CN107066920A - Fingerprint recognition panel and device - Google Patents
Fingerprint recognition panel and device Download PDFInfo
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- CN107066920A CN107066920A CN201611206978.9A CN201611206978A CN107066920A CN 107066920 A CN107066920 A CN 107066920A CN 201611206978 A CN201611206978 A CN 201611206978A CN 107066920 A CN107066920 A CN 107066920A
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- transparent
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- fingerprint recognition
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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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- Human Computer Interaction (AREA)
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- Theoretical Computer Science (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
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Abstract
The invention discloses a kind of fingerprint recognition panel and device, wherein panel has double-layer structure, and one layer is transparent finger sensing arrays, and another layer is transparent signal process circuit；It is provided between transparent finger sensing arrays and transparent signal process circuit on transparent insulation film, transparent insulation film and is provided with through hole, is connected between transparent finger sensing arrays and transparent signal process circuit by through hole；Transparent finger sensing arrays include multiple electrically conducting transparent panels；During work, electrically conducting transparent panel senses to form electric capacity in response to outside finger, and transparent signal process circuit is charged by through hole to electrically conducting transparent panel, and the magnitude of voltage that acquisition electric capacity is stored after charging terminates is exported.Fingerprint recognition panel and device that the present invention is provided, reduce loss of the signal during transmission, eliminate line parasitic capacitance and coupled capacitor to the interference of the signal identified, improve the precision of fingerprint recognition.
Description
Technical field
The present invention relates to field of computer technology, more particularly to a kind of fingerprint recognition panel and device.
Background technology
With the progress and the development of technology of society, in recent years, the electronics business such as mobile banking, mobile phone wallet, shopping at network
Application of the business business on Intelligent mobile equipment is increasingly extensive.Correspondingly, the public for integrated electronic component performance and
The requirement of the network information security also more and more higher.Fingerprint is due to becoming person identification with uniqueness and stability
A kind of effective means.Capacitance type fingerprint identification is the focus studied at present.Capacitance type fingerprint is recognized based on the electric capacity to fingerprint
Detection is realized, on the one hand in response between one or more of fingerprint Identification sensor capacitor plate, on the other hand in response to
The ridge of user's finger and valley (epidermis of the finger of such as user, or may user finger hypodermic layer) between different electricity
Content amount, to provide the set of finger print information.
Trendy " iPhone " smart mobile phone that Apple Inc. in 2013 takes the lead in issuing under with the addition of the work(of fingerprint recognition
Energy.Henceforth major cell phone manufacturers are successively developed and apply similar identification technology, and fingerprint sensor is integrated into intelligence
In mobile phone, the functions such as wireless payment are carried out for unlocking screen and the traditional Password Input of replacement.Successive Huawei, Samsung
It with the addition of fingerprint identification function.
However, the several commercial Fingerprint Identification Unit occurred in the market is mostly based on the monocrystalline silicon or polycrystalline of maturation
Silicon base CMOS technological design and manufacture, constitute electrode and interconnection line, although cost is relatively low, small volume with metal, and technology compared with
For maturation, but they have a common defect：Whole fingerprint identification module can not be made transparent, it is impossible to it is portable
The transparent touch panel array of electronic equipment (such as smart mobile phone or tablet personal computer) is integrated.This opaque silicon substrate fingerprint recognition
Module occupies the region outside display panel, the effective display area of mobile phone is limited, with current smart mobile phone screen enlarging, narrow side
Trend it is incompatible with.In addition, from operating experience, silicon substrate Fingerprint Identification Unit is configured at Home key or the mobile phone back side, and
It is not directly perceived easy-to-use, if using for slip scan formula be not then more convenient；Traditional silicon substrate Fingerprint Identification Unit scan area
Usually 5mm × 5mm, the finger print information obtained is limited after all, from security, there is certain potential safety hazard.
The content of the invention
In view of the shortcomings of the prior art, the invention provides integrated transparent finger sensing arrays and the transparent signal processing of one kind
The fingerprint recognition panel and device of circuit, reduce loss of the signal during transmission, it is to avoid the interference of outer signals,
Can be with accurately identifying fingerprint signal.
