CN106463629A

CN106463629A - Light emitting device and electronic equipment

Info

Publication number: CN106463629A
Application number: CN201580015629.6A
Authority: CN
Inventors: 加藤直树; 内田昌宏; 伊藤大树
Original assignee: Merck Patent GmbH; Seiko Epson Corp
Current assignee: Merck Patent GmbH; Seiko Epson Corp
Priority date: 2014-03-27
Filing date: 2015-03-18
Publication date: 2017-02-22
Anticipated expiration: 2035-03-18
Also published as: KR102349544B1; JP6681839B2; WO2015144298A1; KR20170009836A; JP2017522713A; TW201603262A; JP2015191978A; CN106463629B; TWI737577B

Abstract

A light emitting device of the present invention includes anodes; a cathode; and positive hole transport layers provided between the anodes and the cathode; light emitting functional layers provided between the positive hole transport layers and the cathode in a state of being in contact with the positive hole transport layers; a positive hole transport layer provided between the positive hole transport layer and the cathode in a state of being in contact with the positive hole transport layer and provided between the cathode and the light emitting functional layers in a state of being in contact with the light emitting functional layers; and a light emitting functional layer provided between the positive hole transport layer and the cathode in a state of being in contact with the positive hole transport layer, in which the thickness of the positive hole transport layer is 2 nm or less.

Description

Luminescent device and electronic installation

[technical field]

The present invention relates to a kind of luminescent device and electronic installation.

[background technology]

Organic electroluminescent device (so-called organic EL element) is that have wherein to insert at least between the anode and the cathode The light-emitting component of the structure of one luminescent layer.In this light-emitting component, make electricity by applying electric field between a cathode and an anode Son injects luminescent layer from cathode side and hole (positive hole) injects luminescent layer from anode-side, by multiple in luminescent layer Close (recombing) electronics and hole produces exciton, and release energy as light while exciton is back to ground state.

For example, when using light emitting element configuration display device, by the element respectively glowing, the element of green light with turn blue The element of light is used in the form of a combination thereof, as disclosed in such as JP 2011/029666 A.In JP 2011/ Luminescent device disclosed in 029666 A includes the light-emitting component with red light emitting layer, the light-emitting component with green light emitting layer With the light-emitting component with blue light-emitting layer, and described blue light-emitting layer be formed at as common layer (common layer) described On red light emitting layer and described green light emitting layer.Form red light emitting layer and green light emitting layer by using liquid phase method such as ink-jet method And form blue light-emitting layer and as another on the cathode side of described blue light-emitting layer by using the vapor phase method of such as sedimentation Outer layer forms common layer, can effectively manufacture light-emitting component.

However, the luminescent device disclosed in JP 2011/029666 A has problems in that, carrier passes in hole The transporting of the interface between defeated layer and blue light-emitting layer is poor and luminous efficiency is low, this is because logical in the element of blue light-emitting The blue light-emitting layer crossing vapor phase method formation is set directly on the hole transmission layer being formed by liquid phase method.

[content of the invention]

[technical problem]

It is an object of the invention to provide a kind of luminescent device and the electronic installation including this luminescent device, described luminous organ Part includes multiple light-emitting components (the first light-emitting component and the second light-emitting component) with glow color different from each other, improves each The luminous efficiency of individual light-emitting component, and being capable of high efficiency manufacture.

[solution to problem]

Complete the present invention in order to solve at least a portion the problems referred to above and be capable of by following pattern or application examples The present invention.

(application examples 1)

The luminescent device of the present invention includes：First light-emitting component, it includes the first anode, common cathode (common Cathode), it is arranged on the first hole transmission layer between the described first anode and described common cathode and with described first The state of hole transmission layer contact is arranged on the first light emitting functional layer between described first hole transmission layer and described common cathode； With the second light-emitting component, it include second plate, common cathode, be arranged between described second plate and described common cathode second Hole transmission layer, it is arranged on described second hole transmission layer and described common cathode with the state contacting with described second hole transmission layer Public hole transmission layer between pole and described public hole is arranged on the state contacting with described public hole transmission layer The second light emitting functional layer between transport layer and described common cathode, wherein said public hole transmission layer is with luminous with described first The state of functional layer contact is arranged between described common cathode and described first light emitting functional layer, and described public hole transmission layer Thickness be 2nm or less.

