CN109599426A - Display panel and display device - Google Patents
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- CN109599426A CN109599426A CN201811507586.5A CN201811507586A CN109599426A CN 109599426 A CN109599426 A CN 109599426A CN 201811507586 A CN201811507586 A CN 201811507586A CN 109599426 A CN109599426 A CN 109599426A
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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
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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
- H10K59/80—Constructional details
- H10K59/87—Passivation; Containers; Encapsulations
- H10K59/871—Self-supporting sealing arrangements
- H10K59/8723—Vertical spacers, e.g. arranged between the sealing arrangement and the OLED
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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
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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
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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
- H10K59/80—Constructional details
- H10K59/805—Electrodes
- H10K59/8052—Cathodes
- H10K59/80521—Cathodes characterised by their shape
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Abstract
The embodiment of the invention provides a kind of display panel and display devices, are related to field of display technology, to the mutual cross-interference issue for solving to occur between the sub-pixel that OLED display panel is different when being shown in the prior art.The display panel includes the first substrate being oppositely arranged and the second substrate, and positioned at first substrate towards multiple luminescent devices of the side of the second substrate；Luminescent device includes the first electrode being stacked, luminescent layer, common layer and second electrode；Common layer is located at luminescent layer towards the side of first electrode and/or second electrode；The display panel further includes auxiliary electrode, and auxiliary electrode is contacted with the common layer between two neighboring luminescent layer.
Description
[technical field]
The present invention relates to field of display technology more particularly to a kind of display panel and display devices.
[background technique]
Organic light emission (Organic Light-Emitting Diode, hereinafter referred to as OLED) display panel has because of it
Actively shine, high contrast, no angle limit many advantages, such as and be widely used in field of display technology.
In OLED display panel, in order to enhance migration and the combined efficiency of carrier, it will usually in the electricity of OLED device
The functional membranes such as electron transfer layer, electron injecting layer, hole transmission layer and hole injection layer are set between pole and luminescent layer
Layer.But it since these functional film layers are the whole face structure for covering all organic luminescent devices usually in display panel, leads
It causes when display panel is shown, the carrier of corresponding different OLED device is normally from respective cathode and/or sun
Pole there is also carrier by above-mentioned functional film layer different to except the process of corresponding luminescent layer vertical migration
Between OLED device the case where lateral transfer, that is, lateral leakage current occur, lead to the son different when display panel is shown
Occur the problem of mutual crosstalk between pixel, for example, it may be possible to the phenomenon that sub-pixel for emitting light that this should not shine occur, influences
Display effect.
[summary of the invention]
In view of this, the embodiment of the invention provides a kind of display panel and display devices, to solve in the prior art
The mutual cross-interference issue occurred between the OLED display panel sub-pixel different when being shown.
On the one hand, the embodiment of the invention provides a kind of display panels, comprising:
The first substrate and the second substrate being oppositely arranged；
Multiple luminescent devices, the luminescent device are located at first substrate towards the side of the second substrate；The luminescent device
Including the first electrode being stacked, luminescent layer, common layer and second electrode；The common layer is located at luminescent layer described in
The side of first electrode and/or the second electrode；
Auxiliary electrode, the auxiliary electrode connect negative potential, and the auxiliary electrode be located at two neighboring described shine
Common layer contact between layer.
On the other hand, the embodiment of the invention also provides a kind of display device, the display device includes above-mentioned display
Panel.
Display panel provided in an embodiment of the present invention and display device, by setting be located at two neighboring luminescent layer it
Between common layer contact auxiliary electrode, and be electrically connected auxiliary electrode with negative potential, in this way, in the work of the display panel
In the process, lateral leakage current is occurring, that is, the carrier of some luminescent device from the luminescent device by common layer to remaining
When luminescent device lateral transfer, the carrier of these lateral transfers can be led via the auxiliary electrode of above-mentioned connection negative potential
It walks, to avoid migrating carrier between different luminescent devices, that is, avoid the occurrence of each luminescent device at work
Mutual cross-interference issue, improve the display effect of display panel.
[Detailed description of the invention]
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill of field, without creative efforts, it can also be obtained according to these attached drawings others
Attached drawing.
Fig. 1 is a kind of schematic cross-section of display panel in the prior art；
Fig. 2 is a kind of schematic top plan view of display panel provided by the embodiment of the present invention；
Fig. 3 is a kind of schematic cross-section of the Fig. 2 along AA '；
Fig. 4 is the schematic top plan view of another display panel provided in an embodiment of the present invention；
Fig. 5 is another schematic cross-section of the Fig. 2 along AA '；
Fig. 6 is another schematic cross-section of Fig. 2 along AA '；
Fig. 7 is another schematic cross-section of Fig. 2 along AA '；
Fig. 8 is the schematic top plan view of another display panel provided in an embodiment of the present invention；
Fig. 9 is a kind of enlarged diagram in Fig. 8 at corresponding 4 × 4 sub-pixel size positions；
Figure 10 is a kind of schematic cross-section of the Fig. 9 along BB '；
Figure 11 is another enlarged diagram in Fig. 8 at corresponding 4 × 4 sub-pixel size positions；
Figure 12 is a kind of schematic cross-section of the Figure 11 along CC '
Figure 13 is another schematic cross-section of the Fig. 9 along BB '；
Figure 14 is another schematic cross-section of Fig. 9 along BB '；
Figure 15 is a kind of schematic diagram of display device provided in an embodiment of the present invention.
