CN106096514A - Fingerprint identification unit and driving method, display base plate and display device - Google Patents
Fingerprint identification unit and driving method, display base plate and display device Download PDFInfo
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- CN106096514A CN106096514A CN201610382327.9A CN201610382327A CN106096514A CN 106096514 A CN106096514 A CN 106096514A CN 201610382327 A CN201610382327 A CN 201610382327A CN 106096514 A CN106096514 A CN 106096514A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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Abstract
The invention discloses a kind of fingerprint identification unit and driving method, display base plate and display device.Fingerprint identification unit is arranged in display base plate, fingerprint identification unit includes: switch element, driver element and electric capacity figure, switch element, driver element and electric capacity figure are connected to node, and switch element is connected with grid line and data wire, driver element is connected with signal input line and output line；When finger does not presses, opening under the control of the signal that switch element exports at grid line, node is charged by data wire by the switch element opened；When finger presses, signal input line is to driver element input drive signal, and driver element reads signal by output line output under the control of the voltage of node, reads signal for identifying the fingerprint of finger pressing.Present invention achieves the fingerprint recognition of whole screen in display device；And achieve and use same manufacturing process to manufacture with display base plate internal structure, and then reduce cost.
Description
Technical field
The present invention relates to Display Technique field, particularly to a kind of fingerprint identification unit and driving method, display base plate
And display device.
Background technology
In the later stage nineties 20th century, The Hong Kong Polytechnic University and Tsing-Hua University take the lead in having started fingerprint identification technology research neck
Territory, fingerprint recognition has precision height, speed is fast, price is low, user's acceptance advantages of higher, since therefore this field is started, just
Having obtained the abundant attention of academia, the colleges and universities of lot of domestic and international and scientific research institution join one after another in this research field, and take
Obtained a series of achievement.
At present, the application of fingerprint identification technology is more and more extensive.And along with the development of Display Technique, more and more show
Fingerprint identification function it is provided with on device.In prior art, generally the device with fingerprint identification function is arranged at display dress
The outside put, this device with fingerprint identification function is generally only capable of realizing the fingerprint recognition of local, such as: the homepage of mobile phone
(Home) fingerprint recognition of key position.
Prior art exists following technical problem:
1) device in prior art with fingerprint identification function is only capable of realizing the fingerprint recognition of local, it is impossible to realize display
The fingerprint recognition of whole screen in device；
2) device with fingerprint identification function being separately provided needs single manufacturing process to manufacture, thus improves
Cost.
Summary of the invention
The present invention provides a kind of fingerprint identification unit and driving method, display base plate and display device, is used for realizing showing
In showing device whole screen fingerprint recognition and reduce cost.
For achieving the above object, the invention provides a kind of fingerprint identification unit, described fingerprint identification unit is arranged at aobvious
Showing in substrate, described fingerprint identification unit includes: switch element, driver element and electric capacity figure, described switch element, described in drive
Moving cell and electric capacity figure are connected to node, and described switch element is connected with grid line and data wire, described driver element with
Signal input line and output line connect；
When finger does not presses, open under the control of the signal that described switch element exports at described grid line, data
Node is charged by line by the switch element opened；
When finger presses, signal input line is to described driver element input drive signal, and described driver element is at node
Voltage control under by output line output read signal, described reading signal for identify finger pressing finger
Stricture of vagina.
Alternatively, described switch element includes that the first switching tube, described driver element include second switch pipe；
The control pole of described first switching tube and described grid line connect, the first pole of described first switching tube and described data
Line connects, and the second pole of described first switching tube and described node connect；
The control pole of described second switch pipe and described node connect, the first pole of described second switch pipe and described signal
Input line connects, and the second pole of described second switch pipe and described output line connect.
Alternatively, when finger does not presses, under the control of the signal that described first switching tube exports at described grid line
Opening, node is charged by data wire by the first switching tube opened；
When finger presses, signal input line is to the second switch pipe input drive signal opened, described second switch pipe
Reading signal by output line output under the control of the voltage of node, described reading signal is used for identifying finger pressing
Fingerprint.
