CN108735790A - Display panel, display device and pixel driving method - Google Patents
Display panel, display device and pixel driving method Download PDFInfo
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- CN108735790A CN108735790A CN201810542635.2A CN201810542635A CN108735790A CN 108735790 A CN108735790 A CN 108735790A CN 201810542635 A CN201810542635 A CN 201810542635A CN 108735790 A CN108735790 A CN 108735790A
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000000758 substrate Substances 0.000 claims abstract description 33
- 238000009739 binding Methods 0.000 claims abstract description 29
- 230000027455 binding Effects 0.000 claims abstract description 29
- 238000003860 storage Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 9
- 230000006698 induction Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 230000012447 hatching Effects 0.000 description 4
- 238000002834 transmittance Methods 0.000 description 3
- 230000001186 cumulative effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
- G09G3/3233—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
- H10K59/1216—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being capacitors
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/40—OLEDs integrated with touch screens
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Geometry (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Control Of El Displays (AREA)
Abstract
The invention discloses a display panel, a display device and a pixel driving method, wherein the display panel, the display device and the pixel driving method comprise the following steps: a display area and a non-display area; a substrate base plate; a sub-pixel unit; the vertical projection of the fingerprint identification unit on the substrate base plate is positioned in the display area; the non-display area comprises a binding area; the display area further comprises a first pixel area and a second pixel area, and the second pixel area is positioned between the first pixel area and the binding area; the pixel opening area of the first sub-pixel unit in the first pixel area is larger than that of the second sub-pixel unit in the second pixel area; the sub-pixel unit comprises a pixel driving circuit and an organic light emitting device; the resistance from the first power supply voltage terminal to the anode in the pixel driving circuit in the first sub-pixel unit is smaller than the resistance from the first power supply voltage terminal to the anode in the pixel driving circuit in the second sub-pixel unit. The brightness of the display panel is more uniform by adjusting the resistance from the first power supply voltage end to the anode in each sub-pixel unit in the display panel.
Description
Technical field
The present invention relates to display technology fields, more particularly, to a kind of display panel, display device and pixel driver side
Method.
Background technology
Fingerprint is all come with body for everyone, is unique.With the development of science and technology, going out in the market
A variety of display devices with fingerprint identification function, such as mobile phone, tablet computer and intelligent wearable device are showed.In this way,
User is before operating the display device with fingerprint identification function, it is only necessary to use the fingerprint recognition list of finger touch display unit
Member, so that it may to carry out Authority Verification, simplify Authority Verification process.
In order to improve the screen accounting of display panel, therefore, fingerprint identification unit is set in the viewing area of display panel
Structure is more and more.It is generally disposed at from production cost is reduced with the angle of the use habit based on user, fingerprint identification unit
Close to the one end in binding area in the viewing area of display panel.Fingerprint identification unit generates fingerprint letter according to the intensity of the light received
Number, since light is very low in the transmitance of pixel unit Anodic, so passing through the opening face of reduction pixel unit in display panel
It accumulates fingerprint identification unit is arranged.
Because the current density of pixel unit is influenced by the opening area of pixel unit.After applying identical voltage,
When identical by the electric current of pixel unit, the opening area of pixel unit is smaller, then pixel unit power generation current density is bigger, then phase
The light emission luminance for the pixel unit answered is bigger.Fingerprint recognition is set by reducing the opening area of pixel unit in display panel
Unit can cause the light emission luminance of each pixel unit in display panel different.
Invention content
In view of this, the present invention provides a kind of display panel, display device and image element driving methods.
In a first aspect, the embodiment of the present invention provides a kind of display panel, including：Viewing area and around the non-display of viewing area
Area；Underlay substrate；Multiple sub-pixel units are located at underlay substrate side, and are located at viewing area；Fingerprint identification unit is located at son
Side of the pixel unit far from light-emitting surface, fingerprint identification unit are located in the upright projection of underlay substrate in viewing area；It is non-display
Area includes binding area；Viewing area also includes at least the first pixel region and the second pixel region, the first pixel region and the second pixel region edge
First direction is arranged, and the second pixel region is located between the first pixel region and binding area；First pixel region includes the multiple first sub- pictures
Plain unit, the second pixel region include multiple second sub-pixel units；The pixel openings area of first sub-pixel unit is more than second
The pixel openings area of sub-pixel unit；Sub-pixel unit includes pixel-driving circuit and organic luminescent device；Organic illuminator
Part includes anode, cathode and the organic luminous layer being set between anode and cathode；Pixel-driving circuit includes at least the first electricity
Source voltage end and it is connected to first switch transistor and driving transistor between the first power voltage terminal and anode, first switch is brilliant
The grid connection LED control signal end of body pipe, the grid of driving transistor connect storage capacitance；Picture in first sub-pixel unit
In plain driving circuit the first power voltage terminal to the resistance between anode be R1, in the second sub-pixel first in pixel-driving circuit
Power voltage terminal to the resistance between anode be R2；Wherein, 0 < R1 < R2.
Second aspect, the embodiment of the present invention provide a kind of image element driving method, are used for display panel provided by the present application, packet
It includes：Luminous signal time of the LED control signal end to first switch transistor in pixel-driving circuit in first sub-pixel unit
For t1, in the second sub-pixel unit in pixel-driving circuit LED control signal end to first switch transistor luminous signal when
Between be t2, luminous signal of the LED control signal end to first switch transistor in pixel-driving circuit in third sub-pixel unit
Time is t3；Wherein, 0 < t1 < t2 < t3.
The third aspect, the embodiment of the present invention provide a kind of display device, including display panel, and wherein display panel is this Shen
The display panel that please be provide.