[specific embodiment]
For a better understanding of the technical solution of the present invention, being retouched in detail to the embodiment of the present invention with reference to the accompanying drawing
It states.
It will be appreciated that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Based on the embodiments of the present invention, institute obtained by those of ordinary skill in the art without making creative efforts
There are other embodiments, shall fall within the protection scope of the present invention.
The term used in embodiments of the present invention is only and to be not intended to limit merely for for the purpose of describing particular embodiments
The system present invention.The embodiment of the present invention and the "an" of singular used in the attached claims, " described " and
"the" is also intended to including most forms, unless the context clearly indicates other meaning.
It should be appreciated that term "and/or" used herein is only a kind of incidence relation for describing affiliated partner, table
Show there may be three kinds of relationships, for example, A and/or B, can indicate: individualism A exists simultaneously A and B, individualism B this
Three kinds of situations.In addition, character "/" herein, typicallys represent the relationship that forward-backward correlation object is a kind of "or".
It will be appreciated that though auxiliary electrode may be described using term first, second etc. in embodiments of the present invention,
But these auxiliary electrodes should not necessarily be limited by these terms.These terms are only used to for auxiliary electrode being distinguished from each other out.For example, not
In the case where being detached from range of embodiment of the invention, the first auxiliary electrode can also be referred to as the second auxiliary electrode, similarly, the
Two auxiliary electrodes can also be referred to as the first auxiliary electrode.
As shown in FIG. 1, FIG. 1 is a kind of schematic cross-sections of display panel in the prior art, wherein the display panel packet
Include multiple organic luminescent devices, in Fig. 1 by taking the first organic luminescent device 1 ' and the second organic luminescent device 2 ' as an example, Mei Geyou
Machine luminescent device includes the anode 11 ' being stacked, luminescent layer 10 ' and cathode 12 '.It needs to shine in organic luminescent device
When, electric signal is provided to the anode 11 ' and cathode 12 ' of the organic luminescent device 1 ', in the pressure difference of anode 11 ' and cathode 12 '
Under effect, the hole that anode 11 ' generates is injected into luminescent layer 10 ', and the electronics that cathode 12 ' generates is also injected into luminescent layer
In 10 ', electrons and holes compound generation exciton in luminescent layer 10 ', exciton radiation transits to ground state from excitation state, so that hair
The light of the sending corresponding color of photosphere 10 '.Organic luminescent device do not need shine when, the anode 11 ' of the organic luminescent device and
Pressure difference between cathode 12 ' is 0, and the carrier including electrons and holes will not be from anode 11 ' and 12 ' Xiang Faguang of cathode
Layer 10 ' is mobile, correspondingly, not having the generation of exciton in luminescent layer 10 ', so that luminescent layer 10 ' be made not shine.
Currently, in order to improve the migration of carrier and combined efficiency, as shown in Figure 1, it will usually in anode 11 ' and shine
Setting hole injection layer 13 ' and hole transmission layer 14 ' between layer 10 ', and electronics is set between cathode 12 ' and luminescent layer 10 '
Implanted layer 15 ' and electron transfer layer 16 '.But due to above-mentioned including hole injection layer 13 ', hole transmission layer 14 ', electronics note
Entering layer 15 ' and the functional film layer including electron transfer layer 16 ' is usually the planar structure for covering each organic luminescent device, because
This, if at a time, needing that the first organic luminescent device 1 ' is made to be in luminance, makes second organic as shown in Fig. 1
Luminescent device 2 ' is in non-light emitting state, then anode 11 ' and cathode included by first organic luminescent device 1 ' of moment
12 ' receive electric signal, and anode 11 ' included by the second organic luminescent device 2 ' and cathode 12 ' do not receive electric signal.With first
The corresponding hole injection layer 13 ' of organic luminescent device 1 ', hole transmission layer 14 ', electron injecting layer 15 ' and electron transfer layer 16 '
In there is carrier to pass through, migration in the luminescent layer 10 ' for including to the first organic luminescent device 1 '.But due to first organic hair
Such as hole injection layer 13 ', hole transmission layer 14 ', electron injecting layer between optical device 1 ' and the second organic luminescent device 2 '
15 ' are interconnected with the public film layer including electron transfer layer 16 ', and therefore, carrier can have through above-mentioned public film layer from first
Machine luminescent device 1 ' is migrated to the second organic luminescent device 2 ', and the second organic luminescent device 2 ' for causing this that should not shine can also
Luminous situation can occur, that is, the first organic luminescent device 1 ' and the second organic luminescent device 2 ' is made asking for mutual crosstalk occur
Topic.
