CN207051927U - A kind of fingerprint identification device and mobile terminal - Google Patents
A kind of fingerprint identification device and mobile terminal Download PDFInfo
- Publication number
- CN207051927U CN207051927U CN201721073144.5U CN201721073144U CN207051927U CN 207051927 U CN207051927 U CN 207051927U CN 201721073144 U CN201721073144 U CN 201721073144U CN 207051927 U CN207051927 U CN 207051927U
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- Prior art keywords
- fingerprint
- cover plate
- printed circuit
- identification device
- fingerprint identification
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- 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.)
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Abstract
The utility model discloses a kind of fingerprint identification device, including：Fingerprint cover plate, suitable for being pressed by user's finger and receiving the finger print information of user；The fingerprint chip being arranged at below fingerprint cover plate, suitable for identifying finger print information；And pressure sensitive component, including piezoresistive material and printed circuit, piezoresistive material is arranged at the lower section of fingerprint cover plate, and printed circuit is arranged at the top position corresponding with piezoresistive material of fingerprint chip, and piezoresistive material is in contact when fingerprint cover plate is depressed with printed circuit.The invention also discloses the mobile terminal for being provided with above-mentioned fingerprint identification device.According to scheme provided by the utility model, pressure sensitive component is arranged above fingerprint chip, avoids the fatigue failure because of frequently Light deformation of fingerprint chip, while it also avoid the overvoltage of pressure sensitive component, the availability of fingerprint identification device is improved, is easy to volume production.
Description
Technical field
It the utility model is related to fingerprint identification technology field, more particularly to a kind of fingerprint identification device and mobile terminal.
Background technology
At present, fingerprint identification function has turned into the standard configuration of mobile terminal.Fingerprint identification technology can be not only used for mobile whole
The unblock and wake-up at end, the barrier of protection information data is also used as, meanwhile, its application in mobile security payment technical field
It is more and more extensive.
Fingerprint identification module has two kinds of fixed forms on mobile terminals, and one kind is depressible movable fixation, a kind of
It is not depressible fixation.For the fingerprint identification module being fixed in a manner of not depressible on mobile terminal, when user's hand
Refer to collection, matching, the unblock for being placed on and starting fingerprint when above module, easily cause false triggering.
For the problem, currently used solution method is to set a pressure sensing in the lower section of fingerprint identification module
Device, when user presses fingerprint module, all parts of fingerprint identification module produce Light deformation and are transferred to pressure sensor, when
When the pressure that pressure sensor receives reaches certain threshold value, fingerprint identification module just opens fingerprint identification function.But at this
In kind method, the pressure signal received by pressure sensor needs to pass by the Light deformation of each part in fingerprint identification module
Pass, Light deformation repeatedly can cause the fatigue of fingerprint chip (core component of fingerprint identification module) and fail.In addition, fingerprint is known
Other module is in itself and assembling of the fingerprint identification module at mobile terminal is required to cooperation (including the terminal screen of multiple parts
Cover plate, casing, fingerprint cover plate, fingerprint chip, support member etc.), each part can have manufacturing tolerance, and the assembling of part can also produce
Build-up tolerance.When pressure sensor is arranged at the lower section of fingerprint identification module, the tolerance of each part adds up, and can cause pressure
Sensor overvoltage or bottom support are inadequate.Pressure sensor overvoltage can cause sensor failure；Bottom support can not enough to refer to
Line identification module sink when pressed, can not effectively water proof and dust proof, and very unsightly.
Utility model content
Therefore, the utility model provides a kind of fingerprint identification device and mobile terminal, on trying hard to solve or at least alleviate
The problem of face is present.
According to one side of the present utility model, there is provided a kind of fingerprint identification device, including：Fingerprint cover plate, suitable for by with
Family finger presses and receives the finger print information of user；The fingerprint chip being arranged at below fingerprint cover plate, suitable for identifying finger print information；
And pressure sensitive component, including piezoresistive material and printed circuit, piezoresistive material be arranged at the lower section of fingerprint cover plate,
Printed circuit is arranged at the top position corresponding with piezoresistive material of fingerprint chip, piezoresistive material fingerprint cover plate by
It is in contact to during pressing with printed circuit.
