CN113710028A

CN113710028A - Electronic equipment, shell and manufacturing method thereof

Info

Publication number: CN113710028A
Application number: CN202110950527.0A
Authority: CN
Inventors: 耿岩
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-08-18
Filing date: 2021-08-18
Publication date: 2021-11-26

Abstract

The application mainly relates to electronic equipment, a shell and a manufacturing method thereof, wherein the shell comprises a shell body and an optical effect layer formed on the shell body, and the optical effect layer enables the shell to show a color along with an angle. The utility model provides a casing passes through the optical effect layer and makes it present the angle of following heterochrosis to present different colours when the user watches the casing from different angles, not only can make the colour of casing abundanter, also be favorable to reducing the harsh demand of other optics retes in the casing to thickness.

Description

Electronic equipment, shell and manufacturing method thereof

Technical Field

The present application relates to the field of electronic devices, and in particular, to an electronic device, a housing, and a method for manufacturing the same.

Background

With the increasing popularity of electronic devices, electronic devices have become indispensable social and entertainment tools in people's daily life, and people have increasingly high requirements for electronic devices. Taking an electronic device such as a mobile phone as an example, users are also increasingly concerned about the visual experience brought by the appearance of the casing (commonly called "battery cover" or "rear cover") of the mobile phone.

Disclosure of Invention

The embodiment of the application provides a shell, which comprises a shell body and an optical effect layer formed on the shell body, wherein the optical effect layer enables the shell to show a flip-flop color.

The embodiment of the application further provides electronic equipment, and the electronic equipment comprises a display module and the shell, and the shell is connected with the display module.

The embodiment of the application further provides a manufacturing method of the shell, and the manufacturing method comprises the following steps: coating adhesive on one side of the shell body; laminating the membrane preset with the optical effect layer with the shell body; tearing off the membrane to transfer the optical effect layer to the shell body; and forming an optical coating layer on one side of the optical effect layer, which is far away from the shell body.

The beneficial effect of this application is: compared with the prior art, the shell provided by the application has the advantages that the optical effect layer is used for displaying the angle-dependent color, so that different colors can be displayed when a user watches the shell from different angles, the color of the shell can be richer, and the harsh requirements of other optical film layers on the thickness in the shell can be reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic disassembled structural diagram of an embodiment of an electronic device provided in the present application;

FIG. 2 is a schematic view of a stacked configuration of an embodiment of a housing provided herein;

FIG. 3 is a schematic view of a stacked configuration of an embodiment of a housing provided herein;

FIG. 4 is a schematic diagram of a path of light incident on a layer of liquid crystal in an embodiment of a housing provided herein;

FIG. 5 is a schematic view of a stacked configuration of an embodiment of a housing provided herein;

FIG. 6 is a schematic view of a stacked configuration of an embodiment of a housing provided herein;

FIG. 7 is a schematic view of a stacked configuration of an embodiment of a housing provided herein;

FIG. 8 is a schematic view of a stacked configuration of an embodiment of a housing provided herein;

FIG. 9 is a schematic flow chart diagram illustrating an embodiment of a method for fabricating a housing provided herein;

fig. 10 is a schematic structural diagram corresponding to different processes in the manufacturing process of the housing provided by the present application.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be noted that the following examples are only illustrative of the present application, and do not limit the scope of the present application. Likewise, the following examples are only some examples and not all examples of the present application, and all other examples obtained by a person of ordinary skill in the art without any inventive work are within the scope of the present application.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1, fig. 1 is a schematic view of a disassembled structure of an embodiment of an electronic device provided in the present application.

In the present application, the electronic device 10 may be a portable device such as a mobile phone, a tablet computer, and a smart watch. In this embodiment, the electronic device 10 is taken as a mobile phone for exemplary explanation.

Referring to fig. 1, an electronic device 10 may include a display module 11, a middle frame 12, and a housing 13. The display module 11 and the housing 13 are respectively located on two opposite sides of the middle frame 12, and can be assembled and connected with the middle frame 12 through one or a combination of assembling modes such as gluing, clamping, welding and the like, so that a basic structure that the display module 11 and the housing 13 clamp the middle frame 12 together is formed after the three are assembled. Further, a cavity with a certain volume may be formed between the display module 11 and the housing 13, and the cavity may be used to set structural members such as the camera module 14, the main board 15, and the battery 16, so that the electronic device 10 can implement corresponding functions. The display module 11, the camera module 14 and other components may be electrically connected to the main board 15, the battery 16 and the like through a Flexible Printed Circuit (FPC), so that they can be supplied with electric power from the battery 16 and can execute corresponding commands under the control of the main board 15.

