CN106778485A - Fingerprint recognition module, device, driving method and display device - Google Patents
Fingerprint recognition module, device, driving method and display device Download PDFInfo
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- CN106778485A CN106778485A CN201611030785.2A CN201611030785A CN106778485A CN 106778485 A CN106778485 A CN 106778485A CN 201611030785 A CN201611030785 A CN 201611030785A CN 106778485 A CN106778485 A CN 106778485A
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- fingerprint recognition
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
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- 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
- G06V40/1382—Detecting the live character of the finger, i.e. distinguishing from a fake or cadaver finger
- G06V40/1394—Detecting the live character of the finger, i.e. distinguishing from a fake or cadaver finger using acquisition arrangements
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- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Image Input (AREA)
Abstract
The present invention provides a kind of fingerprint recognition module, device, driving method and display device.Fingerprint recognition module described in the fingerprint recognition module includes：It is arranged on the infrared light supply for touching the opposite side in side with touch base plate；The photosensitive unit connected one to one with the drain electrode of fingerprint recognition transistor, it is arranged on touch base plate, when finger touches touch base plate, photosensitive unit can receive the IR that finger is reflected back and produce the different current signal of intensity according to the intensity of the IR for receiving.The present invention can solve the problems, such as that biological living detection can not be carried out while fingerprint recognition in the prior art.
Description
Technical field
The present invention relates to fingerprint identification technology field, more particularly to a kind of fingerprint recognition module, device, driving method and aobvious
Show equipment.
Background technology
Existing self-tolerant fingerprint recognition touch-screen, including fingerprint recognition scan line arranged in a crossed manner and fingerprint recognition sensing
Line, fingerprint recognition scan line and the fingerprint recognition line of induction respectively with control fingerprint recognition thin film transistor (TFT) grid and source/drain
Extremely it is connected.During fingerprint recognition, scanning signal is input into grid successively, and the signal couples generation sensing electric current, quilt with finger skin
The fingerprint recognition line of induction is received, and because finger skin has valley and a ridge, valley and a ridge electric capacity is different, can produce different sensing electricity
The feedback signal of data wire is collected in stream, test side, and the difference according to sensing electric current judges valley and a ridge, is analyzed by computing unit
Fingerprint road in one's hands, compares with the finger print information being stored in, and carries out finger print identifying.
Fingerprint recognition is carried out using capacitive way, silica type vacation fingerprint recognition can be prevented, but for conducting film
False fingerprint recognition security it is very low.
The content of the invention
It is a primary object of the present invention to provide a kind of fingerprint recognition module, device, driving method and display device, solve
The problem of biological living detection can not be carried out while fingerprint recognition in the prior art.
In order to achieve the above object, the invention provides a kind of fingerprint recognition module, including intersect on touch base plate
The multirow fingerprint recognition scan line and the multiple row fingerprint recognition line of induction of setting, and be arranged on the fingerprint recognition scan line and refer to
The fingerprint recognition transistor of the infall of the line identification line of induction, grid and the fingerprint recognition of the fingerprint recognition transistor are swept
Line connection is retouched, the source electrode of the fingerprint recognition transistor is connected with the fingerprint recognition line of induction, and the fingerprint recognition module is also
Including：
It is arranged on the infrared light supply for touching the opposite side in side with the touch base plate；
The photosensitive unit connected one to one with the drain electrode of the fingerprint recognition transistor, is arranged at the touch base plate
On, when finger touches the touch base plate, the photosensitive unit can receive the IR and root that finger is reflected back
The different current signal of intensity is produced according to the intensity of the IR for receiving.
During implementation, the photosensitive unit includes：Light anode, photocathode, between the light anode and the photocathode
Opto-electronic conversion semiconductor layer and light shield layer；The light anode is connected with the drain electrode of the fingerprint recognition transistor；
The opto-electronic conversion semiconductor layer is set corresponding to non-light-emitting area；
The light anode is transparency conductive electrode；
The light shield layer is arranged at the one side that the photocathode is not provided with opto-electronic conversion semiconductor layer, the opto-electronic conversion
Orthographic projection of the semiconductor layer on the touch base plate fall completely within orthographic projection of the light shield layer on the touch base plate it
In.
