CN104156709A - Fingerprint recognition detection assembly, terminal device and fingerprint verification method - Google Patents
Fingerprint recognition detection assembly, terminal device and fingerprint verification method Download PDFInfo
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- CN104156709A CN104156709A CN201410424156.2A CN201410424156A CN104156709A CN 104156709 A CN104156709 A CN 104156709A CN 201410424156 A CN201410424156 A CN 201410424156A CN 104156709 A CN104156709 A CN 104156709A
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Abstract
The invention provides a fingerprint recognition detection assembly, a terminal device and a fingerprint verification method. The fingerprint recognition detection assembly comprises an area-type fingerprint detection element, a swipe-type fingerprint detection element, a security level acquiring unit and a verification mode switching unit, wherein the security level acquiring unit is used for acquiring the security level of an affair to be verified; the verification mode switching unit is used for starting the area-type fingerprint detection element to perform fingerprint verification when the acquired security level is the first security level and starting the swipe-type fingerprint detection element to perform fingerprint verification when the acquired security level is the second security level, and the first security level is different from the second security level. Through the fingerprint recognition detection assembly, the terminal device and the fingerprint verification method, both swipe-type fingerprint verification and area-type fingerprint verification can be achieved.
Description
Technical field
The disclosure relates to fingerprint recognition field, particularly a kind of fingerprint recognition detection components, the terminal device with fingerprint recognition measuring ability and fingerprint authentication method.
Background technology
Along with the widespread use of portable terminal in people's daily life, from strength to strength, and this diversified function has facilitated user to the function of present portable terminal.But portable terminal, when providing more conveniences for user, has carried too many personal information; if once this portable terminal is lost or is stolen; these information, due to the protection of not being correlated with, are therefore easy to let out, and to user, make troubles.Therefore, on portable terminal, do some settings aspect secret and seem very necessary.How current portable terminal realizes the cryptoguard to its terminal device by forms such as password, figures.
Yet for cipher modes such as password, figures, user need remember password and/or the figure set; In addition, in public, the danger that also exists password to reveal.And in order to improve security, often needing to increase the complexity of password and figure, the difficulty that this has further increased user's memory undoubtedly, causes conflicting between safe and easy-to-use.
Fingerprint is comprised of the rough lines of finger surface skin, is the unique feature of human body, and its complexity can be provided for enough features of identification.Fingerprint recognition is to utilize the feature of fingerprint uniqueness and stability to realize identification, and remembers without user.
Capacitance type fingerprint detects recognizer component and form conducting channel on base material substrate, and when finger contacts with sensor, fingerprint pattern is surveyed and formed to the different capacitances that produce by the projection of fingerprint ridge and the depression of fingerprint paddy.
In prior art, capacitance type fingerprint recognition technology comprises wiping draws formula fingerprint fingerprint identification technology and push type fingerprint identification technology.Wipe to draw a formula fingerprint fingerprint identification technology and there is the features such as cost is lower, area of detection is large, and push type fingerprint identification technology has the features such as the high but area of detection of accuracy of identification is conventionally less.
Summary of the invention
Object of the present disclosure is the terminal device that a kind of fingerprint recognition detection components is provided and has this fingerprint recognition detection components, for realize wiping simultaneously, draws formula fingerprint fingerprint identification function and push type fingerprint identification function; Further, the disclosure also provides a kind of fingerprint authentication method.
On such as devices such as portable terminals, realize fingerprint identification function.
Other characteristics of the present disclosure and advantage become the detailed description by below obviously, or the partly acquistion by practice of the present disclosure.
According to an aspect of the present disclosure, a kind of fingerprint recognition detection components:
A fingerprint recognition detection components, is characterized in that:
Push type fingerprint detection element;
Wipe and draw formula fingerprint detection element;
Level of security acquiring unit, for obtaining the level of security of affairs to be verified;
Verification mode switch unit, while being the first level of security for the level of security getting, enabling described push type fingerprint detection element and carries out fingerprint authentication; And when the level of security getting is the second level of security, enables described wiping and draw formula fingerprint detection element and carry out fingerprint authentication;
Wherein said the first level of security is different from described the second level of security.
In a kind of example embodiment of the present disclosure, the detection width that formula fingerprint detection element is drawn in described wiping is greater than or equal to the detection width of described push type fingerprint detection element.
