the opening 30 exposes the target position of the first surface 13, so that the target position with a higher dyne value can be exposed from the surface of the shell 100, so as to achieve the appearance surface of the formed shell 100 having a higher dyne value. It should be noted that since the appearance layer 21 has a relatively low thickness, although the appearance layer 21 corresponding to the target position is removed to form the opening 30, the user will hardly perceive the existence of the opening 30 in terms of vision and touch during the use of the shell 100, which will not affect the user's experience.

[0062] Exemplarily, the appearance layer 21 corresponding to the target position can be processed by laser drilling or etching, and the etching can be dry etching or wet etching. Dry etching can include physical etching, chemical etching and physical and chemical etching. Among them, physical etching is also called sputtering etching. Sputtering etching relies on energy bombardment to knock out atoms to act on the appearance layer 21 corresponding to the target position to form an opening 30. Chemical etching uses chemically active atomic groups in plasma gas to react chemically with the etched material to achieve the purpose of etching. The etching gas used in chemical etching includes, for example, carbon tetrafluoride (CF4), trifluoromethane (CHF3), chlorine (Cl2), sulfur hexafluoride (SF6), octafluorocyclobutane (C4F8) or hexafluorobutadiene (C4F6), but is not limited thereto. The physical and chemical etching may include reactive ion etching (RIE) and high density plasma etching (HDP), etc., which perform physical bombardment and chemical reaction on the appearance layer 21 through active ions, and have the advantages of good anisotropy and selectivity.

[0063] In an exemplary embodiment, a method for manufacturing a housing includes the following steps:

[0064] Step S201, providing a shell substrate, the shell substrate comprising a first surface, the dyne value of a target position of the first surface being higher than the dyne value of other positions of the first surface;

[0065] Step S202, forming an appearance layer covering the first surface to obtain an initial shell;

[0066] Step S203: Under a first preset condition, use a first laser to irradiate the appearance layer corresponding to the target position to remove the appearance layer corresponding to the target position to expose the target position of the first surface, thereby obtaining a shell.

[0067] In this embodiment, steps S201 to S202 are the same as or similar to steps S101 to S102 shown in the above embodiment, and are not described in detail herein.

[0068] In step S203, refer to Figure 5 As shown, the first laser is used to irradiate the appearance layer 21 corresponding to the target position to remove the appearance layer 21 corresponding to the target position, forming an opening 30, and the opening 30 exposes the target position of the first surface to obtain the housing 100. The first laser can be a laser whose laser spectrum is in the infrared light region, the visible light region and the ultraviolet light region, and the wavelength of the first laser is not limited here. In the process of using the first laser irradiation, the light source is excited by electric energy to generate a high-energy laser beam, and the high-energy laser beam is transmitted through the optical element to irradiate the surface of the appearance layer 21. The material forming the appearance layer 21 absorbs the photons in the high-energy laser beam and converts the light energy into heat energy, so that the appearance layer 21 at the target position is instantly melted or vaporized to form the opening 30.

[0069] The first preset condition may be an operating parameter of the laser irradiation machine pre-set by a technician, for example, it may include the laser power of the first laser and the processing rate of the first laser. Exemplarily, the laser power of the first laser may be any value between 80W and 120W. By controlling the laser power within this range, while removing the appearance layer 21 at the target position, the irradiation of the first laser may be prevented from having an adverse effect on the strength of the housing 100. The processing rate of the first laser may be any value between 30mm / min and 60mm / min. In some examples, the processing rate may be adjusted based on the laser power. The higher the laser power, the faster the processing rate.

[0070] For example, in combination Figure 4 and Figure 6 As shown, before the first laser is used to irradiate the appearance layer 21 corresponding to the target position, the initial shell 20 can be placed in a cooling jig 40 on the laser irradiation machine 80. The cooling jig 40 can be, for example, a jig with an air flow passage or a water mist passage arranged inside. During the laser irradiation process, the cooling jig 40 can cool the initial shell 20 to achieve the effect of eliminating the residual heat of the first laser processing and reducing the intensity influence of the first laser on the initial shell 20.

[0071] In an exemplary embodiment, a method for manufacturing a housing includes the following steps:

[0072] Step S301, providing a shell substrate, the shell substrate comprising a first surface, the dyne value of a target position of the first surface being higher than the dyne value of other positions of the first surface;

[0073] Step S302, forming an appearance layer covering the first surface to obtain an initial shell;

[0074] Step S303, under a first preset condition, scanning the appearance layer to capture the target position; using a preset light to irradiate the appearance layer corresponding to the target position to remove the appearance layer corresponding to the target position to expose the target position on the first surface, thereby obtaining a shell.