During implementation, the light anode of the photosensitive unit is multiplexed with fingerprint recognition electrode；The light anode is electrically conducting transparent electricity
Pole.
During implementation, fingerprint recognition module of the present invention also includes fingerprint recognition public electrode；
The fingerprint recognition public electrode is multiplexed with the time of all photosensitive units that the fingerprint recognition transistor includes
Pole；
The fingerprint recognition public electrode is transparency conductive electrode.
During implementation, the fingerprint recognition public electrode and the fingerprint recognition electrode are all made up of transparent conductive material
Film-form electrode.
During implementation, the infrared light supply is arranged at the luminous zone of display base plate.
During implementation, spacing between the adjacent fingerprint identification unit of each two more than or equal to 50 microns to be less than
Or equal to 70 microns.
Present invention also offers a kind of fingerprint identification device, including fingerprint recognition scanning circuit and fingerprint recognition induced electricity
Road, also including above-mentioned fingerprint recognition module, wherein,
The fingerprint recognition scanning circuit is connected with multirow fingerprint recognition scan line respectively, for the In vivo detection stage to
All of fingerprint recognition scan line all exports opening control signal, is known with all fingerprints for controlling the fingerprint recognition module to include
Other transistor is all opened；
The fingerprint recognition sensor circuit is connected with the multiple row fingerprint recognition line of induction respectively, in the inspection of In vivo detection stage
The photo-signal that all of fingerprint recognition line of induction sensing is obtained is surveyed, and is with pre- standing wave when the photo-signal is detected
Judge there is biological living touch event during the current signal of dynamic model formula.
During implementation, the fingerprint recognition scanning circuit is additionally operable in the fingerprint recognition stage successively to the multirow fingerprint recognition
Scan line exports opening control signal, to control the fingerprint recognition transistor timesharing positioned at different rows to open；
The fingerprint recognition sensor circuit is additionally operable to be exported according to the fingerprint recognition line of induction in the fingerprint recognition stage
Fingerprint recognition induced signal detects finger print information.
Present invention also offers a kind of driving method of fingerprint identification device, above-mentioned fingerprint identification device, institute are applied to
Stating driving method includes：
In vivo detection step：In the In vivo detection stage, fingerprint recognition scanning circuit to all of fingerprint recognition scan line all
Output opening control signal, is all opened, fingerprint recognition sense with all fingerprint recognition transistors for controlling fingerprint recognition module to include
The photo-signal for answering all of fingerprint recognition line of induction sensing of electric circuit inspection to obtain, and be tool when the photo-signal is detected
With the presence of predetermined fluctuation pattern current signal when judge biological living touch event.
During implementation, driving method of the present invention also includes after the In vivo detection step：
Fingerprinting step：In the fingerprint recognition stage, the fingerprint recognition scanning circuit is opened to multirow output successively
Open control signal, with control positioned at different rows the timesharing of fingerprint recognition transistor open, the fingerprint recognition sensor circuit according to
The fingerprint recognition induced signal detection finger print information of the fingerprint recognition line of induction output.
Present invention also offers a kind of display device, including above-mentioned fingerprint identification device.
Compared with prior art, fingerprint recognition module of the present invention, device, driving method and display device, existing
Also include infrared light supply and photosensitive unit on the basis of some fingerprint identification units, finger skin is irradiated to by infrared light supply, pass through
Photoelectric conversion device is irradiated to by skin reflex), because human finger blood is with the carrying out of respiratory rate, hemoglobin also can
More or less rule is presented, it is so infrared also can be by more or less absorption, the energy of the infrared light for reflecting also can be with
The more or less Changing Pattern of appearance, the photoelectric current produced by such photosensitive unit will produce data wave with respiratory rate
Dynamic, the fingerprint recognition line of induction will receive corresponding one data-signal for having fluctuation, successively come to judge finger be live body；This
Fingerprint recognition module described in inventive embodiments proposes to add an opto-electronic conversion for infrared detection on self-capacitance sensing unit
Unit, can carry out biological living detection before fingerprint recognition.
