CN202145468U - Flexible organic electroluminescent device - Google Patents

Flexible organic electroluminescent device Download PDF

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Publication number
CN202145468U
CN202145468U CN201120142884U CN201120142884U CN202145468U CN 202145468 U CN202145468 U CN 202145468U CN 201120142884 U CN201120142884 U CN 201120142884U CN 201120142884 U CN201120142884 U CN 201120142884U CN 202145468 U CN202145468 U CN 202145468U
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China
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layer
inorganic
organic electroluminescent
film
constitute
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CN201120142884U
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Chinese (zh)
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朱儒晖
陈珉
王玉林
洪瑞
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京东方科技集团股份有限公司
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Abstract

The utility model relates to the organic electroluminescent field and provides a flexible organic electroluminescent device. The flexible organic electroluminescent device comprises a flexible substrate, an inorganic high carbon film or a high carbon film and polymer composite membrane modified layer, an anode conductive layer, a double layered hole injection layer, a hole transmission layer, a luminescent layer, an electronic transmission layer, an electronic injection layer and a metal cathode, the inorganic high carbon film or the high carbon film and polymer polymer composite membrane modified layer, the anode conductive layer, the double layered hole injection layer, the hole transmission layer, the luminescent layer, the electronic transmission layer, the electronic injection layer and the metal cathode are successively arranged on an upper surface of the flexible substrate from the bottom to the top, and an inorganic high carbon film or a composite encapsulated layer of the high carbon film and polymer is deposited on the metal cathode. the modified layer and the encapsulated layer can be single layered or double layered, the inorganic carbon film is laminated with edge area of the composite encapsulated layer inorganic high carbon film to form a heat insulation and heat conduction channel with no obstacle, thereby benefiting heat stability of the device, weakening wetting property of the film and steam, enhancing water oxygen blocking performance, and further improving the heat stability and service life of the flexible organic electroluminescent device.

Description

A kind of flexible organic electroluminescent device

Technical field

The utility model includes the organic electro luminescent field, particularly a kind of flexible organic electroluminescent device.

Background technology

Organic electroluminescent LED (OLED) is a kind of brand-new Display Technique, and its display quality can be compared with Thin Film Transistor-LCD (TFT-LCD) mutually, and price is cheap more than it, and it will initiate challenge to widely used LCD technology.OLED is because of its luminosity height, rich color, low-voltage direct drive, preparation technology is simple etc. in flat panel display significant advantage, thereby becomes the focus of international research day by day.In less than the time in 20 years, OLED gets into the industrialization stage by research.

ORGANIC ELECTROLUMINESCENCE DISPLAYS is compared with other forms of demonstration, has an important advantage can realize flexible the demonstration exactly.Traditional OLED device adopts glass to make substrate, plates the anode of one deck ITO conductive film as display of organic electroluminescence above that, and flexible organic electro-luminescence shows that (FOLED) then replaced glass substrate with plastic.This class display spare softness can be out of shape and be not fragile, can be installed in curved surface, even can dress, thereby becomes the international research focus that shows industry day by day.Be described as " fantasy Display Technique " though flexible organic electro-luminescence shows, really realize commercialization, at first will solve following two underlying issues: the one, solution flexible base, board poor flatness, the defective that hydrophobicity is low; The 2nd, the water oxygen obstructing capacity of raising encapsulated layer.

The poor heat radiation of material will make heat energy be accumulated in the device, causes the light-emitting component overheating failure.In addition, device is if work under the hot environment, also should external environment condition be dropped to the influence of device work minimum, thereby guarantee the thermal stability of device inside.

The flexible package main flow is to adopt ceramic/polymer composite multilayer membrane scheme, ceramic membrane commonly used such as SiO at present x, Si 3N 4, Al 2O 3, polymer film such as fluorinated polymers (fluoropolymer), parylenes (parylene), polyacrylates (polyacrylate) etc., but the heat dissipation characteristics of this composite multilayer membrane is not satisfactory.