Alternatively, when finger presses, the voltage V1=Q/ (C1+C) of described node, wherein, C1 is the electricity of electric capacity figure
Capacitance, C is the capacitance of the fingerprint of finger pressing.
For achieving the above object, the invention provides a kind of display base plate, including: grid line, data wire, signal input line,
Output line and above-mentioned fingerprint identification unit, described grid line and described data wire intersection limit pixel cell, multiple pixels
Unit forms a pixel, is provided with fingerprint identification unit in each or every multiple pixel.
Alternatively, it is provided with in the pixel of fingerprint identification unit, a pixel cell is provided with fingerprint identification unit, its
Remaining pixel cell is provided with pixel drive unit and pixel electrode.
Alternatively, it is provided with in the pixel of fingerprint identification unit, a pixel cell is provided with fingerprint identification unit, its
Remaining pixel cell is provided with pixel drive unit.
Switch alternatively, within the touch-control stage, in the pixel cell that a plurality of grid line and a plurality of data lines intersection limit
Unit forms a touch control electrode.
For achieving the above object, the invention provides a kind of display device, including: above-mentioned display base plate.
For achieving the above object, the invention provides the driving method of a kind of fingerprint identification unit, described fingerprint recognition list
Unit includes: switch element, driver element and electric capacity figure, and described switch element, described driver element and electric capacity figure are all connected with
To node, and described switch element is connected with grid line and data wire, described driver element and signal input line and output line
Connect；
Described method includes:
When finger does not presses, open under the control of the signal that described switch element exports at described grid line, data
Node is charged by line by the switch element opened；
When finger presses, signal input line is to described driver element input drive signal, and described driver element is at node
Voltage control under by output line output read signal, described reading signal for identify finger pressing finger
Stricture of vagina.
The method have the advantages that
In the fingerprint identification unit of present invention offer and the technical scheme of driving method, display base plate and display device thereof,
Fingerprint identification unit is arranged in display base plate, and fingerprint identification unit includes switch element, driver element and electric capacity figure, switch
Unit is connected with grid line and data wire, and driver element is connected with signal input line and output line, and fingerprint identification unit can be real
Existing fingerprint identification function, in the present invention, this fingerprint identification unit is arranged in display base plate, it is achieved thereby that whole in display device
The fingerprint recognition of screen；And achieve and use same manufacturing process to manufacture with display base plate internal structure, and then reduce
Cost.
Accompanying drawing explanation
The structural representation of a kind of fingerprint identification unit that Fig. 1 provides for the embodiment of the present invention one；
The structural representation of a kind of fingerprint identification unit that Fig. 2 provides for the embodiment of the present invention two；
The structural representation of a kind of display base plate that Fig. 3 provides for the embodiment of the present invention three；
Fig. 4 is the schematic diagram of fingerprint identification unit in Fig. 3；
Fig. 5 be in Fig. 3 fingerprint identification unit as the schematic diagram of touch control electrode；
Fig. 6 is the sequential chart of the driving process of display base plate in Fig. 3；
The structural representation of a kind of display base plate that Fig. 7 provides for the embodiment of the present invention four；
The flow chart of the driving method of a kind of fingerprint identification unit that Fig. 8 provides for the embodiment of the present invention six.
Detailed description of the invention
For making those skilled in the art be more fully understood that technical scheme, below in conjunction with the accompanying drawings the present invention is carried
Being described in detail of the fingerprint identification unit of confession and driving method, display base plate and display device.
The structural representation of a kind of fingerprint identification unit that Fig. 1 provides for the embodiment of the present invention one, as it is shown in figure 1, this refers to
Stricture of vagina recognition unit is arranged in display base plate, and this fingerprint identification unit includes: switch element 11, driver element 12 and electric capacity figure
13, switch element 11, driver element 12 and electric capacity figure 13 are connected to node D, and switch element 11 and grid line and data wire
Connecting, driver element 12 is connected with signal input line and output line.
When finger does not presses, opening under the control of the signal that switch element 11 exports at grid line, data wire passes through
Node D is charged by the switch element opened.When finger presses, signal input line, to driver element 12 input drive signal, drives
Moving cell 12 reads signal by output line output under the control of the voltage of node D, reads signal and sells for identification
Refer to the fingerprint of pressing.Wherein, when finger presses, switch element 11 can be closed or in vacant state.
