CN106326859A - Fingerprint identification driving circuit, array substrate, display device and fingerprint identification method - Google Patents
Fingerprint identification driving circuit, array substrate, display device and fingerprint identification method Download PDFInfo
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- CN106326859A CN106326859A CN201610710992.6A CN201610710992A CN106326859A CN 106326859 A CN106326859 A CN 106326859A CN 201610710992 A CN201610710992 A CN 201610710992A CN 106326859 A CN106326859 A CN 106326859A
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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
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Abstract
An embodiment of the invention provides a fingerprint identification driving circuit, an array substrate, a display device and a fingerprint identification method, wherein the fingerprint identification driving circuit, the array substrate, the display device and the fingerprint identification method relate to the field of displaying technology and can prevent problems of relatively large wiring space caused by corners of first scanning wires in a non-displaying area. The fingerprint identification driving circuit comprises a line driving subcircuit which is used for inputting a scanning signal to n lines of first scanning wires. The n lines of first scanning wires are divided into m signal wire sets, wherein each signal wire set comprises s first scanning wires. The fingerprint identification driving circuit comprises m fingerprint line driving units. The fingerprint line driving units are distributed in an extending line direction of the first scanning wires. Each fingerprint line driving unit is connected with a signal wire set. The fingerprint line driving unit is connected with a first clock signal end and a fingerprint starting signal end. The fingerprint line driving unit is used for inputting the signal of the first clock signal end to the first scanning wire in the signal wire set through controlling by the fingerprint starting signal end. The fingerprint identification driving circuit, the array substrate, the display device and the fingerprint identification method are used for fingerprint identification.
Description
Technical field
The present invention relates to Display Technique field, particularly relate to a kind of fingerprint recognition drive circuit, array base palte, display device
And fingerprint identification method.
Background technology
Somatic fingerprint has uniqueness and an invariance, and therefore to have safety good for fingerprint identification technology, and reliability is high, uses
Feature simply and easily so that fingerprint identification technology is widely used in protecting the various fields of personal information security, especially
Display Technique field, such as mobile phone, notebook computer, the computer of flat board, digital camera etc..
On this basis, for convenience and the multiformity of fingerprint recognition, can arrange being used for real fingerprint recognition element
Viewing area in display floater.As it is shown in figure 1, multiple fingerprint recognition elements 100 are arranged in display floater 101 in matrix form
Viewing area A in, to reach the purpose of full frame fingerprint recognition.In the case, every a line fingerprint recognition element 100 connects one
Bar the first scan line G_f, for opening fingerprint recognition element 100 line by line, so that finger print information is acquired, and every string fingerprint
Recognition component 100 connects one and reads holding wire RL, exports extremely for the fingerprint identification information collected by stricture of vagina recognition component 100
Control chip 102.
So that above-mentioned first scan line G_f can be progressively scanned by control chip 102, above-mentioned first scan line
G_f needs to be connected to control chip 102, and owing to the first scan line G_f is horizontally disposed with, the most each the first scan line G_f is equal
The non-display area beyond the A of viewing area is needed to bend, so that the first scan line G_f is by along horizontal cable run direction
Wiring is changed to connect up along vertical direction of routing, and control chip 102 that is final and that be arranged at (or top) below the A of viewing area
It is connected.
But, along with the increase of display floater 101 size, in order to realize above-mentioned full frame fingerprint recognition, the first scan line G_f
Also it is continuously increased so that all of first scan line G_f is required to arrange turning B at non-display area, to carry out wiring direction
Change.And too much turning B quantity can take bigger wiring space, thus add the wiring space of non-display area,
It is unfavorable for the design requirement of narrow frame.
Summary of the invention
Embodiments of the invention provide a kind of fingerprint recognition drive circuit, array base palte, display device and fingerprint recognition side
Method.It can be avoided that the first scan line arranges turning at non-display area, the problem causing taking bigger wiring space.
For reaching above-mentioned purpose, embodiments of the invention adopt the following technical scheme that
The embodiment of the present invention provides a kind of fingerprint recognition drive circuit, including for the input scanning of n row the first scan line
The row cutting electronic circuit of signal；Described n row the first scan line is divided into m signal line group, and each described signal line group includes s
First scan line described in bar；Wherein, s × m=n, s, m, n are positive integer；Arbitrary first scan line is divided to unique signal lines
Group；Described fingerprint recognition drive circuit includes m fingerprint row cutting unit, and described fingerprint row cutting cell distribution is in described first
On the extended line direction of scan line, and each described fingerprint row cutting unit and a described signal line group are connected, described
Fingerprint row cutting unit is also connected with the first clock signal terminal and fingerprint initial signal end, and described fingerprint row cutting unit is used for
Under the control of described fingerprint initial signal end, the signal of described first clock signal terminal is inputted line by line to this signal line group
Each the first scan line on.
Preferably, each described fingerprint row cutting unit includes s the fingerprint shift LD subelement cascaded, every one-level
The signal output part of fingerprint shift register cell connects the first scan line described in a line；Each described fingerprint row cutting unit
In first order fingerprint shift LD subelement input connect described fingerprint initial signal end, upper level fingerprint shift LD
The signal output part of subelement connects the signal input part of next stage fingerprint shift LD subelement, and the displacement of afterbody fingerprint is posted
The signal output part depositing subelement connects reset signal end.
Preferably, described row cutting electronic circuit also includes initial signal driver element；Described initial signal driver element is even
Connect second clock signal end, drive signal end, and be connected with the fingerprint initial signal end of m fingerprint row cutting unit, described
Initial signal driver element is under the control of described driving signal end, by the most defeated for the signal of described second clock signal end
Enter to described fingerprint initial signal end.
