CN107231772B - Mobile terminal rear shell, manufacturing method of mobile terminal rear shell and mobile terminal - Google Patents
Mobile terminal rear shell, manufacturing method of mobile terminal rear shell and mobile terminal Download PDFInfo
- Publication number
- CN107231772B CN107231772B CN201710590510.2A CN201710590510A CN107231772B CN 107231772 B CN107231772 B CN 107231772B CN 201710590510 A CN201710590510 A CN 201710590510A CN 107231772 B CN107231772 B CN 107231772B
- Authority
- CN
- China
- Prior art keywords
- layer
- mobile terminal
- color
- shell
- decorative layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
- H05K5/0243—Mechanical details of casings for decorative purposes
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/04—Metal casings
Abstract
The invention relates to a mobile terminal rear shell, a manufacturing method of the mobile terminal rear shell and a mobile terminal. The mobile terminal rear shell comprises a shell body, a partition strip and a decoration layer. The shell is provided with an outer surface and an inner surface, and a gap is formed in the shell and penetrates through the outer surface and the inner surface; the partition strip is embedded in the gap and fixedly connected with the shell; the decorative layer covers one side of the partition strip close to the outer surface and is fixedly connected with the shell; the color difference value delta E between the color of the partition strip covered by the decorative layer and the color of the outer surface is 0-2.5. Above-mentioned mobile terminal backshell sets up the decorative layer through the one side that is close to the surface at the partition strip for the colour of the partition strip that is covered by the decorative layer is 0 ~ 2.5 with the range of the colour difference value delta E of the colour of the surface of casing, just can make the approximate integrated into one piece of outward appearance of mobile terminal backshell, thereby has promoted the wholeness and the aesthetic property of mobile terminal backshell.
Description
Technical Field
The present invention relates to the field of electronic devices, and in particular, to a mobile terminal rear case, a method for manufacturing the mobile terminal rear case, and a mobile terminal.
Background
The backshell of a mobile terminal (mobile phone, tablet, etc.) is generally made of a metal material. In order to prevent the metal rear shell from shielding the signal transmission or reception of the mobile terminal, a gap needs to be formed in the rear shell. The gap is generally filled with a plastic material. The metal portion of the rear housing may be treated by a surface treatment process (e.g., anodizing) to improve the usability and aesthetics of the rear housing, but the plastic portion in the gap may not be treated directly, thereby causing the color of the metal portion and the plastic portion of the rear housing to be different, which affects the appearance integrity of the rear housing.
Disclosure of Invention
In view of the above, it is necessary to provide a mobile terminal rear case, a method for manufacturing the same, and a mobile terminal, which address the problem that the color of the metal part and the plastic part of the rear case of the mobile terminal are not consistent.
A mobile terminal back case, comprising:
the shell is made of metal and provided with an outer surface and an inner surface which are oppositely arranged, and a gap is formed in the shell and penetrates through the outer surface and the inner surface;
the partition strip is made of an insulating material, is embedded in the gap and is fixedly connected with the shell; and
the decorative layer covers one side, close to the outer surface, of the partition strip and is fixedly connected with the shell; the color difference value delta E between the color of the partition strip covered by the decorative layer and the color of the outer surface ranges from 0 to 2.5.
In one embodiment, the gap includes a first receiving groove near the inner surface and a second receiving groove near the outer surface, and the first receiving groove is communicated with the second receiving groove; the partition strip is located in the first accommodating groove, the decorative layer is located in the second accommodating groove, and the surface, close to the outer surface, of the decorative layer is flush with the outer surface.
In one embodiment, the decorative layer is further overlaid on the outer surface of the housing.
In one embodiment, the partition strip is made of plastic; the decorative layer comprises an adhesive layer and a colored paint layer, the adhesive layer is adhered to one side, close to the outer surface, of the partition strip, the colored paint layer is adhered to one side, close to the outer surface, of the adhesive layer, and the color difference value delta E between the color of the partition strip covered by the colored paint layer and the color of the outer surface is 0-2.5.
In one embodiment, the decorative layer further includes a reinforcing layer, the reinforcing layer is adhered to one side of the colored paint layer close to the outer surface, and the material of the reinforcing layer is a transparent material.
In one embodiment, the decorative layer has a thickness of 7 to 50 microns.
In one embodiment, the decorative layer has a thickness of 8 to 45 microns.
In one embodiment, the adhesive layer has a thickness of 3 to 9 microns.
In one embodiment, the thickness of the adhesive layer is 7.5 to 8.5 microns.
In one embodiment, the thickness of the color paint layer is 3 microns to 9 microns.
In one embodiment, the thickness of the color paint layer is 7.5 microns to 8.5 microns.
A method for manufacturing a rear case of a mobile terminal comprises the following steps:
processing a decorative layer on the film carrier to prepare a film;
adhering the adhesive film to one side of the outer surface, close to the rear shell of the mobile terminal, of the partition strip to enable the decorative layer to be fixedly connected with the shell, wherein the color difference value delta E between the color of the partition strip covered by the decorative layer and the color of the outer surface is 0-2.5; and
tearing off the film carrier.
In one embodiment, the step of coating the decorative layer on the film carrier to prepare the adhesive film comprises:
coating a colored paint layer on the film carrier, wherein the thickness of the colored paint layer is 3-9 micrometers; and
and coating an adhesive layer on the surface of the colored paint layer, which is far away from the film carrier, wherein the thickness of the adhesive layer is 3-9 micrometers.
