CN206312176U - Mobile terminal and its back shroud - Google Patents
Mobile terminal and its back shroud Download PDFInfo
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- CN206312176U CN206312176U CN201621373832.9U CN201621373832U CN206312176U CN 206312176 U CN206312176 U CN 206312176U CN 201621373832 U CN201621373832 U CN 201621373832U CN 206312176 U CN206312176 U CN 206312176U
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- back shroud
- mobile terminal
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- 238000005516 engineering process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
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- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
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- 238000000465 moulding Methods 0.000 description 2
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Abstract
The utility model is related to a kind of back shroud of mobile terminal, the first electrode layer and the second electrode lay set including cover layer, mutually insulated, first electrode layer includes multiple first electrodes, the second electrode lay includes multiple second electrodes, the projection of the first electrode and second electrode intersects to form the whole inner surface of electric capacity, the first electrode layer and the second electrode lay covering cover layer in intersection.The utility model further relates to a kind of mobile terminal.Mobile terminal that the utility model is provided and back shroud can make fingerprint recognition be not limited to the ad-hoc location in back shroud by the way that fingerprint recognition region to be expanded to the whole surface of cover layer, thus easily facilitate the use of fingerprint recognition.Simultaneously because fingerprint recognition region becomes big, also possibility can be provided for the multiple fingerprints of identification simultaneously.
Description
Technical field
The utility model is related to fingerprint identification technology field, more particularly to a kind of mobile end with fingerprint identification function
End and its back shroud.
Background technology
The fingerprint of human body, palmmprint are unique, and their complexity can provide enough features for individual identity
Identification.Finger print/palm print identification technology is the cheapest biometrics identification technology of current most ripe and price.Wherein, fingerprint is known
Other technology is widely used on the electronic equipments such as notebook computer, mobile phone.
The rough lines of finger surface skin is made up of the trench line between convex ridge line and convex ridge line, and fingerprint recognition is
Being uniqueness and stability feature using fingerprint lines realizes identification.Current fingerprint recognition mode mainly has image
Feature recognition, laser feature identification and capacitance sensing identification.Characteristics of image is recognized and laser feature identification is utilized respectively visible ray
Being taken the fingerprint with laser approach information and using algorithm carries out signature analysis, recognizes Different Individual.The two methods be required to as
The more complicated space structure such as CCD photoreceptors, laser generator, is unsuitable for lightening application.In contrast, capacitance sensing is known
It is not the fingerprint identification technology with bigger application potential.How by capacitance sensing fingerprint recognition application to mobile terminal, carry
The ease of use of the fingerprint recognition of mobile terminal high, is problem that industry is persistently studied.
Utility model content
The utility model aims to provide a kind of mobile terminal and its back shroud of the ease of use that can improve fingerprint recognition.
A kind of back shroud of mobile terminal, including cover layer, the first electrode layer and second for also being set including mutually insulated
Electrode layer, the first electrode layer includes multiple first electrodes, and the second electrode lay includes multiple second electrodes, described first
The projection of electrode and the second electrode intersects with intersection formation electric capacity, the first electrode layer and the second electrode
The whole inner surface of the layer covering cover layer.
Wherein in one embodiment, the cover layer is glass cover-plate, and decorative layer is set on the cover layer inner surface,
The first electrode layer and the second electrode lay are arranged on the decorative layer and cover the whole surface of the decorative layer.
Wherein in one embodiment, the first electrode layer and the second electrode lay are fixed on described by tack coat
On decorative layer.
Wherein in one embodiment, the decorative layer includes at least coating being formed on the cover layer inner surface
With at least ink layer being formed on an at least coating.
Wherein in one embodiment, also including flexible PCB, the first electrode layer and the second electrode lay shape
Into in the flexible PCB, the flexible PCB is fixed on the inner surface of the cover layer by tack coat.