According to described luminescent device, it is possible to use liquid phase method forms the first hole transmission layer, the first light emitting functional layer respectively With the second hole transmission layer for each element respectively it is possible to jointly be formed respectively on two elements using vapor phase method Public hole transmission layer and the second light emitting functional layer.Therefore, it is possible to high efficiency manufacture first light-emitting component and the second light-emitting component.

When forming the first light-emitting component and the second light-emitting component in this way, can will use and the second light emitting functional layer The public hole transmission layer that vapor phase method identical vapor phase method is formed be arranged on the second light emitting functional layer in the second light-emitting component with Between second hole transmission layer, and thus when with the wherein second hole transmission layer contact laminating by with the second hole transmission layer Different the second light emitting functional layer of manufacture method manufacture of manufacture method on situation when comparing, with carrier in the second hole Mobile related electronic barrier (electrical barrier) between transport layer and the second light emitting functional layer can reduce.Cause This, carrier (hole) smooth transport to the second light emitting functional layer is such that it is able to improve luminous efficiency.

On the other hand, in the first light-emitting component, due to be arranged on the first light emitting functional layer and the second light emitting functional layer it Between public hole transmission layer very thin, so carrier (electronics) can be delivered to the first lighting function from the second light emitting functional layer Layer.Therefore, in the first light-emitting component so that the first light emitting functional layer can optionally light and the second light emitting functional layer not Luminous.

Additionally, because public hole transmission layer is very thin, can suppress to be made by the public hole transmission layer being disposed there between The first light-emitting component becoming and the rising of the driving voltage of the second light-emitting component.

For these reasons, comprising multiple light-emitting components (first light-emitting component with glow color different from each other With the second light-emitting component) described luminescent device in, can improve each light-emitting component luminous efficiency and can be described in high efficiency manufacture Luminescent device.

(application examples 2)

In the luminescent device of the present invention it is preferred that using liquid phase method formed respectively the first hole transmission layer, first Light functional layer and the second hole transmission layer, and form public hole transmission layer and the second light emitting functional layer respectively using vapor phase method.

Therefore, can high efficiency manufacture first light-emitting component and the second light-emitting component.

(application examples 3)

It is preferred that constructing the first hole transport using high-molecular hole conduction material in the luminescent device of the present invention Layer, and construct described second hole transmission layer and described public hole transmission layer respectively using low molecule hole mobile material.

In this way, can efficiently be formed with high dimensional accuracy (dimensional precision) using liquid phase method The first hole transmission layer.In addition, forming the first light emitting functional layer and the first hole transmission layer, carrier by using liquid phase method (hole) can smoothly from the first hole transport layer transports to the first light emitting functional layer.

And, can efficiently form second hole transmission layer with high dimensional accuracy using vapor phase method and public hole passes Defeated layer.Especially, forming public hole transmission layer by using vapor phase method can be to have high accuracy (excellent controllability) Mode form very thin public hole transmission layer.Even if additionally, when by implementing manufacture method formation second different from each other When hole transmission layer and public hole transmission layer, carrier (hole) still is able to smoothly from the second hole transport layer transports to public affairs Hole transmission layer altogether, this is because the hole mobile material of composition the second hole transmission layer and public hole transmission layer is both Low molecule.

(application examples 4)

It is preferred that being had and public hole transmission layer constituent material by comprising in the luminescent device of the present invention The material of the same or similar characteristic of characteristic, constructs described second hole transmission layer.

In this way, carrier (hole) smoothly can pass through described public hole transmission layer from the second hole transmission layer It is transferred to described second light emitting functional layer.

(application examples 5)

It is preferred that the constituent material of public hole transmission layer has electronic blocking in the luminescent device of the present invention Matter.

In this way, by using the electronic blocking property of the public hole transmission layer in the second light-emitting component, can make Second light emitting functional layer High Efficiency Luminescence.On the contrary, in the first light-emitting component, when the electronic blocking property pole of public hole transmission layer Gao Shi, the first light emitting functional layer does not light or luminous efficiency is decreased obviously.Therefore, in this case, by making public hole The minimum electronic blocking property to reduce public hole transmission layer in the first light-emitting component of thickness of transport layer is exceedingly useful.

(application examples 6)

It is preferred that the constituent material of the first light emitting functional layer is made by low molecule material in the luminescent device of the present invention Constitute for main material.

In this way, can compensate for the decline of the luminous efficiency of the first light-emitting component, this is because the described public sky of setting Cave transport layer, improves the luminous efficiency of the first light emitting functional layer.As a result, between the first light-emitting component and the second light-emitting component Light transmitting being capable of excellent balance.

