CN108269838A - A kind of OLED display panel and display equipment - Google Patents
A kind of OLED display panel and display equipment Download PDFInfo
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- CN108269838A CN108269838A CN201810098263.9A CN201810098263A CN108269838A CN 108269838 A CN108269838 A CN 108269838A CN 201810098263 A CN201810098263 A CN 201810098263A CN 108269838 A CN108269838 A CN 108269838A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2101/00—Properties of the organic materials covered by group H10K85/00
- H10K2101/10—Triplet emission
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
- H10K50/82—Cathodes
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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
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
Abstract
This application discloses a kind of OLED display panel and a kind of display equipment, display panel includes：At least one pixel unit, the pixel unit include：Multiple organic luminous layers, the same side of the multiple organic luminous layer forms at least two cathode layers, the electrical connection corresponding with the part cathode layer at least two cathode layer of part organic luminous layer in the multiple organic luminous layer, remaining organic luminous layer in the multiple organic luminous layer is corresponding with remaining cathode layer at least two cathode layer to be electrically connected；Different cathode layers is correspondingly connected with different driving circuits.The cathode voltage VSS provided due to can only reduce the larger part organic luminous layer of the resistance into multiple organic luminous layers, without the VSS provided to multiple organic luminous layers is reduced, when therefore can reach the high gray fault-layer-phenomenon for improving OLED, the power consumption of OLED display panel will not be made increase excessive purpose.
Description
Technical field
This application involves display equipment manufacturing technology field more particularly to a kind of OLED display panels and display equipment.
Background technology
Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED) is usually by thin film transistor (TFT)
The driving of (Thin Film Transistor, TFT) driving circuit shines.Specifically, electricity is driven by the TFT for being operated in saturation region
Road direction OLED provides voltage driving OLED and shines.
In general, the condition that TFT is operated in saturation region be " | VGS-Vth| ＜ | VDS| ", wherein, VGSFor TFT grid and
Voltage between source electrode, VthFor the threshold voltage of OLED conductings, VDSThe voltage between drain electrode and source electrode for TFT.It is if discontented
Sufficient above-mentioned condition, TFT easily fall into linear zone, this electric current that can make to flow through OLED reduces, and lead to the bright of the light that OLED sends out
Degree reduces, and high gray fault-layer-phenomenon occurs.
For example, for OLED drive structure shown in figure 1A, the condition that TFT T1 are operated in saturation region is " VSS+
VOLED-(Vdata+Vth) ＜-Vth(relational expression be according to it is above-mentioned ' | VGS-Vth| ＜ | VDS| ' derive, specific derivation process category
In the prior art, it is not described in detail herein) ", it is equivalent to " VSS+VOLED＜ Vdata", wherein, VSS is the cathode voltage of OLED,
VOLEDFor the anode voltage of OLED, VdataVoltage for display data input terminal.Figure 1B show in the OLED in Figure 1A by
Electric current IVSSWith VdataBetween relationship, in fig. ib, curve 11 meets the OLED of above-mentioned condition for T1, and curve 12 is discontented with for T1
The OLED of sufficient above-mentioned condition.As can be seen that the OLED of above-mentioned condition is unsatisfactory for for T1, in V from Figure 1BdataTend to be minimum
When, IvssLess than the normal OLED that T1 meets above-mentioned condition, the brightness of OLED is caused to be less than normal brightness.
The resistance of luminous organic material is bigger, the easier generation of high gray fault-layer-phenomenon.The prior art is often by reducing VSS
Improve the high gray fault-layer-phenomenon of OLED, but to increase the electric current for flowing through OLED excessive for this mode, and OLED is caused to show
Showing the power consumption of panel increases excessively.
Invention content
The application provides a kind of OLED display panel and display equipment, to solve existing by reducing VSS to improve
The scheme of OLED high gray fault-layer-phenomenons can make the power consumption of OLED display panel increase the technical issues of excessive.
In a first aspect, a kind of OLED display panel that the application provides, including：At least one pixel unit, the pixel
Unit includes：Multiple organic luminous layers, wherein,
The same side of the multiple organic luminous layer forms at least two cathode layers, the portion in the multiple organic luminous layer
Divide organic luminous layer electrical connection corresponding with the part cathode layer at least two cathode layer, in the multiple organic luminous layer
Remaining organic luminous layer it is corresponding with remaining cathode layer at least two cathode layer electrical connection；
Different cathode layers is correspondingly connected with different driving circuits at least two cathode layer.
Optionally, the same side of the multiple organic luminous layer specifically forms two cathode layers, the multiple organic light emission
An organic luminous layer in layer is electrically connected with a cathode layer in described two cathode layers, in the multiple organic luminous layer
Remaining organic luminous layer it is corresponding with another cathode layer in described two cathode layers electrical connection.