The utility model content

The technical problem that (one) will solve

Shortcoming to prior art; The technical problem that the utility model lost efficacy for the flexible organic electro-luminescence that solves existing substrate the obstructing capacity difference of water oxygen and heat radiation or heat insulation bad, temperature distributing disproportionation are caused; Through depositing the composite bed modification flexible base, board surface of inorganic high carbon film or inorganic high carbon film and polymer; And the inorganic high carbon film of design modification substrate is connected with the inorganic high-carbon pellicular cascade of encapsulated layer, has reached the technique effect of flexible organic electroluminescent device high thermal stability and high hydrophobicity.

(2) technical scheme

Solve the problems of the technologies described above, the utility model specifically adopts following scheme to carry out for this reason:

At first, the utility model provides a kind of flexible organic electroluminescent device, and said device comprises:

Substrate 1, substrate modified layer 2, organic electroluminescent parts 13 and encapsulated layer 10, said substrate modified layer 2 adopts the fringe region stepped construction to form with said encapsulated layer 10.

Preferably, said substrate 1 is the flexible base, board that metal, polymer or ultra-thin glass constitute.

Preferably, said substrate modified layer 2 and said encapsulated layer 10 constitutes composite bed jointly for the independent stratification of inorganic high-carbon film or inorganic high-carbon film and polymer.

Preferably, said inorganic high-carbon film is high-termal conductivity carbon film or high thermal insulation carbon film.

Preferably, said high-termal conductivity carbon film is diamond-film-like or fluoridizes diamond-film-like that said high thermal insulation carbon film is C 60Or C 60F 60

Preferably, said polymer is polymethyl methacrylate film, polyimide film, fluorinated polymers (fluoropolymer), paylenes (parylene), polyacrylates (polyacrylate) or acrylate monomer.

Preferably, said device is made up of flexible substrate 1, polymeric layer 11, inorganic high carbon thin film layer 12, organic electroluminescent parts 13, inorganic high carbon thin film layer 12, polymeric layer 11 from the bottom to top successively.

Preferably, said device is made up of flexible substrate 1, inorganic high carbon thin film layer 12, polymeric layer 11, organic electroluminescent parts 13, inorganic high carbon thin film layer 12, polymeric layer 11 from the bottom to top successively.

Preferably, said device is made up of flexible substrate 1, inorganic high carbon thin film layer 12, polymeric layer 11, organic electroluminescent parts 13, polymeric layer 11, inorganic high carbon thin film layer 12, polymeric layer 11, inorganic high carbon thin film layer 12 from the bottom to top successively.

Preferably, said organic electroluminescent parts 13 are made up of anode conductive layer 3, hole injection layer 4, hole transmission layer 5, luminescent layer 6, electron transfer layer 7, electron injecting layer 8, metallic cathode layer 9 each layer successively.

Preferably, to have one deck at least with said metallic cathode layer 9 be transparent or semitransparent to said anode conductive layer 3.

Preferably, said hole injection layer 4 is the double-deck hole injection layer that two-layer material constitutes.

Preferably, said luminescent layer 6 is the single or multiple lift structure, and wherein every layer is single-shot light body structure material or doped structure.

Preferably, said metallic cathode layer 9 constitutes the single or multiple lift structure by metallic film and/or alloy firm.

Preferably, said organic electroluminescent parts 13 also have the coupling cover layer on said metallic cathode layer 9.

Preferably, said device can curl, and illumination mode is top light emitting, bottom-emission or two-sided perspective mode.

Preferably, said organic electroluminescent parts 13 constitute said anode conductive layer 3 by the Ag of 100-300nm; V by 20nm 2O 5Constitute double-deck hole injection layer 4 jointly with the MTDATA of 130nm; NPB by 30nm constitutes said hole transmission layer 5; The said luminescent layer 6 of thickness 30nm; AlQ by 30nm 3Constitute said electron transfer layer 7; LiF by 5nm constitutes said electron injecting layer 8; Constitute double-level-metal cathode layer 9 jointly by the Al of 3nm and the Ag of 30nm.

Preferably, said organic electroluminescent parts 13 constitute said anode conductive layer 3 by the ITO of 100-300nm; V by 20nm 20 5Constitute double-deck hole injection layer 4 jointly with the MTDATA of 130nm; NPB by 30nm constitutes said hole transmission layer 5; The said luminescent layer 6 of thickness 30nm; AlQ by 30nm 3Constitute said electron transfer layer 7; LiF by 5nm constitutes said electron injecting layer 8; Al by 300nm constitutes said metallic cathode layer 9.