Brief description of the drawings
Fig. 1 is the structure chart of the fingerprint recognition module described in the embodiment of the present invention；
Fig. 2 is the structure chart of the fingerprint recognition module described in another embodiment of the present invention；
Fig. 3 is the structure chart of an embodiment of the photosensitive unit that fingerprint recognition module of the present invention includes；
Fig. 4 be the timesharing in a frame time of fingerprint recognition module described in the embodiment of the present invention carry out biological living detection and
The timing diagram of fingerprint recognition；
Fig. 5 is that the fingerprint recognition module described in the embodiment of the present invention carries out biological living detection and fingerprint in different frame timesharing
The timing diagram of identification.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fingerprint recognition module described in the embodiment of the present invention, including multirow fingerprint arranged in a crossed manner on touch base plate is known
Other scan line and the multiple row fingerprint recognition line of induction, and the friendship for being arranged on the fingerprint recognition scan line and the fingerprint recognition line of induction
Fingerprint recognition transistor at fork, the grid of the fingerprint recognition transistor is connected with the fingerprint recognition scan line, the finger
The source electrode of line identification transistor is connected with the fingerprint recognition line of induction, as shown in figure 1, the fingerprint recognition module also includes：
It is arranged on the infrared light supply 11 for touching the opposite side in side with touch base plate 10；
The photosensitive unit 12 connected one to one with the drain electrode of the fingerprint recognition transistor (not shown in figure 1), is set
In on the touch base plate 10, when finger touches the touch base plate, it is anti-that the photosensitive unit 12 can receive finger
The IR that is emitted back towards simultaneously produces the different current signal of intensity according to the intensity of the IR for receiving.
An infrared light supply 11 and a photosensitive unit 12 are only delineated in Fig. 1 as signal, in practical operation,
The fingerprint recognition module includes photosensitive-cell array, and the photosensitive-cell array includes multiple photosensitive units 12, and infrared light supply
11 number is also multiple.
Fingerprint recognition module described in the embodiment of the present invention also includes infrared on the basis of existing fingerprint identification unit
Light source and photosensitive unit, finger skin is irradiated to by infrared light supply, and photoelectric conversion device is irradiated to via skin reflex), due to
With the carrying out of respiratory rate, hemoglobin can also be presented more or less rule to human finger blood, it is so infrared also can be by
More or less Changing Pattern also can therewith occur in more or less absorption, the energy of the infrared light for reflecting, so photosensitive
Photoelectric current produced by unit will produce data fluctuations with respiratory rate, and the fingerprint recognition line of induction will be received accordingly
One data-signal for having fluctuation, successively come to judge finger be live body；Fingerprint recognition module described in the embodiment of the present invention is proposed
A photoelectric conversion unit for infrared detection is added on self-capacitance sensing unit, biological work can be carried out before fingerprint recognition
Physical examination is surveyed.
Preferably, the infrared light supply is arranged at the luminous zone of display base plate, because infrared light is that human eye is invisible, therefore
Do not interfere with luminous.
As shown in Fig. 2 the fingerprint recognition module described in the embodiment of the present invention includes be arranged on touch base plate 10 first
Photosensitive unit 121, the second photosensitive unit 122 and the 3rd photosensitive unit 123；
Fingerprint recognition module described in the embodiment of the present invention also includes that be arranged at the luminous zone of display base plate 20 first is red
Outer light source 111, the second infrared light supply 112, the 3rd infrared light supply 113 and the 4th infrared light supply 114；
First infrared light supply 111 is arranged on the first red sub-pixel R1 of the display base plate 21, and described second
Infrared light supply 112 is arranged on the first green sub-pixels G1 of the display base plate 21, and the 3rd infrared light supply 113 is arranged at
On first blue subpixels B1 of the display base plate 21, the 4th infrared light supply 114 is arranged at the display base plate 21
On second red sub-pixel R2；
First photosensitive unit 121, the second photosensitive unit 122 and the 3rd photosensitive unit 123 set corresponding to non-light-emitting area
Put (not being transparent due to photosensitive unit, it is therefore desirable to set corresponding to non-light-emitting area)；
The light path of the infrared light that the first infrared light supply 111 sends is as shown in Figure 2.
In practical operation, photosensitive unit battle array is provided with the one side relative with the display base plate 20 of touch base plate 10
Row, the paddy ridge size of the fingerprint according to people, the spacing between photosensitive unit is preferably greater than or equal to 50 microns and is less than or waits
In 70 microns.