Alternatively, according in fingerprint identification device of the present utility model, printed circuit include two be mutually not turned on lead
Line, two wires are connected to power supply, when piezoresistive material is in contact with printed circuit, two wire conductings.
Alternatively, according in fingerprint identification device of the present utility model, the material of fingerprint cover plate is in following material
Any one：Sapphire, ceramics, glass, sprayed on material, PET.
Alternatively, according in fingerprint identification device of the present utility model, fingerprint cover plate and fingerprint chip pass through bonding
Mode connects.
Alternatively, according in fingerprint identification device of the present utility model, in addition to：It is arranged at the soft of fingerprint beneath chips
Property circuit board, and the stiffening plate being arranged at below flexible PCB.
According to other side of the present utility model, there is provided a kind of mobile terminal, including the as above fingerprint described in any one
Identification device.
Alternatively, according in mobile terminal of the present utility model, in addition to elastic component and support member, elastic component are arranged at
The lower section of fingerprint identification device, support member are arranged at below elastic component.
According to scheme provided by the utility model, it is arranged at the piezoresistive material of fingerprint cover plate lower surface and is arranged at finger
The printed circuit of line chip upper surface can be arranged at the top of fingerprint chip with decomposition pressure inductive component, pressure sensitive component,
The pressure that fingerprint cover plate is subject to can be directly received, without again as existing technical scheme via the Light deformation of fingerprint chip
To transmit pressure, so as to prevent the fatigue failure of fingerprint chip.In addition, pressure sensitive component is arranged at the upper of fingerprint chip
Side, avoid the manufacturing tolerance because of parts such as fingerprint chip, flexible PCB, stiffening plates, build-up tolerance accumulative and caused by
The overvoltage of pressure sensitive component, improves the availability of fingerprint identification device, and be easy to volume production.Meanwhile fingerprint identification device and branch
Support member is realized by elastic component and is interference fitted, and good support can be provided for fingerprint identification device, avoids fingerprint identification module
It sink when pressed, so that effectively water proof and dust proof.
Brief description of the drawings
In order to realize above-mentioned and related purpose, some illustrative sides are described herein in conjunction with following description and accompanying drawing
Face, these aspects indicate the various modes that can put into practice principles disclosed herein, and all aspects and its equivalent aspect
It is intended to fall under in the range of theme claimed.Read following detailed description in conjunction with the accompanying drawings, the disclosure it is above-mentioned
And other purposes, feature and advantage will be apparent.Throughout the disclosure, identical reference generally refers to identical
Part or element.
Fig. 1 shows the profile of the fingerprint identification device 100 according to the utility model one embodiment；
Fig. 2 shows the profile of the pressure sensitive component 200 according to the utility model one embodiment；
Fig. 3 A, 3B show the schematic diagram of the printed circuit 220 according to two embodiments of the utility model.
Embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although the disclosure is shown in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
Limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.
Fig. 1 shows the profile of the fingerprint identification device 100 according to the utility model one embodiment.Fingerprint recognition fills
The surface of mobile terminal can be arranged to realize fingerprint identification function by putting 100.Mobile terminal for example can be mobile phone, flat board electricity
Brain, notebook computer, multimedia equipment, intelligent wearable device etc., but not limited to this.Fingerprint identification device 100 can be set
Below the front screen of mobile terminal, the back side or side of mobile terminal etc. can also be arranged at, the utility model is to fingerprint
The position of identification device 100 on mobile terminals is not limited.According to a kind of embodiment, in order that fingerprint identification device 100 can
To be preferably installed in mobile terminal, as shown in figure 1, also include elastic component 310 and support member 320 in mobile terminal, wherein,
Elastic component 310 is arranged at the lower section of fingerprint identification device 100, and support member 320 is arranged at the lower section of elastic component 310.Elastic component 310
For elastic construction, such as rubber layer, froth bed, foamed cotton layer etc., but not limited to this.Support member 320 is rigid structure, is suitable for referring to
Line identification device 100 provides support.Support member 320 can be the original hardware of the mobile terminals such as the center of mobile terminal, also may be used
To be outside polyvinyl chloride backing plate added etc., the utility model is not limited the material and structure setting mode of support member 320
System.Fingerprint identification device 100 can be realized by elastic component 310 with support member 320 and is interference fitted, so as to be fingerprint identification device
Good support is provided, avoids fingerprint identification module from sinking when pressed, effectively water proof and dust proof.