The fingerprint recognition panel that the present invention is provided, with double-layer structure, one layer is transparent finger sensing arrays, and another layer is
Transparent signal process circuit；
Transparent insulation film is provided between the transparent finger sensing arrays and the transparent signal process circuit, it is described
Through hole is provided with transparent insulation film, institute is passed through between the transparent finger sensing arrays and the transparent signal process circuit
State through hole connection；
The transparent finger sensing arrays include multiple electrically conducting transparent panels；During work, the electrically conducting transparent panel response
Sense to form electric capacity in outside finger, the transparent signal process circuit enters the electrically conducting transparent panel by the through hole
Row charging, and obtain the magnitude of voltage that the electric capacity stored after charging terminates and exported.
As a kind of embodiment, the transparent signal process circuit includes transparent matrix and is layered line and multiple
Clear signal processing unit；
The transparent matrix layering line connection transparent signal processing unit and outside scanning circuit；
During work, scanning circuit applies pulse scanning signal to transparent matrix layering line, scans the pulse
Signal is transmitted to transparent signal processing unit each described successively.
As a kind of embodiment, the transparent matrix layering line includes power line, horizontal scanning line and row output
Line.
As a kind of embodiment, the transparent signal processing unit, which includes input controlling transistor unit, sampling, to be protected
Hold circuit, operational amplification circuit and analog to digital conversion circuit；
The input controlling transistor unit, connects the electrically conducting transparent panel, for entering to the electrically conducting transparent panel
Row charging；
The sampling hold circuit, operational amplification circuit and analog to digital conversion circuit are sequentially connected；The sampling keeps electricity
Road is also connected with the electrically conducting transparent panel, after charging terminates, and the discharge signal of the electrically conducting transparent panel sequentially passes through described adopt
Sample holding circuit, operational amplification circuit, analog to digital conversion circuit output.
As a kind of embodiment, the electrically conducting transparent panel and the transparent signal processing unit are corresponded, and are led to
Cross the through hole connection.
As a kind of embodiment, one transparent signal processing unit of multiple electrically conducting transparent panel correspondences,
Connected by the through hole.
As a kind of embodiment, the transparent finger sensing arrays connect a transparent glass substrate.
As a kind of embodiment, the transparent signal process circuit connects a transparent glass substrate.
As a kind of embodiment, the transparent signal process circuit is built by thin film transistor (TFT).
Correspondingly, the present invention also provides a kind of fingerprint identification device, including above-mentioned fingerprint recognition panel, in addition to scanning electricity
Road, transparent glass substrate and main control module；
The fingerprint recognition panel, on the transparent glass substrate, and connects the scanning circuit and main control module；
Electrically conducting transparent panel in the fingerprint recognition panel senses shape in response to the finger on the transparent glass substrate
Into electric capacity；Scanning circuit described in the master control module controls applies to the transparent signal process circuit in the fingerprint recognition panel
Pulse signal, is charged by the transparent signal process circuit to the electrically conducting transparent panel；It is described after charging terminates
Transparent signal process circuit obtains the magnitude of voltage that the electric capacity stored and exported to the main control module, the main control module according to
Finger sensing is identified the magnitude of voltage.
The beneficial effects of the invention are as follows：
Fingerprint recognition panel and device that the present invention is provided, by transparent finger sensing arrays and transparent signal process circuit collection
It is integrally formed, wherein transparent finger sensing arrays are when lower floor is deposited directly to transparent glass substrate surface, finger is in transparent glass
The another side of glass substrate is touched, it becomes possible to is induced larger capacitance, is reduced the shadow of coupled capacitor and the parasitic capacitance of line
Ring, be suitable for the thicker application of glass；If transparent finger sensing arrays are on upper strata, transparent signal process circuit is in lower floor, then
The spacing between inductance capacitance panel is added, is suitable for the relatively thin application of glass.
Fingerprint recognition panel and device that the present invention is provided, provide different structures for different identification applications, subtract
Lack loss of the signal during transmission, eliminate line parasitic capacitance and coupled capacitor to the dry of the signal that identifies
Disturb, improve the precision of fingerprint recognition.