[0075] In this embodiment, steps S301 to S302 are the same as or similar to steps S101 to S102 shown in the above embodiment, and are not described in detail here.

[0076] In step S303, the first preset condition may be an operating parameter of a laser irradiation machine pre-set by a technician, for example, it may include the laser power of the preset light and the processing rate of the ultraviolet laser. Exemplarily, the laser power of the preset light may be any value between 80W and 120W. By controlling the laser power within this range, while removing the appearance layer 21 at the target position, it is possible to avoid the irradiation of the preset light from having an adverse effect on the strength of the shell 100. The processing rate of the preset light may be any value between 30mm / min and 60mm / min. The preset light may be a laser whose laser spectrum is in the infrared light region, the visible light region, and the ultraviolet light region. The present disclosure does not limit the category of the preset light.

[0077] Combination Figure 4 and Figure 6 As shown, since the appearance layer 21 covers the first surface, when determining the target position, a device that can penetrate the appearance layer 21 can be used to scan the appearance layer 21 to capture the target position. For example, an image sensor 70 such as a Charge Coupled Device (CCD), a CMOS sensor or other image sensors that can penetrate the appearance layer 21 can be used to scan the appearance layer 21 of the initial shell 20 to capture the target position with a higher dyne value. After determining the target position, the mechanical arm 60 drives the laser emitter 50 connected thereto to move so that the position of the laser emitter 50 is aligned with the target position, so that the laser emitter 50 emits a preset light to remove the appearance layer 21 corresponding to the target position.

[0078] Exemplarily, the preset light may be an ultraviolet laser, which is a high-energy cold laser beam. When the ultraviolet laser irradiates the appearance layer 21 corresponding to the target position, the high-energy cold laser beam is transmitted through the optical element to irradiate the surface of the appearance layer 21. The material forming the appearance layer 21 absorbs the photons in the high-energy cold laser beam, converts the light energy into heat energy, and causes the appearance layer 21 at the target position to melt or vaporize instantly to form an opening 30. The opening 30 exposes the target position of the first surface to obtain the shell 100. Since the ultraviolet laser is a high-energy cold laser beam, the heat-affected zone generated when the appearance layer 21 corresponding to the target position melts or vaporizes is small, which can reduce the strength impact on the initial shell 20, so that the obtained shell 100 has good mechanical strength.

[0079] It is understandable that, combined with Figure 4 and Figure 6 As shown, before using ultraviolet laser to irradiate the appearance layer 21 corresponding to the target position, the initial shell 20 can be placed in a cooling jig 40 on the laser irradiation machine 80. The cooling jig 40 can be, for example, a jig with an air flow passage or a water mist passage arranged inside. During the ultraviolet laser irradiation process, the cooling jig 40 can cool the initial shell 20 to further eliminate the residual heat of the ultraviolet laser processing and further reduce the intensity effect of the ultraviolet laser on the initial shell 20.

[0080] In an exemplary embodiment, a method for manufacturing a housing includes the following steps:

[0081] Step S401, providing a shell substrate, wherein the shell substrate includes a first surface;

[0082] Step S402, using a second laser to irradiate a target position on the first surface of the shell substrate, so that the dyne value at the target position on the first surface is higher than the dyne values ​​at other positions on the first surface;

[0083] Step S403, forming an appearance layer covering the first surface to obtain an initial shell;

[0084] Step S404: removing the exterior layer corresponding to the target position on the initial shell to expose the target position of the first surface, thereby obtaining the shell.

[0085] In this embodiment, step S401 is the same as or similar to step S101 shown in the above embodiment, and step S403 to step S404 are the same as or similar to step S102 to step S103 shown in the above embodiment, and are not described in detail here.

[0086] In step S402, Figure 2 , Figure 3 and Figure 6As shown, when the second laser is used to irradiate the shell substrate 10, the shell substrate 10 can be placed in a cooling fixture 40 on the laser irradiation machine 80, so that the cooling fixture 40 can protect the shell substrate 10 during the second laser irradiation process, eliminate the effect of the residual heat of the second laser processing, and reduce the intensity influence of the second laser on the shell substrate 10. The second laser can be a laser whose laser spectrum is in the visible light region and the ultraviolet light region. The present disclosure does not limit the wavelength of the second laser. The second laser irradiates a local position of the first surface 13 of the shell substrate 10, and one or more local positions constitute the target position. When the second laser irradiates the target position of the first surface 13, the second laser can produce an etching effect on the target position, forming a plurality of fine pits, so that the surface roughness of the target position is increased, and the specific surface area at the target position is increased, thereby increasing the dyne value of the target position.