Preferably, described initial signal driver element includes the initial signal shift LD subelement of multiple cascade, each
The signal output part of level initial signal shift LD subelement connects a described fingerprint initial signal end；First order initial signal
The signal input part of shift LD subelement connects described driving signal end, the letter of upper level initial signal shift LD subelement
Number outfan connects the signal input part of next stage initial signal shift LD subelement, afterbody initial signal shift LD
The signal output part of subelement connects reset signal end.
Preferably, finger prints processing electronic circuit is also included；Described finger prints processing electronic circuit connects described driving signal end, is used for
To described driving signal end input drive signal；And described finger prints processing electronic circuit is also connected with reset signal end, for described
Reset signal end input reset signal.
Preferably, finger prints processing electronic circuit is also included；Described finger prints processing electronic circuit connects fingerprint initial signal end, is used for
Fingerprint initial signal is inputted to described fingerprint initial signal end.
Preferably, described fingerprint shift LD subelement include pull up control module, pull-up module, drop-down control module,
Drop-down module and reseting module；Described pull-up control module connects the first voltage end, signal input part and pull-up node, uses
Under the control at described signal input part, the voltage of described first voltage end is exported to described pull-up node；Described pull-up
Module connects described pull-up node, the first clock signal terminal and signal output part, is used under the control of described pull-up node,
The signal of described first clock signal terminal is exported to described signal output part；Described drop-down control module connects the second voltage
End, tertiary voltage end, described pull-up node and pull-down node, under the control of described second voltage end, by described the
The signal output extremely described pull-down node of two voltage ends, or, under the control of described pull-up node, by described drop-down joint
The current potential of point is pulled down to the current potential of described tertiary voltage end；Described drop-down module connect described pull-down node, described pull-up node,
Described signal output part and described tertiary voltage end, under the control of described pull-down node, by described pull-up node with
And the current potential of described signal output part is pulled down to the current potential of described tertiary voltage end；Described reseting module connects described reset signal
End, described pull-up node and described 4th voltage end, under the control of described reset signal end, by described pull-up node
Current potential be pulled down to the current potential of described 4th voltage end.
Preferably, described fingerprint shift LD subelement also includes initialization module；Described initialization module connects described
Signal output part, initialization voltage end and described tertiary voltage end, under the control of described initialization voltage end, by institute
The current potential stating signal output part is pulled down to the current potential of described tertiary voltage end.
The another aspect of the embodiment of the present invention, it is provided that a kind of array base palte, knows including any one fingerprint as above
Other drive circuit.
The another aspect of the embodiment of the present invention, it is provided that a kind of display device, including array base palte as described above.
The embodiment of the present invention provides a kind of fingerprint identification method, including: position of touch is detected；According to described touch-control
Position, by the first scan line in the signal line group that fingerprint row cutting unit pair is connected with described fingerprint row cutting unit by
Row input scanning signal, to open the fingerprint recognition element of described touch position；Described fingerprint recognition element is to finger print information
It is acquired, and collection result is exported to reading holding wire.
Preferably, when position of touch is corresponding with the position of jth signal line group, wherein, j≤m, j are positive integer；?
In the case of row cutting electronic circuit also includes initial signal driver element, described according to described position of touch, driven by fingerprint row
The first scan line in the signal line group that moving cell pair is connected with described fingerprint row cutting unit inputs scanning signal line by line, with
The fingerprint recognition element opening described touch position includes: described initial signal driver element is driving the control of signal end
Under, the signal of second clock signal end is sequentially input the first to jth fingerprint initial signal end；-1 fingerprint of the first to jth
Row cutting unit, inputs to the letter being connected with described fingerprint row cutting unit line by line by the signal of described first clock signal terminal
In each the first scan line in number line group；Wherein, the first clock signal terminal output Non-scanning mode signal, so that non-touch-control position
The fingerprint recognition element putting place is closed；Jth fingerprint row cutting unit, inputs line by line by the signal of described first clock signal terminal
In each the first scan line to the signal line group being connected with described fingerprint row cutting unit；Wherein, the first clock letter
Number end export described scanning signal so that touch position fingerprint recognition element open.
The embodiment of the present invention provides a kind of fingerprint recognition drive circuit, array base palte, display device and fingerprint identification method.
This fingerprint recognition circuit includes for the row cutting electronic circuit to n row the first scan line input scanning signal.Above-mentioned n row first is swept
Retouching line and be divided into m signal line group, each signal line group includes s bar the first scan line.Wherein, s × m=n, s, m, n are just
Integer, arbitrary first scan line is divided to unique signal lines group.Additionally, this fingerprint recognition drive circuit includes m fingerprint row
Driver element, this fingerprint row cutting cell distribution is on the extended line direction of the first scan line, and each fingerprint row cutting list
Unit is connected with a signal line group.On this basis, fingerprint row cutting unit also initiates with the first clock signal terminal and fingerprint
Signal end is connected, and this fingerprint row cutting unit is under the control of fingerprint initial signal end, by the first clock signal terminal
In each the first scan line that signal inputs line by line to this signal line group.