Compared with prior art, display panel provided by the invention, display device and image element driving method, at least realize
Following advantageous effect：
The pixel openings area of first sub-pixel unit is more than the pixel openings area of the second sub-pixel unit, to a certain degree
Upper alleviation display panel shows inhomogenous problem, correspondingly, the area of organic luminescent device is less than second in the first sub-pixel
The area of organic luminescent device in sub-pixel unit can by reducing the area of organic luminescent device in the second sub-pixel unit
Raising is located at the induction precision of the fingerprint identification unit in the second pixel region in the upright projection of underlay substrate.First sub-pixel list
In member the first power voltage terminal to the resistance between the anode of organic luminescent device be R1, the first power supply in the second sub-pixel unit
Voltage end to the resistance between the anode of organic luminescent device be R2, wherein 0 < R1 < R2.Then passed through in the first sub-pixel unit
The driving current for crossing organic luminescent device is more than the driving current for passing through organic luminescent device in the second sub-pixel unit, further
Improve the light emission luminance different problems of the first sub-pixel unit and the second sub-pixel unit, so that the brightness of display panel
More uniformly.
Certainly, implementing any of the products of the present invention specific needs while must not reach all the above technique effect.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Description of the drawings
It is combined in the description and the attached drawing of a part for constitution instruction shows the embodiment of the present invention, and even
With its explanation together principle for explaining the present invention.
Fig. 1 is a kind of floor map of display panel provided in an embodiment of the present invention；
Fig. 2 be in Fig. 1 display panel along the diagrammatic cross-section of hatching A-A '；
Fig. 3 is a kind of partial top structural schematic diagram of sub-pixel unit provided in an embodiment of the present invention；
Fig. 4 is a kind of pixel-driving circuit schematic diagram provided in an embodiment of the present invention；
Fig. 5 is the floor map of another display panel provided in an embodiment of the present invention；
Fig. 6 be in Fig. 5 display panel along the diagrammatic cross-section of hatching B-B '；
Fig. 7 is the vertical view of substrate in Fig. 6；
Fig. 8 is the floor map of another display panel provided in an embodiment of the present invention；
Fig. 9 is a kind of optional embodiment schematic diagram of the portions A structure in Fig. 8；
Figure 10 is another optional embodiment schematic diagram of the portions A structure in Fig. 8；
Figure 11 is the partial cutaway view of another display panel provided in an embodiment of the present invention；
Figure 12 is another pixel-driving circuit schematic diagram provided in an embodiment of the present invention；
Figure 13 is the partial cutaway view of another display panel provided in an embodiment of the present invention；
Figure 14 is the sectional view of another display panel provided in an embodiment of the present invention；
Figure 15 is a kind of front view for display device that the embodiment of the present invention is provided.
Specific implementation mode
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should be noted that：Unless in addition having
Body illustrates that the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
It is illustrative to the description only actually of at least one exemplary embodiment below, is never used as to the present invention
And its application or any restrictions that use.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
In shown here and discussion all examples, any occurrence should be construed as merely illustrative, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent attached drawing in a attached drawing.
Fig. 1 is a kind of floor map of display panel provided in an embodiment of the present invention, and Fig. 2 is display panel edge in Fig. 1
The diagrammatic cross-section of hatching A-A ', Fig. 3 are that a kind of partial top structure of sub-pixel unit provided in an embodiment of the present invention is shown
It is intended to, Fig. 4 is a kind of pixel-driving circuit schematic diagram provided in an embodiment of the present invention, and with reference to figure 1- Fig. 4, the present invention provides a kind of
Display panel, including：
Viewing area AA and non-display area NA around viewing area AA；
Underlay substrate 110；
Multiple sub-pixel units 120 are located at 110 side of underlay substrate, and are located at viewing area AA；
Fingerprint identification unit 210 is located at side of the sub-pixel unit 120 far from light-emitting surface 121, fingerprint identification unit 210
It is located in the AA of viewing area in the upright projection of underlay substrate 110；
Non-display area NA includes binding area 130；
Viewing area AA also includes at least the first pixel region 140 and the second pixel region 150, the first pixel region 140 and the second picture
Plain area 150 arranges along first direction X, and the second pixel region 150 is located between the first pixel region 140 and binding area 130；
First pixel region 140 includes multiple first sub-pixel unit 120a, and the second pixel region 150 includes the multiple second sub- pictures
Plain unit 120b；
The pixel openings area of first sub-pixel unit 120a is more than the pixel openings area of the second sub-pixel unit 120b；
Sub-pixel unit 120 includes pixel-driving circuit 122 and organic luminescent device OLED；
Organic luminescent device OLED includes anode 123 and cathode 125；
Pixel-driving circuit 122 include at least the first power voltage terminal PVDD and be connected to the first power voltage terminal PVDD and
The grid connection of first switch transistor M1 between anode 123 and driving transistor M2, first switch transistor M1, which shine, to be controlled
The grid connection storage capacitance Cst of signal end Emit processed, driving transistor M2；
In first sub-pixel unit 120a in pixel-driving circuit 122 first power voltage terminal PVDD between anode 123
Resistance be R1, in the second sub-pixel unit 120b in pixel-driving circuit 122 first power voltage terminal PVDD to anode 123 it
Between resistance be R2；Wherein, 0 < R1 < R2.
Specifically, continuing to refer to figure 1 and Fig. 2,120 corresponding region of sub-pixel unit is the luminous zone of display panel, phase
Region between adjacent two sub-pixel units 120 is the non-light-emitting area of display panel.Fingerprint identification unit 210 is located at sub-pixel
Side of the unit 120 far from light-emitting surface 121 can avoid fingerprint identification unit 210 and be blocked to the generation of sub-pixel unit 120, influenced
Image is shown.Fingerprint identification unit 210 is located in the upright projection of underlay substrate 110 in the AA of viewing area, improves display panel
Screen accounting, comply with the development trend of display panel narrow side.