In a kind of example embodiment of the present disclosure,
Described push type fingerprint detection element is drawn a formula fingerprint detection element with wiping and is comprised a plurality of electrodes;
Partial electrode in described a plurality of electrode is drawn formula fingerprint detection element by described push type fingerprint detection element and wiping and is shared.
In a kind of example embodiment of the present disclosure, described in press fingerprint detection element and comprise:
The ranks matrix being formed by a plurality of the first electrodes and a plurality of the second electrode, its every row comprises a plurality of the first electrodes or a plurality of the second electrode, and every row comprise that in a plurality of the first electrodes and the second electrode and each row, adjacent a pair of the first electrode and the second electrode forms a push type fingerprint identification unit;
In every row of described ranks matrix, the first electrode of each fingerprint identification unit is electrically connected to each other;
In the row that described ranks matrix consists of the second electrode, described the second electrode is electrically connected to each other;
Described wiping is drawn formula fingerprint detection element and is comprised:
The described row being formed by the second electrode;
Third electrode, turns up the soil relative to form a plurality of the first detector gap with the between-line spacing consisting of the second electrode described in each.
In a kind of example embodiment of the present disclosure, the row being formed by the first electrode setting alternate with the row being formed by the second electrode;
In each push type fingerprint identification unit and the first electrode and the second electrode between form the second detector gap; Described the second detector gap is not more than half of adjacent two fingerprint identification unit centre distances in row.
In a kind of example embodiment of the present disclosure, in each fingerprint identification unit row, the first electrode of adjacent fingerprint recognition unit and the second electrode that order is set is contrary.
In a kind of example embodiment of the present disclosure, each is listed as and between described the first electrode, is connected electrode series connection;
Between the overlapping part of the described row being formed by the second electrode and described connecting electrode, be provided with insulation course.
In a kind of example embodiment of the present disclosure, described insulation course comprises silicon dioxide or organic insulation.
In a kind of example embodiment of the present disclosure, described the first electrode is one of the induction electrode of described push type fingerprint detection element or drive electrode, and described the second electrode is another of the induction electrode of described push type fingerprint detection element or drive electrode;
Described the second electrode is the drive electrode that formula fingerprint detection element is drawn in described wiping, and described third electrode is the induction electrode that formula fingerprint detection element is drawn in described wiping.
In a kind of example embodiment of the present disclosure, described the first electrode, the second electrode, third electrode and connecting electrode comprise metallic particles, Graphene, carbon nano-tube or conducting polymer composite.
In a kind of example embodiment of the present disclosure, described wiping is drawn formula fingerprint detection element and is also comprised:
Reference electrode, is oppositely arranged and is positioned at the side contrary with described a plurality of row that consist of the second electrode of described third electrode with described third electrode.
In a kind of example embodiment of the present disclosure, described wiping is drawn formula fingerprint detection element and is also comprised:
Many illusory drive electrodes, described many illusory drive electrodes are arranged side by side and are electrically connected to each other, the side contrary with described third electrode that is arranged at described reference electrode that described many illusory drive electrodes are corresponding with described many drive electrodes.
According to another aspect of the present disclosure, a kind of terminal device with fingerprint recognition measuring ability, comprises any one above-mentioned fingerprint recognition detection components.
According to one side more of the present disclosure, a kind of fingerprint authentication method, is applied to have push type fingerprint detection element simultaneously and wipes the terminal device of drawing formula fingerprint detection element; Described method comprises:
Obtain the level of security of affairs to be verified;
When the level of security getting is the first level of security, enables described push type fingerprint detection element and carry out fingerprint authentication;
When the level of security getting is the second level of security, enables described wiping and draw formula fingerprint detection element and carry out fingerprint authentication;
Wherein said the first level of security is different from described the second level of security.
In the fingerprint recognition detection components providing according to a kind of example embodiment of the present disclosure and the terminal device with this fingerprint recognition detection components, because integrated push type fingerprint detection element is drawn a formula fingerprint detection element with wiping, thereby both can realize wiping, draw formula fingerprint authentication in a fingerprint recognition detection components, also can realize push type fingerprint authentication.According in another example embodiment of the present disclosure, because this push type fingerprint detection element and a wiping stroke formula fingerprint detection element have shared partial electrode structure, therefore can simplify on the one hand the structure of fingerprint recognition detection components, reduce the space hold of fingerprint recognition detection components, all right simplification of flowsheet, reduces preparation cost on the other hand.