So, owing to fingerprint row cutting unit can be under the control of fingerprint initial signal end, by the first clock letter
In each first scan line inputting line by line to this signal line group of signal of number end.Therefore, it can by fingerprint row cutting
Unit directly can input scanning signal, and this fingerprint row cutting for its first scan line being connected in signal line group line by line
Cell distribution is on the extended line direction of the first scan line, so that the first scan line still can keep at non-display area
Original wiring direction, it is not necessary to turning is set because changing wiring direction, thus the problem being unfavorable for narrow frame design.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
The structural representation of a kind of display floater that Fig. 1 provides for prior art；
Fig. 2 shows for a kind of structure of the fingerprint recognition drive circuit being arranged at non-display area that the embodiment of the present invention provides
It is intended to；
Fig. 3 is the fingerprint recognition element mode position view in the viewing area shown in Fig. 2；
Fig. 4 is the operation principle schematic diagram of fingerprint recognition component in Fig. 3；
Fig. 5 is the concrete structure schematic diagram of fingerprint row cutting unit in Fig. 2；
The another kind of structure of the fingerprint recognition drive circuit being arranged at non-display area that Fig. 6 provides for the embodiment of the present invention
Schematic diagram；
Another structure of the fingerprint recognition drive circuit being arranged at non-display area that Fig. 7 provides for the embodiment of the present invention
Schematic diagram；
Fig. 8 is the concrete structure schematic diagram of initial signal driver element in Fig. 7；
Fig. 9 is the concrete knot of the fingerprint shift LD subelement in Fig. 5 or the initial signal shift LD subelement in Fig. 8
Structure schematic diagram；
A kind of fingerprint identification method flow chart that Figure 10 provides for the embodiment of the present invention；
Figure 11 is the sequential chart of each control signal in the fingerprint identification method shown in Figure 10；
Figure 12 is the sequential chart of control signal in step S102 shown in Figure 10.
Reference:
10-signal line group；20-row cutting electronic circuit；201-fingerprint row cutting unit；2011-pulls up control module；
2012-pulls up module；The drop-down control module of 2013-；The drop-down module of 2014-；2015-reseting module；2016-initialization module；
30-finger prints processing electronic circuit；40-initial signal driver element；50-shows driver element；100-stricture of vagina recognition component；101-shows
Panel；102-control chip；111-finger；A-viewing area；B-turning；C-position of touch；D-drives signal end；STV-fingerprint
Initial signal end；CLK1-the first clock signal terminal；CLK2-second clock signal end；CLK3-the 3rd clock signal terminal；During CK-
Clock signal input part；G_f-the first scan line；G_d-the second scan line；RL-reads holding wire；RS_f-fingerprint shift LD
Unit；RS_q-initial signal shift LD subelement.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
The embodiment of the present invention provides a kind of fingerprint recognition drive circuit, as in figure 2 it is shown, include for scanning to n row first
The row cutting electronic circuit 20 of line (G_f1, G_f2 ... G_fn) input scanning signal.
On this basis, n row the first scan line can be drawn (G_f1, G_f2 ... G_fn) and be divided into m signal line group 10,
Each signal line group 10 includes s bar the first scan line G_f.Wherein, s × m=n, s, m, n are positive integer.And arbitrary first
Scan line G_f, is divided to unique signal lines group 10 so that the first scan line G_ in arbitrary two adjacent signal line group 10
F is different, such that it is able to from top to bottom, or the most every S bar the first scan line G_f is divided into a signal line group
10。
Additionally, each fingerprint recognition drive circuit 20 includes m fingerprint row cutting unit 201.Fingerprint row cutting unit
On the 201 extended line directions being distributed in the first scan line (G_f1, G_f2 ... G_fn).
It should be noted that the major part of above-mentioned first scan line (G_f1, G_f2 ... G_fn) is arranged at viewing area
A, and row fingerprint row cutting unit 201 is arranged in the non-display area of above-mentioned viewing area A periphery, due to this fingerprint row cutting
Unit 201 is distributed on the extended line direction of the first scan line (G_f1, G_f2 ... G_fn), so that this fingerprint row cutting
Unit 201 can be arranged at least one end of horizontally extending the first scan line (G_f1, G_f2 ... G_fn), thus
Make the first scan line (G_f1, G_f2 ... G_fn) still can keep original wiring direction at non-display area.Wherein, figure
2 is with saying that fingerprint row cutting unit 201 is carried out as a example by the two ends of the first scan line (G_f1, G_f2 ... G_fn) are respectively provided with
Bright, so so that the non-display area wiring space at the left and right two ends of viewing area A is symmetrical.
Herein, the directional terminology such as "left", "right", " level " be relative in accompanying drawing have above-mentioned viewing area A and
The orientation that the display floater signal of non-display area is put defines, it should be understood that, these directional terminology are relative
Concept, they for relative to description and clarification, the change in its orientation can placed according to display floater and correspondingly
Change.
On this basis, each fingerprint row cutting unit 201 is connected with a signal line group 10.And this fingerprint row drives
Moving cell 201 is also connected with the first clock signal terminal CLK1 and fingerprint initial signal end STV.Based on this, fingerprint row cutting list
The signal of the first clock signal terminal CLK1, under the control of fingerprint initial signal end STV, is inputted to this letter by unit 201 line by line
In each the first scan line G_f in number line group 10.
In the case, the first scan line (such as G_f (s+1) to G_f (2s)) at position of touch C receive
One clock signal terminal CLK1 opens for the fingerprint recognition element 100 (as shown in Figure 3) being connected with above-mentioned first scan line
Time, the fingerprint at position of touch C can be acquired by above-mentioned fingerprint recognition element 100, and by collection result by touch-control position
Put the reading holding wire RL output at C.Now, include being arranged at viewing area A below or above when fingerprint recognition drive circuit
Finger prints processing electronic circuit 30 time, above-mentioned reading holding wire RL is connected with this finger prints processing electronic circuit 30, thus is referred to by this
Stricture of vagina processes electronic circuit 30 and processes gathering structure and realize fingerprint recognition.Wherein, a plurality of above-mentioned reading holding wire RL is permissible
Directly it is connected with finger prints processing electronic circuit 30, it is also possible to be connected with finger prints processing electronic circuit 30 by Port Multiplier (mux).