Preferably, said organic electroluminescent parts 13 constitute said anode conductive layer 3 by the ITO of 100-300nm; Mn0 by 20nm 3Constitute double-deck hole injection layer 4 jointly with the MTDATA of 130nm; NPB by 30nm constitutes said hole transmission layer 5; Constitute double-deck luminescent layer 6 jointly by thickness 12nm and thickness 22nm two-layer; AlQ by 30nm 3Constitute said electron transfer layer 7; LiF by 5nm constitutes said electron injecting layer 8; Constitute double-level-metal cathode layer 9 jointly by the Al of 3nm and the Ag of 30nm.

Preferably, said organic electroluminescent parts 13 constitute said anode conductive layer 3 by the Al of 100-300nm; Mn0 by 20nm 3Constitute double-deck hole injection layer 4 jointly with the MTDATA of 130nm; NPB by 30nm constitutes said hole transmission layer 5; Constitute double-deck luminescent layer 6 jointly by thickness 12nm and thickness 22nm two-layer; AlQ by 30nm 3Constitute said electron transfer layer 7; LiF by 5nm constitutes said electron injecting layer 8; Constitute double-level-metal cathode layer 9 jointly by the Al of 3nm and the Ag of 30nm.

(3) beneficial effect

The utility model utilization contains high hydrophobicity, high heat conduction or heat insulation inorganic high-carbon film modification flexible base, board; Make the wettability variation of substrate and aqueous vapor; Strengthen water and oxygen barrier property; Adopt the inorganic high-carbon film and the technical scheme that the inorganic high-carbon pellicular cascade of compound encapsulated layer is connected of flexible base, board upper surface, made the material of organic luminescent device and good heat radiation or insulative properties be combined into organic whole, formed accessible heat conduction or heat insulation path.Thereby flexible organic electroluminescent device thermal stability and hydrophobic performance have been improved.

Description of drawings

Fig. 1 is the flexible organic electroluminescent device structural representation that the utility model provided;

Fig. 2 is the structure chart of a kind of embodiment of flexible organic electroluminescent device that the utility model provided;

Fig. 3 is the structure chart of the another kind of embodiment of flexible organic electroluminescent device that the utility model provided;

Fig. 4 is the structure chart of another embodiment of flexible organic electroluminescent device that the utility model provided.

Embodiment

To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment is a part of embodiment of the utility model, rather than whole embodiment.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skills are obtained under the prerequisite of not making creative work belongs to the scope that the utility model is protected.

A kind of flexible organic electroluminescent device that provides in the utility model comprises substrate, substrate modified layer, preparation organic electroluminescent parts and flexible package layer in the above.

Metal substrate in this device or polymeric substrates are to carry out modification through inorganic high-carbon film; The all right double as device package thin layer of the inorganic high-carbon film of this modification; This inorganic high carbon thin film layer has strong heat conduction or heat-insulating capability, and has strong hydrophobicity.

Wherein, The inorganic high-carbon film of modification locates to adopt the fringe region stepped construction to be formed by stacking that (the inorganic high-carbon rete fringe region of different layers directly is deposited on together on the edge of; Different layers edge is not separated by other layers), constitute accessible heat conduction or heat insulation path.

Encapsulated layer is made up of inorganic high carbon film or inorganic high carbon film and polymer, and the number of plies can be single or multiple lift.

The structure of organic electroluminescent parts comprises:

First electrode is high reflective electrode or transparency electrode, constitutes anode conductive layer, and it is positioned on the inorganic high carbon thin film layer or inorganic high carbon thin film layer and polymer composite layer of substrate modified layer;

Second electrode is semitransparent electrode or opaque electrode, constitutes the metallic cathode layer, and it is positioned under the inorganic high carbon thin film layer or inorganic high carbon thin film layer and polymer composite layer of encapsulated layer;

It is transparent or semitransparent that above-mentioned two electrodes have the electrode of a side at least;

These organic electroluminescent parts also comprise double-deck hole injection layer, hole transmission layer, luminescent layer, electron transfer layer, electron injecting layer, and these layers are between said first electrode and said second electrode.