Optionally, in the multiple organic luminous layer in an organic luminous layer of resistance maximum and described two cathode layers
The electrical connection of a cathode layer, remaining organic luminous layer in the multiple organic luminous layer in described two cathode layers
Another cathode layer corresponds to electrical connection.
Optionally, the same side of the multiple organic luminous layer specifically forms two cathode layers, the multiple organic light emission
The larger preset quantity organic luminous layer of resistance is electrically connected with a cathode layer in described two cathode layers in layer, described more
Remaining organic luminous layer electrical connection corresponding with another cathode layer in described two cathode layers in a organic luminous layer.
Optionally, the multiple organic luminous layer includes：Feux rouges organic luminous layer, green light organic luminous layer and blue light are organic
Luminescent layer.
Optionally, the same side of the multiple organic luminous layer specifically forms two cathode layers, then：
The blue light organic emissive layer is electrically connected with a cathode layer in described two cathode layers, the organic hair of feux rouges
Photosphere and green light organic luminous layer electrical connection corresponding with another cathode layer in described two cathode layers；
Alternatively, the blue light organic emissive layer and the green light organic luminous layer and the moon in described two cathode layers
Pole layer electrical connection, feux rouges organic luminous layer electrical connection corresponding with another cathode layer in described two cathode layers；
Alternatively, the blue light organic emissive layer and the feux rouges organic luminous layer and the moon in described two cathode layers
Pole layer electrical connection, green light organic luminous layer electrical connection corresponding with another cathode layer in described two cathode layers.
Optionally, the same side of the multiple organic luminous layer is specifically formed identical with the multiple organic light emission layer number
Multiple cathode layers, the multiple organic luminous layer and the multiple cathode layer one-to-one correspondence is electrically connected.
Optionally, the cathode voltage VSS that the first driving circuit is provided by the first cathode layer to the first organic luminous layer is small
In the VSS that the second driving circuit is provided by the second cathode layer to the second organic luminous layer；
Wherein, first organic luminous layer organic luminous layer larger for resistance in the multiple organic luminous layer, institute
It is the cathode layer that first organic luminous layer is correspondingly connected with to state the first cathode layer, and first driving circuit is cloudy for described first
The driving circuit that pole layer is correspondingly connected with；Second organic luminous layer is organic with described first in the multiple organic luminous layer
The different organic luminous layer of cathode layer that luminescent layer is correspondingly connected with, second cathode layer are that second organic luminous layer corresponds to
The cathode layer of connection, second driving circuit are the driving circuit that second cathode layer is correspondingly connected with.
Optionally, the pixel unit array arrangement of the OLED display panel；
Wherein, the cathode layer that the identical organic luminous layer of luminescent color is correspondingly connected in different pixels unit is serially connected company
It is logical, and it is correspondingly connected with same one drive circuit.
Second aspect, a kind of display equipment that the application provides, including：Display panel as described in relation to the first aspect.
A kind of OLED display panel and display equipment that the application provides, since the part in multiple organic luminous layers is organic
Luminescent layer is corresponding with the part cathode layer at least two cathode layers to be electrically connected, the remaining organic light emission in multiple organic luminous layers
Layer electrical connection corresponding with remaining cathode layer at least two cathode layer, and it is different at least two cathode layer
Cathode layer is correspondingly connected with different driving circuits.Therefore, the part that resistance is larger into multiple organic luminous layers can only be reduced
The cathode voltage VSS that organic luminous layer provides, without the VSS provided to multiple organic luminous layers is reduced, it is possible to change
It is apt to the high gray fault-layer-phenomenon that the corresponding OLED of organic luminous layer that resistance is larger in multiple organic luminous layers occurs.And then only make
The electric current I flowed through in part organic luminous layer in multiple organic luminous layersvssIncrease, without making in multiple organic luminous layers
The electric current I flowed throughvssIncrease so that the electric current I flowed through in entire OLED display panelvssIt is increased will not be too many, finally reach
During to the high gray fault-layer-phenomenon for improving OLED, the power consumption of OLED display panel will not be made increase excessive purpose.
Description of the drawings
Attached drawing described herein is used for providing further understanding of the present application, forms the part of the application, this Shen
Illustrative embodiments and their description please do not form the improper restriction to the application for explaining the application.In the accompanying drawings：
Figure 1A is a kind of driving circuit structure figure of OLED display panel that the prior art provides；
Figure 1B be Figure 1A in OLED in by electric current IVSSWith VdataBetween relation schematic diagram；
Fig. 2 is the structure diagram of OLED display panel provided in the prior art；
Fig. 3 A are a kind of structure diagram of specific embodiment of OLED display panel provided in an embodiment of the present invention；
Fig. 3 B are the structure diagram of another specific embodiment of OLED display panel provided in an embodiment of the present invention；
Fig. 3 C are the structure diagram of another specific embodiment of OLED display panel provided in an embodiment of the present invention；
Fig. 4 is a kind of cathode arrangement schematic diagram of OLED display panel provided by the embodiments of the present application；
Fig. 5 is another cathode arrangement schematic diagram of OLED display panel provided by the embodiments of the present application.
