CN105870353A - Organic light-emitting diode device, fabrication method thereof and display device - Google Patents
Organic light-emitting diode device, fabrication method thereof and display device Download PDFInfo
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- CN105870353A CN105870353A CN201610232695.5A CN201610232695A CN105870353A CN 105870353 A CN105870353 A CN 105870353A CN 201610232695 A CN201610232695 A CN 201610232695A CN 105870353 A CN105870353 A CN 105870353A
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- electroluminescence device
- organic electroluminescence
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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
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/854—Arrangements for extracting light from the devices comprising scattering means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
Abstract
The invention provides an organic light-emitting diode device, a fabrication method thereof and a display. The organic light-emitting diode device comprises a reflection electrode, a transparent electrode and an organic functional layer, wherein the organic functional layer comprises a luminous layer and a scattering functional layer, and the scattering functional layer is arranged between the luminous layer and the reflection electrode and is doped with scattered particles. In the organic light-emitting diode device, a light ray emitted from the luminous layer is reflected by the scattered particles doped in the organic functional layer and the reflection electrode and then is emitted out through the transparent electrode, thus, the half-wave width of an output wave can be effectively increased, and the color cast is further improved.
Description
Technical field
The present invention relates to Display Technique field, particularly relate to a kind of organic electroluminescence device and
Manufacture method, display device.
Background technology
Organic Light Emitting Diode (Organic Light-Emitting Diode is called for short OLED) is
A kind of organic electroluminescence device, it has, and preparation technology is simple, low cost, luminous efficiency are high,
Being easily formed the advantages such as flexible structure, therefore, the application of Organic Light Emitting Diode is more and more extensive.
In prior art, as a example by top emission OLED device, as it is shown in figure 1, top emitting OLED
Device includes: semitransparent cathode, reflection anode and organic function layer, wherein, and organic function layer
Including luminous material layer.Under DC Electric Field, electronics and hole are respectively from negative electrode and anode
Inject luminous material layer, thus carry out migrating, being combined and decay and send out in this luminous material layer
Light.And for improving the method for colour cast mainly in prior art: the thickness of thinning semitransparent cathode
Degree.But cathode thickness is thinning, the driving voltage of the device of OLED can be caused to increase, increase
Power consumption.
Summary of the invention
For the defect of prior art, the present invention provides a kind of organic electroluminescence device and system thereof
Make method, display device, it is possible in solution prior art, the thickness of thinning semitransparent cathode is to change
Kind colour cast, thus cause the driving voltage of device to increase, the problem increasing power consumption.
First aspect, the invention provides a kind of organic electroluminescence device, including: reflection electricity
Pole, transparency electrode and organic function layer,
Described organic function layer includes: luminescent layer, and is positioned at described luminescent layer and described reflection
The scattering function layer doped with scattering particles between electrode.
Preferably, described reflecting electrode is anode layer, and described transparency electrode is cathode layer.
Preferably, described scattering function layer is: hole injection layer, hole transmission layer or electronics
Barrier layer.
Preferably, described organic electroluminescence device also includes: be positioned at described luminescent layer with described
Electron injecting layer between transparency electrode and electron transfer layer.
Preferably, described reflecting electrode is cathode layer, and described transparency electrode is anode layer.
Preferably, described scattering function layer is: electron injecting layer or electron transfer layer.
Preferably, described organic electroluminescence device also includes: be positioned at described luminescent layer and described
Hole injection layer, hole transmission layer and electronic barrier layer between transparency electrode.
Second aspect, the invention provides the manufacture method of a kind of organic electroluminescence device, bag
Include and sequentially form reflecting electrode, organic function layer and transparency electrode,
Wherein, described formation organic function layer includes: sequentially forms on described reflecting electrode and mixes
The miscellaneous scattering function layer having scattering particles and luminescent layer.
Preferably, described formation doped with the scattering function layer of scattering particles, including:
By the way of vacuum thermal evaporation, described reflecting electrode deposits described scattering function layer.
