CN105373778A - Fingerprint module and terminal - Google Patents
Fingerprint module and terminal Download PDFInfo
- Publication number
- CN105373778A CN105373778A CN201510744261.9A CN201510744261A CN105373778A CN 105373778 A CN105373778 A CN 105373778A CN 201510744261 A CN201510744261 A CN 201510744261A CN 105373778 A CN105373778 A CN 105373778A
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- fingerprint
- switch
- silica gel
- flexible pcb
- fingerprint module
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
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- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Image Input (AREA)
- Push-Button Switches (AREA)
Abstract
The invention relates to the terminal manufacturing field and particularly relates to a fingerprint module and a terminal. The fingerprint module comprises a silica gel supporting member, a first supporting face of the silica gel supporting member is provided with a first reinforcing board, the first reinforcing board is provided with a first flexible circuit board electrically connected with the fingerprint module, the first flexible circuit board is provided with a fingerprint sensor module electrically connected with the first flexible circuit board, the first flexible circuit board is provided with a fingerprint identification processing chip, and a second supporting face of the silica gel supporting member is provided with a switch. According to the fingerprint module, a silica gel structure which has a complex structure and is used for completely wrapping the fingerprint module is not required, processing difficulty of silica gel parts is reduced, parts are reduced, the structure is simplified, assembly is easy, the yield is improved, the switch can be directly positioned on the assembled terminal, so no deviation occurs, and thereby pressing feeling of the fingerprint module can be improved.
Description
Technical field
The present invention relates to terminal and manufacture field, be specifically related to a kind of fingerprint module and terminal.
Background technology
Along with the fast development of intelligent terminal, with it, mode of operation and very strong security performance are more and more applied on intelligent terminal fingerprint recognition easily.
Because intelligent terminal space structure is limited, optical fingerprint sensor module cannot be used, but adopt the semiconductor fingerprint sensor assembly of small volume, this kind of semiconductor transducer, no matter be condenser type or inductance type, all there is similar principle, be integrated with on " flat board " of thousands of semiconductor devices at one piece, finger plaster thereon with the another side which constituting electric capacity (inductance), because finger flat is rough and uneven in surface, salient point place contacts dull and stereotyped actual range size with concave point place just different, the capacitive/inductive numerical value formed is also just different, the different numerical value collected around this principle gathers by equipment, also the collection of fingerprint is just completed.
Due to the compact conformation of intelligent terminal, the fingerprint module of existing employing semiconductor transducer is generally directly integrated on a certain button of fuselage, in order to realize fingerprint identification function and keypress function simultaneously, need to adopt very complicated silica gel structure, substantially the element of whole fingerprint module is all contained in silica gel structure, and employing arranges paster switch and realizes contact part function on the flexible PCB that fingerprint module is positioned at silica gel structure place, like this because flexible PCB should contact with semiconductor transducer, contact with paster switch again, thus double flat of having to.
But, the accuracy requirement of the silica gel structure be included by all fingerprint module components and parts is very high, even if deviation 0.1mm will cause feel bad, and after flexible PCB double flat, in order to ensure electric property and the durability of flexible PCB, just need flexible circuit board design supporting construction, thus make fingerprint film group structure more complicated, assemble more difficult, cause final finished rate not high, in addition the tolerance due to switch paster itself is large, and is attached on flexible PCB and is easily shifted, and very easily causes feel bad.
Summary of the invention
Embodiments provide a kind of fingerprint module and terminal, by reducing the complexity of fingerprint module to the improvement of flexible PCB and switch, assembling can be easy to, improve the final finished rate of fingerprint film group, and the pressing feel of fingerprint film group can also be improved.
In view of this, embodiment of the present invention first aspect provides a kind of fingerprint module, this fingerprint module comprises silica gel support member, first supporting surface of silica gel support member is provided with the first stiffening plate, first stiffening plate is provided with the first flexible PCB for the electrical connection of fingerprint module, first flexible PCB is provided with the fingerprint sensor module be electrically connected with the first flexible PCB, and the first flexible PCB is also provided with fingerprint recognition process chip, and the second supporting surface of silica gel support member is provided with switch.
As optionally, switch is thin film switch, and silica gel support member is provided with the contact part inconsistent with switch.