Accompanying drawing explanation
By describe its example embodiment in detail with reference to accompanying drawing, above-mentioned and further feature of the present disclosure and advantage will become more obvious.
Fig. 1 is the device end for fingerprint recognition detection of the embodiment of the present invention;
Fig. 2 is the block diagram of a kind of fingerprint recognition detection components in the embodiment of the present invention;
Fig. 3 is the sectional view of a kind of fingerprint recognition detection components in an embodiment of the present invention;
Fig. 4 is the first structural representation of fingerprint recognition detection assembly in the embodiment of the present invention;
Fig. 5 is the second structural representation of fingerprint recognition detection assembly in the embodiment of the present invention;
Fig. 6 is the third structural representation of fingerprint recognition detection assembly in the embodiment of the present invention;
Fig. 7 is the 4th kind of structural representation of fingerprint recognition detection assembly in the embodiment of the present invention;
Fig. 8 is the process flow diagram of fingerprint authentication method in the embodiment of the present invention.
Description of reference numerals:
3,3 ' fingerprint recognition detection components
7 protective seams
30 driving circuits
31 third electrodes
32 second electrodes
33 reference electrodes
34 illusory drive electrodes
35 first detector gap
36 the 3rd detector gap
37 difference filters
38 differential amplifiers
39 wires
40 first electrodes
41 connecting electrodes
42 second detector gap
H finger sliding direction
D distance
Embodiment
Referring now to accompanying drawing, example embodiment is more fully described.Yet example embodiment can be implemented in a variety of forms, and should not be understood to be limited to embodiment set forth herein; On the contrary, provide these embodiments to make the disclosure by comprehensive and complete, and the design of example embodiment is conveyed to those skilled in the art all sidedly.Identical in the drawings Reference numeral represents same or similar structure, thereby will omit their detailed description.
In addition, described feature, structure or characteristic can be combined in one or more embodiment in any suitable manner.In the following description, thus provide many details to provide fully understanding embodiment of the present disclosure.Yet, one of skill in the art will appreciate that and can put into practice technical scheme of the present disclosure and there is no one or more in described specific detail, or can adopt other method, constituent element, material etc.In other cases, be not shown specifically or describe known configurations, material or operation to avoid fuzzy each side of the present disclosure.
Fig. 1 illustrates the device end according to example embodiment with fingerprint recognition detection components.Fingerprint recognition detection components can be located at non-display area S region wherein, also can be located at the viewing area on S region.
Fig. 2 is according to the structural representation of the fingerprint recognition detection components of example embodiment, and it mainly comprises push type fingerprint detection element 3b, wipes and draw formula fingerprint detection element 3a, level of security acquiring unit 3c and verification mode switch unit 3d.
Wherein, wipe stroke formula fingerprint detection element 3a and can wipe thereon in the process of drawing user, obtain line by line user's finger print information, be finally combined into complete finger print information.The area that obtains user fingerprints information due to wiping stroke formula fingerprint detection element 3a is its detection width and the amassing of user's wiping stroke length, so can obtain abundant finger print information.In this example embodiment, the detection width that formula fingerprint detection element 3a is drawn in described wiping can be greater than or equal to the detection width of described push type fingerprint detection element 3b.Certainly, in this example embodiment not as limit.In addition, because the finger print information obtaining is abundant, therefore wipe stroke formula fingerprint detection element 3a and can adopt the mode of comparison unique point to verify, and without image ratio pair.
In the process that push type fingerprint detection element 3b can press thereon user, disposable or line by line scan and obtain user's finger print information, and without user's moveable finger.The area that push type fingerprint detection element 3b obtains user fingerprints information is not more than the area of push type fingerprint detection element 3b, like this, the finger print information that push type fingerprint detection element 3b obtains may be less, therefore, possibly cannot adopt the mode of comparison unique point to verify, and need image ratio pair, need more computing time.
Level of security acquiring unit 3c is for obtaining the level of security of affairs to be verified; Verification mode switch unit 3d, for when the level of security getting is the first level of security, enables described push type fingerprint detection element 3b and carries out fingerprint authentication; And when the level of security getting is the second level of security, enables described wiping and draw formula fingerprint detection element 3a and carry out fingerprint authentication; Wherein said the first level of security is different from described the second level of security.