[0087] When the first surface is subjected to plasma treatment or surfactant treatment to increase the dyne value, the main principle is to introduce active groups at the target position of the first surface so that the dyne value at the target position is increased. However, as time goes by, the activity of the active groups gradually weakens, and the dyne value at the target position cannot be at a stable level. In this embodiment, the target position of the first surface is treated with a second laser, and the second laser produces an etching effect at the target position. Compared with the method of using plasma treatment or surfactant treatment, the dyne value at the target position will not decrease over time, and the dyne value at the target position is at a stable level for a long time.

[0088] Exemplarily, during the process of the second laser irradiating the target position of the first surface 13, the laser power of the second laser can be any value between 150W-200W, and the processing rate of the second laser can be any value between 20mm / min-40mm / min. In some examples, when the second laser irradiates the first surface 13, the processing rate can be adjusted based on the laser power, and the higher the laser power, the faster the processing rate. The cooling effect of the cooling fixture 40 and the control of the power of the second laser in a lower range can reduce the adverse effect of the second laser on the strength of the shell substrate 10 while increasing the dyne value of the target position.

[0089] It should be noted that, since the second laser acts on the first surface 13 of the housing substrate 10, Figure 2 and Figure 3As shown, the second laser can be used to locally irradiate the first surface 13 of the shell substrate 10 formed by the decoration layer 11 and the substrate layer 12, or the first surface 13 of the shell substrate 10 after the pattern layer 14 is formed, or the first surface 13 of the shell substrate 10 after the electroplating layer 15 is formed, or the first surface 13 of the shell substrate 10 after the ink layer 16 is formed. That is to say, the present disclosure does not limit the structure of the shell substrate 10 irradiated by the second laser, as long as the second laser acts on the first surface 13 of the shell substrate 10 where the appearance layer has not yet been formed.

[0090] In an exemplary embodiment, a method for manufacturing a housing includes the following steps:

[0091] Step S501, providing a shell substrate, wherein the shell substrate includes a first surface;

[0092] Step S502, applying a protective film on the first surface, wherein the protective film exposes the target position;

[0093] Step S503, using a second laser to irradiate a target position on the first surface of the shell substrate, so that the dyne value at the target position on the first surface is higher than the dyne values ​​at other positions on the first surface;

[0094] Step S504, removing the protective film;

[0095] Step S505, forming an appearance layer covering the first surface to obtain an initial shell;

[0096] Step S506: removing the exterior layer corresponding to the target position on the initial shell to expose the target position of the first surface, thereby obtaining the shell.

[0097] In this embodiment, step S501 is the same as or similar to step S101 shown in the above embodiment, step S503 is the same as or similar to step S402 shown in the above embodiment, and step S505 to step S506 are the same as or similar to step S102 to step S103 shown in the above embodiment, and are not repeated here.

[0098] In step S502, the protective film can be made of a material with high reflectivity or high absorption coefficient, and the position covered by the protective film can reflect the second laser. Before the second laser is used to irradiate the first surface, a protective film is applied to the first surface. For example, a low-viscosity adhesive can be used to bond the protective film to the first surface of the shell substrate to facilitate the subsequent removal of the protective film and reduce the adverse effects on the adhesion of the subsequently formed appearance layer to the first surface. When the second laser irradiates the first surface, the position covered by the protective film can reflect the second laser, so that the second laser only acts on the target position to increase the dyne value of the target position of the first surface. According to the wavelength and processing power of the second laser when it is working, a suitable protective film can be selected for application.

[0099] In step S504, after the second laser irradiates the target position, the dyne value of the target position of the first surface is higher than the dyne value of other positions. Before forming the appearance layer covering the first surface, the protective film covering the first surface is removed so that the appearance layer is tightly bonded to the first surface of the shell substrate, thereby providing good protection for the shell substrate.

[0100] In the production process of the shell provided by the present disclosure, the same laser irradiation machine can be used to perform laser irradiation on the shell twice, the laser wavelengths used in the two laser irradiations can be the same or different, and the two laser irradiations respectively use specific process parameters. During the laser irradiation process, the process parameters are easy to control, the operation is simple, and the applicability is high, and industrial mass production can be carried out. Compared with the local non-spray coating method used in the prior art, the shell produced by the production method disclosed in the present invention has a higher dyne value and can meet the user's usage needs. Compared with only one laser irradiation, or CNC texture production in the prior art, there is a smaller risk of thickness loss and strength loss of the shell.