In one embodiment, before the step of applying the color paint layer on the surface of the film carrier, the method further includes:
and coating a strengthening layer on the surface of the film carrier, wherein the strengthening layer is positioned between the colored paint layer and the film carrier, and the thickness of the strengthening layer is 3-9 micrometers.
In one embodiment, the method for manufacturing the rear case of the mobile terminal further comprises the following steps:
and a second accommodating groove is formed in the outer surface and communicated with the first accommodating groove of the rear shell of the mobile terminal, and the extending direction of the second accommodating groove is the same as that of the first accommodating groove.
In one embodiment, the width of the decorative layer is matched with the width of the second accommodating groove, the decorative layer is located in the second accommodating groove, and the surface of the decorative layer close to the outer surface is flush with the outer surface.
In one embodiment, the shape of the film is matched with that of the outer surface, the decorative layer is covered on the outer surface, and the decorative layer is fixedly connected with the shell.
A mobile terminal comprises a screen component and the mobile terminal rear shell, wherein the mobile terminal rear shell is fixedly connected with the screen component.
A mobile terminal comprises a screen component and a mobile terminal rear shell manufactured by the manufacturing method of the mobile terminal rear shell, wherein the mobile terminal rear shell is fixedly connected with the screen component.
According to the mobile terminal, the manufacturing method of the mobile terminal rear shell and the mobile terminal rear shell, the partition strip of the mobile terminal rear shell is embedded in the gap, the decorative layer is arranged on one side, close to the outer surface of the shell, of the partition strip, and the color difference value delta E between the color of the surface of the partition strip covered with the decorative layer and the color of the outer surface of the shell is in the range of 0-2.5, so that the color of the partition strip covered with the decorative layer and the color of the outer surface of the shell tend to be consistent. When the partition strip is plastic material, through covering the decorative layer on the plastic part, just can make the plastic part of mobile terminal backshell no longer have obvious colour difference with the metal part for the outward appearance of mobile terminal backshell is approximate integrated into one piece, thereby has promoted the wholeness and the aesthetic property of mobile terminal backshell.
Drawings
FIG. 1 is a front view of a rear housing of a mobile terminal in one embodiment;
FIG. 2 is a front view of a rear housing of the mobile terminal in another embodiment;
FIG. 3 is a partial cross-sectional view of the rear housing of the mobile terminal of FIG. 1 taken along A-A;
FIG. 4 is another partial cross-sectional view of the rear housing of the mobile terminal of FIG. 1 taken along A-A;
FIG. 5 is a cross-sectional view of an embodiment of a patch;
fig. 6 is a flowchart of manufacturing a rear case of the mobile terminal shown in fig. 1;
FIG. 7 is a flowchart of step S100 shown in FIG. 6;
fig. 8 is a perspective view of a mobile terminal in an embodiment.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 and 2, in one embodiment, the mobile terminal back case 10 is a back case of a mobile phone. Referring to fig. 3 together, the mobile terminal rear case 10 includes a case body 100, a partition strip 200, and a decoration layer 300. The housing 100 is made of metal, and the housing 100 has an outer surface 110 and a second surface (not shown). Specifically, in one embodiment, the housing 100 is made of aluminum alloy, the outer surface 110 is configured to be held by a user, and the inner surface is disposed opposite to the outer surface 110. In one embodiment, one side of the inner surface may be provided with a screen assembly fixedly connected with the mobile terminal rear case 10, and both the screen assembly and the mobile terminal rear case 10 are part of the mobile terminal. The housing 100 is formed with a slit (not shown) that extends through the outer surface 110 and the inner surface of the housing 100. In one embodiment, the housing 100 is substantially rectangular, and a mounting hole 120 is formed at one end of the housing 100, and the mounting hole 120 is used for light transmission of the camera module. A slit is located at one end of the case 100 near the mounting hole 120, the slit extends in the width direction of the case 100, and the slit penetrates the outer surface 110 and the inner surface of the case 100. In one embodiment, there are two slots, one at the end of the housing 100 near the mounting hole 120 and the other at the other end of the housing 100.
In the embodiment shown in fig. 1, the slit is substantially linear, and extends in the width direction of the housing 100. In the embodiment shown in fig. 2, the slot is substantially C-shaped, proximate to an edge of the housing 100 and extending in a direction along the contour of the housing 100. In one embodiment, the two slits are substantially double-C-shaped, and the slits are located near the edges of the housing 100 and extend along the contour of the housing 100 from one side of the housing 100 to the other side of the housing 100. In other embodiments, the slot may have other shapes. For example, one of the slits may be C-shaped, and the other slit may be straight. The partition strip 200 is embedded in the gap, the partition strip 200 is made of an insulating material, and the partition strip 200 is fixedly connected to the housing 100. In one embodiment, the material of the partition bar 200 is plastic. In one embodiment, the plastic is filled in the gap by injection molding, so that the housing 100 is tightly connected with the partition bar 200. The decoration layer 300 covers the side of the partition strip 200 close to the outer surface 110 and is fixedly connected with the housing 100. In an embodiment, the decoration layer 300 may also be fixedly connected with the partition strip 200. The decorative layer 300 has a certain light transmittance, and the color difference Δ E between the color of the partition strip 200 covered by the decorative layer 300 and the color of the outer surface 110 is in the range of 0 to 2.5.