The third aspect, the invention provides a kind of display device, and any one is organic including above-mentioned
Electroluminescent device.
As shown from the above technical solution, the present invention provide organic electroluminescence device and making
Method, display device, by mixing in any organic function layer of reflecting electrode and luminous interlayer
Miscellaneous scattering particles, so, the scattering grain that the light that luminescent layer sends adulterates in organic function layer
Through transparency electrode outgoing after son and reflecting electrode reflection, it is possible to effectively increase output wave
Half-wave width, thus further improve the situation of colour cast.
Compared with prior art, the present invention without the thickness of thinning semitransparent cathode to improve colour cast,
Thus the driving voltage producing device increases, the problem increasing power consumption.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below
The accompanying drawing used required in embodiment or description of the prior art will be briefly described, aobvious and
Easily insight, the accompanying drawing in describing below is only some embodiments of the present invention, for this area
From the point of view of those of ordinary skill, on the premise of not paying creative work, it is also possible to according to these
Figure obtains other accompanying drawing.
Fig. 1 is the structural representation of top emission OLED device in prior art；
Fig. 2 is the structural representation of a kind of organic electroluminescence device that one embodiment of the invention provides
Figure；
Fig. 3 is the structural representation of a kind of organic electroluminescence device that the embodiment of the present invention 1 provides
Figure；
Fig. 4 is that the structure of the another kind of organic electroluminescence device that the embodiment of the present invention 1 provides is shown
It is intended to；
Fig. 5 is the structural representation of a kind of organic electroluminescence device that the embodiment of the present invention 2 provides
Figure；
Fig. 6 is that the structure of the another kind of organic electroluminescence device that the embodiment of the present invention 2 provides is shown
It is intended to；
Fig. 7 is the wavelength of the emergent light before and after the introducing scattering particles that one embodiment of the invention provides
Schematic diagram；
Description of symbols in Fig. 2 to Fig. 6: 1-reflecting electrode；2-transparency electrode；3-luminescent layer；
4-scattering function layer；41-scattering particles；301-anode layer；302-cathode layer；303-luminescent layer；
304-hole injection layer；305-hole transmission layer；306-electron transfer layer；307-electron injecting layer；
308-electronic barrier layer.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, to the technical side in the embodiment of the present invention
Case is clearly and completely described, it is clear that described embodiment is only the present invention one
Divide embodiment rather than whole embodiments.Based on the embodiment in the present invention, this area is general
The every other embodiment that logical technical staff is obtained under not making creative work premise,
Broadly fall into the scope of protection of the invention.
Fig. 2 is the structural representation of a kind of organic electroluminescence device in one embodiment of the invention,
As in figure 2 it is shown, this organic electroluminescence device includes: reflecting electrode 1, transparency electrode 2 and have
Machine functional layer.
Wherein, described organic function layer includes: luminescent layer 3, and is positioned at described luminescent layer 3
And the scattering function layer 4 doped with scattering particles 41 between described reflecting electrode 1.
Wherein, the scattering particles 41 in the present embodiment is the particle with high reflectance, such as:
TiO2 nanoparticle or SiO2 nanoparticle etc..
As can be seen here, the organic electroluminescence device in the present embodiment, by reflecting electrode 1
And the scattering particles 41 that adulterates in any organic function layer between luminescent layer 3.So, such as Fig. 2 institute
Show, the light that luminescent layer 3 sends be scattered particle 41 and reflecting electrode 1 reflection after through transparent electrical
Pole 2 outgoing, it is possible to effectively increase the half-wave width of output wave, thus further improve colour cast
Situation.
Specifically, the scattering particles 41 in the present embodiment can introduce luminescent layer 3 and reflecting electrode 1
Between one or more layers organic function layer any, then doped with the organic function layer of scattering particles
Can be that hole injection layer, hole transmission layer, electronic barrier layer, electron injecting layer or electronics pass
One or more layers in the organic function layers such as defeated layer, this is not any limitation as by the present embodiment.