On this basis, in order to realize full frame fingerprint recognition, above-mentioned fingerprint recognition element 100 needs to be arranged at viewing area
In A, concrete, can be arranged between the sub-pix that any two is adjacent.Or, as it is shown on figure 3, can be at adjacent two pictures
Between element unit 110, above-mentioned fingerprint recognition element 100 is set.This pixel cell 110 is made up of at least three sub-pix, these three
Sub-pix can be red (R) sub-pix, green (G) sub-pix and blueness (B) sub-pix.Or, above three sub-pix
Can also be cyan sub-pix, magenta sub-pix and yellow sub-pix.TFT in above-mentioned sub-pix and the second scan line
(G-d1, G-d2 ...) is connected.
The most above-mentioned is only that fingerprint recognition element 100 is arranged at the illustration in the A of viewing area, and other example exists
This repeats the most one by one, in order to realize preferably touch-control and display effect, as long as ensure that in the A of viewing area adjacent two
Distance between fingerprint recognition element 100 is between 50 μm～70 μm.Therefore, when above-mentioned distance is less than 50 μm, fingerprint
Recognition component 100 density of setting in display area a is relatively big, can reduce display resolution, and when above-mentioned distance is more than 70 μm
Time, fingerprint recognition element 100 density of setting in display area a is less, can reduce the precision of fingerprint collecting.
Based on this, above-mentioned fingerprint recognition element 100 includes switching TFT and light sensitive diode.Wherein light sensitive diode has
PIN structural as shown in Figure 4, this PIN structural can produce photoelectric effect.In the case, sweep when the first scan line G_f input
When retouching signal, above-mentioned reading holding wire RL applies high pressure so that light sensitive diode is reverse-biased.Now, when finger 111 and display floater
101 when contacting, and the light that backlight provides exposes to the surface of finger 111 through display floater 101, and by finger 111
Surface reflexes to above-mentioned light sensitive diode.Wherein, the light reflexing to light sensitive diode is the strongest, and light sensitive diode is to reading signal
The electric current of line RL output is the biggest.Due to the crestal line on finger 111 surface, reflex to the light intensity of light sensitive diode with valley line different,
So that the varying in size, to realize finger print valley line of electric current that the reading holding wire RL of crestal line and valley line position reads
Or the detection of crestal line.
In sum, the fingerprint recognition circuit that the embodiment of the present invention provides includes for sweeping to the input of n row the first scan line
Retouch the row cutting electronic circuit of signal.Above-mentioned n row the first scan line is divided into m signal line group, and each signal line group includes s bar
First scan line.Wherein, s × m=n, s, m, n are positive integer, and arbitrary first scan line is divided to unique signal lines group.This
Outward, this fingerprint recognition drive circuit includes m fingerprint row cutting unit, and this fingerprint row cutting cell distribution is in the first scan line
On extended line direction, and each fingerprint row cutting unit and a signal line group are connected.On this basis, fingerprint row cutting
Unit is also connected with the first clock signal terminal and fingerprint initial signal end, and this fingerprint row cutting unit is at the initial letter of fingerprint
Number end control under, each the first scan line that the signal of the first clock signal terminal is inputted line by line to this signal line group
On.
So, owing to fingerprint row cutting unit can be under the control of fingerprint initial signal end, by the first clock letter
In each first scan line inputting line by line to this signal line group of signal of number end.Therefore, it can by fingerprint row cutting
Unit directly can input scanning signal, and this fingerprint row cutting for its first scan line being connected in signal line group line by line
Cell distribution is on the extended line direction of the first scan line, so that the first scan line still can keep at non-display area
Original wiring direction, it is not necessary to turning is set because changing wiring direction, thus the problem being unfavorable for narrow frame design.
Hereinafter, the concrete structure of above-mentioned fingerprint row cutting unit 201 is described in detail.
Concrete, as it is shown in figure 5, each fingerprint row cutting unit 201 includes s the fingerprint shift LD list cascaded
Unit (RS_f1, RS_f2 ... RS_fs), the signal output part of every one-level fingerprint shift register cell (such as RS_f1)
OUTPUT connects a line the first scan line (such as G_f1).
The input INPUT of the first order fingerprint shift LD subelement RS_f1 in each fingerprint row cutting unit 201
Connecting fingerprint initial signal end STV, the signal output part of upper level fingerprint shift LD subelement connects the displacement of next stage fingerprint
The signal output part depositing the signal input part INPUT of subelement, afterbody fingerprint shift LD subelement RS_fs connects multiple
Position signal end RESET.Wherein, above-mentioned finger prints processing electronic circuit 30 can connect each fingerprint shift LD subelement RS_f's
Reset signal end RESET, such that it is able to input reset signal to above-mentioned reset signal end RESET.
On this basis, as in figure 2 it is shown, above-mentioned m fingerprint row cutting unit 201 can be concatenated together, so,
The fingerprint initial signal end STV of next stage fingerprint row cutting unit 201 connect in upper level fingerprint row cutting unit 201 to this
The signal output part OUTPUT of last column the first scan line output scanning signal that fingerprint row cutting unit 201 is connected.Example
As, the fingerprint row cutting unit 201 being connected with second group of signal line group 10 in Fig. 2, for second level fingerprint row cutting unit
201, its fingerprint initial signal end STV2 connect in first order fingerprint row cutting unit 201 to this fingerprint row cutting unit 201
The signal output part OUTPUT of last column the first scan line G_fs output scanning signal being connected.So, first
Under the control of the fingerprint initial signal end STV1 of level fingerprint row cutting unit 201, fingerprint recognition drive circuit 20 is successively to each
Row the first scan line input scanning signal.