In the mobile terminal rear case 10, the partition strip 200 is embedded in the gap, and the decorative layer 300 is disposed on the side of the partition strip 200 close to the outer surface 110 of the casing 100, so that the color difference Δ E between the color of the surface of the partition strip 200 covered by the decorative layer 300 and the color of the outer surface 110 of the casing 100 is in the range of 0 to 2.5, and the color of the surface of the partition strip 200 covered by the decorative layer 300 and the color of the outer surface of the casing 100 tend to be the same. When the partition strip 200 is made of a plastic material, the plastic part and the metal part of the rear case 10 of the mobile terminal do not have obvious color difference by covering the decorative layer 300 on the plastic part, so that the appearance of the rear case 10 of the mobile terminal is approximately integrally formed, and the integrity and the attractiveness of the rear case 10 of the mobile terminal are improved.
Referring to fig. 3, in an embodiment, the decoration layer 300 includes an adhesive layer 310 adhered to a surface of the partition strip 200 facing away from the inner surface, and a colored paint layer 320 adhered to a surface of the adhesive layer 310 facing away from the inner surface, wherein a color difference Δ E between a color of the colored paint layer 320 and a color of the outer surface 110 is in a range of 0 to 2.5. Specifically, in one embodiment, the material of the adhesive layer 310 has plastic-like characteristics, and the material of the adhesive layer 310 has metal-like characteristics. The adhesive layer 310 is adhered to the partition bar 200 in the slit and can be closely attached to the surface of the partition bar 200. The color paint layer 320 is adhered to the adhesive layer 310 and can be tightly connected with the surface of the adhesive layer 310. The colored paint layer 320 has a color, and the material of the colored paint layer 320 can be prepared according to the color of the outer surface 110 of the mobile terminal rear housing 10, so that the color difference value Δ E between the color of the prepared colored paint layer 320 covered on the surface of the partition strip 200 and the color of the outer surface 110 of the mobile terminal rear housing 10 is in the range of 0-2.5, i.e., the color of the partition strip 200 covered with the colored paint layer 320 and the color of the outer surface 110 of the mobile terminal rear housing 10 have almost no difference in vision, so as to improve the integrity and the aesthetic property of the mobile terminal rear housing 10.
In one embodiment, the thickness of the adhesive layer 310 is 3 to 9 micrometers, which is advantageous for the connection stability of the adhesive layer 310 and the partition bar 200 and the connection stability of the adhesive layer 310 and the color paint layer 320 when the thickness of the adhesive layer 310 is within the above range. In an embodiment, the thickness of the color paint layer 320 is 3 to 9 micrometers, which is beneficial for the color paint layer 320 to present a uniform color and can ensure that the color paint layer 320 is stably connected with the adhesive layer 310 when the thickness of the color paint layer 320 is within the above range. Further, in an embodiment, the thickness of the adhesive layer 310 is 7.5 to 8.5 microns, and when the thickness of the adhesive layer 310 is within this range, not only can the stability of the connection between the adhesive layer 310 and the partition strip 200 and the colored paint layer 320 be achieved, but also the molding process of the adhesive layer 310 is facilitated, and the material usage of the adhesive layer 310 is saved. In an embodiment, the thickness of the colored paint layer 320 is 7.5 micrometers to 8.5 micrometers, and when the thickness of the colored paint layer 320 is within the range, the colored paint layer 320 can present a uniform color, the colored paint layer 320 and the adhesive layer 310 can be stably connected, the molding processing of the colored paint layer 320 is facilitated, and the material usage of the colored paint layer 320 is saved.
In one embodiment, the decorative layer 300 further includes a reinforcing layer 330, the reinforcing layer 330 is adhered to the surface of the colored paint layer 320 facing away from the inner surface, and the material of the reinforcing layer 330 is a transparent material. The reinforcement layer 330 functions to improve the surface hardness and strength of the decorative layer 300 and prevent the colored paint layer 320 from being easily damaged during use. In one embodiment, the strengthening layer 330 is made of UV (Ultraviolet) curable adhesive, which is easy to use and can be cured only by irradiation of Ultraviolet light after being coated on the colored paint layer 320. The cured strengthening layer 330 is transparent and has little effect on the color of the pigmented paint layer 320. In one embodiment, the thickness of the reinforcing layer 330 is 3 mm to 9 mm, which is favorable for the stable connection between the reinforcing layer 330 and the color paint layer 320 when the thickness of the reinforcing layer 330 is within the above range. Further, in an embodiment, the thickness of the reinforcing layer 330 is 7.5 micrometers to 8.5 micrometers, and when the thickness of the reinforcing layer 330 is within this range, not only the stability of the connection between the reinforcing layer 330 and the color paint layer 320 can be achieved, but also the hardness and strength of the reinforcing layer 330 can be ensured, so that the reinforcing layer 330 can provide good protection for the color paint layer 320.