Brief description of the drawings
Fig. 1 a are the structural representation for the fingerprint recognition panel that the embodiment of the present invention one is provided；
Fig. 1 b are the schematic cross-section of the fingerprint recognition panel shown in Fig. 1 a；
Fig. 2 is the structural representation for the fingerprint recognition panel that the embodiment of the present invention two is provided；
Fig. 3 a are the structural representation for the fingerprint recognition panel that the embodiment of the present invention three is provided；
Fig. 3 b are the schematic cross-section of the fingerprint recognition panel shown in Fig. 3 a；
Fig. 4 is the structural representation for the fingerprint recognition panel that the embodiment of the present invention four is provided；
Fig. 5 is the structural representation for the fingerprint recognition panel that the embodiment of the present invention five is provided；
Fig. 6 is the structural representation for the fingerprint recognition panel that the embodiment of the present invention six is provided；
Fig. 7 is the circuit theory diagrams for the fingerprint identification device that the embodiment of the present invention seven is provided.
Embodiment
Below in conjunction with accompanying drawing, the technical characteristic above-mentioned and other to the present invention and advantage are clearly and completely described,
Obviously, described embodiment is only the section Example of the present invention, rather than whole embodiments.
Refer to Fig. 1 a and Fig. 1 b, the fingerprint recognition panel that the embodiment of the present invention one is provided, it is illustrated that structure is DC operation
Pattern.The panel construction include up and down two layers, below one layer be transparent finger sensing arrays, above one layer be transparent signal handle
Circuit.The array that transparent finger sensing arrays are made up of multiple electrically conducting transparent panels 11, is grown on transparent glass substrate 10.
Transparent signal process circuit positioned at upper strata includes transparent matrix and is layered line and multiple transparent signal processing units 12.It is transparent
Across layer of transparent insulation film 13 between finger sensing arrays and transparent signal process circuit, connected by through hole 131.It is transparent
Substrate of the insulation film equivalent to the transparent signal process circuit positioned at upper strata.
Each electrically conducting transparent panel 11 is not connected each other, and it is grown and wide be less than fingerprint ridge and valley (fingerprint ridge is fingerprint
The part that line protrudes, fingerprint valley is the part that falls in of fingerprint line) width, to ensure every fingerprint ridge and valley (width 300
~500um) can with one electric capacity of formation of electrically conducting transparent panel 11, the size of electric capacity by electrically conducting transparent panel 11 area and
The thickness of transparent glass substrate 10 is determined.In order to ensure the precision of identification, while reducing the point non-fully sensed, electrically conducting transparent
The area of panel 11 should reach sufficiently small.The area for the transparent finger sensing arrays that electrically conducting transparent panel 11 is constituted is answered according to actual
For designing and (being arranged in diagram for two rows two, actual columns and line number are not limited).
Transparent matrix layering line includes power line (not shown), horizontal scanning line 14, column output line 15.Transparent signal processing
Unit 12 includes input controlling transistor unit, sampling hold circuit, operational amplification circuit and analog to digital conversion circuit.Input control
Transistor unit connection electrically conducting transparent panel 11 processed, charges to electrically conducting transparent panel 11；After charging terminates, transparent conductive surface
The discharge signal of plate 11 sequentially passes through sampling hold circuit, operational amplification circuit, analog to digital conversion circuit output.
Horizontal scanning line 14 is made up of many lines, scanning circuit and multiple input controlling transistors of often going outside connection
Unit.Input controlling transistor unit controls its opening to be also off by the pulse signal gone, and its other end is connected to transparent lead
Electric panel 11.The output end connection column output line 15 of transparent signal processing unit 12.Column output line 15 is according to needed for measured signal
Precision determine that more high-precision signal then needs more column output lines 15.
The working method of above-mentioned fingerprint recognition panel is as follows：
When finger touches the back side (one side relative with growing transparent finger sensing arrays) of transparent glass substrate 10,
Finger print ridge and valley can form of different sizes with the sensing of electrically conducting transparent panel 11 positioned at the another side of transparent glass substrate 10
Electric capacity C1And C2, during due to fingerprint ridge and the full contact of transparent glass substrate 10, do not completely attached between fingerprint valley and glass,
Across the air of a determining deviation, the electric capacity induced is really the partition capacitance of transparent glass substrate 10 and air partition capacitance
Series connection, cause C1And C21-10 times of difference.
