CN106229317B - Organic light emitting display panel and its fingerprint identification method - Google Patents
Organic light emitting display panel and its fingerprint identification method Download PDFInfo
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- CN106229317B CN106229317B CN201610595757.9A CN201610595757A CN106229317B CN 106229317 B CN106229317 B CN 106229317B CN 201610595757 A CN201610595757 A CN 201610595757A CN 106229317 B CN106229317 B CN 106229317B
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000010409 thin film Substances 0.000 claims abstract description 19
- 239000011159 matrix material Substances 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims description 10
- 239000010408 film Substances 0.000 claims description 2
- 239000000758 substrate Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 229910001316 Ag alloy Inorganic materials 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000005525 hole transport Effects 0.000 description 1
- GRPQBOKWXNIQMF-UHFFFAOYSA-N indium(3+) oxygen(2-) tin(4+) Chemical class [Sn+4].[O-2].[In+3] GRPQBOKWXNIQMF-UHFFFAOYSA-N 0.000 description 1
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical group O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- SJCKRGFTWFGHGZ-UHFFFAOYSA-N magnesium silver Chemical compound [Mg].[Ag] SJCKRGFTWFGHGZ-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
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- 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
- H01L27/124—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 with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits
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- 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
- H01L27/1255—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 integrated with passive devices, e.g. auxiliary capacitors
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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
- H10K59/40—OLEDs integrated with touch screens
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electroluminescent Light Sources (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
Abstract
The present invention provides organic light emitting display panel and its fingerprint identification methods, and wherein organic light emitting display panel, includes display area and non-display area, further includes: the thin film transistor (TFT) of multiple matrix arrangements；At least anode layer of an anode, is formed in the side of thin film transistor (TFT), and anode is configured as public electrode；Organic luminous layer is formed in the side that anode layer is away from each other thin film transistor (TFT)；Cathode layer with multiple cathodes, is formed in the side that organic luminous layer is away from each other anode layer, and cathode is electrically connected to corresponding thin film transistor (TFT) by organic luminous layer and is formed as pixel electrode；And timesharing driving circuit, it is electrically connected to cathode, cathode is configured as time-sharing multiplex, is alternatively formed as pixel electrode or self-tolerant fingerprint recognition electrode.The present invention has both display function and fingerprint identification function under the premise of not increasing organic light emitting display panel thickness by anticathode time-sharing multiplex.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of organic light emitting display panel and its fingerprint identification methods.
Background technique
Fig. 1 is the diagrammatic cross-section of the organic light emitting display panel of the prior art.Fig. 2 is that the organic light emission of the prior art is aobvious
Show the cross-sectional view of panel.Shown in structural representation Fig. 1 and 2 of current most of OLED products, a kind of existing organic light emitting display
Panel include: array substrate 1 ', anode layer 3 ' (including multiple anodes 30 '), organic luminous layer, cathode layer 5 ', cover board 6 ' and
Touch control electrode 7 '.