Fingerprint identification unit 210 generates fingerprint signal, the sub-pixel unit of display panel according to the intensity of the light received
120 light transmittances are low, and the non-light-emitting area light transmittance of display panel is high, and the non-light-emitting area of viewing area AA is transparent area in display panel.
The area of the pixel openings area effect transparent area of sub-pixel unit 120, the opening area of sub-pixel unit 120 is bigger, then thoroughly
The area in light area is smaller.From the region close to binding area 130 to the region far from binding area 130, there are IR pressure drops in display panel
The problem of (IR drop), can cause the brightness of the sub-pixel unit 120 in the region close to binding area 130 to be more than far from binding
The brightness of the sub-pixel unit 120 in the region in area 130.It will be close to the opening face of the sub-pixel unit 120 in the region in binding area 130
Product reduces, and can reduce the brightness of the sub-pixel unit 120 in the region, be shown so as to alleviate display panel to a certain extent
Inhomogenous problem, meanwhile, fingerprint identification unit 210 can be disposed in proximity to the region in binding area 130.
The pixel openings area of first sub-pixel unit 120a is more than the in the second pixel region 150 in first pixel region 140
The pixel openings area of two sub-pixel unit 120b, this set make the area of the transparent area in the first pixel region 140 total
The accounting of area is less than accounting of the area in the gross area of transparent area in the second pixel region 150, and light is saturating in the first pixel region 140
Transmitance of the rate less than light in the second pixel region 150 is crossed, to which the upright projection in underlay substrate 110 is located at the second pixel region
The induction precision of fingerprint identification unit 210 in 150 is located at the first pixel region 140 more than the upright projection in underlay substrate 110
The induction precision of interior fingerprint identification unit 210.
With continued reference to Fig. 3 and Fig. 4, each sub-pixel unit 120 includes at least pixel-driving circuit 122 and organic illuminator
Part OLED, pixel-driving circuit 122 include at least the first power voltage terminal PVDD, first switch transistor M1, driving transistor
M2, LED control signal end Emit and storage capacitance Cst.Wherein, organic luminescent device OLED can be Organic Light Emitting Diode,
It is identified in Fig. 4 using the circuit symbol of Organic Light Emitting Diode, it is to be understood that be not intended to limit organic light emission herein
Device OLED is Organic Light Emitting Diode.
The first power voltage terminal of the first pole connection PVDD, the first power voltage terminal PVDD of driving transistor M2 is high level
Voltage, the first pole of the second pole connection first switch transistor M1 of driving transistor M2, the second of first switch transistor M1
Pole connects the anode 123 of organic luminescent device OLED, the grid connection hair of first switch transistor M1 by anode articulamentum 128
The grid connection storage capacitance Cst of optical control signal end Emit, driving transistor M2.Wherein, the moon of organic luminescent device OLED
Low level voltage PVEE can be extremely connected, is with the cathode of organic luminescent device OLED connection low level voltage PVEE in Fig. 4
Example illustrates.Driving transistor M2 is used to control shining for organic luminescent device OLED, and storage capacitance Cst is used for brilliant to drive
The grid of body pipe M2 provides maintenance voltage, and driving transistor M2, which generates driving current, makes organic luminescent device OLED shine.
The voltage that the first power voltage terminal PVDD is provided in first sub-pixel unit 120a is less than the second sub-pixel unit
The brightness of the voltage that the first power voltage terminal PVDD is provided in 120b, the first sub-pixel unit 120a is less than the second sub-pixel unit
The brightness of 120b, the opening area of the first sub-pixel unit 120a is more than the opening area of the second sub-pixel unit 120b, one
Determine to alleviate in degree the brightness different problems of the first sub-pixel unit 120a and the second sub-pixel unit 120b.
In first sub-pixel unit 120a between the anode 123 of the first power voltage terminal PVDD to organic luminescent device OLED
Resistance be R1, the anode 123 of the first power voltage terminal PVDD to organic luminescent device OLED in the second sub-pixel unit 120b
Between resistance be R2, wherein 0 < R1 < R2, the resistance of conducting wire can make a part of voltage be consumed on conducting wire, the second sub- picture
The voltage of conducting wire consumption in plain unit 120b between the anode 123 of the first power voltage terminal PVDD to organic luminescent device OLED
Leading between the anode 123 more than the first power voltage terminal PVDD to organic luminescent device OLED in the first sub-pixel unit 120a
The voltage of line consumption further improves the brightness different problems of the first sub-pixel unit 120a and the second sub-pixel unit 120b,
So that the brightness of display panel is more uniform.
It is the floor map of another display panel provided in an embodiment of the present invention with reference to figure 4 and Fig. 5, Fig. 5, it is optional
, wherein viewing area AA also includes at least third pixel region 160, the first pixel region 140, the second pixel region 150 and third pixel
Area 160 arranges along first direction X, and third pixel region 160 is located between the second pixel region 150 and binding area 130；
Third pixel region 160 includes multiple third sub-pixel unit 120c；
The pixel openings area of second sub-pixel unit 120b is less than the pixel openings area of the first sub-pixel unit 120a,
And the pixel openings area more than third sub-pixel unit 120c；
The first power voltage terminal PVDD is between anode in pixel-driving circuit 122 described in third sub-pixel unit 120c
Resistance be R3；Wherein, 0 < R1 < R2 < R3.