Transparent signal process circuit opens input controlling transistor unit by inputting the pulse signal on line 14, and right
The electrically conducting transparent panel 11 of the lower section of transparent signal processing unit 12 carries out discharge and recharge, according to the of different sizes of inductance capacitance, electric discharge
The quantity of electric charge out is also different, then transparent signal process circuit by column output line 15 by signal output.
Referring to Fig. 1 b, electrically conducting transparent panel 11 is grown directly upon on transparent glass substrate 10.Transparent finger sensing arrays and
Across layer of transparent insulation film between transparent signal process circuit, connected by through hole 131.Transparent insulation film is equivalent to position
In the substrate of upper strata transparent signal process circuit.Upper strata visible part is transparent signal processing unit 12 and column output line 15.
The fingerprint recognition panel provided referring to Fig. 2, the embodiment of the present invention two, compared with embodiment one, bilevel position
Put and swap.One layer of position transparent signal process circuit below, above one layer be transparent finger sensing arrays.
Transparent signal process circuit positioned at lower floor (is shown by transparent signal processing unit 22 and transparent matrix layering line
Horizontal scanning line 24, column output line 25), it is grown on transparent glass substrate 20, layer of transparent insulation film 23 is covered with above.
The array that transparent finger sensing arrays positioned at upper strata are made up of multiple electrically conducting transparent panels 21 is constituted, two layers up and down
Connected by through hole 231.Finger can be placed directly in the insulation film enterprising for one layer of insulation film of regrowth on this structure
Row fingerprint recognition.If do not grown insulation film overleaf, finger can transparent glass substrate 20 another side, enter across glass
Row fingerprint recognition.
The transparent glass substrate back side is placed on for finger, embodiment one and embodiment two are applied to the glass base of different-thickness
Plate, it is specific as follows：
In embodiment one, transparent finger sensing arrays are in lower floor, when being deposited directly to glass baseplate surface, and finger is in glass
The another side of substrate induces larger capacitance, and reduces the influence of coupled capacitor and the parasitic capacitance of line, is suitable for glass
The thicker application of glass substrate.
In embodiment two, transparent finger sensing arrays add induced electricity in upper strata, transparent signal process circuit in lower floor
Hold the spacing between panel, be suitable for the relatively thin application of glass substrate.
For one layer of insulation film of regrowth on double-decker, finger, which is placed directly on film, carries out fingerprint recognition,
The fingerprint recognition panel provided suitable for embodiment two.The distance of the identification method electric capacity to be formed because finger senses can basis
The insulation film thickness control of actual growth, and the insulation film 1-4 order of magnitude thinner than glass substrate so that what sensing was formed
Electric capacity is larger, and the requirement to transparent signal process circuit will be reduced accordingly, improves the quality of transparent fingerprint recognition.
The fingerprint recognition panel provided referring to Fig. 3 a and Fig. 3 b, the embodiment of the present invention three, it is illustrated that structure is alternate current operation mould
Formula.The panel construction include up and down two layers, below one layer be transparent finger sensing arrays, above one layer be transparent signal handle electricity
Road.Across layer of transparent insulation film 33 between transparent finger sensing arrays and transparent signal process circuit, connected by through hole 331
Connect.Substrate of the transparent insulation film 33 equivalent to upper strata transparent signal process circuit.
Compared with embodiment one, the transparent finger sensing arrays positioned at lower floor are arranged on transparent glass substrate 30, wherein
The area of electrically conducting transparent panel 31 it is relative diminish, meanwhile, quantity correspondence increases.Transparent signal process circuit positioned at upper strata includes
Transparent signal processing unit 32 and transparent matrix layering line (showing horizontal scanning line 34, column output line 35).Horizontal scanning line
34 are made up of many lines, scanning circuit and multiple input controlling transistor units of often going outside connection.Each transparent letter
Number processing unit 32 is connected by two through holes 331 with two electrically conducting transparent panels 31.Transparent signal processing unit 32 passes through logical
Hole 331 applies AC signal to an electrically conducting transparent panel 31, and AC signal is transferred to another of electric capacity by inductance capacitance
Pole plate, then another adjacent electrically conducting transparent panel 31 of correspondence is transmitted back to, then the AC signal passed back is passed back by through hole 33
Transparent signal processing unit 32, is exported by column output line 35 again by signal transacting.