Specific embodiment
Purpose, technical scheme and advantage to make the application are clearer, below in conjunction with the application specific embodiment and
Technical scheme is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the application one
Section Example, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not doing
Go out all other embodiments obtained under the premise of creative work, shall fall in the protection scope of this application.
This specification first combines Figure 1A, by way of example relational expression " the VSS+V to being addressed in the application background technologyOLED-
(Vdata+Vth) ＜-Vth" derivation illustrate.
Assuming that the TFT T1 in Figure 1A are p type field effect transistor (Metal Oxide Semiconductor, MOS), then
VGS＜ 0, Vth＜ 0, VDSThe condition that ＜ 0, MOS are operated in saturation region is：
|VGS-Vth| ＜ | VDS|
=＞-VGS+Vth＜-VDS
=＞ VDS＜ VGS-Vth
=＞ VDS-VGS＜-Vth
According to Figure 1A it is found that VGS=Vdata+Vth, VDS=VSS+VOLED, substitute into " VDS-VGS＜-Vth" " VSS+V can be obtainedOLED-
(Vdata+Vth) ＜-Vth”。
It should be noted that the meaning of above-mentioned symbol "=＞ " is " being equivalent to ".
Can increase the power consumption of OLED display panel to solve the existing scheme for improving OLED high gray fault-layer-phenomenons
The technical issues of excessive, the embodiment of the present application provide a kind of OLED display panel and a kind of display equipment.
First, in order to make it easier to understand that OLED display panel provided by the embodiments of the present application can solve the prior art and deposit
The problem of principle, below with reference to the structure diagram of OLED display panel of the prior art shown in Fig. 2, to existing skill
The problem of art, Producing reason analyzed.
As shown in Fig. 2, OLED display panel of the prior art, a pixel unit includes：Feux rouges organic luminous layer
31 (R), green light organic luminous layer 32 (G) and blue light organic emissive layer 33 (B).It is appreciated that feux rouges organic luminous layer usually by
The luminous organic material that can be glowed is made, and green light organic luminous layer is usually by can be with the luminous organic material system of green light
Into blue light organic emissive layer with the luminous organic material of blue light-emitting usually by can be made.
It is worth noting that, in fig. 2, although feux rouges organic luminous layer 31, green light organic luminous layer 32 and blue light are organic
The side of luminescent layer 33 has been correspondingly formed first anode layer 21, second plate layer 22 and third anode layer 23 respectively, that is, feux rouges
Organic luminous layer 31, green light organic luminous layer 32 and blue light organic emissive layer 33 respectively with first anode layer 21, second plate layer
22 and third anode layer 23 correspond to electrical connection.But feux rouges organic luminous layer 31, green light organic luminous layer 32 and the organic hair of blue light
Photosphere 33 is electrically connected same cathode layer 40.
Applicant has found through analysis, just because of in a pixel unit in OLED display panel of the prior art
All organic luminous layers are electrically connected same cathode layer so that by the cathode voltage VSS for reducing the OLED in the pixel unit
Eliminate the high gray tomography of certain light (one that typically organic luminous layer resistance is larger in blue light, feux rouges or green light) OLED
During phenomenon, it is susceptible to the electric current I flowed through in the corresponding OLED of each organic luminous layer in entire pixel unitVSSIncrease, finally
The corresponding OLED display screen body power consumption of entire pixel unit is caused to increase the problem of excessive.
For these reasons, the embodiment of the present application provides a kind of OLED display panel, including：At least one pixel list
Member, the pixel unit include：Multiple organic luminous layers, the same side of this multiple organic luminous layer form the multiple of respective numbers
Anode layer, and this multiple organic luminous layer is electrically connected with the multiple anode layer one-to-one correspondence.What is more important, this is multiple to have
The opposite side of machine luminescent layer forms at least two cathode layers, the part organic luminous layer in the multiple organic luminous layer with it is described
Part cathode layer at least two cathode layers corresponds to electrical connection, the remaining organic luminous layer in the multiple organic luminous layer with
Remaining cathode layer at least two cathode layer corresponds to electrical connection；Also, different the moon at least two cathode layer
Pole layer is correspondingly connected with different driving circuits.