[0101] In an exemplary embodiment, the present disclosure provides a shell, which is manufactured by the shell manufacturing method provided in the above embodiment. The shell formed by the above manufacturing method can reduce the impact on the shell strength because a lower-power laser is used and a cooling fixture is provided for protection in the process of increasing the dyne value of the target position on the first surface of the shell substrate and in the process of removing the appearance layer at the target position. The shell can be, for example, a shell for covering electronic products. In some embodiments, the shell can be used as the back shell of electronic products such as mobile phones, tablet computers, and smart watches. The dyne value on the surface of the shell is relatively high, which can meet the user's needs for pasting decorative parts and enhance the user's experience. At the same time, the shell has good mechanical strength, so that the shell has good weather resistance and service life.

[0102] 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, etc. The electronic device includes the housing provided in the above embodiment, and the housing may be used as a rear housing of the electronic device, close to the battery of the electronic device. Since the surface of the housing has a high factor value and good mechanical strength, the electronic device has good anti-fall strength and toughness, and can also meet the aesthetic needs of users for attaching decorative parts, thereby improving the user's satisfaction with the use.

[0103] Those skilled in the art will readily appreciate other embodiments of the present invention 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 present invention and include common knowledge or customary techniques in the art that are not disclosed in this disclosure. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0104] It should be understood that the present invention is not limited to the exact construction that has been 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 method for manufacturing a housing, characterized in that: The method for manufacturing the shell includes: Providing a shell substrate, the shell substrate comprising a first surface, the dyne value of a target position of the first surface being higher than the dyne value of other positions of the first surface; forming an appearance layer covering the first surface to obtain an initial shell; The exterior layer corresponding to the target position on the initial shell is removed to expose the target position on the first surface, thereby obtaining the shell.

2. The method for manufacturing a housing according to claim 1, characterized in that: Removing the outer layer corresponding to the target position on the initial shell includes: Under a first preset condition, a first laser is used to irradiate the appearance layer corresponding to the target position to remove the appearance layer corresponding to the target position.

3. The method for manufacturing a housing according to claim 2, characterized in that: The method of irradiating the appearance layer corresponding to the target position with a first laser comprises: scanning the appearance layer to capture the target position; The appearance layer corresponding to the target position is irradiated with a preset light.

4. The method for manufacturing a housing according to claim 3, characterized in that: Scanning the appearance layer to capture the target position includes: Scanning the appearance layer with an image sensor to capture the target position; The step of irradiating the appearance layer corresponding to the target position with a preset light comprises: The appearance layer corresponding to the target position is irradiated with ultraviolet laser.

5. The method for manufacturing a housing according to claim 2, characterized in that: The first preset condition includes: the laser power of the first laser is 80W-120W, and the processing rate of the first laser is 30mm / min-60mm / min.

6. The method for manufacturing a housing according to claim 1, characterized in that: The method for manufacturing the housing further includes: The target position on the first surface of the shell substrate is irradiated with a second laser, so that the dyne value of the target position on the first surface is higher than the dyne value of other positions on the first surface.

7. The method for manufacturing a housing according to claim 6, characterized in that: The laser power of the second laser is 150W-200W, and the processing rate of the second laser is 20mm / min-40mm / min.

8. The method for manufacturing a housing according to claim 6, characterized in that: Before irradiating the target position of the first surface with a second laser, the method for manufacturing the housing further includes: A protective film is attached to the first surface, wherein the protective film exposes the target position; Before forming the exterior layer, the protective film is removed.

9. The method for manufacturing a housing according to any one of claims 1 to 8, characterized in that: The shell substrate includes a substrate layer and a decoration layer which are stacked, and the first surface is a surface of the decoration layer which is away from the substrate layer.

10. The method for manufacturing a housing according to claim 9, characterized in that: The substrate layer is polycarbonate, and the decorative layer is polymethyl methacrylate.

11. The method for manufacturing a housing according to claim 9, characterized in that: The shell substrate further comprises a pattern layer, and the pattern layer covers the substrate layer; an electroplating layer, wherein the electroplating layer covers the pattern layer; An ink layer covers the electroplating layer.

12. A housing, characterized in that: The shell is manufactured by the shell manufacturing method described in any one of claims 1 to 11.

13. An electronic device, characterized in that: The electronic device comprises the housing according to claim 12.

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