Based on this, the embodiment of the invention provides a kind of display panels, and as shown in Figures 2 and 3, Fig. 2 is that the present invention is implemented
A kind of schematic top plan view for display panel that example provides, Fig. 3 are a kind of schematic cross-section of the Fig. 2 along AA ', wherein the display surface
Plate includes the first substrate 1 being oppositely arranged and the second substrate 2, and positioned at first substrate 1 towards the side of the second substrate 2
Luminescent device 3.Specifically, luminescent device 3 includes the first electrode 31 being stacked, luminescent layer 30, common layer 33 and the second electricity
Pole 32；Common layer 33 is located at luminescent layer 30 towards the side of first electrode 31 and/or second electrode 32；The display panel also wraps
Include auxiliary electrode 4, auxiliary electrode 4 connects negative potential, and auxiliary electrode 4 and public between two neighboring luminescent layer 30
Layer 33 contacts.
Illustratively, above-mentioned first electrode 31 can be anode, and second electrode 32 can be cathode, correspondingly, being located at hair
The common layer 33 of photosphere 30 towards the side of first electrode 31 may include hole injection layer and hole transmission layer, is located at and shines
Common layer 33 of the layer 30 towards the side of second electrode 32 may include electron injecting layer and electron transfer layer.
Display panel provided in an embodiment of the present invention, by being arranged and public between two neighboring luminescent layer 30
The auxiliary electrode 4 of 33 contact of layer, and it is electrically connected auxiliary electrode 4 with negative potential, in this way, in the course of work of the display panel
In, lateral leakage current is occurring, that is, the carrier of some luminescent device is sent out by common layer 33 to remaining from the luminescent device
When optical device lateral transfer, the carrier of these lateral transfers can be led via the auxiliary electrode 4 of above-mentioned connection negative potential
It walks, is the flow direction signal of carrier as shown in arrow direction in Fig. 3, to avoid making carrier in different luminescent devices
Between migrate, that is, avoid the occurrence of the mutual cross-interference issue of each luminescent device at work, improve display panel display effect
Fruit.
Illustratively, as shown in figure 3, above-mentioned auxiliary electrode 4 orthographic projection of plane and luminescent layer 30 where display panel
The orthographic projection of plane where display panel does not overlap, so that auxiliary electrode 4 be avoided to influence the light that luminescent layer 30 projects, protects
That demonstrate,proves luminescent layer 30 normally goes out light.
Illustratively, as shown in Figures 2 and 3, above-mentioned display panel further includes support column 5；Support column 5 is located at the first base
Between plate 1 and the second substrate 2；The orthographic projection of auxiliary electrode 4 and the plane where display panel of support column 5 is overlapping.The present invention is real
Example is applied by the way that support column 5 is arranged in display panel, in the luminescent layer 30 being deposited in display panel, can use the support
Column 5 is come the mask plate that needs are used when supporting vapor deposition.Also, the embodiment of the present invention is by being arranged support column 5 two neighboring
Between luminescent layer 30, avoid that support column 5 is irradiant to luminescent layer 30 to be blocked.On this basis, the embodiment of the present invention is logical
Crossing keeps the projection of auxiliary electrode 4 and the plane where display panel of support column 5 overlapping, is guaranteeing auxiliary electrode 4 and support column 5
Normally going out on the basis of light for luminescent layer 30 is not influenced, can be avoided the space setting between two neighboring luminescent layer 30
It is excessive, so that making the aperture opening ratio of the display panel will not reduce.
Illustratively, on the basis of guaranteeing that auxiliary electrode 4 and luminescent layer 30 be not overlapping, auxiliary electrode 4 can be designed
For various shapes.For example, as shown in Figure 2, wherein the shape of auxiliary electrode 4 is latticed.Alternatively, as shown in figure 4, Fig. 4 is
The schematic top plan view of another kind display panel provided in an embodiment of the present invention, wherein the shape of auxiliary electrode 4 can also design
For strip.It is of course also possible to the shape of auxiliary electrode 4 is designed as strip and latticed mixing, as long as guaranteeing auxiliary electrode
4 is overlapping with luminescent layer 30, and those skilled in the art can be adjusted correspondingly according to different design requirements.
Illustratively, in the base for guaranteeing that auxiliary electrode 4 is contacted with the common layer 33 between two neighboring luminescent layer 30
On plinth, position of the auxiliary electrode 4 in the display panel can there are many design, for example, can make auxiliary electrode 4 with it is public
Layer 33 can also be such that auxiliary electrode 4 flanks with common layer 33 close to the one of first substrate 1 close to a side contacts of the second substrate 2
Touching, is explained individually below.