A kind of OLED display panel provided by the embodiments of the present application, since multiple organic luminous layers are correspondingly connected at least two
Therefore cathode layer, can only reduce the cathode electricity that the larger part organic luminous layer of the resistance into multiple organic luminous layers provides
VSS is pressed, without the VSS provided to multiple organic luminous layers is reduced, it is possible to improve resistance in multiple organic luminous layers
The high gray fault-layer-phenomenon that the corresponding OLED of larger organic luminous layer occurs.And then only make part in multiple organic luminous layers
The electric current I flowed through in organic luminous layervssIncrease, without the electric current I for making to flow through in multiple organic luminous layersvssIncrease, this
So that the electric current I flowed through in entire OLED display panelvssIt is increased will not be too many, so can reach improve OLED height ash
During rank fault-layer-phenomenon, the power consumption of OLED display panel will not be made increase excessive purpose.
Optionally, in a kind of specific embodiment, the opposite sides of above-mentioned multiple organic luminous layers can specifically be formed with
The identical multiple cathode layers of the multiple organic light emission layer number, the multiple organic luminous layer and the multiple cathode layer are one by one
Corresponding electrical connection.
It, can be only in this specific embodiment being electrically connected in multiple organic luminous layers with multiple cathode layers one-to-one correspondence
The cathode voltage VSS provided to the organic luminous layer for high gray fault-layer-phenomenon occur is reduced, without reducing to other organic hairs
The VSS that photosphere provides, so as to only make the electric current I flowed through in the OLED for high gray fault-layer-phenomenon occurvssIncrease is somebody's turn to do with improving
The high gray fault-layer-phenomenon of OLED, without the electric current I for making to flow through in other OLEDvssIncrease, can ensure whole to the maximum extent
The electric current I flowed through in a OLED display panelvssIt is increased will not be too many, and then can reach improve OLED high gray tomography
During phenomenon, make to the maximum extent OLED display panel power consumption increase will not be excessive purpose.
Optionally, in another embodiment specific implementation mode, the opposite side of above-mentioned multiple organic luminous layers specifically forms two
Cathode layer, an organic luminous layer in this multiple organic luminous layer are electrically connected with a cathode layer in described two cathode layers
It connects, the electricity corresponding with another cathode layer in described two cathode layers of the remaining organic luminous layer in this multiple organic luminous layer
Connection.
Since the resistance of luminous organic material is bigger, easier generation high gray fault-layer-phenomenon, therefore, more specifically,
It can make an organic luminous layer of resistance maximum and the moon in described two cathode layers in above-mentioned multiple organic luminous layers
Pole layer electrical connection, remaining organic luminous layer in the multiple organic luminous layer in described two cathode layers another is cloudy
The corresponding electrical connection of pole layer.
Alternatively, in another embodiment specific implementation mode, the opposite side of above-mentioned multiple organic luminous layers specifically forms two the moon
Pole layer can make resistance is larger in above-mentioned multiple organic luminous layers preset quantity organic luminous layer and described two cathode layers
In the electrical connection of a cathode layer, remaining organic luminous layer in the multiple organic luminous layer in described two cathode layers
Another cathode layer corresponds to electrical connection.Wherein, preset quantity can determines according to actual conditions, such as when above-mentioned multiple organic hairs
When photosphere is specially three organic luminous layers, two organic luminous layers and described two cathode layers that wherein resistance is larger can be made
In the electrical connection of a cathode layer, above-mentioned preset quantity is also determined as 2.
Under normal conditions, above-mentioned multiple organic luminous layers can include：Blue light organic emissive layer, green light organic luminous layer and
These three organic luminous layers of feux rouges organic luminous layer.Also, the resistance of blue light organic luminescent material is typically larger than the organic hair of green light
Luminescent material and red-light organic luminous material.
Therefore, in a kind of more specifically embodiment, if the same side of this multiple organic luminous layer specifically forms two
A cathode layer can be such that blue light organic emissive layer is electrically connected with a cathode layer in above-mentioned two cathode layer, the organic hair of feux rouges
Photosphere and the electrical connection corresponding with another cathode layer in described two cathode layers of green light organic luminous layer.It is appreciated that make
Blue light organic emissive layer in multiple organic luminous layers, which corresponds to, is electrically connected an independent cathode layer, in multiple organic luminous layers
Feux rouges organic luminous layer and green light organic luminous layer are correspondingly connected with another cathode layer jointly.On the one hand, due to can only reduce
The VSS provided to the blue light organic emissive layer, provides without reducing to feux rouges organic luminous layer and green light organic luminous layer
VSS, therefore can realize to the maximum extent improve Nan dian Yao high gray fault-layer-phenomenon when, OLED display panel will not be made
Power consumption increase excessive purpose.On the other hand, since feux rouges organic luminous layer and green light organic luminous layer share a cathode
Layer, therefore the process complexity of the cathode layer of processing OLED display panel can be reduced, reduce processing cost.As it can be seen that the tool
Body embodiment is a kind of more preferred embodiment.
