CN108668484A - The manufacturing method of shell, electronic device and shell - Google Patents
The manufacturing method of shell, electronic device and shell Download PDFInfo
- Publication number
- CN108668484A CN108668484A CN201810545732.7A CN201810545732A CN108668484A CN 108668484 A CN108668484 A CN 108668484A CN 201810545732 A CN201810545732 A CN 201810545732A CN 108668484 A CN108668484 A CN 108668484A
- Authority
- CN
- China
- Prior art keywords
- side portion
- flat part
- section
- corner
- shell
- 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.)
- Pending
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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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/18—Telephone sets specially adapted for use in ships, mines, or other places exposed to adverse environment
Abstract
This application involves the manufacturing methods of a kind of shell, electronic device and shell, the shell includes glass body and corner, the glass body includes the side portion of flat part and each edge bending extension by flat part, forms gap between two neighboring side portion, the gap is filled in the corner.Above-mentioned shell, there are gaps between two neighboring side portion, avoid the glass at hot bending hour angle and are extruded, and fill gap using the corner in addition made, realize the globality of shell, and increase the drop resistant ability of shell.
Description
Technical field
This application involves field of electronic devices, more particularly to the manufacturing method of shell, electronic device and shell.
Background technology
When the glass shell of electronic device is manufactured using glass bending method, the glass of four corners is easy to be extruded,
It is easy to cause cracking during use.
Invention content
One embodiment of the application provides the manufacturing method of a kind of shell, electronic device and shell, to solve glass shell
The problem of being extruded when four corners hot bending and being easy cracking.
A kind of shell, including glass body and corner, the glass body include flat part and each side by flat part
Edge bends the side portion extended, and gap is formed between two neighboring side portion, and the gap is filled in the corner.
Above-mentioned shell, there are gaps between two neighboring side portion, avoid the glass at hot bending hour angle and are extruded, and use
In addition the corner filling gap made, realizes the globality of shell, and increase the drop resistant ability of shell.
Further include interconnecting piece in one of the embodiments, the interconnecting piece is arranged in both flat part and side portion
On at least one inner surface, and connect two adjacent corners.Interconnecting piece increases the binding face of corner and shell inner surface
Product so that corner is bonding with shell closer, and interconnecting piece enhances the drop resistant ability of shell.
Further include any one following scheme in one of the embodiments,：
The section of the interconnecting piece is "-" type, is fitted on flat part or the inner surface of side portion；
The section of the interconnecting piece is L-shaped, while being fitted on flat part and the inner surface of side portion；
The section of the interconnecting piece is U-shaped, while being fitted on flat part and the inner surface of side portion, and is full of flat part
Inner surface.
Each angle of the flat part forms notch in one of the embodiments, and has the first section and the second section,
Each notch is connected to a corresponding gap, the end face of the first section and a side portion, the second section and another
The gap and notch are filled in the end face of side portion, the corner simultaneously.
Further include any one following scheme in one of the embodiments,：
Between flat part and side portion vertically or in obtuse angle, it and seamlessly transits；
It is vertical or in obtuse angle between first section and the second section；
Further include being arranged at least one inner surface of both flat part and side portion, and connect two adjacent angles
The interconnecting piece in portion, the corner and interconnecting piece are integrally formed using transparent high molecular material.
The corner includes the fanning strip and arc panel being connected with each other in one of the embodiments, and the fanning strip is filled out
The notch is filled, two side portions that the arc panel is connected smoothly adjacent simultaneously fill the gap.
The fanning strip includes first side, second side, the inner surface and the outer surface, institute in one of the embodiments,
It states first side to be bonded with the first section, the second side is bonded with the second section, the outer surface of the fanning strip and tablet
The flush with outer surface in portion.
The arc panel includes third side, the 4th side, intrados and extrados, institute in one of the embodiments,
It states third side to be bonded with the end face of a side portion, the 4th side is bonded with the end face of another side portion, and arc
It is seamlessly transitted between the extrados of plate and the outer surface of side portion.