Wherein said flexible organic electroluminescent device can curl, and can be top light emitting, bottom-emission, also can be two-sided perspective.

Particularly; Referring to Fig. 1; The technical scheme of the utility model provides a kind of flexible organic electroluminescent device, comprises flexible substrate 1, substrate modified layer 2, preparation organic electroluminescent parts 13 (the 3-9 layer constitutes jointly among Fig. 1) and flexible package layer 10 in the above.Metal, polymer or ultra-thin substrate are to carry out modification through inorganic high-carbon film; This inorganic high-carbon film also can doublely be done the device package layer; Inorganic high-carbon film locates to adopt the fringe region stepped construction to be formed by stacking on the edge of, constitutes accessible passage of heat or heat shield.The vacuum compatible property permission of the utility model embodiment making technology is compatible with substrate modification, OLED deposition and OLED encapsulation on the same production line, produces input cost thereby reduce.

Wherein, flexible substrate 1 is the substrate of display of organic electroluminescence, and flexible substrate is made up of a kind of, thin metal or the ultra-thin glass in polyesters, the polyimide compound.

Substrate modified layer 2 and encapsulated layer 10 are the composite bed of inorganic high-carbon film or inorganic high-carbon film and polymer.Inorganic high-carbon film can be high-termal conductivity carbon film or high thermal insulation carbon film, and said high-termal conductivity carbon film is diamond-film-like or fluoridizes diamond-film-like, such thermal conductivity of thin film, conductivity height; Said high thermal insulation carbon film is C 60Or C 60F 60, such film has special stability, and thermal insulation is good, and the inner chamber of molecule central duct all is hydrophobic, and strong hydrophobicity effect is arranged.Said polymer is polymethyl methacrylate film, polyimide film, fluorinated polymers (fluoropolymer), parylenes (parylene), polyacrylates (polyacrylate), acrylate monomer etc.

The organic electroluminescent parts specifically comprise:

Anode conductive layer 3, but be generally transparent conducting metal oxide, like tin indium oxide (ITO), aluminum zinc oxide (AZO) or indium zinc oxide (IZO) etc.; Also can select opaque metal material for use, like silver, aluminium etc.

Hole injection layer 4, can adopt the polyamines 4,4 of CuPc, star ', 4 " three (N-3-aminomethyl phenyl-N-phenyl amino) triphenylamine (m-MTDATA), molybdenum trioxide (MnO 3), tungstic acid (WO 3) or vanadic oxide (V 2O 5) in a kind of, also can mix to hole-injecting material.Also can constitute double-deck hole injection layer jointly by two-layer above-mentioned substance.

Hole transmission layer 5 is aromatic diamine compounds or star triphenyl amine compound, or carbazole polymer.Said aromatic diamine compounds comprises N, N '-two (3-tolyl)-N, N '-diphenyl-[1; The 1-xenyl]-4,4 '-diamines (TPD) or N, N '-diphenyl-N; N '-two (1-naphthyl)-(1,1 '-xenyl)-4,4 '-diamines (NPB); Said star triphenyl amine compound is three-[4-(5-phenyl-2-thienyl) benzene] amine (PTDATA), and said carbazole polymer is to gather alkene carbazole (PVK).

Luminescent layer 6 can also can be the multi-luminescent layer structure for the single-shot photosphere; Every layer of luminescent layer can also can be doped structure for single-shot light body luminescent material structure; Luminescent dye can select for use fluorescent material also can select phosphor material for use; Glow color is not limit, can for as red, yellow, blue, green, white etc.

Electron transfer layer 7 is made up of a kind of in metal organic complex, pyridines, o-phenanthroline Lei 、 oxadiazole class or the glyoxaline compound material, like oxine aluminium (AlQ3), 2, and 9-methyl-4,7-biphenyl-1,10-phenanthrolene (BCP) etc.

Electron injecting layer 8 can be Cs 2CO 3, LiF or Li 3Any one formation such as N.

Metallic cathode layer 9, requiring has electric conductivity and lower work function preferably, generally includes lower metallic film or its alloy firms of work function such as lithium, magnesium, calcium, strontium, aluminium, indium, silver, also can be made up of above-mentioned metallic film of multilayer and/or alloy firm.