Further, the edge of the display module 11 may be bent toward the middle frame 12, so that the image displayed on the display module 11 may extend from the front surface of the display module 11 to the side surface thereof in a form similar to a "waterfall". So set up, not only can reduce or even hide the black edge of display module assembly 11 to make electronic equipment 10 can provide bigger demonstration field of vision for the user, can also make display module assembly 11 build a visual effect around the demonstration, thereby make electronic equipment 10 bring one kind and be different from bang screen, water droplet screen, dig the visual experience of flat full-face screen such as hole screen, over-and-under type camera, sliding closure type camera for the user, and then increase electronic equipment 10's competitiveness. Accordingly, the edge of the housing 13 may also be curved toward the middle frame 12, so as to improve the grip feel and aesthetic appearance of the electronic device 10.

Referring to fig. 2, fig. 2 is a schematic view of a laminated structure of an embodiment of the housing provided in the present application.

Referring to fig. 2, the housing 13 may include a housing body 131, and a pattern layer 132, a texture layer 133, an optical coating layer 134, and a cover bottom layer 135 formed on the housing body 131. The housing body 131 is mainly used to satisfy the structural requirement of strength/hardness of the housing 13 to resist external impact; other film layers such as the pattern layer 132, the texture layer 133, the optical coating layer 134, and the cover bottom layer 135 are mainly used to satisfy the colorful appearance requirement of the housing 13. Therefore, when the housing 13 is applied to the electronic device 10, the film layers such as the pattern layer 132, the texture layer 133, the optical coating layer 134, and the cover bottom layer 135 may be located on the side of the housing body 131 facing the inside of the electronic device 10 so as not to be scratched.

The material of the housing body 131 may be transparent glass, plastic, or a transparent composite material formed by glass, plastic, metal, ceramic, or the like. In this embodiment, the housing body 131 may be a composite plate, such as a PC/PMMA composite plate, that is, a plate made of Polycarbonate (PC) and polymethyl methacrylate (PMMA) particles through a co-extrusion process. The thickness of the housing body 131 may be less than 1mm, for example, 0.9mm, 0.8mm, 0.7mm, 0.64mm, 0.5mm, and the like, and may be selected according to actual requirements to meet the structural strength of the housing 13, and to achieve light weight and thinness.

The pattern layer 132 may be made of ink, and may be formed with a specific logo and font through a screen printing process to indicate information such as a corresponding brand and model. The thickness of the pattern layer 132 may be 2-3 μm, such as 2 μm, 2.5 μm, 3 μm, and the like, and may be selected according to actual requirements. Further, the ink used may be specular silver or specular black ink.

The texture layer 133 may be made of Ultraviolet (UV) curable adhesive, and may be formed into a specific texture through a transfer process, so as to enrich the appearance of the housing 13. If the texture layer 133 is too thin, the texture effect is poor, and if the texture layer 133 is too thick, the texture layer 133 is brittle, resulting in poor adhesion. Therefore, the thickness of the texture layer 133 may be 8-12 μm, such as 8 μm, 10 μm, 12 μm, and the like, and may be selected according to actual requirements.

The optical coating layer 134 may include at least one of zirconia, titania, and silica, and may be formed by a vacuum coating process to have a high reflectivity, thereby exhibiting a high color-superimposed appearance effect. The optical coating layer 134 is matched with the texture layer 133, so that the reflection effect of the texture is more gorgeous, and the visual layering sense is increased.

The classification of the vacuum coating field on the coating type according to the film thickness is generally as follows: a film with a thickness of more than 200nm may be called a thick plating film, and a film with a thickness of less than 200nm may be called a thin plating film. The reflective hue of the coating can have hues such as blue, golden yellow, pink and the like according to the thickness of the coating. It is worth noting that: compared with a thin coating film, the thick coating film has wide reflection wave band and high reflectivity, and the visual performance is more dazzling and brighter; however, when the film thickness exceeds 450nm, due to the limitation of coating stress and the capability of electron gun equipment, the film layer is volatile in the testing process, and the defects of film layer falling, cracking or UV aging discoloration and the like occur, so that the further improvement of the appearance effect is limited.