Specifically, with continued reference to Fig. 4 and Fig. 5, in display panel provided in an embodiment of the present invention, the first sub-pixel unit
The pixel openings area of 120a, the second sub-pixel unit 120b and third sub-pixel unit 120c gradually successively decrease, in substrate
The upright projection of substrate 110 is located at the fingerprint recognition list in the first pixel region 140, the second pixel region 150 and third pixel region 160
The induction precision of member 210 gradually increases.Correspondingly, the first sub-pixel unit 120a, the second sub-pixel unit 120b and third
The pixel openings area of pixel unit 120c is gradually reduced, and the first sub-pixel unit 120a, the second sub-pixel unit 120b and
In third sub-pixel unit 120c in pixel-driving circuit 122 first power voltage terminal PVDD to organic luminescent device OLED sun
Resistance between pole gradually increases so that the first sub-pixel unit 120a, the second sub-pixel unit 120b and third sub-pixel list
The voltage of conducting wire consumption in first 120c between the anode 123 of the first power voltage terminal PVDD to organic luminescent device OLED is gradual
Increase, further improves the hair of the first sub-pixel unit 120a, the second sub-pixel unit 120b and third sub-pixel unit 120c
Brightness different problems, so that the brightness of display panel is more uniform.
In embodiments, the first pixel region 140, the second pixel region 150 and third pixel region 160 name merely to
Illustrate that the pixel openings area of the sub-pixel unit 120 in closer binding area 130 in display panel is smaller, without to the first picture
The specific location and area in plain area 140, the second pixel region 150 and third pixel region 160 limit.
It is that display panel is known in Fig. 6 along the diagrammatic cross-section of hatching B-B ' with fingerprint in Fig. 5 with reference to figure 5- Fig. 7, Fig. 6
Other unit 210 illustrates for being set on substrate 170, is not intended to limit fingerprint identification unit 210 herein and is set to substrate 170
On, Fig. 7 is the vertical view of substrate in Fig. 6, optionally, wherein upright projection of the fingerprint identification unit 210 in underlay substrate 110
In third pixel region 160.
Specifically, with continued reference to Fig. 5-Fig. 7, in display panel provided in an embodiment of the present invention, the first sub-pixel unit
The pixel openings area of 120a, the second sub-pixel unit 120b and third sub-pixel unit 120c gradually successively decrease, in substrate
The upright projection of substrate 110 is located at the first sub-pixel unit 120a, the second sub-pixel unit 120b and third sub-pixel unit
The induction precision of fingerprint identification unit 210 in 120c gradually increases.From the region close to binding area 130 to remote in display panel
There is IR pressure drops (IR drop) in the region from binding area 130, i.e., can lead to the first sub-pixel unit 120a, the second son
The brightness of pixel unit 120b and third sub-pixel unit 120c gradually increase.First sub-pixel unit 120a, the second sub-pixel
The pixel openings area of unit 120b and third sub-pixel unit 120c gradually successively decrease, and alleviate the first sub-pixel to a certain extent
The brightness different problems of unit 120a, the second sub-pixel unit 120b and third sub-pixel unit 120c, so as to certain
Alleviate display panel in degree and shows inhomogenous problem.Meanwhile fingerprint identification unit 210 is in the vertical throwing of underlay substrate 110
Shadow is located in third pixel region 160.It is set in substrate 170 and it is understood that fingerprint identification unit 210 is not intended to limit
In three pixel regions, 160 corresponding region, the close bindings of the viewing area AA in display panel can be arranged in fingerprint identification unit 210
In 130 corresponding region of area, fingerprint identification unit 210 array substrate 110 upright projection position pixel openings area compared with
Between small sub-pixel unit 120.
With continued reference to Fig. 3 and Fig. 4, optionally, wherein pixel-driving circuit 122 further includes being connected to the first supply voltage
Hold the power cord S between PVDD, first switch transistor M1, driving transistor M2 and anode.
It is the floor map of another display panel provided in an embodiment of the present invention with reference to figure 8 and Fig. 9, Fig. 8, Fig. 9 is
A kind of optional embodiment schematic diagram of the portions A structure in Fig. 8, optionally, wherein pixel driver in the second sub-pixel unit 120b
The line width of power cord Sb is more than in the first sub-pixel unit 120a power cord Sa in pixel-driving circuit 122a in circuit 122b
Line width, and less than the line width of power cord Sc in pixel-driving circuit 122c in third sub-pixel unit 120c.
Specifically, the line width of power cord S is smaller in pixel-driving circuit 122, correspondingly, the first power voltage terminal PVDD is arrived
Resistance between the anode of organic luminescent device OLED is bigger.It is electric in the second sub-pixel unit 120b with continued reference to Fig. 8 and Fig. 9
The line width of source line Sb is more than the line width of power cord Sa in the first sub-pixel unit 120a, and less than in third sub-pixel unit 120c
The line width of power cord Sc, then correspondingly, the first sub-pixel unit 120a, the second sub-pixel unit 120b and third sub-pixel unit
Resistance in 120c in pixel-driving circuit 122 between the anode of first power voltage terminal PVDD to organic luminescent device OLED by
It is cumulative big, to the first electricity in the first sub-pixel unit 120a, the second sub-pixel unit 120b and third sub-pixel unit 120c
The voltage of conducting wire consumption between the anode 123 of source voltage end PVDD to organic luminescent device OLED gradually increases so that first
The driving of organic luminescent device OLED in sub-pixel unit 120a, the second sub-pixel unit 120b and third sub-pixel unit 120c
Electric current is gradually reduced, and further improves the first sub-pixel unit 120a, the second sub-pixel unit 120b and third sub-pixel unit
The light emission luminance different problems of 120c, so that the brightness of display panel is more uniform.