Wherein in one embodiment, also including the first base material layer, the first gelatinous layer, the second substrate layer, the second gelatinous layer,
First tack coat and the second tack coat;
First gelatinous layer is formed in the surface of the first base material layer, first gelatinous layer away from described first
Groove is set on the surface of substrate layer, the first electrode layer is filled in the groove of first gelatinous layer, described first bonds
Layer connects the cover layer and the first base material layer;
Second gelatinous layer is formed in the surface of second substrate layer, second gelatinous layer away from described second
Groove is set on the surface of substrate layer, the second electrode lay is filled in the groove of second gelatinous layer, described second bonds
Layer connection second substrate layer and first gelatinous layer.
Wherein in one embodiment, also including at least one of following:The first base material layer and second base
The material of material layer is identical;First gelatinous layer is identical with the material of second gelatinous layer;The first electrode layer with it is described
The material of the second electrode lay is identical.
Wherein in one embodiment, also including the first gelatinous layer, tack coat, substrate layer and the second gelatinous layer, described
One gelatinous layer is formed in the inner surface of the cover layer, sets recessed on the surface away from the cover layer of first gelatinous layer
Groove, the first electrode layer is filled in the groove of first gelatinous layer, and second gelatinous layer is formed in the substrate layer
Surface, second gelatinous layer is filled in described away from groove, the second electrode lay is set on the surface of the substrate layer
In the groove of two gelatinous layers, the tack coat connects the substrate layer and first gelatinous layer.
Wherein in one embodiment, the line-spacing of adjacent two first electrode is 25.4 μm~254 μm, the first electrode
Line width is 1/10~9/10 with the ratio of the line-spacing of adjacent two first electrode;The line-spacing of adjacent two second electrode be 25.4 μm~
254 μm, the line width of the second electrode is 1/10~9/10 with the ratio of the line-spacing of adjacent two second electrode.
A kind of mobile terminal, including fingerprint control chip and back shroud, the back shroud are the above-mentioned bonnet of any one
Plate, the fingerprint control chip is electrically connected with the first electrode layer, the second electrode lay.
The mobile terminal and back shroud that the utility model is provided are expanded to the whole of cover layer by by fingerprint recognition region
Surface, can make fingerprint recognition be not limited to the ad-hoc location in back shroud, thus easily facilitate the use of fingerprint recognition.While by
Become big in fingerprint recognition region, can also provide possibility for the multiple fingerprints of identification simultaneously.
Brief description of the drawings
Fig. 1 is the cross section structure schematic diagram of the back shroud of the mobile terminal of the utility model first embodiment.
Fig. 2 is the first conductive layer and the dimensional decomposition structure of the second conductive layer in the back shroud of mobile terminal shown in Fig. 1
Schematic diagram.
Fig. 3 is the cross section structure schematic diagram of the back shroud of the mobile terminal of the utility model second embodiment.
Fig. 4 is the cross section structure schematic diagram of the back shroud of the mobile terminal of the utility model 3rd embodiment.
Fig. 5 is the cross section structure schematic diagram of the back shroud of the mobile terminal of the utility model fourth embodiment.
Specific embodiment
As depicted in figs. 1 and 2, the back shroud 100 of the mobile terminal that the utility model first embodiment is provided includes cover plate
The first electrode layer 130 and the second electrode lay 140 of layer 110 and the mutually insulated being arranged in cover layer 110.
In the present embodiment, cover layer 110 can be glass cover-plate, because glass cover-plate is transparent, thus in cover layer 110
Decorative layer 120 is also set up on inner surface.Decorative layer 120 is used to decorate glass cover-plate, can show cover layer 110
Required color, pattern, while the other elements being arranged in blocking mobile terminal in cover layer 110.Decorative layer 120 includes shape
Into at least coating on the inner surface of cover layer 110 and at least ink layer being formed on an at least coating.It is described
First electrode layer 130 and the second electrode lay 140 are covered in the whole surface of decorative layer 120.