In addition, in order to obtain more performance, on metallic cathode layer 9, can also prepare one deck coupling cover layer (not shown).

Preferably, the mode that can take to describe among the following embodiment of the flexible organic electroluminescent device in the utility model constitutes.

Embodiment 1

Embodiment 1 as shown in Figure 2, flexible organic electroluminescent device are followed successively by flexible substrate 1, polymeric layer 11, inorganic high carbon thin film layer 12, organic electroluminescent parts 13, inorganic high carbon thin film layer 12, polymeric layer 11 from the bottom to top.The polymeric layer 11 of lower floor constitutes the substrate modified layer with inorganic high carbon thin film layer 12, and the inorganic high carbon thin film layer 12 on upper strata constitutes encapsulated layer with polymeric layer 11.The common formation of above-mentioned each layer fringe region stepped construction.

Wherein, 1 carries out modification on metal substrate, deposits the polymeric layer 11 of acrylate monomer (monomer) with the vacuum evaporation mode, and film thickness is 800～1000nm, ultraviolet irradiation modification 150s.Then adopt electron cyclotron resonace or radio frequency plasma body chemical vapor phase growing filming equipment deposition high-termal conductivity F-DLC thin layer 12, film thickness is 100～120nm, and the marginal dimension of design monomer region covered equals F-DLC film zone in the instance.

Vapor deposition top radiation organic EL parts 13 again, these parts 13 structures are Ag (100-300nm)/V 2O 5(20nm)/MTDATA (130nm)/NPB (30nm)/AlQ 3: (0.5-1.5%) C545T (30nm)/AlQ 3(30nm)/LiF (5nm)/Al (3nm)/Ag (30nm).Be described as successively: Ag (100-300nm) is the anode conductive layer 3 among Fig. 1; V 2O 5(20nm)/ double-deck hole injection layer 4 in the common pie graph 1 of MTDATA (130nm); NPB (30nm) is the hole transmission layer 5 among Fig. 1; AlQ 3: (0.5-1.5%) C545T (30nm) is the luminescent layer 6 among Fig. 1, and wherein 0.5-1.5% representes C545T and AlQ 3The vapor deposition speed ratio, 30nm is this layer main matter AlQ 3Vapor deposition thickness; AlQ 3(30nm) be electron transfer layer 7 among Fig. 1; LiF (5nm) is the electron injecting layer 8 among Fig. 1; Al (3nm)/Ag (30nm) is the metallic cathode layer 9 in the double-layer metal film pie graph 1.

On these organic electroluminescent parts 13; Adopt and surface modified substrate same process condition again; Use radio frequency plasma body chemical vapor phase growing mode to deposit 100～120nm F-DLC thin-film encapsulation layer 12; It is covered on the whole organic electroluminescence device, film edge and surface modified substrate fluoridize the diamond-film-like organic linking together, be beneficial to heat conduction.Last vapor deposition monomer encapsulated layer 11.

The heat energy that structure in the present embodiment helps device inside outwards discharges, and does not have direct communication passage compared to F-DLC film modified layer and encapsulated layer, and promote more than 30% device lifetime.

Embodiment 2

The structure of embodiment 2 and embodiment 1 are basic identical, specifically equally referring to Fig. 2, are that concrete composition is slightly had any different.Wherein flexible substrate 1 is a polymer, and polymeric layer 11 is an acrylate monomer, and inorganic high carbon thin film layer 12 is high thermal insulation C60 film, evaporation film-forming.

And the structure of organic electroluminescent parts 13 is:

ITO(100-300nm)/V 2O 5(20nm)/MTDATA(130nm)/NPB(30nm)/AlQ 3：(0.5-1.5％)C545T(30nm)/AlQ 3(30nm)/LiF(5nm)/Al(300nm)。Wherein, C545T is 10-(2-[4-morpholinodithio)-1,1,7,7;-tetramethyl-2,3,6,7-tetrahydrochysene-1H, 5H; The abbreviation of 11H-benzo [1] pyrans [6,7,8-ij] quinoline piperazine, the structure of present embodiment is described as successively: ITO (100-300nm) is the anode conductive layer 3 among Fig. 1; V 2O 5(20nm)/ double-deck hole injection layer 4 in the common pie graph 1 of MTDATA (130nm); NPB (30nm) is the hole transmission layer 5 among Fig. 1; AlQ 3: (0.5-1.5%) C545T (30nm) is the luminescent layer 6 among Fig. 1, and wherein 0.5-1.5% representes C545T and AlQ 3The vapor deposition speed ratio, 30nm is this layer main matter AlQ 3Vapor deposition thickness; AlQ 3(30nm) be electron transfer layer 7 among Fig. 1; LiF (5nm) is the electron injecting layer 8 among Fig. 1; Al (300nm) is the metallic cathode layer 9 among Fig. 1.