As shown in figure 3, when setting auxiliary electrode 4 to common layer 33 close to a side contacts of the second substrate 2, this
Inventive embodiments can graphically set strip or block structure for second electrode 32, that is, second electrode 32 is only made to cover phase
The luminescent layer 30 answered makes auxiliary electrode 4 between adjacent luminescent layer 30, that is to say, that makes auxiliary electrode 4 and the second electricity
Pole 32 is mutually not attached to.At this point, auxiliary electrode 4 and the signal in second electrode 32 are mutually indepedent, it therefore, can be by auxiliary electrode 4
Be connected at current potential more lower than the current potential of second electrode 32, illustratively, can make the current potential of auxiliary electrode 4-7V~-
Between 3V, make existing low level signal end VGL (not shown) or reference voltage signal end in auxiliary electrode 4 and display panel
Vref is (not shown) to be connected, preferably to improve lateral current leakage phenomenon.
On the basis of making second electrode 32 only cover corresponding luminescent layer 30, illustratively, as shown in Fig. 5, Fig. 5 is
Another schematic cross-section of the Fig. 2 along AA ', wherein auxiliary electrode 4 includes the first auxiliary electrode 41 and the second auxiliary electrode 42,
First auxiliary electrode 41 and the electrical connection of the second auxiliary electrode 42；Second auxiliary electrode 42 is with common layer 33 close to the second substrate 2
One side contacts, alternatively, the second auxiliary electrode 42 can be made to be pressed into common layer 33 by applying pressure to the second auxiliary electrode 42
It is contacted with common layer 33；Wherein, the positive throwing of the first auxiliary electrode 41 and the second auxiliary electrode 42 plane where display panel
Shadow and the orthographic projection of the plane where display panel of luminescent layer 30 do not overlap.When lateral current leakage phenomenon occurs, carrier can
Current potential lower is flowed to pass sequentially through the second auxiliary electrode 42 and the first auxiliary electrode 41, as shown in arrow direction in Fig. 5 i.e.
Illustrate for the flow direction of carrier, migrated between different luminescent devices 3 to avoid carrier, that is, avoids the occurrence of each shine
The mutual cross-interference issue of device 3 at work, improves the display effect of display panel.
Illustratively, which can be multiplexed with support column 5, that is, in embodiments of the present invention, make
Two auxiliary electrodes 42 are applied not only to the carrier of conduction lateral transfer, are also used to need to use when supporting vapor deposition luminescent layer 30
Mask plate (not shown), so to avoid be arranged between two neighboring luminescent layer 30 excessive space be respectively used to place branch
Dagger 5 and the second auxiliary electrode 42, so that the aperture opening ratio of the display panel will not reduce.Illustratively, above-mentioned second auxiliary electricity
The shape of pole 42 includes sphere, spheroid, cone, any one in cylinder.Illustratively, cone may include cone,
Triangular pyramids etc., it is not limited in the embodiment of the present invention.
Above to be patterned to second electrode 32, that is, for so that second electrode 32 is only covered corresponding luminescent layer 30
The structure of display panel provided in an embodiment of the present invention is described, it, can be in fact, in embodiments of the present invention
It sets second electrode 32 to cover the planar structure of each luminescent device 3, illustratively, as shown in fig. 6, Fig. 6 is the edge Fig. 2
Another schematic cross-section of AA ', wherein second electrode 32 is the planar structure for covering each luminescent device 3, in this situation
Under, auxiliary electrode 4 is electrically connected by the embodiment of the present invention with second electrode 32, can reduce the resistance of second electrode 32.If second
Resistance on electrode 32 is larger, when second electrode 32 is powered, biggish pressure drop will be generated in second electrode 32, thus mentioning
In the case that the voltage of supply second electrode 32 is certain, the voltage received at the different location of second electrode 32 will lead to not
Together.For example, when providing voltage to second electrode 32 from the driving chip (not shown) for the rim area for being located at display panel, by
It is larger in the pressure drop in second electrode 32, will lead in second electrode 32 at the position of rim area the voltage that receives compared with
Height, and in second electrode 32 be located at display panel middle position, i.e., the voltage received at the position far from rim area compared with
It is low, so will lead to display when occur display panel intermediate region it is partially dark, the partially bright phenomenon in neighboring area, that is, occur
Show uneven situation.The embodiment of the present invention can not only be utilized auxiliary by being electrically connected auxiliary electrode 4 with second electrode 32
It helps electrode 4 to improve the mutual cross-interference issue occurred between different luminescent devices 3, but also can reduce second electrode 32
Resistance improves the display homogeneity of display panel everywhere to reduce the pressure drop of second electrode 32 at work.