(application examples 7)

It is preferred that the thickness of public hole transmission layer is 1nm or less in the luminescent device of the present invention.

In this way, in the first light-emitting component, by reducing the electronic blocking property of public hole transmission layer, carrier (electronics) efficiently can be delivered to the first light emitting functional layer from the second light emitting functional layer.

(application examples 8)

Preferably, in the luminescent device of the present invention, the 3rd light-emitting component includes third anode, common cathode, is arranged on The 3rd hole transmission layer between described third anode and described common cathode and to contact with described 3rd hole transmission layer State is arranged on the 3rd light emitting functional layer between described 3rd hole transmission layer and described common cathode, described public hole transport Layer is contacted with described 3rd light emitting functional layer, and described first light-emitting component, described second light-emitting component light with the described 3rd Element has glow color different from each other.

In this way, there is the first light-emitting component, second light-emitting component and the 3rd of glow color different from each other in inclusion Luminous efficiency the luminescent device described in high efficiency manufacture of each light-emitting component in the luminescent device of light-emitting component, can be improved.

(application examples 9)

It is preferred that the glow color of described first light-emitting component is red in the luminescent device of the present invention, described the The glow color of two light emitting is blue, and the glow color of described 3rd light-emitting component is green.

In this way, in the luminescent device of the element of the element, the element of green light and blue light-emitting that inclusion glows, can To improve the luminous efficiency of each light-emitting component high efficiency manufacture luminescent device.Therefore, it is possible to provide can be efficient at low cost Implement the luminescent device of total colouring.

(application examples 10)

The electronic installation of the present invention includes the luminescent device of the present invention.

According to this electronic installation, because described electronic installation includes the luminescent device of efficiency high and low cost, so can Cost of implementation and the reduction of power consumption.

[brief description]

Fig. 1 is the cross-sectional view showing the luminescent device (display device) according to an embodiment of the invention.

Fig. 2A is the figure manufacturing the method for luminescent device shown in Fig. 1 for description.

Fig. 2 B is the figure manufacturing the method for luminescent device shown in Fig. 1 for description.

Fig. 2 C is the figure manufacturing the method for luminescent device shown in Fig. 1 for description.

Fig. 2 D is the figure manufacturing the method for luminescent device shown in Fig. 1 for description.

Fig. 3 A is the figure manufacturing the method for luminescent device shown in Fig. 1 for description.

Fig. 3 B is the figure manufacturing the method for luminescent device shown in Fig. 1 for description.

Fig. 3 C is the figure manufacturing the method for luminescent device shown in Fig. 1 for description.

Fig. 3 D is the figure manufacturing the method for luminescent device shown in Fig. 1 for description.

Fig. 4 A is the figure manufacturing the method for luminescent device shown in Fig. 1 for description.

Fig. 4 B is the figure manufacturing the method for luminescent device shown in Fig. 1 for description.

Fig. 4 C is the figure manufacturing the method for luminescent device shown in Fig. 1 for description.

Fig. 5 is the perspective of the construction showing movement (or on knee) personal computer as electronic installation example of the present invention Figure.

Fig. 6 is the perspective view showing the construction of mobile phone (including PHS) as electronic installation example of the present invention.

Fig. 7 be show digital still as electronic installation example of the present invention (？) photographing unit construction perspective view.

Fig. 8 A is to show embodiment 1,9 and 10 and the figure in the life-span of light-emitting component of G pixel in comparative example 1 and 2.

Fig. 8 B is to show embodiment 1 and 10 and the figure in the life-span of light-emitting component of B pixel in comparative example 1 and 2.

[specific embodiment]

Hereinafter, the preferred implementation with reference to shown in figure is said to the luminescent device of the present invention and electronic installation Bright.Additionally, in order to describe simplicity, in each figure suitable change having been carried out to the ratio of unit, being therefore shown in figure The ratio of construction need not be with its actual ratio match.

[luminescent device]

First, the display device as luminescent device example of the present invention will be illustrated.

Fig. 1 is the cross-sectional view showing the luminescent device (display device) according to an embodiment of the invention.In addition, Hereinafter, in order to describe simplicity, it is referred to as " downside " by the side relatively gone up in Fig. 1 referred to as " upside " and by relatively low side in Fig. 1.