Launching position of each photosensitive unit on display base plate 20 falls in the non-luminescent of display screen between light emitting pixel
Area.
In practical operation, the first photosensitive unit 121, the second photosensitive unit 122 and the 3rd photosensitive unit 123 respectively with phase
The drain electrode connection of the fingerprint recognition transistor answered.
In the specific implementation, the touch base plate 10 can be cover-plate glass.
Specifically, the photosensitive unit can include：Light anode, photocathode, positioned at the light anode and the photocathode
Between opto-electronic conversion semiconductor layer and light shield layer；The light anode is connected with the drain electrode of the fingerprint recognition transistor；
The opto-electronic conversion semiconductor layer is set corresponding to non-light-emitting area；
The light anode is transparency conductive electrode；
The light shield layer is arranged at the one side that the photocathode is not provided with opto-electronic conversion semiconductor layer, the opto-electronic conversion
Orthographic projection of the semiconductor layer on the touch base plate fall completely within orthographic projection of the light shield layer on the touch base plate it
In.
Preferably, the photosensitive unit includes light shield layer, and light shield layer can prevent opto-electronic conversion semiconductor layer from directly receiving
Infrared ray from infrared light supply, is entirely to be reflected by finger, touch base plate with cause opto-electronic conversion semiconductor layer to receive
Infrared light, lifts biological living accuracy of identification；And because opto-electronic conversion semiconductor layer is not transparent, therefore in order to not influence to show
Show, the opto-electronic conversion semiconductor layer needs to be set corresponding to non-light-emitting area.
Preferably, the light anode of the photosensitive unit is multiplexed with fingerprint recognition electrode；The light anode is electrically conducting transparent electricity
Pole.
Specifically, fingerprint recognition module of the present invention also includes fingerprint recognition public electrode；
The fingerprint recognition public electrode is multiplexed with the time of all photosensitive units that the fingerprint recognition transistor includes
Pole；
The fingerprint recognition public electrode is transparency conductive electrode.
In practical operation, can be multiplexed with that the fingerprint recognition transistor includes by fingerprint recognition public electrode is all
The photocathode of photosensitive unit, because the fingerprint recognition module described in the embodiment of the present invention is all control when biological living is detected
Fingerprint recognition scan line simultaneously open, all of fingerprint recognition line of induction simultaneously receive photosensitive unit feedback signal, namely
Now fingerprint identification unit array forms an entirety, as a big full frame electrooptical device, which increases light and connects
Area is received, therefore making can be simplified photosensitive by the photocathode of all of photosensitive unit of the public electrode of a flood or so
The technique of unit, and fingerprint recognition public electrode need to be set to it is transparent, not influence display effect.
As shown in figure 3, the photosensitive unit includes：The fingerprint recognition electrode 31, fingerprint recognition for being multiplexed with light anode is public
Electrode 32, opto-electronic conversion semiconductor layer 33 and screening between the fingerprint recognition electrode 31 and fingerprint recognition public electrode 32
Photosphere 34；The fingerprint recognition electrode 31 is connected with the drain electrode S of the fingerprint recognition transistor；
The opto-electronic conversion semiconductor layer 33 is set corresponding to non-light-emitting area；
The fingerprint recognition electrode 31 is transparency conductive electrode；
The light shield layer 34 is arranged at the fingerprint recognition public electrode 32 and is not provided with opto-electronic conversion semiconductor layer 33
Simultaneously, orthographic projection of the opto-electronic conversion semiconductor layer 33 on the touch base plate 10 falls completely within the light shield layer 34 in institute
State among the orthographic projection on touch base plate 10.
In the specific implementation, the fingerprint recognition public electrode 32 is preferably by electrically conducting transparent materials such as ITO (tin indium oxide)
The film-form electrode that material is made.
In practical operation, in the embodiment shown in fig. 3, the photosensitive unit is photodiode, and the fingerprint is known
Other electrode 31 is multiplexed with the light anode of photodiode, and the fingerprint recognition public electrode 32 is the photocathode of photodiode.
In the embodiment shown in fig. 3, the light shield layer 34 is preferably and is made up of Summoning.
In the specific implementation, the fingerprint recognition public electrode 32 is whole piece electrode, namely fingerprint recognition module includes
All of fingerprint recognition public electrode 32 be all one, in the In vivo detection stage, all of fingerprint recognition transistor is all beaten
Open, all of photosensitive unit is integrated into an electrooptical device.
