CN100455151C - Organic electroluminescence element and method of manufacture - Google Patents
Organic electroluminescence element and method of manufacture Download PDFInfo
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- CN100455151C CN100455151C CNB2005100938130A CN200510093813A CN100455151C CN 100455151 C CN100455151 C CN 100455151C CN B2005100938130 A CNB2005100938130 A CN B2005100938130A CN 200510093813 A CN200510093813 A CN 200510093813A CN 100455151 C CN100455151 C CN 100455151C
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Abstract
This invention relates to organic laser light element process method, which comprises the following steps: forming first electrode layer on base board; then forming organic laser layer with aniline single part with fluorine; then forming second electrode layer on organic laser light layer; adding organic laser light layer electron and combination rate to improve organic laser light element efficiency on organic laser light layer.
Description
Technical field
The invention relates to a kind of light-emitting component and manufacture method thereof, and particularly relevant for a kind of organic electroluminescent element (Organic Electro-Luminescent Device, OEL Device) and manufacture method thereof.
Background technology
With regard to display, have high image quality, in light weight, space utilization efficient is good, (Flat Panel Display FPD) becomes the main flow in market to the flat-panel screens of low consumpting power, advantageous characteristic such as radiationless gradually.
And so-called flat-panel screens comprise LCD (Liquid Crystal Display, LCD), organic electro-luminescent display (OEL Display, OELD) and plasma scope (Plasma Display Panel, PDP) or the like.Wherein, organic electro-luminescent display is made of self-luminosity (self-emissive) element, and have the restriction of no visual angle, low manufacturing cost, high answer speed (being about more than hundred times of liquid crystal), power saving, the current drives that can be used in portable electronic devices, operating temperature range is big and in light weight and can very meet the characteristic requirement of multimedia era display with advantages such as hardware miniaturization and slimmings.Therefore, organic electro-luminescent display has great development potentiality, is expected to become next flat-panel screens from generation to generation.
Organic electroluminescent element is the element that a kind of self luminous characteristic of utilizing organic functional material (organic functionalmaterials) reaches display effect, can be divided into micromolecule organic electroluminescent element (small moleculeOLED according to the molecular weight difference of organic functional material, SM-OLED and macromolecule organic electroluminescent element (polymer light-emittingdevice, PLED) two big classes.The ray structure of organic electroluminescent element is made of pair of electrodes and organic functional layer.Between electric current is by transparent anode and metallic cathode, makes the combination again in the organic functional layer of electronics and electric hole, and make the organic functional layer produce the mechanism of giving out light of different colours according to its properties of materials.
In order to increase the luminous efficiency of organic electroluminescent element, except the material that improves organic functional layer itself, another kind method promptly is a dopant in the organic electric-excitation luminescent layer, with increase electronics, electric hole in the organic electric-excitation luminescent layer again in conjunction with probability, and then improve efficiency of element.Yet, because the dopant major part of known use is not good for the solubility of organic material, so dopant also can't be evenly mixed with the organic material of organic electric-excitation luminescent layer, so cause dopant to separate with the organic electric-excitation luminescent layer easily and can't in the organic electric-excitation luminescent layer, increase effectively electronics, electric hole again in conjunction with probability.
Summary of the invention
Therefore, the purpose of this invention is to provide a kind of organic electroluminescent element and manufacture method thereof, the electric hole transferring material that mixes in the organic electric-excitation luminescent layer makes organic electroluminescent element have preferable luminous efficiency.
Another object of the present invention provides a kind of organic electroluminescent element and manufacture method thereof, and the organic electric-excitation luminescent layer of this organic electroluminescent element is had than homogeneous thickness.
The present invention proposes a kind of organic electroluminescent element, comprises one first electrode layer, an organic electric-excitation luminescent layer and a second electrode lay at least and is arranged in regular turn on the substrate; Wherein, the organic electric-excitation luminescent layer is the electric hole transferring material that mixes, and electric hole transferring material dissolves in the organic solvent, and wherein, described electric hole transferring material comprises the benzene ring compound of contain fluorine atoms.
The present invention proposes a kind of organic electroluminescent element in addition, comprises one first electrode layer, an organic electric-excitation luminescent layer and a second electrode lay at least and is arranged in regular turn on the substrate.Wherein, the organic electric-excitation luminescent layer be mix dissolve in one organic in molten a nitrogen atom and/or the benzene ring compound of contain fluorine atoms.