But, aforesaid way is that the first scan line inputs scanning signal line by line, therefore can reduce progressive scan fingerprint and know
The efficiency of other element 100, increases driving power consumption, it is advantageous to, can first determine position of touch C, then according to position of touch C
Open the fingerprint row cutting unit 201 at this position of touch C.Such as, in Fig. 2, position of touch C is positioned at second level fingerprint row cutting
At unit 201, it is only necessary to second level fingerprint row cutting unit 201 is connected to this second level fingerprint row cutting unit 201
Each the first scan line (i.e. from G_f (s+1) to G_f (2s)) in the second group of signal line group 10 connect progressively scans,
Thus realize opening the fingerprint recognition element 100 at position of touch C.
Based on this, as shown in Figure 6, above-mentioned m fingerprint row cutting unit 201 fingerprint initial signal end (STV1,
STV2 ... STVm) finger prints processing electronic circuit 30 can be all connected to, this finger prints processing electronic circuit 30 can rise to above-mentioned fingerprint
Beginning signal end (STV1, STV2 ... STVm) input fingerprint initial signal, to open fingerprint row cutting unit 201.
But, owing to finger prints processing electronic circuit 30 is arranged at the lower section of viewing area A, therefore when each fingerprint row cutting list
When the fingerprint initial signal end (STV1, STV2 ... STVm) of unit 201 is connected by lead-in wire with finger prints processing electronic circuit 30, on
State lead-in wire to need to change wiring direction, thus need to arrange turning B, thus take bigger wiring space, be unfavorable for narrow frame
Design requirement.
In order to solve the problems referred to above, as it is shown in fig. 7, this row cutting electronic circuit also includes initial signal driver element 40.Should
Initial signal driver element 40 is also distributed on the extended line direction of the first scan line G-f, and this initial signal driver element 40
Connect second clock signal end CLK2, drive signal end D, and with the fingerprint initial signal end of m fingerprint row cutting unit 20
(STV1, STV2 ... STVm) is connected.This initial signal driver element 40 is under the control driving signal end D, by the
The signal of two clock signal terminal CLK2 sequentially inputs to above-mentioned fingerprint initial signal end (STV1, STV2 ... STVm).
Wherein, Fig. 7 only depicts it is arranged at initial signal driver element 40 and the fingerprint row cutting of A side, viewing area
Unit 201.Whether the present invention arranges initial signal driver element 40 and fingerprint row cutting unit to the opposite side of viewing area A
201 do not limit.
In the case, when fingerprint recognition drive circuit also includes finger prints processing electronic circuit 30, above-mentioned finger prints processing
Circuit 30 connects this driving signal end D, for driving signal end D input drive signal.So, initial signal drives single
The driving signal end D of unit 40 can be only connected with finger prints processing electronic circuit 30 by a lead-in wire, thus is receiving fingerprint
After processing the driving signal of electronic circuit 30 output, the signal of second clock signal end CLK2 can be sequentially input to above-mentioned fingerprint
Initial signal end (STV1, STV2 ... STVm), to reach to open successively the purpose of m fingerprint row cutting unit 201.Due to respectively
The fingerprint initial signal end STV of individual fingerprint row cutting unit 201 is without being individually connected with finger prints processing electronic circuit 30 by lead-in wire
Connect, above-mentioned lead-in wire therefore can be avoided to need to arrange turning B in connection procedure, cause taking the problem that wiring space is bigger.
Based on this, so that initial signal driver element 40 can be one by one to the fingerprint of m fingerprint row cutting unit 201
Initial signal end (STV1, STV2 ... STVm) input signal, above-mentioned initial signal driver element 40 as shown in Figure 8, including many
The initial signal shift LD subelement (RS_q1, RS_q2 ... RS_qm) of individual cascade, every one-level initial signal shift LD
The signal output part OUTPUT of unit (such as RS_q1) connects a fingerprint initial signal end (such as STV1).
The signal input part INPUT of first order initial signal shift LD subelement RS_q1 connects above-mentioned driving signal end
D, the signal output part OUTPUT of upper level initial signal shift LD subelement connect next stage initial signal shift LD
The signal output part OUTPUT of the signal input part INPUT of unit, afterbody initial signal shift LD subelement RS_qm is even
Meet reset signal end RESET.Wherein, above-mentioned finger prints processing electronic circuit 30 connects this reset signal end RESET, for this reset
Signal end input reset signal.
Below to fingerprint shift LD subelement (RS_f1 or RS_f2 ... RS_fs) as shown in Figure 5 and such as Fig. 8 institute
The structure of the initial signal shift LD subelement (RS_q1 or RS_q2 ... RS_qm) shown is described in detail.
As a example by fingerprint shift LD subelement (RS_f1 or RS_f2 ... RS_fs), as it is shown in figure 9, include pull-up control
Molding block 2011, pull-up module 2012, drop-down control module 2013, drop-down module 2014 and reseting module 2015.
Wherein, pull-up control module 2011 connects the first voltage end VDD, signal input part INPUT and pull-up node PU,
Under the control at signal input part INPUT, the voltage of the first voltage end VDD is exported to pull-up node PU.
Concrete, above-mentioned pull-up control module 2011 can include transistor M1, and the grid of this transistor M1 connects signal
Input INPUT, the first pole connects the first voltage end VDD, and the second pole connects pull-up node PU.
Pull-up module 2012 connects pull-up node PU, clock signal input terminal CK, and this clock signal input terminal connects Fig. 5 institute
The first clock signal terminal shown.Additionally, above-mentioned pull-up module 2012 is also connected with signal output part OUTPUT, at pull-up node
Under the control of PU, the signal of the first clock signal terminal CLK1 is exported to signal output part OUTPUT.
Concrete, above-mentioned pull-up module 2012 can include transistor M3 and electric capacity C, and wherein, the grid of transistor M3 is even
Connecting and draw node PU, the first pole connects clock signal input terminal CK, and the second pole connects signal output part OUTPUT.