Further, since each organic function layer variable thickness causes, then adulterate in each organic function layer
The amount of scattering particles 41 and differ, specifically can control to be adulterated by controlling evaporation rate
The concentration of scattering particles.
Another embodiment of the present invention provides the manufacture method of a kind of organic electroluminescence device, should
Method includes: sequentially form reflecting electrode, organic function layer and transparency electrode.
Wherein, described formation organic function layer includes: sequentially forms on described reflecting electrode and mixes
The miscellaneous scattering function layer having scattering particles and luminescent layer.
In an alternate embodiment of the present invention where, formed described in above-described embodiment doped with dissipating
The step of the scattering function layer of radion, specifically can be accomplished in that
By the way of vacuum thermal evaporation, described reflecting electrode deposits described scattering function layer.
So, can be by controlling the scattering grain that evaporation rate controls to be entrained in scattering function layer
The concentration of son.
Based on same inventive concept, another embodiment of the present invention provides a kind of display device,
Including the organic electroluminescence device in any of the above-described embodiment.This display device can be: liquid
LCD panel, mobile phone, panel computer, television set, notebook computer, DPF, lead
Any product with display function or the parts such as boat instrument.This display device is owing to including above-mentioned
Anticipate the display device of a kind of organic electroluminescence device, thus same technical problem can be solved,
And obtain identical technique effect.
In order to be illustrated more clearly that technical scheme, by following embodiment to the present invention
The structure of organic electroluminescence device be specifically illustrated.
Embodiment 1:
As described in Figure 3, present embodiments provide a kind of organic electroluminescence device, including: anti-
Radio pole, transparency electrode and the organic function layer being arranged between reflecting electrode and transparency electrode.
Wherein, described organic function layer includes: luminescent layer, and be positioned at described luminescent layer with described instead
The scattering function layer doped with scattering particles between radio pole.
Wherein, described reflecting electrode is anode layer 301, and described transparency electrode is cathode layer 302.
Wherein, described scattering function layer can be: hole injection layer, hole transmission layer or electronics
In barrier layer one or more layers.In the present embodiment, as it is shown on figure 3, scattering function layer is hole
Implanted layer 304, i.e. doped with scattering particles in hole injection layer 304.
It addition, as it is shown on figure 3, the organic electroluminescence device in the present embodiment also includes: empty
Cave transmitting layer 3 05, luminescent layer 303 and be positioned between described luminescent layer 303 and cathode layer 302
Electron injecting layer 307 and electron transfer layer 306.
Understandably, when luminescent layer 303 is luminous, the direction of light is to launch direction to be roughly divided into
Both direction a: direction is directed towards the direction of cathode layer 302, this part light is directed through the moon
Pole layer 302；Another direction is the direction towards anode layer 301, need to reflect through anode layer 301
Could penetrate.And the light pointing to anode layer 301 enters hole injection layer through hole transmission layer 305
When 304, light can change in the transmission direction of light after the reflection of multiple scattering particless, thus light
Being reflected when reaching anode layer 301, light enters hole injection layer 304 after being reflected by anode layer 301
Time, reflected by scattering particles therein further, so that the half-wave width of output light is widened,
Thus improve the situation of colour cast.
As shown in Figure 4, as another preferred version of the present embodiment, at hole transmission layer 305
And it is additionally provided with electronic barrier layer 308 between luminescent layer 303.The then sensing of luminescent layer 303 luminescence
The light of anode layer 301, first passes around electronic barrier layer 308, hole transmission layer 3505, then enters
Enter hole injection layer 304 (scattering function layer) to reflect.
In the present embodiment, anode layer 301 generally uses inorganic, metal oxide (such as: Indium sesquioxide.
Stannum ITO, zinc oxide ZnO etc.) or organic conductive polymer (such as PEDOT:PSS, PANI
Deng) or metal material (such as gold, copper, the moon, platinum etc.) the processing procedure one-tenth of high work function value.Negative electrode
Layer 302 generally uses the metal materials of low work function values, such as: lithium, magnesium, calcium, strontium, aluminum,
Indium etc., or the alloy of the metal material of above-mentioned low work function value and copper, gold, silver makes.