Specifically, array substrate 1 ' has thin film transistor (TFT) (Thin-film transistor, the letter of multiple matrix arrangements
Claim: TFT) 2 '.Anode layer 3 ' with multiple anodes 30 ', is formed on array substrate 1 '.Organic luminous layer 4 ' and pixel are fixed
Adopted layer 14 ' is formed on anode layer 3 '.Pixel defining layer 14 ' has the opening of multiple matrix arrangements to define pixel region,
Organic luminous layer 4 ' is located in the opening of pixel defining layer 14 '.Cathode layer 5 ' is formed on organic luminous layer 4 '.Cover board 6 '
It is formed on cathode layer 5 '.Touch control electrode 7 ' is formed on cover board 6 ', and touch control electrode 7 ' is electrically connected touch-control identification module
10 ', touch-control identification module 10 ' positions position of touch by detecting the capacitance variations of touch control electrode 7 '.Wherein, 30 ' electricity of anode
The drain electrode of TFT in array substrate 1 ' is connected as its pixel electrode, the corresponding sub-pixel of each anode 30 '.Cathode layer 5 ' is made
For public electrode, and the first power input of the electrical connection of cathode layer 5 ' 8 ' (such as: PVEE).The grid G of TFT 2 ' is electrically connected data
Line 11 '；TFT 2 ' source S electrical connection second source input terminal 9 ' (such as: PVDD)；The drain D of TFT 2 ' is electrically connected anode
30′。
Fig. 3 is the top view of the organic light emitting display panel Anodic layer of the prior art.Fig. 4 is organic hair of the prior art
The top view of cathode layer in light display panel.With further reference to Fig. 1 to 4, in the organic light emitting display panel of the prior art, cathode
Layer 5 ' includes multiple cathodes 50 ' (although Fig. 1, only showing a cathode 50 ' in 4, but not limited to this), and each cathode 50 ' is right
Multiple anodes 30 ' are answered, the picture that anode 30 ' and cathode layer 5 ' are mainly used for organic light emitting display panel is shown.It is existing organic
In light emitting display panel, it includes multiple anodes 30 ' that TFT 2 ', which drives organic light emitting display panel, and each anode 30 ' is one corresponding
Pixel unit, cathode layer 5 ' are the common electrode of whole face formula, accordingly, it is considered to integrate touching to the screen effect of electric field to cathode layer 5 '
Control generallys use On cell structure, so, touch control electrode 7 ' is located at the outside of cover board 6 '.Touch control electrode 7 ' can be self-tolerant
Be also possible to mutual capacitance type, details are not described herein again.
Main problem of the existing technology is: since the shielding of cathode layer in top driving organic light emitting display panel is made
With integrated touch scheme can only more use On cell structure.But the touch scheme of this On cell influences OLED and produces
Product thickness, also, the touch-control structure of On cell needs above to press FPC (flexible circuit in the cover board 6 ' of organic light emitting display panel
Plate), influence product shape and increase cost, although also, current organic light emitting display panel can be except display function
The function of integrated touch-control identification, but cannot achieve can not carry out the function of fingerprint recognition in organic light emitting display panel.
Summary of the invention
For the problems of the prior art, the purpose of the present invention is to provide organic light emitting display panel and its fingerprint recognitions
Method, can except display function integrating fingerprint identification function.
A kind of organic light emitting display panel provided in an embodiment of the present invention includes display area and non-display area, also wraps
It includes:
The thin film transistor (TFT) of multiple matrix arrangements；
At least anode layer of an anode, is formed in the side of the thin film transistor (TFT), and the anode is configured as common electrical
Pole；
Organic luminous layer is formed in the side that the anode layer is away from each other the thin film transistor (TFT)；
Cathode layer with multiple cathodes is formed in the side that the organic luminous layer is away from each other the anode layer, described
Cathode is electrically connected to the corresponding thin film transistor (TFT) by the organic luminous layer and is formed as pixel electrode；And
Timesharing driving circuit is electrically connected to the cathode, and the cathode is configured as time-sharing multiplex, is alternatively formed as pixel
Electrode or self-tolerant fingerprint recognition electrode.
Optionally, the timesharing driving circuit exports in fingerprint recognition voltage or display driving voltage to the cathode timesharing
One kind.
Optionally, the timesharing driving circuit accounts for the 70% of total duration to the duration that the cathode exports display driving voltage
To 90%.
Optionally, the duration range of the timesharing driving circuit to cathode output fingerprint recognition voltage is 2 milliseconds to 5
Millisecond.
Optionally, the anode layer is a flood anode layer of corresponding display area.
Optionally, the anode layer is multiple anodes of the matrix arrangement in display area.
Optionally, the cathode has the lead to extend to the thin film transistor (TFT), and the anode layer has multiple connections
Channel, the lead pass through the interface channel and are electrically connected to the timesharing driving circuit.
Optionally, an anode corresponds to multiple cathodes, and each anode has multiple as the connection
The via hole in channel, the lead pass through the via hole.
Optionally, the corresponding cathode of an anode, conduct institute of the lead across the anode
State the gap of interface channel.
Optionally, the distance on surface of the cathode layer apart from the organic light emitting display panel is less than 200um.