In other embodiments, cover layer 110 can also be the cover plate of the other materials such as plastic cover plate, and plastic cover plate can be with
For opaque, thus the first electrode layer 130 and the second electrode lay 140 can directly overlay the whole of the cover layer 110
Without setting decorative layer 120 on inner surface.
First electrode layer 130 includes multiple first electrodes 131, and the second electrode lay 140 includes multiple second electrodes 141, institute
The projection for stating first electrode 131 and second electrode 141 intersects with intersection formation electric capacity C.When finger touches mobile terminal
Cover layer 110 and stop certain hour (t >=0.5s), change of the different concaveconvex structure of finger print to electric capacity C is to differ
Sample, the capacitance change of each intersection is calculated by fingerprint control chip, then variable quantity is entered through signal amplifier
Row amplifies, and records the particular location of touched boss, you can construct the concaveconvex structure of fingerprint.
The signified first electrode layer of the utility model and the second electrode lay cover the whole inner surface of cover layer, refer to first
Electrode layer and the second electrode lay expanded range are the whole surface region of cover layer, and whole surface region constitutes fingerprint identification area
Domain, it will be understood that in fingerprint recognition region, except not existing for fingerprint because of the gap between first electrode, second electrode
Outside the induction electrode of identification, can also be because setting other functions through hole (such as the camera hole of cell phone rear cover plate) in cover layer
In the absence of the induction electrode for fingerprint recognition.By the whole interior table that first electrode layer and the second electrode lay are covered cover layer
Face, can make the whole surface of cover layer be used equally to fingerprint recognition, and increase cover layer is used to recognize the region of fingerprint, thus fingerprint
The operation of identification can be more convenient.
The utility model can make fingerprint recognition by the way that fingerprint recognition region to be expanded to the whole surface of cover layer 110
The ad-hoc location in back shroud 100 is not limited to, thus easily facilitates the use of fingerprint recognition.Simultaneously because fingerprint recognition region becomes
Greatly, also possibility can be provided for the multiple fingerprints of identification simultaneously.
Further, since first electrode layer 130 and the second electrode lay 140 are arranged on back shroud 100, it is close without considering wiring
To spend cause greatly and influence visual effect, thus can as needed control wiring density to be differentiated with the fingerprint recognition needed for reaching
Rate.Meanwhile, the material for making first electrode layer 130 and the second electrode lay 140 can also be not only restricted to transparent material.
In this embodiment, the line-spacing d1 between adjacent two first electrode 131 is 25.4 μm~254 μm, first electrode 131
The ratio of the line-spacing d1 between line width d2 and adjacent two first electrode 131 is 1/10~9/10.Line between adjacent two second electrode 141
It it is 25.4 μm~254 μm away from d3, the ratio of the line-spacing d3 between the line width d4 of second electrode 141 and adjacent two second electrode 141 is
1/10~9/10.
The line width d2 of first electrode 131 and the line width d4 of second electrode 141 can be with identical, it is also possible to different.Adjacent two
The width of the line-spacing d3 between line-spacing d1 and adjacent two second electrode 141 between one electrode 131 can be with identical, it is also possible to inconsistent.
Multiple first electrodes 131 it is parallel to each other and preferably equidistantly arrangement, multiple second electrodes 141 it is parallel to each other and preferably equidistantly row
Row, to obtain the induction module pattern of balancing performance.It is appreciated that multiple first electrodes 131 can with it is not parallel also do not wait between
Away from arrangement, multiple second electrodes 141 are same.
The first electrode layer 130 and the second electrode lay 140 be molded after can by tack coat be fixed on cover layer 110 or
On decorative layer 120.Tack coat can be glue-line, such as from dry glue, ultraviolet optical cement, PUR etc..
The molding mode of the first electrode layer 130 and the second electrode lay 140 has various, below with reference to other accompanying drawings pair
The construction and molding mode of first electrode layer and the second electrode lay are illustrated.
As shown in figure 3, the utility model second embodiment provide back shroud 200 include cover layer 210, decorative layer 220,
First electrode layer 230, the second electrode lay 240, flexible PCB 250 and tack coat 260.