Luminescent device 100 shown in Fig. 1 has and sub-pixel 100R (R pixel), 100G (G pixel) and 100B (B picture Element) corresponding multiple light-emitting component 1R, 1G and 1B constitute the display floater with bottom-emission structure.In addition, in this enforcement In mode, wherein it is described as the drive system of display device using the example of active matrix system, but passive square can be adopted Array 1 system.

Luminescent device 100 includes：Circuit substrate 20；It is arranged on multiple light-emitting component 1R, 1G and the 1B on circuit substrate 20； With hermetic sealing substrate 40.

Circuit substrate 20 include substrate 21, setting interlayer dielectric 22 on the base plate (21, multiple switch element 23 and Multiple electric wires 24.

Substrate 21 is substantially transparent (colorless and transparent, colored and transparent or translucent).For this reason, can be from substrate The light from each light-emitting component 1R, 1G and 1B is extracted in 21 sides.The example of the constituent material of substrate 21 includes：Resin material is as gathered Ethylene glycol terephthalate, PEN, polypropylene, cyclic olefin polymer, polyamide, polyether sulfone, poly- first Base acrylic acid methyl ester., Merlon or polyarylate；With glass material such as quartz glass or soda-lime glass, and can be in combination Using one or more these material.

Additionally, when using wherein from the top light emitting of the light of substrate 21 opposite side extraction source self-emission device 1R, 1G and 1B During structure, substrate 21 can be opaque substrate.The example of opaque substrate includes：Ceramic material construction by such as aluminium oxide Substrate；Such as stainless metal basal board, its surface is formed by oxidation film (dielectric film)；With the base being constructed by resin material Plate.

Multiple switch element 23 is arranged in matrix on the base plate (21.Each switch element 23 correspond to each and lights Element 1R, 1G and 1B arrange and are the transistors for driving each light-emitting component 1R, 1G and 1B.

Each switch element 23 includes：The semiconductor layer 231 be made up of silicon, the grid being formed on semiconductor layer 231 are exhausted Edge layer 232, the grid 233 being formed on gate insulator 232, source electrode 234 and drain electrode 235.

Formed by the interlayer dielectric 22 of insulation construction in the way of covering multiple switch element 23.Electric wire 24 is set Put on interlayer dielectric 22.

Each switch element 23 corresponding with 1B to light-emitting component 1R, 1G is arranged on interlayer dielectric 22.In this embodiment party In formula, in the way of launching red color (R) light, construct light-emitting component 1R, construct luminous unit in the way of launching green color (G) light Part 1G, and construct light-emitting component 1B in the way of launching blue color (B) light.

Specifically, by anode 3R (first electrode), hole injection layer 4R, hole are sequentially laminated on interlayer dielectric 22 Transport layer 5R (the first hole transmission layer), light emitting functional layer 6R (the first light emitting functional layer), hole transmission layer 7 (public hole biography Defeated layer), light emitting functional layer 6B (the second light emitting functional layer), electron transfer layer 8, electron injecting layer 9 and negative electrode 10 (common cathode), structure Make light-emitting component 1R (the first light-emitting component).

In the same manner, by be sequentially laminated on interlayer dielectric 22 anode 3G (the 3rd electrode), hole injection layer 4G, Hole transmission layer 5G (the 3rd hole transmission layer), light emitting functional layer 6G (the 3rd light emitting functional layer), hole transmission layer 7 (public sky Cave transport layer), light emitting functional layer 6B (the second light emitting functional layer), electron transfer layer 8, electron injecting layer 9 and negative electrode 10 (common cathode Pole), construction light-emitting component 1G (the 3rd light-emitting component).

On the other hand, by anode 3B (second electrode), hole injection layer 4B, sky are sequentially laminated on interlayer dielectric 22 Cave transport layer 5B (the second hole transmission layer), hole transmission layer 7 (public hole transmission layer (intermediate layer)), light emitting functional layer 6B (the second light emitting functional layer), electron transfer layer 8, electron injecting layer 9 and negative electrode 10 (common cathode), construct light-emitting component 1B (second Light-emitting component).

Herein, anode 3R, 3G and 3B constitutes pixel electrode, and described pixel electrode is for each corresponding light-emitting component 1R, 1G Drain electrode that be separately provided with 1B and be electrically connected to switch element 23 by electric wire 24.In addition, hole injection layer 4R, 4G and 4B, Hole transmission layer 5R, 5G and 5B, light emitting functional layer 6R and light emitting functional layer 6G are mono- for each corresponding light-emitting component 1R, 1G and 1B Solely arrange.Additionally, hereinafter, light-emitting component 1R, 1G and 1B are referred to as " light-emitting component 1 ", anode 3R, 3G and 3B are referred to as For " anode 3 ", hole injection layer 4R, 4G and 4B are referred to as " hole injection layer 4 ", and hole transmission layer 5R, 5G and 5B are united Referred to as " hole transmission layer 5 ".