Optionally, the timesharing driving circuit includes self-capacitance change detection unit, acquires the self-tolerant fingerprint recognition
The capacitance change of electrode.
Optionally, the self-capacitance change detection unit is set to the whole face of display area or is set to display area
Partial region
Optionally, the self-capacitance change detection unit is set to any corner of non-display area.
The embodiment of the present invention also provides a kind of fingerprint identification method of organic light emitting display panel, using such as above-mentioned organic
Light emitting display panel, by the cathode time-sharing multiplex, be alternatively formed for the organic light emitting display panel pixel electrode or from
One of appearance formula fingerprint recognition electrode；
When the cathode is pixel electrode, the timesharing driving circuit output display driving voltage is to cathode, to light
The organic luminous layer；
When the cathode is self-tolerant fingerprint recognition electrode, the timesharing driving circuit acquires each self-tolerant and refers to
Line identifies the self-capacitance variable of electrode to detect fingerprint.
Optionally, the organic light emitting display panel is every shown at least 1 frame picture after, all cathodes be converted to from
Appearance formula fingerprint recognition electrode carries out fingerprint recognition at least once.
Organic light emitting display panel and its fingerprint identification method of the invention has the advantage that
The present invention is had both under the premise of not increasing organic light emitting display panel thickness by anticathode time-sharing multiplex
Display function and fingerprint identification function.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon.
Fig. 1 is the diagrammatic cross-section of the organic light emitting display panel of the prior art；
Fig. 2 is the cross-sectional view of the organic light emitting display panel of the prior art；
Fig. 3 is the top view of the organic light emitting display panel Anodic layer of the prior art；
Fig. 4 is the top view of cathode layer in the organic light emitting display panel of the prior art；
Fig. 5 is the diagrammatic cross-section of the first organic light emitting display panel of the invention；
Fig. 6 is the cross-sectional view of the first organic light emitting display panel of the invention；
Fig. 7 is the top view of the first organic light emitting display panel Anodic layer of the invention；
Fig. 8 is the top view of cathode layer in the first organic light emitting display panel of the invention；
Fig. 9 is the circuit of the timesharing driving circuit of a corresponding cathode in the first organic light emitting display panel of the invention
Figure；
Figure 10 is the schematic diagram that the first organic light emitting display panel of the invention carries out fingerprint recognition；
Figure 11 is the schematic diagram that the first organic light emitting display panel of the invention carries out fingerprint recognition；
Figure 12 is the diagrammatic cross-section of second of organic light emitting display panel of the invention；And
Figure 13 is the top view of second of organic light emitting display panel Anodic layer of the invention.
Specific embodiment
Example embodiment is described more fully with reference to the drawings.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, thesing embodiments are provided so that the present invention will
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.It is identical attached in figure
Icon note indicates same or similar structure, thus will omit repetition thereof.
Fig. 5 is the diagrammatic cross-section of the first organic light emitting display panel of the invention.Fig. 6 is that the first of the invention has
The cross-sectional view of machine light emitting display panel.As it can be seen in figures 5 and 6, a kind of organic light emitting display panel of the invention, includes display area
And non-display area, further includes: array substrate 1, anode layer 3, organic luminous layer 4, cathode layer 5, cover board 6 and timesharing driving electricity
Road 13, however the present invention is not limited to cover board encapsulation, the present invention can also include the organic light emitting display panel of thin-film package.Array
Substrate 1 has the thin film transistor (TFT) of multiple matrix arrangements.There is anode layer 3 an at least anode 30, anode layer 3 to be formed in array base
On plate 1, anode 30 is configured as public electrode.Organic luminous layer 4 is formed on anode layer 3.Cathode layer 5 has multiple yin
Pole 50, cathode layer 5 are formed on organic luminous layer 4, and cathode 50 is electrically connected to corresponding array substrate by organic luminous layer 4
In 1 thin film transistor (TFT) drain electrode (such as: the T5 in Fig. 9) be formed as pixel electrode.In the present embodiment, 13 shape of timesharing driving circuit
At in array substrate 1, but not limited to this.Timesharing driving circuit 13 is electrically connected to cathode 50, and cathode 50 is configured as timesharing
Multiplexing, is alternatively formed as pixel electrode or self-tolerant fingerprint recognition electrode.Timesharing driving circuit 13 includes self-capacitance variation detection
Unit acquires the capacitance change of self-tolerant fingerprint recognition electrode.Timesharing driving circuit 13 is known to 50 timesharing of cathode output fingerprint
One of other voltage or display driving voltage.So that organic light emitting display panel of the invention is known without additional configuration fingerprint
In the case where other electrode, fingerprint recognition can be equally carried out.In a preferred embodiment, in order to enhance signal-to-noise ratio, cathode layer distance
The distance on the surface of organic light emitting display panel is less than 200um.