Illustratively, the optical coating layer 134 may be primed from zirconia on which titania and silica are formed in a multi-layer stacked combination. The thickness of the optical coating layer 134 may be 200-450nm, such as 200nm, 300nm, 450nm, and may be specifically selected according to actual requirements; the reflectivity may be 60% to 75%, for example, 60%, 65%, 70%, 75%, etc., and may be selected according to actual requirements.

The cover bottom layer 135 may be made of ink, and may be formed on the optical coating layer 134 by a screen printing process to set off the color of the optical coating layer 134, protect the optical coating layer 134, and meet the fire protection requirement of the housing 13. Specifically, the cover bottom layer 135 may include a main color layer and a fire-retardant ink layer, the former is generally white ink or black ink, black is mainly used for reflecting the color of the optical coating layer 134, and white is mainly used for displaying the transmission color of the optical coating layer 134; the latter is typically a gray ink and may have added to it a fire-blocking filler, such as an acrylic/isocyanate polyurethane curing system, to improve the fire-blocking properties of the housing 13. The thickness of the fireproof ink layer can be 10-15 μm, such as 10 μm, 13 μm, 15 μm and the like, and can be selected and optimized according to actual requirements; in order to achieve better flame retardant and covering effects, 2-3 lines of fireproof ink layers are generally needed to be silk-screened.

Further, the housing 13 may further include a reinforcing layer 136, and the reinforcing layer 136 is located on a side of the housing body 131 facing away from the pattern layer 132, that is, on a side of the housing body 131 facing the outside of the electronic device 10, so as to improve the wear/scratch resistance of the housing 13. The thickness of the reinforcing layer 136 may be 10 to 18 μm, for example, 10 μm, 13 μm, 15 μm, 18 μm, and the like, and is preferably selected according to actual requirements.

In some embodiments, the strengthening layer 136 may include a solidified strengthening liquid, for example, the strengthening liquid is formed on the housing body 131 by a curtain coating process and baked to be solidified into a film.

In other embodiments, the strengthening layer 136 may include glittering sand, such as formed on the housing body 131 by a rubbing process. The plurality of flash sand can be orderly or disorderly arranged on the shell body 131, so that the light reflected by the optical coating layer 134 is further refracted, the emergence angle of the light is further changed, the effect of refracting the light at different angles is also realized, the light effect is not monotonous, and the appearance quality of the shell 13 is favorably improved.

Referring to fig. 3 and 4 together, fig. 3 is a schematic diagram of a stacked structure of an embodiment of the housing provided in the present application, and fig. 4 is a schematic diagram of a path of light incident on the liquid crystal layer in the embodiment of the housing provided in the present application.

The main differences from the above described embodiment are: in this embodiment, with reference to fig. 3, the housing 13 may further include an optical effect layer 137 formed on the housing body 131, where the optical effect layer 137 enables the housing 13 to present a color, that is, the color presented by the housing 13 changes with the change of the viewing angle of the user, so that the color of the housing 13 is richer. The thickness of the optical effect layer 137 may be 2-3 μm, such as 2 μm, 2.5 μm, 3 μm, and the like, and may be selected according to actual requirements.

It should be noted that: in the present application, the upper and lower stacking relationship, that is, the relative position relationship, of the film layers such as the pattern layer 132, the texture layer 133, the optical coating layer 134, the cover bottom layer 135, and the optical effect layer 137 with respect to the housing body 131 can be adjusted according to actual requirements. For appearance quality, other film layers may be further disposed between the film layers to achieve corresponding appearance effects.

Illustratively, the optical effect layer 137 is stacked with the optical coating layer 134 and located on a side of the optical coating layer 134 facing the housing body 131. In other words, the optical coating layer 134 is stacked with the optical effect layer 137 and located on a side of the optical effect layer 137 facing away from the housing body 131. Further, the texturing layer 133 may be interposed between the optical effect layer 137 and the optical coating layer 134. Accordingly, the strengthening layer 136 is located on a side of the housing body 131 facing away from the optical effect layer 137.

