CN206848978U - Bio-identification module with pressure inducing function - Google Patents
Bio-identification module with pressure inducing function Download PDFInfo
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- CN206848978U CN206848978U CN201720299415.2U CN201720299415U CN206848978U CN 206848978 U CN206848978 U CN 206848978U CN 201720299415 U CN201720299415 U CN 201720299415U CN 206848978 U CN206848978 U CN 206848978U
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- pressure
- induction electrode
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- identification module
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Abstract
The utility model discloses a kind of afterbody of first flexible PCB of the bio-identification module with pressure inducing function to be provided with first pressure induction electrode, the afterbody of second flexible PCB is provided with second pressure induction electrode, separation layer is provided between the afterbody of the afterbody of first flexible PCB and the second flexible PCB, when finger presses lid surface, separation layer deforms under the pressure effect of finger, the distance between first pressure induction electrode and second pressure induction electrode is set to change, so that electric capacity between the two changes, pressure sensitive control circuit calculates the pressure of finger by the change to electric capacity between the two, so as to provide pressure sensitive function for bio-identification module.Pressure sensitive module is integrated in bio-identification module by bio-identification module of the present utility model so that inductive effects are preferable, thinner thickness, can reduce the thickness of electronic equipment.
Description
Technical field
Technical field of biometric identification is the utility model is related to, more particularly to a kind of biology with pressure inducing function
Identify module.
Background technology
With the development of science and technology, bio-identification function is widely used on the electronic products such as mobile phone.
Bio-identification module is mainly used in sensing the biological information of user's input, and the governor circuit of electronic equipment is according to bio-identification module
Whether the biological information sensed performs default function to control electronics.Bio-identification module is located at mobile phone at present
Positive demand increasingly increases, meanwhile, set the demand of pressure sensitive device also increasingly to increase below bio-identification module.Mesh
Preceding common way is that independent pressure sensitive device is set up below bio-identification module, and such a prior art has following lack
Fall into：Independent pressure sensitive device is set up below bio-identification module, it is necessary to increase the circuit and element of correlation, circuit is more
Complexity, cost are higher.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of bio-identification module with pressure inducing function, should
Bio-identification module bio-identification inductive effects are good, thinner thickness, can reduce the thickness of electronic equipment.
Technical solution of the present utility model is to provide a kind of biology with pressure inducing function with following structure
Identify module, including cover plate, chip, the first flexible PCB, the second flexible PCB and the reinforcement set gradually from top to bottom
Plate；The afterbody of the second described flexible PCB is fixed around stiffening plate downside is folded to described stiffening plate lower surface；Described
The lower surface of second flexible PCB is fixed with separation layer；The afterbody of the first described flexible PCB is around being folded on the downside of separation layer
Fixed with described separation layer lower surface；The afterbody of the first described flexible PCB is provided with first pressure induction electrode, described
The afterbody of the second flexible PCB be provided with second pressure induction electrode；Described first pressure induction electrode and second pressure sense
Electrode is answered to align；Described first pressure induction electrode and second pressure induction electrode is connected with described chip circuit.
After above structure, the bio-identification module of the present utility model with pressure inducing function, with prior art phase
Than having advantages below：
Because the afterbody of the first flexible PCB of the bio-identification module of the present utility model with pressure inducing function is set
There is first pressure induction electrode, the afterbody of the second flexible PCB is provided with second pressure induction electrode, the first flexible PCB
Separation layer is provided between the afterbody of afterbody and the second flexible PCB, when finger presses lid surface, separation layer is in finger
Deformed under pressure effect, the distance between first pressure induction electrode and second pressure induction electrode is changed, make
The electric capacity obtained between the two changes, and pressure sensitive control circuit calculates the pressure of finger by the change to electric capacity between the two,
So as to provide pressure sensitive function for bio-identification module.Bio-identification module of the present utility model integrates pressure sensitive module
In bio-identification module so that inductive effects are preferable, thinner thickness, can reduce the thickness of electronic equipment.
As an improvement, the first described flexible PCB includes the first cover layer, the first bronze medal set gradually from top to bottom
Layers of foil and the first basement membrane；Described first pressure induction electrode is located at the afterbody of the first described copper foil layer.Adopt the structure
Afterwards, it is simple in construction, it is easy to make.
As an improvement, to be exposed at the first described basement membrane outer and described for the upper surface of described first pressure induction electrode
The upper surface of first pressure induction electrode and the lower surface of described separation layer are fixed.After adopting the structure, can further it carry
High pressure inductive effects, it can further lower the thickness of bio-identification module.