A kind of electronic device, the electronic device include the shell.
A kind of manufacturing method of shell, includes the following steps：
Step a provides plate glass, and cuts off each angle of plate glass；
Step b, each edge of hot bending plate glass, obtains the glass body with flat part and side portion, sides adjacent
Edge has gap；
Step c fills the gap using transparent high molecular material and forms corner.
The manufacturing method of above-mentioned shell first cuts out the four corners of plate glass, and when hot bending avoids the glass at angle
It is extruded, gap is filled using the corner in addition made, realizes the globality of shell, and increase the drop resistant ability of shell.
The first section and second being connected with each other is formed when each angle of plate glass is removed in one of the embodiments,
Section, when each edge of hot bending plate glass, the junction interval of hot bending line and the first section, the second section is arranged.
Glass body is put into mold in one of the embodiments, and the transparent polymer material for injecting molten state is filled out
The gap is filled to form corner, while also covering the inner surface of flat part and/or side portion to form interconnecting piece.
In one of the embodiments, by the injection molding in a mold of transparent high molecular material, obtain and glass body
The corner of cooperation and the interconnecting piece being connected between adjacent corners, corner and interconnecting piece are adhered to by dispensing or hot pressing mode
In glass body.
Further include the steps that polishing and overlay coating processing behind formation corner in one of the embodiments,.
Description of the drawings
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of application for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the schematic three dimensional views for the shell that an embodiment provides；
Fig. 2 is the portions the A enlarged diagram of shell shown in Fig. 1, wherein the edge connection of interconnecting piece and corner；
Fig. 3 is the portions the A enlarged diagram of shell shown in Fig. 1, wherein the inner surface connection of interconnecting piece and corner；
Fig. 4 is the back graphics of shell shown in Fig. 1；
Fig. 5 is the flat part of shell and the schematic diagram before side portion hot bending shown in Fig. 1；
Fig. 6 is the flat part of shell and the 3-D view of side portion shown in Fig. 1；
Fig. 7 is the portions the B enlarged diagram of Fig. 6；
Fig. 8 is the corner of shell and interconnecting piece schematic diagram shown in Fig. 1；
Fig. 9 is the portions the C enlarged diagram of Fig. 8, wherein interconnecting piece and the edge in corner connect, and the section of interconnecting piece is L
Shape；
Figure 10 is the enlarged diagram of the portions the C structure of corresponding diagram 8 in another embodiment, wherein the arc of interconnecting piece and corner
The edge of shape plate connects, and the section of interconnecting piece is "-" type；
Figure 11 is the enlarged diagram of the portions the C structure of corresponding diagram 8 in another embodiment, wherein the fan of interconnecting piece and corner
The edge of shape plate connects, and the section of interconnecting piece is "-" type；
Figure 12 is the schematic three dimensional views at another visual angle of structure shown in Fig. 8；
Figure 13 is the portions the D enlarged diagram of Figure 12；
Figure 14 is the electronic device schematic rear view that an embodiment provides；
Figure 15 is the I-I of electronic device shown in Figure 14 to sectional view.
Specific implementation mode
For the ease of understanding the application, the application is described more fully below with reference to relevant drawings.In attached drawing
Give the preferred embodiment of the application.But the application can realize in many different forms, however it is not limited to herein
Described embodiment.Keep the understanding to present disclosure more saturating on the contrary, purpose of providing these embodiments is
It is thorough comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement are for illustrative purposes only.
Unless otherwise defined, all of technologies and scientific terms used here by the article and belong to the technical field of the application
The normally understood meaning of technical staff is identical.The term used in the description of the present application is intended merely to description tool herein
The purpose of the embodiment of body, it is not intended that in limitation the application.Term " and or " used herein includes one or more phases
Any and all combinations of the Listed Items of pass.
