CN107145254A - Bio-identification module with pressure inducing function - Google Patents
Bio-identification module with pressure inducing function Download PDFInfo
- Publication number
- CN107145254A CN107145254A CN201710180329.4A CN201710180329A CN107145254A CN 107145254 A CN107145254 A CN 107145254A CN 201710180329 A CN201710180329 A CN 201710180329A CN 107145254 A CN107145254 A CN 107145254A
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- Prior art keywords
- pressure
- induction electrode
- bio
- afterbody
- identification module
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
-
- 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)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Prostheses (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
First pressure induction electrode is provided with the invention discloses a kind of afterbody of first flexible PCB of the bio-identification module with pressure inducing function, 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 controls circuit to pass through the pressure of the change calculating finger 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 the bio-identification module of the present invention so that preferably, thinner thickness can reduce the thickness of electronic equipment to inductive effects.
Description
Technical field
The present invention relates to technical field of biometric identification, more particularly to a kind of bio-identification with pressure inducing function
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 is higher.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of bio-identification module with pressure inducing function, the biology
Recognize that module bio-identification inductive effects are good, thinner thickness can reduce the thickness of electronic equipment.
The technical solution of the present invention is to provide a kind of bio-identification with pressure inducing function with following structure
Module, including cover plate, chip, the first flexible PCB, the second flexible PCB and the stiffening plate set gradually from top to bottom；Institute
The afterbody for the second flexible PCB stated is fixed around stiffening plate downside is folded to described stiffening plate lower surface；Described second is soft
The lower surface of property circuit board is fixed with separation layer；The afterbody of the first described flexible PCB around be folded on the downside of separation layer with it is described
Separation layer lower surface fix；The afterbody of the first described flexible PCB is provided with first pressure induction electrode, described second
The afterbody of flexible PCB is provided with second pressure induction electrode；Described first pressure induction electrode and second pressure induction electrode
Alignment；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 invention with pressure inducing function, compared with prior art, tool
Have the advantage that：
Because the afterbody of the first flexible PCB of the bio-identification module with pressure inducing function of the present invention is pressed provided with first
Power induction electrode, the afterbody of the second flexible PCB is provided with second pressure induction electrode, the afterbody of the first flexible PCB and the
Separation layer is provided between the afterbody of two flexible PCBs, when finger presses lid surface, separation layer is acted in the pressure of finger
Under deform, the distance between first pressure induction electrode and second pressure induction electrode is changed so that between the two
Electric capacity change, pressure sensitive control circuit by electric capacity between the two change calculate finger pressure, so as to make a living
Thing identification module provides pressure sensitive function.Pressure sensitive module is integrated in bio-identification mould by the bio-identification module of the present invention
In group so that preferably, thinner thickness can reduce the thickness of electronic equipment to inductive effects.
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, 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 for the first basement membrane afterbody stated and the lower surface of described separation layer 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 upper surface of the lower surface and described separation layer of described second pressure induction electrode is 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 upper surface of the lower surface and described separation layer of the second basement membrane afterbody stated is 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 the cross section structure diagram of the bio-identification module embodiment one with pressure inducing function of the present invention.
Fig. 2 is the cross section structure diagram of the bio-identification module embodiment two with pressure inducing function of the present invention.
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 invention will be further described.
Embodiment one
Refer to shown in Fig. 1, the bio-identification module of the invention with pressure inducing function, including set gradually from top to bottom
Cover plate 1, chip 2, the first flexible PCB 3, the second flexible PCB 4 and stiffening plate 5；The second described flexible PCB 4
Afterbody is fixed around the downside of stiffening plate 5 is folded to the described lower surface of stiffening plate 5；The lower surface of the second described flexible PCB 4
It is fixed with separation layer 6；The afterbody of the first described flexible PCB 3 is around being folded to the downside of separation layer 6 and the described following table of separation layer 6
Face is fixed；The afterbody of the first described flexible PCB 3 is provided with first pressure induction electrode 3.4, the second described flexible circuit
The afterbody of plate 4 is provided with second pressure induction electrode 4.4；Described first pressure induction electrode 3.4 and second pressure induction electrode
4.4 alignment；Described first pressure induction electrode 3.4 and second pressure induction electrode 4.4 is connected with the described circuit of chip 2.