Other structures and preparation flow are similar with embodiment 1.The structure of present embodiment can effectively completely cut off atmosphere such as ambient temperature and water oxygen, and under hot and humid environment, obviously promote more than 20% device lifetime.

Embodiment 3

Embodiment 3 as shown in Figure 3, flexible organic electroluminescent device are followed successively by flexible substrate 1, inorganic high carbon thin film layer 12, polymeric layer 11, organic electroluminescent parts 13, inorganic high carbon thin film layer 12, polymeric layer 11 from the bottom to top.Wherein flexible substrate 1 is a polymer, and polymeric layer 11 is an acrylate monomer, and inorganic high carbon thin film layer 12 is for fluoridizing diamond-film-like.The common formation of above-mentioned each layer fringe region stepped construction.

The structure of organic electroluminescent parts 13 is: ITO (100-300nm)/MnO 3(20nm)/and MTDATA (130nm)/NPB (30nm)/NPB: (1-2%) rubrene (12nm)/ADN: (2-4%) TBPe (22nm)/AlQ 3(30nm)/LiF (5nm)/Al (3nm)/Ag (30nm).Wherein, rubrene is 5,6,11, and 12-tetraphenyl aphthacene (being commonly called as rubrene), ADN are 9, and 10-two (2-naphthyl) anthracene, TBPe are four uncle Ding Ji perylenes.The structure of present embodiment is described as successively: ITO (100-300nm) is the anode conductive layer 3 among Fig. 1; MnO 3(20nm)/ double-deck hole injection layer 4 in the common pie graph 1 of MTDATA (130nm); NPB (30nm) is the hole transmission layer 5 among Fig. 1; NPB: (1-2%) rebrene (12nm)/ADN: (2-4%) TBPe (22nm) is the luminescent layer 6 among Fig. 1 of sandwich construction; Wherein 1-2% representes the vapor deposition speed ratio of rubrene and NPB; 12nm is this layer main matter NPB vapor deposition thickness; 2-4% representes the vapor deposition speed ratio of TBPe and ADN, and 22nm is this layer main matter ADN vapor deposition thickness; AlQ 3(30nm) be electron transfer layer 7 among Fig. 1; LiF (5nm) is the electron injecting layer 8 among Fig. 1; Al (3nm)/Ag (30nm) is the metallic cathode layer 9 in the double-layer metal film pie graph 1.

Wherein, DLC film layer 12 is fluoridized less than the substrate modified layer in the polymeric layer 11 depositional area edges of substrate modified layer; And in the present embodiment, the polymeric layer 11 depositional area edges of substrate modified layer are also fluoridized more than the little 1mm of DLC film layer 12 depositional area marginal dimension than encapsulated layer; Encapsulated layer is fluoridized DLC film layer 12 depositional area and is directly covered organic luminous component, and with substrate modified layer fluorinated dlc layer thin layer direct range upon range of connection of 12 fringe regions, constitute organic whole.Each functional layer preparation technology and embodiment 1 are similar.

Embodiment 4

Embodiment 4 as shown in Figure 4, flexible organic electroluminescent device are followed successively by flexible substrate 1, inorganic high carbon thin film layer 12, polymeric layer 11, organic electroluminescent parts 13, polymeric layer 11, inorganic high carbon thin film layer 12, polymeric layer 11, inorganic high carbon thin film layer 12 from the bottom to top.Wherein flexible substrate 1 is a metal, and polymeric layer 11 is an acrylate monomer, and inorganic high carbon thin film layer 12 is for fluoridizing diamond-film-like.The common formation of above-mentioned each layer fringe region stepped construction.