Drop-down control module 2013 connects the second voltage end VGH, tertiary voltage end VGL, pull-up node PU and drop-down joint
Point PD, under the control of the second voltage end VGH, exports the signal of the second voltage end VGH to pull-down node PD, or,
Under the control at pull-up node PU, the current potential of pull-down node PD is pulled down to the current potential of tertiary voltage end VGL.
Concrete, above-mentioned drop-down control module 2013 includes transistor M5, transistor M6, transistor M8 and transistor
M9.Wherein the grid of transistor M5 connects second pole of transistor M9, and first pole of this transistor M5 connects the second voltage end
VGH, the second pole connects pull-down node PD.The grid of transistor M6 connects pull-up node PU, and the first pole connects tertiary voltage end
VGL, the second pole connects pull-down node PD.The grid of transistor M8 connects pull-up node PU, and the first pole connects tertiary voltage end
VGL, the second pole connects the grid of transistor M5.The grid of transistor M9 and the first pole connect the second voltage end VGH.
Drop-down module 2014 connects pull-down node PD, pull-up node PU, signal output part OUTPUT and tertiary voltage end
VGL, under the control of pull-down node PD, is pulled down to the 3rd by the current potential of pull-up node PU and signal output part OUTPUT
The current potential of voltage end VGL.
Concrete, drop-down module 2014 includes transistor M7 and transistor M10.The grid of transistor M7 connects pull-down node
PD, the first pole connects tertiary voltage end VGL, and the second pole connects signal output part OUTPUT.The grid of transistor M10 connects drop-down
Node PD, the first pole connects tertiary voltage end VGL, and the second pole connects pull-up node PU.
Reseting module 2015 connects reset signal end RESET, pull-up node PU and the 4th voltage end VSS, for multiple
Under the control of position signal end RESET, the current potential of pull-up node PU is pulled down to the current potential of the 4th voltage end VSS.
On this basis, above-mentioned fingerprint shift LD subelement (RS_f1 or RS_f2 ... RS_fs) also includes initializing
Module 2016.This initialization module 2016 connects signal output part OUTPUT, initialization voltage end Vint and tertiary voltage end
VGL.Under the control at initialization voltage end Vint, the current potential of signal output part OUTPUT is pulled down to tertiary voltage end
The current potential of VGL.
Concrete, this initialization module 2016 includes transistor M7, and the grid of this transistor M7 connects initialization voltage end
Vint, the first pole connects tertiary voltage end VGL, and the second pole connects signal output part OUTPUT.
It should be noted that each transistor above-mentioned can be N-type transistor, it is also possible to for P-type transistor.This transistor
First can be extremely source electrode, second extremely drains, or first extremely drains, the second pole source electrode.This is not limited by the present invention
Fixed.
When above-mentioned transistor is N-type, and the first voltage end VDD, the second voltage end VGH input high level, tertiary voltage
When end VGL and the 4th voltage end VSS input low level, to above-mentioned fingerprint shift LD subelement (RS_f1 or RS_f2 ... RS_
Fs) work process is described in detail.
One frame fingerprint row cutting of fingerprint row cutting unit 201 can include sweep time initial phase, the charging stage,
Scanning signal output stage, reseting stage, the noise reduction stage.
Wherein, at initial phase, the voltage that initialization voltage end Vint input is identical for voltage end VDD with first, crystal
Pipe M7 turns on, thus the current potential of signal output part OUTPUT is pulled down to tertiary voltage end VGL, with to signal output part OUTPUT
Initialize.After initial phase, the voltage that beginningization voltage end Vint input is identical for voltage end VSS with the 4th, so that
Obtain transistor M7 and be in cut-off state.
In the charging stage, signal input part INPUT input high level, transistor M1 turns on, by the electricity of the first voltage end VDD
Pressure output is to pull-up node PU, to be charged pull-up node PU.
In the scanning signal output stage, under the control of pull-up node PU, transistor M3 is turned on, clock signal input terminal
The signal of the first clock signal terminal CLK1 is exported to signal output part OUTPUT by CK, when this first clock signal terminal CLK1 exports
During high level, signal output part OUTPUT can be to the first scan line G_f input being connected with this signal output part OUTPUT
Scanning signal, the fingerprint recognition element 100 being connected with this first scan line G_f with unlatching, thus finger print information is adopted
Collection.
In the case, pull-up node PU control transistor M6 and transistor M8 conducting, thus by transistor M6 will under
The current potential drawing node PD is pulled down to the current potential of tertiary voltage end VGL.By transistor M8, the grid of transistor M5 is dragged down.
At reseting stage, reset signal end RESET input high level, transistor M2 turns on, thus by pull-up node PU's
Current potential is pulled down to the current potential of the 4th voltage end VSS.
In the noise reduction stage, transistor M5 turns on, by the high level output of the second voltage end VGH to pull-down node PD, thus
Make transistor M10 and transistor M11 conducting.By transistor M10, the current potential of pull-up node PU is pulled down to tertiary voltage end
VGL.By transistor M11, signal output part OUTPUT is pulled down to tertiary voltage end VGL.
It should be noted that initial signal shift LD subelement (RS_q1 or RS_q2 ... RS_qm) can also use
Identical structure shown in Fig. 9, difference is that clock signal input terminal CK connects second clock signal end as shown in Figure 8
CLK2.Wherein, the work process of modules and transistor is same as above, and here is omitted.
Additionally, in order to realize display, at least side of viewing area A can also arrange display driver element as shown in Figure 7
50, for the second scan line G_d of viewing area is inputted scanning signal, line by line to open the Asia picture in the A of viewing area line by line
Element.Wherein, display driver element 50 includes the display shift LD subelement of multiple cascade, this display shift LD subelement
Equally using the identical structure shown in Fig. 9, difference is that clock signal input terminal CK connects other clock signal
End, the such as the 3rd clock signal terminal CLK3.