It is another optional embodiment schematic diagram of the portions A structure in Fig. 8 with reference to figure 8 and Figure 10, Figure 10, optionally,
In, the length of power cord Sb is more than the first sub-pixel unit 120a in pixel-driving circuit 122b in the second sub-pixel unit 120b
The length of power cord Sa in middle pixel-driving circuit 122a, and less than pixel-driving circuit 122c in third sub-pixel unit 120c
The length of middle power cord Sc.
Specifically, the length of power cord S is bigger in pixel-driving circuit 122, correspondingly, the first power voltage terminal PVDD is arrived
Resistance between the anode of organic luminescent device OLED is bigger.It is electric in the second sub-pixel unit 120b with continued reference to Fig. 8 and Figure 10
The length of source line Sb is more than the length of power cord Sa in the first sub-pixel unit 120a, and less than in third sub-pixel unit 120c
The length of power cord Sc, then correspondingly, the first sub-pixel unit 120a, the second sub-pixel unit 120b and third sub-pixel unit
Resistance in 120c in pixel-driving circuit 122 between the anode of first power voltage terminal PVDD to organic luminescent device OLED by
It is cumulative big, to the first electricity in the first sub-pixel unit 120a, the second sub-pixel unit 120b and third sub-pixel unit 120c
The voltage of conducting wire consumption between the anode 123 of source voltage end PVDD to organic luminescent device OLED gradually increases so that first
The driving of organic luminescent device OLED in sub-pixel unit 120a, the second sub-pixel unit 120b and third sub-pixel unit 120c
Electric current is gradually reduced, and further improves the first sub-pixel unit 120a, the second sub-pixel unit 120b and third sub-pixel unit
The light emission luminance different problems of 120c, so that the brightness of display panel is more uniform.
It is the partial cutaway view of another display panel provided in an embodiment of the present invention with reference to figure 8 and Figure 11, Figure 11, it is optional
, wherein the drain electrode M11 of first switch transistor M1 passes through the first mistake in pixel-driving circuit (being not shown in Fig. 8 and Figure 11)
126 jointed anode 123 of hole；
The aperture of the first via 126b is less than the first mistake in the first sub-pixel unit 120a in second sub-pixel unit 120b
The aperture of hole 126a, and more than the aperture of the first via 126c in third sub-pixel unit 120c.
Specifically, continuing to refer to figure 11, first switch transistor M1 includes drain electrode M11, source electrode M13 and grid M12, drain electrode
M11 and anode 123 are connected by the first via 126, with a diameter of first via 126 of the maximum cross section of the first via 126
Aperture, the aperture of the first via 126 to drain between M11 and anode 123 is smaller, then the electricity to drain between M11 and anode 123
Resistance is bigger, between the anode 123 of the first power voltage terminal (being not shown in Fig. 8 and Figure 11) to organic luminescent device OLED
Resistance is bigger.
The aperture of the first via 126a is d1 in first sub-pixel unit 120a, the first mistake in the second sub-pixel unit 120b
The aperture of hole 126b is d2, and the aperture of the first via 126c is d3 in third sub-pixel unit 120c, wherein d1 > d2 > d3 >
0, to drain electrode M11 and sun in the first sub-pixel unit 120a, the second sub-pixel unit 120b and third sub-pixel unit 120c
The resistance of pole 123 gradually increases, and first power voltage terminal is to the resistance between anode 123 in corresponding pixel-driving circuit 122
Gradually increase, to first in the first sub-pixel unit 120a, the second sub-pixel unit 120b and third sub-pixel unit 120c
The voltage of conducting wire consumption between the anode 123 of power voltage terminal PVDD to organic luminescent device OLED gradually increases so that the
The drive of organic luminescent device OLED in one sub-pixel unit 120a, the second sub-pixel unit 120b and third sub-pixel unit 120c
Streaming current is gradually reduced, and further improves the first sub-pixel unit 120a, the second sub-pixel unit 120b and third sub-pixel list
The light emission luminance different problems of first 120c, so that the brightness of display panel is more uniform.
It is another pixel-driving circuit schematic diagram provided in an embodiment of the present invention with reference to figure 8, Figure 12 and Figure 13, Figure 12,
Figure 13 is the partial cutaway view of another display panel provided in an embodiment of the present invention, optionally, wherein pixel-driving circuit
122 further include the second switch transistor M3 being connected between the first power voltage terminal PVDD and driving transistor M2, and second opens
Grid M32 the connection LED control signal end Emit, the source electrode M31 of second switch transistor M3 for closing transistor M3 pass through the second mistake
Hole 127 connects the first power voltage terminal PVDD；
The aperture of the second via 127b is less than the second mistake in the first sub-pixel unit 120a in second sub-pixel unit 120b
The aperture of hole 127a, and more than the aperture of the second via 127c in third sub-pixel unit 120c.
Specifically, with continued reference to Fig. 8, Figure 12 and Figure 13, third switching transistor M3 includes drain electrode M31, source electrode M33 and grid
Pole M32, grid M32 are connected with LED control signal end Emit, and source electrode M33 and the first power voltage terminal PVDD pass through the second via
127 connections, with the aperture of a diameter of second via 127 of the maximum cross section of the second via 127, source electrode M33 and the first power supply
The aperture of the second via 127 between voltage end PVDD is smaller, then the resistance between source electrode M33 and the first power voltage terminal PVDD
It is bigger, to which the resistance between the anode of the first power voltage terminal PVDD to organic luminescent device OLED is bigger.