In one embodiment, the thickness of the decorative layer is 7 to 50 microns. In one embodiment, the thickness of the decorative layer is 8-45 microns. When the thickness of the decoration layer 300 is within the above range, it is favorable for the decoration layer 300 and the partition strip 200 in the gap to form a tight connection, which can not only ensure the stability of the decoration layer 300, but also avoid the adverse effect of the decoration layer 300 on the appearance of the mobile terminal rear case 10 due to too large thickness. Specifically, in one embodiment, the thickness of the adhesive layer 310 can be 8 microns, the thickness of the color paint layer 320 can be 8 microns, the thickness of the reinforcing layer 330 can be 8 microns, and the thickness of the decorative layer 300 after the adhesive layer 310, the color paint layer 320, and the reinforcing layer 330 are stacked and cured in sequence is approximately 24 microns. The decorative layer 300 having the above-mentioned structure can be firmly connected with the partition bars 200 in the slits, thereby ensuring the hardness and strength of the decorative layer 300, and also achieving that the color difference value of the decorative layer 300 and the outer surface 110 of the case 100 is within a predetermined range, so that the outer surface of the rear case 10 of the mobile terminal exhibits good integrity. It is understood that the reinforcing layer 330 may be omitted from the decorative layer 300 without affecting the function of the decorative layer 300 by omitting the reinforcing layer 330. In other embodiments, a material for increasing the strength and hardness of the colored paint layer 320 may be added to the material of the colored paint layer 320, so that the colored paint layer 320 has sufficient strength and hardness.
Referring to fig. 4, in an embodiment, the gap includes a first receiving groove (not shown) near the inner surface of the housing 100 and a second receiving groove (not shown) near the outer surface 110 of the housing 100, and the first receiving groove and the second receiving groove are communicated. The partition strip 200 is located in the first receiving groove, the decoration layer 300 is located in the second receiving groove, and a surface of the decoration layer 300 close to the outer surface 110 is flush with the outer surface 110. By processing the second receiving groove on the housing 100 of the rear case and disposing the decoration layer 300 in the second receiving groove, it is beneficial to align the decoration layer 300 with the gap on the one hand, so as to facilitate the processing of the decoration layer 300 and the rear case 10 of the mobile terminal. On the other hand, by providing the second receiving groove, the surface of the decoration layer 300 is easily aligned with the outer surface 110 of the mobile terminal rear case 10, so that the light reflection caused by the protrusion generated on the mobile terminal rear case 10 can be prevented, and the integrity of the appearance of the mobile terminal rear case 10 can be ensured. It is understood that the depth of the second receiving groove can be adaptively adjusted according to the thickness of the decoration layer 300. Further, since the decoration layer 300 is disposed in the second receiving groove, when the decoration layer 300 fills the second receiving groove, the groove wall of the second receiving groove can protect the decoration layer 300 well. The thickness of the decoration layer 300 can be very small, and it is only necessary to ensure that the color difference Δ E between the color of the color paint layer 320 in the decoration layer 300 covering the surface of the partition bar 200 and the color of the outer surface 110 of the casing 100 is in the range of 0 to 2.5. It can be understood that, when the second receiving groove is formed on the outer surface 110 of the casing 100, the decoration layer 300 may not contact with the partition strip 200, that is, a gap may exist between the decoration layer 300 and the partition strip 200, the decoration layer 300 is fixedly connected to the casing 100, and after the decoration layer 300 covers the partition strip 200, a color difference value Δ E between a color formed by the light reflected by the decoration layer 300 and the partition strip 200 and a color of the outer surface 110 of the casing 100 may also be in a range of 0 to 2.5.
In one embodiment, the covering area of the decoration layer 300 exceeds the area of the gap, i.e. the decoration layer 30 covers both the gap and the outer surface 110 of the casing 100, and the decoration layer 300 is fixedly connected to the casing 100. Specifically, in one embodiment, the area of the decoration layer 300 is approximately equal to the area of the outer surface 110 of the casing 100, and the decoration layer 300 is covered on the outer surface 110 of the casing 100 by the adhesive layer 310, so that the decoration layer 300 can completely cover the area around the gap. In an embodiment, the decoration layer 300 is fixedly connected to the partition strip 200 in the gap and fixedly connected to the casing 100, and the surface of the entire mobile terminal rear shell 10 for the user to hold substantially presents the color formed by covering the color paint layer 320 on the outer surface 110 of the casing 100, so that the appearance of the mobile terminal rear shell 10 is nearly integrated, and the gap at the connection position of the gap and the casing 100 is also shielded.
Referring to fig. 5 and 6, in an embodiment, a method of manufacturing the rear case 10 of the mobile terminal is also provided. The method of manufacturing the rear case 10 of the mobile terminal includes the following steps.
Step S100, the decoration layer 300 is processed on the film carrier 400 to prepare the adhesive film 20.
Specifically, in one embodiment, the material of the film carrier 400 is PET (Polyethylene terephthalate), and the PET film carrier 400 has excellent physical and mechanical properties in a wide temperature range, and the electrical insulation property of the PET film carrier 400 is excellent, and the creep resistance, the fatigue resistance, the friction resistance, and the dimensional stability are all good. The film carrier 400 functions to provide support for the decoration layer 300, so as to facilitate coating of the decoration layer 300 on the film carrier 400, and the film carrier 400 can also be smoothly torn off from the decoration layer 300, so that the decoration layer 300 covers the partition strip 200 of the mobile terminal rear case 10.
In an embodiment, the step S100 may further specifically include the following steps.
Step S110, a strengthening layer 330 is coated on the surface of the membrane carrier 400.
