CN104077565B - Fingerprint identification unit and electronic equipment - Google Patents
Fingerprint identification unit and electronic equipment Download PDFInfo
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- CN104077565B CN104077565B CN201410270076.6A CN201410270076A CN104077565B CN 104077565 B CN104077565 B CN 104077565B CN 201410270076 A CN201410270076 A CN 201410270076A CN 104077565 B CN104077565 B CN 104077565B
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Abstract
The present invention provides a kind of fingerprint identification unit, including fingerprint recognition circuit and at least one fingerprint detecting electrode group, at least one fingerprint detecting electrode group includes multiple fingerprints detecting electrode, fingerprint identification unit includes the multiple signal output channels being connected with fingerprint recognition circuit, every group of corresponding signal output channels of fingerprint detecting electrode group, to export the electric signal in every group of fingerprint detecting electrode group in each fingerprint detecting electrode, multiple fingerprints detecting electrode in fingerprint detecting electrode group can export electric signal to corresponding signal output channels successively, and in fingerprint detects electrode group, all fingerprint detecting electrodes are connected with corresponding signal output channels, fingerprint recognition circuit can determine the pattern of fingerprint according to the electric signal received.The present invention also provides a kind of electronic equipment.Multiple fingerprint detecting electrodes share a signal output channels, reduce the quantity of signal output channels and the interface of fingerprint recognition circuit, and simplify the design to fingerprint recognition circuit.
Description
Technical field
The present invention relates to display technology field, in particular it relates to which a kind of fingerprint identification unit and a kind of fingerprint that includes are known
The electronic equipment of other unit.
Background technology
The fingerprint of people is formed by a series of ridge on finger tip skin surface and paddy, the fingerprint of person to person be it is mutually different,
Fingerprint by verifying a people is the identity that can verify that this people.In order to improve the processing safety of display device, Ke Yi
Fingerprint identification unit is set in display device, in the program of operation installation some need for confidentiality on the display apparatus, it is necessary to
The fingerprint of verification operation person, if the fingerprint of operator can not show that operator haves no right to run said procedure by checking.
Shown in Fig. 1 is a kind of existing fingerprint identification unit, and the fingerprint identification unit includes fingerprint recognition electricity
Road and multiple fingerprints detecting electrode C, each fingerprint detecting electrode pair answer a signal output channels O and an input (not to show
Go out), electrode is detected to fingerprint by the input and loads raw electrical signal, is detected fingerprint in electrode by output channel O
Electric signal output to the fingerprint recognition circuit.Fingerprint detecting electrode C has the function of self-capacitance, when the finger touch of people refers to
When line detects electrode C, fingerprint detecting electrode C self-capacitance can be caused to change, therefore output channel O is exported to fingerprint detection
The electric signal of circuit can also be changed, and the pattern of fingerprint is determined by electric signal knots modification.
Specifically, as shown in Fig. 2 the fingerprint of people includes the ridge A of protrusion and the paddy B of indent, when the finger F of people touches fingerprint
During recognition unit, the ridge A on fingerprint detects the distance between electrode with corresponding fingerprint and detectd different from the paddy B on fingerprint with fingerprint
The distance between electrode C is surveyed, the paddy B on ridge A and fingerprint on fingerprint causes the electric signal in corresponding fingerprint detecting electrode C to change
Becoming difference, (the signal knots modification caused by the ridge A on fingerprint in corresponding fingerprint detecting electrode C causes greatly with the paddy B on fingerprint
Corresponding fingerprint detecting electrode C in the signal variable), therefore the electric signal exported to fingerprint recognition circuit is also different, refers to
Line identification circuit can judge the specific pattern of fingerprint according to the difference for the electric signal that each fingerprint detecting electrode C is exported.
Fingerprint detecting electrode C in fingerprint identification unit is more, then corresponding output channel O is more, correspondingly, refers to
Interface between line identification circuit and output channel O is more, so as to increase the design difficulty of fingerprint recognition circuit.
Therefore, how to reduce the quantity of the output channel O needed for fingerprint identification unit turns into this area skill urgently to be resolved hurrily
Art problem.
The content of the invention
It is an object of the invention to provide a kind of fingerprint identification unit and a kind of electronics including the fingerprint identification unit to set
It is standby.The fingerprint identification unit has less signal output channels.
To achieve these goals, as one aspect of the present invention, there is provided a kind of fingerprint identification unit, the fingerprint are known
Other unit includes fingerprint recognition circuit and at least one fingerprint detecting electrode group, it is characterised in that at least one fingerprint is detectd
Surveying electrode group includes multiple fingerprints detecting electrode, and the fingerprint identification unit is multiple including being connected with the fingerprint recognition circuit
Signal output channels, the corresponding signal output channels of fingerprint detecting electrode group described in every group, to export finger described in every group
Electric signal in line detecting electrode group in each fingerprint detecting electrode, include the finger of multiple fingerprint detecting electrodes
Multiple fingerprint detecting electrodes in line detecting electrode group can export telecommunications to the corresponding signal output channels successively
Number, and in the fingerprint detecting electrode group including multiple fingerprint detecting electrodes, all fingerprints detecting electrode
It is connected with the corresponding signal output channels, the signal output channels can be by the electric signal output received to the finger
Line identification circuit, the fingerprint recognition circuit can determine the pattern of fingerprint according to the electric signal received.