Embodiment 2:
As described in Figure 5, present embodiments provide a kind of organic electroluminescence device, including: anti-
Radio pole, transparency electrode and the organic function layer being arranged between reflecting electrode and transparency electrode.
Wherein, described organic function layer includes: luminescent layer, and be positioned at described luminescent layer with described instead
The scattering function layer doped with scattering particles between radio pole.
Wherein, described transparency electrode is anode layer 301, and described reflecting electrode is cathode layer 302.
Wherein, described scattering function layer can be: electron injecting layer or electron transfer layer or electricity
One or more layers in sub-transport layer.In the present embodiment, as it is shown in figure 5, scattering function layer is
Electron injecting layer 307, i.e. doped with scattering particles in electron injecting layer 307.
It addition, the organic electroluminescence device in the present embodiment also includes: electron transfer layer 306,
And it is positioned at the hole injection layer 304 between described luminescent layer 303 and anode layer 301 and hole biography
Defeated layer 305.
Understandably, when luminescent layer 303 is luminous, the direction of light is to launch direction to be roughly divided into
Both direction a: direction is directed towards the direction of anode layer 301, this part light is directed through sun
Pole layer 301；Another direction is the direction towards cathode layer 302, need to reflect through cathode layer 302
Could penetrate.And the light pointing to cathode layer 302 enters electron injecting layer through electron transfer layer 306
When 307, light is the transmission direction of light after the reflection of the multiple scattering particless in electron injecting layer 307
Can change, thus be reflected when light reaches cathode layer 302, light is reflected by cathode layer 302
After when entering electron injecting layer 307 again, reflected by scattering particles therein further so that
The half-wave width that must export light is widened, thus improves the situation of colour cast.
As shown in Figure 6, as another preferred version of the present embodiment, at hole transmission layer 305
And it is additionally provided with electronic barrier layer 308 between luminescent layer 303.
In the present embodiment, anode layer 301 generally uses inorganic, metal oxide (such as: Indium sesquioxide.
Stannum ITO, zinc oxide ZnO etc.) or organic conductive polymer (such as PEDOT:PSS, PANI
Deng) or metal material (such as gold, copper, the moon, platinum etc.) the processing procedure one-tenth of high work function value.Negative electrode
Layer 302 generally uses the metal materials of low work function values, such as: lithium, magnesium, calcium, strontium, aluminum,
Indium etc., or the alloy of the metal material of above-mentioned low work function value and copper, gold, silver makes.
It should be noted that in the above-described embodiments, the direction of arrow shown in Fig. 3 to Fig. 6 is
The light direction of organic electroluminescence device.
Further, (simulate before implementing) before introducing scattering particles as shown in Figure 7 and introduce
The wavelength schematic diagram of the OLED emergent light (simulated after implementing) after scattering particles.By scheming
7 understand, and the wavelength introducing the emergent light after scattering particles is significantly greater than going out before introducing scattering particles
Penetrate the wavelength of light.As can be seen here, the introducing scattering particles in organic function layer in the present embodiment
The half-wave width of OLED substantially increase, thus effectively improve the situation of colour cast.
In describing the invention, it should be noted that term " on ", the instruction such as D score
Orientation or position relationship are based on orientation shown in the drawings or position relationship, are for only for ease of and retouch
State the present invention and simplify description rather than instruction or imply that the device of indication or element must have
Specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to the present invention's
Limit.Unless otherwise clearly defined and limited, term " install ", " being connected ", " connection "
Should be interpreted broadly, connect for example, it may be fixing, it is also possible to be to removably connect, or one
Body ground connects；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, also
Can be indirectly connected to by intermediary, can be the connection of two element internals.For ability
For the those of ordinary skill in territory, above-mentioned term can be understood as the case may be in the present invention
Concrete meaning.