The structure of organic electroluminescent parts 13 is: Al (100-300nm)/MnO 3(20nm)/and MTDATA (130nm)/NPB (30nm)/NPB: (1-2%) rubrene (12nm)/ADN: (2-4%) TBPe (18nm)/AlQ 3(30nm)/LiF (5nm)/Al (3nm)/Ag (30nm).Be described as successively: Al (100-300nm) is the anode conductive layer 3 among Fig. 1; MnO 3(20nm)/ double-deck hole injection layer 4 in the common pie graph 1 of MTDATA (130nm); NPB (30nm) is the hole transmission layer 5 among Fig. 1; NPB: (1-2%) rubrene (12nm)/ADN: (2-4%) TBPe (18nm) is the luminescent layer 6 among Fig. 1 of sandwich construction; Wherein 1-2% representes the vapor deposition speed ratio of rubrene and NPB; 12nm is this layer main matter NPB vapor deposition thickness; 2-4% representes the vapor deposition speed ratio of TBPe and ADN, and 18nm is this layer main matter ADN vapor deposition thickness; AlQ 3(30nm) be electron transfer layer 7 among Fig. 1; LiF (5nm) is the electron injecting layer 8 among Fig. 1; Al (3nm)/Ag (30nm) is the metallic cathode layer 9 in the double-layer metal film pie graph 1.

In this instance, DLC film layer 12 is fluoridized less than the substrate modified layer in the polymeric layer 11 depositional area edges of substrate modified layer; Polymeric layer 11 depositional areas of encapsulated layer directly cover organic luminous component; And in the present embodiment; Polymeric layer 11 depositional areas of encapsulated layer are fluoridized more than the little 1mm of DLC film layer 12 depositional area marginal dimension than encapsulated layer; All edges of fluoridizing DLC film layer 12 are directly to be stacked in together, and substrate modified layer and encapsulated layer adopt multilayer form.Each functional layer preparation technology and embodiment 1 are similar.

With respect to prior art; The utility model utilization contains high hydrophobicity, high heat conduction or heat insulation inorganic high-carbon film modification flexible base, board; Make the wettability variation of substrate and aqueous vapor to strengthen water and oxygen barrier property the technical scheme that has adopted the inorganic high-carbon film of flexible base, board upper surface to be connected with the inorganic high-carbon pellicular cascade of compound encapsulated layer; Make the material of organic luminescent device and good heat radiation or insulative properties be combined into organic whole, form accessible heat conduction or heat insulation path.Thereby flexible organic electroluminescent device thermal stability and hydrophobic performance have been improved.

Above execution mode only is used to explain the utility model; And be not the restriction to the utility model; The those of ordinary skill in relevant technologies field under the situation of spirit that does not break away from the utility model and scope, can also be made various variations and modification; Therefore all technical schemes that are equal to also belong to the category of the utility model, and the real protection scope of the utility model should be defined by the claims.

Claims (20)