Preferably, the photosensitive unit includes light shield layer, and light shield layer can prevent opto-electronic conversion semiconductor layer from directly receiving
Infrared ray from infrared light supply, is entirely to be reflected by finger, touch base plate with cause opto-electronic conversion semiconductor layer to receive
Infrared light, lifts biological living accuracy of identification；And because opto-electronic conversion semiconductor layer is not transparent, therefore in order to not influence to show
Show, the opto-electronic conversion semiconductor layer needs to be set corresponding to non-light-emitting area.
Can In vivo detection the section structure of sensing unit that includes of fingerprint recognition module as shown in figure 3, referring in self-tolerant
(the self-tolerant fingerprint sensing unit includes fingerprint recognition transistor and the drain electrode with the fingerprint recognition transistor to line sensing unit
The fingerprint recognition electrode 31 of D connections, the fingerprint recognition electrode 31 is multiplexed with light anode) on add a photosensitive unit, common group
Into one can In vivo detection fingerprint sensing unit.The light anode is preferably the film-form electrode of electrically conducting transparent, and the light anode is led to
Via 40 is connected with the drain D of fingerprint recognition transistor.Light anode lower section is followed successively by opto-electronic conversion semiconductor layer 33 and refers to
Line recognizes public electrode 32, and the identification public electrode 32 is the photocathode of photodiode.
In practical operation, the opto-electronic conversion semiconductor layer 33 can be photoelectricity PIN layers.
As shown in figure 4, in In vivo detection stage T1, all of fingerprint recognition scan line is all input into square-wave signal simultaneously
(in practical operation can also all of fingerprint recognition scan line all access high level simultaneously), now all of fingerprint recognition
Transistor is fully open, while the fingerprint recognition line of induction receives signal simultaneously, that is to say, that now photosensitive-cell array forms one
Individual entirety, is a big full frame electrooptical device, so greatly increased light receiving area, it is to avoid individual devices
The less problem of photoelectric current caused by receiving area is smaller, the Infrared irradiation that the infrared light supply in pixel region is launched to finger
(infrared light light path is irradiated to photovoltaic converter as shown in Fig. 2 be irradiated to finger skin by infrared light supply via skin reflex
Part), because human finger blood is with the carrying out of respiratory rate, hemoglobin can also be presented more or less rule, so red
Outward also can be by more or less absorption, more or less Changing Pattern also can therewith occur in the energy of the infrared light for reflecting,
Photoelectric current so produced by electrooptical device will produce data fluctuations with respiratory rate, and the fingerprint recognition line of induction will
Corresponding one data-signal for having fluctuation is received, according to this come to judge finger be live body.Complete after biological living judgement, open
Dynamic self-tolerant fingerprint recognition, under fingerprint recognition pattern, fingerprint recognition scan line input scanning signal, the fingerprint recognition line of induction according to
Secondary reception signal, carries out fingerprint recognition.
Can the fingerprint recognition module of In vivo detection can be driven using timesharing, the time of a frame is divided into biological living detection
Time period and fingerprint recognition time period, driver' s timing, choosing 5ms therein was as shown in figure 4, the time of each frame is 16.7ms
In vivo detection stage T1, in In vivo detection stage T1, it is same to fingerprint recognition scan line that fingerprint recognition scans IC (integrated circuit)
When be input into square-wave signal, all of fingerprint recognition transistor is synchronously opened, and data receiver receives signal simultaneously, now can entirely
The photosensitive unit of screen is considered as an electrooptical device, biological living is judged by the signal of data receiver, below
In 11.7ms (i.e. fingerprint recognition stage T2), fingerprint recognition scanning IC sequentially inputs fingerprint recognition to multirow fingerprint recognition scan line
Scanning signal, data output end receives signal successively, carries out fingerprint recognition.The time-sharing option (TSO) can also process energy according to IC chip
Appropriate two durations in stage of adjustment of power, are not specifically limited herein.