It should be noted that: the optical effect layer 137 is formed on the shell body 131, so that the color-angle-dependent color-changing property and the Bragg reflection effect of the optical effect layer 137 are utilized, rich appearance effects can be realized by matching with a simple optical coating process, the limitation that the optical coating layer 134 is limited by the thickness of the film can be favorably improved, a thick coating film can be replaced to a certain extent, the cost is reduced, and the reliability is improved. In short, in the embodiment where the optical effect layer 137 is formed on the housing body 131, the optical coating layer 134 may be a thin coating film, and is not required to be a thick coating film.

In some embodiments, the optical effect layer 137 may include aligned liquid crystals, which may be aligned after alignment, and the alignment direction may be a helical arrangement formed by rotating an angle of the adjacent layer, so that the refractive index of the adjacent layer can be changed according to the change of the angle. Wherein, in conjunction with fig. 4, the wavelength of the reflected light reflected by the oriented liquid crystal satisfies the formula: λ ═ 2 × n × p × sin θ; where λ is the wavelength of the reflected light, n is the average refractive index of the aligned liquid crystal, p is the pitch of the aligned liquid crystal, and θ is the angle between the incident light and the surface of the optical effect layer 137 (i.e., the complementary angle of the incident light). Wherein the aligned liquid crystals can be aligned according to the corresponding pitch p. Thus, with reference to fig. 4, as the viewing angle of the user changes, the incident angle of the incident light entering the eye of the user changes, and θ changes, resulting in a corresponding change in the wavelength λ of the reflected light, thereby changing the color of the reflected light. Therefore, when the observation angles of the users are different, the observed colors of the liquid crystal can generate the effect of changing with the colors, and the dazzling effect is generated.

As an example, the aforementioned liquid crystal may be a cholesteric liquid crystal that is aligned. Specifically, cholesteric liquid crystal molecules have a flat shape and are arranged parallel to each other by virtue of the interaction of end groups to form a layered structure, and the long molecular axes are arranged parallel in each planar layer and like nematic liquid crystals, and the long molecular axes are gradually deflected from layer to form a spiral shape.

In practice, the nematic liquid crystal can be converted into the cholesteric liquid crystal by adding an optically active substance. For example: the aforementioned liquid crystal may include a polymerizable monomer, a nematic liquid crystal, a chiral compound, a photoinitiator, and the like. The polymerizable monomer may be acrylate, isobornyl acrylate, tetrahydrofuran acrylate, etc., the nematic liquid crystal may be CB15, R1011, CH13, E7, etc., the chiral compound may be chiral agent S811, etc., and the photoinitiator may be thioxanthone photoinitiator, (2,4, 6-trimethylbenzoyl) diphenylphosphine oxide, 1-hydroxycyclohexylphenylketone, 2-methyl-1- [4- (methylthio) phenyl ] -2- (4-morpholinyl) -1-propanone, etc., without limitation.

In other embodiments, the optical effect layer 137 may be made of at least one of aluminum ("bronzing"), copper, or copper-zinc alloy ("bronzing"), and may be in the form of scales or sheets, so that the surface and edge corners thereof reflect and scatter light.

Referring to fig. 5 to 8 together, fig. 5 is a schematic diagram of a stacked structure of an embodiment of a housing provided in the present application, fig. 6 is a schematic diagram of a stacked structure of an embodiment of a housing provided in the present application, fig. 7 is a schematic diagram of a stacked structure of an embodiment of a housing provided in the present application, and fig. 8 is a schematic diagram of a stacked structure of an embodiment of a housing provided in the present application.

The main differences from any of the above embodiments are: in this embodiment, the above films may be pre-disposed on a film 138 respectively, and the films 138 are connected to each other or connected to the housing body 131. The membrane 138 may be a film made of a polymer material with certain flexibility, and the specific material may be Polyethylene terephthalate (PET), Polyvinyl chloride (PVC), Thermoplastic polyurethane elastomer rubber (TPU), and the like, which is not limited herein. Therefore, the manufacturing processes of all the films can be divided on different carriers, so that the mutual influence among the manufacturing processes is avoided, the product control is facilitated, the yield is improved, and the reliability is further improved. Of course, this also easily results in a thicker thickness of the housing 13, which can be selected according to the actual requirements.