It in the present embodiment, include that three sub-pixels (sub-pixel R, sub-pixel G and sub-pixel B) are with each pixel unit
Example is introduced, and each anode 30 can be used as the total service message pole an of pixel unit, i.e., each anode 30 corresponds to a picture
Plain unit, and three sub-pixels of each pixel unit: sub-pixel R, sub-pixel G and sub-pixel B respectively correspond to an independence
Cathode 50, but not limited to this.In other embodiments, an anode 30 (service message pole altogether) can be used for controlling multiple
Pixel unit.Also, a pixel unit also may include multiple sub-pixels, and each sub-pixel respectively corresponds to an independent yin
Pole 50.Anode 30 and cathode 50 not only show in the display stage of organic light emitting display panel for the picture of OLED, Er Qie
The fingerprint recognition stage of organic light emitting display panel carries out touch-control identification by the time-sharing multiplex of anode 30.
In a variation, anode layer 3 is a flood anode layer of corresponding display area, such as: a flood anode layer 3
Area can cover entire display area.
In another variation, anode layer 3 is multiple anodes 30 of the matrix arrangement in display area.Cathode 50 has
The lead 51 to extend to thin film transistor (TFT), anode layer have multiple interface channels, and lead passes through interface channel and is electrically connected to timesharing
Driving circuit.Interface channel can be set between the via hole 31 or anode 30 of anode 30 gap (see Figure 12,
13) it, will be introduced respectively below both structures.
Fig. 7 is the top view of the first organic light emitting display panel Anodic layer of the invention.As shown in fig. 7, of the invention
Organic light emitting display panel anode layer 3 in each anode 30, including multiple first via holes 31.
Fig. 8 is the top view of cathode layer in the first organic light emitting display panel of the invention.As shown in figure 8, of the invention
Organic light emitting display panel in cathode layer 5 including multiple matrix arrangements cathode 50.
With continued reference to shown in Fig. 5 to 8, the cathode 50 in the present invention has the lead 51 to extend to timesharing driving circuit 13,
There are multiple channels, lead 51 passes through channel and is electrically connected to timesharing driving circuit 13 on organic luminous layer 4 and/or anode 30.This
Channel in embodiment mainly includes the second via hole 41 that organic luminous layer 4 is arranged in and the first mistake that anode layer 3 is arranged in
Hole 31.The method of reserved second via hole 41 may is that is used covers through OLED during organic luminous layer 4 are deposited
Film designs the barrier zones for having fixed position and particular size in each sub-pixel, during vapor deposition, in the barrier zones
Metal pattern by stop OLED luminescent material be deposited on anode layer 3, the region being blocked leaves cathode 50 and array base in advance
The second via hole 41 that timesharing driving circuit 13 contacts in plate 1, but not limited to this.Alternatively, printing processing procedure, Ke Yizhi for OLED
OLED pattern required for printing off is taken, the region without OLED luminescent material can be selected as the second via hole in each pixel
41.Again alternatively, product for high pixel density, when no matter being deposited or print processing procedure in each sub-pixel such as without sufficient space
When forming white space, then it can attempt to increase laser scorification process after OLED pattern is formed, to needing to form the second via hole
41 region is fused with laser.