Alternatively, in another more specifically embodiment, if the same side of this multiple organic luminous layer is specifically formed
Two cathode layers can make the blue light organic emissive layer and the green light organic luminous layer and one in described two cathode layers
A cathode layer electrical connection, feux rouges organic luminous layer electrical connection corresponding with another cathode layer in described two cathode layers.
Alternatively, in another more specifically embodiment, if the same side of this multiple organic luminous layer is specifically formed
Two cathode layers can make the blue light organic emissive layer and the feux rouges organic luminous layer and one in described two cathode layers
A cathode layer electrical connection, green light organic luminous layer electrical connection corresponding with another cathode layer in described two cathode layers.
To sum up, in the specific specific embodiment for forming two cathode layers of opposite side of above-mentioned multiple organic luminous layers
In, the arbitrary portion organic luminous layer in multiple organic luminous layers can be correspondingly connected with a cathode layer in two cathode layers, more
Remaining organic luminous layer in a organic luminous layer can be correspondingly connected with another cathode layer in two cathode layers, and the present invention is real
Example is applied not limit this.
In practical applications, the first driving circuit can be made to pass through the moon that the first cathode layer is provided to the first organic luminous layer
Pole tension VSS less than the VSS that the second driving circuit is provided by the second cathode layer to the second organic luminous layer, is improved with reaching
During the high gray fault-layer-phenomenon of OLED, the power consumption of OLED screen body will not be made increase excessive purpose.Wherein, the first organic luminous layer
The organic luminous layer larger for resistance in the multiple organic luminous layer, the first cathode layer are correspondingly connected with for the first organic luminous layer
Cathode layer, first driving circuit is the driving circuit that is correspondingly connected with of the first cathode layer；Second organic luminous layer is multiple
The organic luminous layer different from the cathode layer that the first organic luminous layer is correspondingly connected in organic luminous layer, the second cathode layer are second
The cathode layer that organic luminous layer is correspondingly connected with, the second driving circuit are the driving circuit that the second cathode layer is correspondingly connected with.
Furthermore, it is to be understood that in order to obtain better illumination effect, organic light emission layer number also may be used in the pixel unit
To be more than three, the present invention does not limit this.
Below in conjunction with the accompanying drawings, feux rouges organic luminous layer, green light organic light emission are specifically included with above-mentioned multiple organic luminous layers
For layer and blue light organic emissive layer these three organic luminous layers (namely these three sub-pixels of RGB are included with a pixel unit
For), the technical solution that each embodiment of the application provides is described in detail.And, it is assumed that blue light organic emissive layer (B) has for three
The organic luminous layer of resistance maximum in machine luminescent layer, Nan dian Yao are easiest to high gray fault-layer-phenomenon occur, need to carry out it
Improve.
It should be noted that due to the progress of science and technology, the resistance of blue light organic luminescent material is it is possible that can drop
It is low, and possibly lower than green organic luminescence and/or red-light organic luminous material, therefore, in Fig. 3 A to Fig. 3 C, Yi Jitu
In 4 and Fig. 5, using blue light organic emissive layer (B) as the organic luminous layer of resistance maximum in three organic luminous layers, it is believed that blue light
It is only a kind of example that OLED, which is easiest to high gray fault-layer-phenomenon occur, is not construed as the restriction to the application.
It should also be noted that, in the embodiment of the present application, though using a pixel unit include these three sub-pixels of RGB as
Example is introduced, but do not form the restriction of the quantity of sub-pixel, color and arrangement form to being included in a pixel unit.Example
Such as, the sub-pixel included in a pixel unit can also be：RGBY, RGBC, RGBW etc..
A is please referred to Fig.3, in one embodiment of the application, a kind of OLED display panel provided by the embodiments of the present application,
It can include：At least one pixel unit, the pixel unit can specifically include：Feux rouges organic luminous layer 31 (R), green light have
Machine luminescent layer 32 (G) and blue light organic emissive layer 33 (B).
In figure 3 a, the side of feux rouges organic luminous layer 31, green light organic luminous layer 32 and blue light organic emissive layer 33 point
It is not correspondingly formed first anode layer 21, second plate layer 22 and third anode layer 23, that is, feux rouges organic luminous layer 31, green light
Organic luminous layer 32 and blue light organic emissive layer 33 and first anode layer 21, second plate layer 22 and third anode layer 23 1 are a pair of
It should be electrically connected.
Further, in figure 3 a, feux rouges organic luminous layer 31, green light organic luminous layer 32 and blue light organic emissive layer 33
Opposite side be correspondingly formed the first cathode layer 41, the second cathode layer 42 and third cathode layer 43 respectively, that is, feux rouges organic light emission
Layer 31,33 and first cathode layer 41 of green light organic luminous layer 32 and blue light organic emissive layer, the second cathode layer 42 and third cathode
Layer 43 corresponds electrical connection.