As shown in Figure 3 b, two electrically conducting transparent panels 31 of each transparent signal processing unit 32 correspondence, upper strata visible portions
It is divided into transparent signal processing unit 32 and column output line 35.
The fingerprint recognition panel provided referring to Fig. 4, the embodiment of the present invention four, compared with embodiment three, bilevel position
Put and swap.Layer of transparent signal processing circuit, including transparent signal processing unit 42 and transparent matrix layering company below
Line (shows horizontal scanning line 44, column output line 45).Transparent signal process circuit is grown on clear glass base 40, is covered above
Layer of transparent insulation film 43.One layer is the transparent finger sensing arrays being made up of multiple electrically conducting transparent panels 41 above, on
Descend two layers and connected by through hole 431.Finger can be placed directly in the insulation thin for one layer of insulation film of regrowth on this structure
Fingerprint recognition is carried out on film.If do not grown insulation film overleaf, finger can transparent glass substrate 40 another side, across
Transparent glass substrate 40 carries out fingerprint recognition.
Referring to Fig. 5, the fingerprint recognition panel that the embodiment of the present invention five is provided, including two layers up and down, below one layer be transparent
Finger sensing arrays, above one layer be transparent signal process circuit.Transparent finger sensing arrays are by multiple electrically conducting transparent panels
The array of 51 compositions, is grown on transparent glass substrate 58.Compared with embodiment one, below one layer of electrically conducting transparent panel 51
Area is constant, while quantity is also constant.Transparent signal process circuit positioned at upper strata is swept comprising transparent signal processing unit 52, row
Retouch line 54, column output line 55, input controlling transistor unit 56 and output alignment unit 57.Horizontal scanning line is by many line structures
Into connection scanning circuit and multiple input controlling transistor units 56 of often going.
The distinctive points of embodiment five and embodiment one are, multiple transparent in the fingerprint recognition panel that embodiment five is provided
One transparent signal processing unit 52 of the conductive correspondence of panel 51.Specifically as shown in figure 5, each transparent signal processing unit 52 passes through
Four through holes 53 are connected (particular number can be according to the design variation of signal processing circuit) with four electrically conducting transparent panels 51.It is transparent
Signal processing circuit opens input controlling transistor unit by inputting the pulse signal on horizontal scanning line 54, and to transparent signal
Four electrically conducting transparent panels 51 of the lower section of processing unit 52 carry out discharge and recharge simultaneously, by the processing to four discharge signals, so
Four signals are output on column output line 55 by transparent signal process circuit in turn in order afterwards.
The fingerprint recognition panel provided referring to Fig. 6, the embodiment of the present invention six, compared with embodiment five, bilevel position
Put and exchanged.Above one layer be transparent finger sensing arrays, below one layer be transparent signal process circuit.Transparent fingerprint sense
Array is surveyed to be made up of multiple electrically conducting transparent panels 61.Transparent signal process circuit is by transparent signal processing unit 62 and transparent square
Battle array layering line (showing horizontal scanning line 44, column output line 45) is constituted, and is grown on transparent glass substrate 60, is covered with above
Layer of transparent insulation film 63.Four electrically conducting transparent panels 61 pass through four through holes 631 and a transparent signal processing unit 62
Connection.Finger can be placed directly on the insulation film by one layer of insulation film of regrowth on this structure carries out fingerprint recognition.
If do not grown insulation film overleaf, finger can transparent glass substrate 30 another side, enter across transparent glass substrate 60
Row fingerprint recognition.
Fingerprint recognition panel in above-described embodiment one to six, is layered line application pulse to matrix by scanning circuit and sweeps
Signal is retouched, signal is transferred to each transparent signal processing unit successively, by graduation sandwich construction to ensure the company between circuit
It is logical, reduce parasitic capacitance.