Preferably, including multiple fingerprints detect the fingerprint detecting electrode group of electrode also including multiple switch member
Each fingerprint detecting electrode in part, including the fingerprint detecting electrode group of multiple fingerprint detecting electrodes is corresponding with
One switch element, the switch element will the corresponding fingerprint detecting electrode and the corresponding signal output channels
Selectively turn on.
Preferably, the fingerprint identification unit also includes drive circuit, and the drive circuit can export so that described open
Closing element conductive or the control signal of cut-off, the switch element includes thin film transistor (TFT), the grid of the switch element and institute
The output end for stating drive circuit is connected, and the source electrode of the switch element is connected with the corresponding fingerprint detecting electrode, described to open
The drain electrode for closing element is connected with the corresponding signal output channels.
Preferably, each fingerprint detecting electrode group includes multiple fingerprint detecting electrodes.
Preferably, the drive circuit includes multiple drive circuit units of cascade, multiple drive circuit units
Output end is connected correspondingly with the grid of multiple switch elements.
Preferably, multiple fingerprint detecting electrode arrangements are multirow.
As another aspect of the present invention, there is provided a kind of electronic equipment, the electronic equipment include fingerprint identification unit, its
In, the fingerprint identification unit is above-mentioned fingerprint identification unit provided by the present invention.
Preferably, the electronic equipment includes display panel, and the fingerprint identification unit is set on said display panel.
Preferably, the display panel includes liquid crystal cell and the transparency carrier being covered on the exiting surface of the liquid crystal cell,
The fingerprint detecting electrode is arranged between the exiting surface of the transparency carrier and the liquid crystal cell.
Preferably, the display panel includes liquid crystal cell and the transparency carrier being covered on the exiting surface of the liquid crystal cell,
The fingerprint detecting electrode is arranged on the outer surface of the transparency carrier.
In the fingerprint detecting electrode group including multiple fingerprint detecting electrodes, multiple fingerprint detecting electrodes share one
Signal output channels, so as to reduce the total quantity of the signal output channels set in the fingerprint identification unit, and reduce
The quantity of signal output channels and the interface of fingerprint recognition circuit, and simplify the design to fingerprint recognition circuit.
Brief description of the drawings
Accompanying drawing is for providing a further understanding of the present invention, and a part for constitution instruction, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the schematic diagram of the fingerprint identification unit shown；
Principle schematic when Fig. 2 is the fingerprint identification unit identification fingerprint pattern shown in Fig. 1；
Fig. 3 is a kind of circuit diagram of embodiment of fingerprint identification unit provided by the present invention；
Fig. 4 is in the another embodiment of fingerprint identification unit provided by the present invention, and fingerprint detects the arrangement of electrode
Schematic diagram.
Description of reference numerals
1：First signal output channels 2：Secondary signal output channel
3：Timing sequencer
C11：The first fingerprint detecting electrode in first fingerprint detecting electrode group
C12：The second fingerprint detecting electrode in first fingerprint detecting electrode group
C13：The 3rd fingerprint detecting electrode in first fingerprint detecting electrode group
C21：The first fingerprint detecting electrode in second fingerprint detecting electrode group
C22：The second fingerprint detecting electrode in second fingerprint detecting electrode group
C23：The 3rd fingerprint detecting electrode in second fingerprint detecting electrode group
C31：The first fingerprint detecting electrode in 3rd fingerprint detecting electrode group
C32：The second fingerprint detecting electrode in 3rd fingerprint detecting electrode group
C33：The 3rd fingerprint detecting electrode in 3rd fingerprint detecting electrode group
C41：The first fingerprint detecting electrode in 4th fingerprint detecting electrode group
C42：The second fingerprint detecting electrode in 4th fingerprint detecting electrode group
C43：The 3rd fingerprint detecting electrode in 4th fingerprint detecting electrode group
T11、T12、T13、T21、T22、T23：Switch element
D11、D12、D13、D21、D22、D23：Drive circuit unit
C：Fingerprint detecting electrode O：Output channel
A：Ridge B：Paddy
F：Finger
Embodiment
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
As one aspect of the present invention, as shown in Figure 3, there is provided a kind of fingerprint identification unit, the fingerprint identification unit bag
Fingerprint recognition circuit and at least one fingerprint detecting electrode group are included, wherein, at least one fingerprint detecting electrode group includes more
The individual fingerprint detecting electrode, multiple signal outputs that the fingerprint identification unit includes being connected with the fingerprint recognition circuit are led to
Road, the corresponding signal output channels of fingerprint detecting electrode group described in every group, electrode is detected to export fingerprint described in every group
Electric signal in group in each fingerprint detecting electrode, include the fingerprint detecting electrode of multiple fingerprint detecting electrodes
Multiple fingerprints detecting electrodes in group can export electric signal to the corresponding signal output channels successively, and including
In the fingerprint detecting electrode group of multiple fingerprints detecting electrodes, all fingerprints detecting electrode with it is corresponding described in
Signal output channels are connected, the signal output channels can by the electric signal output received to the fingerprint recognition circuit,
The fingerprint recognition circuit can determine the pattern of fingerprint according to the electric signal received.