Described according to embodiments of the invention, first electrode layer for example is to have plural number first strip shaped electric poles parallel to each other, and the second electrode lay for example is to have plural number second strip shaped electric poles parallel to each other.Wherein, the projecting direction of second strip shaped electric poles is different with the projecting direction of first strip shaped electric poles.And in another embodiment, the substrate of organic electroluminescent element for example is active array substrate (active matrix arraysubstrate), first electrode layer for example is to comprise plural pixel electrode, and the second electrode lay for example is altogether with electrode (common electrode).
Described according to embodiments of the invention, organic electroluminescent element more comprises an electric hole transport layer, is arranged between first electrode layer and the organic electric-excitation luminescent layer.
Described according to embodiments of the invention, the electric hole transferring material that mixes in the organic electric-excitation luminescent layer for example is a benzene ring compound, and the preferably benzene ring compound of contain fluorine atoms and/or nitrogen atom, for example is fluorine-containing aniline (anline) monomer.And cooperate the used organic solvent of electric hole transferring material is the organic solvent that contains phenyl ring, and preferably toluene, ortho-xylene or methyl phenyl ethers anisole.
The present invention proposes a kind of manufacture method of organic electroluminescent element, be on a substrate, to form one first electrode layer earlier, on first electrode layer, form an organic electric-excitation luminescent layer of the electric hole transferring material that mixes again, wherein electric hole transferring material dissolves in the organic solvent, forms a second electrode lay afterwards again on the organic electric-excitation luminescent layer.
The present invention more proposes a kind of manufacture method of organic electroluminescent element, be on a substrate, to form one first electrode layer earlier, on first electrode layer, form an organic electric-excitation luminescent layer of the benzene ring compound of mix a nitrogen atom and/or contain fluorine atoms again, wherein the benzene ring compound of nitrogen atom and/or contain fluorine atoms dissolves in the organic solvent, forms a second electrode lay afterwards again on the organic electric-excitation luminescent layer.
Described according to embodiments of the invention, after forming first electrode layer with formation organic electric-excitation luminescent layer before, more comprise the substrate and first electrode layer are carried out surface treatment, with the hydrophily (hydrophilicity) on the surface of improving the substrate and first electrode layer.In one embodiment, it for example is with oxygen gas plasma (O
2Plasma) or UV/ozone (UV/O
3) come the substrate and first electrode layer are carried out surface treatment.
Described according to embodiments of the invention, after forming first electrode with form before the organic electric-excitation luminescent layer, more be included in formation one electric hole transport layer on first electrode layer.In one embodiment, the formation method of electric hole transport layer and organic electric-excitation luminescent layer for example is transfer (transfer), ink jet printing (ink-jet printing), deposition (deposition), printing (printing) or rotary coating (spin coating) etc.In one embodiment, more be included in and form after first electrode layer and form before the organic electric-excitation luminescent layer, on the substrate and/or first electrode layer, form a barrier layer.
Described according to embodiments of the invention, after forming barrier layer with form before the organic electric-excitation luminescent layer, more comprise barrier layer carried out surface treatment, with the hydrophobicity (hydrophobicity) on increase barrier layer surface.In one embodiment, it for example is with carbon tetrafluoride plasma (CF
4Plasma), Chlorofluorocarbons (CFCs) plasma or fluorocarbons plasma, barrier layer is carried out surface treatment.
The present invention is the electric hole transferring material that mixes in the organic electric-excitation luminescent layer of organic electroluminescent element, to increase the luminous efficiency of organic electroluminescent element.In addition, electricity hole transferring material is except having electric hole transmission characteristic, also can increase the hydrophobicity of electric hole transport layer with respect to the organic solvent of doping organic electric-excitation luminescent material, therefore the present invention also can avoid in the ink jet printing processing procedure of organic electric-excitation luminescent layer, and the overflow or the problem of thickness inequality take place.
For above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and cooperate appended graphicly, be described in detail below.
Description of drawings
Figure 1A to Figure 1B illustrates the manufacturing process into a kind of passive type organic electroluminescent element of a preferred embodiment of the present invention.
Fig. 2 illustrates and is the schematic perspective view according to the organic electroluminescent element of the flow process manufacturing of Figure 1A to Figure 1B.
Fig. 3 illustrates the part schematic perspective view into the organic electroluminescent element in one embodiment of the invention.
Fig. 4 illustrates the part schematic perspective view into the organic electroluminescent element in one embodiment of the invention.
Fig. 5 illustrates and is the graph of relation of the part by weight of fluorine-containing aniline monomer in organic solvent to the contact angle between organic solvent and the electric hole transport layer.