According to the requirement of accuracy of identification and performance, electrically conducting transparent panel and transparent signal processing unit can correspond logical
Multiple through holes are crossed to be attached, also can one transparent signal processing unit of multiple electrically conducting transparent panel correspondences.Such as only need to carry out
Touch-control identification, only need to be by the enlarged leather area of electrically conducting transparent panel.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of fingerprint identification device, and the work of the device is former
Reason is identical with the operation principle of above-mentioned fingerprint recognition panel, repeats part no longer redundant later.
The fingerprint identification device that the embodiment of the present invention seven is provided, including the fingerprint recognition panel in above-described embodiment, are also wrapped
Scanning circuit, transparent glass substrate and main control module are included, fingerprint recognition panel is located on transparent glass substrate, and connects scanning
Circuit and main control module.
Electrically conducting transparent panel in fingerprint recognition panel senses to form electric capacity in response to the finger on transparent glass substrate；It is main
Control module control scanning circuit and pulse signal is applied to the transparent signal process circuit in fingerprint recognition panel, pass through transparent signal
Process circuit charges to electrically conducting transparent panel；After charging terminates, transparent signal process circuit obtains what electric capacity was stored
Magnitude of voltage is exported to main control module, and finger sensing is identified according to magnitude of voltage for main control module.
Specifically, as a kind of embodiment, as shown in fig. 7, main control module 70 controls scanning circuit 71, many are passed through
Horizontal scanning line applies pulse signal to transparent signal process circuit line by line, and pulse signal is to (the i.e. transparent conductive surface of capacitor plate 72
Plate) charged；After charging complete, electric capacity is discharged, and discharge signal passes through sampling hold circuit 73, then by operation amplifier
Circuit 74, then by analog to digital conversion circuit 75, is exported to main control module 70 finally by column output line.
The space structure and identification form of fingerprint recognition panel and device provided in an embodiment of the present invention, simplify peripheral electricity
Road, improves the precision of identification, eliminates line parasitic capacitance and coupled capacitor to the interference of the signal identified, and be directed to
Different identification applications provide different structural models.
Fingerprint recognition panel provided in an embodiment of the present invention has transparent finger sensing arrays and transparent signal process circuit
Bilevel structure, the different design application of correspondence.Wherein transparent finger sensing arrays are deposited directly to transparent glass in lower floor
During glass substrate surface, finger is touched in the another side of transparent glass substrate, it becomes possible to is induced larger capacitance, is reduced coupling
The influence of the parasitic capacitance of electric capacity and line is closed, is suitable for the thicker application of glass.If transparent finger sensing arrays are on upper strata, thoroughly
Clear signal process circuit then adds the spacing between inductance capacitance panel in lower floor, is suitable for the relatively thin application of glass.It is transparent
Signal processing circuit is more relative to the panel number of plies of transparent finger sensing arrays, and thickness is thicker.
It should be strongly noted that fingerprint recognition panel provided in an embodiment of the present invention, by transparent finger sensing arrays and
Transparent signal process circuit piece is integrated on a piece, and all circuit units are based on transparent film transistor realization on piece,
Obtained by thin film deposition.
The present invention reduces letter by the way that transparent signal process circuit is directly integrated with transparent finger sensing arrays
Loss number during transmission, it is to avoid the interference of outer signals, can more accurately identify fingerprint signal.
Particular embodiments described above, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, it will be appreciated that the foregoing is only the specific embodiment of the present invention, the protection being not intended to limit the present invention
Scope.Particularly point out, to those skilled in the art, within the spirit and principles of the invention, that is done any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of fingerprint recognition panel, it is characterised in that with double-layer structure, one layer is transparent finger sensing arrays, another layer
For transparent signal process circuit；
Transparent insulation film is provided between the transparent finger sensing arrays and the transparent signal process circuit, it is described transparent
Through hole is provided with insulation film, by described logical between the transparent finger sensing arrays and the transparent signal process circuit
Hole is connected；
The transparent finger sensing arrays include multiple electrically conducting transparent panels；During work, the electrically conducting transparent panel is in response to outer
The finger in portion senses to form electric capacity, and the transparent signal process circuit is filled by the through hole to the electrically conducting transparent panel
Electricity, and obtain the magnitude of voltage that the electric capacity stored after charging terminates and exported.