As shown in figure 1, fingerprint identification device 110 includes fingerprint cover plate 110, fingerprint chip 120 and pressure sensitive component
200.According to a kind of embodiment, fingerprint identification device 110 also includes flexible PCB 130 and stiffening plate 140.Flexible PCB
130 are adapted to the mainboard of fingerprint identification device 100 and mobile terminal, and stiffening plate 140 is suitable to the machine of enhancing flexible PCB 130
Tool intensity, so as to increase the life-span of flexible PCB 130.Stiffening plate 140 for example can be stainless steel, copper, aluminium, PET, tree
The materials such as fat, but not limited to this.
Fingerprint cover plate 110 is suitable to be pressed by user's finger and receive the finger print information of user.The material example of fingerprint cover plate 110
Such as can be sapphire, ceramics, glass, sprayed on material, PET, but not limited to this.Fingerprint chip 120 is arranged at fingerprint
The lower section of cover plate 110, suitable for the finger print information received by identification fingerprint cover plate 110, fingerprint chip 120 for example can be
The models such as GOODIX GF606, GF66x8, but not limited to this.According to a kind of embodiment, fingerprint cover plate 110 and fingerprint chip 120
Connected by way of bonding.
Pressure sensitive component 200 includes piezoresistive material 210 and printed circuit 220, wherein, piezoresistive material 210
The lower section of fingerprint cover plate 110 is arranged at, printed circuit 220 is arranged at top and the phase of piezoresistive material 210 of fingerprint chip 120
Corresponding position.Piezoresistive material 210 for example can be zinc oxide (ZnO, Zinc Oxide), carborundum (SiC, Silicon
Carbide), titanium oxide (TiO2, Titanium Oxide) etc., but not limited to this.It should be pointed out that piezoresistive material 210 can
To directly print in the lower surface of fingerprint cover plate 110, can also be printed on a single plank, then the plate pressed or
It is pasted on the lower section of fingerprint cover plate 110.In addition, printed circuit 220 can be directly printed in the upper surface of fingerprint chip 120,
It can be printed on a single circuit board, then the circuit board is superimposed on fingerprint chip 120.In a word, pressure-sensitive electricity
Resistance material 210 is located at the lower section of fingerprint cover plate 110, and printed circuit 220 is located at the top of fingerprint chip 120, the utility model pair
The actual setting mode of piezoresistive material 210 and printed circuit 220 is not limited.According to the technical solution of the utility model,
Pressure sensitive component 200 is arranged at the top of fingerprint chip 120, can directly receive the pressure that fingerprint cover plate 110 is subject to, without
Pressure is transmitted via the Light deformation of fingerprint chip as existing technical scheme again, so as to prevent the fatigue of fingerprint chip
Failure；In addition it is also possible to avoid the manufacturing tolerance because of parts such as fingerprint chip, flexible PCB, stiffening plates, build-up tolerance it is tired
Meter and caused by the overvoltage of pressure sensitive component 200.