As optionally, the switch fixing casing that switch comprises switching circuit board and contacts with silica gel support member, switch fixing casing respective protrusions structure place is provided with through-hole structure, plastic sheeting is provided with between switch fixing casing and switching circuit board, on plastic sheeting, corresponding contact part place is provided with bulge-structure, bulge-structure is through through-hole structure, and the inner side of bulge-structure is provided with the switch shrapnel of fitting with bulge-structure, and on switching circuit board, corresponding switch shrapnel is provided with switch contact.
As optionally, switch fixing casing is also provided with the first fixed head be fixed on by switch fixing casing on switching circuit board.
As optionally, fingerprint sensor module is provided with becket, described becket ground connection.
As optionally, fingerprint sensor module is electrically connected side with the first flexible PCB and is provided with the first connecting terminal, on the first flexible PCB, corresponding connecting terminal is provided with the second connecting terminal, and the first connecting terminal contacts conducting with the second connecting terminal.
As optionally, the first flexible PCB is fixed on the first stiffening plate by gum, and silica gel support member is fixed on the first stiffening plate by gum.
As optionally, the back side the first flexible PCB being positioned at process chip place is also provided with the second stiffening plate, the second stiffening plate is also provided with conduction gum.
As optionally, the second stiffening plate is fixed on the first flexible PCB by gum.
Embodiment of the present invention second aspect also provides a kind of terminal, and this terminal comprises above-mentioned fingerprint film group, and terminal is provided with the installation position for installing fingerprint film group.
As optionally, the becket of fingerprint module is provided with the first position limiting structure, and terminal is provided with cover, described cover is also provided with the second position limiting structure of cooperation first position limiting structure.
As optionally, the first position limiting structure is spacing shirt rim portion, and the second position limiting structure is spacing hole, and spacing shirt rim portion is connected with spacing hole.
As can be seen from the above technical solutions, the embodiment of the present invention has the following advantages: adopt in the embodiment of the present invention and arrange switch on the second supporting surface of silica gel support member, first supporting surface of switch arranges the first stiffening plate, first stiffening plate is arranged the first flexible PCB, when pressing fingerprint sensor module, masterpiece can be used on silica gel support member by the first stiffening plate, because switch contacts with silica gel support member, power can conduct to switch, thus the pressing realized switch, because silica gel itself is flexible material, can realize pressing rear recovery, thus without the need to wrapping up the baroque silica gel structure of fingerprint film group completely, reduce the difficulty of processing of silica gel parts, and parts reduce, structure simplifies, be easy to assembling, improve final yields, because the first flexible PCB is only for the connection of fingerprint sensor module and process chip, without the need to bending in order to switch, simple relative to the structure of this silica gel of paster switch support member, and this switch can directly be positioned in the terminal of installation, therefore there will not be the situation of skew, thus the pressing feel of fingerprint module can be improved.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of prior art fingerprint module;
Fig. 2 is the structural blast figure of prior art fingerprint module;
Fig. 3 is the structural blast figure of prior art fingerprint module
Fig. 4 is that of the fingerprint module of the embodiment of the present invention implements illustration;
Fig. 5 is another enforcement illustration of the fingerprint module of the embodiment of the present invention;
Fig. 6 is another enforcement illustration of the fingerprint module of the embodiment of the present invention;
Fig. 7 is another enforcement illustration of the fingerprint module of the embodiment of the present invention.
In accompanying drawing, each parts are as follows:
1, fingerprint module, 11, flexible PCB, 111, bending fixed head, 112, foam, 113, conducting resinl, 12, fingerprint sensor module, 13, silica gel, 131, gum, 132, ring-type gum, 14, stiffening plate, 15, paster switch, 16, becket, 17, holder, 18, fixed head, 2, fingerprint module, 21, first flexible PCB, , first flexible PCB 211, second stiffening plate, 212, conduction gum, 22, fingerprint sensor module, 23, silica gel support member, 231, contact part, 24, process chip, 25, switch, 251, switching circuit board, 252, switch fixing casing, 253, plastic sheeting, 2531, bulge-structure, 254, switch shrapnel, 255, first fixed head, 26, becket, 261, first position limiting structure, 27, first stiffening plate, 28, gum.
Embodiment
A kind of fingerprint module and terminal, by reducing the complexity of fingerprint module to the improvement of flexible PCB and switch, can be easy to assembling, improve the final finished rate of fingerprint film group, and can also improve the pressing feel of fingerprint film group.