Fig. 6 illustrates the three-dimensional exploded view into the organic electroluminescent element in the another embodiment of the present invention.
Fig. 7 illustrates and is the operating voltage of organic electroluminescent element of the present invention and the graph of relation of its luminous efficiency.
100: 102: the first electrode layers of substrate
102a: the first strip shaped electric poles 102b: pixel electrode
104: electric hole transport layer 106: organic electric-excitation luminescent layer
108: the second electrode lay 108a: second strip shaped electric poles
110: barrier layer 112: the picture element zone
130: organic electroluminescent element 600: organic electroluminescent element
602: active array substrate 604: scan line
606: data line 610: actuation element
612: driver element 608: common electrode
Embodiment
The present invention mixes to dissolve in the electric hole transferring material of organic solvent in the organic electric-excitation luminescent layer of organic electroluminescent element, to improve the luminous efficiency of organic electroluminescent element.Following examples are to be that example illustrates with the double deck type organic electroluminescent element, should be understood that organic electroluminescent element of the present invention also can be single-layer type, three stratotypes or the organic electroluminescent element of multi-layered type yet have the knack of this skill person.Below disclosed embodiment be in order to explanation the present invention, but not in order to limit the present invention.
Figure 1A to Figure 1B illustrates the manufacturing process into a kind of organic electroluminescent element of a preferred embodiment of the present invention.Fig. 2 then illustrates and is the schematic perspective view according to the organic electroluminescent element of the flow process manufacturing of Figure 1A to Figure 1B.Please refer to Figure 1A, at first on substrate 100, form one first electrode layer 102, wherein first electrode layer 102 is made of the plural first strip shaped electric poles 102a, and its material for example is indium tin oxide (ITO), indium-zinc oxide (IZO), aluminium zinc oxide (AZO), cadmium tin-oxide or other transparent electrode materials.
Please refer to Figure 1B, then on the substrate 100 and first electrode layer 102, form the organic electric-excitation luminescent layer 106 of an electric hole transport layer 104 and the electric hole transferring material that mixes in regular turn.Wherein, electricity hole transport layer 104 for example is the macromolecule organic material with the staggered conjugation of Dan Shuanjian with the material of organic electric-excitation luminescent layer 106, and the material of electric hole transport layer 104 for example is ethylidene dioxy thiophenols (Poly-3,4-Ethylenedioxythiophene, PEDOT) or polyaniline (polyaniline, PANI).The material of organic electric-excitation luminescent layer 106 for example is that poly-(2-methoxyl group-5-(2-ethyl hexyl oxy)) is to phenylacetylene (poly[2-methoxy-5-(2-ethyl-hexyloxy)-1,4-phenylenevinylene], MEH-PPV), phenol formaldehyde (phenol formaldehyde, PF) or other are being subjected to optical excitation or electricity can emit the high-molecular organic material of visible light after exciting.And the formation method of electric hole transport layer 104 and organic electric-excitation luminescent layer 106 for example is a method of spin coating.
The present invention is in the processing procedure that forms organic electric-excitation luminescent layer 106, for example be simultaneously organic electric-excitation luminescent material and electric hole transferring material to be dissolved in the organic solvent, coat again on the electric hole transport layer 104, and toast processing procedure to form organic electric-excitation luminescent layer 106.Wherein, electric hole transferring material for example is benzene ring compound or the material with electric hole transport property.In a preferred embodiment of the present invention, electric hole transferring material for example is the benzene ring compound of nitrogen atom and/or contain fluorine atoms, and its preferable be fluorine-containing aniline monomer.Wherein, because nitrogen-atoms and fluorine atom on the phenyl ring have a plurality of unpaired electrons (unpaired electrons), and the resonance between unpaired electron and the phenyl ring can be stablized the structure of this organic molecule, and then increases the electronics electricity hole probability of combination again in the organic electric-excitation luminescent layer 106.Because fluorine-containing aniline monomer has preferable solubility in organic solvent, therefore can avoid the problem that is separated between the dopant and organic electric-excitation luminescent layer in the conventional process.And cooperate the used organic solvent of electric hole transferring material is the organic solvent that contains phenyl ring, and preferably toluene (toluene), ortho-xylene (o-xylene) or methyl phenyl ethers anisole (anisole).