On the other hand, negative electrode 10 constitutes the public electrode being co-located in light-emitting component 1R, 1G and 1B.Additionally, by sky Cave transport layer 7 (public hole transmission layer), light emitting functional layer 6B, electron transfer layer 8 and electron injecting layer 9 are co-located on luminous In element 1R, 1G and 1B.

According to luminescent device 100, it is possible to use liquid phase method is that each element respectively independently forms hole transmission layer 5R, 5G And 5B, and light emitting functional layer 6R and 6G are it is possible to jointly form hole transmission layer 7 respectively using vapor phase method on three elements With light emitting functional layer 6B.Therefore, it is possible to high efficiency manufacture light-emitting component 1R, 1G and 1B.

When forming light-emitting component 1R, 1G and 1B in this way, can be by using the vapor phase method phase with light emitting functional layer 6B The hole transmission layer 7 that same vapor phase method is formed is arranged between the hole transmission layer 5B of light-emitting component 1B and light emitting functional layer 6B, And thus when from its hole-transporting layer 5B contact laminating by the manufacturer different with the manufacture method of hole transmission layer 5B When situation in light emitting functional layer 6B of method manufacture is compared, and carrier is between hole transmission layer 5B and light emitting functional layer 6B Mobile related electronic barrier may reduce.Therefore, carrier (hole) smooth transport is to light emitting functional layer 6B such that it is able to carry High-luminous-efficiency.

The spacer being constructed by resin material 31 (dike) is arranged among adjacent light-emitting component 1R, 1G and 1B.In addition, By by such as epoxy resin thermosetting resin construction resin bed 32 by hermetic sealing substrate 40 be adhered to light-emitting component 1R, 1G and 1B.

Because each light-emitting component 1R, 1G and 1B of present embodiment are bottom emission type as above, so sealing Substrate 40 can be transparency carrier or opaque substrate and the material identical material with aforesaid substrate 21 can be used as sealing The constituent material of substrate 40.

Hereinafter, light-emitting component 1R, 1G and 1B will be illustrated.

In light-emitting component 1R, 1G and 1B, electronics supplies (injection) with respect to light emitting functional layer 6R, 6G and 6B from negative electrode 10 And (injection) is supplied from anode 3R, 3G and 3B in hole.In addition, in light emitting functional layer 6R, 6G and 6B, hole and electronics are multiple each other Close, exciton (exciton (excitor)) is produced by the energy discharging in compound period, and when exciton state is back to ground state When release (transmitting) energy (fluorescence or phosphorescence).

Herein, light emitting functional layer 6B is arranged in light-emitting component 1R and 1G, but light emitting functional layer 6R and 6G are selected Light to property and light emitting functional layer 6B does not light.In this way, light-emitting component 1R, 1G and 1B launches the light of red color, green respectively The light of color and the light of blue color.

Hereinafter, will be briefly described the construction of the unit of light-emitting component 1R, 1G and 1B.

[anode]

Anode 3 (3R, 3G and 3B) is the electrode that hole is injected hole injection layer 4 (4R, 4G and 4B).Preferably use respectively There is the constituent material as anode 3R, 3G and 3B for the material of big work function and superior electrical conductivity.

The instantiation of the constituent material of anode 3R, 3G and 3B includes：Oxide such as indium tin oxide (ITO), indium zinc oxygen Compound (IZO), In₃O₃、SnO₂, containing Sb SnO₂Or the ZnO containing Al；Au, Pt, Ag, Cu or the alloy comprising them, and can In a joint manner using one or more these material.Additionally, the constituent material of anode 3R, 3G and 3B can be mutually the same or not With, but anode 3R, 3G and 3B can be formed using identical material is unified, thus improving productivity ratio.

[hole injection layer]

Hole injection layer 4 (4R, 4G and 4B) has the work(improving the hole injection efficiency from anode 3 (3R, 3G and 3B) Energy.