Specifically, in one embodiment, the strengthening layer 330 is directly coated on the surface of the membrane carrier 400, and the material of the strengthening layer 330 is a transparent material. In one embodiment, the strengthening layer 330 is directly exposed to the environment, and therefore the strengthening layer 330 is required to have a high hardness and strength to prevent the strengthening layer 330 from being easily worn or damaged. In an embodiment, the strengthening layer 330 is made of UV (Ultraviolet ray) curable adhesive, which is easy to use and can be cured by irradiation of Ultraviolet ray, and the cured UV layer is transparent and is beneficial to the transmission of light. In one embodiment, the thickness of the reinforcing layer 330 is 3 mm to 9 mm, and the reinforcing layer 330 has better strength and hardness when the thickness of the reinforcing layer 330 is within the above range. Further, in one embodiment, the thickness of the reinforcing layer 330 is 7.5 microns to 8.5 microns, and when the thickness of the reinforcing layer 330 is within this range, the hardness and strength of the reinforcing layer 330 can be ensured, so that the thickness of the reinforcing layer 330 does not need to be too large to save material of the reinforcing layer 330.
Step S120, a colored paint layer 320 is coated on the reinforcing layer 330, and the color of the colored paint layer 320 should ensure that the color difference Δ E between the color formed by the reflected light after the colored paint layer 320 covers the partition strip 200 and the color of the outer surface 110 is within a range of 0 to 2.5.
Specifically, in one embodiment, the pigmented paint layer 320 is coated on the reinforcing layer 330, and the pigmented paint layer 320 can be tightly coupled to the surface of the reinforcing layer 330 facing away from the film carrier 400. The colored paint layer 320 has a color and a certain light transmittance, and the material of the colored paint layer 320 can be prepared according to the color of the outer surface 110 of the rear case 10 of the mobile terminal, so that the color difference value Δ E between the color of the prepared colored paint layer 320 covered on the partition strip 200 and the color of the outer surface 110 of the case 100 is in the range of 0-2.5, i.e., the color of the colored paint layer 320 covered on the partition strip 200 and the color of the outer surface 110 of the rear case 10 of the mobile terminal are almost not different visually. Since the reinforcing layer 330 is transparent, the color of the colored paint layer 320 is not substantially affected by the reinforcing layer 330, and therefore the color of the colored paint layer 320 can be well matched with the color of the outer surface 110 of the housing 100. In one embodiment, the thickness of the color paint layer 320 is 3 to 9 micrometers, which is beneficial to the color paint layer 320 to present a uniform color and ensure a stable connection between the color paint layer 320 and the reinforcing layer 330 when the thickness of the color paint layer 320 is within the above range. Further, in an embodiment, the thickness of the colored paint layer 320 is 7.5 micrometers to 8.5 micrometers, and when the thickness of the colored paint layer 320 is within the range, the colored paint layer 320 can present a uniform color, and the stable connection between the colored paint layer 320 and the reinforcing layer 330 is ensured, which is also beneficial to the processing of the colored paint layer 320, and since the color of the colored paint layer 320 can be uniformly distributed without further increasing the thickness of the colored paint layer 320, the material usage of the colored paint layer 320 can be saved. It is understood that the color paint layer 320 may also be coated on the strengthening layer 330 by ink-jet or silk-screen printing.
In step S130, an adhesive layer is coated on the surface of the colored paint layer 320 facing away from the film carrier 400 to prepare the adhesive film 20.
Specifically, in one embodiment, the material of the adhesive layer 310 has plastic-like properties. The adhesive layer 310 adheres to the colored lacquer layer 320 and can be tightly connected to the surface of the colored lacquer layer 320 facing away from the film carrier 400. The adhesive layer 310 functions to be firmly connected with the partition bars 200 in the gap of the rear case 10 of the mobile terminal, thereby facilitating the colored paint layer 320 and the reinforcing layer 330 to be firmly connected to the rear case to prevent the colored paint layer 320 and the reinforcing layer 330 from falling off the rear case 10 of the mobile terminal. In one embodiment, the material of the adhesive layer 310 also has a metal-philic property, so that the adhesive layer 310 can be adhered to the metal part of the mobile terminal rear case 10 to form a more tight connection between the adhesive layer 310 and the mobile terminal rear case 10. In an embodiment, the thickness of the adhesive layer 310 is 3 to 9 micrometers, which facilitates the stable connection between the adhesive layer 310 and the partition strip 200 of the rear case 10 of the mobile terminal when the thickness of the adhesive layer 310 is within the above range, and facilitates the stable connection between the adhesive layer 310 and the colored paint layer 320. In an embodiment, the thickness of the adhesive layer 310 is 7.5 to 8.5 microns, and when the thickness of the adhesive layer 310 is within this range, the adhesive layer 310 can be stably connected with the partition bar 200 and the colored paint layer 320, and the thickness of the adhesive layer 310 does not need to be increased continuously, so as to save the material of the adhesive layer 310.
In one embodiment, the film carrier 400 is coated with the strengthening layer 330, the paint layer 320 and the adhesive layer 310 in sequence, and then the film 20 is prepared. In an embodiment, the decoration layer 300 includes a strengthening layer 330, a colored paint layer 320 and an adhesive layer 310, the thickness of the decoration layer 300 is 8 micrometers to 50 micrometers, when the thickness of the decoration layer 300 is within this range, it is beneficial for the decoration layer 300 and the partition strips 200 in the gaps to form a tight connection, the stability of the decoration layer 300 can be ensured, and the adverse effect of the too large thickness of the decoration layer 300 on the appearance of the mobile terminal rear case 10 can be avoided. In one embodiment, the thickness of the adhesive layer 310 can be 8 microns, the thickness of the color paint layer 320 can be 8 microns, the thickness of the reinforcing layer 330 can be 8 microns, and the thickness of the decorative layer 300 after the adhesive layer 310, the color paint layer 320 and the reinforcing layer 330 are stacked and cured in sequence is approximately 24 microns. The decorative layer 300 having the above-described configuration can be stably connected to the partition bars 200 in the slits, ensure the hardness and strength of the decorative layer 300, and achieve a color difference value between the decorative layer 300 and the outer surface 110 of the case 100 within a predetermined range, so that the slits and the outer surface 110 of the case 100 exhibit good integrity.