In addition, in a preferred embodiment of the present invention, before forming the electric hole transport layer 104 that Figure 1B illustrated, also can carry out surface treatment to the substrate 100 and first electrode layer 102, increasing its hydrophily, and then increase the tack between electric hole transport layer 104 and the substrate 100 and first electrode layer 102.In the present embodiment, for example be the surface treatment process that utilizes oxygen gas plasma or carry out the substrate 100 and first electrode layer 102 by the ozone that UV-irradiation is derived.
Please after forming organic electric-excitation luminescent layer 106, then on organic electric-excitation luminescent layer 106, form a second electrode lay 108 simultaneously with reference to Figure 1B and Fig. 2.Wherein, the second electrode lay 108 for example is to have the plural number second strip shaped electric poles 108a parallel to each other, and the projecting direction of the second strip shaped electric poles 108a is different with the projecting direction of the first strip shaped electric poles 102a, and preferably vertical mutually, and the overlapping zone between the second strip shaped electric poles 108a and the first strip shaped electric poles 102a is the picture element zone 112 of organic electroluminescent element.And the material of the second electrode lay 108 for example is a metal or alloy, comprises preferable metal or its alloys of conductivity such as aluminium, calcium, magnesium, indium, tin, manganese, chromium, copper, silver, gold.
In another embodiment of the present invention, the mode that organic electric-excitation luminescent layer 106 can also ink jet printing forms, and it for example is earlier macromolecule organic material to be dissolved in the organic solvent, and then carries out ink jet printing.Black liquid cross staining colour mixture in each picture element zone in the ink jet printing processing procedure; usually can be after forming first electrode layer 102; on the substrate 100 and/or first electrode layer 102, form earlier a barrier layer 110 defining at least one picture element zone 112 (as shown in Figure 3), in order to intercept black liquid and then to avoid taking place the phenomenon of colour mixtures in picture element zone 112.Yet in the ink jet printing processing procedure of known organic material, overflow phenomena still easily takes place and then causes picture element zone 112 to produce the colour mixture or the problem of thickness inequality in black liquid.And the present invention also can solve the problem that is produced in the above-mentioned ink jet printing processing procedure, below will be for an embodiment explanation.
Fig. 4 illustrates the phantom into a kind of organic electroluminescent element of another embodiment of the present invention.Please refer to Fig. 4, the present invention forms on first electrode layer 102 after the electric hole transport layer 104, then organic electric-excitation luminescent material and electric hole transferring material are dissolved in the organic solvent simultaneously and (do not illustrate), with as formation organic electric-excitation luminescent layer 106 employed black liquid in the ink jet printing processing procedure.Wherein, electric hole transferring material for example is above-mentioned fluorine-containing aniline monomer.And then carry out the ink jet printing processing procedure with this black liquid, with formation organic electric-excitation luminescent layer 106 in picture element zone 112.Electricity hole transport layer 104 is to be distributed in simultaneously on the barrier layer 110, and this electric hole transferring material can make the surface tension of this black liquid approach the surface tension of electric hole transport layer 104, so electric hole transferring material can increase the contact angle (contact angle) between black liquid and transport layer 104 surfaces, electric hole, and then increases the hydrophobicity of electric hole transport layer 104 with respect to black liquid.Therefore, the present invention can prevent to be flow in the picture element zone 112 and the colour mixture problem of generation by the black hydrorrhea on the barrier layer 110 in the ink jet printing processing procedure of organic electric-excitation luminescent layer 106 effectively.
By experimental data as can be known, the surface tension of electricity hole transport layer for example is 66.3dyne/cm, and known employed black liquid (is doped with the dynamo-electric electroluminescent material that swashs, but the surface tension organic solvent of the electric hole transferring material that do not mix) is 26.8dyne/cm, and its surface tension of organic solvent of the aniline monomer of doped fluor-containing of the present invention and organic electric-excitation luminescent material then is 33.5dyne/cm.Hence one can see that, and fluorine-containing aniline monomer can make the surface tension of the organic solvent of doping organic electric-excitation luminescent material approach the surface tension of electric hole transport layer effectively, and then make contact angle between the two become big.Fig. 5 promptly illustrate into the part by weight of fluorine-containing aniline monomer in the organic solvent of doping organic electric-excitation luminescent material to the organic solvent of doping organic electric-excitation luminescent material and the graph of relation of the contact angle between the transport layer of electric hole.In the ink jet printing processing procedure of organic electric-excitation luminescent layer, can decide fluorine-containing aniline monomer to be doped in the part by weight of organic electric-excitation luminescent material with reference to the graph of relation that Fig. 5 illustrated, so that between the organic solvent of doping organic electric-excitation luminescent material and electric hole transport layer, have more suitable contact angle, and then reach the required hydrophobicity of processing procedure.