Also, as shown in Figure 3A, the first cathode layer 41, the second cathode layer 42 and third cathode layer 43 are connected respectively not
Same driving circuit 51,52,53.
Specific embodiment shown in Fig. 3 A, due to the VSS that can be only provided by reduction to blue light organic emissive layer 33, and
The VSS to feux rouges organic luminous layer 31 and the offer of green light organic luminous layer 32 need not be reduced, realizes the height ash for improving Nan dian Yao
The purpose of rank fault-layer-phenomenon.Therefore, this mode will not make the electric current I flowed through in entire pixel unitVSSIt is increased too many, into
And when can reach the high gray fault-layer-phenomenon for improving Nan dian Yao, the power consumption of OLED screen body will not be made increase excessive purpose.
Please continue to refer to Fig. 3 B, in another embodiment of the application, a kind of OLED provided by the embodiments of the present application is shown
Show panel, can include：At least one pixel unit, the pixel unit can specifically include：Feux rouges organic luminous layer 31
(R), green light organic luminous layer 32 (G) and blue light organic emissive layer 33 (B).
In figure 3b, the side of feux rouges organic luminous layer 31, green light organic luminous layer 32 and blue light organic emissive layer 33 point
It is not correspondingly formed first anode layer 21, second plate layer 22 and third anode layer 23, that is, feux rouges organic luminous layer 31, green light
Organic luminous layer 32 and blue light organic emissive layer 33 and first anode layer 21, second plate layer 22 and third anode layer 23 1 are a pair of
It should be electrically connected.
Further, in figure 3b, feux rouges organic luminous layer 31, green light organic luminous layer 32 and blue light organic emissive layer 33
Opposite side be correspondingly formed 43 two cathode layers of the 4th cathode layer 44 and third cathode layer.Wherein, blue light organic emissive layer 33
It is electrically connected with third cathode layer 43, feux rouges organic luminous layer 31 and green light organic luminous layer 32 are electrically connected with the 4th cathode layer 44
It connects.
Also, as shown in Figure 3B, the 4th cathode layer 44 and third cathode layer 43 are connected respectively different driving circuits.
Specific embodiment shown in Fig. 3 B, due to can also only by reducing the VSS that be provided to blue light organic emissive layer 33,
Without reducing the VSS provided to feux rouges organic luminous layer 31 and green light organic luminous layer 32, the height for improving Nan dian Yao is realized
The purpose of grayscale fault-layer-phenomenon, therefore, this mode will not make the electric current I flowed through in entire pixel unitVSSIt is increased too many,
And then when can reach the high gray fault-layer-phenomenon for improving Nan dian Yao, the power consumption of OLED screen body will not be made increase excessive mesh
's.
In addition, in the embodiment shown in figure 3b, since feux rouges organic luminous layer 31 and green light organic luminous layer 32 share
One cathode layer (the 4th cathode 44), therefore the process complexity of the cathode layer of processing OLED display panel can be reduced, it reduces
Processing cost.
C is please referred to Fig.3, in another embodiment of the application, a kind of OLED display surfaces provided by the embodiments of the present application
Plate can include：At least one pixel unit, the pixel unit can specifically include：It is feux rouges organic luminous layer 31 (R), green
Light organic luminous layer 32 (G) and blue light organic emissive layer 33 (B).
In fig. 3 c, the side of feux rouges organic luminous layer 31, green light organic luminous layer 32 and blue light organic emissive layer 33 point
It is not correspondingly formed first anode layer 21, second plate layer 22 and third anode layer 23, that is, feux rouges organic luminous layer 31, green light
Organic luminous layer 32 and blue light organic emissive layer 33 and first anode layer 21, second plate layer 22 and third anode layer 23 1 are a pair of
It should be electrically connected.
Further, in fig. 3 c, feux rouges organic luminous layer 31, green light organic luminous layer 32 and blue light organic emissive layer 33
Opposite side be correspondingly formed 45 two cathode layers of the first cathode layer 41 and the 5th cathode layer.Wherein, feux rouges organic luminous layer 31
It is electrically connected with the first cathode layer 41, green light organic luminous layer 32 and blue light organic emissive layer 33 are electrically connected with the 5th cathode layer 45
It connects.
Also, as shown in Figure 3 C, the first cathode layer 41 and the 5th cathode layer 45 are connected respectively different driving circuits.
Specific embodiment shown in Fig. 3 C, due to can be only by reducing to green light organic luminous layer 32 and the organic hair of blue light
The VSS that photosphere 33 provides without reducing the VSS provided to feux rouges organic luminous layer 31, realizes the height ash for improving Nan dian Yao
The purpose of rank fault-layer-phenomenon.Therefore, this mode will not make the electric current I flowed through in entire pixel unitVSSIt is increased too many, into
And when can reach the high gray fault-layer-phenomenon for improving Nan dian Yao, the power consumption of OLED screen body will not be made increase excessive purpose.