In above-mentioned fingerprint recognition detection components, because integrated push type fingerprint detection element 3b draws a formula fingerprint detection element 3a with wiping, and be provided with level of security acquiring unit 3c and verification mode switch unit 3d, can in a fingerprint recognition detection components, both can realize so on the one hand wiping and draw formula fingerprint authentication, also push type fingerprint authentication can be realized, different fingerprint authentication modes can be provided according to different level of securitys on the other hand.
Further, described push type fingerprint detection element is drawn a formula fingerprint detection element with wiping and is comprised a plurality of electrodes, for example, can comprise drive electrode and induction electrode etc.; In a kind of example embodiment of the present disclosure, the partial electrode in described a plurality of electrodes is drawn formula fingerprint detection element by described push type fingerprint detection element and wiping and is shared.For example common drive electrode or shared induction electrode etc.Because this push type fingerprint detection element and a wiping stroke formula fingerprint detection element have shared partial circuit, therefore can simplify on the one hand the structure of fingerprint recognition detection components, reduce the volume of fingerprint recognition detection components, all right simplification of flowsheet, reduces preparation cost on the other hand.
With an example embodiment, above-mentioned fingerprint recognition detection components 3 is further detailed below.
As shown in Fig. 3-Fig. 7, the fingerprint recognition detection components 3 in this example embodiment comprises push type fingerprint detection element simultaneously and wipes a stroke formula fingerprint detection element.In addition can also comprise other structures such as protective seam 7, lead-in wire, fingerprint recognition chip and main circuit board.For example:
As shown in Figure 4, in this example embodiment, described push type fingerprint detection element comprises the ranks matrix being comprised of a plurality of the first electrodes 40 and a plurality of the second electrode 32, its every row comprises a plurality of the first electrodes 40 or a plurality of the second electrode 32, every row comprise that in a plurality of the first electrodes 40 and the second electrode 32 and each row, adjacent a pair of the first electrode and the second electrode can form a basic capacitor, and each this capacitor is a simple fingerprint identification unit.All described push type fingerprint identification unit matrix distribution.In every row of described ranks matrix, the first electrode 40 of each fingerprint identification unit is electrically connected to each other; In the row that described ranks matrix consists of the second electrode 40, described the second electrode 40 is electrically connected to each other.
The induction electrode that this first electrode 40 can be used as push type fingerprint detection element also can be used as the drive electrode of push type fingerprint detection element.In this example embodiment, described the first electrode 40 is as the induction electrode of push type fingerprint detection element.Accordingly, the drive electrode of described push type fingerprint detection element is described the second electrode 32.Described in each, the first electrode 40 forms the second detector gap 42 respectively and between the second adjacent electrode 32.
Further, if the first electrode 40 is connected with a lead-in wire respectively with the second electrode 32 described in each, can increase considerably the complexity of circuit; Therefore, in this example embodiment, each is listed as between described the first electrode 40 and is connected electrode 41 series connection, and last same row the first electrode 40 is connected to a lead-in wire.Described the first electrode 40 and connecting electrode 41 in each row can also can be respectively independently structure for integral type structure.Same, series connection between the second electrode 32, is finally connected to a lead-in wire with a line the second electrode 32 described in every a line.In this example embodiment, described the second electrode 32 in every a line can be integral type structure, and certainly in other example embodiment, it also can be respectively independently structure.
Owing to having overlapping region between above-mentioned connecting electrode 41 and the row that formed by the second electrode 32, therefore, between the described row being formed by the second electrode 32 and the overlapping part of described connecting electrode 41, be provided with insulation course, thus realize the first electrode 40 and the row that formed by the second electrode 32 between electrical isolation.This insulation course can comprise silicon dioxide or organic insulation etc.In concrete enforcement, can be the described row being formed by the second electrode 32 on described connecting electrode 41, can be also the described row being formed by the second electrode 32 under described connecting electrode 41, in this example embodiment not as limit.