Vivo identification pattern and fingerprint recognition pattern can also be all used for using the type of drive of framing, the time of a frame
Biological living detection is done, the time of another frame is all for doing fingerprint recognition, as shown in figure 5, in the first frame time F1, IC is to finger
Line identification scan line is input into square-wave signal simultaneously, and all of fingerprint recognition transistor is synchronously opened, and the fingerprint recognition line of induction is simultaneously
Signal is received, now full frame photosensitive unit can be considered as an electrooptical device, judged by the signal of data receiver
Biological living, fingerprint recognition scanning signal, fingerprint recognition sense are sequentially input in the second frame time F2, IC to fingerprint recognition scan line
Answer line to receive signal successively, carry out self-tolerant fingerprint recognition.The time-sharing option (TSO) can also be appropriate according to IC chip disposal ability
The ratio of the frame that adjustment live body pattern and fingerprint pattern drive, is not specifically limited herein.
Fingerprint identification device described in the embodiment of the present invention, including fingerprint recognition scanning circuit and fingerprint recognition induced electricity
Road, also including above-mentioned fingerprint recognition module, wherein,
The fingerprint recognition scanning circuit is connected with multirow fingerprint recognition scan line respectively, for the In vivo detection stage to
All of fingerprint recognition scan line all exports opening control signal, is known with all fingerprints for controlling the fingerprint recognition module to include
Other transistor is all opened；
The fingerprint recognition sensor circuit is connected with the multiple row fingerprint recognition line of induction respectively, in the inspection of In vivo detection stage
The photo-signal that all of fingerprint recognition line of induction sensing is obtained is surveyed, and is with pre- standing wave when the photo-signal is detected
Judge there is biological living touch event during the current signal of dynamic model formula.
Fingerprint identification device described in the embodiment of the present invention is defined and controls all of fingerprint to know when In vivo detection is carried out
Other scan line is opened simultaneously, and all of fingerprint recognition line of induction receives the signal of photosensitive unit feedback, namely now fingerprint simultaneously
Recognition unit array forms an entirety, as a big full frame electrooptical device, which increases light receiving area.
Specifically, the fingerprint recognition scanning circuit is additionally operable in the fingerprint recognition stage successively to the multirow fingerprint recognition
Scan line exports opening control signal, to control the fingerprint recognition transistor timesharing positioned at different rows to open；
The fingerprint recognition sensor circuit is additionally operable to be exported according to the fingerprint recognition line of induction in the fingerprint recognition stage
Fingerprint recognition induced signal detects finger print information.
The driving method of the fingerprint identification device described in the embodiment of the present invention, is applied to above-mentioned fingerprint identification device, institute
Stating driving method includes：
In vivo detection step：In the In vivo detection stage, fingerprint recognition scanning circuit to all of fingerprint recognition scan line all
Output opening control signal, is all opened, fingerprint recognition sense with all fingerprint recognition transistors for controlling fingerprint recognition module to include
The photo-signal for answering all of fingerprint recognition line of induction sensing of electric circuit inspection to obtain, and be tool when the photo-signal is detected
With the presence of predetermined fluctuation pattern current signal when judge biological living touch event.
Specifically, also including after the In vivo detection step：
Fingerprinting step：In the fingerprint recognition stage, the fingerprint recognition scanning circuit is opened to multirow output successively
Open control signal, with control positioned at different rows the timesharing of fingerprint recognition transistor open, the fingerprint recognition sensor circuit according to
The fingerprint recognition induced signal detection finger print information of the fingerprint recognition line of induction output.
Display device described in the embodiment of the present invention includes above-mentioned fingerprint identification device.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications
Should be regarded as protection scope of the present invention.
Claims (12)
1. a kind of fingerprint recognition module, including multirow fingerprint recognition scan line arranged in a crossed manner on touch base plate and multiple row refer to
Line recognizes the line of induction, and the fingerprint recognition crystalline substance for being arranged on the infall of the fingerprint recognition scan line and the fingerprint recognition line of induction
Body pipe, the grid of the fingerprint recognition transistor is connected with the fingerprint recognition scan line, the source of the fingerprint recognition transistor
Pole is connected with the fingerprint recognition line of induction, it is characterised in that the fingerprint recognition module also includes：
It is arranged on the infrared light supply for touching the opposite side in side with the touch base plate；
The photosensitive unit connected one to one with the drain electrode of the fingerprint recognition transistor, is arranged on the touch base plate,
When finger touches the touch base plate, the photosensitive unit can receive the IR that finger is reflected back and according to reception
The intensity of the IR for arriving produces the different current signal of intensity.
