CN107422920A - Array base palte and display panel - Google Patents
Array base palte and display panel Download PDFInfo
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- CN107422920A CN107422920A CN201710736746.2A CN201710736746A CN107422920A CN 107422920 A CN107422920 A CN 107422920A CN 201710736746 A CN201710736746 A CN 201710736746A CN 107422920 A CN107422920 A CN 107422920A
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- 239000000758 substrate Substances 0.000 claims abstract description 63
- 239000004065 semiconductor Substances 0.000 claims abstract description 5
- 238000005259 measurement Methods 0.000 claims description 29
- 238000003860 storage Methods 0.000 claims description 16
- 230000005611 electricity Effects 0.000 claims description 11
- 239000010409 thin film Substances 0.000 claims description 11
- 238000004020 luminiscence type Methods 0.000 claims description 9
- 230000035945 sensitivity Effects 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 239000002210 silicon-based material Substances 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 229910021417 amorphous silicon Inorganic materials 0.000 claims description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 3
- 239000010408 film Substances 0.000 claims description 2
- 239000013078 crystal Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 16
- 101100112673 Rattus norvegicus Ccnd2 gene Proteins 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000003825 pressing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005401 electroluminescence Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical compound O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005036 potential barrier Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
-
- 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
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04105—Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Multimedia (AREA)
- Image Input (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The embodiment of the invention discloses a kind of array base palte and display panel, the array base palte includes：Substrate；The pressure sensor on substrate is formed, pressure sensor includes sensor main body；Sensor main body is semi-conducting material；First electrode, the side of substrate is deviated from positioned at pressure sensor, and upright projection of upright projection of the first electrode on substrate with sensor main body on substrate at least partly overlaps；Second electrode, between pressure sensor and substrate, upright projection of upright projection of the second electrode on substrate with sensor main body on substrate at least partly overlaps；First electrode, sensor main body and second electrode collectively form the photodiode in fingerprint identification unit.The array base palte that the application provides can reduce the area of pressure sensor and the array base palte occupied by fingerprint identification unit, reduce the influence of the set location of other components in its array substrate and function etc..
Description
Technical field
The present embodiments relate to touch-control pressure sensing technologies and fingerprint identification technology, more particularly to a kind of array base palte
And display panel.
Background technology
At present, display panel is widely used in mobile phone, tablet personal computer, the electronics such as information enquiry machine in public place hall
In equipment.So, the mark that user need to only be touched on the electronic equipment with finger can be realized as grasping the electronic equipment
Make, eliminate dependence of the user to other input equipments (such as keyboard and mouse), make man-machine interaction more simple.
In order to preferably meet user's request, generally it is additionally provided with display panel and touches display surface for detecting user
The pressure sensor of touch-control pressure size during plate, and for carrying out the fingerprint identification unit of fingerprint recognition with abundant touch technology
Application.But at present in display panel, pressure sensor and fingerprint identification unit are respectively arranged at array base palte
Diverse location so that the area of the array base palte occupied by pressure sensor and fingerprint identification unit is larger, for array base palte
Set location and function of other upper components etc. have a great influence.
The content of the invention
The present invention provides a kind of array base palte and display panel, to realize reduction pressure sensor and fingerprint identification unit institute
The area of the array base palte occupied, reduce the influence of the set location of other components in its array substrate and function etc..
In a first aspect, the embodiments of the invention provide a kind of array base palte, the array base palte includes：
Substrate；
Pressure sensor on the substrate is formed, the pressure sensor includes sensor main body, the first power supply is believed
Number input, second source signal input part, the first induced signal measurement end and the second induced signal measurement end；The sensor
Main body is semi-conducting material；The sensor main body is the polygonized structure for including at least four sides, including disjunct first
While and when second, and the disjunct 3rd while and when the 4th, first power supply signal input is located at first side, institute
State second source signal input part and be located at second side, for the pressure sensor input offset voltage signal；It is described
First induced signal measurement end is located at the 3rd side, and the second induced signal measurement end is located at the 4th side, for from
The pressure sensor exports pressure sensitivity detection signal；
First electrode, the side of the substrate is deviated from positioned at the pressure sensor, the first electrode is in the substrate
On upright projection and the sensor main body upright projection on the substrate at least partly overlap；
Second electrode, between the pressure sensor and the substrate, the second electrode is on the substrate
Upright projection of the upright projection with the sensor main body on the substrate at least partly overlaps；
Wherein, the first electrode, the sensor main body and the second electrode collectively form fingerprint identification unit
In photodiode；First power supply signal input, the second source signal input part, first induced signal
Any two, which separates, among measurement end, the second induced signal measurement end, the first electrode and the second electrode is set.
Second aspect, the embodiment of the present invention additionally provide a kind of display panel, and the display panel includes the embodiment of the present invention
Any one array base palte provided.
The embodiment of the present invention away from the side of the substrate in pressure sensor by setting first electrode, in the pressure
Second electrode, and the upright projection of the first electrode on the substrate and the biography are set between sensor and the substrate
The upright projection of sensor main body on the substrate at least partly overlaps；The upright projection of the second electrode on the substrate
At least partly overlapped with the upright projection of the sensor main body on the substrate, so that the first electrode, the sensing
Device main body and the second electrode collectively form the photodiode in fingerprint identification unit, solve existing array base palte
The area of array base palte occupied by middle pressure sensor and fingerprint identification unit is larger, for other components on array base palte
Set location and have a great influence the problem of such as function, realize occupied by reduction pressure sensor and fingerprint identification unit
The area of array base palte, reduce the purpose of the influence of the set location of other components in its array substrate and function etc..