As an improvement, the first described basement membrane afterbody is coated on outside the upper surface of described first pressure induction electrode；Institute
The upper surface and the lower surface of described separation layer for the first basement membrane afterbody stated are fixed.It is simple in construction after adopting the structure, system
Facilitate.
As an improvement, the first described flexible PCB includes the second basement membrane, the second copper foil set gradually from top to bottom
Layer and the second cover layer；Described second pressure induction electrode is located at described second located at described second pressure induction electrode
The afterbody of copper foil layer.It is simple in construction after adopting the structure, it is easy to make.
As an improvement, the lower surface of described second pressure induction electrode be exposed at the second described basement membrane afterbody it is outer and
The lower surface and the upper surface of described separation layer of described second pressure induction electrode are fixed.After adopting the structure, it can enter
One step improves pressure sensitive effect, can further lower the thickness of bio-identification module.
As an improvement, the second described basement membrane afterbody is coated on outside the lower surface of described second pressure induction electrode；Institute
The lower surface and the upper surface of described separation layer for the second basement membrane afterbody stated are fixed.It is simple in construction after adopting the structure, system
Facilitate.
As an improvement, described separation layer is made up of elastomeric material.Described elastomeric material is silica gel or pressure sensitive.
Brief description of the drawings
Fig. 1 is that the sectional structure of the bio-identification module embodiment one of the present utility model with pressure inducing function is illustrated
Figure.
Fig. 2 is that the sectional structure of the bio-identification module embodiment two of the present utility model with pressure inducing function is illustrated
Figure.
Shown in figure：1st, cover plate, 2, chip, the 3, first flexible PCB, the 3.1, first cover layer, the 3.2, first copper foil
Layer, the 3.3, first basement membrane, 3.4, first pressure induction electrode, the 4, second flexible PCB, the 4.1, second basement membrane, the 4.2, second bronze medal
Layers of foil, the 4.3, second cover layer, 4.4, second pressure induction electrode, 5, stiffening plate, 6, separation layer, 7, rosette.
Embodiment
With reference to specific embodiments and the drawings, the utility model is described in further detail.
Embodiment one
Refer to shown in Fig. 1, the bio-identification module of the present utility model with pressure inducing function, including from top to bottom according to
Cover plate 1, chip 2, the first flexible PCB 3, the second flexible PCB 4 and the stiffening plate 5 of secondary setting；The second described flexible electrical
The afterbody of road plate 4 is fixed around the downside of stiffening plate 5 is folded to the described lower surface of stiffening plate 5；The second described flexible PCB 4
Lower surface is fixed with separation layer 6；The afterbody of the first described flexible PCB 3 is isolated around the downside of separation layer 6 is folded to described
6 lower surface of layer are fixed；The afterbody of the first described flexible PCB 3 is provided with first pressure induction electrode 3.4, and described second is soft
The afterbody of property circuit board 4 is provided with second pressure induction electrode 4.4；Described first pressure induction electrode 3.4 and second pressure sense
Electrode 4.4 is answered to align；Described first pressure induction electrode 3.4 and second pressure induction electrode 4.4 and the described circuit of chip 2
Connection.Fixed between described the first flexible PCB 3 and the second flexible PCB 4 by first adhesive.
Described cover plate 1 is connected with chip 2 by adhesive, and the described flexible PCB 3 of chip 2 and first passes through soldering
Connection.Described cover plate 1 is provided with rosette 7 with the periphery of chip 2, and described rosette 7 passes through adhesive and the first flexible circuit
Plate 3 connects.The described inside of chip 2 is provided with bio-identification induction electrode matrix, bio-identification inductive control circuit and feeling of stress
Answer control circuit.Described bio-identification induction electrode matrix and bio-identification inductive control circuit scans and judges the life of finger
Thing feature.Described pressure sensitive control circuit passes through between first pressure induction electrode 3.4 and second pressure induction electrode 4.4
The change of electric capacity calculates the pressure of finger, so as to provide pressure sensitive function for bio-identification module.Described cover plate material is
Glass, sapphire or ceramics.Described rosette material is stainless steel, aluminium alloy or plastic cement.
The first described flexible PCB 3 includes the first cover layer 3.1, the first copper foil layer set gradually from top to bottom
3.2 and first basement membrane 3.3；Described first pressure induction electrode 3.4 is located at the afterbody of the first described copper foil layer 3.2.It is described
The afterbody of the first copper foil layer 3.2 be provided with specific pattern and form described first pressure induction electrode 3.4.The first described basement membrane
3.3 afterbodys are coated on outside the upper surface of described first pressure induction electrode 3.4.The upper table of the described afterbody of the first basement membrane 3.3
Face and the lower surface of described separation layer 6 are fixed.