Wherein, cover layer 210 is glass cover-plate, because glass cover-plate is transparent, thus is set on the inner surface of cover layer 210
Put decorative layer 220.First electrode layer 230, the second electrode lay 240 are formed by being connected up in flexible PCB 250, after shaping
Flexible PCB 250 is fixed on decorative layer 220 by tack coat 260.
When cover layer 210 is the opaque cover such as plastic cover plate, the first electrode layer 230 and the second electrode lay 240
Can be covered on the whole inner surface of the cover layer 210 without setting decorative layer 220 by tack coat 260.
First electrode layer 230 can be with identical with the material of the second electrode lay 240, it is also possible to different, and material can be selected from gold
Category simple substance (such as gold, silver, copper, zinc and aluminium) or two kinds of alloy conductive materials obtained in metal simple-substance, Graphene, CNT materials
Material and nanometer conductive material etc..The thickness of first electrode layer 230 and the second electrode lay 240 be 10nm~50 μm, preferably 20nm~
10um.The thickness of flexible PCB 250 should be as small as possible, it is to avoid thickness is excessive to cause fingerprint recognition sensitivity and resolution ratio to drop
It is low.
As shown in figure 4, the utility model 3rd embodiment provide back shroud 300 include cover layer 310, decorative layer 320,
First electrode layer 330, the 332, first gelatinous layer 333 of the second electrode lay 340, the first base material layer, the second substrate layer 342, the second glue
Matter the 343, first tack coat 361 of layer and the second tack coat 362.
Wherein, cover layer 310 is glass cover-plate, because glass cover-plate is transparent, thus is set on the inner surface of cover layer 310
Put decorative layer 320.When cover layer 310 is the opaque cover such as plastic cover plate, the first electrode layer 330 and the second electrode lay
340 may be provided on the whole inner surface of the cover layer 310 without setting decorative layer 320.
First gelatinous layer 333 is formed in the surface of the first base material layer 332, and first gelatinous layer 333 is away from first
Groove 334 is set on the surface of substrate layer 332, the first electrode layer 330 is filled in the groove 334 of first gelatinous layer 333
It is interior.
The first base material layer 332 can be selected from PET (Polyethylene terephthalate, poly terephthalic acid second two
Alcohol ester), PMMA (PolymethylMethacrylate, polymethyl methacrylate), PC (Polycarbonate, poly- carbonic acid
Ester), COC (Cyclo Olefin Copolymers, cyclenes hydrocarbon type copolymer), COP (Cyclo Olefin Polymers, ring
Olefin copolymer) etc. the inorganic material such as organic resin material or glass, sapphire, thickness be 15 μm~200 μm, preferably 50 μm~
100μm。
Thickness of the thickness of first gelatinous layer 333 less than the first base material layer 332.First gelatinous layer 333 can be ultraviolet optical cement
Layer, can also be for other light bindings, hot-setting adhesive and from dry glue.Groove 334 is the raised nano impression mould with preset shape
Impressing is formed, and first electrode layer 330 is contained in groove 334.
When above-mentioned first conductive layer 330 is formed, in the surface coating jelly of the first base material layer 332 and can solidify,
Form the first gelatinous layer 333.Then the first gelatinous layer 333 is imprinted using impressing mould, the first base is deviated from the first gelatinous layer 333
The surface of material layer 332 forms groove 334.The shape and layout of groove 334 can be set according to the electrode of required formation.Connect
Metal filled in groove 334, form first electrode layer 330.It is, for example possible to use doctor blade technique is filled out in groove 334
Silver ink is filled, then is sintered under the conditions of 150 DEG C, the silver-colored simple substance in silver ink is sintered conductive yarn into.Wherein, silver
Ink solids 35%, solvent volatilizees in sintering.First conductive layer 330 also can directly be transferred in by way of relief printing plate is imprinted
On first gelatinous layer 333.