On the basis of being set as second electrode 32 to cover the planar structure of each luminescent device 3, with above-mentioned by the second electricity
It is identical that the patterning of pole 32 is set as the case where only covering corresponding luminescent layer 30, can also set auxiliary electrode 4 to including the
One auxiliary electrode 41 and the second auxiliary electrode 42, illustratively, as shown in fig. 7, Fig. 7 is that Fig. 2 shows along another section of AA '
It is intended to, wherein auxiliary electrode 4 includes the first auxiliary electrode 41 and the second auxiliary electrode 42 of electrical connection, at this point, auxiliary electrode 4
Specific structure it is similar with situation shown in above-mentioned Fig. 5, details are not described herein again for something in common.The difference is that at this point, second
Auxiliary electrode 42 is contacted with second electrode 32, can reduce the resistance of second electrode 32, makes second electrode 32 in display panel work
Pressure drop when making reduces, and plays the effect for improving the display homogeneity of display panel everywhere.
Illustratively, as shown in figure 8, the vertical view that Fig. 8 is another display panel provided in an embodiment of the present invention is illustrated
Figure, wherein display panel provided in an embodiment of the present invention can also include the touch control electrode layer 6 for being formed in the second substrate, touch-control
The setting of electrode layer 6 can make the display panel realize touch control operation, enrich the use function of the display panel.
Specifically, as shown in figure 8, touch control electrode layer 6 may include touch-driven electrode 601 and touch-control sensing electrode
602, when carrying out the judgement of position of touch, by providing touch drive signal to touch-driven electrode 601, and detect touch-control
The variation of 602 output signal of induction electrode, to judge the generation position of touch-control.
Illustratively, in order to improve the translucency of touch control electrode layer 6, it will usually drive the touch-control in touch control electrode layer 6
Electrode 601 and/or touch-control sensing electrode 602 are designed to latticed or strip, as shown in figure 9, Fig. 9 is corresponding 4 in Fig. 8
A kind of enlarged diagram at × 4 sub-pixel size positions, wherein touch control electrode layer 6 includes spaced sub- touch-control electricity
Pole 61；There are gaps between two neighboring sub- touch control electrode 61, to improve the translucency of the touch control electrode layer 6.
By auxiliary electrode 4 be set as with common layer 33 towards the second substrate 2 a side contacts when, in actual fabrication,
Above-mentioned auxiliary electrode 4 can be made to be formed in the second substrate 2, and auxiliary electrode 4 and touch control electrode layer 6 is made to be located at different layers, specifically
, as shown in Figure 10, Figure 10 is a kind of schematic cross-section of the Fig. 9 along BB ', wherein between auxiliary electrode 4 and touch control electrode layer 6
It further include insulating layer 7.In the actual production of touch-control display panel, usually by touch control electrode layer 6 and luminescent device 3 in difference
Substrate on be fabricated separately after the completion of, then two pieces of substrates are bonded to complete the production of touch-control display panel.Therefore, originally
Inventive embodiments are by the way that auxiliary electrode 4 and touch control electrode layer 6 to be both formed in the second substrate 2, in actual technical process
In, it is only necessary to the processing procedure of auxiliary electrode 4 is added after the completion of prepared by touch control electrode layer 6, simple process is easily realized.
It is that different layers are located to the display panel including touch control electrode layer 6 with touch control electrode layer 6 and auxiliary electrode 4 above
The introduction of progress, in fact, when production includes the display panel of touch control electrode layer 6, it can also be by touch control electrode layer 6 and auxiliary
Electrode 4 is helped to be set to same film layer, as is illustrated by figs. 11 and 12, Figure 11 is to correspond at 4 × 4 sub-pixel size positions in Fig. 8
Another enlarged diagram, Figure 12 be Figure 11 along CC ' a kind of schematic cross-section, wherein between above-mentioned auxiliary electrode 4 includes
Every the sub- auxiliary electrode 40 of setting；Touch control electrode layer 6 includes spaced sub- touch control electrode 61；Sub- auxiliary electrode 40 and son
61 same layer of touch control electrode is alternately arranged；The sub- touch control electrode 61 of adjacent two passes through 62 connections of building bridge；Bridge formation 62 and sub- touch-control electricity
Pole 61 is located at different layers, specifically, building bridge between 62 and sub- touch control electrode 61 further includes insulating layer 7, includes in insulating layer 7
Hole 70, bridge formation 62 are connect with sub- touch control electrode 61 by via hole 70.
It should be noted that being only so that touch control electrode layer 6 is set to the second substrate 2 towards shown in Figure 10 and Figure 12
The side of one substrate 1 sets touch-control display panel to the signal of In-cell structure progress, in fact, as shown in figure 13,
Figure 13 is another schematic cross-section of the Fig. 8 along BB ', and the embodiment of the present invention can also set On- for the touch-control display panel
Cell or Out-cell structure, that is, touch control electrode layer 6 is set to the side that the second substrate 2 deviates from first substrate 1.