Because the drive electrode (the second electrode 32) of a fingerprint identification unit on column direction is adjacent with the induction electrode (the first electrode 40) of another fingerprint identification unit, therefore may impact the induction electrode of this another fingerprint identification unit, cause being difficult to list from corresponding induction electrode the signal of reading and accurately judge fingerprint image.This problem can be greater than above-mentioned the second detector gap 42 by half that makes capacitor type fingerprint identification unit centre distance D adjacent on column direction and be resolved; As shown in Figure 5, even the sensing element of a fingerprint identification unit relatively away from the sensing element of other fingerprint identification unit.
In addition, the problems referred to above can also be as shown in Figure 6, by the first electrode 40 described in every two row being located at described in two row, between the second electrode 32, solves.This be because, the first electrode 40 of each fingerprint identification unit is adjacent with the first electrode 40 of adjacent fingerprint recognition unit, the second electrode 32 is adjacent with the second electrode 32 of another adjacent fingerprint recognition unit.Like this, due to the first electrode 40 in each fingerprint identification unit only with this unit in the second electrode 32 adjacent, and can be not adjacent with another second electrode 32, therefore, can not produce the problem that the first electrode 40 in different units and the second electrode 32 disturb, be conducive to the unit that accurate location produces fingerprint image.
As shown in Fig. 4-Fig. 7, formula fingerprint detection element is drawn in described wiping and described push type fingerprint detection element shares the described row consisting of the second electrode 32; The third electrode 31 that formula fingerprint detection element also comprises vertical setting (certainly, it also can become specific angle) is drawn in described wiping.In this example embodiment, third electrode 31 can be as wiping the induction electrode of drawing formula fingerprint detection element, and it is specifically as follows a strip shaped electric poles.The row consisting of the second electrode 32 can be as wiping the drive electrode of drawing formula fingerprint detection element.The row consisting of the second electrode 32 described in each is relative to form a plurality of the first detector gap 35 at interval with described third electrode 31 respectively.The row that each consists of the second electrode 32 and described third electrode 31 can form a basic capacitor, and each this capacitor is a simple fingerprint identification unit.
Although a plurality of electrodes of the fingerprint recognition detection components 3 shown in Fig. 4-Fig. 6 provide satisfied performance, wiping wherein draws that formula fingerprint detection element is subject to intercoupling and the noise of being assembled by human body and the impact of the interference that is coupled from the major part of passing through to point of finger ridge outside the first detector gap 35.In order to optimize the accuracy of fingerprint recognition, eliminate the coupled interference from the finger ridge part outside the first detector gap 35, eliminate differential noise, figure 6 illustrates the fingerprint recognition detection components 3 of improvement ' a plurality of electrodes.
With in Fig. 4-Fig. 6 in the same manner, the wiping in Fig. 7 is drawn formula fingerprint detection element and is comprised a plurality of row that consist of the second electrode 32 and third electrode 31.The row consisting of the second electrode 32 is parallel to each other in fact, and is connected to driving circuit 30.Third electrode 31 is arranged perpendicular to the row consisting of the second electrode 32 in fact.Each row consisting of the second electrode 32 is spaced apart from check-out console by the first detector gap 35.Therefore, fingerprint recognition detection components 3 ' a plurality of electrodes comprise the row that formed by the second electrode 32 at each and linearly aligned the first detector gap 35 between third electrode 31.Driving circuit 30 encourages to drive signal sequence the row consisting of the second electrode 32.
Wipe a stroke formula fingerprint detection element and can also comprise reference electrode 33 and many illusory drive electrodes 34 (referring to Fig. 7), reference electrode 33 is oppositely arranged and is positioned at a side contrary with a plurality of row that consist of the second electrode 32 of third electrode 31 with third electrode 31.Many illusory drive electrode 34 is arranged side by side and is electrically connected to each other, and many illusory drive electrodes 34 and a plurality of row that consist of the second electrode 32 are arranged on a side contrary with third electrode 31 of reference electrode 33 accordingly.