Second gelatinous layer 343 is formed in the surface of the second substrate layer 342, and second gelatinous layer 343 is away from second
Groove 344 is set on the surface of substrate layer 342, the second electrode lay 340 is filled in the groove 344 of second gelatinous layer 343
It is interior.The material of the generation type of the second electrode lay 340, the material of the second substrate layer 342 and the second gelatinous layer 343 can be respectively
The material of generation type, the first base material layer 332 with first electrode layer 330 and the material of the first gelatinous layer 333 are identical, and this is not
Repeat.
After first electrode layer 330 and the second electrode lay 340 are molded respectively, second tack coat 362 connects described second
Substrate layer 342 and first gelatinous layer 333, connection is formed by first electrode layer 330 and the second electrode lay 340.Then borrow
First tack coat 361 is helped to connect the decorative layer 320 in the cover layer 310 and the first base material layer 332.
As shown in figure 5, the utility model fourth embodiment provide back shroud 400 include cover layer 410, decorative layer 420,
First electrode layer 430, the second electrode lay 440, the first gelatinous layer 433, substrate layer 442, the second gelatinous layer 443 and tack coat 460.
Wherein, cover layer 410 is glass cover-plate, because glass cover-plate is transparent, thus is set on the inner surface of cover layer 410
Put decorative layer 420.When cover layer 410 is the opaque cover such as plastic cover plate, the first electrode layer 430 and the second electrode lay
440 may be provided on the whole inner surface of the cover layer 410 without setting decorative layer 420.
First gelatinous layer 433 is formed on the surface of decorative layer 420, and first gelatinous layer 433 is away from cover layer 410
Groove 434 is set on surface, the first electrode layer 430 is filled in the groove 434 of first gelatinous layer 433.First colloid
The layer 433, set-up mode of first electrode layer 430 and material can be with the first gelatinous layers 333, first electrode in 3rd embodiment
The set-up mode of layer 330 is identical with material, and this is not repeated.
Second gelatinous layer 443 is formed in the surface of substrate layer 442, and second gelatinous layer 443 is away from substrate layer 442
Surface on set groove 444, the second electrode lay 440 is filled in the groove 444 of second gelatinous layer 443.Second glue
Matter layer 443, substrate layer 442, the generation type of the second electrode lay 440 and material can be with the second gelatinous layers in 3rd embodiment
343rd, the second substrate layer 342, the second electrode lay 340 generation type it is identical with material, this is not repeated.Shaping the second electrode lay
After 440, the substrate layer 442 and first gelatinous layer 433 are connected by the tack coat 460.
The back shroud 400 that the embodiment is provided eliminates one of them compared with the back shroud 300 that 3rd embodiment is provided
Substrate layer, using cover layer 410 as the carrier of first electrode layer 430, cover layer 410 is set directly at by first electrode layer 430
On, thus can relatively reduced whole back shroud 400 thickness.
The utility model also provides a kind of mobile terminal, for example, can be mobile phone, panel computer etc..The mobile terminal includes
First electrode in fingerprint control chip and the above-mentioned back shroud of any one, the fingerprint control chip and the back shroud
Layer, the second electrode lay electrical connection.When using, any one position that finger touches back shroud is capable of achieving fingerprint recognition, thus
The operation of fingerprint recognition is more convenient, simultaneously because fingerprint recognition region becomes big, multiple fingers can be contacted in back shroud simultaneously
Fingerprint recognition region, make it possible to recognize multiple fingerprints simultaneously.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply 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, the scope of this specification record is all considered to be.
Embodiment described above only expresses several embodiments of the present utility model, and its description is more specific and detailed,
But therefore can not be interpreted as the limitation to utility model patent scope.It should be pointed out that for the common skill of this area
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
Protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. a kind of back shroud of mobile terminal, including cover layer, it is characterised in that the first electrode for also being set including mutually insulated
Layer and the second electrode lay, the first electrode layer include multiple first electrodes, and the second electrode lay includes multiple second electrodes,
The projection of the first electrode and the second electrode intersects and forms electric capacity with intersection, the first electrode layer and described
The second electrode lay covers the whole inner surface of the cover layer.