In addition, it is necessary to explanation, when production includes the display panel of touch control electrode layer 6, Figure 10, Figure 12 and Figure 13
Shown in structure be only illustrate, in fact, pattern structure can also be set by second electrode 32, that is, only make second electrode
32 only cover corresponding luminescent layer 30, are not attached to second electrode 32 with auxiliary electrode 4.Also, auxiliary electrode 4 can also be made
It is set as including the first auxiliary electrode and the second auxiliary electrode interconnected, and the second auxiliary electrode is enabled to be multiplexed with support column.
That is, whether second electrode 32 patterns, whether auxiliary electrode 4 is set as including that the first auxiliary electrode 41 and second is auxiliary
Help whether electrode 42 and display panel include touch control electrode layer, whether touch control electrode layer is arranged with 4 same layer of auxiliary electrode, this
A little features can be freely combined, and the embodiment of the present invention is not enumerated its different combination one by one herein, but at this
Within the spirit and principle of inventive embodiments, it should be included in using the scheme that the various combination to above-mentioned different characteristic is formed
Within the scope of protection of the invention.
Above by taking auxiliary electrode 4 and common layer 33 are close to a side contacts of the second substrate 2 as an example to the embodiment of the present invention into
Introduction of having gone such as is schemed in fact, auxiliary electrode 4 may be arranged as the side contacts with common layer 33 close to first substrate 1
Shown in 14, Figure 14 is another schematic cross-section of Fig. 8 along BB ', wherein auxiliary electrode 4 and common layer 33 are close to first substrate
1 side contacts, specifically, auxiliary electrode 4 can be arranged with 31 same layer of first electrode, in this way when making the display panel,
Auxiliary electrode 4 can be made to be made with first electrode 31 of same procedure.It only need to be in follow-up process in first electrode
Luminescent layer 30 is deposited in 31 corresponding positions, and luminescent layer 30 is not deposited in 4 corresponding position of auxiliary electrode.
It should be understood that when auxiliary electrode 4 is located at common layer 33 close to the side of first substrate 1, it can also be at this
In display panel by it is above-mentioned auxiliary electrode 4 is set to side of the common layer 33 far from first substrate 1 in the way of touch-control is set
Electrode layer 6, details are not described herein again.
Illustratively, the material of above-mentioned auxiliary electrode 4 and touch control electrode layer 6 can choose metal or transparent metal oxide
Object, optionally, metal material can select any one in copper, silver, titanium etc..Transparent metal oxide material can be with
Select any one in tin indium oxide, indium zinc oxide, indium gallium zinc etc..In the production of actual display panel
The material of Cheng Zhong, auxiliary electrode 4 and touch control electrode layer 6 may be the same or different, and the embodiment of the present invention does not limit this
It is fixed.For example, in embodiments of the present invention, in order to enhance the translucency of touch control electrode layer 6, and reducing the electricity of touch control electrode layer 6
Resistance can select nanometer silver wire material or the nano material of other light-permeables to make touch control electrode layer 6, to avoid shadow
That rings each luminescent device 3 normally goes out light, and guarantees touch-control sensitivity.
The embodiment of the invention also provides a kind of display devices, and as shown in figure 15, Figure 15 is provided in an embodiment of the present invention
A kind of schematic diagram of display device, wherein the display device includes above-mentioned display panel 100.Wherein, wherein display panel
100 specific structure is described in detail in the above-described embodiments, and details are not described herein again.Certainly, shown in figure 15 aobvious
Showing device is only schematically illustrate, the display device can be for example mobile phone, tablet computer, laptop, electric paper book or
Any electronic equipment having a display function such as television set.
Display device provided in an embodiment of the present invention, by being arranged in display panel and being located at two neighboring luminescent layer
Between common layer contact auxiliary electrode, and be electrically connected auxiliary electrode with negative potential, in this way, in the work of the display panel
During work, lateral leakage current is occurring, that is, the carrier of some luminescent device from the luminescent device by common layer to remaining
Luminescent device lateral transfer when, the carrier of these lateral transfers can be via the auxiliary electrode of above-mentioned connection negative potential
It guides, to avoid migrating carrier between different luminescent devices, that is, avoid the occurrence of each luminescent device and working
When mutual crosstalk phenomenon, improve the display effect of display device.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (16)
1. a kind of display panel characterized by comprising
The first substrate and the second substrate being oppositely arranged；
Multiple luminescent devices, the luminescent device are located at the first substrate towards the side of the second substrate；It is described to shine
Device includes the first electrode being stacked, luminescent layer, common layer and second electrode；The common layer is located at the luminescent layer court
To the side of the first electrode and/or the second electrode；
Auxiliary electrode, the auxiliary electrode connect negative potential, and the auxiliary electrode be located at the two neighboring luminescent layer it
Between the common layer contact.
2. display panel according to claim 1, which is characterized in that the auxiliary electrode is put down where the display panel
Orthographic projection of the orthographic projection in face with the luminescent layer in plane where the display panel does not overlap.