The embodiment of the present invention provides a kind of array base palte, including any one fingerprint recognition drive circuit as above,
There is the structure identical with the fingerprint recognition drive circuit that previous embodiment provides and beneficial effect, due to previous embodiment
Structure and beneficial effect to fingerprint recognition drive circuit are described in detail, and here is omitted.
The embodiment of the present invention provides a kind of display device, including array base palte as above, has and previous embodiment
The identical structure of array base palte provided and beneficial effect, here is omitted.
Additionally, this display device the most also includes the reading holding wire RL arranged in a crossed manner with the first scan line G_f.
This first scan line G_f is intersected define fingerprint identification unit with being read holding wire RL, is provided with in each fingerprint identification unit
Fingerprint recognition element 100.Structure and the fingerprint identification process of this fingerprint recognition element 100 are as it was previously stated, here is omitted.
A kind of fingerprint identification method of embodiment of the present invention offer, as shown in Figure 10, including:
S101, in first time period T1, export high level at touching signals Touch2 as shown in figure 11, to such as Fig. 2 institute
The position of touch C shown detects.
It should be noted that during in order to avoid display, display signal and touching signals as described in Figure 11
Disturb between (Touch1, Touch2 and Touch3).Can display adjacent two picture frames between blanking time
(Blank Time) is inserted into touch-control time period T, so that above-mentioned touching signals (Touch1, Touch2 and Touch3) can
High level is exported in above-mentioned touch-control time period T.In the case, before above-mentioned touching signals Touch2 output high level, as
Shown in Figure 11, the control software in display device, within the blanking time (Blank Time), control touching signals Touch1 output
High level, to realize the T insertion of touch-control time period.
Additionally, the detection method of position of touch is not limited by the present invention, condenser type can be used, such as self-capacitance or
Fingerprint positions is detected by the touch base plate of mutual capacitance, it is also possible to use infrared mode etc..
S102, exports high level at the second time period T2, touching signals Touch3, according to above-mentioned position of touch C, by such as
In 201 signal line group 10 being connected with this fingerprint row cutting unit 201 first is swept by the fingerprint row cutting unit shown in Fig. 2
Retouch line G_f and input scanning signal line by line, to open the fingerprint recognition element 100 at position of touch C.
S103, second time period T2 touching signals Touch3 export high level, this fingerprint recognition element 100 to fingerprint believe
Breath is acquired, and by collection result output to reading holding wire RL.
Wherein, first time period T1 and the second time period T2 are respectively positioned in touch-control time period T.
Further, as it is shown in fig. 7, work as position of touch C and jth signal line group (as a example by second signal line group)
When position is corresponding, wherein, j≤m, j are positive integer.And drive sub-circuits of being expert at also includes the feelings of initial signal driver element 40
Under condition, above-mentioned steps S102 includes:
First, initial signal driver element 40 under the control of driving signal end D as shown in figure 12, such as, drives signal
End D input high level, sequentially inputs the first to jth fingerprint initial signal end by the signal of second clock signal end CLK2
(STV1 to STVj)；
It follows that under the control of above-mentioned fingerprint initial signal end (STV1 to STVj) ,-1 fingerprint row of the first to jth drives
Moving cell 201, inputs to the signal being connected with fingerprint row cutting unit 201 line by line by the signal of the first clock signal terminal CLK1
In each the first scan line G_f in line group 10.Wherein, the first clock signal terminal CLK1 exports Non-scanning mode signal, i.e. exports
Low level, so that the fingerprint recognition element 100 at the C of non-touch-control position is closed.
Finally, it follows that in the second time period T2, i.e. fingerprint detection time period, jth fingerprint row cutting unit 201,
The signal of the first clock signal terminal CLK1 is inputted line by line to the signal line group 10 being connected with fingerprint row cutting unit 201
In each the first scan line G_f.Wherein, the first clock signal terminal CLK1 output scanning signal, i.e. high level, so that touch-control
Fingerprint recognition element 100 at the C of position is opened, finger print information is acquired in above-mentioned second time period T2, and will inspection
Survey result and export to finger prints processing electronic circuit 30 by reading holding wire RL, so that fingerprint is identified.
It should be noted that after position of touch C changes, above three step can be performed the most successively, with
Realize fingerprint recognition.
So, by above-mentioned initial signal driver element and fingerprint row cutting unit, control signal is shifted
And caching, so that the first scan line still can keep original wiring direction at non-display area, it is not necessary to because changing cloth
Line direction and turning is set, thus the problem being unfavorable for narrow frame design.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited thereto, and any
Those familiar with the art, in the technical scope that the invention discloses, can readily occur in change or replace, should contain
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with described scope of the claims.
Claims (12)
1. a fingerprint recognition drive circuit, it is characterised in that include for the row to n row the first scan line input scanning signal
Drive sub-circuits；
Described n row the first scan line is divided into m signal line group, and each described signal line group includes the first scanning described in s bar
Line；Wherein, s × m=n, s, m, n are positive integer；Arbitrary first scan line is divided to unique signal lines group；
Described fingerprint recognition drive circuit includes m fingerprint row cutting unit, and described fingerprint row cutting cell distribution is in described
On the extended line direction of scan line, and each described fingerprint row cutting unit and a described signal line group are connected, institute
Stating fingerprint row cutting unit to be also connected with the first clock signal terminal and fingerprint initial signal end, described fingerprint row cutting unit is used
Under the control at described fingerprint initial signal end, the signal of described first clock signal terminal is inputted line by line to this signal line group
In each the first scan line on.