2. the back shroud of mobile terminal according to claim 1, it is characterised in that the cover layer is glass cover-plate, institute
State and decorative layer is set on cover layer inner surface, the first electrode layer and the second electrode lay are arranged on the decorative layer simultaneously
Cover the whole surface of the decorative layer.
3. the back shroud of mobile terminal according to claim 2, it is characterised in that the first electrode layer and described second
Electrode layer is fixed on the decorative layer by tack coat.
4. the back shroud of mobile terminal according to claim 2, it is characterised in that the decorative layer includes being formed in described
An at least coating and at least ink layer being formed on an at least coating on cover layer inner surface.
5. the back shroud of mobile terminal according to claim 1, it is characterised in that also including flexible PCB, described
One electrode layer and the second electrode lay are formed in the flexible PCB, and the flexible PCB is fixed on by tack coat
On the inner surface of the cover layer.
6. the back shroud of mobile terminal according to claim 1, it is characterised in that also including the first base material layer, the first glue
Matter layer, the second substrate layer, the second gelatinous layer, the first tack coat and the second tack coat;
First gelatinous layer is formed in the surface of the first base material layer, first gelatinous layer away from the first base material
Groove is set on the surface of layer, the first electrode layer is filled in the groove of first gelatinous layer, first tack coat connects
Connect the cover layer and the first base material layer;
Second gelatinous layer is formed in the surface of second substrate layer, second gelatinous layer away from second base material
Groove is set on the surface of layer, the second electrode lay is filled in the groove of second gelatinous layer, second tack coat connects
Connect second substrate layer and first gelatinous layer.
7. the back shroud of mobile terminal according to claim 6, it is characterised in that also including at least one of following:
The first base material layer is identical with the material of second substrate layer;The material of first gelatinous layer and second gelatinous layer
It is identical;The first electrode layer is identical with the material of the second electrode lay.
8. the back shroud of mobile terminal according to claim 1, it is characterised in that also including the first gelatinous layer, tack coat,
Substrate layer and the second gelatinous layer, first gelatinous layer are formed in the inner surface of the cover layer, first gelatinous layer it is remote
Groove is set on the surface of the cover layer, the first electrode layer is filled in the groove of first gelatinous layer, described
Two gelatinous layers are formed in the surface of the substrate layer, second gelatinous layer away from setting groove on the surface of the substrate layer, institute
State the second electrode lay to be filled in the groove of second gelatinous layer, the tack coat connects the substrate layer and first glue
Matter layer.
9. the back shroud of mobile terminal according to claim 1, it is characterised in that the line-spacing of adjacent two first electrode is
25.4 μm~254 μm, the line width of the first electrode is 1/10~9/10 with the ratio of the line-spacing of adjacent two first electrode;It is adjacent
The line-spacing of two second electrodes is 25.4 μm~254 μm, the ratio of the line width of the second electrode and the line-spacing of adjacent two second electrode
Be worth is 1/10~9/10.
10. a kind of mobile terminal, including fingerprint control chip and back shroud, it is characterised in that the back shroud is claim
Back shroud described in 1-9 any one, the fingerprint control chip is electric with the first electrode layer, the second electrode lay
Connection.
Priority Applications (1)
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CN201621373832.9U CN206312176U (en) | 2016-12-14 | 2016-12-14 | Mobile terminal and its back shroud |
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CN201621373832.9U CN206312176U (en) | 2016-12-14 | 2016-12-14 | Mobile terminal and its back shroud |
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Publication Number | Publication Date |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109676324A (en) * | 2018-12-25 | 2019-04-26 | 蓝思科技(长沙)有限公司 | A kind of Multi-part housing processing method |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109676324A (en) * | 2018-12-25 | 2019-04-26 | 蓝思科技(长沙)有限公司 | A kind of Multi-part housing processing method |
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