Wipe a stroke formula fingerprint detection element and also comprise the reference electrode 33 that can be parallel in fact third electrode 31 and separate with third electrode 31.Reference electrode 33 is positioned at a side of the third electrode 31 relative with the row consisting of the second electrode 32, and thereby separates with the row consisting of the second electrode 32 by the distance larger than third electrode 31.Reference electrode 33 should be by a segment distance and in the ranks separating of consisting of the second electrode 32, and this distance is enough to eliminate noise and intercoupling reference are provided for common-mode noise.In some embodiments, reference electrode 33 and third electrode 31 can have equal length and width, and can be arranged in parallel abreast.Reference electrode 33 is similar to the such sensing ridge/paddy signal of third electrode 31, but its remitted its fury in fact.Because reference electrode 33 and third electrode 31 be interval and have similar size closely, two electrodes have produced noise and spur signal about equally.In signal from reference electrode 33, deduct signal on third electrode 31 and produced the proportional ridge/paddy of the difference signal between the signal to sensing, due to the relative spacing of two electrodes from the first detector gap 35, this is significant.But, equate that noise and the spur signal of coupling can be eliminated by deducting two signals on electrode.
Third electrode 31 and reference electrode 33 are coupled to differential amplifier 38 by difference filter 37.Especially, the forward that third electrode 31 can be coupled to differential amplifier 38 by difference filter 37 is inputted, and reference electrode 33 can be coupled to by difference filter 37 the reverse input of differential amplifier 38.Differential amplifier 38 deducts the signal on third electrode 31 and reference electrode 33 by electronics mode, and noise and spur signal are eliminated.
Wipe drawing a formula fingerprint detection element can also comprise and reference electrode 33 illusory driving circuit 30 at interval.As shown in Figure 6, illusory driving circuit 30 can comprise parallel in fact illusory drive electrode 34, and itself and reference electrode 33 are placed vertically and are spaced apart with reference electrode 33 by the 3rd detector gap 36.Parallel illusory drive electrode 34 is electrically connected to mutually by wire 39, and is connected to driving circuit 30 by wire 39.In some embodiments, the arrangement with respect to the row being formed by the second electrode 32 of third electrode 31 with respect to the arrangement coupling of the parallel illusory drive electrode 34 of reference electrode 33.Therefore, the size of the spacing between the width of parallel illusory drive electrode 34, parallel illusory drive electrode 34 and the 3rd detector gap 36 can be respectively with the width of the row being formed by the second electrode 32, the row that formed by the second electrode 32 between spacing and the size of the first detector gap 35 identical.
Illusory driving circuit 30 can be connected to reference potential at fingerprint image during sensing, for example ground connection.Therefore, in any time moment of fingerprint image sensing, one in the row consisting of the second electrode 32 can be encouraged by driven signal, and the remaining row consisting of the second electrode 32 is coupled to reference potential, for example ground connection.For wiping, draw the example that formula fingerprint detection element has the individual row consisting of the second electrode 32, at any given time, all row that consist of the second electrode 32 one in the individual row consisting of the second electrode 32 are connected to ground connection, and any given time during image sensing, all parallel illusory drive electrode 34 of illusory driving circuit 30 is connected to ground connection.Utilize this layout, the noise on earth conductor is coupled to third electrode 31 and reference electrode 33 in fact of equal valuely.The noise of coupling is subtracted by differential amplifier 38, thereby and is eliminated.The fingerprint image signal of being concerned about is detected between third electrode 31 and reference electrode 33, and by differential amplifier 38, is not eliminated.In the present embodiment, third electrode 31, the row consisting of the second electrode 32, reference electrode 33 and illusory drive electrode 34 can utilize traditional deposition, etching and photoetching technique to form.
Generally, the size of the first detector gap 35 is less than the ridge spacing of typical fingerprint, and general in the scope of 25 to 50 μ m.In the present embodiment, pitch between the adjacent row consisting of the second electrode 32 is equal to each other and within the scope of 50 to 60 μ m, the width of the row consisting of the second electrode 32 is equal to each other and within the scope of 20 to 45 μ m, and the size of the first detector gap 35 is equal to each other and within the scope of 20 to 40 μ m.
Wipe in an example drawing formula fingerprint detection element, the row consisting of the second electrode 32 has the width of 25 μ m (micron), and the spacing between the adjacent row consisting of the second electrode 32 is 25 μ m.The size of the first detector gap 35 is 25 μ m.Spacing between third electrode 31 and reference electrode 33 is 25 μ m.The width of the parallel illusory drive electrode 34 of illusory driving circuit 30 is that the spacing between 25 μ m and adjacent illusory drive electrode 34 is 25 μ m.The size of the 3rd detector gap 36 is 32 μ m.The process parameter here, as just example, does not limit about scope of the present invention.