It is understood that the above step S110 may be omitted. That is, the reinforcing layer 330 may be omitted from the decorative layer 300, and the function of the decorative layer 300 is not affected by the omission of the reinforcing layer 330. In other embodiments, a material for increasing the strength and hardness of the colored paint layer 320 may be added to the material of the colored paint layer 320, so that the colored paint layer 320 has sufficient strength and hardness.
Step S200, a second receiving groove is formed in the outer surface 110, an extending direction of the second receiving groove is the same as an extending direction of the first receiving groove, the first receiving groove is communicated with the second receiving groove, and the first receiving groove is used for filling the partition bar 200.
Specifically, in an embodiment, the width of the decoration layer 300 matches the width of the second receiving groove, the decoration layer 300 is located in the second receiving groove, and the surface of the decoration layer 300 close to the outer surface 110 of the casing 100 is flush with the outer surface 110. By processing the second receiving groove on the housing 100 of the rear housing, the second receiving groove and the first receiving groove are both part of the gap, and the decoration layer 300 can be disposed in the second receiving groove, which is favorable for aligning the decoration layer 300 with the gap, so as to be favorable for processing the decoration layer 300 and the rear housing 10 of the mobile terminal. On the other hand, by providing the second receiving groove, the surface of the reinforcing layer 330 or the surface of the colored paint layer 320 is easily aligned with the outer surface 110 of the housing 100, so that the projection generated on the mobile terminal rear case 10 can be prevented from affecting the reflection of light, and the integrity of the appearance of the mobile terminal rear case 10 can be ensured. It can be understood that the depth of the second receiving groove can be adaptively adjusted according to the thickness of the decoration layer 300. Further, since the decoration layer 300 is disposed in the second receiving groove, when the decoration layer 300 fills the second receiving groove, the groove wall of the second receiving groove can protect the decoration layer 300 well. The thickness of the decoration layer 300 can be very small, and it is only necessary to ensure that the color difference Δ E between the color of the decoration layer 300 covered above the partition bar 200 and the color of the outer surface 110 of the mobile terminal rear case 10 is in the range of 0 to 2.5. It is understood that step S200 may also be performed before preparing the adhesive film 20.
It is understood that step S200 may be omitted. In the embodiment omitting step S200, the shape of the film 20 matches the shape of the outer surface 110, the decoration layer 300 covers both the gap and the outer surface 110, and the decoration layer 300 is fixedly connected to the housing 100. Specifically, in an embodiment, the area of the decoration layer 300 is approximately equal to the area of the outer surface 110 of the casing 100, the decoration layer 300 is completely covered on the outer surface 110 of the mobile terminal rear case 10 through the adhesive layer 310, and after the decoration layer 300 is fixedly connected with the casing 100, the entire outer surface 110 of the mobile terminal rear case 10 is in the color of the colored paint layer 320 covered above the outer surface 110, so that the appearance of the mobile terminal rear case 10 can be nearly integrated, and the gap at the connection position of the gap and the casing 100 can be also shielded.
In step S300, the adhesive film 20 is adhered to one side of the partition strip 200 of the rear case 10 of the mobile terminal, which is close to the outer surface 110 of the case 100, so that the decoration layer 300 is tightly connected with the case 100.
Specifically, during use, it is necessary to face the adhesive layer 310 of the decoration layer 300 to the outer surface 110 of the case 100 and attach the adhesive film 20 above the partition strip 200 in the gap so that the adhesive layer 310 is tightly attached to the case 100. It is understood that, during the use of the sticker 20, it is necessary to allow the colored paint layer 320 of the decorative layer 300 to completely cover the surface of the partition strip 200 to prevent the partition strip 200 from being exposed, resulting in color difference between the partition strip 200 and the metal portion of the mobile terminal rear case 10. Since the outer surface 110 of the case 100 is curved, it is necessary to apply an external force to deform the adhesive sheet 20 and then to tightly connect the adhesive sheet with the outer surface 110, and to prevent air from remaining between the adhesive layer 310 and the surface of the partition strip 200, or even to prevent air bubbles from occurring. After the adhesive film 20 is attached to the partition bar 200 of the rear case 10 of the mobile terminal, the surface of the adhesive film 20 may be irradiated with a suitable temperature, for example, infrared rays, to enable the adhesive film 20 to be softened so as to be closely attached to the partition bar 200 and smoothly discharge air between the adhesive film 20 and the partition bar 200.
Step S400, the film carrier 400 is torn off.