Brief description of the drawings
Fig. 1 a are a kind of structural representation of array base palte provided in an embodiment of the present invention；
Fig. 1 b are the cross-sectional view of the A1-A2 along Fig. 1 a；
Fig. 2 is the equivalent circuit diagram of pressure sensor in Fig. 1 a；
Fig. 3 a are the structural representation of another array base palte provided in an embodiment of the present invention；
Fig. 3 b are the structural representation of another array base palte provided in an embodiment of the present invention；
Fig. 4 a are the structural representation of another array base palte provided in an embodiment of the present invention；
Fig. 4 b are the structural representation of second electrode in Fig. 4 a；
Fig. 5 is the structural representation of another array base palte provided in an embodiment of the present invention；
Fig. 6 a are the structural representation of another array base palte provided in an embodiment of the present invention；
Fig. 6 b are the cross-sectional view of the B1-B2 along Fig. 6 a；
Fig. 7 is the structural representation of another array base palte provided in an embodiment of the present invention；
Fig. 8 is the structural representation of another array base palte provided in an embodiment of the present invention；
Fig. 9 is the fundamental diagram that a kind of fingerprint identification unit provided in an embodiment of the present invention carries out fingerprint recognition；
Figure 10 is a kind of electrical block diagram of fingerprint identification unit provided in an embodiment of the present invention；
Figure 11 is the electrical block diagram of another fingerprint identification unit provided in an embodiment of the present invention；
Figure 12 is the electrical block diagram of another fingerprint identification unit provided in an embodiment of the present invention；
Figure 13 is the electrical block diagram of another fingerprint identification unit provided in an embodiment of the present invention；
Figure 14 is the electrical block diagram of another fingerprint identification unit provided in an embodiment of the present invention；
Figure 15 is the electrical block diagram of another fingerprint identification unit provided in an embodiment of the present invention；
Figure 16 is a kind of structural representation of display panel provided in an embodiment of the present invention.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that in order to just
Part related to the present invention rather than entire infrastructure are illustrate only in description, accompanying drawing.
Fig. 1 a are a kind of structural representation of array base palte provided in an embodiment of the present invention, and Fig. 1 b are the A1-A2 along Fig. 1 a
Cross-sectional view.Referring to Fig. 1 a and Fig. 1 b, the array base palte includes：
Substrate 10；
Pressure sensor 13 on the substrate 10 is formed, pressure sensor 13 includes sensor main body 130, the first power supply is believed
Number input Vin1, second source signal input part Vin2, the first induced signal measurement end Vout1 and the measurement of the second induced signal
Hold Vout2；Sensor main body 130 is semi-conducting material；Sensor main body 130 is the polygonized structure for including at least four sides,
Including disjunct first at 131 and second 132, and the disjunct 3rd at 133 and the 4th 134, the first power supply letter
Number input Vin1 is located at the first side 131, and second source signal input part Vin2 is located at the second side 132, for pressure sensing
The input offset voltage signal of device 13；First induced signal measurement end Vout1 is located at the 3rd side 133, the second induced signal measurement end
Vout2 is located at the 4th side 134, for exporting pressure sensitivity detection signal from pressure sensor 13；
First electrode 11, positioned at pressure sensor 13 deviate from substrate 10 side, first electrode 11 on the substrate 10 hang down
The upright projection of shadow with sensor main body 130 on the substrate 10 is delivered directly at least partly to overlap；
Second electrode 12, between pressure sensor 13 and substrate 10, the vertical throwing of second electrode 12 on the substrate 10
Upright projection of the shadow with sensor main body 130 on the substrate 10 at least partly overlaps；
Wherein, first electrode 11, sensor main body 130 and second electrode 12 collectively form the light in fingerprint identification unit
Quick diode；First power supply signal input Vin1, second source signal input part Vin2, the first induced signal measurement end
Any two, which separates, among Vout1, the second induced signal measurement end Vout2, first electrode 11 and second electrode 12 is set.
Above-mentioned technical proposal is passed by setting first electrode 11 away from the side of substrate 10 in pressure sensor 13 in pressure
Second electrode 12, and the upright projection on the substrate 10 of first electrode 11 and sensor main body are set between sensor 13 and substrate 10
130 upright projection on the substrate 10 at least partly overlaps；The upright projection and sensor main of second electrode 12 on the substrate 10
The upright projection of body 130 on the substrate 10 at least partly overlaps, so that first electrode 11, the electricity of sensor main body 130 and second
Pole 12 collectively forms the photodiode in fingerprint identification unit.The essence so set is by pressure sensor 13 and to refer to
Photodiode in line recognition unit becomes one, it is not necessary to sets pressure sensor 13 and fingerprint identification unit respectively
In photodiode, the face of array base palte that pressure sensor 13 and fingerprint identification unit need to occupy that makes can be reduced
Product, it is larger to solve the area of array base palte in existing array base palte occupied by pressure sensor and fingerprint identification unit,
The problem of set location and function for other components on array base palte etc. have a great influence, realize reduction pressure sensing
The area of array base palte occupied by device and fingerprint identification unit, reduce the set location of other components in its array substrate
And the purpose of the influence of function etc..