The example of the constituent material (hole-injecting material) of hole injection layer 4R, 4G and 4B is not particularly limited, including：Mixed Compound (PEDOT:PSS), wherein poly styrene sulfonate (PSS) is added to such as Polyglycolic acid fibre as dopant (PEDOT) polythiofuran derivative；Polystyrene；Polypyrrole；Polyaniline；Oligomer of phenylamine；Polyacetylene；And its height of derivant Molecular cavities injection material, and can be in a joint manner using one or more these material.Additionally, hole injection layer 4R, 4G Can be same to each other or different to each other with the constituent material of 4B, but when the constituent material of hole injection layer 4R, 4G and 4B is mutually the same, Can be formed at low cost and there is high production rate and stable hole injection layer 4R, 4G and 4B.

The thickness of hole injection layer 4R, 4G and 4B is not particularly limited, preferably in the range of 10nm～150nm, more excellent It is selected in the range of 20nm～100nm.

[hole transmission layer]

Hole transmission layer 5R (the first hole transmission layer) have by by hole injection layer 4R from anode 3R injected holes It is transferred to the function of light emitting functional layer 6R.In the same manner, hole transmission layer 5G (the 3rd hole transmission layer) has by sky Cave implanted layer 4G is transferred to the function of light emitting functional layer 6G from anode 3G injected holes.

In addition, hole transmission layer 5R has electronic blocking property and prevents from leading to sky because of electronics intrusion hole injection layer 4R The function of the function reduction of cave implanted layer 4R.Similarly, hole transmission layer 5G has electronic blocking property and prevents from invading because of electronics Enter hole injection layer 4G and lead to the function of the function reduction of hole injection layer 4G.

Hole transmission layer 5B (the second hole transmission layer) and hole transmission layer 7 (public hole transmission layer 7) have and will pass through Hole injection layer 4B is transferred to the function of light emitting functional layer 6B from anode 3B injected holes.

And, hole transmission layer 5B and 7 has electronic blocking property and prevents from because electronics invades hole injection layer 4B leading Cause the function of the function reduction of hole injection layer 4B.Further, since public hole transmission layer 7 is as described below very thin, so individually Hole transmission layer 7 electronic blocking property extremely low and motion of electronics is not suppressed in light-emitting component 1R and 1G.

The example of the constituent material of described hole transmission layer 5R, 5G and 5B includes：The amine of triphen amine polymer etc. Compound such as TFB (poly- (9,9- dioctyl-fluorenes -co- N- (4- butyl phenyl) diphenylamines))；Containing polyfluorene derivative (PF) or poly- right The polysilanes macromolecule of phenylacetylene derivatives (PPV), polyparaphenylene's derivative (PPP), Polyvinyl carbazole (PVK), poly- thiophene Fen derivant and the hole transporting material of Polymethylphenylsilane (PMPS)；Low molecule hole mobile material such as m-MTDATA (4,4', 4 "-three (N-3- MethYlphenylamino)-triphenylamine), TCTA (4,4', 4 "-three (N- carbazyl) triphenylamine) or α- NPD (double (N- (1- naphthyl)-N- phenyl) benzidine), and can be in a joint manner using one or more these material.Additionally, The constituent material of hole transmission layer 5R, 5G and 5B (the first hole transmission layer, the second hole transmission layer and the 3rd hole transmission layer) Can be same to each other or different to each other, but the composition as hole transmission layer 5R and 5G (the first hole transmission layer and the 3rd hole transmission layer) Material is mutually the same and the composition of the constituent material of hole transmission layer 5B (the second hole transmission layer) and hole transmission layer 5R and 5G When material is different, the luminous balance between light-emitting component 1R and 1G and light-emitting component 1B can easily adjust.

Moreover it is preferred that hole transmission layer 5R and 5G constructed respectively using high molecular hole mobile material and Hole transmission layer 5B and 7 is constructed respectively using low-molecular-weight hole mobile material.In this way, can be high using liquid phase method Effect forms hole transmission layer 5R and 5G with high dimensional accuracy.In addition, by using liquid phase method formed light emitting functional layer 6R and 6G and hole transmission layer 5R and 5G, carrier (hole) smoothly can be transferred to lighting function from hole transmission layer 5R and 5G Layer 6R and 6G.

Additionally, can efficiently form the hole transmission layer 5B and 7 with high dimensional accuracy using vapor phase method.Especially, lead to The mode using vapor phase method formation hole transmission layer 7 can have high accuracy (excellent controllability) of crossing forms very thin sky Cave transport layer 7.Even if additionally, when by implementing manufacture method formation hole transmission layer 5B different from each other and hole transmission layer 7 When, carrier (hole) still is able to smoothly be transferred to hole transmission layer 7 from hole transmission layer 5B, this is because constitute hole passing The molecule of the hole mobile material of defeated layer 5B and hole transmission layer 7 both low-molecular-weight.