Fixed between the first described 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 is connected.The described inside of chip 2 is provided with bio-identification induction electrode matrix, bio-identification inductive control circuit and feeling of stress
Circuit should be controlled.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 described first pressure induction electrode 3.4 is formed provided with specific pattern.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 forms the second described pressure provided with specific pattern
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 upper surface of the lower surface and described separation layer 6 of the described afterbody of the second basement membrane 4.1 is fixed.
The operation principle of the bio-identification module with pressure inducing function of the present invention is as follows：When finger presses the table of cover clamp 1
During face, bio-identification induction electrode matrix scans with bio-identification inductive control circuit and judges the biological characteristic of finger.Isolation
Layer 6 is deformed upon under the pressure effect of finger, is made between first pressure induction electrode 3.4 and second pressure induction electrode 4.4
Distance change so that electric capacity between the two changes, pressure sensitive control circuit pass through to electric capacity between the two
Change calculates the pressure of finger, so as to provide pressure sensitive function for bio-identification module.
Embodiment two
Refer to shown in Fig. 2, the bio-identification module of the invention with pressure inducing function, including set gradually from top to bottom
Cover plate 1, chip 2, the first flexible PCB 3, the second flexible PCB 4 and stiffening plate 5；The second described flexible PCB 4
Afterbody is fixed around the downside of stiffening plate 5 is folded to the described lower surface of stiffening plate 5；The lower surface of the second described flexible PCB 4
It is fixed with separation layer 6；The afterbody of the first described flexible PCB 3 is around being folded to the downside of separation layer 6 and the described following table of separation layer 6
Face is fixed；The afterbody of the first described flexible PCB 3 is provided with first pressure induction electrode 3.4, the second described flexible circuit
The afterbody of plate 4 is provided with second pressure induction electrode 4.4；Described first pressure induction electrode 3.4 and second pressure induction electrode
4.4 alignment；Described first pressure induction electrode 3.4 and second pressure induction electrode 4.4 is connected with the described circuit of chip 2.
Fixed between the first described 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 is connected.The described inside of chip 2 is provided with bio-identification induction electrode matrix, bio-identification inductive control circuit and feeling of stress
Circuit should be controlled.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 described first pressure induction electrode 3.4 is formed provided with specific pattern.Described first pressure
The upper surface of induction electrode 3.4 is exposed at the upper table of the described outer and described first pressure induction electrode 3.4 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 forms the second described pressure provided with specific pattern
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 upper surface of the lower surface of outer and described second pressure induction electrode 4.4 and described separation layer 6 is fixed.
The operation principle of the bio-identification module with pressure inducing function of the present invention is as follows：When finger presses the table of cover clamp 1
During face, bio-identification induction electrode matrix scans with bio-identification inductive control circuit and judges the biological characteristic of finger.Isolation
Layer 6 is deformed upon under the pressure effect of finger, is made between first pressure induction electrode 3.4 and second pressure induction electrode 4.4
Distance change so that electric capacity between the two changes, pressure sensitive control circuit pass through to electric capacity between the two
Change calculates the pressure of finger, so as to provide pressure sensitive function for bio-identification module.
Claims (9)
1. a kind of 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 is around being folded to benefit
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 described the second flexible PCB is provided with second pressure sensing
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 described 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 following table of the outer and described second pressure induction electrode of afterbody of the second described basement membrane
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 |
|---|---|---|---|
| CN201710180329.4A CN107145254B (en) | 2017-03-24 | 2017-03-24 | Biological identification module with pressure sensing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710180329.4A CN107145254B (en) | 2017-03-24 | 2017-03-24 | Biological identification module with pressure sensing function |
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| Publication Number | Publication Date |
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| CN107145254A true CN107145254A (en) | 2017-09-08 |
| CN107145254B CN107145254B (en) | 2023-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710180329.4A Active CN107145254B (en) | 2017-03-24 | 2017-03-24 | Biological identification module with pressure sensing function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110687180A (en) * | 2019-10-16 | 2020-01-14 | 深圳市刷新智能电子有限公司 | Miniature assembled layered biosensor structure |
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| Publication number | Publication date |
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| CN107145254B (en) | 2023-05-23 |
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