The second described flexible PCB 4 includes the second basement membrane 4.1, the second copper foil layer 4.2 set gradually from top to bottom
With the second cover layer 4.3；Described second pressure induction electrode 4.4 is located at institute located at described second pressure induction electrode 4.4
The afterbody for the second copper foil layer 4.2 stated.The afterbody of the second described copper foil layer 4.2 is provided with specific pattern and forms the second described pressure
Power induction electrode 4.4.The described afterbody of the second basement membrane 4.1 is coated on outside the lower surface of described second pressure induction electrode 4.4；
The lower surface and the upper surface of described separation layer 6 of the described afterbody of the second basement membrane 4.1 are fixed.
The operation principle of bio-identification module of the present utility model with pressure inducing function is as follows：When finger presses cover clamp
During 1 surface, bio-identification induction electrode matrix scans with bio-identification inductive control circuit and judges the biological characteristic of finger.Every
Absciss layer 6 deforms upon under the pressure effect of finger, make first pressure induction electrode 3.4 and second pressure induction electrode 4.4 it
Between distance change so that electric capacity between the two changes, and pressure sensitive control circuit passes through to electric capacity between the two
Change calculate the pressure of finger, so as to for bio-identification module provide pressure sensitive function.
Embodiment two
Refer to shown in Fig. 2, the bio-identification module of the present utility model with pressure inducing function, including from top to bottom according to
Cover plate 1, chip 2, the first flexible PCB 3, the second flexible PCB 4 and the stiffening plate 5 of secondary setting；The second described flexible electrical
The afterbody of road plate 4 is fixed around the downside of stiffening plate 5 is folded to the described lower surface of stiffening plate 5；The second described flexible PCB 4
Lower surface is fixed with separation layer 6；The afterbody of the first described flexible PCB 3 is isolated around the downside of separation layer 6 is folded to described
6 lower surface of layer are fixed；The afterbody of the first described flexible PCB 3 is provided with first pressure induction electrode 3.4, and described second is soft
The afterbody of property circuit board 4 is provided with second pressure induction electrode 4.4；Described first pressure induction electrode 3.4 and second pressure sense
Electrode 4.4 is answered to align；Described first pressure induction electrode 3.4 and second pressure induction electrode 4.4 and the described circuit of chip 2
Connection.Fixed between described the first flexible PCB 3 and the second flexible PCB 4 by first adhesive.
Described cover plate 1 is connected with chip 2 by adhesive, and the described flexible PCB 3 of chip 2 and first passes through soldering
Connection.Described cover plate 1 is provided with rosette 7 with the periphery of chip 2, and described rosette 7 passes through adhesive and the first flexible circuit
Plate 3 connects.The described inside of chip 2 is provided with bio-identification induction electrode matrix, bio-identification inductive control circuit and feeling of stress
Answer control circuit.Described bio-identification induction electrode matrix and bio-identification inductive control circuit scans and judges the life of finger
Thing feature.Described pressure sensitive control circuit passes through between first pressure induction electrode 3.4 and second pressure induction electrode 4.4
The change of electric capacity calculates the pressure of finger, so as to provide pressure sensitive function for bio-identification module.The described material of cover plate 1 is
Glass, sapphire or ceramics.The described material of rosette 7 is stainless steel, aluminium alloy or plastic cement.
The first described flexible PCB 3 includes the first cover layer 3.1, the first copper foil layer set gradually from top to bottom
3.2 and first basement membrane 3.3；Described first pressure induction electrode 3.4 is located at the afterbody of the first described copper foil layer 3.2.It is described
The afterbody of the first copper foil layer 3.2 be provided with specific pattern and form described first pressure induction electrode 3.4.Described first pressure
The upper surface of induction electrode 3.4 is exposed at the upper table of described 3.3 outer and described first pressure induction electrode 3.4 of the first basement membrane
Face and the lower surface of described separation layer 6 are fixed.
The second described flexible PCB 4 includes the second basement membrane 4.1, the second copper foil layer 4.2 set gradually from top to bottom
With the second cover layer 4.3；Described second pressure induction electrode 4.4 is located at institute located at described second pressure induction electrode 4.4
The afterbody for the second copper foil layer 4.2 stated.The afterbody of the second described copper foil layer 4.2 is provided with specific pattern and forms the second described pressure
Power induction electrode 4.4.The lower surface of described second pressure induction electrode 4.4 is exposed at the afterbody of the second described basement membrane 4.1
The lower surface of outer and described second pressure induction electrode 4.4 and the upper surface of described separation layer 6 are fixed.