As " electronic device " as used herein include, but are not limited to be configured to via Wireline connection (such as via
Public Switched Telephone Network (PSTN), digital subscriber line (DSL), digital cable, Direct cable connection and/or another number
According to connection/network) and/or via (for example, for the number of cellular network, WLAN (WLAN), such as DVB-H networks
TV network, satellite network, AM-FM broadcasting transmitter and/or another electronic device) wireless interface reception/transmission communication
The device of signal.The example of electronic device includes, but are not limited to satellite or cellular phone；Can with combination cellular radio telephone with
PCS Personal Communications System (PCS) terminal of data processing, fax and communication ability；May include radio telephone, paging
Machine, the Internet/intranet access, Web browser, memo pad, calendar and/or global positioning system (GPS) receiver
PDA；And conventional laptop and/or palmtop receiver or other electronic devices including radiotelephone transceiver.
As shown in Figure 1 and Figure 4, one embodiment of the application specifically describes shell by taking handset shell as an example.The present embodiment
In, handset shell includes rectangular flat part 100, side portion 200 and corner 300.Flat part 100, side portion 200 material be
The material of glass, corner 300 is transparent high molecular material.Side portion 200 is disposed around the surrounding of flat part 100.It is two neighboring
There are gaps 410 (to show in the figure 7) between side portion 200, and the glass of the quadrangle of flat part 100 is removed, and there are notches
400 (as shown in Figure 6).Fill gap 410 and notch 400 in the corner 300.
Because for four corners by severe crush, intensity is relatively low after glass bending, cracking, the present embodiment are easy to cause during use
The glass cut using quadrangle carries out hot bending, avoids the case where glass of quadrangle is extruded.Fill gap in the corner 300
410 and notch 400 so that flat part 100 is the complete tablet that quadrangle is added, and so that side portion 200 is gap 410
It is added continuous side.The corner 300 is transparent high molecular material, can be makrolon (PC plastic), acrylic
Or epoxy resin etc. so that the transparency in corner 300 is similar to the transparency of glass shell, fill up the gap 400 and gap 410
The intensity for also increasing shell simultaneously, makes shell be not easy to be broken into pieces.
As shown in Figures 5 to 7, in one embodiment, it first by the glass-cutting of four corners before glass bending, obtains such as figure
Structure shown in 5 obtains structure as shown in Figure 6 along 130 hot bending of hot bending line, it is vertical between side portion 200 and flat part 100 or
In obtuse angle, it and seamlessly transits.Fig. 7 is the portions the B enlarged diagram of structure shown in Fig. 6.As shown in Figure 6 and Figure 7, flat part 100
Quadrangle is cut, and notch 400 is formed, there are gap 410 between sides adjacent edge 200, each notch 400 with it is corresponding
One gap 410 is connected to.By taking flat part 100 one of is cut angle as an example, including the first section 110 and the second section
120.First section 110 and the second section 120 can be vertically or in obtuse angle or between the first section 110 and the second sections 120
It can seamlessly transit.First section 110 is concordant with the end face of side edge 200, the second section 120 and another side portion 200
End face is concordant, and the gap 410 is formed between both sides edge 200.
As shown in Figure 2 and Figure 4, in one embodiment, the corner 300 includes the fanning strip 310 and arc being connected with each other
Plate 320, the filling of the fanning strip 310 are located at the notch 400 of the quadrangle of flat part 100, and the arc panel 320 is connected smoothly
Adjacent two side portions 200 simultaneously fill the gap 410.As shown in Figure 2 and Figure 4, the thickness in corner 300 is equal to heat-bending glass
Thickness, the inner surface of fanning strip 310 is concordant with the inner surface of flat part 100, the outer surface of fanning strip 310 and flat part 100
Flush with outer surface；The extrados of arc panel 320 is parallel with intrados, and respectively with 200 outer surface of side portion and inner surface it
Between seamlessly transit.