Fig. 2 is according to the profile of the pressure sensitive component 200 of the utility model one embodiment, is which further illustrated
The details of pressure sensitive component 200.As shown in Fig. 2 the lower section of fingerprint cover plate 110 is provided with piezoresistive material 210, pressure-sensitive electricity
It is conductor to hinder material 210, and its resistance value can change with the pressure suffered by it.The top of fingerprint chip 120 with it is pressure-sensitive
The corresponding position of resistance material 210 is provided with printed circuit 220, it is noted that in practice, printed circuit 220 is simply thin
Thin one layer, it is intended merely to be shown more clearly that the structure of pressure sensitive component 200, in fig. 2, printed circuit 220 is drawn
Into with certain thickness.According to a kind of embodiment, printed circuit 220 includes two wires 222 and 224 being mutually not turned on, and this two
Bar wire is connected to power supply.Wire 222,224 has a variety of layout type, for example, as Fig. 3 A, 3B show two kinds it is possible
Layout type, but those skilled in the art can also design other layouts, shape and cloth of the utility model to wire 222,224
Office's mode is not limited.
Referring to Fig. 2, fingerprint cover plate 110 is attached with fingerprint chip 120 by viscose glue 124.Fingerprint cover plate 110 not by
To during pressing, piezoresistive material 210 and printed circuit 220 do not contact, and interstitial spaces 122 therebetween be present.When fingerprint lid
When plate 110 is depressed, fingerprint cover plate 110 can produce Light deformation, and the piezoresistive material 210 of the lower section of fingerprint cover plate 110 is therewith
It is under pressure and produces Light deformation so that piezoresistive material 210 is in contact with printed circuit 220.Referring to Fig. 3 A, 3B, pressing
After quick resistance material 210 contacts with printed circuit 220, because piezoresistive material 210 is conductor, leading on printed circuit 220
Line 222 and wire 224 are turned on by piezoresistive material 210, form galvanic circle.Due to the resistance of piezoresistive material 210
Value can change with pressure size, and different pressure can to produce different electric currents in galvanic circle, and in general, pressure is got over
Greatly, the resistance of piezoresistive material 210 is smaller, and the electric current in galvanic circle is bigger.Further, those skilled in the art accordingly may be used
To set corresponding control strategy to avoid the false triggering of fingerprint recognition, for example, it is contemplated that often comparing to finger pressure during false touch
It is smaller, when detecting that the electric current in galvanic circle is more than certain threshold value (when namely finger pressure is more than certain threshold value), refer to
Line chip 120 just identifies finger print information；When the electric current in galvanic circle is not up to the threshold value, the nonrecognition of fingerprint chip 120 refers to
Line information, so as to avoid the false triggering of fingerprint recognition.
In the specification that this place provides, numerous specific details are set forth.It is it is to be appreciated, however, that of the present utility model
Embodiment can be put into practice in the case of these no details.In some instances, known side is not been shown in detail
Method, structure and technology, so as not to obscure the understanding of this description.
Similarly, it will be appreciated that in order to simplify the disclosure and help to understand one or more in each utility model aspect
Individual, in the description to exemplary embodiment of the present utility model above, each feature of the present utility model is divided together sometimes
Group is into single embodiment, figure or descriptions thereof.However, the method for the disclosure should be construed to reflect following meaning
Figure：The requires of the utility model i.e. claimed is than the feature more features that is expressly recited in each claim.More
Exactly, as the following claims reflect, it is to be less than single reality disclosed above in terms of utility model
Apply all features of example.Therefore, it then follows thus claims of embodiment are expressly incorporated in the embodiment,
Wherein each claim is used as separate embodiments of the present utility model in itself.
Those skilled in the art should be understood the module or unit or group of the equipment in example disclosed herein
Part can be arranged in equipment as depicted in this embodiment, or alternatively can be positioned at and the equipment in the example
In different one or more equipment.Module in aforementioned exemplary can be combined as a module or be segmented into addition multiple
Submodule.
Those skilled in the art, which are appreciated that, to be carried out adaptively to the module in the equipment in embodiment
Change and they are arranged in one or more equipment different from the embodiment.Can be the module or list in embodiment
Member or component be combined into a module or unit or component, and can be divided into addition multiple submodule or subelement or
Sub-component.In addition at least some in such feature and/or process or unit exclude each other, it can use any
Combination is disclosed to all features disclosed in this specification (including adjoint claim, summary and accompanying drawing) and so to appoint
Where all processes or unit of method or equipment are combined.Unless expressly stated otherwise, this specification (including adjoint power
Profit requires, summary and accompanying drawing) disclosed in each feature can be by providing the alternative features of identical, equivalent or similar purpose come generation
Replace.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments
In included some features rather than further feature, but the combination of the feature of different embodiments means in this practicality newly
Within the scope of type and form different embodiments.For example, in the following claims, embodiment claimed
One of any mode can use in any combination.