Fig. 2 is the equivalent circuit diagram of pressure sensor in Fig. 1 a.Referring to Fig. 1 a and Fig. 2, the sensor main body 130 can wait
Imitate as a Wheatstone bridge, the Wheatstone bridge includes four equivalent resistances, respectively equivalent resistance Ra, equivalent resistance Rb,
Equivalent resistance Rc and equivalent resistance Rd, wherein second source signal input part Vin2 and the second induced signal measurement end Vout2 it
Between region be equivalent resistance Ra, the area between second source signal input part Vin2 and the first induced signal measurement end Vout1
Region of the domain between equivalent resistance Rb, the first power supply signal input Vin1 and the second induced signal measurement end Vout2 for etc.
The region imitated between resistance Rd, the first power supply signal input Vin1 and the first induced signal measurement end Vout1 is equivalent resistance
Rc.When to the first power supply signal input Vin1 and second source signal input part Vin2 input offset voltage signals, Hui Si
Each branch road has electric current to pass through in energization bridge.Now, pressing is when including the display panel of the array base palte, pressure sensor 13 because
By on display panel corresponding opening position shearing force acted on, it is its internal equivalent resistance Ra, equivalent resistance Rb, equivalent
At least one impedance changes in resistance Rc and equivalent resistance Rd, so that the first induced signal of pressure sensor 13
Pressure sensor 13 when the pressure sensitivity detection signal of measurement end Vout1 and the second induced signal measurement end Vout2 outputs is with without pressing
The first induced signal measurement end Vout1 and the second induced signal measurement end Vout2 outputs pressure sensitivity detection signal it is different, according to
This, it may be determined that the size of touch-control pressure.
Because photodiode has light sensitive characteristic.Reversely electricity is accessed for its two electrode (i.e. first electrode and second electrode)
Pressure, when by illumination, the reverse leakage current of photodiode greatly increases, and forms photoelectric current, photoelectric current is with incident intensity
Change and change.It is corresponding with fingerprint identification unit when carrying out fingerprint recognition, including in the display panel of the array base palte
The light that light source is sent, which is irradiated to, to be touched in main body (such as finger), reflects to form reflected light through touching main body, the reflection formed
In light (i.e. fingerprint signal light) irradiation fingerprint identification unit, the photodiode in fingerprint identification unit is to light incident thereon
Signal is acquired.Specific lines be present on main body (such as finger) due to touching so that touch main body (such as finger) everybody
Put the light letter that the intensity for the reflected light that place is formed is different, finally causes the photodiode in each fingerprint identification unit to be collected
Number difference, can determine user real identification accordingly.
In the above-mentioned technical solutions, alternatively, the material of sensor main body 130 is amorphous silicon material or polycrystalline silicon material；
Sensor main body 130 includes p-type doped layer 1301, intrinsic layer 1302 and the n-type doping layer 1303 being stacked.
Fig. 3 a are the structural representation of another array base palte provided in an embodiment of the present invention.Alternatively, should referring to Fig. 3 a
In array base palte, p-type doped layer 1301 is between intrinsic layer 1302 and first electrode 11, and n-type doping layer 1303 is positioned at intrinsic
Between layer 1302 and second electrode 12.Now, first electrode 11 is the anode of the photodiode, and second electrode 12 is photosensitive for this
The negative electrode of diode.
Fig. 3 b are the structural representation of another array base palte provided in an embodiment of the present invention.Alternatively, referring to Fig. 3 b, go back
It can set, for n-type doping layer 1303 between intrinsic layer 1302 and first electrode 11, p-type doped layer 1301 is located at intrinsic layer
Between 1302 and second electrode 12.Now, second electrode 12 be the photodiode anode, first electrode 11 for this photosensitive two
The negative electrode of pole pipe.
Consider from pressure sensor angle, compared to other materials (such as metal), the gage factor of semi-conducting material
It is higher, set the material of sensor main body 130 to be advantageous to improve the spirit of pressure sensor for amorphous silicon material or polycrystalline silicon material
Sensitivity.Consider from photodiode angle, set sensor main body 130 to include p-type doped layer 1301, the intrinsic layer being stacked
1302 and n-type doping layer 1303, substantially refer to the photodiode that the photodiode is arranged to PIN junction type.Compare
In the photodiode of PN junction, the photodiode potential barrier thickness of PIN junction type is very big, can absorb substantial amounts of photon and turn
Carrier is changed to, there is higher luminous sensitivity.
In above-mentioned technical method, first electrode 11 and/or second electrode 12 may be used as the photosensitive of fingerprint identification unit
Face, to be acquired to fingerprint signal light incident thereon.Alternatively, the electrode of the photosurface as fingerprint identification unit
Material can be tin indium oxide.
Fig. 4 a are the structural representation of another array base palte provided in an embodiment of the present invention, and Fig. 4 b are the second electricity in Fig. 4 a
The structural representation of pole.Referring to Fig. 4 a and Fig. 4 b, in the array base palte, first electrode 11 includes the of multiple settings that are separated
One sub-electrode block 111, second electrode 12 include the second sub-electrode block 121 of multiple settings that are separated.