The aperture of the second via 127a is D1 in first sub-pixel unit 120a, the second mistake in the second sub-pixel unit 120b
The aperture of hole 127b is D2, and the aperture of the second via 127c is D3 in third sub-pixel unit 120c, wherein D1 > D2 > D3 >
0, to source electrode M33 in the first sub-pixel unit 120a, the second sub-pixel unit 120b and third sub-pixel unit 120c and the
The resistance of one power voltage terminal PVDD gradually increases, and first power voltage terminal PVDD is to having in corresponding pixel-driving circuit 122
Resistance between the anode of machine luminescent device OLED gradually increases, to the first sub-pixel unit 120a, the second sub-pixel unit
In 120b and third sub-pixel unit 120c between the anode 123 of the first power voltage terminal PVDD to organic luminescent device OLED
The voltage of conducting wire consumption gradually increases so that the first sub-pixel unit 120a, the second sub-pixel unit 120b and third sub-pixel
The driving current of organic luminescent device OLED is gradually reduced in unit 120c, further improves the first sub-pixel unit 120a, the
The light emission luminance different problems of two sub-pixel unit 120b and third sub-pixel unit 120c, so that display panel is bright
Degree is more uniform.
With continued reference to Fig. 8 and Figure 11, optionally, wherein organic luminescent device OLED includes anode in sub-pixel unit 120
123, the area of organic luminous layer 124 and cathode 125, the second sub-pixel unit 120b Anodics 123b is less than the first sub-pixel list
The area of first 120a Anodics 123a, and the area more than third sub-pixel unit 120c Anodics 123c.
Specifically, with continued reference to Fig. 8 and Figure 11, organic luminescent device OLED includes anode 123,124 and of organic luminous layer
Cathode 125, the light transmittance of anode 123 is close to 0, the area of transparent area, anode 123 in the area effect display panel of anode 123
Area it is bigger, then the area of transparent area is smaller in display panel.
First sub-pixel unit 120a, the second sub-pixel unit 120b and third sub-pixel unit 120c Anodics 123c's
Area is gradually reduced, and this set makes respective in the first pixel region 140, the second pixel region 150 and third pixel region 160
The area of transparent area gradually increases in the accounting of the respective gross area, the first pixel region 140, the second pixel region 150 and third picture
The transmitance of light gradually increases in plain area 160, to which the upright projection in underlay substrate 110 is located at the first pixel region 140, second
The induction precision of fingerprint identification unit 210 in pixel region 150 and third pixel region 160 gradually increases.
With continued reference to Fig. 8 and Figure 11, optionally, wherein further include pixel defining layer 180, pixel defining layer 180 is set to
Between anode 123 and cathode 125, there is pixel defining layer 180 opening, organic luminous layer 124 to be set in opening；
The area of second sub-pixel unit 120b split sheds is less than the area of the first sub-pixel unit 120a split sheds, and big
In the area of third sub-pixel unit 120c split sheds.
Specifically, with continued reference to Fig. 8 and Figure 11, there is pixel defining layer 180 opening, organic luminous layer 124 to be set to out
In mouthful, the area of opening limits the size of each organic luminescent device OLED in display panel, to limit display panel neutron
The pixel openings area of pixel unit 120.First sub-pixel unit 120a, the second sub-pixel unit 120b and third sub-pixel list
The area of first 120c split sheds is gradually reduced, to the first sub-pixel unit 120a, the second sub-pixel unit 120b and third
The area of organic luminous layer 124 is gradually reduced in pixel unit 120c, the first sub-pixel unit 120a, the second sub-pixel unit
The pixel openings area of 120b and third sub-pixel unit 120c are gradually reduced.
With continued reference to Fig. 6, optionally, wherein sub-pixel unit 120 is that fingerprint identification unit 210 provides light source, and fingerprint is known
Other unit 210 be used for the light that is sent out according to sub-pixel unit 120 via touch main body be reflected into fingerprint identification unit 210 with into
Row fingerprint recognition.
Specifically, with continued reference to Fig. 6, due to pressing ridge 40 and panel surface in the finger print of display panel
Contact, paddy 30 do not contact with panel surface, cause the paddy 30 that light is irradiated to fingerprint different with the reflectivity on ridge 40, into
And the reflected light formed at the position of ridge 30 for causing fingerprint identification unit 210 to receive and the formation at the position of paddy 40
The intensity of reflected light is different so that by the reflected light that the position of ridge 40 is formed and the reflected light formed at the position of paddy 30
It is of different sizes to be converted into photoelectric current, fingerprint recognition can be carried out according to photoelectric current size.
Sub-pixel unit 120 is that fingerprint identification unit 210 provides light source, without being arranged additionally for fingerprint identification unit 210
Light source, reduce the thickness of display panel and the processing step of display panel.
With reference to figure 14, Figure 14 is the sectional view of another display panel provided in an embodiment of the present invention, optionally, wherein
Further include fingerprint recognition light source 50, the light that fingerprint identification unit 210 is used to be sent out according to fingerprint recognition light source 50 is via touch
Main body is reflected into fingerprint identification unit 210 to carry out fingerprint recognition.
4 are continued to refer to figure 1, optionally, wherein be equipped with angle between underlay substrate 110 and fingerprint identification unit 210 and limit
Film 60, angle limit film 60 and are used to be reflected into the light of fingerprint identification unit 210 via touch main body, limited relative to angle
The incidence angle for determining film 60 is filtered out more than the light through angle of angle restriction film 60.