The present invention program is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a part of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
Below be described in detail respectively.
Term " first ", " second ", " the 3rd " " 4th " etc. (if existence) in instructions of the present invention and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.The embodiments described herein should be appreciated that the data used like this can be exchanged in the appropriate case, so that can be implemented with the order except the content except here diagram or description.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or module that the process of series of steps or module, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or module.
Refer to Fig. 1 to Fig. 3, Fig. 1 is the structural representation of existing fingerprint module, Fig. 2 and Fig. 3 is the structural blast figure of existing fingerprint module, existing fingerprint module 1 comprises: flexible PCB 11, the one side of this flexible PCB is provided with fingerprint sensor module 12, this face is also provided with the becket 16 for being fixed in terminal, the Part II that paster switch 15 is connected is supplied to after this flexible PCB comprises the Part I similar with fingerprint sensor module 12 shape and bends, paster switch is affixed on the lateral surface of Part II, bending place is arranged on the junction of Part I and Part II, Part II is also provided with a bending place, this bending place is provided with process chip, the back side of this process chip is provided with conducting resinl 113, Part I after bending and be also provided with between Part II for the protection of and the bending fixed head 111 of fixing flexible circuit board, also a breach can be had in bending place, this indentation, there adopts the mode of filling foam 112 to be fixed, the outside of Part II is also fixed with stiffening plate 14, this stiffening plate is also connected with silica gel 13 by gum 131, visible, the shape of silica gel is for wrapping whole flexible PCB, stiffening plate becket and fingerprint sensor module, in addition, the upper surface of silica gel is also provided with ring-type gum 132, this gum makes silica gel can be fixed in terminal, in addition, this structure also comprises a holder 17, silica gel is whole puts into holder 17, holder 17 is fixed in terminal by the fixed head 18 of bottom.
Can find out, in order to ensure feel, the shape of silica gel must to becket and stiffening plate structure completely similarly to join, once double swerve when occurring that gap just there will be pressing, impact pressing feel, in addition, paster switch due to be paste or scolding tin mode be welded on flexible PCB, flexible PCB is flexible material on the one hand, easily rock, on the other hand this stickup or scolding tin mode can cause paster switch easily slippage to occur, thus make the direction of power when pressing different from the Impact direction of paster switch, feel is very poor, and the rear unresponsive situation of pressing may be there is.
The embodiment of the present invention adopts following scheme to solve the problem, refer to Fig. 4 to Fig. 7, be the enforcement illustration of the fingerprint film group of the embodiment of the present invention, fingerprint module 2 in the embodiment of the present invention can comprise: silica gel support member 23, first supporting surface of silica gel support member is provided with the first stiffening plate 27, first stiffening plate is provided with the first flexible PCB 21 for the electrical connection of fingerprint module, first flexible PCB is provided with the fingerprint sensor module 22 be electrically connected with the first flexible PCB, first flexible PCB is also provided with fingerprint recognition process chip 24, second supporting surface of silica gel support member is provided with switch 25.
It should be noted that, first supporting surface and the second supporting surface are oppositely arranged, and namely the first supporting surface is arranged on the upper surface of silica gel support member, and the second supporting surface can be arranged on the lower surface of silica gel support member, when the first supporting surface of silica gel support member is stressed, can pass to on the second supporting surface.
Can find out, adopt and switch is set on the second supporting surface of silica gel support member, first supporting surface of switch arranges the first stiffening plate, first stiffening plate is arranged the first flexible PCB, when pressing fingerprint sensor module, masterpiece can be used on silica gel support member by the first stiffening plate, because switch contacts with silica gel support member, power can conduct to switch, thus the pressing realized switch, because silica gel itself is flexible material, can realize pressing rear recovery, thus without the need to wrapping up the baroque silica gel structure of fingerprint film group completely, reduce the difficulty of processing of silica gel parts, and parts reduce, structure simplifies, be easy to assembling, improve final yields, because the first flexible PCB is only for the connection of fingerprint sensor module and process chip, without the need to bending in order to switch, simple relative to the structure of this silica gel of paster switch support member, and this switch can directly be positioned in the terminal of installation, therefore there will not be the situation of skew, thus the pressing feel of fingerprint module can be improved.