As mentioned above it is possible, in the fingerprint detecting electrode group including multiple fingerprint detecting electrodes, multiple fingerprints are detectd
Survey electrode and share a signal output channels, so as to reduce the signal output channels set in the fingerprint identification unit
Total quantity, be advantageous to arrange the fingerprint identification unit in less space, and then be advantageously implemented and know including the fingerprint
The miniaturization of the electronic equipment of other unit.
Because the quantity of signal output channels reduces, correspondingly, in fingerprint recognition circuit between signal output channels
Interface also reduce, so as to simplify the design of fingerprint recognition circuit, so can reduce fingerprint identification unit it is overall into
This.
It is easily understood that the fingerprint identification unit includes providing for fingerprint recognition to each fingerprint detecting electrode
The signal source of raw electrical signal, and fingerprint detecting electrode also includes input, signal source detects electrode by the fingerprint
Input to fingerprint detecting electrode provide raw electrical signal, and detect electrode in itself have self-capacitance function.When the hand of people
When finger fingerprint is placed on above fingerprint identification unit, the change of fingerprint detecting electrode self-capacitance can be caused.Ridge on fingerprint with it is corresponding
Fingerprint detecting the distance between electrode be different from the distance between paddy on fingerprint and fingerprint detecting electrode, ridge on fingerprint and
It is different that paddy on fingerprint causes the electric signal in corresponding fingerprint detecting electrode to change, therefore exports to the electricity of fingerprint recognition circuit
Signal is also different, and fingerprint recognition circuit can judge fingerprint according to the difference for the electric signal that each fingerprint detecting electrode exports
Specific pattern.If touch the fingerprint identification unit without finger, the electric signal and original electricity of fingerprint detecting electrode output
Signal is identical.
In the present invention, the quantity that electrode group is detected to fingerprint is not specifically limited, for example, the fingerprint detecting unit can
To detect electrode group including a fingerprint, a fingerprint detecting group of motors includes multiple fingerprint detecting electrodes.In order to improve
The speed of fingerprint detecting, it is preferable that fingerprint detecting unit can include multiple fingerprints detecting electrode group.
In figure 3 in the circuit diagram of shown fingerprint identification unit, two groups of fingerprints detecting electrode group therein is illustrate only,
Two groups of fingerprint detecting electrode groups include three fingerprints and detect electrode.
As shown in figure 3, the first fingerprint detecting electrode C11 of the first fingerprint detecting electrode group, the first fingerprint detecting electrode group
The second fingerprint detecting electrode C12, the 3rd fingerprint detecting electrode C13 of the first fingerprint detecting electrode group lead to the first signal output
Road 1 is connected, and is detected at one in the cycle, the first fingerprint detecting electrode C11 of the first fingerprint detecting electrode group, the detecting of the first fingerprint
The second fingerprint detecting electrode C12 of electrode group, the 3rd detecting electrode C13 of the first fingerprint detecting electrode group are successively to the first signal
Output channel 1 exports electric signal；The second fingerprint detecting electrode C21, the first fingerprint detecting electrode of second fingerprint detecting electrode group
The second fingerprint detecting electrode C22 of group, the 3rd fingerprint detecting electrode C23 and the first signal output of the second fingerprint detecting electrode group
Passage 1 is connected, and is detected at one in the cycle, and the first fingerprint detecting electrode C21, the second fingerprint of the second fingerprint detecting electrode group are detectd
The second fingerprint detecting electrode C22 of electrode group, the 3rd fingerprint detecting electrode C23 of the second fingerprint detecting electrode group are surveyed successively to the
Binary signal output channel 2 exports electric signal.The operation principle of the fingerprint identification unit shown in Fig. 3 is detailed below.
One detecting cycle includes the first detecting subcycle, the second detecting subcycle and the 3rd detecting subcycle.