Before the above-mentioned method formation organic electric-excitation luminescent layer 106 that Fig. 4 was illustrated, also can carry out surface treatment to barrier layer 110 (or the electric hole transport layer 104 on the barrier layer 110), to improve it with respect to the hydrophobicity that forms organic electric-excitation luminescent layer 106 used black liquid, and it for example is with the carbon tetrafluoride plasma barrier layer 110 to be carried out surface treatment, and flow, operating pressure, processing procedure time and radio frequency of control carbon tetrafluoride plasma or the like, reaching the uniformity of film forming, and reduce the phenomenon of black hydrorrhea stream.
Below will be that example illustrates organic electroluminescent element of the present invention with the organic electroluminescent element that Figure 1B was illustrated.Please be simultaneously with reference to Figure 1B and Fig. 2, organic electroluminescent element 130 comprises one first electrode layer 102, an organic electric-excitation luminescent layer 106 and a second electrode lay 108 at least and is arranged at a substrate 100 in regular turn.Wherein, first electrode 102 has the plural first strip electrode layer 102a, be the electric hole transferring material that mixes in the organic electric-excitation luminescent layer 106, this electric hole transferring material for example is the benzene ring compound of contain fluorine atoms and/or nitrogen atom, and its preferable be fluorine-containing aniline monomer.And cooperate the used organic solvent of electric hole transferring material is the organic solvent that contains phenyl ring, and preferably toluene, ortho-xylene or methyl phenyl ethers anisole.
In one embodiment, organic electroluminescent element 130 more comprises an electric hole transport layer 104 that is arranged between first electrode layer 102 and the organic electric-excitation luminescent layer 106, the second electrode lay 108 for example is to have the plural second strip shaped electric poles 108a, and the projecting direction of the second strip shaped electric poles 108a is different with the projecting direction of the first strip shaped electric poles 102a, and it for example is orthogonal.
The present invention also can be applicable to make the active organic electroluminescent element.Please refer to Fig. 6, organic electroluminescent element of the present invention for example is to be made of active array substrate 602, pixel electrode 102b, common electrode 608, electric hole transport layer 104 and 106 on organic electric-excitation luminescent layer.Wherein, comprise the driver element 612 that is constituted by scan line 604, data line 606, actuation element 610 on the active array substrate 602,, organic electric-excitation luminescent layer 106 is emitted beam to drive pixel electrode 102b.Electricity hole transport layer 104 is to be arranged in regular turn on the active array substrate 602 with organic electric-excitation luminescent layer 106, and in the organic electric-excitation luminescent layer 106 the electric hole transferring material that mixes, for example be fluorine-containing phenyl ring monomer, to improve the luminous efficiency of organic electric-excitation luminescent layer 106.608 of common electrodes are arranged on the organic electric-excitation luminescent layer 106, together to drive organic electric-excitation luminescent layer 106 with pixel electrode 102b.
From the above, the present invention is the electric hole transferring material that mixes in the organic electric-excitation luminescent layer of organic electroluminescent element, increase in the organic electric-excitation luminescent layer electronics electricity hole probability of combination again, so that organic electroluminescent element of the present invention has preferable luminous efficiency.And, in experimental data of the present invention, can learn, in macromolecule organic electric-excitation luminescent layer, mix when having the about 0.2wt% of material of benzene ring structure, when this organic electroluminescent element is 7 volts at operating voltage, luminous efficiency can obviously increase, and it for example is to be promoted to 11cd/A by 7cd/A.Fig. 7 promptly illustrates and is the operating voltage of organic electroluminescent element of the present invention and the graph of relation of its luminous efficiency.Please refer to Fig. 7, represent the operating voltage of the organic electroluminescent element of the fluorine-containing aniline monomer of doping 0.2wt% in the organic electric-excitation luminescent layer and the relation curve of its luminous efficiency with the curve shown in the solid line, then represent in the organic electric-excitation luminescent layer the not relation curve of the operating voltage of the organic electroluminescent element of the aniline monomer of doped fluor-containing and its luminous efficiency with the curve shown in the dotted line.Thus two curves as can be known, the organic electroluminescent element of the fluorine-containing aniline monomer of doping 0.2wt% can have preferable luminous efficiency.
In sum, the present invention has following advantage:
1, the present invention is the electric hole transferring material that mixes in the organic electric-excitation luminescent layer of organic electroluminescent element, increasing in the organic electric-excitation luminescent layer electronics electricity hole probability of combination again, and then improves the luminous efficiency of organic electroluminescent element.