The operation principle of bio-identification module of the present utility model with pressure inducing function is as follows：When finger presses cover clamp
During 1 surface, bio-identification induction electrode matrix scans with bio-identification inductive control circuit and judges the biological characteristic of finger.Every
Absciss layer 6 deforms upon under the pressure effect of finger, make first pressure induction electrode 3.4 and second pressure induction electrode 4.4 it
Between distance change so that electric capacity between the two changes, and pressure sensitive control circuit passes through to electric capacity between the two
Change calculate the pressure of finger, so as to for bio-identification module provide pressure sensitive function.
Claims (9)
- A kind of 1. bio-identification module with pressure inducing function, it is characterised in that：Including set gradually from top to bottom cover plate, Chip, the first flexible PCB, the second flexible PCB and stiffening plate；The afterbody of the second described flexible PCB around be folded to mend Fixed on the downside of strong plate with described stiffening plate lower surface；The lower surface of the second described flexible PCB is fixed with separation layer；Institute The afterbody for the first flexible PCB stated is fixed around separation layer downside is folded to described separation layer lower surface；Described first is soft Property circuit board afterbody be provided with first pressure induction electrode, the afterbody of the second described flexible PCB senses provided with second pressure Electrode；Described first pressure induction electrode aligns with second pressure induction electrode；Described first pressure induction electrode and Two pressure sensitive electrodes are connected with chip circuit.
- 2. the bio-identification module according to claim 1 with pressure inducing function, it is characterised in that：Described first is soft Property circuit board include the first cover layer, the first copper foil layer and the first basement membrane that set gradually from top to bottom；Described first pressure Induction electrode is located at the afterbody of the first described copper foil layer.
- 3. the bio-identification module according to claim 2 with pressure inducing function, it is characterised in that：The first described pressure The upper surface of power induction electrode is exposed at upper surface and the institute of the outer and described first pressure induction electrode of the first described basement membrane The lower surface for the separation layer stated is fixed.
- 4. the bio-identification module according to claim 2 with pressure inducing function, it is characterised in that：The first described base Film afterbody is coated on outside the upper surface of described first pressure induction electrode；The upper surface of the first described basement membrane afterbody with it is described The lower surface of separation layer fix.
- 5. the bio-identification module with pressure inducing function according to Claims 1-4 any one, it is characterised in that： The second described flexible PCB includes the second basement membrane, the second copper foil layer and the second cover layer set gradually from top to bottom；Institute The second pressure induction electrode stated is located at the afterbody of the second described copper foil layer located at described second pressure induction electrode.
- 6. the bio-identification module according to claim 5 with pressure inducing function, it is characterised in that：The second described pressure The lower surface of power induction electrode is exposed at the afterbody of the second described basement membrane outside and the following table of described second pressure induction electrode Face and the upper surface of described separation layer are fixed.
- 7. the bio-identification module according to claim 5 with pressure inducing function, it is characterised in that：The second described base Film afterbody is coated on outside the lower surface of described second pressure induction electrode；The lower surface of the second described basement membrane afterbody with it is described The upper surface of separation layer fix.
- 8. the bio-identification module according to claim 1 with pressure inducing function, it is characterised in that：Described separation layer It is made up of elastomeric material.
- 9. the bio-identification module according to claim 8 with pressure inducing function, it is characterised in that：Described elastic material Expect for silica gel or pressure sensitive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720299415.2U CN206848978U (en) | 2017-03-24 | 2017-03-24 | Bio-identification module with pressure inducing function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720299415.2U CN206848978U (en) | 2017-03-24 | 2017-03-24 | Bio-identification module with pressure inducing function |
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| Publication Number | Publication Date |
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| CN206848978U true CN206848978U (en) | 2018-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720299415.2U Active CN206848978U (en) | 2017-03-24 | 2017-03-24 | Bio-identification module with pressure inducing function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107145254A (en) * | 2017-03-24 | 2017-09-08 | 江西合力泰科技有限公司 | Bio-identification module with pressure inducing function |
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- 2017-03-24 CN CN201720299415.2U patent/CN206848978U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107145254A (en) * | 2017-03-24 | 2017-09-08 | 江西合力泰科技有限公司 | Bio-identification module with pressure inducing function |
| CN107145254B (en) * | 2017-03-24 | 2023-05-23 | 江西合力泰科技有限公司 | Biological identification module with pressure sensing function |
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