In an embodiment of the invention, the organic luminous layer 4 in the present invention includes from anode layer 3 to cathode layer 5
Hole injection layer, hole transport layer, luminous material layer, electronics transfer layer and the electron injecting layer being cascading, i.e., originally
Organic light emitting display panel in embodiment is a kind of organic light emitting display panel of top driving.Cathode 50 in the present invention it is excellent
Material selection is magnesium silver alloy, realizes independent pixel by vapor deposition exposure mask.But not limited to this.Anode 30 is optionally three layer laminates
Structure, the material of first layer are tin indium oxides, and the material of the second layer is silver, and the material of third layer is tin indium oxide, second layer position
Between first layer and third layer, but not limited to this.
In a variation, the self-capacitance change detection unit in the present invention is set to the whole face of display area or sets
It is placed in the partial region of display area.Alternatively, the self-capacitance change detection unit setting in another variation, in the present invention
In any corner of non-display area.
In an embodiment of the invention, timesharing driving circuit 13 exports the duration of display driving voltage to cathode 50
The 70% to 90% of total duration is accounted for, but not limited to this.If timesharing drive module 13 exports display driving voltage to cathode 50
Duration is too long, then reduces the effect of fingerprint recognition；And if timesharing drive module 13 exports display driving voltage to cathode 50
Duration is too short, then can reduce the display effect of organic light emitting display panel.So cathode 50 is within 70% to 90% time
As the pixel electrode of organic light emitting display panel, organic luminous layer 4 is driven to carry out the display of picture, remaining time cathode 50 is made
For self-tolerant fingerprint recognition electrode.Also, timesharing drive module 13 can to the duration range that cathode 50 exports fingerprint recognition voltage
To be 2 milliseconds to 5 milliseconds, but not limited to this.
Fig. 9 is the circuit of the timesharing driving circuit of a corresponding cathode in the first organic light emitting display panel of the invention
Figure.Fig. 9 is a kind of physical circuit figure of timesharing driving circuit of a corresponding cathode, and but not limited to this, is also possible to others
Control circuit carries out anticathode timesharing driving.As shown in figure 9, display circuit 100 and fingerprint recognition circuit 200 are separately connected
To the cathode of the luminous organic material D1 of a corresponding sub-pixel.Display circuit 100 includes the first transistor T1, second transistor
T2, third transistor T3, the 4th transistor T4, the 5th transistor T5 and first capacitor C1.Fingerprint recognition circuit 200 includes the
Details are not described herein again for the working principle of six transistor T6 and the second capacitor C2, display circuit 100 and fingerprint recognition circuit 200.
The present invention also provides a kind of fingerprint identification methods of organic light emitting display panel, using above-mentioned organic light emitting display
50 time-sharing multiplex of cathode is alternatively formed and is referred to for the pixel electrode or self-tolerant of the organic light emitting display panel by panel
Line identifies one of electrode.When the cathode 50 is pixel electrode, the output of the timesharing driving circuit 13 display driving electricity
It is pressed onto cathode, to light the organic luminous layer.When the cathode 50 is self-tolerant fingerprint recognition electrode, the timesharing driving
Circuit 13 acquires the self-capacitance variable of each self-tolerant fingerprint recognition electrode to detect fingerprint.In a preferred embodiment
In, the organic light emitting display panel is every shown at least 1 frame picture after, all cathodes are converted to self-tolerant fingerprint recognition
Electrode carries out fingerprint recognition at least once, and but not limited to this.
Figure 10 is the schematic diagram that the first organic light emitting display panel of the invention carries out fingerprint recognition.Figure 11 is the present invention
The first organic light emitting display panel carry out fingerprint recognition schematic diagram.As shown in FIG. 10 and 11, when the finger of user 300
Close to the first organic light emitting display panel of the invention cathode 50 when, since the screw thread of the finger of people has the fingerprint of finger
Convex (fingerprint ridge) has recessed (fingerprint valley), thus varies when finger touch to the self-capacitance of each cathode 50, so that corresponding position
The cathode 50 set can acquire capacitance according to the convex-concave of fingerprint, to judge that the position is fingerprint according to the difference of capacitance
Ridge or fingerprint valley successively obtain specific fingerprint pattern.Also, the area of normal finger and screen contact is in 15mm*
20mm, there is a short thorn, and the width of each pixel is 30um, then when finger touches below cathode number at 500*200.Such as Figure 10
It is shown, the concaveconvex shape of this finger can be simulated by the capacitance size of this 100000 electrodes, simulate the finger of finger
Line.