In the first detecting subcycle, the first fingerprint of the first fingerprint detecting electrode group detects electrode C11 to the first signal
Output channel 1 exports electric signal, and the first fingerprint of the second fingerprint detecting electrode group detects electrode C21 to secondary signal output channel
The electric signal of 2 outputs.It should be appreciated that in the first detecting subcycle, the second fingerprint of the first fingerprint detecting electrode group is detectd
Survey electrode C12, the 3rd detecting electrode C13 of the first fingerprint detecting electrode group do not export electric signal to the first signal output channels 1,
And the second fingerprint detecting electrode C21 of the second fingerprint detecting electrode group and the 3rd detecting electrode of the second fingerprint detecting electrode group
C23 does not export electric signal to secondary signal output channel 2.When the fingerprint of people is pressed above the fingerprint identification unit, make the
Electric signal in the first fingerprint detecting electrode C11 of one fingerprint detecting electrode group changes, and can also make the second fingerprint
Electric signal in the first fingerprint detecting electrode C21 of detecting electrode group changes.Therefore, it is defeated in the first signal output channels 1
The electric signal gone out is also changed, and the finger of people can be determined according to the change of the electric signal exported in the first signal output channels 1
The shape of location fingerprint corresponding with the first fingerprint detecting electrode C11 of the first fingerprint detecting electrode group (detect by the first fingerprint in line
Above the first fingerprint detecting electrode C11 of survey electrode group is ridge or the paddy of fingerprint of fingerprint)；Secondary signal output channel 2
The electric signal of middle output is also changed, and people can be determined according to the change of the electric signal exported in secondary signal output channel 2
Fingerprint in the shape of location fingerprint corresponding with the first fingerprint detecting electrode C21 of the second fingerprint detecting electrode group (second refers to
Above the first fingerprint detecting electrode C21 of line detecting electrode group is ridge or the paddy of fingerprint of fingerprint).
In the second detecting subcycle, the second fingerprint of the first fingerprint detecting electrode group detects electrode C12 to the first signal
Output channel 1 exports electric signal, and the second fingerprint of the second fingerprint detecting electrode group detects electrode C22 to secondary signal output channel
2 output electric signals.It should be appreciated that in the second detecting subcycle, the first fingerprint detecting of the first fingerprint detecting electrode group
Electrode C11, the 3rd detecting electrode C13 of the first fingerprint detecting electrode group do not export electric signal to the first signal output channels 1, and
And second fingerprint detecting electrode group the first fingerprint detecting electrode C21 and the second fingerprint detecting electrode group the 3rd detecting electrode
C23 does not export electric signal to secondary signal output channel 2.When the fingerprint of people is pressed above the fingerprint identification unit, make the
Electric signal in the second fingerprint detecting electrode C12 of one fingerprint detecting electrode group changes, and can also make the second fingerprint
Electric signal in the second fingerprint detecting electrode C22 of detecting electrode group changes.Therefore, it is defeated in the first signal output channels 1
The electric signal gone out is also changed, and the finger of people can be determined according to the change of the electric signal exported in the first signal output channels 1
The shape of location fingerprint corresponding with the second fingerprint detecting electrode C12 of the first fingerprint detecting electrode group (detect by the first fingerprint in line
Above the second fingerprint detecting electrode C12 of survey electrode group is ridge or the paddy of fingerprint of fingerprint)；Secondary signal output channel 2
The electric signal of middle output is also changed, and people can be determined according to the change of the electric signal exported in secondary signal output channel 2
Fingerprint in the shape of location fingerprint corresponding with the second fingerprint detecting electrode C22 of the second fingerprint detecting electrode group (second refers to
Above the second fingerprint detecting electrode C22 of line detecting electrode group is ridge or the paddy of fingerprint of fingerprint).
In the 3rd detecting subcycle, the 3rd of the first fingerprint detecting electrode group detects electrode C13 to the first signal output
Passage 1 exports electric signal, and the 3rd detecting electrode C23 of the second fingerprint detecting electrode group exports electricity to secondary signal output channel 2
Signal.It should be appreciated that in the 3rd detecting subcycle, the first fingerprint detecting electrode C11 of the first fingerprint detecting electrode group,
The second fingerprint detecting electrode C12 of first fingerprint detecting electrode group does not export electric signal to the first signal output channels 1, and the
The first fingerprint detecting electrode C21 of two fingerprints detecting electrode group and the 3rd detecting electrode C23 of the second fingerprint detecting electrode group are not
Electric signal is exported to secondary signal output channel 2.When the fingerprint of people is pressed above the fingerprint identification unit, make the first fingerprint
Electric signal in 3rd detecting electrode C13 of detecting electrode group changes, and the second fingerprint is detected electrode group
The 3rd detecting electrode C23 in electric signal change.Therefore, the electric signal exported in the first signal output channels 1 is also sent out
Changing, can be determined according to the change of the electric signal exported in the first signal output channels 1 in the fingerprint of people with the first fingerprint
Detect shape (the second fingerprint of the first fingerprint detecting electrode group of location fingerprint corresponding to the 3rd detecting electrode C13 of electrode group
Above detecting electrode C13 is ridge or the paddy of fingerprint of fingerprint)；The electric signal exported in secondary signal output channel 2 is also sent out
Changing, can be determined according to the change of the electric signal exported in secondary signal output channel 2 in the fingerprint of people with the second fingerprint
Detect shape (the 3rd detecting of the second fingerprint detecting electrode group of location fingerprint corresponding to the 3rd detecting electrode C23 of electrode group
Above electrode C23 is ridge or the paddy of fingerprint of fingerprint).