The film 20 is tightly attached to the partition strip 200, so that after the adhesive layer 310 of the decorative layer 300 is tightly connected to the surface of the partition strip 200, the film carrier 400 of the film 20 can be torn off, and the colored paint layer 320 or the strengthening layer 330 of the decorative layer 300 is exposed to the environment. After tearing off membrane carrier 400, the surface of partition strip 200 in the antenna groove is covered by decorative layer 300, the color of colored paint layer 320 after covering to the top of partition strip 200 appears, because the range of the color difference value delta E between the color of colored paint layer 320 after covering to the top of partition strip 200 and the color of outer surface 110 of casing 100 is in the range of 0 ~ 2.5, consequently, the outer surface of whole mobile terminal backshell 10 can be made to be nearly integrated, make the appearance of mobile terminal backshell 10 more pleasing to the eye, succinct.
Referring to fig. 8, in an embodiment, a mobile terminal is further provided, where the mobile terminal includes a screen assembly 30 and a mobile terminal rear case 10, and the mobile terminal rear case 10 is fixedly connected with the screen assembly 30. The partition strip 200 is disposed in the gap of the rear case 10 of the mobile terminal, and in an embodiment, the partition strip 200 is made of plastic. A decorative layer 300 is disposed on one side of the partition strip 200 close to the outer surface 110 of the housing 100, and a color difference value Δ E between a color formed by the reflected light above the partition strip 200 covered by the decorative layer 300 and a color of the outer surface 110 of the housing 100 of the rear case 10 of the mobile terminal is in a range of 0 to 2.5. Therefore, the appearance of the rear case 10 of the mobile terminal has excellent integrity, and the appearance of the mobile terminal is more beautiful and concise.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. A mobile terminal backshell, comprising:
the shell is made of metal and provided with an outer surface and an inner surface which are oppositely arranged, and a gap is formed in the shell and penetrates through the outer surface and the inner surface;
the partition strip is made of an insulating material, is embedded in the gap and is fixedly connected with the shell; and
the decorative layer covers one side, close to the outer surface, of the partition strip and is fixedly connected with the shell; the decorative layer has light transmittance, and the color difference value delta E between the color formed by the partition strip covered by the decorative layer and the color of the outer surface ranges from 0 to 2.5; the decorative layer comprises a strengthening layer made of UV curing adhesive materials, and the strengthening layer is arranged on one side close to the outer surface and is transparent;
the gap comprises a first accommodating groove close to the inner surface and a second accommodating groove close to the outer surface, and the first accommodating groove is communicated with the second accommodating groove; the partition strip is positioned in the first accommodating groove, the decorative layer is positioned in the second accommodating groove, and the surface of the decorative layer close to the outer surface is flush with the outer surface; the width of the decorative layer is larger than that of the partition strips, and the reinforcing layer is connected to two opposite side walls of the second accommodating groove.
2. The rear case of mobile terminal according to claim 1, wherein the partition bar is made of plastic; the decorative layer comprises an adhesive layer and a colored paint layer, the adhesive layer is adhered to one side, close to the outer surface, of the partition strip, the colored paint layer is adhered to one side, close to the outer surface, of the adhesive layer, the reinforcing layer is adhered to the colored paint layer, and the range of the color difference value delta E between the color of the partition strip covered by the colored paint layer and the color of the outer surface is 0-2.5.
3. The mobile terminal rear cover according to claim 2, wherein the thickness of the decoration layer is 8-50 microns, the thickness of the bonding layer is 3-9 microns, and the thickness of the color paint layer is 3-9 microns.
4. The mobile terminal rear cover according to claim 2, wherein the adhesive layer has a thickness of 7.5 to 8.5 micrometers, and the color paint layer has a thickness of 7.5 to 8.5 micrometers.
5. A method for manufacturing a rear shell of a mobile terminal is characterized by comprising the following steps:
processing a decorative layer on a film carrier to prepare a film, wherein the decorative layer comprises a reinforced layer made of a UV curing adhesive material, and the reinforced layer is connected with the surface of the film carrier;
a second accommodating groove is formed in the outer surface of the shell and is communicated with the first accommodating groove of the shell, the extending direction of the second accommodating groove is the same as that of the first accommodating groove, and the first accommodating groove is used for filling the partition strips; the width of the decorative layer is larger than that of the partition strip;
adhering the adhesive film to one side, close to the outer surface of the rear shell of the mobile terminal, of the partition strip so that the decorative layer is fixedly connected with the shell, wherein the width of the decorative layer is matched with the width of the second accommodating groove, the decorative layer is located in the second accommodating groove, and the surface, close to the outer surface, of the decorative layer is flush with the outer surface; the decorative layer has light transmittance, and the color difference value delta E between the color formed by the partition strip and the decorative layer after being covered by the decorative layer and the color of the outer surface is 0-2.5;
heating the adhesive film to soften the adhesive film and tightly connect the adhesive film with the partition strip; and
tearing off the film carrier.
6. The method for manufacturing a rear cover of a mobile terminal according to claim 5, wherein the step of processing a decorative layer on the film carrier to prepare the adhesive film comprises:
coating a colored paint layer on the film carrier, wherein the thickness of the colored paint layer is 3-9 micrometers; and
and coating an adhesive layer on the surface of the colored paint layer, which is far away from the film carrier, wherein the thickness of the adhesive layer is 3-9 micrometers.
7. The method for manufacturing a rear case of a mobile terminal according to claim 6, wherein the step of coating a paint layer on the surface of the film carrier further comprises:
and coating a strengthening layer on the surface of the film carrier, wherein the strengthening layer is positioned between the colored paint layer and the film carrier, and the thickness of the strengthening layer is 3-9 micrometers.