In addition, be described as herein can be by the processor of computer system or by performing for some in the embodiment
The method or the combination of method element that other devices of the function are implemented.Therefore, have and be used to implement methods described or method
The processor of the necessary instruction of element forms the device for implementing this method or method element.In addition, device embodiment
Element described in this is the example of following device：The device is used to implement by order to implement the element of the purpose of utility model institute
The function of execution.
As used in this, unless specifically stated so, come using ordinal number " first ", " second ", " the 3rd " etc.
Description plain objects are merely representative of the different instances for being related to similar object, and are not intended to imply that the object being so described must
Must have the time it is upper, spatially, in terms of sequence or given order in any other manner.
Although describing the utility model according to the embodiment of limited quantity, above description, this technology are benefited from
It is in field it is clear for the skilled person that in the scope of the utility model thus described, it can be envisaged that other embodiments.In addition,
It should be noted that the language used in this specification primarily to readable and teaching purpose and select, rather than in order to
Explain or limit theme of the present utility model and select.Therefore, without departing from the scope and spirit of the appended claims
In the case of, many modifications and changes will be apparent from for those skilled in the art.For this
The scope of utility model, the disclosure done to the utility model are illustrative and not restrictive, the scope of the utility model
It is defined by the appended claims.
Claims (7)
- A kind of 1. fingerprint identification device, it is characterised in that including：Fingerprint cover plate, suitable for being pressed by user's finger and receiving the finger print information of user；The fingerprint chip being arranged at below fingerprint cover plate, suitable for identifying the finger print information；AndPressure sensitive component, including piezoresistive material and printed circuit, the piezoresistive material are arranged at the fingerprint lid The lower section of plate, the printed circuit are arranged at the top position corresponding with the piezoresistive material of the fingerprint chip, institute Piezoresistive material is stated to be in contact with the printed circuit when the fingerprint cover plate is depressed.
- 2. device as claimed in claim 1, it is characterised in that the printed circuit includes two wires being mutually not turned on, and two Bar wire is connected to power supply, when the piezoresistive material is in contact with the printed circuit, two wire conductings.
- 3. the device as any one of claim 1 or 2, it is characterised in that the material of the fingerprint cover plate is following material Any one in material：Sapphire, ceramics, glass, sprayed on material, PET.
- 4. device as claimed in claim 1, it is characterised in that the side that the fingerprint cover plate and the fingerprint chip pass through bonding Formula connects.
- 5. device as claimed in claim 1, it is characterised in that also include：It is arranged at the flexible electrical of the fingerprint beneath chips Road plate, and the stiffening plate being arranged at below the flexible PCB.
- 6. a kind of mobile terminal, it is characterised in that including the fingerprint identification device as any one of claim 1-5.
- 7. mobile terminal as claimed in claim 6, it is characterised in that also set including elastic component and support member, the elastic component The lower section of the fingerprint identification device is placed in, the support member is arranged at below the elastic component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721073144.5U CN207051927U (en) | 2017-08-23 | 2017-08-23 | A kind of fingerprint identification device and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721073144.5U CN207051927U (en) | 2017-08-23 | 2017-08-23 | A kind of fingerprint identification device and mobile terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207051927U true CN207051927U (en) | 2018-02-27 |
Family
ID=61503507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721073144.5U Expired - Fee Related CN207051927U (en) | 2017-08-23 | 2017-08-23 | A kind of fingerprint identification device and mobile terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207051927U (en) |
-
2017
- 2017-08-23 CN CN201721073144.5U patent/CN207051927U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180227 |
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| CF01 | Termination of patent right due to non-payment of annual fee |