In some embodiments, with reference to fig. 5, the optical coating layer 134 may be pre-disposed on a membrane 138 and attached to the side of the optical effect layer 137 facing away from the housing body 131. For example: the texture layer 133, the optical coating layer 134, and the cover bottom layer 135 are formed on the membrane 138, and other film layers are normally formed on the housing body 131, and they are bonded by a bonding adhesive 139 such as UV adhesive or OCA adhesive. The texture layer 133 and the optical coating layer 134 may be formed on the same side of the membrane 138, or on opposite sides of the membrane 138. Further, the thickness of the adhesive 139 may be 11-15 μm, for example, 11 μm, 13 μm, 15 μm, and the like, and may be selected according to actual requirements.

In some embodiments, in conjunction with fig. 6, the reinforcing layer 136 may be pre-disposed on a membrane 138 and then integrally formed with the housing body 131 through an injection molding process. For example: the reinforcing layer 136 is formed on the membrane 138 and placed in a corresponding mold, so as to mold PC and PMMA particles on the membrane 138 by an in-mold injection molding process, thereby combining the membrane 138 and the reinforcing layer 136 thereon with the housing body 131, and other film layers are normally formed on the housing body 131.

In some embodiments, referring to fig. 7, the optical effect layer 137 is pre-disposed on a membrane 138 and attached to the housing body 131. For example: the pattern layer 132 is formed on the housing body 131, the optical effect layer 137 is formed on the membrane 138, the two are bonded by a bonding adhesive 139 such as UV adhesive and OCA adhesive, and other film layers are normally formed on the membrane 138.

In some embodiments, in conjunction with fig. 8, the embodiments shown in fig. 5-7 may be further organically combined. For example: the strengthening layer 136 is formed on a membrane 138 and is integrally formed with the housing body 131 through an injection molding process, and the pattern layer 132 is normally formed on the housing body 131; an optical effect layer 137 is formed on the other film 138; the texture layer 133, the optical coating layer 134, and the cover bottom layer 135 are formed on a further film 138, and they are bonded to each other by a bonding adhesive 139 such as UV adhesive, OCA adhesive, or the like.

Referring to fig. 9 and 10, fig. 9 is a schematic flowchart of an embodiment of a method for manufacturing a housing provided by the present application, and fig. 10 is a schematic structural diagram corresponding to different processes in a manufacturing process of the housing provided by the present application. It should be noted that: for convenience of description, the steps of fabricating a certain housing will be described in a specific order below; however, the housing may be made in a different order of steps, with additional steps added or certain steps reduced (combined).

Step S101: and manufacturing a shell body.

For example, the PC particles and the PMMA particles are mixed according to a certain proportion, and then the corresponding PC/PMMA composite board is manufactured through a co-extrusion process. The parameters such as size, shape, thickness, etc. of the composite board can be designed reasonably according to the actual requirements of the shell 13, and can also be subjected to corresponding shaping procedures, so as to obtain the shell body 131.

Step S102: a pattern layer is formed on one side of the housing body.

Illustratively, a corresponding ink, such as a mirror silver ink or a mirror black ink, is selected/prepared, and a specific logo and a font are formed on the housing body 131 through a screen printing process to indicate information of a corresponding brand, model, etc., so as to obtain the pattern layer 132.

Step S103: and coating the bonding glue on one side of the pattern layer, which is far away from the shell body.

Illustratively, a coating process is used to coat a bonding paste 139 such as UV paste, OCA paste, etc. on the pattern layer 132. In the embodiment, the bonding adhesive 139 is exemplified as a UV adhesive.

Step S104: and attaching the membrane preset with the optical effect layer to the shell body.

Illustratively, the side of the optical effect layer 137 on the membrane 138 is attached to the attachment glue 139. Of course, in other embodiments, in conjunction with fig. 8, the other side of the membrane 138 opposite to the optical effect layer 137 may also be attached with the attaching glue 139. In this embodiment, the optical effect layer 137 includes aligned liquid crystal as an example for exemplary explanation.

Before step S104, the liquid crystal may be coated on a film 138 by a coating process, and the liquid crystal may be aligned. For example: the film 138 is coated with an alignment agent, and then with a liquid crystal, and the liquid crystal is aligned by the alignment agent.