As shown in Figure 10, in one embodiment, the fanning strip 310 includes first side 311, second side 312, interior table
Face and outer surface.First side 311 and second side 312 vertically or in obtuse angle, or in other embodiments, first side
It is seamlessly transitted between 311 and second side 312, without specific boundary, a curved surface can be considered as.Fig. 1 is out of shell
The schematic diagram of shell is observed on surface, and Fig. 4 is the schematic diagram of the shell from the outer surface of shell.As shown in Figure 1 and Figure 4, corner
300 in the assembled condition, and first side 311 is bonded with the first section 110, and second side 312 is bonded with the second section 120, fan
The inner surface of shape plate 310, outer surface respectively with the inner surface of flat part 100, flush with outer surface.As shown in Figure 10, the arc
Plate 320 is located in the arcuate edge of fanning strip 310, and the fan-shaped radian contract of the radian of the arc panel 320 and fanning strip 310
It closes.Arc panel 320 includes third side 321, the 4th side 322, intrados and extrados.Shown in Fig. 1 and Fig. 4, corner 300 exists
Under assembled state, the third side 321 is bonded with the end face of side portion 200, the 4th side 322 and another side portion
200 end face fitting, and seamlessly transitted between the extrados of arc panel 320 and the outer surface of side portion 200.
As illustrated in figures 1 and 8, in one embodiment, interconnecting piece 500 is equipped between adjacent corner 300.The interconnecting piece
500 material is identical as corner 300, is integrally formed with corner 300.The interconnecting piece 500 is bar, is connected to adjacent
Between corner 300.As shown in Fig. 2, interconnecting piece 500 is connect with the edge at the edge of fanning strip 310 and arc panel 320.Other
In embodiment, as shown in figure 3, it has been each filled with interconnecting piece 500 on 320 inner surface of the fanning strip 310 in corner 300 and arc panel, and
Not only only edge as shown in Figure 2 is connect with interconnecting piece 500.Fig. 8 is that interconnecting piece 500 shows with what corner 300 was connect
It is intended to, Fig. 9 is the enlarged diagram of the portions C structure in Fig. 8.As shown in Figure 2 and Figure 9, the section of interconnecting piece 500 is L-shaped, a part
It is fitted on the inner surface of flat part 100, another part is fitted on the inner surface of side portion 200, and interconnecting piece 500 is positioned at flat
Part on the inner surface of plate portion 100 is covered in the portion inner surface of the portion inner surface and flat part 100 of fanning strip 310 simultaneously
On.As shown in Figure 10, in another embodiment, the section of interconnecting piece 500 is line-styled, is fitted in the interior table of side portion 200
On face.As shown in figure 11, in another embodiment, the section of interconnecting piece 500 is line-styled, is fitted in the interior of flat part 100
On surface.In other embodiments, the section of interconnecting piece 500 is U-shaped, is fitted in flat part 100 and the interior table of side portion 200
On face, and interconnecting piece 500 is bonded with all inner surfaces of shell.Interconnecting piece 500 and corner 300 are as a whole, and flat
Contact area between plate portion 100 and side portion 200 is larger, is connected firmly.
As shown in Figure 14 and Figure 15, in one embodiment, the application also provides a kind of electronic device, the electronic device
Rear shell is the shell, and the shell is directly connect with display screen component 600, the shell substitution back shroud and middle frame structure,
So that the structure of electronic device is simple and is easily assembled.
In one embodiment, a kind of manufacturing method of shell, includes the following steps：
Step a provides plate glass, and cuts off each angle of plate glass；
Step b, each edge of hot bending plate glass, obtains the glass body with flat part 100 and side portion 200,
There is gap 410 between sides adjacent edge 200；
Step c fills the gap 410 using transparent high molecular material and forms corner 300.