Fig. 5 is the structural representation of another array base palte provided in an embodiment of the present invention, referring to Fig. 5, the array base palte
In, set only second electrode to include the second sub-electrode block 121 of multiple settings that are separated, and be not divided into first electrode 11
First sub-electrode block of multiple settings that are separated.
Similarly, it can also set in the array base palte, set only first electrode to include the of multiple settings that are separated
One sub-electrode block, the second sub-electrode block without second electrode to be divided into multiple settings that are separated.
Because pressure sensor 13 can be changed this basic thing based on the resistance of sensor main body 130 before and after pressing
It is real, come a kind of component detected to touch-control pressure.It will be understood by those skilled in the art that during pressure detecting,
It is necessary to ensure that electric signal fully transmits in the inside of sensor main body 130, can causes pressure sensor that there is good touch-control
Pressure detecting effect.
Because the first electrode and second electrode of photodiode are made using the good material of electric conductivity more, by conduction
After first electrode (or second electrode) of good performance is attached at sensor main body, can cause with the first electrode (or second electricity
Pole) between the regional area of sensor main body 130 that contacts there is short circuit phenomenon, be unfavorable for electric signal in sensor main body 130
Internal fully transmission.First electrode 11 is divided into the first son electricity of multiple settings that are separated by setting by above-mentioned technical proposal
Pole block, and/or second electrode 12 is divided into the second sub-electrode block of multiple settings that are separated, substantially reduce in pressure
Detection-phase, the possibility that electric signal transmits in first electrode 11 and second electrode 12, and then improve pressure sensor 13
Touch-control pressure detecting effect.
In addition, surveyed for the first power supply signal input Vin1, second source signal input part Vin2, the first induced signal
Upright projection on substrate of end Vout1 or the second induced signal measurement end Vout2 is measured to be located at and (or the second electricity of first electrode 11
Pole 12) upright projection on substrate situation about at least partly overlapping, alternatively, set the first power supply signal input Vin1,
Second source signal input part Vin2, the first induced signal measurement end Vout1 or the second induced signal measurement end Vout2 are in substrate
Upright projection on 10 is located on the first different sub-electrode blocks 111 (or second different sub-electrode blocks 121).
It should be noted that in Fig. 4 a, first electrode 11 is divided into the first sub-electrode block of four settings that are separated,
After second electrode 12 to be divided into the second sub-electrode block of four settings that are separated simultaneously, the sensor main body corresponds to four altogether
Photodiode.Optional when carrying out fingerprint recognition, four photodiodes are opened to carry out fingerprint recognition, Huo Zhesi successively
Individual photodiode is opened to carry out fingerprint recognition simultaneously.
Fig. 6 a are the structural representation of another array base palte provided in an embodiment of the present invention, and Fig. 6 b are the B1- along Fig. 6 a
B2 cross-sectional view.Referring to Fig. 6 a and Fig. 6 b, the array base palte includes viewing area 21, and viewing area 21 includes multiple arrays
The luminescence unit 22 of arrangement, pressure sensor 13 are located between two luminescence units 22 adjacent in viewing area 11.
In existing display device, fingerprint identification unit is arranged at display device away from the side of light emission side more, or
At HOME keys in non-display area, user, which needs specially to touch ad-hoc location, can carry out fingerprint recognition, to reach identity knowledge
Other purpose.Compared with existing display device, it is luminous single that pressure sensor 13 is arranged at adjacent in viewing area 11 two
Between member 22, viewing area 11 is arranged on equivalent to by photo-sensitive cell in fingerprint identification unit, user is touching the icon of viewing area
When can reach the function that user identity is identified simultaneously, improve Consumer's Experience.And pressure sensor 13 is set
Between luminescence unit 22 adjacent in viewing area 11, pressure sensor 13 can be avoided to the display surface including the array base palte
The aperture opening ratio of plate impacts, and reduces the area of the non-display area of display panel, consistent with the development trend of narrow frame.
On the basis of above-mentioned technical proposal, alternatively, with continued reference to Fig. 6 b, luminescence unit 22 is multiplexed with fingerprint recognition light
Source, such as when the array base palte is the array base palte of organic electroluminescence display panel, luminescence unit 22 can be organic light emitting display
Unit；The light that luminescence unit 22 is sent is incided on photodiode via formation reflected light after main body 40 reflects is touched, with
Carry out fingerprint recognition.In this way, extra fingerprint recognition light source need not be set for fingerprint identification unit, array base palte is reduced
Thickness, reduce the production cost of array base palte.
Fig. 7 is the structural representation of another array base palte provided in an embodiment of the present invention, referring to Fig. 7, the array base palte
Non-display area 23 including viewing area 21 and around viewing area 21, pressure sensor 13 are located in non-display area 23.In this way,
The electric signal that can avoid transmitting in the pressure sensor 13 and the connecting wire being connected with the pressure sensor 13 is to display
The working condition of other components in area 21 impacts.
With continued reference to Fig. 7, alternatively, the non-display area 23 of array base palte also includes the shift register VSR of multiple cascades；
Pressure sensor 13 is between two neighboring shift register VSR.