The scheme provided in the present embodiment is the work process that fingerprint identification unit is in the fingerprint recognition stage.
In the fingerprint identification unit that the present embodiment provides, fingerprint identification unit is arranged in display base plate, fingerprint recognition list
Unit includes switch element, driver element and electric capacity figure, and switch element is connected with grid line and data wire, and driver element is defeated with signal
Entering line and output line connects, fingerprint identification unit can realize fingerprint identification function, this fingerprint identification unit in the present embodiment
It is arranged in display base plate, it is achieved thereby that the fingerprint recognition of whole screen in display device；And achieve with display base plate inside
Structure uses same manufacturing process to manufacture, and then reduces cost.
The structural representation of a kind of fingerprint identification unit that Fig. 2 provides for the embodiment of the present invention two, as in figure 2 it is shown, this reality
Executing example on the basis of above-described embodiment one, switch element includes the first switch transistor T 1, and driver element includes second switch pipe T2.
The control pole of the first switch transistor T 1 and grid line connect, and the first pole of the first switch transistor T 1 and data wire connect, the first switch transistor T 1
The second pole and node D connect.The control pole of second switch pipe T2 and node D connect, first pole of second switch pipe T2 and letter
Number input line connects, and second pole of second switch pipe T2 and output line connect.
In the present embodiment, the material of electric capacity figure 13 can be transparent conductive material or transparent metal, such as: transparent leads
Electric material can be ITO.
In the present embodiment, it is preferable that signal input line be arranged in parallel with grid line, output line is parallel with data wire to be set
Put.
When finger does not presses, opening under the control of the signal that the first switch transistor T 1 exports at grid line, data wire leads to
Cross the first switch transistor T 1 opened to charge node D, i.e. electric capacity figure 13 is entered by data wire by the first switch transistor T 1 opened
Row charging, so that the voltage of node D is V0, the now voltage V=Q/C1 of node D, wherein, Q is the storage electricity of electric capacity figure 13
Amount, C1 is the capacitance of electric capacity figure 13.
When finger presses, signal input line is to second switch pipe T2 input drive signal, and second switch pipe T2 is at node
Voltage control under by output line output read signal, read signal for identify finger pressing fingerprint.The
Closing under the control of the signal that one switch transistor T 1 exports at grid line, now data wire can continue to keep to the first switch transistor T 1
Output signal；Or, grid line and data wire are all in unsettled (floating) state.The voltage V=Q/ of node D when finger does not presses
C1, the voltage V1=Q/ (C1+C) of node D during finger pressing, wherein, C is the capacitance of finger print, from above-mentioned two formula
It can be seen that V ＞ V1.The electric capacity of a finger print in parallel on electric capacity figure 13 is equivalent to when finger presses.This time
The voltage of some D is as the grid voltage of second switch pipe T2, due to grid voltage (that is: the electricity of node D of second switch pipe T2
Pressure) difference can cause the reading signal that output line export different, and the fingerprint therefore pressed for different fingers, signal is defeated
The reading signal of outlet output is different.The fingerprint of finger possesses ridge and paddy, when the fingerprint of finger pressing is paddy, it may be assumed that paddy
During pressing, the voltage V1a=Q/ (C1+C1a) of C=C1a, node D, wherein, C1a is the capacitance of paddy；Finger when finger pressing
Stricture of vagina is ridge, it may be assumed that during ridge pressing, the voltage V1b=Q/ (C1+C1b) of C=C1b, node D, and wherein, C1b is the capacitance of ridge, by
In C1a ＞ C1b, when therefore the fingerprint of finger pressing is paddy, the fingerprint reading signal and finger pressing of output line output is
During ridge, the reading signal of output line output is different.In sum, may recognize that what finger pressed by reading signal
Fingerprint be paddy or finger pressing fingerprint be ridge.
The scheme provided in the present embodiment is the work process that fingerprint identification unit is in the fingerprint recognition stage.