Specifically, the orientation agent may be an aqueous orientation agent, for example, a water-soluble modified polyvinyl alcohol orientation agent. Of course, in other embodiments, the above-mentioned alignment agent may also be other types of alignment agents, such as polyimide alignment agent, etc. Further, performing induced orientation and drying treatment on the orientation agent to form an orientation layer; then, a liquid crystal solution is coated on the alignment layer, specifically, the liquid crystal solution can be coated by roll coating, spray coating, curtain coating, etc., and the liquid crystal in the coated liquid crystal solution can be aligned according to the alignment manner of the alignment layer, thereby realizing alignment. The liquid crystal solution may include a mixture of an organic solvent and the polymerizable monomer, the nematic liquid crystal, the chiral compound, and the photoinitiator, and the organic solvent may be 40% to 60% by mass of the mixture, for example, 40%, 50%, 60%, and the like. Further, after the liquid crystal solution is applied, the liquid crystal solution may be baked in a tunnel furnace, the solvent may be removed, and the liquid crystal may be fixed by photo-curing, thereby forming the optical effect layer 137 on the film 138.

Step S105: the membrane is torn off to transfer the optical effect layer to the housing body.

As an example, for the housing 13, the tear-off film 138 is formed directly on the housing body 131 in this step corresponding to the optical effect layer 137. Further, although the membrane 138 may be retained in the embodiment shown in fig. 7 and/or fig. 8, the removal of the membrane 138 in this embodiment not only reduces the thickness of the housing 13, but also allows the optical effect layer 137 to be sandwiched by the adhesive 139 and the texture layer 133 formed in the subsequent processes. Because the materials of the adhesive 139 and the texture layer 133 can be UV glue, the liquid crystal in the optical effect layer 137 can be fixed, so as to increase the reliability of each film layer on the housing body 131.

Step S106: and forming a texture layer on the side of the optical effect layer, which faces away from the shell body.

As an example, UV glue is coated on the optical effect layer 137 through a coating process, and then the UV glue is subjected to a photo-curing process to be cured; and a specific pattern or texture is transferred to the UV paste through the imprinting mold before the UV paste is completely cured, thereby obtaining the texture layer 133.

Step S107: and forming a strengthening layer on the other side of the shell body.

As an example, a UV glue is coated on the other side of the housing body 131 away from the pattern layer 132 through a coating process, and then the UV glue is subjected to a photo-curing process to be cured; and transfer the glittering sand thereto by a rubbing process before the UV glue is completely cured. Specifically, the membrane with the flash sand and the shell body 131 in this step are placed in a mold together, the side of the flash sand on the membrane faces the UV glue, the membrane is tightly attached to the shell body 131 under the action of vacuum or mechanical pressure, and then the membrane is torn off to leave the flash sand on the shell body 131.

In other embodiments, the reinforcing layer 136 can be obtained by spraying a reinforcing liquid on the other side of the housing body 131 away from the pattern layer 132 through a spraying process and baking the reinforcing liquid. Further, after the strengthening liquid is completely dried, a layer of gloss oil and uniform gloss oil crystal dots can be printed on the strengthening layer 136 through a 3D printing process, and a visual effect similar to glittering sand can be formed.

It should be noted that: although both the 3D printing process and the rubbing process can form the visual effect of the glittering sand, the former mainly forms the prism surface pits smaller than or equal to the micron on the surface of the strengthening layer 136, and the latter mainly forms the prism surface bumps smaller than or equal to the micron on the surface of the UV glue layer, in terms of microstructure, the sand effect of the bumps is more fine and smooth than the pits.

Step S108: and forming an optical coating layer on one side of the optical effect layer, which is far away from the shell body.

Illustratively, the optical coating layer 134 is formed by depositing zirconium, titanium and silicon on the side of the optical effect layer 137 facing away from the housing body 131 through a vacuum coating process under an oxygen atmosphere to form films of zirconium oxide, titanium oxide and silicon oxide, respectively. Based on the above description, the optical coating layer 134 may be a thin coating or a thick coating.

Step S109: and a cover bottom layer is formed on one side of the optical coating layer, which is far away from the shell body.