Herein, in the case of wherein using the hole mobile material construction hole transmission layer 5B of low-molecular-weight, except low Outside molecular weight hole mobile material, hole transmission layer 5B can also comprise the hole mobile material of high molecular, and low molecule The amount content with respect to hole transmission layer 5B for the hole mobile material is preferably 50 weight %～100 weight %, more preferably 70 weights Amount %～100 weight %, most preferably 90 weight %～100 weight %.

Additionally, the example of the constituent material of public hole transmission layer 7 includes low-molecular-weight hole mobile material such as m- MTDATA (4,4', 4 "-three (N-3- MethYlphenylamino)-triphenylamine), TCTA (4,4', 4 "-three (N- carbazyl) triphenylamine) Or α-NPD (double (N- (1- naphthyl)-N- phenyl) benzidine), and can be in a joint manner using one or more these material. Additionally, the constituent material of hole transmission layer 7 (public hole transmission layer) can be with the constituent material of hole transmission layer 5R, 5G and 5B Identical or different, but when the constituent material of hole transmission layer 7 comprises the composition with hole transmission layer 5B (the second hole transmission layer) During the identical or approximate material of material, carrier (hole) can pass from hole transmission layer 5B smoothly through hole transmission layer 7 Defeated to light emitting functional layer 6B.

In a preferred embodiment, hole transmission layer 5B (the second hole transmission layer) and public hole transmission layer 7 wrap Contain and there is three aromatics or heteroaromatic ring system Ar¹、Ar²、Ar³Triarylamine compound as low-molecular-weight hole mobile material. The triarylamine compound of two layers can be identical or different, preferably identical.

Preferably, described triarylamine compound has lower formula (I)：

Wherein

Ar¹～Ar³It is that there are 5～60 aromatic ring atom when occurring every time in each case identical or differently Monocyclic or multi-ring aromatics or heteroaromatic ring system, described aromatics or heteroaromatic ring system can be replaced by one or more group R；

R when occurring every time identical or differently be H, D, F, Cl, Br, I, N (R¹)₂, CN, NO₂, Si (R¹)₃, B (OR¹)₂, C (=O) R¹, P (=O) (R¹)₂, S (=O) R¹, S (=O)₂R¹, OSO₂R¹, there is straight chained alkyl, the alkoxyl of 1～40 C atom Or thio alkoxy group, or there is side chain or cyclic alkyl, alkoxyl or the thio alkoxy group of 3～40 C atoms, institute Each stated in group can be by one or more group R¹Replace, wherein one or more non-adjacent CH₂Group can be by R¹C =CR¹、C≡C、Si(R¹)₂, C=O, C=S, C=NR¹, P (=O) (R¹)、SO、SO₂、NR¹, O, S or CONR¹Replace, and wherein One or more H atom can be replaced by D, F, Cl, Br, I or CN, or has the monocyclic or multi-ring of 5～60 aromatic ring atom Aromatics or heteroaromatic ring system, described aromatics or heteroaromatic rings system in each case can be by one or more group R¹Take Generation, or there is aryloxy group or the heteroaryloxy group of 5～60 aromatic ring atom, described aryloxy group or heteroaryloxy group are permissible By one or more group R¹Replace, or there is aralkyl or the heteroaralkyl group of 5～60 aromatic ring atom, described aralkyl Base or heteroaralkyl group can be by one or more group R¹Replace, or there is the ammonia diaryl of 10～40 aromatic ring atom Base group, di (hetero) arylamino groups or aryl heteroaryl amino group, described diarylamino groups, two heteroaryl amino bases Group or aryl heteroaryl amino group can be by one or more group R¹Replace, or crosslinkable group Q, two of which or more Multiple group R can also form monocyclic or multi-ring aliphatic series, aromatics and/or benzo-fused ring system each other；

R¹Identical or be differently H, D, F when occurring every time, or there is the aliphatic hydrocarbon group of 1～20 C atom, have The aromatics of 5～20 C atoms and/or heteroaromatic hydrocarbyl group, wherein one or more H atom can also be replaced by F, two of which Or more substituent R¹Monocyclic or polycyclic aliphatic or aromatics ring system can also be formed each other.