In the fingerprint identification unit that the present embodiment provides, fingerprint identification unit is arranged in display base plate, fingerprint recognition list
Unit includes switch element, driver element and electric capacity figure, and switch element is connected with grid line and data wire, and driver element is defeated with signal
Entering line and output line connects, fingerprint identification unit can realize fingerprint identification function, this fingerprint identification unit in the present embodiment
It is arranged in display base plate, it is achieved thereby that the fingerprint recognition of whole screen in display device；And achieve with display base plate inside
Structure uses same manufacturing process to manufacture, and then reduces cost.
The structural representation of a kind of display base plate that Fig. 3 provides for the embodiment of the present invention three, as it is shown on figure 3, this display base
Plate includes: grid line, data wire, signal input line, output line and fingerprint identification unit 1, and grid line and data wire intersection limit
Going out pixel cell 2, multiple pixel cells 2 form a pixel 3, are provided with fingerprint identification unit 1 in each pixel 3.
Alternatively, being provided with fingerprint identification unit in every multiple pixels, this kind of situation the most specifically draws.
Display base plate includes a plurality of grid line, and this plurality of grid line is Gate1, Gate2 ..., Gaten；Display base plate includes
A plurality of data lines, this plurality of data lines is Data1, Data2 ..., Gaten.A plurality of grid line and a plurality of data lines intersection limit
Going out multiple pixel cell 2, in the present embodiment, four pixel cells 2 form a pixel 3.
It is provided with in the pixel 3 of fingerprint identification unit 1, a pixel cell 2 is provided with fingerprint identification unit 1, remaining
Pixel cell 2 is provided with pixel drive unit 4.Wherein, pixel drive unit 4 can be used for driving corresponding sub-pixel.This reality
Execute in example, in a pixel 3, three pixel cells 2 are provided with pixel drive unit 4, a pixel cell 2 is provided with
Fingerprint identification unit 1.Pixel drive unit 4 can include thin film transistor (TFT) and the pixel electrode being connected with thin film transistor (TFT).Three
Pixel drive unit 4 is respectively used to drive red sub-pixel, green sub-pixels and blue subpixels.
In the present embodiment, each pixel 3 all has in a pixel cell 2 and be separately provided a fingerprint identification unit 1, from
And ensure that and each pixel 3 all exists a fingerprint identification unit 1.In actual applications, alternatively, can be in every multiple pixels
In be provided with fingerprint identification unit, so without arranging fingerprint identification unit in each pixel, it is only necessary to set in partial pixel
Putting fingerprint identification unit, this kind of situation the most specifically draws.
Fig. 4 is the schematic diagram of fingerprint identification unit in Fig. 3, and as shown in Figure 4, fingerprint identification unit corresponds to data wire
Data4, the description to the concrete structure of fingerprint identification unit can be found in the description in above-described embodiment one or embodiment two, herein
Repeat no more.
In the present embodiment, the driving process of display base plate can include display stage, touch-control stage and fingerprint recognition stage.?
In the touch-control stage, the switch element in the pixel cell that a plurality of grid line and multiple data wire intersection limit forms a touch-control electricity
Pole.Fig. 5 is that in Fig. 3, fingerprint identification unit is as the schematic diagram of touch control electrode, as it is shown in figure 5, the output line ground connection in Fig. 3
Processing, therefore second switch pipe T2 the most specifically draws.Within the touch-control stage, three grid lines and three data line intersection limit
Switch element in pixel cell forms touch control electrode, such as: grid line Gate1, Gate2, Gate3 and data wire Data4,
Switch element (the first switch transistor T 1) in 9 pixel cells that Data8, Data12 intersection limits forms touch control electrode 1, grid
Line Gate1, Gate2, Gate3 and data wire Data16, Data20, Data24 intersect opening in 9 pixel cells limited
Close unit (the first switch transistor T 1) and form touch control electrode 2.Within the touch-control stage, adapter MUX3 by grid line Gate1, Gate2,
Gate3 opens simultaneously, and by grid line Gate1, Gate2, Gate3 to corresponding multiple first switch transistor T 1 export control signal with
Making the first switch transistor T 1 open, data wire Data4, Data8, Data12 are opened by adapter MUX1 simultaneously, now data wire
Data4, Data8, Data12 hold signal end certainly as touch control electrode 1, this touch control electrode 1 from hold signal end can be simultaneously as
The driving signal end (Tx) of touch control electrode 1 and induced signal end (Rx)；Adapter MUX2 by data wire Data16, Data20,
Data24 opens simultaneously, and now data wire Data16, Data20, Data24 holds signal end certainly as touch control electrode 2, this touch-control
Certainly the appearance signal end of electrode 2 can be simultaneously as the driving signal end (Tx) of touch control electrode 2 and induced signal end (Rx).