It should be noted that in the embodiment of the present application, the structure of the corresponding driving circuit of each organic luminous layer can be with
The prior art is consistent, and the present invention does not limit this.
Optionally, in addition, a kind of OLED display panel provided by the embodiments of the present application can specifically include：Array arrangement
Multiple pixel units；Wherein, each pixel unit can include multiple organic luminous layers.Also, for each pixel list
Member：The side of multiple organic luminous layers is formed with multiple anode layers, and this multiple organic luminous layer and multiple anode layers one are a pair of
It should be electrically connected；The opposite side of this multiple organic luminous layer forms at least two cathode layers, the part in this multiple organic luminous layer
Organic luminous layer is corresponding with the part cathode layer at least two cathode layer to be electrically connected, surplus in this multiple organic luminous layer
The electrical connection corresponding with remaining cathode layer at least two cathode layer of remaining organic luminous layer；And at least two cathode
Different cathode layers is correspondingly connected with different driving circuits in layer.
Further, in the OLED display panel of the multiple pixel units for including array arrangement, for letter
Change the driving circuit structure of OLED display panel, reduce manufacture cost, luminescent color is corresponded to and identical had in different pixels unit
The cathode layer that machine luminescent layer is correspondingly connected with is serially connected connection, and is correspondingly connected with same one drive circuit.Specifically please refer to Fig.4 and scheme
Two kinds of specific embodiments shown in 5.
Fig. 4 is a kind of a kind of cathode arrangement schematic diagram of OLED display panel provided by the embodiments of the present application, such as Fig. 4 institutes
Show, a kind of OLED display panel provided in an embodiment of the present invention can include multiple pixel units 1 of array arrangement, each pixel
Unit 1 includes：Three feux rouges organic luminous layer (R), green light organic luminous layer (G) and blue light organic emissive layer (B) organic light emissions
Layer.Wherein, the feux rouges organic luminous layer in different pixels unit 1 is serially connected with green light organic luminous layer connects, and corresponding company
Connect a driving circuit, the blue light organic emissive layer in different pixels unit is serially connected connection, and be correspondingly connected with another drive
Dynamic circuit.
Fig. 5 is a kind of another cathode arrangement schematic diagram of OLED display panel provided by the embodiments of the present application, such as Fig. 5 institutes
Show, a kind of OLED display panel provided in an embodiment of the present invention can include multiple pixel units 1 of array arrangement, each pixel
Unit 1 includes：Three feux rouges organic luminous layer (R), green light organic luminous layer (G) and blue light organic emissive layer (B) organic light emissions
Layer.Wherein, the feux rouges organic luminous layer in different pixels unit 1 is serially connected with green light organic luminous layer connects, and corresponding company
Connect a driving circuit, the blue light organic emissive layer in different pixels unit is serially connected connection, and be correspondingly connected with another drive
Dynamic circuit.
In practical applications, cathode arrangement mode shown in Fig. 4 is known as RGB-stripe arrangement modes, row shown in fig. 5
Mode for cloth is V-style arrangement modes.
In a kind of actual fabrication process of OLED display panel provided by the embodiments of the present application, masking process can be used
(MASK) vapor deposition obtains each cathode layer directly in the pixel unit layer of array distribution (organic luminous layer)；It can also be first in array
Vapor deposition obtains a whole face cathode layer in the pixel unit layer of distribution, and then the one whole face cathode layer is cut using laser
It cuts, finally removes to obtain mutually independent cathode by the cathode material being cut by laser in the gap of formation using the method for etching
Layer.
In addition to above-mentioned OLED display panel, the embodiment of the present application additionally provides a kind of display equipment, which can be with
A kind of OLED display panel provided including the application any embodiment.Since the display equipment includes any implementation of the application
A kind of OLED display panel that example provides, therefore, the high gray tomography which can also obtain improvement Nan dian Yao show
As when, the power consumption of OLED screen body will not be made increase excessive advantageous effect.
In addition, it is necessary to supplementary explanation, in figure 1A, T1 to T7 represents different thin film transistor (TFT) TFT, C and is respectively
Capacitance, VDD are supply voltage.
It should be noted that term " comprising ", "comprising" or its any other variant are intended to the packet of nonexcludability
Contain so that process, method, commodity or equipment including a series of elements not only include those elements, but also including
It other elements that are not explicitly listed or further includes as this process, method, commodity or the intrinsic element of equipment.
In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including the element
Process, method, also there are other identical elements in commodity or equipment.