1. a flexible organic electroluminescent device is characterized in that, said device comprises:
Substrate (1), substrate modified layer (2), organic electroluminescent parts (13) and encapsulated layer (10), said substrate modified layer (2) adopts the fringe region stepped construction to form with said encapsulated layer (10).
2. device according to claim 1 is characterized in that, said substrate (1) is the flexible base, board that metal, polymer or ultra-thin glass constitute.
3. device according to claim 1 is characterized in that, said substrate modified layer (2) and said encapsulated layer (10) constitute composite bed jointly for the independent stratification of inorganic high-carbon film or inorganic high-carbon film and polymer.
4. device according to claim 3 is characterized in that, said inorganic high-carbon film is high-termal conductivity carbon film or high thermal insulation carbon film.
5. device according to claim 4 is characterized in that, said high-termal conductivity carbon film is diamond-film-like or fluoridizes diamond-film-like that said high thermal insulation carbon film is C 60Or C 60F 60
6. device according to claim 3 is characterized in that, said polymer is polymethyl methacrylate film, polyimide film, fluoropolymer, parylene, polyacrylate or acrylate monomer.
7. device according to claim 3; It is characterized in that said device is made up of flexible substrate (1), polymeric layer (11), inorganic high carbon thin film layer (12), organic electroluminescent parts (13), inorganic high carbon thin film layer (12), polymeric layer (11) from the bottom to top successively.
8. device according to claim 3; It is characterized in that said device is made up of flexible substrate (1), inorganic high carbon thin film layer (12), polymeric layer (11), organic electroluminescent parts (13), inorganic high carbon thin film layer (12), polymeric layer (11) from the bottom to top successively.
9. device according to claim 3; It is characterized in that said device is made up of flexible substrate (1), inorganic high carbon thin film layer (12), polymeric layer (11), organic electroluminescent parts (13), polymeric layer (11), inorganic high carbon thin film layer (12), polymeric layer (11), inorganic high carbon thin film layer (12) from the bottom to top successively.
10. according to the arbitrary described device of claim 1-9; It is characterized in that said organic electroluminescent parts (13) are made up of anode conductive layer (3), hole injection layer (4), hole transmission layer (5), luminescent layer (6), electron transfer layer (7), electron injecting layer (8), each layer of metallic cathode layer (9) successively.
11. device according to claim 10 is characterized in that, it is transparent or semitransparent that said anode conductive layer (3) has one deck at least with said metallic cathode layer (9).
12. device according to claim 10 is characterized in that, said hole injection layer (4) is the double-deck hole injection layer that two-layer material constitutes.
13. device according to claim 10 is characterized in that, said luminescent layer (6) is the single or multiple lift structure, and wherein every layer is single-shot light body structure material or doped structure.
14. device according to claim 10 is characterized in that, said metallic cathode layer (9) constitutes the single or multiple lift structure by metallic film and/or alloy firm.
15. device according to claim 10 is characterized in that, said organic electroluminescent parts (13) also have the coupling cover layer on said metallic cathode layer (9).
16. device according to claim 1 is characterized in that, said device can curl, and illumination mode is top light emitting, bottom-emission or two-sided perspective mode.
17. device according to claim 10 is characterized in that, said organic electroluminescent parts (13) constitute said anode conductive layer (3) by the Ag of 100-300nm; V by 20nm 2O 5Constitute double-deck hole injection layer (4) jointly with the MTDATA of 130nm; NPB by 30nm constitutes said hole transmission layer (5); The said luminescent layer (6) of thickness 30nm; AlQ by 30nm 3Constitute said electron transfer layer (7); LiF by 5nm constitutes said electron injecting layer (8); Constitute double-level-metal cathode layer (9) jointly by the Al of 3nm and the Ag of 30nm.
18. device according to claim 10 is characterized in that, said organic electroluminescent parts (13) constitute said anode conductive layer (3) by the ITO of 100-300nm; V by 20nm 2O 5Constitute double-deck hole injection layer (4) jointly with the MTDATA of 130nm; NPB by 30nm constitutes said hole transmission layer (5); The said luminescent layer (6) of thickness 30nm; AlQ by 30nm 3Constitute said electron transfer layer (7); LiF by 5nm constitutes said electron injecting layer (8); Al by 300nm constitutes said metallic cathode layer (9).
19. device according to claim 10 is characterized in that, said organic electroluminescent parts (13) constitute said anode conductive layer (3) by the ITO of 100-300nm; MnO by 20nm 3Constitute double-deck hole injection layer (4) jointly with the MTDATA of 130nm; NPB by 30nm constitutes said hole transmission layer (5); Constitute double-deck luminescent layer (6) jointly by thickness 12nm and thickness 22nm two-layer; AlQ by 30nm 3Constitute said electron transfer layer (7); LiF by 5nm constitutes said electron injecting layer (8); Constitute double-level-metal cathode layer (9) jointly by the Al of 3nm and the Ag of 30nm.
20. device according to claim 10 is characterized in that, said organic electroluminescent parts (13) constitute said anode conductive layer (3) by the Al of 100-300nm; MnO by 20nm 3Constitute double-deck said hole injection layer (4) jointly with the MTDATA of 130nm; NPB by 30nm constitutes said hole transmission layer (5); Constitute double-deck luminescent layer (6) jointly by thickness 12nm and thickness 22nm two-layer; A1Q by 30nm 3Constitute said electron transfer layer (7); LiF by 5nm constitutes said electron injecting layer (8); Constitute double-level-metal cathode layer (9) jointly by the Al of 3nm and the Ag of 30nm.
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