Specifically, being possible to expose to the same fingerprint identification unit via the light for touching the reflection of main body different location
On 210, for example, be possible to expose to same fingerprint recognition list via the light of the ridge for touching main body and the transmitting of adjacent paddy
Member 210, the fingerprint identification unit 210 of reception light in this way can not just detect the accurate location of the ridge and paddy of fingerprint, cause fingerprint
There are serious crosstalk phenomenons for identification process, influence the accuracy and precision of 210 fingerprint recognition of fingerprint identification unit.
The embodiment of the present invention limits film 60 by being equipped with angle between underlay substrate 110 and fingerprint identification unit 210, and
Angle limits film 60 and is used to be reflected into the light of fingerprint identification unit 210 via touch main body, and film is limited relative to angle
The light through angle that 60 incidence angle is more than angle restriction film 60 filters out, and effectively prevents anti-via main body different location is touched
Crosstalk phenomenon caused by the light penetrated exposes to same fingerprint identification unit 210 improves 210 fingerprint recognition of fingerprint identification unit
Accuracy and precision.
The embodiment of the present invention provides a kind of image element driving method, is used for display panel provided by the present application, including：
The effective impulse duty ratio of LED control signal is in pixel-driving circuit described in first sub-pixel unit
T1, the effective impulse duty ratio of LED control signal is t2, institute in pixel-driving circuit described in second sub-pixel unit
The effective impulse duty ratio for stating LED control signal in pixel-driving circuit described in third sub-pixel unit is t3；Wherein, 0 <
T3 < t2 < t1.
With continued reference to Fig. 4, first switch transistor M1 whether control organic luminescent device OLED shines according to grid
The LED control signal of input realizes the opening and closing of the luminous first switch transistor M1 of the control, only in first switch
When transistor M1 is in open state, organic luminescent device OLED can shine, the opening time of first switch transistor M1
Determine the luminous duration of organic luminescent device OLED, the luminous duration of organic luminescent device OLED is longer, then the brightness of picture
It is bigger.When first switch transistor M1 can be made to be in LED control signal time of open state account for total LED control signal
Between ratio be LED control signal effective impulse duty ratio, therefore, by control LED control signal effective impulse account for
The empty light emission luminance than sub-pixel unit can be controlled.
From the region close to binding area to region the asking there are IR pressure drops (IR drop) far from binding area in display panel
Topic, i.e., can cause the brightness of the first sub-pixel unit, the second sub-pixel unit and third sub-pixel unit gradually to increase.First son
The pixel openings area of pixel unit, the second sub-pixel unit and third sub-pixel unit gradually successively decreases, and delays to a certain extent
The brightness different problems for solving the first sub-pixel unit, the second sub-pixel unit and third sub-pixel unit, so as to certain
Alleviate display panel in degree and shows inhomogenous problem.First sub-pixel unit, the second sub-pixel unit and third pixel list
The effective impulse duty ratio of LED control signal is gradually reduced in pixel-driving circuit described in member, further improves the first son
The brightness different problems of pixel unit, the second sub-pixel unit and third sub-pixel unit, so that each in display panel
The brightness of a sub-pixel unit is more unified, so that the brightness of display panel is more uniform.
With reference to figure 15, Figure 15 is a kind of front view for display device that the embodiment of the present invention is provided, the embodiment of the present invention
A kind of display device 1000, including display panel as described above are provided.
Specifically, continuing to refer to figure 15, display device 1000 provided in an embodiment of the present invention is mobile phone, the display device
1000 include display panel as described above, in addition, it will be understood by those skilled in the art that the display device 1000 of the application is removed
Include except display panel, can also include some other well known structures.It, will not in order not to obscure the emphasis of the application
These well known structures are further described again.It should be noted that the application display device is not limited to shown in Figure 15
Mobile phone, can also be computer, television set, the devices such as e-book.
With reference to figure 1 and Figure 15, optionally, wherein the binding of binding area 130 has chip or flexible circuit board.
Specifically, with continued reference to Fig. 1 and Figure 15, display device 1000 includes display panel as described above, wherein display
The binding of binding area 130 in panel has chip (Integrated Circuit, abbreviation IC) or flexible circuit board (Flexible
Printed Circuit, abbreviation FPC), in addition, it will be understood by those skilled in the art that the display device 1000 of the application in addition to
Can also include some other well known structures except display panel.
It is by above-described embodiment it is found that provided by the invention, at least realize following advantageous effect：
The pixel openings area of first sub-pixel unit is more than the pixel openings area of the second sub-pixel unit, to a certain degree
Upper alleviation display panel shows inhomogenous problem, correspondingly, the area of organic luminescent device is less than second in the first sub-pixel
The area of organic luminescent device in sub-pixel unit can by reducing the area of organic luminescent device in the second sub-pixel unit
Raising is located at the induction precision of the fingerprint identification unit in the second pixel region in the upright projection of underlay substrate.First sub-pixel list
In member the first power voltage terminal to the resistance between the anode of organic luminescent device be R1, the first power supply in the second sub-pixel unit
Voltage end to the resistance between the anode of organic luminescent device be R2, wherein 0 < R1 < R2.Then passed through in the first sub-pixel unit
The driving current for crossing organic luminescent device is more than the driving current for passing through organic luminescent device in the second sub-pixel unit, further
Improve the light emission luminance different problems of the first sub-pixel unit and the second sub-pixel unit, so that the brightness of display panel
More uniformly.
Although some specific embodiments of the present invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to illustrating, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above example.This hair
Bright range is defined by the following claims.