2. fingerprint recognition module as claimed in claim 1, it is characterised in that the photosensitive unit includes：Light anode, time
Pole, opto-electronic conversion semiconductor layer and light shield layer between the light anode and the photocathode；The light anode with it is described
The drain electrode connection of fingerprint recognition transistor；
The opto-electronic conversion semiconductor layer is set corresponding to non-light-emitting area；
The light anode is transparency conductive electrode；
The light shield layer is arranged at the one side that the photocathode is not provided with opto-electronic conversion semiconductor layer, and the opto-electronic conversion is partly led
Orthographic projection of the body layer on the touch base plate is fallen completely among orthographic projection of the light shield layer on the touch base plate.
3. fingerprint recognition module as claimed in claim 2, it is characterised in that the light anode of the photosensitive unit is multiplexed with fingerprint
Identification electrode；The light anode is transparency conductive electrode.
4. fingerprint recognition module as claimed in claim 2, it is characterised in that also including fingerprint recognition public electrode；
The fingerprint recognition public electrode is multiplexed with the photocathode of all photosensitive units that the fingerprint recognition transistor includes；
The fingerprint recognition public electrode is transparency conductive electrode.
5. fingerprint recognition module as claimed in claim 4, it is characterised in that the fingerprint recognition public electrode and the fingerprint
Identification electrode is all the film-form electrode being made up of transparent conductive material.
6. fingerprint recognition module as claimed in claim 1, it is characterised in that the infrared light supply is arranged at the hair of display base plate
Light area.
7. the fingerprint recognition module as described in any claim in claim 1 to 6, it is characterised in that each two is adjacent
Spacing between the fingerprint identification unit more than or equal to 50 microns to be less than or equal to 70 microns.
8. a kind of fingerprint identification device, including fingerprint recognition scanning circuit and fingerprint recognition sensor circuit, it is characterised in that also wrap
The fingerprint recognition module as described in any claim in claim 1 to 7 is included, wherein,
The fingerprint recognition scanning circuit is connected with multirow fingerprint recognition scan line respectively, in the In vivo detection stage to all
Fingerprint recognition scan line all export opening control signal, it is brilliant with all fingerprint recognitions for controlling the fingerprint recognition module to include
Body pipe is all opened；
The fingerprint recognition sensor circuit is connected with the multiple row fingerprint recognition line of induction respectively, for detecting institute in the In vivo detection stage
The photo-signal that some fingerprint recognition line of induction sensings are obtained, and be with predetermined fluctuation mould when the photo-signal is detected
Judge there is biological living touch event during the current signal of formula.
9. fingerprint identification device as claimed in claim 8, it is characterised in that the fingerprint recognition scanning circuit is additionally operable to referring to
Line cognitive phase exports opening control signal to the multirow fingerprint recognition scan line successively, to control the fingerprint positioned at different rows
The timesharing of identification transistor is opened；
The fingerprint recognition sensor circuit is additionally operable to the fingerprint exported according to the fingerprint recognition line of induction in the fingerprint recognition stage
Identification induced signal detection finger print information.
10. a kind of driving method of fingerprint identification device, is applied to fingerprint identification device as claimed in claim 8 or 9, and it is special
Levy and be, the driving method includes：
In vivo detection step：In the In vivo detection stage, fingerprint recognition scanning circuit is all exported to all of fingerprint recognition scan line
Opening control signal, is all opened, fingerprint recognition induced electricity with all fingerprint recognition transistors for controlling fingerprint recognition module to include
The photo-signal that all of fingerprint recognition line of induction sensing is obtained is detected on road, and is with pre- when the photo-signal is detected
Judge there is biological living touch event when determining the current signal of fluctuation model.
11. driving methods as claimed in claim 10, it is characterised in that also include after the In vivo detection step：
Fingerprinting step：In the fingerprint recognition stage, the fingerprint recognition scanning circuit opens control to multirow output successively
Signal processed, to control the fingerprint recognition transistor timesharing positioned at different rows to open, the fingerprint recognition sensor circuit is according to
The fingerprint recognition induced signal detection finger print information of fingerprint recognition line of induction output.