3. display panel according to claim 2, which is characterized in that the display panel further includes support column；The branch
Dagger is between the first substrate and the second substrate；The auxiliary electrode and the support column are in the display panel
The orthographic projection of place plane is overlapping.
4. display panel according to claim 2, which is characterized in that the shape of the auxiliary electrode include it is latticed and/
Or strip.
5. display panel according to claim 2, which is characterized in that the auxiliary electrode and the common layer are close to described
One side contacts of the second substrate.
6. display panel according to claim 5, which is characterized in that the auxiliary electrode is electrically connected with the second electrode
It connects.
7. display panel according to claim 5, which is characterized in that the mutual not phase of the auxiliary electrode and the second electrode
Even.
8. display panel according to claim 6 or 7, which is characterized in that the auxiliary electrode includes the first auxiliary electrode
With the second auxiliary electrode, first auxiliary electrode and second auxiliary electrode electrical connection；Second auxiliary electrode and institute
State common layer contact；Second auxiliary electrode is in the orthographic projection of plane where the display panel with the luminescent layer described
The orthographic projection of plane does not overlap where display panel.
9. display panel according to claim 8, which is characterized in that second auxiliary electrode is multiplexed with the support
Column.
10. display panel according to claim 8, which is characterized in that the shape of second auxiliary electrode include sphere,
Any one in cone, cylinder.
11. display panel according to claim 2, which is characterized in that the display panel further includes touch control electrode layer, institute
It states touch control electrode layer and is formed in the second substrate.
12. display panel according to claim 11, which is characterized in that the auxiliary electrode is formed in second base
Plate, and, the auxiliary electrode and the touch control electrode layer are located at different layers.
13. display panel according to claim 11, which is characterized in that the auxiliary electrode includes that spaced son is auxiliary
Help electrode；The touch control electrode layer includes spaced sub- touch control electrode；The sub- auxiliary electrode and the sub- touch control electrode
Same layer is alternately arranged；The sub- touch control electrode of adjacent two passes through connection of building bridge；
The bridge formation is located at different layers with the sub- touch control electrode, and the bridge formation is connect with the sub- touch control electrode by via hole.
14. display panel according to claim 2, which is characterized in that the auxiliary electrode and the first electrode same layer
The side contacts of setting, the auxiliary electrode and the common layer close to the first substrate.
15. display panel according to claim 1, which is characterized in that the material of the auxiliary electrode include metal or thoroughly
Bright metal oxide.
16. a kind of display device, which is characterized in that the display device includes the described in any item display surfaces of claim 1-15
Plate.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110286803A (en) * | 2019-06-28 | 2019-09-27 | 上海天马有机发光显示技术有限公司 | Display panel and display device |
| CN110610972A (en) * | 2019-09-19 | 2019-12-24 | 京东方科技集团股份有限公司 | Display substrate, preparation method thereof and display device |
| CN111710704A (en) * | 2020-06-29 | 2020-09-25 | 云谷（固安）科技有限公司 | Display panel and display device |
| CN111863929A (en) * | 2020-08-28 | 2020-10-30 | 京东方科技集团股份有限公司 | Display substrate, preparation method thereof and display device |
| CN111863918A (en) * | 2020-07-29 | 2020-10-30 | 京东方科技集团股份有限公司 | Display back plate and manufacturing method thereof, display panel and display device |
| CN114023910A (en) * | 2021-11-05 | 2022-02-08 | 武汉天马微电子有限公司 | Display panel and display device |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623485A (en) * | 2011-01-25 | 2012-08-01 | 索尼公司 | Organic EL display and electronic apparatus |
| CN105336874A (en) * | 2015-12-08 | 2016-02-17 | 昆山工研院新型平板显示技术中心有限公司 | Organic light emitting diode, driving method thereof and organic light emitting display screen |
| CN106057850A (en) * | 2015-04-08 | 2016-10-26 | 佳能株式会社 | Light emitter, image forming system, and exposure unit |
| CN107346778A (en) * | 2017-07-07 | 2017-11-14 | 深圳市华星光电半导体显示技术有限公司 | WOLED display panels and display device |