As shown in figure 5, in one embodiment, the step a includes determining heat according to shell dimension on plate glass base
Curved line 130, the hot bending line 130 are rectangular, and the size of the part within hot bending line 130 is identical as the size of flat part 100, heat
Part other than curved line 130 can then be formed to side portion 200.Plate glass is subjected to CNC processing, cuts off plate glass base
Quadrangle part, and at least partly glass in hot bending line 130 is removed, i.e., the corner of hot bending line 130 is removed, and forms phase
The first section 110 and the second section 120 to connect so that the quadrangle of the flat part 100 of the shell obtained after hot bending forms institute
Notch 400 is stated, the gap 410 is formed between adjacent side portion 200.
As shown in fig. 6, in one embodiment, the step b includes that will cut off the plate glass of quadrangle according to hot bending line
130 carry out hot bending, obtain the glass body of jagged 400 and gap 410.Glass body includes the flat part that quadrangle is cut
100 and four mutual discontinuous side portions 200.The side portion 200 perpendicular to flat part 100 or side portion 200 with
Between flat part 100 in obtuse angle.In one embodiment, side portion 200 can replace center directly with the display screen component of mobile phone
600 combine so that Mobile phone housing structure is simple and is easily assembled.
As shown in Figure 1 and Figure 4, in one embodiment, the step c includes making mold, including mutually matched upper mold
And lower die, up and down molding after, the shape of the cavity in mold is identical as the shape of handset shell, and at 200 cooperation of side portion
The thickness of cavity be slightly larger than the thickness of side portion 200, and/or with the thickness of the cavity at 100 cooperation of flat part slightly larger than flat
The thickness of plate portion 100 so that by being fitted in the inner surface of side portion 200 and/or flat part 100 between adjacent corner 300
On interconnecting piece 500 connect.The glass body obtained in step b is put into mold, molds, injects the transparent high score of molten state
Sub- material so that the inner surface and/or flat part of corner location and side portion 200 of the high molecular material full of glass body
100 inner surface obtains notch 400 and gap 410 and is filled and the interior table of side portion 200 and/or flat part 100 by corner 300
Paste the shell of interconnecting piece 500 in face.
As shown in Figure 1 and Figure 4, in another embodiment, the step c includes, and makes mold, including it is mutually matched on
Mould and lower die are equipped with four corners cavity, shape and mutual distance and handset shell up and down after molding in mold
Corner is identical, is connected between adjacent corner cavity.By the injection molding in the mold of molding of transparent high molecular material, obtain
The corner 300 coordinated with notch 400 and gap 410 and the interconnecting piece 500 being connected between adjacent corners 300.By 300 He of corner
Interconnecting piece 500 is adhered to by dispensing or hot pressing mode on the shell in quadrangle jagged 400 and gap 410 so that corner 300 is filled out
Notch 400 and gap 410 are filled, interconnecting piece 500 is fitted on flat part 100 and/or the inner surface of side portion 200.
In one embodiment, the shell that step c is obtained deflashing, cutting and polishing is carried out to be of the required size
Shell.As needed, the inner surface of shell is subjected to overlay coating processing, is made and meets what color, size and feel required
Handset shell.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Cannot the limitation to claim therefore be interpreted as.It should be pointed out that coming for those of ordinary skill in the art
It says, under the premise of not departing from the application design, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the protection domain of the application patent should be determined by the appended claims.
Claims (14)
1. a kind of shell, which is characterized in that including glass body and corner (300), the glass body includes flat part (100)
The side portion (200) extended is bent with by each edge of flat part (100), between being formed between two neighboring side portion (200)
Gap (410), the corner (300) fill the gap (410).
2. shell according to claim 1, which is characterized in that further include interconnecting piece (500), the interconnecting piece (500) sets
It sets on flat part (100) and at least one inner surface of side portion (200) the two, and connects two adjacent corners
(300)。
3. shell according to claim 2, which is characterized in that further include any one following scheme：
The section of the interconnecting piece (500) is "-" type, is fitted on flat part (100) or the inner surface of side portion (200)；
The section of the interconnecting piece (500) is L-shaped, while being fitted on flat part (100) and the inner surface of side portion (200)；
The section of the interconnecting piece (500) is U-shaped, while being fitted on flat part (100) and the inner surface of side portion (200),
And the inner surface full of flat part (100).