Be understandable that, this first stiffening plate is one flat plate, mainly for protecting the first flexible PCB, this first flexible PCB can not be made due to excessive pressure to go wrong.
As optionally, switch is thin film switch, and silica gel support member is provided with the contact part 231 inconsistent with switch.
As optionally, the switch fixing casing 252 that switch comprises switching circuit board 251 and contacts with silica gel support member, switch fixing casing respective protrusions structure place is provided with through-hole structure, plastic sheeting 253 is provided with between switch fixing casing and switching circuit board, on plastic sheeting, corresponding contact part place is provided with bulge-structure 2531, bulge-structure is through through-hole structure, and the inner side of bulge-structure is provided with the switch shrapnel 254 of fitting with bulge-structure, and on switching circuit board, corresponding switch shrapnel is provided with switch contact.
Can find out, adopt thin film switch, the fixed sturcture intensity of switching circuit board and switch fixing casing composition is larger, can directly be fixed in terminal by this structure, and there will not be the situation of sliding or rocking, in addition because fingerprint module only needs to be connected with silica gel support member, can link with switch in contact part on silica gel support member, when pressing fingerprint module, bulge-structure on contact part pressing plastic sheeting, drive pressing switch shrapnel, make switch shrapnel by on-off circuit conducting on switching circuit board, after unclamping this fingerprint module, on the one hand due to the opposition of silica gel support member reinstatement generation, switch shrapnel and bulge-structure are to restore to the original state and produce opposition on the other hand, fingerprint film group is resetted, thus complete and once press process.
As optionally, switch fixing casing is also provided with the first fixed head 255 be fixed on by switch fixing casing on switching circuit board.
Can find out, can strengthen further switching circuit board and switch fixing casing by arranging this first fixed head, namely switch fixing casing is tightly pressed on switching circuit board by this first fixed head, thus makes the structure of fingerprint module more firm.
As optionally, fingerprint sensor module is provided with becket 26.
Be understandable that, the internal diameter of becket is slightly roughly the same with the periphery of fingerprint sensor module, for the ease of installing, becket also can arranging the first position limiting structure 261, when being arranged in terminal, can be fixed on the cover of terminal easily.
As optionally, fingerprint sensor module is electrically connected side with the first flexible PCB and is provided with the first connecting terminal, on the first flexible PCB, corresponding connecting terminal is provided with the second connecting terminal, and the first connecting terminal contacts conducting with the second connecting terminal.
Be understandable that, the first connecting terminal on fingerprint sensor module contacts conducting with the second connecting terminal on first circuit board, and in order to reach better turn-on effect, fingerprint sensor module can be fixed on the first flexible PCB.
As optionally, the first stiffening plate is fixed on the first flexible PCB by gum 28, and silica gel support member is fixed on the first stiffening plate by gum.
Understandable, gum is the relatively simple fixed form of one, no matter herein owing to being that the first stiffening plate or silica gel support member all have enough large stickup contact area, just can be fixedly secured by gum.
As optionally, process chip is located on the first flexible PCB 29, and the first flexible PCB is electrically connected with the first flexible PCB.
Be understandable that, the design of the first flexible PCB can be convenient to wiring, makes the components' placement in terminal more reasonable.
As optionally, the one side that the first flexible PCB is not provided with process chip is also provided with on the second stiffening plate 291, second stiffening plate and is also provided with conduction gum 292.
Be understandable that, conduction gum herein mainly in order to the ground connection of process chip, thus avoids the interference that other devices produce it.
As optionally, the second stiffening plate is fixed on the first flexible PCB by gum.
Understandable, similar with the first stiffening plate, the second stiffening plate, due to enough large contact area, can be fixedly secured on the first flexible PCB by gum.
Embodiment of the present invention second aspect also provides a kind of terminal, and this terminal comprises above-mentioned fingerprint film group, and terminal is provided with the installation position for installing fingerprint film group.
Adopt Fig. 4 to the terminal of fingerprint film group embodiment illustrated in fig. 7, the structure of installing fingerprint module place can design very simple, only need to arrange an installation position, this installation position guarantees switching circuit board is fixedly secured.
As optionally, the becket of fingerprint module is provided with the first position limiting structure, terminal is also provided with the second position limiting structure of cooperation first position limiting structure.
Be understandable that, the first position limiting structure on becket and the second position limiting structure in terminal cooperatively interact, becket can be fixed in terminal firmly, thus can be precisely spacing to fingerprint sensor module, and when there will not be pressing pressing less than the situation of switch.