The foregoing is merely embodiments herein, are not limited to the application.For those skilled in the art
For, the application can have various modifications and variations.All any modifications made within spirit herein and principle are equal
Replace, improve etc., it should be included within the scope of claims hereof.
Claims (10)
1. a kind of OLED display panel, which is characterized in that including：At least one pixel unit, the pixel unit include：It is multiple
Organic luminous layer, wherein,
The same side of the multiple organic luminous layer forms at least two cathode layers, and the part in the multiple organic luminous layer has
Machine luminescent layer is corresponding with the part cathode layer at least two cathode layer to be electrically connected, surplus in the multiple organic luminous layer
The electrical connection corresponding with remaining cathode layer at least two cathode layer of remaining organic luminous layer；
Different cathode layers is correspondingly connected with different driving circuits at least two cathode layer.
2. OLED display panel according to claim 1, which is characterized in that
The same side of the multiple organic luminous layer specifically forms two cathode layers, and one in the multiple organic luminous layer has
Machine luminescent layer is electrically connected with a cathode layer in described two cathode layers, the organic hair of residue in the multiple organic luminous layer
Photosphere electrical connection corresponding with another cathode layer in described two cathode layers.
3. OLED display panel according to claim 2, which is characterized in that
An organic luminous layer of resistance maximum and a cathode in described two cathode layers in the multiple organic luminous layer
Layer electrical connection, remaining organic luminous layer in the multiple organic luminous layer with another cathode in described two cathode layers
The corresponding electrical connection of layer.
4. OLED display panel according to claim 1, which is characterized in that
The same side of the multiple organic luminous layer specifically forms two cathode layers, and resistance is larger in the multiple organic luminous layer
Preset quantity organic luminous layer be electrically connected with a cathode layer in described two cathode layers, the multiple organic luminous layer
In remaining organic luminous layer it is corresponding with another cathode layer in described two cathode layers electrical connection.
5. OLED display panel according to claim 1, which is characterized in that
The multiple organic luminous layer includes：Feux rouges organic luminous layer, green light organic luminous layer and blue light organic emissive layer.
6. OLED display panel according to claim 5, which is characterized in that the same side tool of the multiple organic luminous layer
Body forms two cathode layers, then：
The blue light organic emissive layer is electrically connected with a cathode layer in described two cathode layers, the feux rouges organic luminous layer
With green light organic luminous layer electrical connection corresponding with another cathode layer in described two cathode layers；
Alternatively, the blue light organic emissive layer and the green light organic luminous layer and a cathode layer in described two cathode layers
Electrical connection, feux rouges organic luminous layer electrical connection corresponding with another cathode layer in described two cathode layers；
Alternatively, the blue light organic emissive layer and the feux rouges organic luminous layer and a cathode layer in described two cathode layers
Electrical connection, green light organic luminous layer electrical connection corresponding with another cathode layer in described two cathode layers.
7. OLED display panel according to claim 1, which is characterized in that
The same side of the multiple organic luminous layer specifically forms the multiple cathodes identical with the multiple organic light emission layer number
Layer, the multiple organic luminous layer are electrically connected with the multiple cathode layer one-to-one correspondence.
8. OLED display panel according to claim 1, which is characterized in that
The cathode voltage VSS that first driving circuit is provided by the first cathode layer to the first organic luminous layer, less than the second driving
The VSS that circuit is provided by the second cathode layer to the second organic luminous layer；
Wherein, first organic luminous layer organic luminous layer larger for resistance in the multiple organic luminous layer, described the
One cathode layer is the cathode layer that first organic luminous layer is correspondingly connected with, and first driving circuit is first cathode layer
The driving circuit being correspondingly connected with；Second organic luminous layer be the multiple organic luminous layer in first organic light emission
The different organic luminous layer of the cathode layer that is correspondingly connected with of layer, second cathode layer are correspondingly connected with for second organic luminous layer
Cathode layer, second driving circuit is the driving circuit that is correspondingly connected with of second cathode layer.
9. OLED display panel according to claim 1, which is characterized in that the pixel unit array arrangement；
Wherein, the cathode layer that the identical organic luminous layer of luminescent color is correspondingly connected in different pixels unit is serially connected connection,
And it is correspondingly connected with same one drive circuit.
10. a kind of display equipment, which is characterized in that including：Such as claim 1-9 any one of them display panels.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108877660A (en) * | 2018-08-06 | 2018-11-23 | 京东方科技集团股份有限公司 | A kind of driving method of driving circuit, display device and display device |
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| CN106711182A (en) * | 2017-01-03 | 2017-05-24 | 昆山国显光电有限公司 | OLED (Organic Light Emitting Diode) screen body and repairing method of OLED screen body |
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| CN1507614A (en) * | 2001-05-14 | 2004-06-23 | ���ǵ�����ʽ���� | Organic electroluminescent device and method for fabricating thereof |
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