2, fluorine-containing aniline monomer used in the present invention has preferable solubility in organic solvent, therefore can avoid the problem that dopant separates with the organic electric-excitation luminescent layer in the conventional process.
3, electric hole used in the present invention transferring material can make the organic solvent of doping organic electric-excitation luminescent material that the contact angle between the surface of electric hole transport layer is become big, and then increase the hydrophobicity of the surface of electric hole transport layer with respect to the organic solvent of doping organic electric-excitation luminescent material, with the colour mixture that produced in the ink jet printing processing procedure that improves known organic electric-excitation luminescent layer and the problem of thickness inequality.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; anyly have the knack of this skill person; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.
Claims (10)
1, a kind of organic electroluminescent element is characterized in that it comprises that at least one first electrode layer, an organic electric-excitation luminescent layer and a second electrode lay are arranged on the substrate in regular turn;
Wherein, the organic electric-excitation luminescent layer is the electric hole transferring material that mixes, and electric hole transferring material dissolves in the organic solvent;
Wherein, described electric hole transferring material comprises the benzene ring compound of contain fluorine atoms.
2, organic electroluminescent element according to claim 1, it is characterized in that wherein said first electrode layer has plural number parallel to each other first strip shaped electric poles, the second electrode lay has plural number parallel to each other second strip shaped electric poles, and the projecting direction of first strip shaped electric poles is different with the projecting direction of second strip shaped electric poles.
3, organic electroluminescent element according to claim 1 is characterized in that it more comprises an electric hole transport layer, is arranged between first electrode layer and the organic electric-excitation luminescent layer.
4, organic electroluminescent element according to claim 1 is characterized in that wherein said electric hole transferring material also comprises the benzene ring compound of nitrogen atom.
5, organic electroluminescent element according to claim 1 is characterized in that the benzene ring compound of wherein said contain fluorine atoms comprises fluorine-containing aniline monomer.
6, organic electroluminescent element according to claim 1, the material that it is characterized in that wherein said organic electric-excitation luminescent layer is for gathering (2-methoxyl group-5-(2-ethyl hexyl oxy)) to phenylacetylene or phenol formaldehyde.
7, organic electroluminescent element according to claim 1 is characterized in that wherein said organic solvent is the organic solvent that contains phenyl ring.
8, organic electroluminescent element according to claim 7, it is characterized in that the wherein said organic solvent that contains phenyl ring be selected from toluene, adjacent diformazan is stupid and methyl phenyl ethers anisole at least one of them.
9, organic electroluminescent element according to claim 1 is characterized in that it more comprises a barrier layer, is arranged on the substrate and/or first electrode layer, to define at least one picture element zone.
10, a kind of manufacture method of organic electroluminescent element is characterized in that it comprises at least:
On a substrate, form one first electrode layer;
Form an organic electric-excitation luminescent layer of the benzene ring compound of mix a nitrogen atom and/or contain fluorine atoms on first electrode layer, wherein the benzene ring compound of nitrogen atom and/or contain fluorine atoms dissolves in the organic solvent; And
On the organic electric-excitation luminescent layer, form a second electrode lay.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1452439A (en) * | 2002-04-15 | 2003-10-29 | 索尼公司 | Organic electroluminescent device and luminant apparatus |
| CN1453886A (en) * | 2002-04-24 | 2003-11-05 | 伊斯曼柯达公司 | Organic light-emitting diode equipment with improved operation stability |
| CN1505447A (en) * | 2002-11-29 | 2004-06-16 | 铼宝科技股份有限公司 | Organic electroluminescent cell |
| CN1607878A (en) * | 2003-09-30 | 2005-04-20 | 三洋电机株式会社 | Organic electroluminescent device and organic compound for organic electroluminescent device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1452439A (en) * | 2002-04-15 | 2003-10-29 | 索尼公司 | Organic electroluminescent device and luminant apparatus |
| CN1453886A (en) * | 2002-04-24 | 2003-11-05 | 伊斯曼柯达公司 | Organic light-emitting diode equipment with improved operation stability |
| CN1505447A (en) * | 2002-11-29 | 2004-06-16 | 铼宝科技股份有限公司 | Organic electroluminescent cell |
| CN1607878A (en) * | 2003-09-30 | 2005-04-20 | 三洋电机株式会社 | Organic electroluminescent device and organic compound for organic electroluminescent device |
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