The material of above-mentioned the first electrode 40, the second electrode 32, third electrode 31 and connecting electrode 41 can be identical, also can be different.The material that forms the first electrode 40, the second electrode 32, third electrode 31 and connecting electrode 41 can be selected from ITO (tin indium oxide) or metal simple-substance particle as gold, silver, copper, zinc, aluminium one or more, metal alloy conductive material, Graphene, carbon nano-tube material, nanometer conductive material be as Nano Silver etc., but the disclosure is not limited to this.
According to an example embodiment, the first electrode 40, the second electrode 32 and third electrode 31 can comprise conductive grid.By adopting conductive grid, reduced cost, but still can reach the good result of fingerprint recognition.In addition, fingerprint detection recognizer component can also comprise lead-in wire (not shown), and wipe to draw formula fingerprint detection element and push type fingerprint detection element and be connected, and for fingerprint detection element is connected to external circuit, fingerprint recognition circuit for example.Lead-in wire can comprise conductive grid equally.
Further, a kind of terminal device with fingerprint recognition measuring ability is also provided in this example embodiment, this terminal device has a display screen and any one above-mentioned fingerprint recognition detection components, and this display screen can be also non-touch screen for touch screen.By the fingerprint detection recognizer component in this example embodiment, this terminal device both can have been realized wiping and draw a formula fingerprint fingerprint recognition, also can realize push type fingerprint recognition.Hold intelligiblely, the fingerprint recognition detection components in this example embodiment can be applied to not have the terminal device of display screen equally, therefore not as limit.
In view of thering are formula fingerprint fingerprint identification technology and the two kinds of different fingerprint recognition modes of push type fingerprint identification technology of drawing of wiping.Therefore, also provide accordingly a kind of fingerprint authentication method in this example embodiment, this fingerprint authentication method is applied to the above-mentioned terminal device of wiping stroke formula fingerprint detection element and push type fingerprint detection element that simultaneously has; As shown in Figure 8, it mainly comprises step:
S11. obtain the level of security of affairs to be verified;
S12-S13. when the level of security getting is the first level of security, enables described wiping and draw formula fingerprint detection element and carry out fingerprint authentication;
S14-S15. when the level of security getting is the second level of security, enables described push type fingerprint detection element and carry out fingerprint authentication;
Wherein said the first level of security is different from described the second level of security.
Take mobile-phone payment as example, and user is in carrying out mobile-phone payment process, and after input number of deals, system can judge that this transaction is for small amount payment affairs or wholesale payment transaction.In this transaction of judgement, when the small amount payment affairs, the level of security that obtains current affairs is the first level of security, now can enable described wiping by above-mentioned control module and draw formula fingerprint detection element and carry out fingerprint authentication.When this transaction of judgement is wholesale payment transaction, the level of security that obtains current affairs is the second level of security, now can enable described push type fingerprint detection element by above-mentioned control module and carry out fingerprint authentication.
Hold intelligiblely, the level of security of the described affairs to be verified in this example embodiment can set in advance as required; For example, the level of security that sets in advance the affairs such as release starting-up interface, startup camera is the first level of security, sets in advance and opens photograph album, opens specified folder and check that the level of security of the affairs such as note record is second level of security etc.
As from the foregoing, the fingerprint authentication method providing by this example embodiment, when carrying out the lower transaction validation of level of security, can draw a formula fingerprint detection element and complete by wiping; When carrying out the higher transaction validation of level of security, can be completed by push type fingerprint detection element.
The disclosure is described by above-mentioned related embodiment, yet above-described embodiment is only for implementing example of the present disclosure.Must be pointed out that, the embodiment having disclosed does not limit the scope of the present disclosure.On the contrary, the change of doing within not departing from spirit and scope of the present disclosure and retouching, all belong to scope of patent protection of the present disclosure.
Claims (15)
1. a fingerprint recognition detection components, is characterized in that:
Push type fingerprint detection element;
Wipe and draw formula fingerprint detection element;
Level of security acquiring unit, for obtaining the level of security of affairs to be verified;
Verification mode switch unit, while being the first level of security for the level of security getting, enabling described push type fingerprint detection element and carries out fingerprint authentication; And when the level of security getting is the second level of security, enables described wiping and draw formula fingerprint detection element and carry out fingerprint authentication;
Wherein said the first level of security is different from described the second level of security.