The fingerprint of people residence time above fingerprint identification unit is more than a detecting cycle, therefore, by a detecting
Cycle, which is divided into multiple detecting subcycles, can't influence identification to people's fingerprint.And fingerprint identification unit is detectd including multiple fingerprints
Electrode group is surveyed, the face of fingerprint of one finger of the mankind can be more than by being provided with the area in the region of multiple fingerprint detecting electrode groups
Product, therefore, the fingerprint identification unit can identify complete fingerprint on one finger of the mankind.
It is easily understood that " paddy " of fingerprint described herein refers to the part of indent on fingerprint, " ridge " of fingerprint refers to
Prominent part on fingerprint.The distance between two neighboring fingerprint detecting electrode be preferably no greater than paddy adjacent in fingerprint and ridge it
Between distance.
In figure 3 in shown embodiment, each fingerprint detecting electrode group includes multiple fingerprint detecting electrodes.Should
Understand, the present invention is not limited thereto.For example, only a fingerprint can be set to detect electricity in some fingerprints detect electrode group
Pole.Moreover, the electrode in each group fingerprint detecting electrode group can be different.According to actual conditions each fingerprint can be set to detect electricity
The quantity of fingerprint detecting electrode in the group of pole, as long as the setting quantity of signal output channels can be reduced.Preferably, Mei Gesuo
Stating fingerprint detecting electrode group all includes multiple fingerprint detecting electrodes, so as to reduce signal output channels to greatest extent
Setting.
In the present invention, the multiple fingerprints detecting electrode that can be accomplished in several ways in a fingerprint detecting electrode group
Successively electric signal is exported to corresponding signal output channels.There is provided for example, electrode can will be detected to each fingerprint for fingerprint
The signal source of the raw electrical signal of identification is arranged to provide raw electrical signal to multiple fingerprint detecting electrodes successively, and refers to
Line detects the state that electrode turns on all the time with the holding of corresponding signal output channels.Only signal source provides to fingerprint detecting electrode
During raw electrical signal, fingerprint detecting electrode could export electric signal to corresponding signal output channels.For example, when a fingerprint
When detecting electrode group includes the first fingerprint detecting electrode, the second fingerprint detecting electrode and the 3rd fingerprint detecting electrode：It can utilize
The signal source first provides raw electrical signal to the first fingerprint detecting electrode, without detecting electrode and the 3rd fingerprint to the second fingerprint
Detect electrode and raw electrical signal is provided, now, the first fingerprint detects electrode and exports electric signal, the second fingerprint to signal output channels
Detect electrode and the 3rd fingerprint detecting electrode does not export electric signal to signal output channels；Recycle the signal source first to second
Fingerprint detecting electrode provides raw electrical signal, without detecting electrode and the original electricity of the 3rd fingerprint detecting electrode offer to the first fingerprint
Signal, now, the second fingerprint detect electrode and export electric signal, the first fingerprint detecting electrode and the 3rd fingerprint to signal output channels
Detect electrode and do not export electric signal to signal output channels；Finally first provided using the signal source to the 3rd fingerprint detecting electrode
Raw electrical signal, without detecting electrode and the second fingerprint detecting electrode offer raw electrical signal to the first fingerprint, now, the 3rd refers to
Line detects electrode and exports electric signal to signal output channels, and the first fingerprint detecting electrode and the second fingerprint detect electrode not to signal
Output channel exports electric signal.Such then achievable first fingerprint detecting electrode, the second fingerprint detecting electrode and the 3rd fingerprint are detectd
Survey electrode and export electric signal to the signal output channels successively.
Or the signal source can be arranged to continue to provide the electric signal to each fingerprint detecting electrode, meanwhile,
As shown in figure 3, the fingerprint identification unit can include the fingerprint detecting electrode group of multiple fingerprint detecting electrodes also
Including each fingerprint in multiple switch element, including the fingerprint detecting electrode group of multiple fingerprint detecting electrodes
Detecting electrode is corresponding with a switch element, and the switch element will the corresponding fingerprint detecting electrode and the driving
Circuit selectively turns on.
It is easily understood that when a switching elements conductive, remaining switch element is simultaneously not turned on, fingerprint detecting
Electric signal in electrode can be transferred to corresponding signal output channel by the switch element of conducting.
As a kind of preferred embodiment of the present invention, the fingerprint identification unit can also include drive circuit, the drive
Dynamic circuit can export the control signal for causing the switching elements conductive or cut-off.In this case, as shown in Figure 3,
The switch element can be thin film transistor (TFT), and the grid of the switch element is connected with the output end of the drive circuit, institute
The source electrode for stating switch element is connected with the corresponding fingerprint detecting electrode, the drain electrode of the switch element and the corresponding letter
Number output channel is connected.