As an example, a main color layer, such as white ink or black ink, is formed on the side of the optical coating layer 134 facing away from the housing body 131 by a silk-screen process; and forming a fireproof ink layer on the main color layer, for example, adding a fireproof filler into gray ink, wherein the fireproof filler can be a polyurethane curing system prepared from acrylic acid/isocyanate, and further obtaining the cover bottom layer 135.

Based on the above description, and with reference to fig. 5, the optical coating layer 134, the cover bottom layer 135 and the texture layer 133 can be formed on a membrane 138 and then bonded to the optical effect layer 137 through the adhesive layer 139. At the moment, the thickness of the optical coating layer 134 can be more than 700nm or even higher, and richer appearance effect is obtained.

Further, the housing 13 manufactured through the above steps may be changed in shape from 2D to 3D through a high pressure molding process. When the optical coating layer 134 is a thin coating film in step S108, the high pressure forming process may be performed after step S109; when the optical coating layer 134 is a thick coating in step S108, the high pressure forming process may be performed before step S108 to avoid cracking of the optical coating layer 134 due to excessive stress.

Compared with the prior art, the liquid crystal, the thick coating film and the flash sand are organically formed on the shell body through the manufacturing method, so that the shell has the pure color and luster and the angle-dependent heterochromatic characteristic of the liquid crystal in appearance, and has the high reflectivity of the liquid crystal and the thickness film, reflected light of the shell still has very strong brightness and reflection effect after being weakened through multi-angle refraction of the outer flash sand surface, the appearance is gorgeous and rich, the color is bright, the sand effect is fine and noble, different colors are shown at different angles, and the appearance expressive force and the competitiveness of the product are improved. Specifically, the method comprises the following steps:

1) even if the film is thin, the angle-dependent color characteristics of the liquid crystal can also improve the reflectivity of the shell, thereby making up for the deficiency of the film;

2) the color of the shell is richer through the superposition combination of the liquid crystal and the thick coating film, the expressive force is stronger, and the visual impact is strong;

3) the shell has very high reflectivity through the superposition combination of the liquid crystal and the thick coating film, and the appearance effect of a pure thick coating film above 700nm can be realized under the condition that the film thickness of the existing thick coating film is limited in mass production (less than 450 nm);

4) the micro-convex points of the flash sand are further introduced through the rubbing process, so that the shell has the effects of a high-reflection film layer and a high-refraction film layer, the appearance is fine and soft, fine defects can be covered, and the appearance yield is improved;

5) the (UV) texture layer and the (flash sand) micro-convex points form a double-texture structure, the liquid crystal and the thick coating film form a double-layer electroplating effect, and a brand-new double-texture double-plating dazzling color flashing effect is formed.

The above description is only a part of the embodiments of the present application, and not intended to limit the scope of the present application, and all equivalent devices or equivalent processes performed by the content of the present application and the attached drawings, or directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims

1. A housing comprising a housing body and an optical effect layer formed on the housing body, the optical effect layer causing the housing to exhibit a gonioapparent color.

2. The housing of claim 1, wherein the optical effect layer comprises oriented liquid crystals.

3. The housing of claim 2, further comprising an optical coating disposed in a stack with the optical effect layer, the optical coating being on a side of the optical effect layer facing away from the housing body.

4. The housing of claim 3, wherein the optical coating comprises at least one of zirconia, titania, and silica.

5. The housing of claim 3, wherein the optical coating has a thickness greater than 200 nm.

6. The housing of claim 3, wherein the optical coating is pre-disposed on a film and attached to a side of the optical effect layer facing away from the housing body.

7. The housing of claim 1 further comprising a strengthening layer on a side of the housing body facing away from the optical effect layer.

8. The housing of claim 7 wherein the strengthening layer comprises sparkling sand.

9. The housing of claim 8 wherein the reinforcement layer is pre-formed on a membrane and is integrally formed with the housing body by an injection molding process.

10. An electronic device, comprising a display module and the housing of any one of claims 1-9, wherein the housing is connected to the display module.

11. A method of making a housing, the method comprising:

coating adhesive on one side of the shell body;

attaching a membrane with a preset optical effect layer to the shell body;

tearing off the membrane to transfer the optical effect layer to the housing body;

and forming an optical coating layer on one side of the optical effect layer, which is far away from the shell body.