Fingerprint recognition drive circuit the most according to claim 1, it is characterised in that
Each described fingerprint row cutting unit includes that s the fingerprint shift LD subelement cascaded, the displacement of every one-level fingerprint are posted
The signal output part of storage unit connects the first scan line described in a line；
The input of the first order fingerprint shift LD subelement in each described fingerprint row cutting unit connects described fingerprint
Initial signal end, the signal output part of upper level fingerprint shift LD subelement connects next stage fingerprint shift LD subelement
Signal input part, the signal output part of afterbody fingerprint shift LD subelement connects reset signal end.
Fingerprint recognition drive circuit the most according to claim 1 and 2, it is characterised in that described row cutting electronic circuit also wraps
Include initial signal driver element；
Described initial signal driver element connect second clock signal end, drive signal end, and with m fingerprint row cutting unit
Fingerprint initial signal end is connected, and described initial signal driver element is under the control of described driving signal end, by described
The signal of second clock signal end sequentially inputs to described fingerprint initial signal end.
Fingerprint recognition drive circuit the most according to claim 3, it is characterised in that described initial signal driver element includes
The initial signal shift LD subelement of multiple cascades, the signal output part of every one-level initial signal shift LD subelement connects
One described fingerprint initial signal end；
The signal input part of first order initial signal shift LD subelement connects described driving signal end, upper level initial signal
The signal output part of shift LD subelement connects the signal input part of next stage initial signal shift LD subelement, last
The signal output part of level initial signal shift LD subelement connects reset signal end.
Fingerprint recognition drive circuit the most according to claim 3, it is characterised in that also include finger prints processing electronic circuit；
Described finger prints processing electronic circuit connects described driving signal end, for described driving signal end input drive signal；And
Described finger prints processing electronic circuit is also connected with reset signal end, for inputting reset signal to described reset signal end.
Fingerprint recognition drive circuit the most according to claim 1, it is characterised in that also include finger prints processing electronic circuit；
Described finger prints processing electronic circuit connects fingerprint initial signal end, for initiateing to described fingerprint initial signal end input fingerprint
Signal.
Fingerprint recognition drive circuit the most according to claim 2, it is characterised in that described fingerprint shift LD subelement bag
Include pull-up control module, pull-up module, drop-down control module, drop-down module and reseting module；
Described pull-up control module connects the first voltage end, signal input part and pull-up node, for inputting at described signal
Under the control of end, the voltage of described first voltage end is exported to described pull-up node；
Described pull-up module connects described pull-up node, the first clock signal terminal and signal output part, in described pull-up
Under the control of node, the signal of described first clock signal terminal is exported to described signal output part；
Described drop-down control module connects the second voltage end, tertiary voltage end, described pull-up node and pull-down node, is used for
Under the control of described second voltage end, the signal of described second voltage end is exported to described pull-down node, or, in institute
State under the control of pull-up node, the current potential of described pull-down node is pulled down to the current potential of described tertiary voltage end；
Described drop-down module connects described pull-down node, described pull-up node, described signal output part and described tertiary voltage
End, under the control of described pull-down node, is pulled down to institute by the current potential of described pull-up node and described signal output part
State the current potential of tertiary voltage end；
Described reseting module connects described reset signal end, described pull-up node and described 4th voltage end, for described
Under the control of reset signal end, the current potential of described pull-up node is pulled down to the current potential of described 4th voltage end.
Fingerprint recognition drive circuit the most according to claim 7, it is characterised in that described fingerprint shift LD subelement is also
Including initialization module；
Described initialization module connects described signal output part, initialization voltage end and described tertiary voltage end, in institute
State under the control of initialization voltage end, the current potential of described signal output part is pulled down to the current potential of described tertiary voltage end.
9. an array base palte, it is characterised in that include the fingerprint recognition drive circuit as described in any one of claim 1-8.
10. a display device, it is characterised in that include array base palte as claimed in claim 9；
Described display device also includes the reading holding wire arranged in a crossed manner with the first scan line, described first scan line and described reading
Take holding wire intersection and define fingerprint identification unit；Fingerprint recognition element it is provided with in described fingerprint identification unit.
The fingerprint identification method of 11. 1 kinds of display devices, it is characterised in that including:
Position of touch is detected；
According to described position of touch, the signal line group being connected with described fingerprint row cutting unit by fingerprint row cutting unit pair
In the first scan line input scanning signal line by line, to open the fingerprint recognition element of described touch position；
Finger print information is acquired by described fingerprint recognition element, and exports collection result to reading holding wire.
The fingerprint identification method of 12. display devices according to claim 11, it is characterised in that when position of touch and jth
When the position of individual signal line group is corresponding, wherein, j≤m, j are positive integer；
In the case of drive sub-circuits of being expert at also includes initial signal driver element, described according to described position of touch, by referring to
The first scan line in the signal line group that stricture of vagina row cutting unit pair is connected with described fingerprint row cutting unit inputs scanning line by line
Signal, includes opening the fingerprint recognition element of described touch position:
The signal of second clock signal end, under the control driving signal end, is sequentially input the by described initial signal driver element
One to jth fingerprint initial signal end；
-1 fingerprint row cutting unit of the first to jth, the signal of described first clock signal terminal is inputted line by line to described finger
In each the first scan line in the signal line group that stricture of vagina row cutting unit is connected；Wherein, the first clock signal terminal output is non-
Scanning signal, so that the fingerprint recognition element of non-touch-control position is closed；
Jth fingerprint row cutting unit, the signal of described first clock signal terminal is inputted line by line to described fingerprint row cutting
In each the first scan line in the signal line group that unit is connected；Wherein, the first clock signal terminal output described scanning letter
Number, so that the fingerprint recognition element of touch position is opened.
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