12. a kind of display devices, it is characterised in that including fingerprint identification device as claimed in claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611030785.2A CN106778485A (en) | 2016-11-16 | 2016-11-16 | Fingerprint recognition module, device, driving method and display device |
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| CN201611030785.2A CN106778485A (en) | 2016-11-16 | 2016-11-16 | Fingerprint recognition module, device, driving method and display device |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN108415188A (en) * | 2018-05-02 | 2018-08-17 | 上海中航光电子有限公司 | A kind of liquid crystal display panel, display device and its unlocked by fingerprint method |
| CN108565354A (en) * | 2018-04-20 | 2018-09-21 | 京东方科技集团股份有限公司 | A kind of display panel and preparation method thereof and display device |
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| CN109359459A (en) * | 2018-10-26 | 2019-02-19 | 京东方科技集团股份有限公司 | Fingerprint identification method, fingerprint identification device and display module |
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| CN107390956A (en) * | 2017-07-31 | 2017-11-24 | 上海天马微电子有限公司 | A kind of touch-screen, display panel, display device |
| WO2019024561A1 (en) * | 2017-08-02 | 2019-02-07 | 华为技术有限公司 | Display screen, electronic device and fingerprint recognition method |
| CN108108717A (en) * | 2018-01-03 | 2018-06-01 | 京东方科技集团股份有限公司 | Fingerprint recognition panel and preparation method thereof, driving method and fingerprint identification device |
| CN108108717B (en) * | 2018-01-03 | 2020-06-05 | 京东方科技集团股份有限公司 | Fingerprint identification panel, manufacturing method and driving method thereof and fingerprint identification device |
| US10572752B2 (en) | 2018-01-03 | 2020-02-25 | Boe Technology Group Co., Ltd. | Fingerprint identification panel and preparation method thereof, driving method and fingerprint identification device |
| CN108565354A (en) * | 2018-04-20 | 2018-09-21 | 京东方科技集团股份有限公司 | A kind of display panel and preparation method thereof and display device |
| CN108415188B (en) * | 2018-05-02 | 2021-11-16 | 上海中航光电子有限公司 | Liquid crystal display panel, display device and fingerprint unlocking method thereof |
| CN108415188A (en) * | 2018-05-02 | 2018-08-17 | 上海中航光电子有限公司 | A kind of liquid crystal display panel, display device and its unlocked by fingerprint method |
| WO2019214206A1 (en) * | 2018-05-09 | 2019-11-14 | Boe Technology Group Co., Ltd. | Fingerprint detection touch control display apparatus, array substrate, and method of fabricating fingerprint detection touch control display apparatus |
| US11232276B2 (en) | 2018-05-09 | 2022-01-25 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Fingerprint detection touch control display apparatus, array substrate, and method of fabricating fingerprint detection touch control display apparatus |
| CN109543541A (en) * | 2018-10-23 | 2019-03-29 | 北京的卢深视科技有限公司 | A kind of biopsy method and device |
| CN109543541B (en) * | 2018-10-23 | 2024-03-08 | 合肥的卢深视科技有限公司 | Living body detection method and device |
| CN112930551A (en) * | 2018-10-24 | 2021-06-08 | 株式会社日本显示器 | Fingerprint detection device and display device with fingerprint detection device |
| CN109359459A (en) * | 2018-10-26 | 2019-02-19 | 京东方科技集团股份有限公司 | Fingerprint identification method, fingerprint identification device and display module |
| CN109359459B (en) * | 2018-10-26 | 2021-01-26 | 京东方科技集团股份有限公司 | Fingerprint identification method, fingerprint identification device and display module |
| CN109656420A (en) * | 2019-02-27 | 2019-04-19 | 京东方科技集团股份有限公司 | Color membrane substrates, display device and its control device |
| CN110232268A (en) * | 2019-05-31 | 2019-09-13 | 武汉华星光电技术有限公司 | A kind of fingerprint identification method, electronic equipment and display panel |
| CN112069942B (en) * | 2020-08-24 | 2021-07-02 | 深圳阜时科技有限公司 | Optical detection system and electronic equipment under screen |
| CN112069942A (en) * | 2020-08-24 | 2020-12-11 | 深圳阜时科技有限公司 | Optical detection system and electronic equipment under screen |
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