As a kind of preferred embodiment of the present invention, when each fingerprint detecting electrode group includes multiple fingers
When line detects electrode, as shown in figure 3, the drive circuit includes multiple drive circuit units of cascade, multiple driving electricity
The output end of road unit is connected correspondingly with the grid of multiple switch elements.
In the present invention, the drive circuit can be shift register, and the drive circuit unit can be to think to post
Shift register cell in storage, multiple drive circuit units are concatenated together, so as to be followed successively by a fingerprint detecting
Multiple fingerprints detecting electrode in electrode group provides control signal.As illustrated, the drive circuit also includes timing sequencer
3, the timing sequencer 3 can provide the first clock signal CLK and the second clock signal CLKB.
As shown in Figure 3, example introduction switchs exemplified by detecting electrode group and the second fingerprint detecting electrode group with the first fingerprint
The operation principle of element.In the embodiment shown in Fig. 3, switch element is formed as thin film transistor (TFT).
Switch element T11 and drive circuit unit D11 corresponds to the first fingerprint detecting electricity of the first fingerprint detecting electrode group
Pole C11, switch element T12 and drive circuit unit D12 correspond to the second fingerprint detecting electrode of the first fingerprint detecting electrode group
C12, switch element T13 and drive circuit unit D13 correspond to the 3rd fingerprint detecting electrode of the first fingerprint detecting electrode group
C13.Switch element T21 and drive circuit unit D21 corresponds to the first fingerprint detecting electrode of the second fingerprint detecting electrode group
C21, switch element T22 and drive circuit unit D22 correspond to the second fingerprint detecting electrode of the second fingerprint detecting electrode group
C22, switch element T23 and drive circuit unit D23 correspond to the 3rd fingerprint detecting electrode of the second fingerprint detecting electrode group
C23.Drive circuit D11, drive circuit D12, drive circuit D13 cascades are set, and form shift register.
When drive circuit D11 detects the corresponding switches of electrode C11 to the first fingerprint that electrode group is detected with the first fingerprint
When element T11 exports high level, the switch element corresponding with the first fingerprint detecting electrode C11 of the first fingerprint detecting electrode group
T11 source electrode and drain electrode turn on, and the electric signal in the first fingerprint detecting electrode C11 of the first fingerprint detecting electrode group can export
To the first signal output channels 1.Simultaneously, drive circuit D12, drive circuit D13 export low level, therefore, switch member
Part T12, switch element T13 all in cut-off state, the first fingerprint detecting electrode group the second fingerprint detecting electrode C12 and
The 3rd fingerprint detecting electrode C13 of first fingerprint detecting electrode group does not export electric signal to the first signal output channels 1.
Because drive circuit D11, drive circuit D12, drive circuit D13 cascade to form shift register, therefore, driving electricity
Road D11, drive circuit D12 and drive circuit D13 sequentially export high level, can make switch element T11, switch element T12 and
Switch element T13 is sequentially turned on, and then causes the first fingerprint detecting electrode C11, the second fingerprint of the first fingerprint detecting electrode group
Detect electrode C12 and the 3rd fingerprint detecting electrode C13 sequentially exports electric signal to the first signal output channels 1.
When drive circuit D21 detects the corresponding switches of electrode C21 to the first fingerprint that electrode group is detected with the second fingerprint
When element T21 exports high level, the switch element corresponding with the first fingerprint detecting electrode C21 of the second fingerprint detecting electrode group
T21 source electrode and drain electrode turn on, and the electric signal in the first fingerprint detecting electrode C21 of the second fingerprint detecting electrode group can export
To secondary signal output channel 2.Simultaneously, drive circuit D22, drive circuit D23 export low level, therefore, switch member
Part T22, switch element T23 all in cut-off state, the second fingerprint detecting electrode group the second fingerprint detecting electrode C22 and
The 3rd fingerprint detecting electrode C23 of second fingerprint detecting electrode group does not export electric signal to secondary signal output channel 2.
Because drive circuit D21, drive circuit D22, drive circuit D23 cascade to form shift register, therefore, driving electricity
Road D21, drive circuit D22 and drive circuit D23 sequentially export high level, can make switch element T21, switch element T22 and
Switch element T23 is sequentially turned on, and then causes the first fingerprint detecting electrode C21, the second fingerprint of the second fingerprint detecting electrode group
Detect electrode C22 and the 3rd fingerprint detecting electrode C23 sequentially exports electric signal to secondary signal output channel 2.
The quantity of fingerprint recognition electrode is more, then the fingerprint identified is more accurate.In the present invention, a line fingerprint can be set
Electrode group is detected, when identifying fingerprint, the finger of people moves along the orientation perpendicular to fingerprint detecting electrode, you can identification is whole
Individual fingerprint.In order to improve the degree of accuracy of the fingerprint identification unit identification fingerprint, it is preferable that as shown in figure 4, multiple fingerprints
Detecting electrode arrangement is multirow, in this case, directly presses in fingerprint identification unit finger, refers to without movement
Line.
The fingerprint detecting electrode group for being arranged as two rows is shown in Fig. 4.The first row is included in the first fingerprint detecting electrode group
The first fingerprint detecting electrode C11, the second fingerprint detecting electrode C12 in the first fingerprint detecting electrode group, the detecting of the first fingerprint
The first fingerprint in the 3rd fingerprint detecting electrode C13, the second fingerprint detecting electrode group in electrode group detects electrode C21, second
The 3rd fingerprint detecting electrode in the second fingerprint detecting electrode C22 and the second fingerprint detecting electrode group in fingerprint detecting electrode group
C23；The first fingerprint detecting electrode C31, the 3rd fingerprint that second row is included in the 3rd fingerprint detecting electrode group are detected in electrode group
The second fingerprint detecting electrode C32, the 3rd fingerprint detecting electrode C33 in the 3rd fingerprint detecting electrode group, the detecting of the 4th fingerprint
The second fingerprint detecting electrode C42 and the 4th in the first fingerprint detecting electrode C41, the 4th fingerprint detecting electrode group in electrode group
The 3rd fingerprint detecting electrode C43 in fingerprint detecting electrode group.
As another aspect of the present invention, there is provided a kind of electronic equipment, the electronic equipment include fingerprint identification unit, its
In, the fingerprint identification unit is above-mentioned fingerprint identification unit provided by the present invention.The electronic equipment can be that gate inhibition sets
It is standby etc..
Preferably, the electronic equipment includes display panel, the fingerprint identification unit can be arranged on into the display surface
On plate.
When the display panel is liquid crystal display panel, the display panel includes liquid crystal cell and is covered in the liquid crystal
Transparency carrier (the acting as protecting the liquid crystal cell of transparency carrier) on the exiting surface of box, it is described as a kind of embodiment
Fingerprint detecting electrode can be arranged between the exiting surface of the transparency carrier and the liquid crystal cell.As another embodiment party
Formula, the fingerprint detecting electrode are arranged on the outer surface of the transparency carrier.
Liquid crystal cell includes array base palte and the color membrane substrates set with array base palte to box, in the present invention, can also incite somebody to action
Fingerprint detecting electrode is set directly on the color membrane substrates of liquid crystal cell.
In order to not influence display effect, it is preferable that fingerprint can be detected to the clear area that electrode is arranged on display panel
(fan-out areas), it should be appreciated that the clear area of display panel is arranged on around the effective display area of display panel.
Fingerprint detecting electrode is arranged between the transparency carrier and the liquid crystal cell and is advantageous to protect the fingerprint to know
Other unit, fingerprint detecting electrode is arranged on and is advantageous to increase the sensitive of fingerprint recognition on the outer surface of the transparency carrier
Degree and accuracy.User can set the set location of the fingerprint detecting electrode according to application scenario.
In the fingerprint detecting electrode group including multiple fingerprint detecting electrodes, multiple fingerprint detecting electrodes share one
Signal output channels, so as to reduce the total quantity of the fingerprint set in the fingerprint identification unit detecting electrode, be advantageous to
The fingerprint identification unit is arranged in less space, and then is advantageously implemented the miniaturization of the electronic equipment.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, but the invention is not limited in this.For those skilled in the art, the essence of the present invention is not being departed from
In the case of refreshing and essence, various changes and modifications can be made therein, and these variations and modifications are also considered as protection scope of the present invention.
Claims (7)
1. a kind of fingerprint identification unit, the fingerprint identification unit includes fingerprint recognition circuit and at least one fingerprint detecting electrode
Group, it is characterised in that at least one fingerprint detecting electrode group includes multiple fingerprints detecting electrode, the fingerprint identification unit
Including the multiple signal output channels being connected with the fingerprint recognition circuit, the corresponding institute of fingerprint detecting electrode group described in every group
Signal output channels are stated, to export the electric signal in fingerprint detecting electrode group described in every group in each fingerprint detecting electrode,
Multiple fingerprint detecting electrodes in fingerprint detecting electrode group including multiple fingerprint detecting electrodes can be successively
To the corresponding signal output channels output electric signal, and in the fingerprint detecting for including multiple fingerprint detecting electrodes
In electrode group, all fingerprints detecting electrode is connected with the corresponding signal output channels, the signal output channels
Can be according to the electricity received by the electric signal output received to the fingerprint recognition circuit, the fingerprint recognition circuit
Signal determines the pattern of fingerprint；
The fingerprint identification unit also includes the fingerprint detecting electrode group of multiple fingerprint detecting electrodes also including multiple
Each fingerprint detecting electrode in switch element, including the fingerprint detecting electrode group of multiple fingerprint detecting electrodes
A switch element is corresponding with, the switch element will the fingerprint detecting electrode and the corresponding signal be defeated accordingly
Turn on going out channel selectivity,
The fingerprint identification unit also includes drive circuit, the drive circuit can export so that the switching elements conductive or
The control signal of cut-off, the switch element include thin film transistor (TFT), the grid of the switch element and the drive circuit
Output end is connected, and the source electrode of the switch element is connected with the corresponding fingerprint detecting electrode, the drain electrode of the switch element
It is connected with the corresponding signal output channels, the drive circuit includes multiple drive circuit units of cascade, multiple described
The output end of drive circuit unit is connected correspondingly with the grid of multiple switch elements.
2. fingerprint identification unit according to claim 1, it is characterised in that each fingerprint detecting electrode group includes
Multiple fingerprint detecting electrodes.
3. fingerprint identification unit according to claim 1, it is characterised in that multiple fingerprint detecting electrode arrangements are more
OK.
4. a kind of electronic equipment, the electronic equipment includes fingerprint identification unit, it is characterised in that the fingerprint identification unit is power
Profit requires the fingerprint identification unit described in any one in 1 to 3.
5. electronic equipment according to claim 4, it is characterised in that the electronic equipment includes display panel, the fingerprint
Recognition unit is set on said display panel.
6. electronic equipment according to claim 5, it is characterised in that the display panel includes liquid crystal cell and is covered in institute
State the transparency carrier on the exiting surface of liquid crystal cell, the fingerprint detecting electrode is arranged on the transparency carrier and the liquid crystal cell
Between exiting surface.
7. electronic equipment according to claim 5, it is characterised in that the display panel includes liquid crystal cell and is covered in institute
The transparency carrier on the exiting surface of liquid crystal cell is stated, the fingerprint detecting electrode is arranged on the outer surface of the transparency carrier.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410270076.6A CN104077565B (en) | 2014-06-17 | 2014-06-17 | Fingerprint identification unit and electronic equipment |
| PCT/CN2014/087818 WO2015192537A1 (en) | 2014-06-17 | 2014-09-29 | Fingerprint identification unit and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410270076.6A CN104077565B (en) | 2014-06-17 | 2014-06-17 | Fingerprint identification unit and electronic equipment |
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| Publication Number | Publication Date |
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| CN104077565A CN104077565A (en) | 2014-10-01 |
| CN104077565B true CN104077565B (en) | 2018-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410270076.6A Active CN104077565B (en) | 2014-06-17 | 2014-06-17 | Fingerprint identification unit and electronic equipment |
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| Country | Link |
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| CN (1) | CN104077565B (en) |
| WO (1) | WO2015192537A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107203735B (en) * | 2016-03-17 | 2020-03-06 | 上海和辉光电有限公司 | Fingerprint identification mechanism and electronic device thereof |
| CN106056047B (en) | 2016-05-20 | 2019-06-14 | 京东方科技集团股份有限公司 | Fingerprint recognition circuit, touch device and fingerprint identification method |
| CN106250849B (en) * | 2016-08-01 | 2019-06-04 | 京东方科技集团股份有限公司 | Fingerprint identification device and preparation method thereof, display equipment |
| CN106326859B (en) * | 2016-08-23 | 2019-11-01 | 京东方科技集团股份有限公司 | Fingerprint recognition driving circuit, array substrate, display device and fingerprint identification method |
| CN106682640B (en) | 2017-01-04 | 2019-04-05 | 京东方科技集团股份有限公司 | Fingerprint recognition circuit and its driving method, display device |
| CN109358706B (en) * | 2018-10-30 | 2021-09-28 | 厦门天马微电子有限公司 | Display panel and display device |
| WO2022067516A1 (en) * | 2020-09-29 | 2022-04-07 | 京东方科技集团股份有限公司 | Fingerprint identification substrate and driving method therefor and display device |
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| CN1125872A (en) * | 1994-12-26 | 1996-07-03 | 陈文辉 | Semi-conductor integrated detector for abstrating fingerprints pattern |
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| CN103530609A (en) * | 2013-10-11 | 2014-01-22 | 北京京东方光电科技有限公司 | Fingerprint identification element, display screen and display device |
| CN103647913A (en) * | 2013-12-24 | 2014-03-19 | 中国科学院半导体研究所 | Field programmable gate array (FPGA) based multichannel high-speed image data acquisition and storage system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102859476B (en) * | 2010-11-11 | 2016-01-20 | 宸鸿科技(厦门)有限公司 | Uniaxially capacitance type multi-point touch-control system and touch control method thereof |
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| CN1125872A (en) * | 1994-12-26 | 1996-07-03 | 陈文辉 | Semi-conductor integrated detector for abstrating fingerprints pattern |
| CN102566840A (en) * | 2010-11-02 | 2012-07-11 | 爱特梅尔公司 | Capacitive sensor, device and method |
| CN103530609A (en) * | 2013-10-11 | 2014-01-22 | 北京京东方光电科技有限公司 | Fingerprint identification element, display screen and display device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104077565A (en) | 2014-10-01 |
| WO2015192537A1 (en) | 2015-12-23 |
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