Fig. 6 is the sequential chart of the driving process of display base plate in Fig. 3, and as shown in Figure 6, the driving process of display base plate includes
Display stage, touch-control stage and fingerprint recognition stage.
In the display stage, use the mode of progressive scan, drive corresponding sub-pixel by pixel drive unit, to realize
Picture shows.
Description to the touch-control stage can be found in the description in the present embodiment, is not repeated to describe herein.
Description to the fingerprint recognition stage can be found in the description in embodiment one or embodiment two, is not repeated to retouch herein
State.
In the display base plate that the present embodiment provides, grid line and data wire intersection limit pixel cell, multiple pixel cells
Forming a pixel, be provided with fingerprint identification unit in each or every multiple pixel, fingerprint identification unit includes that switch is single
Unit, driver element and electric capacity figure, switch element is connected with grid line and data wire, and driver element is defeated with signal input line and signal
Outlet connects, and fingerprint identification unit can realize fingerprint identification function, and in the present embodiment, this fingerprint identification unit is arranged at display base
In plate, it is achieved thereby that the fingerprint recognition of whole screen in display device；And achieve and use same with display base plate internal structure
Manufacturing process manufactures, and then reduces cost.Fingerprint recognition device is built in the pixel of display base plate by the present embodiment,
Thus can effectively identify the fingerprint of fingerprint finger.
The structural representation of a kind of display base plate that Fig. 7 provides for the embodiment of the present invention four, as it is shown in fig. 7, this display base
Plate includes: grid line, data wire, signal input line, output line and fingerprint identification unit 1, and grid line and data wire intersection limit
Going out pixel cell 2, multiple pixel cells 2 form a pixel 3, are provided with fingerprint identification unit 1 in each pixel 3.
Alternatively, being provided with fingerprint identification unit in every multiple pixels, this kind of situation the most specifically draws.
Display base plate includes a plurality of grid line, and this plurality of grid line is Gate1, Gate2 ..., Gaten；Display base plate includes
A plurality of data lines, this plurality of data lines is Data1, Data2 ..., Gaten.A plurality of grid line and a plurality of data lines intersection limit
Going out multiple pixel cell 2, in the present embodiment, four pixel cells 2 form a pixel 3.
It is provided with in the pixel 3 of fingerprint identification unit 1, a pixel cell 2 is provided with fingerprint identification unit 1 and pixel
Driver element 4, is provided with pixel drive unit 4 in rest of pixels unit 2.Wherein, pixel drive unit 4 can be used for driving correspondence
Sub-pixel.In the present embodiment, in a pixel 3, two pixel cells 2 are provided with pixel drive unit 4, a pixel
Unit 2 is provided with pixel drive unit 4 and fingerprint identification unit 1.Pixel drive unit 4 can include thin film transistor (TFT) and with thin
The pixel electrode that film transistor connects.Three pixel drive unit 4 are respectively used to drive red sub-pixel, green sub-pixels and indigo plant
Sub-pixels.
In the display base plate that the present embodiment provides, grid line and data wire intersection limit pixel cell, multiple pixel cells
Forming a pixel, be provided with fingerprint identification unit in each or every multiple pixel, fingerprint identification unit includes that switch is single
Unit, driver element and electric capacity figure, switch element is connected with grid line and data wire, and driver element is defeated with signal input line and signal
Outlet connects, and fingerprint identification unit can realize fingerprint identification function, and in the present embodiment, this fingerprint identification unit is arranged at display base
In plate, it is achieved thereby that the fingerprint recognition of whole screen in display device；And achieve and use same with display base plate internal structure
Manufacturing process manufactures, and then reduces cost.Fingerprint recognition device is built in the pixel of display base plate by the present embodiment,
Thus can effectively identify the fingerprint of fingerprint finger.