Figure 12 is the diagrammatic cross-section of second of organic light emitting display panel of the invention.Figure 13 is of the invention second
The top view of organic light emitting display panel Anodic layer.As shown in Figure 12,13, the present invention also provides second of organic light emitting displays
The difference of panel, second of organic light emitting display panel and the first aforementioned organic light emitting display panel is: second organic
The corresponding cathode 50 of anode 35 in light emitting display panel, lead 51 across anode 35 as between interface channel
Gap (it is not necessary that via hole is arranged on anode) connects the timesharing driving circuit 13 in array substrate 1.In a variation, the third has
Machine light emitting display panel can be simultaneously using the gap between the contact hole and anode 35 that anode 35 is arranged in, for cathode 50
Lead 51 passes through, and is thus connected to timesharing driving circuit 13, details are not described herein again.
The present embodiment additionally provides a kind of display device, may include any one of the above organic light emitting display panel.It is aobvious
Showing device can be mobile phone, desktop computer, notebook, tablet computer, electron album etc..
To sum up, organic light emitting display panel of the invention and its fingerprint identification method pass through anticathode time-sharing multiplex,
Under the premise of not increasing organic light emitting display panel thickness, display function and fingerprint identification function are had both.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (14)
1. a kind of organic light emitting display panel includes display area and non-display area, which is characterized in that further include:
The thin film transistor (TFT) of multiple matrix arrangements；
At least anode layer of an anode, is formed in the side of the thin film transistor (TFT), and the anode is configured as public electrode；
Organic luminous layer is formed in the side that the anode layer is away from each other the thin film transistor (TFT)；
Cathode layer with multiple cathodes is formed in the side that the organic luminous layer is away from each other the anode layer, the cathode
The corresponding thin film transistor (TFT), which is electrically connected to, by the organic luminous layer is formed as pixel electrode；And
Timesharing driving circuit is electrically connected to the cathode, and the cathode is configured as time-sharing multiplex, is alternatively formed as pixel electrode
Or self-tolerant fingerprint recognition electrode, the timesharing driving circuit includes self-capacitance change detection unit, acquires the self-tolerant and refers to
Line identifies the capacitance change of electrode, and the timesharing driving circuit and the self-capacitance change detection unit are formed in array base
In plate.
2. organic light emitting display panel according to claim 1, which is characterized in that the timesharing driving circuit is to the yin
Pole timesharing exports one of fingerprint recognition voltage or display driving voltage.
3. organic light emitting display panel according to claim 2, which is characterized in that the timesharing driving circuit is to the yin
The duration of pole output display driving voltage accounts for the 70% to 90% of total duration.
4. organic light emitting display panel according to claim 2, which is characterized in that the timesharing driving circuit is to the yin
The duration range that pole exports fingerprint recognition voltage is 2 milliseconds to 5 milliseconds.
5. organic light emitting display panel according to claim 1, which is characterized in that the anode layer is corresponding display area
A flood anode layer.
6. organic light emitting display panel according to claim 1, which is characterized in that the anode layer is in display area
Multiple anodes of matrix arrangement.
7. organic light emitting display panel according to claim 6, it is characterised in that: the cathode has brilliant to the film
The lead that body pipe extends, the anode layer have multiple interface channels, and the lead passes through the interface channel and is electrically connected to institute
State timesharing driving circuit.
8. organic light emitting display panel according to claim 7, which is characterized in that an anode corresponds to multiple described
Cathode, each anode have multiple via holes as the interface channel, and the lead passes through the via hole.
9. organic light emitting display panel according to claim 7, which is characterized in that described in an anode is one corresponding
Cathode, the gap of as described in interface channel of the lead across the anode.
10. organic light emitting display panel according to claim 1, which is characterized in that the cathode layer is apart from described organic
The distance on the surface of light emitting display panel is less than 200um.