On the basis of above-mentioned technical proposal, alternatively, array base palte can also include fingerprint recognition light source, fingerprint recognition
The light that light source is sent is incided on photodiode via formation reflected light after touching main body reflection, to carry out fingerprint recognition.
Further, when carrying out touch control operation in order to avoid the array base palte that provides the application, fingerprint identification unit and
Pressure sensor works simultaneously, and the photodiode and pressure sensor for forming fingerprint identification unit integrate, each other phase
Mutually interference, alternatively, fingerprint identification unit and pressure sensor time-sharing work are set, i.e. the touch-control stage of array base palte includes pressure
Power detection-phase and fingerprint recognition stage；In the pressure detecting stage, pressure sensor is in opening, fingerprint identification unit
It is closed；In the fingerprint recognition stage, fingerprint identification unit is in opening, and pressure sensor is closed.
Fig. 8 is the structural representation of another array base palte provided in an embodiment of the present invention, referring to Fig. 8, the array base palte
Including at least one first controlling switch 14 and at least one second controlling switch 15；First controlling switch 14 and fingerprint recognition list
The first electrode 11 or second electrode 12 of member electrically connect, to control fingerprint identification unit to be in the working condition being turned on and off；
Second controlling switch 15 and the first power supply signal input Vin1 or second source signal input part Vin2 of pressure sensor 13
Electrical connection, the working condition being turned on and off is in control pressure sensor 13.So as needed fingerprint can be controlled to know
The working condition of other unit, and the working condition of control pressure sensor as needed, are advantageous to set fingerprint identification unit
With pressure sensor time-sharing work.
With continued reference to Fig. 8, the array base palte can also include control chip 20, at least one the first signal input lines 171
With at least one secondary signal input line 172；Second controlling switch 15 includes the second control terminal 151, the second input 152 and the
Two output ends 153；Second control terminal 151 of the second controlling switch 15 electrically connects with control chip 20, for controlling the second control
Switch 15 is turned on or off；Second input 152 of the second controlling switch 15 electrically connects with the first signal input line 171；The
Second output end 153 of two controlling switches 15 electrically connects with the first power supply signal input Vin1；Or second controlling switch 15
The second input 152 electrically connected with secondary signal input line 172；Second output end 153 and second of the second controlling switch 15
Power supply signal input Vin2 is electrically connected.So it is provided with beneficial to the working condition for controlling the pressure sensor as needed,
Possibility is provided for fingerprint identification unit and pressure sensor time-sharing work.
In actual setting, the concrete structure of fingerprint identification unit can have a variety of.The fingerprint identification unit of different structure,
Its operation principle is slightly different, and the set location of the first controlling switch 14 equally also slightly has difference.Typical case is carried out below
Describe in detail, in order to more facilitate, clearly subsequent schedule is described, the sun using first electrode as the photodiode
Pole, second electrode are the negative electrode of the photodiode.The description below is not admitted to limitation of the present invention.
Fig. 9 is the fundamental diagram that a kind of fingerprint identification unit provided in an embodiment of the present invention carries out fingerprint recognition.Figure 10
For a kind of electrical block diagram of fingerprint identification unit provided in an embodiment of the present invention.Referring to Fig. 9 and Figure 10, the fingerprint recognition
Unit only includes the photodiode D and fingerprint collectively formed by first electrode 11, sensor main body 130 and second electrode 12
Identify light source 16.Photodiode D first electrode 11 and second electrode 12 access backward voltage.Specifically, this photosensitive two
Level pipe D first electrode 11 accesses low voltage signal V-, and photodiode D second electrode 12 accesses high voltage signal V+.
Touched when the light that fingerprint recognition light source 16 is sent is irradiated in main body, reflect to form reflected light through touching main body, formed
Reflected light is incided on photodiode D, forms photoelectric current so that the current value in loop occurs where photodiode D
Change.Pass through the current value in loop where detecting photodiode D, it may be determined that photoelectric current size.
With continued reference to Fig. 9, due to the ridge 41 being pressed against in the touch main body 40 (such as finger) of display panel and include the battle array
The panel surface contact of row substrate, paddy 42 do not contact with the panel surface, cause light to be irradiated to and touch main body 40
Paddy 42 and reflectivity on ridge 41 it is different, and then the opening position in ridge 41 for causing fingerprint identification unit to receive formed it is anti-
Penetrate light and different in the intensity of reflected light that is formed of opening position of paddy 42 so that by the reflected light that is formed in the opening position of ridge 41 with
It is of different sizes in the photoelectric current that the reflected light that the opening position of paddy 42 is formed is converted into.Fingerprint knowledge can be carried out according to photoelectric current size
Not.
Figure 11 is the electrical block diagram of another fingerprint identification unit provided in an embodiment of the present invention.Alternatively, such as
Shown in Figure 11, array base palte also includes control chip 20；First controlling switch 14 includes the first control terminal 141, first input end
142 and second output end 143；First control terminal 141 of the first controlling switch 14 is connected with control chip 20, for controlling the
One controlling switch 141 is turned on or off；First electricity of the first input end 142 of the first controlling switch 14 and photodiode D
Pole electrically connects, the first output end 143 access low voltage signal V- of the first controlling switch 14.So it is provided with beneficial to as needed
The working condition of the fingerprint identification unit is controlled, possibility is provided for fingerprint identification unit and pressure sensor time-sharing work.