The embodiment of the present invention five provides a kind of display device, and this display device includes: display base plate.Wherein, display base
Plate can use the display base plate that above-described embodiment three or embodiment four provide.
In the present embodiment, display base plate also includes counter substrate, and counter substrate is oppositely arranged with display base plate.Display base plate
Can be array base palte, then counter substrate can be color membrane substrates.
In the display device that the present embodiment provides, grid line and data wire intersection limit pixel cell, multiple pixel cells
Forming a pixel, be provided with fingerprint identification unit in each or every multiple pixel, fingerprint identification unit includes that switch is single
Unit, driver element and electric capacity figure, switch element is connected with grid line and data wire, and driver element is defeated with signal input line and signal
Outlet connects, and fingerprint identification unit can realize fingerprint identification function, and in the present embodiment, this fingerprint identification unit is arranged at display base
In plate, it is achieved thereby that the fingerprint recognition of whole screen in display device；And achieve and use same with display base plate internal structure
Manufacturing process manufactures, and then reduces cost.
The flow chart of the driving method of a kind of fingerprint identification unit that Fig. 8 provides for the embodiment of the present invention six, such as Fig. 8 institute
Showing, fingerprint identification unit includes: switch element, driver element and electric capacity figure, and switch element, driver element and electric capacity figure are equal
Being connected to node, and switch element is connected with grid line and data wire, driver element is connected with signal input line and output line.
The method includes:
Step 101, when finger does not presses, open under the control of the signal that switch element exports at grid line, data
Node is charged by line by the switch element opened.
Step 102, when finger presses, signal input line is to driver element input drive signal, and driver element is at node
Voltage control under by output line output read signal, read signal for identify finger pressing fingerprint.
The driving method of the fingerprint identification unit that the present embodiment provides can be used for driving above-described embodiment one or embodiment two
The fingerprint identification unit provided.
In the driving method of the fingerprint identification unit that the present embodiment provides, fingerprint identification unit is arranged in display base plate,
Fingerprint identification unit includes switch element, driver element and electric capacity figure, and switch element is connected with grid line and data wire, drives single
Unit is connected with signal input line and output line, and fingerprint identification unit can realize fingerprint identification function, and in the present embodiment, this refers to
Stricture of vagina recognition unit is arranged in display base plate, it is achieved thereby that the fingerprint recognition of whole screen in display device；And achieve with aobvious
Show that substrate internal structure uses same manufacturing process to manufacture, and then reduce cost.
It is understood that the principle that is intended to be merely illustrative of the present of embodiment of above and the exemplary enforcement that uses
Mode, but the invention is not limited in this.For those skilled in the art, in the essence without departing from the present invention
In the case of god and essence, can make various modification and improvement, these modification and improvement are also considered as protection scope of the present invention.
Claims (10)
1. a fingerprint identification unit, it is characterised in that described fingerprint identification unit is arranged in display base plate, described fingerprint is known
Other unit includes: switch element, driver element and electric capacity figure, and described switch element, described driver element and electric capacity figure are equal
Being connected to node, and described switch element is connected with grid line and data wire, described driver element is defeated with signal input line and signal
Outlet connects；
When finger does not presses, opening under the control of the signal that described switch element exports at described grid line, data wire leads to
Cross the switch element opened node is charged；
When finger presses, signal input line is to described driver element input drive signal, and described driver element is at the electricity of node
Reading signal by output line output under the control of pressure, described reading signal is for identifying the fingerprint of finger pressing.
Fingerprint identification unit the most according to claim 1, it is characterised in that described switch element includes the first switching tube,
Described driver element includes second switch pipe；
The control pole of described first switching tube and described grid line connect, and the first pole of described first switching tube and described data wire are even
Connecing, the second pole of described first switching tube and described node connect；
The control pole of described second switch pipe and described node connect, the first pole of described second switch pipe and the input of described signal
Line connects, and the second pole of described second switch pipe and described output line connect.