2. fingerprint recognition detection components according to claim 1, is characterized in that, the detection width that formula fingerprint detection element is drawn in described wiping is greater than or equal to the detection width of described push type fingerprint detection element.
3. fingerprint recognition detection components according to claim 1, is characterized in that:
Described push type fingerprint detection element is drawn a formula fingerprint detection element with wiping and is comprised a plurality of electrodes;
Partial electrode in described a plurality of electrode is drawn formula fingerprint detection element by described push type fingerprint detection element and wiping and is shared.
4. fingerprint recognition detection components according to claim 3, is characterized in that, described in press fingerprint detection element and comprise:
The ranks matrix being formed by a plurality of the first electrodes and a plurality of the second electrode, its every row comprises a plurality of the first electrodes or a plurality of the second electrode, and every row comprise that in a plurality of the first electrodes and the second electrode and each row, adjacent a pair of the first electrode and the second electrode forms a push type fingerprint identification unit;
In every row of described ranks matrix, the first electrode of each fingerprint identification unit is electrically connected to each other;
In the row that described ranks matrix consists of the second electrode, described the second electrode is electrically connected to each other;
Described wiping is drawn formula fingerprint detection element and is comprised:
The described row being formed by the second electrode;
Third electrode, turns up the soil relative to form a plurality of the first detector gap with the between-line spacing consisting of the second electrode described in each.
5. fingerprint recognition detection components according to claim 4, is characterized in that, the row consisting of the first electrode setting alternate with the row consisting of the second electrode;
In each push type fingerprint identification unit and the first electrode and the second electrode between form the second detector gap; Described the second detector gap is not more than half of adjacent two fingerprint identification unit centre distances in row.
6. fingerprint recognition detection components according to claim 4, is characterized in that, in each fingerprint identification unit row, the first electrode of adjacent fingerprint recognition unit and the second electrode that order is set is contrary.
7. fingerprint recognition detection components according to claim 4, is characterized in that, each is listed as and between described the first electrode, is connected electrode series connection;
Between the overlapping part of the described row being formed by the second electrode and described connecting electrode, be provided with insulation course.
8. fingerprint recognition detection components according to claim 7, is characterized in that, described insulation course comprises silicon dioxide or organic insulation.
9. fingerprint recognition detection components according to claim 4, it is characterized in that, described the first electrode is one of the induction electrode of described push type fingerprint detection element or drive electrode, and described the second electrode is another of the induction electrode of described push type fingerprint detection element or drive electrode;
Described the second electrode is the drive electrode that formula fingerprint detection element is drawn in described wiping, and described third electrode is the induction electrode that formula fingerprint detection element is drawn in described wiping.
10. fingerprint recognition detection components according to claim 4, is characterized in that, described the first electrode, the second electrode, third electrode and connecting electrode comprise metallic particles, Graphene, carbon nano-tube or conducting polymer composite.
11. fingerprint recognition detection components according to claim 4, is characterized in that, described wiping is drawn formula fingerprint detection element and also comprised:
Reference electrode, is oppositely arranged and is positioned at the side contrary with described a plurality of row that consist of the second electrode of described third electrode with described third electrode.
12. fingerprint recognition detection components according to claim 11, is characterized in that, described wiping is drawn formula fingerprint detection element and also comprised:
Many illusory drive electrodes, described many illusory drive electrodes are arranged side by side and are electrically connected to each other, the side contrary with described third electrode that is arranged at described reference electrode that described many illusory drive electrodes are corresponding with described many drive electrodes.
13. fingerprint recognition detection components according to claim 4, is characterized in that, pattern at least a portion that described the first electrode, the second electrode and third electrode form consists of conductive grid.
14. 1 kinds of terminal devices with fingerprint recognition measuring ability, comprise the fingerprint recognition detection components as described in any one in claim 1-13.
15. 1 kinds of fingerprint authentication methods, are applied to have push type fingerprint detection element simultaneously and wipe the terminal device of drawing formula fingerprint detection element; It is characterized in that, described method comprises:
Obtain the level of security of affairs to be verified;
When the level of security getting is the first level of security, enables described push type fingerprint detection element and carry out fingerprint authentication;
When the level of security getting is the second level of security, enables described wiping and draw formula fingerprint detection element and carry out fingerprint authentication;
Wherein said the first level of security is different from described the second level of security.
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