Claims (16)
1. a kind of display panel, which is characterized in that including：
Viewing area and non-display area around the viewing area；
Underlay substrate；
Multiple sub-pixel units are located at the underlay substrate side, and are located at the viewing area；
Fingerprint identification unit is located at side of the sub-pixel unit far from light-emitting surface, and the fingerprint identification unit is in the lining
The upright projection of substrate is located in the viewing area；
The non-display area includes binding area；
The viewing area also includes at least the first pixel region and the second pixel region, first pixel region and second pixel region
It arranges along first direction, second pixel region is between first pixel region and the binding area；
First pixel region includes multiple first sub-pixel units, and second pixel region includes multiple second sub-pixel lists
Member；
The pixel openings area of first sub-pixel unit is more than the pixel openings area of second sub-pixel unit；
The sub-pixel unit includes pixel-driving circuit and organic luminescent device；
The organic luminescent device includes anode and cathode；
The pixel-driving circuit includes at least the first power voltage terminal and is connected to first power voltage terminal and the sun
The grid of first switch transistor between pole and driving transistor, the first switch transistor connects LED control signal
The grid at end, the driving transistor connects storage capacitance；
The first power voltage terminal is between the anode described in pixel-driving circuit described in first sub-pixel unit
Resistance is R1, and the first power voltage terminal is between the anode described in pixel-driving circuit described in second sub-pixel
Resistance is R2；Wherein, 0 < R1 < R2.
2. display panel according to claim 1, which is characterized in that
The viewing area also includes at least third pixel region, first pixel region, second pixel region and the third picture
Plain area arranges along first direction, and the third pixel region is between second pixel region and the binding area；
The third pixel region includes multiple third sub-pixel units；
The pixel openings area of second sub-pixel unit is less than the pixel openings area of first sub-pixel unit, and big
In the pixel openings area of the third sub-pixel unit；
The first power voltage terminal is between the anode described in pixel-driving circuit described in the third sub-pixel unit
Resistance is R3；Wherein, 0 < R1 < R2 < R3.
3. display panel according to claim 2, which is characterized in that
The pixel-driving circuit further includes being connected to first power voltage terminal, the first switch transistor, the drive
Dynamic power cord between transistor and the anode.
4. display panel according to claim 3, which is characterized in that
The line width of power cord described in pixel-driving circuit described in second sub-pixel unit is more than first sub-pixel
The line width of power cord described in pixel-driving circuit described in unit, and driven less than pixel described in the third sub-pixel unit
The line width of power cord described in dynamic circuit.
5. display panel according to claim 3, which is characterized in that
The length of power cord described in pixel-driving circuit described in second sub-pixel unit is more than first sub-pixel
The length of power cord described in pixel-driving circuit described in unit, and driven less than pixel described in the third sub-pixel unit
The length of power cord described in dynamic circuit.
6. display panel according to claim 2, which is characterized in that
The drain electrode of first switch transistor described in the pixel-driving circuit connects the anode by the first via；
The aperture of first via described in second sub-pixel unit is less than the first mistake described in first sub-pixel unit
The aperture in hole, and more than the aperture of the first via described in the third sub-pixel unit.
7. display panel according to claim 2, which is characterized in that
The pixel-driving circuit further includes second be connected between first power voltage terminal and the driving transistor
The grid of switching transistor, the second switch transistor connects the LED control signal end, the second switch transistor
Source electrode pass through the second via and connect first power voltage terminal；
The aperture of second via described in second sub-pixel unit is less than the second mistake described in first sub-pixel unit
The aperture in hole, and more than the aperture of the second via described in the third sub-pixel unit.
8. display panel according to claim 2, which is characterized in that
Organic luminescent device described in the sub-pixel unit includes anode, organic luminous layer and cathode, second sub-pixel
The area of anode described in unit is less than the area of anode described in first sub-pixel unit, and is more than the third picture
The area of anode described in plain unit.
9. display panel according to claim 8, which is characterized in that
Further include pixel defining layer, the pixel defining layer is set between the anode and the cathode, the pixel definition
There is layer opening, the organic luminous layer to be set in the opening；
The area being open described in second sub-pixel unit is less than the area being open described in first sub-pixel unit,
And more than the area being open described in the third sub-pixel unit.
10. display panel according to claim 2, which is characterized in that
The fingerprint identification unit is located in the upright projection of the underlay substrate in the third pixel region.
11. display panel according to claim 10, which is characterized in that
The sub-pixel unit provides light source for the fingerprint identification unit, and the fingerprint identification unit is used for according to the sub- picture
The light that plain unit is sent out is reflected into the fingerprint identification unit to carry out fingerprint recognition via main body is touched.
12. display panel according to claim 10, which is characterized in that
Further include fingerprint recognition light source, the light that the fingerprint identification unit is used to be sent out according to the fingerprint recognition light source via
It touches main body and is reflected into the fingerprint identification unit to carry out fingerprint recognition.
13. display panel according to claim 1, which is characterized in that
It is equipped with angle between the underlay substrate and the fingerprint identification unit and limits film, the angle limits film for will be via
It touches main body to be reflected into the light of the fingerprint identification unit, the incidence angle that film is limited relative to the angle is more than the angle
The light through angle that degree limits film filters out.
14. a kind of image element driving method of display panel as claimed in claim 2, it is characterised in that：
The effective impulse duty ratio of LED control signal is t1, institute in pixel-driving circuit described in first sub-pixel unit
The effective impulse duty ratio for stating LED control signal in pixel-driving circuit described in the second sub-pixel unit is t2, the third
The effective impulse duty ratio of LED control signal is t3 in pixel-driving circuit described in sub-pixel unit；Wherein, 0 < t3 < t2
< t1.
15. a kind of display device, which is characterized in that including claim 1-13 any one of them display panels.
16. display device according to claim 15, which is characterized in that
The binding area binding has chip or flexible circuit board.
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