4. shell according to claim 1, which is characterized in that each angle of the flat part (100) forms notch (400),
And there are the first section (110) and the second section (120), each notch (400) is connected to a corresponding gap (410), and
The end face of first section (110) and a side portion (200), the end of the second section (120) and another side portion (200)
Face flushes, and the corner (300) while filling the gap (410) and notch (400).
5. shell according to claim 4, which is characterized in that further include any one following scheme：
Between flat part (100) and side portion (200) vertically or in obtuse angle, it and seamlessly transits；
It is vertical or in obtuse angle between first section (110) and the second section (120)；
Further include being arranged on flat part (100) and at least one inner surface of side portion (200) the two, and connect adjacent
The interconnecting piece (500) of two corners (300), the corner (300) and interconnecting piece (500) are using transparent high molecular material one
Molding.
6. shell according to claim 4, which is characterized in that the corner (300) includes the fanning strip being connected with each other
(310) and arc panel (320), the fanning strip (310) fill the notch (400), arc panel (320) company of seamlessly transitting
It connects the side portion (200) of adjacent two and fills the gap (410).
7. shell according to claim 6, which is characterized in that the fanning strip (310) includes first side (311),
Two side faces (312), the inner surface and the outer surface, the first side (311) are bonded with the first section (110), the second side
(312) it is bonded with the second section (120), the flush with outer surface of the outer surface and flat part (100) of the fanning strip (310).
8. shell according to claim 6, which is characterized in that the arc panel (320) includes third side (321),
Four sides (322), intrados and extrados, the third side (321) is bonded with the end face of a side portion (200), described
4th side (322) is bonded with the end face of another side portion (200), and the extrados of arc panel (320) and side portion (200)
Outer surface between seamlessly transit.
9. a kind of electronic device, which is characterized in that the electronic device includes the shell.
10. a kind of manufacturing method of shell, includes the following steps：
Step a provides plate glass, and cuts off each angle of plate glass；
Step b, each edge of hot bending plate glass obtain the glass body with flat part (100) and side portion (200),
There are gap (410) between sides adjacent edge (200)；
Step c fills the gap (410) using transparent high molecular material and forms corner (300).
11. the manufacturing method of shell according to claim 10, which is characterized in that shape when each angle of plate glass is removed
The first section (110) at interconnection and the second section (120), when each edge of hot bending plate glass, hot bending line (130)
It is arranged with the junction interval of the first section (110), the second section (120).
12. the manufacturing method of shell according to claim 10, which is characterized in that glass body is put into mold, and is noted
The transparent polymer material for entering molten state fills the gap (410) to form corner (300), while also covering flat part
(100) and/or the inner surface of side portion (200) is to form interconnecting piece (500).
13. the manufacturing method of shell according to claim 10, which is characterized in that by transparent high molecular material in mold
Middle injection molding obtains the corner (300) coordinated with glass body and the interconnecting piece being connected between adjacent corners (300)
(500), corner (300) and interconnecting piece (500) are adhered to by dispensing or hot pressing mode in glass body.
14. the manufacturing method of shell according to claim 10, which is characterized in that further include beating after formation corner (300)
The step of mill and overlay coating processing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810545732.7A CN108668484A (en) | 2018-05-25 | 2018-05-25 | The manufacturing method of shell, electronic device and shell |
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| CN201810545732.7A CN108668484A (en) | 2018-05-25 | 2018-05-25 | The manufacturing method of shell, electronic device and shell |
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| CN109761482A (en) * | 2019-03-26 | 2019-05-17 | 信利光电股份有限公司 | A kind of preparation method of 3D cover board |
| CN110744676A (en) * | 2019-10-25 | 2020-02-04 | 东莞信柏结构陶瓷股份有限公司 | 3D ceramic rear cover and preparation method thereof |
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