11. organic light emitting display panel according to claim 1, which is characterized in that the self-capacitance change detection unit
It is set to the whole face of display area or is set to the partial region of display area.
12. organic light emitting display panel according to claim 1, which is characterized in that the self-capacitance change detection unit
It is set to any corner of non-display area.
13. a kind of fingerprint identification method of organic light emitting display panel, which is characterized in that using as appointed in claim 1 to 12
The cathode time-sharing multiplex is alternatively formed as the organic light emitting display face by organic light emitting display panel described in meaning one
One of pixel electrode or self-tolerant fingerprint recognition electrode of plate；
When the cathode is pixel electrode, the timesharing driving circuit output display driving voltage to cathode is described to light
Organic luminous layer；
When the cathode is self-tolerant fingerprint recognition electrode, each self-tolerant fingerprint of timesharing driving circuit acquisition is known
The self-capacitance variable of other electrode is to detect fingerprint.
14. fingerprint identification method according to claim 13, which is characterized in that the every display of organic light emitting display panel
After complete at least 1 frame picture, all cathodes are converted to self-tolerant fingerprint recognition electrode, carry out fingerprint recognition at least once.
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| TWI734861B (en) * | 2016-12-19 | 2021-08-01 | 瑞典商指紋卡公司 | Capacitive fingerprint sensing device comprising display functionality |
| CN107092858A (en) * | 2017-02-27 | 2017-08-25 | 努比亚技术有限公司 | A kind of fingerprint recognition module and its production method, terminal and method for information display |
| CN106874892B (en) * | 2017-03-22 | 2020-12-18 | 联想(北京)有限公司 | Fingerprint detection method and electronic equipment |
| US10395084B2 (en) * | 2017-09-29 | 2019-08-27 | Superc-Touch Corporation | Fingerprint identification device |
| CN107749419B (en) * | 2017-10-31 | 2021-06-18 | 武汉天马微电子有限公司 | Electroluminescent display panel and display device |
| CN108155222B (en) * | 2018-01-31 | 2020-05-15 | 厦门凌阳华芯科技有限公司 | Organic electroluminescent display device |
| CN108565354B (en) * | 2018-04-20 | 2020-03-24 | 京东方科技集团股份有限公司 | Display panel, preparation method thereof and display device |
| CN109564629B (en) * | 2018-10-15 | 2023-07-11 | 深圳市汇顶科技股份有限公司 | Fingerprint detection device and terminal equipment with fingerprint identification function |
| CN109358706B (en) * | 2018-10-30 | 2021-09-28 | 厦门天马微电子有限公司 | Display panel and display device |
| CN109886163B (en) * | 2019-01-30 | 2021-08-06 | 武汉华星光电半导体显示技术有限公司 | Display device with fingerprint identification function and manufacturing method thereof |
| CN110097023B (en) * | 2019-05-13 | 2023-06-30 | 成都晶砂科技有限公司 | Full-screen fingerprint identification method and display pixel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105493013A (en) * | 2015-09-11 | 2016-04-13 | 京东方科技集团股份有限公司 | Capacitive touch array substrate and driving method, display panel and display device |
| CN105518863A (en) * | 2015-09-15 | 2016-04-20 | 京东方科技集团股份有限公司 | Array substrate, display panel and display device |
| CN105552106A (en) * | 2016-01-29 | 2016-05-04 | 上海天马微电子有限公司 | Organic light emitting diode (OLED) panel and touch control detection method thereof |
-
2016
- 2016-07-26 CN CN201610595757.9A patent/CN106229317B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105493013A (en) * | 2015-09-11 | 2016-04-13 | 京东方科技集团股份有限公司 | Capacitive touch array substrate and driving method, display panel and display device |
| CN105518863A (en) * | 2015-09-15 | 2016-04-20 | 京东方科技集团股份有限公司 | Array substrate, display panel and display device |
| CN105552106A (en) * | 2016-01-29 | 2016-05-04 | 上海天马微电子有限公司 | Organic light emitting diode (OLED) panel and touch control detection method thereof |
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