8. A mobile terminal, characterized in that, it comprises a screen component and a mobile terminal back shell as claimed in any one of claims 1 to 4, the mobile terminal back shell is fixedly connected with the screen component.
9. A mobile terminal, characterized in that, it comprises a screen component and a mobile terminal rear shell manufactured by the method for manufacturing the mobile terminal rear shell according to any claim 5-7, wherein the mobile terminal rear shell is fixedly connected with the screen component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710590510.2A CN107231772B (en) | 2017-07-19 | 2017-07-19 | Mobile terminal rear shell, manufacturing method of mobile terminal rear shell and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710590510.2A CN107231772B (en) | 2017-07-19 | 2017-07-19 | Mobile terminal rear shell, manufacturing method of mobile terminal rear shell and mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107231772A CN107231772A (en) | 2017-10-03 |
| CN107231772B true CN107231772B (en) | 2020-07-21 |
Family
ID=59957524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710590510.2A Active CN107231772B (en) | 2017-07-19 | 2017-07-19 | Mobile terminal rear shell, manufacturing method of mobile terminal rear shell and mobile terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107231772B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110519424A (en) * | 2019-08-20 | 2019-11-29 | Oppo广东移动通信有限公司 | The shell and electronic equipment of electronic equipment |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3842687B2 (en) * | 2002-03-28 | 2006-11-08 | 株式会社東芝 | Portable wireless devices |
| US6818291B2 (en) * | 2002-08-17 | 2004-11-16 | 3M Innovative Properties Company | Durable transparent EMI shielding film |
| CN2656158Y (en) * | 2003-11-27 | 2004-11-17 | 惠州市华阳化工有限公司 | Shell decorative piece |
| CN101888751A (en) * | 2009-05-11 | 2010-11-17 | 深圳富泰宏精密工业有限公司 | Electronic device case with antenna function and manufacturing method thereof |
| CN101941314A (en) * | 2009-07-08 | 2011-01-12 | 深圳富泰宏精密工业有限公司 | Manufacturing method of metalline shell and shell manufactured by same |
| TW201504064A (en) * | 2013-07-16 | 2015-02-01 | Fong Shin Technology Co Ltd | Membrane and use method thereof |
| CN105322290A (en) * | 2014-05-30 | 2016-02-10 | 广州光宝移动电子部件有限公司 | Antenna structure and wireless device |
| CN106211684B (en) * | 2015-05-08 | 2019-07-12 | 深圳富泰宏精密工业有限公司 | Shell, using electronic device of the shell and preparation method thereof |
| CN105517389A (en) * | 2016-01-08 | 2016-04-20 | 广东欧珀移动通信有限公司 | Mobile terminal housing and processing method thereof |
| CN106132149B (en) * | 2016-08-25 | 2017-08-25 | 广东欧珀移动通信有限公司 | Electronic equipment casing preparation method and electronic equipment |
| CN106572212B (en) * | 2016-09-08 | 2020-04-14 | Oppo广东移动通信有限公司 | Shell, shell manufacturing method and mobile terminal |
-
2017
- 2017-07-19 CN CN201710590510.2A patent/CN107231772B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107231772A (en) | 2017-10-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11737229B2 (en) | Offset control for assembling an electronic device housing | |
| CN107069179B (en) | Shell, shell manufacturing method, antenna device and mobile terminal | |
| US8300395B2 (en) | Housing and electronic device using same | |
| US20130329173A1 (en) | Liquid crystal protection cover for portable terminal and method of manufacturing transmission protection layer forming the same | |
| WO2004098953A3 (en) | Vehicular rearview mirror elements and assemblies incorporating these elements | |
| CN108340540A (en) | The method of manufacturing device shell and crust of the device including transparent lens | |
| CN107231772B (en) | Mobile terminal rear shell, manufacturing method of mobile terminal rear shell and mobile terminal | |
| CN107633769B (en) | Terminal, display screen assembly and assembly for protecting display screen of terminal | |
| US20220194065A1 (en) | Decorative Functional Component Having a Transparent Partial Surface | |
| US10015297B2 (en) | Display cover retention features for a portable electronic device | |
| US9227348B2 (en) | Method for forming a glass-plastic composite | |
| CN210576695U (en) | Panel device with bonding structure | |
| CN206431594U (en) | Display screen cover plate, arc-shaped display screen and terminal | |
| CN109274786A (en) | Appearance member, cell phone rear cover and battery component | |
| CN211127897U (en) | Mobile terminal protective sleeve | |
| CN206963235U (en) | Mobile terminal and mobile terminal rear shell | |
| CN110650601B (en) | Cover plate assembly, manufacturing method thereof and electronic equipment | |
| CN204801674U (en) | Bordure subassembly and door window | |
| KR101330619B1 (en) | Molding with film antenna for portable device and manufacturing method for the same | |
| JP2004004277A (en) | Electrochromic antidazzle mirror and method for assembling electrochromic antidazzle mirror | |
| CN115246256A (en) | Shell, preparation method thereof and electronic equipment | |
| CN220793382U (en) | Wire controller and air conditioning system | |
| US20010025852A1 (en) | Ornamental parts and manufacturing method thereof | |
| CN114390815B (en) | Shell, shell preparation method and electronic equipment | |
| KR102468599B1 (en) | Process for manufacturing assembly using spraying process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Applicant after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Applicant before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |