CN108875634A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN108875634A CN108875634A CN201810631275.3A CN201810631275A CN108875634A CN 108875634 A CN108875634 A CN 108875634A CN 201810631275 A CN201810631275 A CN 201810631275A CN 108875634 A CN108875634 A CN 108875634A
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- signal
- fingerprint
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- display panel
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3674—Details of drivers for scan electrodes
- G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
Abstract
The invention discloses a kind of display panel and display device, which includes：Scan line, data line, fingerprint sensor, scan drive circuit, data drive circuit and control unit, scan drive circuit includes shift register and signal selecting circuit, wherein, shift register includes multiple shifting deposit units, signal selecting circuit includes multiple signal behavior units, the selection signal input terminal of each signal behavior unit receives the scanning signal of shifting deposit unit output, control unit is within the first scan period, at least display enable signal is exported to the signal control terminal of the first signal behavior unit, and it controls data drive circuit and at least exports default brush black voltage signal to the first data line, fingerprint enable signal at least is exported to the signal control terminal of the first signal behavior unit within the second scan period.By means of the invention it is possible to reduce display floater frame while promoting accuracy of fingerprint identification.
Description
Technical field
The present invention relates to field of display technology, more particularly, to a kind of display panel and display device.
Background technique
Fingerprint is inherent for everyone, with the development of science and technology, occurring a variety of have in the market
The display device of fingerprint identification function, such as mobile phone, tablet computer and intelligent wearable device.User has fingerprint in operation
Before the display device of identification function, it is only necessary to can be carried out Authority Verification with finger touch display unit, simplify permission and test
Card process, also, gradually increasing with fingerprint identification function application scenarios, fingerprint identification region is gradually developed by partial region
For full frame identification.
In the existing display device based on optical fingerprint identification technology, fingerprint Identification sensor is based on semiconductor devices
It is formed, realizes fingerprint detection using the characteristic that semiconductor devices can be generated leakage current by illumination, specifically, fingerprint recognition light source produces
After raw light reflects on the surface of finger and display device touch-control, reflection light is irradiated to fingerprint Identification sensor, refers to
Line identification sensor come detect due to fingerprint valley spike move bring light intensity, to generate dactylogram.But the prior art
Fingerprint Identification sensor also receives other interference lights in addition to receiving reflection light in middle fingerprint identification process, interferes light
Line will lead to the reduction of fingerprint recognition accuracy.
Therefore it provides a kind of display panel and display device, carry out the accurate of fingerprint recognition to improve on a display panel
Property, it is this field urgent problem to be solved.
Summary of the invention
In view of this, solving display panel in the prior art the present invention provides a kind of display panel and display device
The lower technical problem of fingerprint recognition accuracy.
In order to solve the above-mentioned technical problem, the present invention proposes a kind of display panel.
The display panel includes：Scan line and data line；Fingerprint recognition array, including several fingerprint sensors；Scanning is driven
Dynamic circuit, including shift register and signal selecting circuit, wherein the shift register includes multiple shifting deposit units,
Each shifting deposit unit is sequentially output scanning signal within a scan period, and the signal selecting circuit includes multiple letters
Number selecting unit, the signal behavior unit include selection signal input terminal, signal control terminal, display scanning output end and fingerprint
Scanning output end, it is defeated that the selection signal input terminal of each signal behavior unit receives a shifting deposit unit
Scanning signal out, the display scanning output end are electrically connected with the scan line, the finger scan output end and the finger
The electrical connection of line sensor, when the signal control terminal receives display enable signal, the display scanning output end and the choosing
Select signal input part conducting, when the signal control terminal receives fingerprint enable signal, the finger scan output end with it is described
The conducting of selection signal input terminal；Data drive circuit is electrically connected with the data line；Control unit, with the turntable driving electricity
The signal control terminal on road and the data drive circuit are electrically connected, within the first scan period, at least to the
The signal control terminal of one signal behavior unit exports the display enable signal, and controls the data drive circuit at least
Default brush black voltage signal is exported to the first data line, at least to the first signal behavior unit within the second scan period
The signal control terminal exports the fingerprint enable signal, wherein first scan period is and second scan period
The adjacent previous scan period, the first signal behavior unit are and the fingerprint sensor in fingerprint reception area
The signal behavior unit of electrical connection, first data line are the corresponding data line of the fingerprint reception area.
In order to solve the above-mentioned technical problem, the present invention proposes a kind of display device.
Display device provided by the invention includes any one display panel provided by the invention.
Compared with prior art, display panel of the invention and display device realize following beneficial effect：Scanning is driven
Dynamic circuit drives finger scan and display scanning simultaneously, can reduce the width in display floater frame area, and it is real to be conducive to display panel
Existing narrow frame, meanwhile, by being uniformly controlled for scan drive circuit, before carrying out fingerprint recognition, first pass through display scanning
Control is black by the display pixel brush in fingerprint reception area, then carries out fingerprint recognition by the control of finger scan again, to avoid
When carrying out fingerprint recognition, influence of the light of the display pixel in fingerprint reception area to fingerprint recognition is able to ascend display surface
The fingerprint recognition accuracy of plate.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Detailed description of the invention
It is combined in the description and the attached drawing for constituting part of specification shows the embodiment of the present invention, and even
With its explanation together principle for explaining the present invention.
Fig. 1 is the overlooking structure diagram for the display panel that the prior art provides；
Fig. 2 is the film layer structure schematic diagram for the display panel that the prior art provides；
Fig. 3 is the structural schematic diagram of display panel described in the embodiment of the present invention；
Fig. 4 is a kind of schematic illustration of the pixel circuit of display panel of the embodiment of the present invention；
Fig. 5 is the schematic illustration of the pixel circuit of another display panel of the embodiment of the present invention；
Fig. 6 is a kind of schematic illustration of the scan drive circuit of display panel of the embodiment of the present invention；
Fig. 7 is the schematic illustration of the scan drive circuit of another display panel of the embodiment of the present invention；
Fig. 8 to Figure 10 is the schematic diagram of the fingerprint reception area of the display panel of the embodiment of the present invention；
Figure 11 is shifting deposit unit and signal behavior list in the scan drive circuit of the display panel of the embodiment of the present invention
The connection schematic diagram of member；
Figure 12 is the control sequential figure of the display panel of the embodiment of the present invention；
Figure 13 is a kind of circuit diagram of the shifting deposit unit of display panel of the embodiment of the present invention；
Figure 14 is the circuit diagram of the shifting deposit unit of another display panel of the embodiment of the present invention；
Figure 15 is the structural schematic diagram of display device described in the embodiment of the present invention.
Specific embodiment
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should be noted that：Unless in addition having
Body explanation, the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to the present invention
And its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
In order to improve the fingerprint recognition accuracy of display panel, inventor has carried out following research：Fig. 1 is the prior art
The overlooking structure diagram of the display panel of offer, Fig. 2 are the film layer structure schematic diagram for the display panel that the prior art provides, such as
Shown in Fig. 1 and Fig. 2, in a kind of display panel of the prior art, display panel has viewing area AA' and rim area BA',
In, there are several display pixel sp', rim area BA' to be provided with display scan drive circuit SSC' and data-driven in the AA' of viewing area
Circuit DC', display scan drive circuit SSC' provide display scanning signal to display pixel sp' via scan line S1', and data are driven
Dynamic circuit DC' provides data-signal to display pixel sp' via data line D'.For a display pixel sp', receive simultaneously
When showing scanning signal and data-signal, according to the current or voltage size that data-signal provides, carries out grayscale and show.
Meanwhile viewing area AA' is additionally provided with fingerprint Identification sensor fs', rim area BA' is additionally provided with finger scan driving
Circuit FSC' and fingerprint recognition circuit FC', finger scan driving circuit FSC' are via scan line S2' to fingerprint Identification sensor
Fs' provides finger scan signal, and fingerprint recognition circuit FC' receives fingerprint Identification sensor fs' via fingerprint signal line F' and obtains
Fingerprint signal, to carry out fingerprint recognition, for a fingerprint Identification sensor fs', when it receives finger scan signal,
The fingerprint signal obtained is exported to fingerprint recognition circuit FC', realizes fingerprint recognition.
Wherein, on the one hand, as shown in Figure 1, under normal circumstances, showing scan drive circuit SSC' and finger scan driving electricity
Road FSC' is all set in left and right side frame, so that the frame of display panel is wider, is unfavorable for realizing narrow frame, on the other hand, such as Fig. 2
Shown, the light that fingerprint Identification sensor fs' is received includes the reflected light that fingerprint Identification sensor fs' is reflected back at finger
Line L1', meanwhile, it further include after the light that generates of display pixel sp' reflect and/or reflected in display panel into fingerprint recognition
The light L2' of sensor fs', and this light L2' is not substantially real fingerprint signal, generates interference to fingerprint recognition,
This part interference light can reduce the accuracy of fingerprint recognition.
Based on the studies above, present applicant proposes a kind of display panel and including the display device of the display panel, to reach
To the purpose of the frame sector width for reducing display panel simultaneously and the interference for reducing fingerprint recognition signal, not only it is conducive to display panel
It realizes narrow frame, while being able to ascend the fingerprint recognition accuracy of display panel.There is above-mentioned technology about provided by the present application
The display panel of effect, detailed description are as follows.
Fig. 3 is the structural schematic diagram of the display panel of the embodiment of the present invention, in one embodiment, as shown in figure 3, this is aobvious
Show that panel has viewing area AA and rim area BA, wherein several display pixel sp in array distribution in the AA of viewing area, display surface
Plate shows image by display pixel sp；Meanwhile display panel further includes fingerprint recognition array, fingerprint recognition array includes several
Fingerprint sensor fs, display panel carry out fingerprint recognition by fingerprint sensor fs.Need to illustrate when, show shown in Fig. 3
The case where showing the quantity and arrangement of pixel and fingerprint sensor, only schematically illustrating fingerprint sensor and display pixel, not
Constitute the improper restriction to the application.
In rim area, BA is provided with scan drive circuit SC and IC chip IC, wherein display scanning and fingerprint are known
Sao Miao not share scan drive circuit SC, integrated circuit die I C be integrated with data drive circuit DC, fingerprint recognition circuit FC and
Control unit CU, alternatively, data drive circuit DC, fingerprint recognition circuit FC and control unit CU can be independently arranged, the application
It is not limited thereto.
About the display portion of display panel, as shown in figure 3, corresponding display pixel sp, display panel includes several pixels
Circuit (not shown) further includes display scan line S1 and data line D, pixel circuit and display scan line S1 and data line D
Be electrically connected, display scan line S1 simultaneously be electrically connected with scan drive circuit SC, data line D at the same with data drive circuit DC
Electrical connection, scan drive circuit SC will show that scanning drive signal is transferred to pixel circuit, data-driven through display scan line S1
Data drive signal is transferred to pixel circuit through data line D by circuit DC, and it is aobvious to control each display pixel sp by pixel circuit
The grayscale shown, and then realize that image is shown.
Specifically, in liquid crystal display panel, display panel includes opposed array substrate, color membrane substrates and is set to battle array
Liquid crystal layer between column substrate and color membrane substrates corresponds to display pixel sp in array substrate and is provided with pixel electrode, while array
Public electrode is additionally provided on substrate or color membrane substrates, Fig. 4 is a kind of pixel circuit of display panel of the embodiment of the present invention
Schematic illustration, as shown in figure 4, pixel circuit switch transistor T 1, switch transistor T 1 includes grid G, source level S and drain electrode L, display scanning
Line S1 is electrically connected with the grid G of switch transistor T 1, and data line D is electrically connected with the source level S of switch transistor T 1, the drain electrode L of switch transistor T 1 with
Pixel electrode P is connected, when scan drive circuit SC provides display scanning to the grid G of switch transistor T 1 by display scan line S1
When driving signal, conductive channel is formed between the source level S and drain electrode L of switch transistor T 1, at this point, data drive circuit DC can pass through
Data line D exports data drive signal to pixel electrode P, so that being formed between pixel electrode P and public electrode C makes liquid crystal layer
The electric field of interior liquid crystal molecule deflection, after liquid crystal molecule deflects, the light light transmission of the backlight generation applied to display panel
Liquid crystal molecule and be emitted to color membrane substrates, display pixel sp is corresponded on color membrane substrates and is provided with color blocking, light enters by color blocking
Human eye, data drive signal are different, and the electric field strength formed between pixel electrode P and public electrode C is different, liquid crystal molecule it is inclined
Carryover degree is different, and then passes through how much differences that color blocking enters the light of human eye, realizes the display of different grayscale.
In organic light emitting display panel, display panel includes array substrate, organic light emitting material and encapsulated layer,
In, display pixel sp is corresponded in array substrate and is provided with anode, pixel defining layer is provided on anode, pixel defining layer is every
There is the opening of exposure anode, the luminescent material of organic light emitting material is set in the opening, is having on the position of a anode
It is covered with common cathode on machine luminous material layer, encapsulated layer is located at side of the common cathode far from organic light emitting material, anode,
Organic light emitting material and common cathode form organic luminescent device, when applying driving current to the anode of organic luminescent device,
Organic luminescent device shines, and driving current is different, and the luminous degree of organic luminescent device is different, realizes the display of different grayscale.
Specifically, Fig. 5 is the schematic illustration of the pixel circuit of another display panel of the embodiment of the present invention, as shown in figure 5, pixel
Circuit includes Data write. module 01, control module 02, keeps module 03 and a driving tube T2, is used for organic luminescent device
OD provides driving current, wherein each module is made of several switching tubes and/or capacitor, specifically partially can refer in the prior art
Pixel circuit, be no longer described in detail at this.Display scan line S1 and data line D is electrically connected with Data write. module 01 respectively, is driven
Pipe T2 is electrically connected with organic luminescent device OD, in turn off phase, the control terminal write control signal ctrl of control module 02, control
Module 02 is connected, and is inputted the grid of the pick-off signal vt write driver pipe T2 of end input, and control driving tube T2 has been worked in
Full cut-off region.Then, control module 02 is turned off according to the control signal that its control terminal is written, and scan drive circuit SC passes through aobvious
Show that scan line S1 will show the control terminal of scanning drive signal write-in Data write. module 01, Data write. module 01 is connected, number
Can be by data line D by the grid of data drive signal write driver pipe T2 according to driving circuit DC, driving tube T2 is according to its grid
The data-signal of pole write-in generates corresponding driving current, and driving current drives organic luminescent device OD luminescence display.Meanwhile it protecting
The grid voltage that module 03 keeps driving tube T2 is held, driving tube T2 generates driving current persistently to drive organic luminescent device OD to hold
Supervention light.
About fingerprint recognition part, several fingerprint sensor fs, in viewing area AA, can also be distributed in simultaneously in array distribution
Rim area BA, the application do not limit this, and the application is mainly for the fingerprint sensor fs being distributed in the AA of viewing area.Display
Panel further includes finger scan line S2 and fingerprint signal line F, fingerprint sensor fs and finger scan line S2 and fingerprint signal line F
It is electrically connected, finger scan line S2 is electrically connected with scan drive circuit SC simultaneously, and fingerprint signal line F is electric with fingerprint recognition simultaneously
Road FC electrical connection, scan drive circuit SC provide finger scan driving letter to fingerprint Identification sensor fs via finger scan line S2
Number, fingerprint recognition circuit FC receives the fingerprint signal that fingerprint Identification sensor fs is obtained via fingerprint signal line F, to carry out fingerprint
Identification, for a fingerprint Identification sensor fs, when it receives finger scan driving signal, the fingerprint signal that is obtained
Output realizes fingerprint recognition to fingerprint recognition circuit FC.
Fig. 6 is a kind of schematic illustration of the scan drive circuit of display panel of the embodiment of the present invention, and Fig. 7 is the present invention
The schematic illustration of the scan drive circuit of another display panel of embodiment, wherein it should be noted that in Fig. 6 and Fig. 7
The position of two routes intersection illustrates that two routes are not electrically connected by " X ".It is aobvious about that can either be provided to display scan line S1
Show scanning drive signal, and the scan drive circuit SC, such as Fig. 6 of finger scan driving signal can be provided to finger scan line S2
With shown in Fig. 7, scan drive circuit includes shift register 10 and signal selecting circuit 20, wherein shift register 10 includes N
A successively cascade shifting deposit unit, respectively shifting deposit unit 11, shifting deposit unit 12, shifting deposit unit 13 ...
Shifting deposit unit 1N, each shifting deposit unit successively export scanning signal, signal behavior electricity respectively within a scan period
Road 20 includes multiple signal behavior units, wherein when display panel can realize full frame fingerprint recognition, as shown in fig. 6, setting letter
Number selecting unit and shifting deposit unit correspond, and signal selecting circuit 20 includes N number of signal behavior unit, respectively signal
Selecting unit 21, signal behavior unit 22, signal behavior unit 23 ... signal behavior unit 2N；When display panel is only in part
When fixed area realizes fingerprint recognition, then only in required fixed position setting signal selecting unit and transposition of partial deposit unit
It corresponds, signal selecting circuit 20 includes M signal behavior unit, respectively signal behavior unit 21, signal behavior unit
22, signal behavior unit 23 ... signal behavior unit 2M, wherein M is less than N, namely, it is only necessary in the area for needing to realize fingerprint recognition
Shifting deposit unit setting signal selecting unit corresponding to domain, setting signal selection circuit 20 includes 2 signal behaviors in Fig. 7
Unit, respectively signal behavior unit 21 and signal behavior unit 22, and successively posted respectively with shifting deposit unit 12 and displacement
Memory cell 13 is correspondingly connected with.
Each signal behavior cellular construction in signal selecting circuit 20 is similar, as shown in fig. 6, with signal selecting circuit 20
In second signal behavior unit 22 for, signal behavior unit 22 include selection signal input terminal CI2, signal control terminal
C2, display scanning output end SO2 and finger scan output end FO2, the selection signal input terminal of each signal behavior unit receive
The scanning signal of one shifting deposit unit output, for example, the selection signal input terminal CI2 of second signal behavior unit 22 connects
Receive the scanning signal that second level shifting deposit unit 12 exports.
As shown in fig. 6, continuing by taking second signal behavior unit 22 as an example, display scanning output end SO2 and display are scanned
Line S12 electrical connection, finger scan output end FO2 are electrically connected through finger scan line S22 with fingerprint sensor, and signal control terminal C2 connects
Enable signal EN is received, enable signal EN includes display enable signal and fingerprint enable signal.When enable signal EN is that display is enabled
When signal, display scanning output end SO2 is connected with selection signal input terminal CI2, so that the scanning that shifting deposit unit 12 exports
Signal realizes display scanning, wherein every grade is shifted through second output of signal behavior unit 22 to display scan line S12
Deposit unit drives the case where display scan line, and display scanning output end is electrically connected with a display scan line, for one
The case where grade shifting deposit unit drives a plurality of display scan line, display scanning output end can be swept by deconcentrator and a plurality of display
Retouch line electrical connection.When enable signal EN is fingerprint enable signal, finger scan output end FO2 and selection signal input terminal CI2
Conducting, so that the scanning signal that shifting deposit unit 12 exports is through second output of signal behavior unit 22 to finger scan line
S22 namely fingerprint sensor realize finger scan, wherein enable signal EN is provided by control unit CU.
Control unit CU is electrically connected with the signal control terminal of scan drive circuit SC, to provide above-mentioned make to signal control terminal
Energy signal EN, wherein control unit CU is settable to provide one or more ports of enable signal EN.Specifically, the control list
First CU at least exports display enable signal to the signal control terminal of the first signal behavior unit within the first scan period, and controls
Data drive circuit processed at least exports default brush black voltage signal to the first data line, at least to first within the second scan period
The signal control terminal of signal behavior unit exports fingerprint enable signal, wherein the first scan period was and the second scan period phase
Adjacent previous scan period, the first signal behavior unit are the signal choosing being electrically connected with the fingerprint sensor in fingerprint reception area
Unit is selected, the first data line is the corresponding data line of fingerprint reception area.
For being able to carry out the touch-control display panel of full frame fingerprint recognition, the viewing area of touch-control display panel is additionally provided with touching
Electrode is controlled, integrated circuit die I C further includes touch control circuit, the touching that touch control circuit can be detected according to touch control electrode
Signal is controlled, determines the position of fingerprint reception area on a display panel, and then determines the fingerprint sensor in fingerprint reception area and shows
Show pixel, the signal behavior unit being electrically connected with these fingerprint sensors is above-mentioned first signal behavior unit, drives these aobvious
The data line for showing pixel is the corresponding data line of fingerprint reception area namely the first data line.
Alternatively, the master control borad of display device can be according to current aobvious for the display panel for being able to carry out full frame fingerprint recognition
The content shown determines the position of fingerprint reception area on a display panel, for example, for Mr. Yu's payment application, in fingerprint inspection
It demonstrate,proves on the page, fingerprint reception area is fixed on some position of display window, when the content that display device is currently shown is the payment
When the fingerprint authentication page of application program, determine fingerprint reception area aobvious in the fixation position of display window according to fingerprint reception area
Show the position on panel, and then determine fingerprint sensor and display pixel in fingerprint reception area, with these fingerprint sensors electricity
The signal behavior unit of connection is above-mentioned first signal behavior unit, and driving the data line of these display pixels is fingerprint reception area
Corresponding data line namely the first data line.
Alternatively, being the display panel of fingerprint reception area for setting unit region, passed with the fingerprint in the fingerprint reception area
The signal behavior unit of sensor electrical connection is above-mentioned first signal behavior unit, drives the display pixel in the fingerprint reception area
Data line is the first data line.
No matter which kind of mode the first signal behavior unit and the first data line are determined by, in this embodiment, first
In scan period, control unit CU exports display enable signal to the signal control terminal of the first signal behavior unit, so that with the
The display scan line S1 that one signal behavior unit is connected can receive display scanning signal, meanwhile, control data-driven electricity
Road DC at least exports default brush black voltage signal to the first data line DA, so that the display pixel spA of the first data line DA driving
When receiving the default brush black voltage signal, 0 grayscale is shown or substantially close to 0 grayscale, thus, within the first scan period,
Display pixel spA in fingerprint reception area FA all shows 0 grayscale or substantially close to 0 grayscale, reaches and brushes fingerprint reception area FA
Black purpose.Within the second scan period, control unit CU makes to the signal control terminal of the first signal behavior unit output fingerprint
Energy signal, enables the finger scan line S2 being connected with the first signal behavior unit to receive finger scan signal, at this point,
Fingerprint signal can be transferred to fingerprint recognition circuit FC through fingerprint signal line F by the fingerprint Identification sensor in fingerprint reception area,
Carry out fingerprint recognition.First scan period was the previous scan period adjacent with the second scan period, due in the first scanning
Fingerprint reception area is brushed black in period, thus, the display when the second scan period carrying out fingerprint recognition, in fingerprint reception area
Pixel no longer shine, avoid this part display pixel generate light enter fingerprint Identification sensor and caused by fingerprint recognition
Interference, is able to ascend the accuracy of fingerprint recognition.Wherein, after the first scan period, can continue to be arranged one or more
Second scan period was subject to and completes the identification that fingerprint recognition acts.
In a kind of specifically embodiment, in conjunction with Fig. 3 and Fig. 6, it is located at the 2nd to the 3rd row and the 2nd to the 3rd column fingerprint sensing
Device fs is the fingerprint sensor fsA in fingerprint reception area FA, the signal behavior unit 22 being electrically connected with these fingerprint sensors fsA
It is above-mentioned first signal behavior unit with signal behavior unit 23；2nd to the 3rd row and the 2nd to the 4th column display pixel sp is aobvious
Show pixel spA, driving data line D namely 2-4 the root data line of these display pixels spA is data line DA.
Within the first scan period, the signal control terminal of signal behavior unit 22 and signal behavior unit 23 receives display
Enable signal, enable display scan line S12 and display scan line S13 receive display scanning signal, that is, with the 2nd to
The pixel circuit that the display pixel spA of 3rd row is connected can receive display scanning signal；Meanwhile the first data line DA energy
Default brush black voltage signal is enough received, that is, can connect with the display pixel spA of the 2nd to the 4th column pixel circuit being connected
Default brush black voltage signal is received, thus, within the first scan period, the display pixel spA in fingerprint reception area FA is all aobvious
Show 0 grayscale or substantially close to 0 grayscale, achievees the purpose that brush fingerprint reception area FA black.
Within the second scan period, the signal control terminal of signal behavior unit 22 and signal behavior unit 23 receives fingerprint
Enable signal enables finger scan line S22 and finger scan line S23 to receive finger scan signal, at this point, fingerprint receives
Area FA is black by brush, while fingerprint signal is transferred to fingerprint recognition circuit by the fingerprint Identification sensor fsA in fingerprint reception area FA
FC carries out fingerprint recognition.The light for avoiding the display pixel spA in fingerprint reception area FA from generating enters fingerprint Identification sensor
FsA and interfered caused by fingerprint recognition, be able to ascend the accuracy of fingerprint recognition.
The display panel provided using the embodiment, scan drive circuit drive finger scan and display scanning, energy simultaneously
The width for enough reducing display floater frame area is conducive to display panel and realizes narrow frame, meanwhile, pass through the unification of scan drive circuit
Control, before carrying out fingerprint recognition, the control for first passing through display scanning is black by the display pixel brush in fingerprint reception area, then
Fingerprint recognition is carried out by the control of finger scan again, to avoid the display picture when carrying out fingerprint recognition, in fingerprint reception area
Influence of the light of element to fingerprint recognition, is able to ascend the fingerprint recognition accuracy of display panel.
In one embodiment, the signal behavior unit in signal selecting circuit in addition to the first signal behavior unit is ordered
Entitled second signal selecting unit, that is, second signal selecting unit is to be electrically connected with the fingerprint sensor in non-fingerprint reception area
The signal behavior unit connect, as shown in figure 3, non-fingerprint reception areaFAFor the region except fingerprint reception area FA in the AA of viewing area,
In non-fingerprint reception areaFAIt is interior that there is display pixelspAAnd fingerprint sensorfsA, wherein with fingerprint sensorfsAElectrical connection
Signal behavior unit is second signal selecting unit, drives display pixelspAData line be non-fingerprint reception areaFAIt is corresponding
Data line, be named as the second data lineDA.In conjunction with Fig. 3 and Fig. 6, first signal behavior unit 21, the 4th signal behavior
Unit 24 to n-th signal behavior unit 2N be second signal selecting unit.
Wherein, within the first scan period, control unit CU is also used to the signal control terminal to second signal selecting unit
Output display enable signal, enables the display scan line S1 being connected with second signal selecting unit to receive display scanning
Signal, meanwhile, data drive circuit DC is controlled to the second data lineDAOutput pixel shows voltage signal, so that the second data lineDAThe display pixel of drivingspAWhen receiving pixel display voltage signal, grayscale needed for capable of showing normal picture.?
In second scan period, control unit CU exports display enable signal to the signal control terminal of second signal selecting unit, meanwhile,
Data drive circuit DC is controlled to the second data lineDAOutput pixel shows voltage signal, so that the second data lineDADriving is shown
Show pixelspAWhen receiving pixel display voltage signal, grayscale needed for capable of showing normal picture.
The display panel provided using the embodiment, within the first scan period, the signal behavior list of scan drive circuit
Member output display scanning signal, so that fingerprint reception area is brushed black, non-fingerprint reception area shows the grayscale of normal picture, the
In two scan periods, the signal behavior unit of corresponding fingerprint reception area exports finger scan signal, corresponding non-fingerprint reception area
Signal behavior unit output display scanning signal, can carry out finger scan and identification to the fingerprint image in fingerprint reception area,
Non- fingerprint reception area shows the grayscale of normal picture, reduces and brushes influence of the black and fingerprint recognition to display image in viewing area.
In the present invention, the size of fingerprint reception area can be arranged according to actual needs, and fingerprint reception area can be located at viewing area
Interior any position, for fixed fingerprint reception area, position of the fingerprint reception area in viewing area be it is fixed, for complete
For shielding fingerprint recognition, position of the fingerprint reception area in viewing area is unfixed, for example, different application program receptions refers to
The position of line is different.Fig. 8 to Figure 10 is the schematic diagram of the fingerprint reception area of the display panel of the embodiment of the present invention, is such as schemed
8 to shown in Figure 10, and in one embodiment, scan line S1 extends along first direction x, and y extends data line D in a second direction, the
One direction x and second direction y intersects, non-fingerprint reception areaFAIt is set gradually on second direction Y with fingerprint reception area FA,
In, as shown in figure 8, fingerprint reception area FA is located at the top of viewing area AA on second direction y, viewing area AA successively includes referring to
Line reception area FA and non-fingerprint reception areaFA；As shown in figure 9, fingerprint reception area FA is located at viewing area AA's on second direction y
Middle part, viewing area AA successively include the first non-fingerprint reception areaFA1, the non-fingerprint reception area of fingerprint reception area FA and secondFA2；Such as
Shown in Figure 10, on second direction y, line reception area FA is located at the bottom of viewing area AA, and viewing area AA successively includes that non-fingerprint connects
Receive areaFAWith fingerprint reception area FA.
No matter fingerprint reception area FA is located at which position of viewing area AA, in this embodiment, with continued reference to FIG. 3,
In first scan period, control unit CU exports display enable signal to the signal control terminal of each signal behavior unit, the
In the finger prints processing time in two scan periods, control unit CU exports fingerprint to the signal control terminal of each signal behavior unit
Enable signal, in the non-finger prints processing time within the second scan period, signal of the control unit CU to each signal behavior unit
Control terminal exports display enable signal, there it can be seen that the signal of each signal behavior unit controls termination in synchronization
The signal received be it is identical, thus, the signal control terminal of each signal behavior unit may connect to the same end of control unit CU
Mouthful, reduce the port setting of control unit CU.Wherein, it is calculated using the following equation the finger prints processing time：
La/L=Ta/T；
Lb/L=Tb/T；
L=La+Lb；
T=Ta+Tb,
Wherein, on second direction y, L is the length of the viewing area AA of display panel, and La is non-fingerprint reception areaFALength
The case where spending, being located at the middle part of viewing area AA for fingerprint reception area FA, La are the first non-fingerprint reception areaFA1Length La1
With the second non-fingerprint reception areaFA2The sum of length La2, Lb is the length of fingerprint reception area FA, T be scan period when
Long, Ta is the duration of non-finger prints processing time in a scan period, and Tb is finger prints processing time duration in a scan period.
The display panel provided using the embodiment carries out display scanning and when finger scan controlling the display panel, respectively
The signal control terminal of signal behavior unit can share the port of control unit, reduce the port setting of control unit, shown
When showing the output of enable signal and scan enable signal, according to positional relationship of the fingerprint reception area in viewing area, calculate to
Signal behavior unit exports the time namely finger prints processing time of scan enable signal, thus, within the first scan period, control
The sustainable output of unit processed shows enable signal,, only need to be in fingerprint after calculating the finger prints processing time within the second scan period
It handles and exports fingerprint enable signal in the time, in the other times of the second scan period, output display enable signal.
In one embodiment, with continued reference to FIG. 3, fingerprint sensor fs is optical fingerprint sensor, display panel refers to
Line light source required when identifying is provided by display pixel, in fingerprint recognition, the display pixel on the periphery fingerprint reception area FAspAIt produces
Raw light reflects when being incident to the contact surface of finger and display device, and reflection light is back to fingerprint sensor fsA, root
Fingerprint recognition is carried out according to the light that fingerprint sensor fsA is received.Specifically, display panel can be liquid crystal display panel or have
Machine light emitting display panel, for liquid crystal display panel, the light that back light generates penetrates display pixelspABe incident to finger with
It is reflected when the contact surface of display device, forms reflection light；For organic light emitting display panel, display pixelspAIt is spontaneous
The light that light generates reflects when being incident to the contact surface of finger and display device, formation reflection light.
In one embodiment, with continued reference to FIG. 3, fingerprint sensor fs is optical fingerprint sensor, display panel list
Solely setting fingerprint recognition light source, when display panel fingerprint recognition, required light source was provided by fingerprint recognition light source.Specifically, it shows
Panel can be organic light emitting display panel, fingerprint recognition light source generate light pass through display pixel spA be incident to finger with
It is reflected when the contact surface of display device, forms reflection light.
In one embodiment, with continued reference to FIG. 3, fingerprint sensor fs is optical fingerprint sensor, display panel refers to
Line light source required when identifying is provided by environment light, and in fingerprint recognition, the light that environment light generates is incident in display panel,
It is reflected again when being incident to the contact surface of finger and display device after the metal layer generation reflected refraction of display panel, by
The reflection light that contact surface is reflected back is back to fingerprint sensor fsA, is referred to according to the light that fingerprint sensor fsA is received
Line identification.
Please continue to refer to Fig. 6 or Fig. 7, in one embodiment, shift register 10 includes N number of cascade shift LD list
Member is followed successively by first order shifting deposit unit 11, second level shifting deposit unit 12, third level shifting deposit unit 13 ..., directly
To N grades of shifting deposit units, N is the natural number greater than 1, and the theory structure of shifting deposit units at different levels is identical, includes moving
Position input terminal, scanning output end and Shift outputs.By taking second level shifting deposit unit 12 as an example, including carry input SI2,
Scanning output end O2 and Shift outputs SO2.
Carry input is for receiving shift signal, and Shift outputs are for exporting shift signal.Specifically, the 1st grade of shifting
The shift signal of position deposit unit is the starting shift signal of scan drive circuit, is provided by control unit, control unit setting
There is starting shift signal output end, is electrically connected with the carry input of the 1st grade of shifting deposit unit, within each scan period,
Control unit exports the carry input of starting shift signal to the 1st grade of shifting deposit unit.From the 2nd grade of shift LD list
12 to N grades shifting deposit unit 1N of member, the shift signal of every grade of shifting deposit unit are provided by upper level shifting deposit unit,
That is, the Shift outputs of the carry input electrical connection upper level shifting deposit unit of every grade of shifting deposit unit.Still with
For second level shifting deposit unit 12, carry input SI2 is electrically connected the Shift outputs of first order shifting deposit unit 11
SO1。
It should be noted that no matter display panel is using just sweeping mode or when the anti-mode of sweeping carries out display scanning, will
The shifting deposit unit for receiving starting shift signal is named as the 1st grade of shifting deposit unit.
Scanning output end exports scanning signal, when shifting deposit unit is connected with signal behavior unit, the shift LD
The scanning output end of unit is connected with the selection signal input terminal of signal behavior unit, and scanning signal is transmitted to signal behavior
Unit is controlled scanning signal by signal behavior unit and is input to display scan line or is input to finger scan line；When displacement is posted
When memory cell is not connected to signal behavior unit, scanning output end is connected with display scan line, and scanning signal is directly inputted into
Show scan line.As shown in fig. 7, by taking second level shifting deposit unit 12 as an example, scanning output end O2 connection signal selecting unit
21 selection signal input terminal CI1 is controlled scanning signal by signal behavior unit 21 and is input to display scan line S12 or input
To finger scan line S21；By taking fourth stage shifting deposit unit 14 as an example, scanning output end O4 connection shows scan line S14, will sweep
It retouches signal and is directly inputted into display scan line S14.
With continued reference to FIG. 6, in one embodiment, the signal selecting circuit 20 of display panel includes N number of signal behavior
Unit, wherein the selection signal input terminal CIX of X signal behavior unit 2X and the scanning of X grade shifting deposit unit 1X are defeated
Outlet OX electrical connection, 1≤X≤N, that is, the selection signal input terminal CI1 of the 1st signal behavior unit 21 is posted with the 1st grade of displacement
The scanning output end O1 of memory cell 11 is electrically connected, selection signal input terminal CI2 and the 2nd grade of shifting of the 2nd signal behavior unit 22
The scanning output end O2 electrical connection of position deposit unit 12, and so on, the selection signal input terminal of n-th signal behavior unit 2N
CIN is electrically connected with the scanning output end ON of N grades of shifting deposit unit 1N.
Fingerprint sensor is arranged in the entire viewing area of the display panel provided using the embodiment, display panel, corresponds to
Shifting deposit units at different levels are provided with signal behavior unit, the shifting deposit units at different levels output in scan drive circuit
Scanning signal can carry out finger scan and display scanning, in the display panel of full frame fingerprint recognition, realize finger scan and
Display, which scans, shares scan drive circuit.
For being able to carry out the display panel of full frame fingerprint recognition, in one embodiment, the first signal behavior unit,
The signal behavior unit being electrically connected with fingerprint sensor in fingerprint reception area, to be multiple in above-mentioned N number of signal behavior unit,
It after determining fingerprint reception area, that is, can determine the fingerprint sensor in the fingerprint reception area, and then determine and fingerprint reception area
The signal behavior unit namely the first signal behavior unit of interior fingerprint sensor electrical connection are P to the Q signal behavior list
Member, wherein 1≤P < Q≤N, as shown in Figure 3 and Figure 6, the first signal behavior unit are the 2nd to the 3rd signal behavior unit.
With continued reference to FIG. 7, in one embodiment, signal selecting circuit 20 includes M signal behavior unit, M < N,
Wherein, the scanning output end of selection signal the input terminal CI1 and Y grades of shifting deposit unit 1Y of the 1st signal behavior unit 21
OY electrical connection, the selection signal input terminal CIM of m-th signal behavior unit 2M and Y+M-1 grades of shifting deposit units 1 (Y+M)
Scanning output end electricity O (Y+M) connection, 1≤Y+M-1≤N.It includes 2 signals that signal selecting circuit 20 has been shown in particular in Fig. 7
Selecting unit, M=2 and Y=2, wherein the selection signal input terminal CI1 of the 1st signal behavior unit 21 is posted with the 2nd grade of displacement
The scanning output end O2 of memory cell 12 is electrically connected, and the selection signal input terminal CI2 and 3rd level of the 2nd signal behavior unit 22 are moved
The scanning output end O3 electrical connection of position deposit unit 13.
Fingerprint sensor is arranged in the part viewing area of the display panel provided using the embodiment, display panel, corresponds to
Transposition of partial deposit unit is provided with signal behavior unit, and the transposition of partial deposit unit output in scan drive circuit is swept
Finger scan and display scanning can be carried out by retouching signal, and the scanning signal of another part shifting deposit unit output is only shown
Scanning realizes that finger scan and display scanning are shared and swept in the display panel of fingerprint recognition for realizing the fixed viewing area in part
Retouch driving circuit.
For being able to carry out the display panel of fingerprint recognition in the viewing area of part, in one embodiment, turntable driving electricity
Road includes M signal behavior unit, the first signal behavior unit, namely the letter being electrically connected with fingerprint sensor in fingerprint reception area
Number selecting unit is above-mentioned whole signal behavior unit, and as shown in Figure 3 and Figure 7, the first signal behavior unit is the 1st and the 2nd
A signal behavior unit.
Figure 11 is shifting deposit unit and signal behavior list in the scan drive circuit of the display panel of the embodiment of the present invention
The connection schematic diagram of member is shifted with X grade shifting deposit unit 1X in scan drive circuit and with the X grade as shown in figure 11
For the X signal behavior unit 2X that deposit unit 1X is connected, in one embodiment, X grade shifting deposit unit 1X
Including the first clock signal receiving end CKV1, second clock signal receiving end CKV1, carry input SIX, Shift outputs SOX
With scanning output end OX.The signal control terminal of X signal behavior unit 2X includes display enable signal control terminal CX1 and fingerprint
Enable signal control terminal CX2, control unit include display enable signal output end D_EN and fingerprint enable signal output end F_EN,
Display enable signal output end D_EN is electrically connected with display enable signal control terminal CX1, for exporting display enable signal, fingerprint
Enable signal output end F_EN is electrically connected with fingerprint enable signal control terminal CX2, for exporting fingerprint enable signal.
The display panel provided using the embodiment.Setting display enable signal control terminal and the control of fingerprint enable signal
End receives display enable signal and fingerprint enable signal respectively, so that the reception phase of display enable signal and fingerprint enable signal
It is mutually independent, it does not interfere with each other.
Please continue to refer to Figure 11, in one embodiment, signal behavior unit 2X includes first branch 2X1 and second branch
2X2, wherein the input terminal of first branch 2X1 is electrically connected with selection signal input terminal CIX, the output end of first branch 2X1 and aobvious
Show that scanning output end SOX is electrically connected, the input terminal and the first branch of display enable signal control terminal CX1 control first branch 2X1
The output end of 2X2 is turned on or off, specifically, when display enable signal control terminal CX1 receives the aobvious of control unit transmission
When showing enable signal, the conducting of the output end of the input terminal and first branch 2X1 of first branch 2X1, otherwise, first branch 2X1
Input terminal and first branch 2X1 output end disconnection.
The input terminal of second branch 2X2 is electrically connected with selection signal input terminal CIX, the output end and finger of second branch 2X2
Line scanning output end FOX electrical connection, fingerprint enable signal control terminal CX2 control the input terminal and second branch of second branch 2X2
The output end of 2X2 is turned on or off, specifically, when fingerprint enable signal control terminal CX2 receives the finger of control unit transmission
When line enable signal, the conducting of the output end of the input terminal and second branch 2X2 of second branch 2X2, otherwise, second branch 2X2
Input terminal and second branch 2X2 output end disconnection.
Wherein, several circuit components can be used respectively and constitute by first branch 2X1 and second branch 2X2, as long as meeting the
The input terminal of one branch 2X1 and the turn-on and turn-off of output end are controlled by display enable signal control terminal CX1, second branch 2X2
Input terminal and the turn-on and turn-off of output end controlled by fingerprint enable signal control terminal CX2.
Please continue to refer to Figure 11, in one embodiment, first branch 2X1 includes the first transistor M1, the first transistor
The grid of M1 is to show enable signal control terminal CX1, the extremely input terminal of first branch 2X1 of the first of the first transistor M1, the
The output end second branch 2X2 of the extremely first branch 2X1 of the second of one transistor M1 includes second transistor M2, second transistor
The grid of M2 is that fingerprint shows enable signal control terminal CX2, the extremely input of second branch 2X2 of the first of second transistor M2
End, the extremely output end of second branch 2X2 of the second of second transistor M2.
The display panel provided using the embodiment, the first branch and second branch of signal behavior unit pass through one respectively
A transistor realizes that so that the circuit structure of signal behavior unit is simple, and then the wire laying mode of display panel is simple, is conducive to narrow
The formation of frame.
Figure 12 is the control sequential figure of the display panel of the embodiment of the present invention, and in a kind of specifically embodiment, Figure 12 shows
Out in display panel shown in Fig. 3, using the control sequential figure of scan drive circuit shown in fig. 6, wherein scan and drive in Fig. 6
The shifting deposit unit of dynamic circuit and the connection schematic diagram of signal behavior unit are as shown in figure 11.It should be noted that in Figure 12
One the first scan period T1 and a second scan period T2 are only shown, optionally, after a first scan period T1,
Settable multiple second scan period T2, until completing fingerprint recognition, the first scan period T1 and the second scan period T2 are wrapped
Include finger prints processing time t.In conjunction with Fig. 3, Fig. 6, Figure 11 and Figure 12, display panel includes four display scan line S11 to S14, and four
Finger scan line S21 to S24, control unit CU setting display enable signal output end D_EN and fingerprint enable signal output end
F_EN。
In the first scan period T1, display enable signal output end D_EN persistently exports display enable signal, and scanning is driven
Each signal behavior unit of dynamic circuit receives display enable signal, in the first order shift LD list of scan drive circuit
After member 11 receives starting shift signal STV, shifting deposit units at different levels are sequentially output scanning signal to corresponding each letter
Number selecting unit, so that each signal behavior unit is sequentially output display scanning signal to display scan line S11 to S14, at this
During one, finger scan line S21 to S24 is not received by finger scan signal.Wherein, in the finger of the first scan period T1
Line is handled in time t, and control unit CU controls data drive circuit DC and exports default black voltage signal by data line DA, is realized
The brush of fingerprint reception area FA is black.
Fingerprint reception area FA is located at the middle part of viewing area AA, and correspondingly, the second scan period T2 includes at the first non-fingerprint
Manage time t1, the non-finger prints processing time t2 of finger prints processing time t and second.
In the first non-finger prints processing time t1, display enable signal output end D_EN persistently exports display enable signal,
Each signal behavior unit of scan drive circuit receives display enable signal, and each signal behavior unit is in can be with
The state of output display scanning signal.Specifically, starting is received in the first order shifting deposit unit 11 of scan drive circuit
After shift signal STV is shifted, output scanning signal is to first signal behavior unit 21, first signal behavior at this time
The output display of unit 21 scanning signal extremely display scan line S11, and the first non-finger prints processing time t1 terminates, and reaches at fingerprint
Manage time t.
In finger prints processing time t, fingerprint enable signal output end F_EN persistently exports fingerprint enable signal, turntable driving
Each signal behavior unit of circuit receives fingerprint enable signal, is in the state that can export finger scan signal,
Meanwhile first order shifting deposit unit 11 exports shift signal to second level shifting deposit unit 12, second level shift LD list
Member 12 receives the shift signal of the output of first order shifting deposit unit 11, is shifted, and exports scanning signal extremely after shifting
Second signal behavior unit 22, second signal behavior unit 22 exports finger scan signal to finger scan line S22 at this time；
Then second level shifting deposit unit 12 exports shift signal to third level shifting deposit unit 13, third level shifting deposit unit
13 receive the shift signal of the output of second level shifting deposit unit 12, are shifted, and output scanning signal is to the after shifting
Three signal behavior units 23, third signal behavior unit 23 exports finger scan signal to finger scan line S23 at this time, and
And finger prints processing time t terminates, and reaches the second non-finger prints processing time t2.
In the second non-finger prints processing time t2, display enable signal output end D_EN persistently exports display enable signal,
Each signal behavior unit of scan drive circuit receives display enable signal, and each signal behavior unit is in can be with
The state of output display scanning signal.Specifically, third is received in the fourth stage shifting deposit unit 14 of scan drive circuit
The shift signal that grade shifting deposit unit 13 exports, is shifted, and scanning signal is exported after shifting to the 4th signal behavior
Unit 24, the 4th output of signal behavior unit 24 display scanning signal to display scan line S14, completed for the second scanning week at this time
Phase.
Figure 13 is a kind of circuit diagram of the shifting deposit unit of display panel of the embodiment of the present invention, in a kind of implementation
In example, the physical circuit schematic diagram of the shifting deposit unit of display panel is as shown in figure 13, and shifting deposit unit uses CMOS type
Shift register is realized, in this embodiment, is still illustrated by taking xth grade shifting deposit unit 1X as an example, the displacement of other grades
Deposit unit is similar, and details are not described herein again.Xth grade shifting deposit unit 1X includes the first clock signal input terminal CKV1, second
Clock signal input terminal CKV2, carry input SIX, Shift outputs SOX and scanning output end OX, wherein the first clock letter
The clock signal that number input terminal CKV1 and second clock signal input part CKV2 reception control unit provide, carry input SIX,
Shift outputs SOX, scanning output end OX are referring to above-mentioned associated description, and details are not described herein again.Xth grade shifting deposit unit 1X packet
Include latch LA, NAND gate NA and buffer BU.Specifically, the clock signal input terminal of latch LA connects the first clock signal
The input terminal of input terminal CKV1, latch LA connect scan input end SIX, and the output end of latch LA connects Shift outputs
SOX。
Wherein, latch LA, NAND gate NA and buffer BU concrete implementation mode can be using any in the prior art
Implementation, details are not described herein again.
Figure 14 is the circuit diagram of the shifting deposit unit of another display panel of the embodiment of the present invention, in a kind of reality
It applies in example, the physical circuit schematic diagram of the shifting deposit unit of display panel is as shown in figure 14, and shifting deposit unit uses NMOS
Type shift register is realized, in this embodiment, is still illustrated by taking xth grade shifting deposit unit 1X as an example, other grades are moved
Position deposit unit is similar, and details are not described herein again.Xth grade shifting deposit unit 1X includes the first clock signal input terminal CKV1, the
Two clock signal input terminal CKV2, carry input SIX, Shift outputs SOX and scanning output end OX, wherein the first clock
The clock signal that signal input part CKV1 and second clock signal input part CKV2 reception control unit provide, carry input
SIX, Shift outputs SOX, scanning output end OX are referring to above-mentioned associated description, and details are not described herein again.
Xth grade shifting deposit unit 1X further includes output unit OU, drop-down unit DU and pull-up unit UU.Specifically, defeated
The output end of unit OU is connected with Shift outputs SOX out, and output unit OU includes first node N1 and second node N2.Under
Draw cells D U and scan input end SIX, the first clock signal input terminal CKV1, second clock signal input part CKV2 and the second section
Point N2 is connected, for according to scan input end SIX, the first clock signal input terminal CKV1 and second clock signal input part
The current potential for the signal control second node N2 that CKV2 is received.Pull-up unit UU and the first clock signal input terminal CKV1, first
Node N1 is connected with second node N2, the signal and second node for being received according to the first clock signal input terminal CKV1
The current potential of the control of Electric potentials first node N1 of N2.
Wherein, the implementation of output unit OU, drop-down unit DU and pull-up unit UU can use as shown in figure 14
Implementation, drop-down unit DU include five thin film transistor (TFT)s, and pull-up unit UU includes two thin film transistor (TFT)s, output unit OU
Including two thin film transistor (TFT)s and two capacitors, alternatively, other implementations in the prior art can also be used, it is no longer superfluous herein
It states.
The above are the embodiments of organic light emitting display panel provided in an embodiment of the present invention, and it is aobvious that the present invention also provides one kind
Showing device, Figure 15 are the structural schematic diagram of display device described in the embodiment of the present invention, and as shown in figure 15, which includes
Shell and the display panel being wrapped within shell, the display panel are the display panel that any one of the above embodiment provides,
With corresponding technical characteristic and technical effect, details are not described herein.
Through the foregoing embodiment it is found that display panel and display device of the invention, have reached following beneficial effect：It sweeps
It retouches driving circuit while driving finger scan and display scanning, the width in display floater frame area can be reduced, be conducive to display surface
Plate realizes narrow frame, meanwhile, it first passes through display before carrying out fingerprint recognition by being uniformly controlled for scan drive circuit and sweeps
The control retouched is black by the display pixel brush in fingerprint reception area, then carries out fingerprint recognition by the control of finger scan again, with
Influence of the light of the display pixel when carrying out fingerprint recognition, in fingerprint reception area to fingerprint recognition is avoided, is able to ascend aobvious
Show the fingerprint recognition accuracy of panel.
Although some specific embodiments of the invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to being illustrated, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above embodiments.This hair
Bright range is defined by the following claims.
Claims (14)
1. a kind of display panel, which is characterized in that including：
Scan line and data line；
Fingerprint recognition array, including several fingerprint sensors；
Scan drive circuit, including shift register and signal selecting circuit, wherein the shift register includes multiple displacements
Deposit unit, each shifting deposit unit are sequentially output scanning signal, the signal selecting circuit within a scan period
Including multiple signal behavior units, the signal behavior unit includes selection signal input terminal, signal control terminal, shows that scanning is defeated
The selection signal input terminal of outlet and finger scan output end, each signal behavior unit receives a displacement
The scanning signal of deposit unit output, the display scanning output end are electrically connected with the scan line, the finger scan output
End is electrically connected with the fingerprint sensor, when the signal control terminal receives display enable signal, the display scanning output
End is connected with the selection signal input terminal, and when the signal control terminal receives fingerprint enable signal, the finger scan is defeated
Outlet is connected with the selection signal input terminal；
Data drive circuit is electrically connected with the data line；
Control unit is electrically connected with the signal control terminal of the scan drive circuit and the data drive circuit,
For at least believing to the signal control terminal of the first signal behavior unit output display is enabled within the first scan period
Number, and control the data drive circuit and at least export default brush black voltage signal to the first data line, in the second scan period
The fingerprint enable signal at least inside is exported to the signal control terminal of the first signal behavior unit, wherein described the
Scan cycle is the previous scan period adjacent with second scan period, and the first signal behavior unit is
The signal behavior unit being electrically connected with the fingerprint sensor in fingerprint reception area, first data line are that the fingerprint connects
Receive the corresponding data line in area.
2. display panel according to claim 1, which is characterized in that
Described control unit includes starting shift signal output end, for exporting a starting displacement in each scan period
Signal；
The shift register includes N number of cascade shifting deposit unit, and the shifting deposit unit includes carry input, sweeps
Retouch output end and Shift outputs, wherein the carry input of the 1st grade of shifting deposit unit is electrically connected the starting
Shift signal output end, from the 2nd grade of shifting deposit unit to the N grades of shifting deposit units, every grade of displacement is posted
The Shift outputs of shifting deposit unit described in the carry input electrical connection upper level of memory cell, N is greater than 1
Natural number.
3. display panel according to claim 2, which is characterized in that
The signal selecting circuit includes N number of signal behavior unit, wherein the X signal behavior unit it is described
Selection signal input terminal is electrically connected with the scanning output end of X grade shifting deposit unit, 1≤X≤N.
4. display panel according to claim 3, which is characterized in that
The first signal behavior unit is respectively P to the Q signal behavior units, wherein 1≤P < Q≤N.
5. display panel according to claim 2, which is characterized in that
The signal selecting circuit includes M signal behavior unit, wherein the selection of the 1st signal behavior unit
Signal input part is electrically connected with the scanning output end of the Y grades of shifting deposit units, signal behavior unit described in m-th
The selection signal input terminal be electrically connected with the scanning output end of the Y+M-1 grades of shifting deposit units, M < N, 1
≤Y+M-1≤N。
6. display panel according to claim 5, which is characterized in that
The first signal behavior unit includes the M signal behavior unit.
7. display panel according to claim 1, which is characterized in that
The signal control terminal includes display enable signal control terminal and fingerprint enable signal control terminal；
Described control unit includes that display enable signal output end and fingerprint enable signal output end, the display enable signal are defeated
Outlet is electrically connected with the display enable signal control terminal, for exporting the display enable signal, the fingerprint enable signal
Output end is electrically connected with the fingerprint enable signal control terminal, for exporting the fingerprint enable signal.
8. display panel according to claim 7, which is characterized in that
The signal behavior unit includes the first branch and second branch；
The input terminal of the first branch is electrically connected with the selection signal input terminal, the output end of the first branch with it is described
Show scanning output end electrical connection, the display enable signal control terminal controls the input terminal and described first of the first branch
The output end of branch is turned on or off；
The input terminal of the second branch is electrically connected with the selection signal input terminal, the output end of the second branch with it is described
The electrical connection of finger scan output end, the fingerprint enable signal control terminal control the input terminal and described second of the second branch
The output end of branch is turned on or off.
9. display panel according to claim 8, which is characterized in that
The first branch includes the first transistor, and the grid of the first transistor is the display enable signal control terminal,
The input terminal of the extremely described first branch of the first of the first transistor, the second of the first transistor extremely described first
The output end of branch；
The second branch includes second transistor, and the grid of the second transistor is that the fingerprint shows enable signal control
End, the input terminal of the extremely described second branch of the first of the second transistor, the second of the second transistor are extremely described
The output end of second branch.
10. display panel according to claim 1, which is characterized in that
Described control unit was also used within first scan period, to the signal control terminal of second signal selecting unit
The display enable signal is exported, and controls the data drive circuit and shows voltage signal to the second data line output pixel,
To the enabled letter of the signal control terminal of the second signal selecting unit output display within second scan period
Number, and control the data drive circuit and export the pixel to second data line and show voltage signal, wherein described the
Binary signal selecting unit is the signal behavior unit being electrically connected with the fingerprint sensor in non-fingerprint reception area, described second
Data line is the corresponding data line of the non-fingerprint reception area.
11. display panel according to claim 10, which is characterized in that
The scan line extends in a first direction, and the data line extends in a second direction, the first direction and described second
Direction intersects, and the non-fingerprint reception area and the fingerprint reception area are set gradually in this second direction；
The finger prints processing time of the described control unit within second scan period is to each signal behavior unit
The signal control terminal exports the fingerprint enable signal,
Wherein, it is calculated using the following equation the finger prints processing time：
La/L=Ta/T；
Lb/L=Tb/T；
L=La+Lb；
T=Ta+Tb,
Wherein, in this second direction, L is the length of the viewing area of the display panel, and La is the non-fingerprint reception area
Length, Lb is the length of the fingerprint reception area, and T is the duration of a scan period, and Ta is that the scanning is all
The duration of non-finger prints processing time in phase, Tb are the finger prints processing time duration in a scan period.
12. display panel according to claim 1, which is characterized in that
The fingerprint sensor is optical fingerprint sensor；
The display panel includes display pixel, and when display panel fingerprint recognition, required light source was mentioned by the display pixel
For.
13. display panel according to claim 1, which is characterized in that
The fingerprint sensor is optical fingerprint sensor；
The display panel includes display pixel and fingerprint recognition light source, when display panel fingerprint recognition required light source by
The fingerprint recognition light source provides.
14. a kind of display device, which is characterized in that including display panel described in any one of claims 1 to 13.
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| CN201810631275.3A CN108875634B (en) | 2018-06-19 | 2018-06-19 | Display panel and display device |
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Cited By (5)
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| US11112903B2 (en) | 2020-01-06 | 2021-09-07 | Au Optronics Corporation | Display device |
| CN113362754A (en) * | 2020-12-07 | 2021-09-07 | 友达光电股份有限公司 | Shift register circuit |
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