| CN107634087A (en) * | 2017-10-27 | 2018-01-26 | 京东方科技集团股份有限公司 | A kind of display panel and display device |
| CN107968106A (en) * | 2017-05-11 | 2018-04-27 | 广东聚华印刷显示技术有限公司 | OLED display panel and preparation method thereof and application |
| CN108123049A (en) * | 2016-11-30 | 2018-06-05 | 乐金显示有限公司 | Organic electroluminescence display panel |
| CN108122943A (en) * | 2016-11-30 | 2018-06-05 | 乐金显示有限公司 | Organic electroluminescence display panel |
| CN108269830A (en) * | 2016-12-30 | 2018-07-10 | 乐金显示有限公司 | Organic light-emitting display device and its manufacturing method |
| CN108281462A (en) * | 2016-12-30 | 2018-07-13 | 乐金显示有限公司 | Organic light-emitting display device |
| CN108630727A (en) * | 2017-03-21 | 2018-10-09 | 宸鸿光电科技股份有限公司 | Organic LED display device |
| US20180331315A1 (en) * | 2017-05-12 | 2018-11-15 | Japan Display Inc. | Display device |
-
2018
- 2018-12-11 CN CN201811507586.5A patent/CN109599426B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102623485A (en) * | 2011-01-25 | 2012-08-01 | 索尼公司 | Organic EL display and electronic apparatus |
| CN106057850A (en) * | 2015-04-08 | 2016-10-26 | 佳能株式会社 | Light emitter, image forming system, and exposure unit |
| CN105336874A (en) * | 2015-12-08 | 2016-02-17 | 昆山工研院新型平板显示技术中心有限公司 | Organic light emitting diode, driving method thereof and organic light emitting display screen |
| CN108123049A (en) * | 2016-11-30 | 2018-06-05 | 乐金显示有限公司 | Organic electroluminescence display panel |
| CN108122943A (en) * | 2016-11-30 | 2018-06-05 | 乐金显示有限公司 | Organic electroluminescence display panel |
| CN108269830A (en) * | 2016-12-30 | 2018-07-10 | 乐金显示有限公司 | Organic light-emitting display device and its manufacturing method |
| CN108281462A (en) * | 2016-12-30 | 2018-07-13 | 乐金显示有限公司 | Organic light-emitting display device |
| CN108630727A (en) * | 2017-03-21 | 2018-10-09 | 宸鸿光电科技股份有限公司 | Organic LED display device |
| CN107968106A (en) * | 2017-05-11 | 2018-04-27 | 广东聚华印刷显示技术有限公司 | OLED display panel and preparation method thereof and application |
| US20180331315A1 (en) * | 2017-05-12 | 2018-11-15 | Japan Display Inc. | Display device |
| CN107346778A (en) * | 2017-07-07 | 2017-11-14 | 深圳市华星光电半导体显示技术有限公司 | WOLED display panels and display device |
| CN107634087A (en) * | 2017-10-27 | 2018-01-26 | 京东方科技集团股份有限公司 | A kind of display panel and display device |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110286803A (en) * | 2019-06-28 | 2019-09-27 | 上海天马有机发光显示技术有限公司 | Display panel and display device |
| CN110286803B (en) * | 2019-06-28 | 2023-05-09 | 武汉天马微电子有限公司 | Display panel and display device |
| CN110610972A (en) * | 2019-09-19 | 2019-12-24 | 京东方科技集团股份有限公司 | Display substrate, preparation method thereof and display device |
| US11309371B2 (en) * | 2019-09-19 | 2022-04-19 | Chongqing Boe Display Technology Co., Ltd. | Display substrate, method for manufacturing the same, and display device |
| CN111710704B (en) * | 2020-06-29 | 2022-11-15 | 云谷（固安）科技有限公司 | Display panel and display device |
| CN111710704A (en) * | 2020-06-29 | 2020-09-25 | 云谷（固安）科技有限公司 | Display panel and display device |
| CN111863918A (en) * | 2020-07-29 | 2020-10-30 | 京东方科技集团股份有限公司 | Display back plate and manufacturing method thereof, display panel and display device |
| CN111863918B (en) * | 2020-07-29 | 2023-05-02 | 京东方科技集团股份有限公司 | Display backboard, manufacturing method thereof, display panel and display device |
| CN111863929A (en) * | 2020-08-28 | 2020-10-30 | 京东方科技集团股份有限公司 | Display substrate, preparation method thereof and display device |
| WO2022042046A1 (en) * | 2020-08-28 | 2022-03-03 | 京东方科技集团股份有限公司 | Display substrate, preparation method therefor, and display device |
| CN111863929B (en) * | 2020-08-28 | 2024-02-20 | 京东方科技集团股份有限公司 | Display substrate, preparation method thereof and display device |
| CN114023910A (en) * | 2021-11-05 | 2022-02-08 | 武汉天马微电子有限公司 | Display panel and display device |
| EP4207975A1 (en) * | 2021-12-29 | 2023-07-05 | LG Display Co., Ltd. | Organic light emitting diode display device |
| EP4294155A3 (en) * | 2021-12-29 | 2024-02-21 | LG Display Co., Ltd. | Organic light emitting diode display device |
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Effective date of registration: 20211111 Address after: 430205 No. 8, liufangyuanheng Road, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee after: WUHAN TIANMA MICROELECTRONICS Co.,Ltd. Patentee after: Wuhan Tianma Microelectronics Co.,Ltd. Shanghai Branch Address before: 201201 room 509, building 1, No. 6111, Longdong Avenue, Pudong New Area, Shanghai Patentee before: SHANGHAI TIANMA AM-OLED Co.,Ltd. |