Be understandable that, the first position limiting structure is spacing shirt rim portion, and the second position limiting structure is spacing hole, and spacing shirt rim portion is connected with spacing hole.
For example, first position limiting structure makes the outward flange of becket form spacing shirt rim portion, the spacing hole in the spacing shirt rim portion being slightly less than becket can be designed to when terminal designs herein, this spacing hole can carry out spacing to spacing shirt rim portion, spacing shirt rim portion is connected with between spacing hole, viscose glue can be adopted bonding, becket is fixedly connected with terminal.
Those skilled in the art can be well understood to, and for convenience and simplicity of description, the system of foregoing description, the specific works process of device and unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.
In several embodiments that the application provides, should be understood that, disclosed system, apparatus and method, can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
The above, above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (12)
1. a fingerprint module, it is characterized in that: described fingerprint module comprises silica gel support member, first supporting surface of described silica gel support member is provided with the first stiffening plate, described first stiffening plate is provided with the first flexible PCB for described fingerprint module electrical connection, described first flexible PCB is provided with the fingerprint sensor module be electrically connected with described first flexible PCB, described first flexible PCB is also provided with fingerprint recognition process chip, and the second supporting surface of described silica gel support member is provided with switch.
2. fingerprint module according to claim 1, is characterized in that: described switch is thin film switch, and described silica gel support member is provided with the contact part inconsistent with described switch.
3. fingerprint module according to claim 2, it is characterized in that, the switch fixing casing that described switch comprises switching circuit board and contacts with silica gel support member, the corresponding described bulge-structure place of described switch fixing casing is provided with through-hole structure, plastic sheeting is provided with between described switch fixing casing and switching circuit board, on described plastic sheeting, corresponding described contact part place is provided with bulge-structure, described bulge-structure is through described through-hole structure, the inner side of described bulge-structure is provided with the switch shrapnel of fitting with described bulge-structure, on described switching circuit board, corresponding described switch shrapnel is provided with switch contact.
4. fingerprint module according to claim 3, is characterized in that: described switch fixing casing is also provided with the first fixed head be fixed on by described switch fixing casing on described switching circuit board.
5. fingerprint module according to claim 1, is characterized in that: described fingerprint sensor module is provided with becket, described becket ground connection.
6. fingerprint module according to claim 1, it is characterized in that: described fingerprint sensor module is electrically connected side with described first flexible PCB and is provided with the first connecting terminal, on described first flexible PCB, corresponding described connecting terminal is provided with the second connecting terminal, and described first connecting terminal contacts conducting with described second connecting terminal.
7. fingerprint module according to claim 6, is characterized in that: described first flexible PCB is fixed on described first stiffening plate by gum, and described silica gel support member is fixed on described first stiffening plate by gum.
8. fingerprint module according to any one of claim 1 to 6, is characterized in that: the back side described first flexible PCB being positioned at process chip place is also provided with the second stiffening plate, described second stiffening plate is also provided with conduction gum.
9. fingerprint film group according to claim 8, is characterized in that: described second stiffening plate is fixed on described first flexible PCB by gum.
10. a terminal, is characterized in that: described terminal comprises the fingerprint film group according to any one of claim 1 to 9, and described terminal is provided with the installation position for installing described fingerprint film group.
11. terminals according to claim 10, is characterized in that: the becket of described fingerprint module is provided with the first position limiting structure, and described terminal is provided with cover, and described cover is provided with the second position limiting structure coordinating described first position limiting structure.
12. a kind of terminals according to claim 11, is characterized in that: described first position limiting structure is spacing shirt rim portion, and described second position limiting structure is spacing hole, and described spacing shirt rim portion is connected with described spacing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510744261.9A CN105373778B (en) | 2015-11-02 | 2015-11-02 | A kind of fingerprint mould group and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510744261.9A CN105373778B (en) | 2015-11-02 | 2015-11-02 | A kind of fingerprint mould group and terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105373778A true CN105373778A (en) | 2016-03-02 |
| CN105373778B CN105373778B (en) | 2019-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510744261.9A Active CN105373778B (en) | 2015-11-02 | 2015-11-02 | A kind of fingerprint mould group and terminal |
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| CN (1) | CN105373778B (en) |
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