Fingerprint identification unit the most according to claim 2, it is characterised in that when finger does not presses, described first switch
Opening under the control of the signal that pipe exports at described grid line, node is charged by data wire by the first switching tube opened；
When finger presses, signal input line is to the second switch pipe input drive signal opened, described second switch Guan Jie
Reading signal by output line output under the control of the voltage of point, described reading signal is for identifying the finger of finger pressing
Stricture of vagina.
4. according to the arbitrary described fingerprint identification unit of claim 2 to 4, it is characterised in that when finger presses, described node
Voltage V1=Q/ (C1+C), wherein, C1 is the capacitance of electric capacity figure, and C is the capacitance of fingerprint of finger pressing.
5. a display base plate, it is characterised in that including: grid line, data wire, signal input line, output line and right are wanted
1 to 4 arbitrary described fingerprint identification unit, described grid line and described data wire intersection is asked to limit pixel cell, multiple pixels
Unit forms a pixel, is provided with fingerprint identification unit in each or every multiple pixel.
Display base plate the most according to claim 5, it is characterised in that be provided with in the pixel of fingerprint identification unit, one
Pixel cell is provided with fingerprint identification unit, rest of pixels unit is provided with pixel drive unit and pixel electrode.
Display base plate the most according to claim 5, it is characterised in that be provided with in the pixel of fingerprint identification unit, one
Pixel cell is provided with fingerprint identification unit, rest of pixels unit is provided with pixel drive unit.
Display base plate the most according to claim 5, it is characterised in that within the touch-control stage, a plurality of grid line and many data
Switch element in the pixel cell that line intersection limits forms a touch control electrode.
9. a display device, it is characterised in that including: the arbitrary described display base plate of claim 5 to 8.
10. the driving method of a fingerprint identification unit, it is characterised in that described fingerprint identification unit includes: switch element, drive
Moving cell and electric capacity figure, described switch element, described driver element and electric capacity figure are connected to node, and described switch is single
Unit is connected with grid line and data wire, and described driver element is connected with signal input line and output line；
Described method includes:
When finger does not presses, opening under the control of the signal that described switch element exports at described grid line, data wire leads to
Cross the switch element opened node is charged；
When finger presses, signal input line is to described driver element input drive signal, and described driver element is at the electricity of node
Reading signal by output line output under the control of pressure, described reading signal is for identifying the fingerprint of finger pressing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610382327.9A CN106096514A (en) | 2016-06-01 | 2016-06-01 | Fingerprint identification unit and driving method, display base plate and display device |
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| CN201610382327.9A CN106096514A (en) | 2016-06-01 | 2016-06-01 | Fingerprint identification unit and driving method, display base plate and display device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN109637367A (en) * | 2018-12-28 | 2019-04-16 | 厦门天马微电子有限公司 | Display panel and display device |
| US11847280B2 (en) | 2017-02-23 | 2023-12-19 | Sitronix Technology Corp | Touch panel and touch detection circuit thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018126515A1 (en) * | 2017-01-06 | 2018-07-12 | 武汉华星光电技术有限公司 | Display screen and electronic device |
| CN108470153A (en) * | 2017-02-23 | 2018-08-31 | 矽创电子股份有限公司 | Identification of fingerprint panel and its identification of fingerprint circuit |
| CN108470153B (en) * | 2017-02-23 | 2021-11-12 | 矽创电子股份有限公司 | Fingerprint identification panel and fingerprint identification circuit thereof |
| US11810394B2 (en) | 2017-02-23 | 2023-11-07 | Sitronix Technology Corp. | Fingerprint identification panel and fingerprint identification circuit thereof |
| US11847280B2 (en) | 2017-02-23 | 2023-12-19 | Sitronix Technology Corp | Touch panel and touch detection circuit thereof |
| CN109541842A (en) * | 2018-09-07 | 2019-03-29 | 友达光电股份有限公司 | Display panel |
| CN109637367A (en) * | 2018-12-28 | 2019-04-16 | 厦门天马微电子有限公司 | Display panel and display device |
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Application publication date: 20161109 |