2. fingerprint recognition panel according to claim 1, it is characterised in that the transparent signal process circuit includes transparent
Matrix is layered line and multiple transparent signal processing units；
The transparent matrix layering line connection transparent signal processing unit and outside scanning circuit；
During work, scanning circuit applies pulse scanning signal to transparent matrix layering line, makes the pulse scanning signal
Transmit successively to transparent signal processing unit each described.
3. fingerprint recognition panel according to claim 2, it is characterised in that the transparent matrix layering line includes power supply
Line, horizontal scanning line and column output line.
4. fingerprint recognition panel according to claim 2, it is characterised in that the transparent signal processing unit includes input
Controlling transistor unit, sampling hold circuit, operational amplification circuit and analog to digital conversion circuit；
The input controlling transistor unit, connects the electrically conducting transparent panel, for being filled to the electrically conducting transparent panel
Electricity；
The sampling hold circuit, operational amplification circuit and analog to digital conversion circuit are sequentially connected；The sampling hold circuit is also
The electrically conducting transparent panel is connected, after charging terminates, the discharge signal of the electrically conducting transparent panel sequentially passes through the sampling and protected
Hold circuit, operational amplification circuit, analog to digital conversion circuit output.
5. fingerprint recognition panel according to claim 2, it is characterised in that the electrically conducting transparent panel and the transparent letter
Number processing unit is corresponded, and is connected by the through hole.
6. fingerprint recognition panel according to claim 2, it is characterised in that multiple electrically conducting transparent panel correspondences one
The transparent signal processing unit, is connected by the through hole.
7. the fingerprint recognition panel according to any one of claim 1 to 6, it is characterised in that the transparent fingerprint sensing battle array
Row one transparent glass substrate of connection.
8. the fingerprint recognition panel according to any one of claim 1 to 6, it is characterised in that the transparent signal processing electricity
Road connects a transparent glass substrate.
9. the fingerprint recognition panel according to any one of claim 1 to 6, it is characterised in that the transparent signal processing electricity
Route thin film transistor (TFT) is built.
10. a kind of fingerprint identification device, it is characterised in that including the fingerprint recognition panel described in any one of claim 1 to 9,
Also include scanning circuit, transparent glass substrate and main control module；
The fingerprint recognition panel, on the transparent glass substrate, and connects the scanning circuit and main control module；
Electrically conducting transparent panel in the fingerprint recognition panel senses to form electricity in response to the finger on the transparent glass substrate
Hold；Scanning circuit described in the master control module controls applies pulse to the transparent signal process circuit in the fingerprint recognition panel
Signal, is charged by the transparent signal process circuit to the electrically conducting transparent panel；It is described transparent after charging terminates
The magnitude of voltage that the signal processing circuit acquisition electric capacity is stored is exported to the main control module, and the main control module is according to described
Finger sensing is identified magnitude of voltage.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611206978.9A CN107066920A (en) | 2016-12-23 | 2016-12-23 | Fingerprint recognition panel and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611206978.9A CN107066920A (en) | 2016-12-23 | 2016-12-23 | Fingerprint recognition panel and device |
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| CN201611206978.9A Pending CN107066920A (en) | 2016-12-23 | 2016-12-23 | Fingerprint recognition panel and device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108345872A (en) * | 2018-03-22 | 2018-07-31 | 深圳力合光电传感股份有限公司 | Fingerprint recognition harvester and system |
| CN108596036A (en) * | 2018-03-27 | 2018-09-28 | 上海思立微电子科技有限公司 | Electronic equipment, fingerprint identification device and its manufacturing method |
| CN110046610A (en) * | 2019-04-28 | 2019-07-23 | 云谷（固安）科技有限公司 | A kind of fingerprint recognition display device and preparation method thereof, display equipment |
| CN111684456A (en) * | 2018-02-07 | 2020-09-18 | 华为技术有限公司 | Fingerprint acquisition device and fingerprint acquisition method |
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