Figure 12 is the electrical block diagram of another fingerprint identification unit provided in an embodiment of the present invention.With Figure 11 phases
Than the set location of the first controlling switch 14 is different in Figure 12.Specifically, the first input end 142 of the first controlling switch 14 with
Photodiode D second electrode electrical connection, the first output end 143 access high voltage signal V+ of the first controlling switch 14.This
Sample is provided with beneficial to the working condition for controlling the fingerprint identification unit as needed, is fingerprint identification unit and pressure sensor point
When work provide possibility.
Figure 13 is the electrical block diagram of another fingerprint identification unit provided in an embodiment of the present invention.Optionally, join
See Fig. 9 and Figure 13, the fingerprint identification unit is removed including common by first electrode 11, sensor main body 130 and second electrode 12
Outside the photodiode D and fingerprint recognition light source 16 of composition, in addition to thin film transistor (TFT) T and storage capacitance C；Storage capacitance C
Including the first pole plate C1 and the second pole plate C2；First electrode electrically connects with storage capacitance C the first pole plate C1, and second electrode is with depositing
Storing up electricity holds C the second pole plate C2 and thin film transistor (TFT) T output end electrical connection；Thin film transistor (TFT) T control terminal and control electricity
Road Gate is electrically connected, and thin film transistor (TFT) T input electrically connects with signal wire Data.
In the fingerprint recognition stage, node H1 inputs low voltage signal (such as constant voltage signal that size is -5V), signal
Line Data high input voltages signal (such as constant voltage signal that size is 1.5V).The whole fingerprint recognition stage includes preparing rank
Section, fingerprint signal acquisition phase and fingerprint signal detection-phase.In the preparatory stage, the driving chip of fingerprint identification unit electrical connection
(Figure 10 and Figure 13 not shown in) passes through the thin film transistor (TFT) T conductings that thread switching control Gate controls fingerprint identification unit, storage
Electric capacity C charges, until storage capacitance C charging completes.In fingerprint signal acquisition phase, known using control circuit Gate control fingerprints
The thin film transistor (TFT) T of other unit is closed.When finger is pressed against on the display panel including the array base palte by user, fingerprint recognition
The light irradiation that light source is sent reflects to form reflected light on finger on the surface of finger print.Reflected to form through finger print
Reflected light incide in fingerprint identification unit, received by the photodiode D of fingerprint identification unit, and form photoelectric current, should
The direction of photoelectric current is to point to node H1 by node H2, and then node H2 current potential is changed.Detected in fingerprint signal
Stage, can directly detection node H2 potential change amount, and then determine the size of photoelectric current.
Alternatively, in fingerprint signal detection-phase, the thin of control circuit Gate control fingerprint identification units can also be utilized
Film transistor T is opened, and potential difference between storage capacitance C two-plates now be present, storage capacitance C is in charged state, passes through inspection
The quantity of electric charge that storage capacitance C is filled with is surveyed, and then determines the size of photoelectric current.
Figure 14 is the electrical block diagram of another fingerprint identification unit provided in an embodiment of the present invention.Alternatively, such as
Shown in Figure 14, array base palte also includes control chip 20；First controlling switch 14 includes the first control terminal 141, first input end
142 and first output end 143；First control terminal 141 of the first controlling switch 14 is connected with control chip 20, for controlling the
One controlling switch 141 is turned on or off；First electricity of the first input end 142 of the first controlling switch 14 and photodiode D
Pole electrically connects, and the first output end 143 of the first controlling switch 14 electrically connects with storage capacitance C the first pole plate C1.So set
Be advantageous to control the working condition of the fingerprint identification unit as needed, be fingerprint identification unit and pressure sensor time-sharing work
Provide possibility.
Figure 15 is the electrical block diagram of another fingerprint identification unit provided in an embodiment of the present invention.With Figure 14 phases
Than the set location of the first controlling switch 14 is different in Figure 15.Specifically, the first input end 142 of the first controlling switch 14 with
Photodiode D second electrode electrical connection, the second output end 143 and storage capacitance C of the first controlling switch 14 the second pole
Plate C2 and thin film transistor (TFT) T input electrically connect.So it is provided with and is beneficial to control the fingerprint identification unit as needed
Working condition, possibility is provided for fingerprint identification unit and pressure sensor time-sharing work.
Based on same inventive concept, the embodiment of the present invention also provides a kind of display panel.Figure 16 is the embodiment of the present invention
A kind of structural representation of the display panel provided.Referring to Figure 16, the display panel includes provided in an embodiment of the present invention any
A kind of array base palte 100.The display panel can also include the counter substrate 200 opposed with the array base palte 100.The display surface
Plate can be liquid crystal display panel, or organic electroluminescence display panel, or other kinds of display panel.If the display
Panel is liquid crystal display panel, and the counter substrate 200 can be color membrane substrates.If the display panel is organic light emitting display face
Plate, the counter substrate 200 can be cover plate.
Display panel provided in an embodiment of the present invention away from the side of substrate 10 in pressure sensor 13 by setting first
Electrode 11, second electrode 12, and on the substrate 10 vertical of first electrode 11 are set between pressure sensor 13 and substrate 10
The upright projection with sensor main body 130 on the substrate 10 is projected at least partly to overlap；Second electrode 12 on the substrate 10 hang down
Deliver directly the upright projection of shadow with sensor main body 130 on the substrate 10 at least partly to overlap, so that first electrode 11, sensor main
Body 130 and second electrode 12 collectively form the photodiode in fingerprint identification unit.The essence so set is, by pressure
Photodiode in sensor 13 and fingerprint identification unit becomes one, it is not necessary to respectively set pressure sensor 13 with
And the photodiode in fingerprint identification unit, can reduce making pressure sensor 13 and fingerprint identification unit needs what is occupied
The area of array base palte, solves the array base palte occupied by pressure sensor and fingerprint identification unit in existing array base palte
Area it is larger, the problem of set location and function for other components on array base palte etc. have a great influence, realize
The area of array base palte occupied by reduction pressure sensor and fingerprint identification unit, reduces other yuan of device in its array substrate
The purpose of the influence of the set location and function of part etc..
Pay attention to, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust, be combined with each other and substitute without departing from protection scope of the present invention.Therefore, although by above example to this
Invention is described in further detail, but the present invention is not limited only to above example, is not departing from present inventive concept
In the case of, other more equivalent embodiments can also be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (14)
- A kind of 1. array base palte, it is characterised in that including：Substrate；Pressure sensor on the substrate is formed, it is defeated that the pressure sensor includes sensor main body, the first power supply signal Enter end, second source signal input part, the first induced signal measurement end and the second induced signal measurement end；The sensor main body For semi-conducting material；The sensor main body is the polygonized structure for including at least four sides, including disjunct first side and Second side, and the disjunct 3rd while and when the 4th, first power supply signal input is located at first side, described Two power supply signal inputs are located at second side, for the pressure sensor input offset voltage signal；Described first Induced signal measurement end is located at the 3rd side, and the second induced signal measurement end is located at the 4th side, for from described Pressure sensor exports pressure sensitivity detection signal；First electrode, the side of the substrate is deviated from positioned at the pressure sensor, the first electrode is on the substrate Upright projection of the upright projection with the sensor main body on the substrate at least partly overlaps；Second electrode, between the pressure sensor and the substrate, the second electrode on the substrate vertical The upright projection with the sensor main body on the substrate is projected at least partly to overlap；Wherein, the first electrode, the sensor main body and the second electrode are collectively formed in fingerprint identification unit Photodiode；First power supply signal input, the second source signal input part, first induced signal measurement Any two, which separates, among end, the second induced signal measurement end, the first electrode and the second electrode is set.
- 2. array base palte according to claim 1, it is characterised in thatThe material of the sensor main body is amorphous silicon material or polycrystalline silicon material；The sensor main body includes p-type doped layer, intrinsic layer and the n-type doping layer being stacked.
- 3. array base palte according to claim 1, it is characterised in thatThe first electrode includes multiple the first sub-electrode blocks for separating and setting；And/orThe second electrode includes multiple the second sub-electrode blocks for separating and setting.
- 4. array base palte according to claim 1, it is characterised in that the array base palte includes viewing area, the display Area includes the luminescence unit of multiple array arrangements, and it is described luminous that the pressure sensor is located at adjacent in the viewing area two Between unit.
- 5. array base palte according to claim 4, it is characterised in thatThe luminescence unit is multiplexed with fingerprint recognition light source；The light that the luminescence unit is sent is incided on the photodiode via formation reflected light after touching main body reflection, To carry out fingerprint recognition.
- 6. array base palte according to claim 1, it is characterised in that the array base palte includes viewing area and around described The non-display area of viewing area, the pressure sensor are located in the non-display area.
- 7. array base palte according to claim 6, it is characterised in thatThe non-display area of the array base palte also includes the shift register of multiple cascades；The pressure sensor is between the two neighboring shift register.
- 8. array base palte according to claim 1, it is characterised in that also including fingerprint recognition light source,The light that the fingerprint recognition light source is sent incides photosensitive two pole via formation reflected light after touching main body reflection Guan Shang, to carry out fingerprint recognition.
- 9. array base palte according to claim 1, it is characterised in that the touch-control stage of the array base palte is examined including pressure Survey stage and fingerprint recognition stage；In the pressure detecting stage, the pressure sensor is in opening, and the fingerprint identification unit, which is in, closes shape State；In the fingerprint recognition stage, the fingerprint identification unit is in opening, and the pressure sensor, which is in, closes shape State.
- 10. array base palte according to claim 1, it is characterised in that the array base palte includes at least one first control System switch and at least one second controlling switch；First controlling switch electrically connects with the first electrode of the fingerprint identification unit or the second electrode, with control Make the fingerprint identification unit and be in the working condition being turned on and off；Second controlling switch is believed with first power supply signal input of the pressure sensor or the second source Number input electrical connection, to control the pressure sensor to be in the working condition being turned on and off.
- 11. array base palte according to claim 10, it is characterised in that the fingerprint identification unit also includes film crystal Pipe and storage capacitance；The storage capacitance includes the first pole plate and the second pole plate；The first electrode electrically connects with the first pole plate of the storage capacitance, and the of the second electrode and the storage capacitance The output end of two pole plates and the thin film transistor (TFT) electrically connects；The control terminal of the thin film transistor (TFT) is electrically connected with control circuit Connect, the input of the thin film transistor (TFT) electrically connects with signal wire.
- 12. array base palte according to claim 11, it is characterised in that the array base palte also includes control chip；First controlling switch includes the first control terminal, first input end and the first output end；First control terminal of first controlling switch is connected with the control chip, for controlling first control Switch is turned on or off；The first input end of first controlling switch electrically connects with the first electrode of the photodiode, and described first First output end of controlling switch electrically connects with the first pole plate of the storage capacitance；OrThe first input end of first controlling switch electrically connects with the second electrode of the photodiode, and described first First output end of controlling switch and the input of the second pole plate of the storage capacitance and thin film transistor (TFT) electricity Connection.
- 13. array base palte according to claim 10, it is characterised in that the array base palte also includes control chip, extremely Few first signal input line and at least one secondary signal input line；Second controlling switch includes the second control terminal, the second input and the second output end；Second control terminal of second controlling switch electrically connects with the control chip, for controlling second control Switch is turned on or off；Second input of second controlling switch electrically connects with first signal input line；Second control is opened Second output end closed electrically connects with first power supply signal input；OrSecond input of second controlling switch electrically connects with the secondary signal input line；Second control is opened Second output end closed electrically connects with the second source signal input part.
- 14. a kind of display panel, it is characterised in that including the array base palte any one of claim 1-13.
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| CN201710736746.2A CN107422920B (en) | 2017-08-24 | 2017-08-24 | Array substrate and display panel |
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| CN201710736746.2A CN107422920B (en) | 2017-08-24 | 2017-08-24 | Array substrate and display panel |
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| CN108090467A (en) * | 2017-12-30 | 2018-05-29 | 深圳信炜科技有限公司 | Photosensitive device, photosensitive module, display module and electronic equipment |
| CN108155222A (en) * | 2018-01-31 | 2018-06-12 | 厦门凌阳华芯科技有限公司 | A kind of organic electroluminescence display device and method of manufacturing same |
| CN108646483A (en) * | 2018-04-26 | 2018-10-12 | 上海中航光电子有限公司 | Array substrate, display panel and display device |
| CN108764081A (en) * | 2018-05-17 | 2018-11-06 | 上海天马有机发光显示技术有限公司 | A kind of display panel and display device |
| CN108988121A (en) * | 2018-07-25 | 2018-12-11 | 北京小米移动软件有限公司 | Optical devices and equipment |
| CN109358706A (en) * | 2018-10-30 | 2019-02-19 | 厦门天马微电子有限公司 | Display panel and display device |
| CN109739379A (en) * | 2018-12-27 | 2019-05-10 | 厦门天马微电子有限公司 | Display panel and its driving method, display device |
| CN110536082A (en) * | 2019-08-30 | 2019-12-03 | 上海中航光电子有限公司 | Active pixel sensing circuit structure and sensor, display panel and device |
| CN112906496A (en) * | 2021-01-28 | 2021-06-04 | 湖北长江新型显示产业创新中心有限公司 | Fingerprint identification circuit, fingerprint identification method and display device |
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| CN108090467A (en) * | 2017-12-30 | 2018-05-29 | 深圳信炜科技有限公司 | Photosensitive device, photosensitive module, display module and electronic equipment |
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| CN108646483A (en) * | 2018-04-26 | 2018-10-12 | 上海中航光电子有限公司 | Array substrate, display panel and display device |
| CN108646483B (en) * | 2018-04-26 | 2021-08-24 | 上海中航光电子有限公司 | Array substrate, display panel and display device |
| CN108764081A (en) * | 2018-05-17 | 2018-11-06 | 上海天马有机发光显示技术有限公司 | A kind of display panel and display device |
| CN108764081B (en) * | 2018-05-17 | 2021-03-16 | 上海天马有机发光显示技术有限公司 | Display panel and display device |
| CN108988121A (en) * | 2018-07-25 | 2018-12-11 | 北京小米移动软件有限公司 | Optical devices and equipment |
| CN108988121B (en) * | 2018-07-25 | 2020-01-07 | 北京小米移动软件有限公司 | Optical device and apparatus |
| CN109358706B (en) * | 2018-10-30 | 2021-09-28 | 厦门天马微电子有限公司 | Display panel and display device |
| CN109358706A (en) * | 2018-10-30 | 2019-02-19 | 厦门天马微电子有限公司 | Display panel and display device |
| CN109739379A (en) * | 2018-12-27 | 2019-05-10 | 厦门天马微电子有限公司 | Display panel and its driving method, display device |
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| CN110536082A (en) * | 2019-08-30 | 2019-12-03 | 上海中航光电子有限公司 | Active pixel sensing circuit structure and sensor, display panel and device |
| CN110536082B (en) * | 2019-08-30 | 2021-11-02 | 上海中航光电子有限公司 | Active pixel sensing circuit, active pixel sensing sensor, display panel and device |
| CN112906496A (en) * | 2021-01-28 | 2021-06-04 | 湖北长江新型显示产业创新中心有限公司 | Fingerprint identification circuit, fingerprint identification method and display device |
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