Also, it should be noted in this article, the relational terms of such as first and second or the like
It is used merely to separate an entity or operation with another entity or operating space, and differs
Provisioning request or imply and there is the relation of any this reality or suitable between these entities or operation
Sequence.And, term " includes ", " comprising " or its any other variant are intended to non-exclusive
Comprising, so that include the process of a series of key element, method, article or equipment not of property
Only include those key elements, but also include other key elements being not expressly set out, or also wrap
Include the key element intrinsic for this process, method, article or equipment.There is no more restriction
In the case of, statement " including ... " key element limited, it is not excluded that described in including
The process of key element, method, article or equipment there is also other identical element.
Above example only in order to technical scheme to be described, is not intended to limit；Although
With reference to previous embodiment, the present invention is described in detail, those of ordinary skill in the art
It is understood that the technical scheme described in foregoing embodiments still can be modified by it,
Or wherein portion of techniques feature is carried out equivalent；And these amendments or replacement, not
The essence making appropriate technical solution departs from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. an organic electroluminescence device, including: reflecting electrode, transparency electrode and organic merit
Ergosphere, it is characterised in that:
Described organic function layer includes: luminescent layer, and is positioned at described luminescent layer and described reflection
The scattering function layer doped with scattering particles between electrode.
Organic electroluminescence device the most according to claim 1, it is characterised in that described
Reflecting electrode is anode layer, and described transparency electrode is cathode layer.
Organic electroluminescence device the most according to claim 2, it is characterised in that described
Scattering function layer is: hole injection layer, hole transmission layer or electronic barrier layer.
4. according to the organic electroluminescence device described in Claims 2 or 3, it is characterised in that
Described organic electroluminescence device also includes: be positioned between described luminescent layer and described transparency electrode
Electron injecting layer and electron transfer layer.
Organic electroluminescence device the most according to claim 1, it is characterised in that described
Reflecting electrode is cathode layer, and described transparency electrode is anode layer.
Organic electroluminescence device the most according to claim 1, it is characterised in that described
Scattering function layer is: electron injecting layer or electron transfer layer.
7. according to the organic electroluminescence device described in claim 5 or 6, it is characterised in that
Described organic electroluminescence device also includes: be positioned between described luminescent layer and described transparency electrode
Hole injection layer, hole transmission layer and electronic barrier layer.
8. a manufacture method for organic electroluminescence device, including sequentially form reflecting electrode,
Organic function layer and transparency electrode, it is characterised in that:
Wherein, described formation organic function layer includes: sequentially forms on described reflecting electrode and mixes
The miscellaneous scattering function layer having scattering particles and luminescent layer.
Method the most according to claim 8, it is characterised in that described formation is doped with dissipating
The scattering function layer of radion, including:
By the way of vacuum thermal evaporation, described reflecting electrode deposits described scattering function layer.
10. a display device, it is characterised in that include institute any one of claim 1～7
The organic electroluminescence device stated.
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| CN201610232695.5A CN105870353B (en) | 2016-04-14 | 2016-04-14 | Organic electroluminescence device and preparation method thereof, display device |
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| CN201610232695.5A CN105870353B (en) | 2016-04-14 | 2016-04-14 | Organic electroluminescence device and preparation method thereof, display device |
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| CN106025091A (en) * | 2016-07-19 | 2016-10-12 | Tcl集团股份有限公司 | Top-emission type OLED device, display panel and manufacturing method |
| CN108053762A (en) * | 2017-12-06 | 2018-05-18 | 京东方科技集团股份有限公司 | A kind of flexible display panels, its preparation method and display device |
| CN110797468A (en) * | 2019-10-15 | 2020-02-14 | 深圳市华星光电半导体显示技术有限公司 | Display panel and manufacturing method thereof |
| CN110896096A (en) * | 2019-11-07 | 2020-03-20 | 深圳市华星光电半导体显示技术有限公司 | Display panel and preparation method thereof |
| CN110993822A (en) * | 2019-12-18 | 2020-04-10 | 京东方科技集团股份有限公司 | Display panel, manufacturing method thereof and display device |
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| CN105870353B (en) | 2018-04-27 |
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