In a preferred embodiment, the triarylamine compound of formula (I) is characterised by, Ar¹、Ar²And/or Ar³In At least one at least one, preferably at one of two adjacent positions position by Ar⁴Replace, wherein Ar⁴Be have 5～ The monocyclic or polycyclic aromatic of 60 aromatic ring atom or heteroaromatic ring system, it can be replaced by one or more group R.

Ar herein⁴Directly can be connected to Ar by singly-bound or alternately through linking group X¹、Ar²And/or Ar³.

In a preferred embodiment, Ar¹、Ar²And Ar³Middle one, such as Ar³In one of two adjacent positions By Ar at position⁴Replace.Following formula (Ia) is preferably had by the compound of this formula (I)：

Wherein Ar¹、Ar²、Ar³、Ar⁴Implication shown above can be adopted with R,

Q=0,1,2,3,4,5 or 6, preferably 0,1,2,3 or 4,

X=CR₂、NR、SiR₂, O, S, C=O or P=O, preferably CR₂, NR, O or S, and

R=0 or 1, preferably 0.

In presently preferred embodiment, the compound of formula (I) is characterised by, Ar³In two adjacent bit One of put at position by Ar⁴Replace, and Ar³In addition it is connected to Ar at the meta adjacent with the ortho position replacing⁴.

Following formula (Ib) is preferably had by the compound of this formula (I)：

M=0,1,2,3 or 4,

N=0,1,2 or 3,

X=CR₂、NR、SiR₂, O, S, C=O or P=O, preferably CR₂, NR, O or S, and

S and t respectively 0 or 1, wherein (s+t) sum=1 or 2, preferably 1.

In first preferred embodiment, the compound of formula (I) is selected from lower formula (II), (III) and (IV)：

Wherein Ar¹、Ar²、Ar⁴Implication shown above can be adopted with R,

M=0,1,2,3 or 4,

N=0,1,2 or 3, and

X=CR₂、NR、SiR₂, O, S, C=O or P=O, preferably CR₂, NR, O or S.

In an especially preferred embodiment, the compound of formula (II) is selected from lower formula V：

Wherein Ar¹、Ar², R and m can using implication shown above,

P=0,1,2,3,4 or 5.

The example delineation of the preferred compound of formula (V) is in following table：

Wherein Ar¹、Ar², R, m, n and p can using implication shown above, and

K=0,1 or 2.

At one it is further particularly preferred that embodiment in, the compound of formula (III) is selected from lower formula (VI)：

Wherein Ar¹、Ar², R, m and n can be using implications shown above.

The example delineation of the preferred compound of formula (VI) is in following table：

Wherein Ar¹、Ar², R, m, n and p can be using implications shown above.

At one in addition it is further particularly preferred that embodiment in, the compound of formula (IV) is selected from lower formula (VII)：

Wherein Ar¹、Ar², R, m and n can be using implications shown above.

The example delineation of the preferred compound of formula (VII) is in following table：

Wherein Ar¹、Ar², R, m, n and p can be using implications shown above.

In a very especially preferred embodiment, the compound of formula (V) is selected from lower formula (VIII)：

Wherein R, m and p can be using implications shown above.

The example delineation of the preferred compound of formula (VIII) is in following table：

Wherein R, k, m, n and p can be using implications shown above.

In an also very especially preferred embodiment, the compound of formula (VI) is selected from lower formula (IX)：

Wherein R, X, m and n can be using implications shown above.

The example delineation of the preferred compound of formula (IX) is in following table：

Wherein R, m, n and p can adopt implication shown above, and

V=1～20, preferably 1～10.

In an other also very especially preferred embodiment, the compound of formula (VII) is selected from lower formula (X)：

Wherein R, X, m and n can be using implications shown above.

The example delineation of the preferred compound of formula (X) is in following table：

Wherein R, m and n can be using implications shown above.

Term " monocyclic or multi-ring aromatics ring system " in this application be considered to refer to have 6～60, preferably 6～30 and The aromatics ring system of particularly preferred 6～24 aromatic ring atom, it only need not comprise aromatic group, but plurality of aromatic units Can also by short non-aromatic unit (<Atom outside 10% H, preferably<Atom outside 5% H) interrupt, described non-aromatic Race's unit is such as sp³The C atom of-hydridization or O or N atom, CO group etc..Thus, for example, such as 9,9 '-spiral shell two fluorenes, 9,9- The system of diaryl fluorene and 9,9- dialkyl fluorene is also intended to be considered as aromatics ring system.

Described aromatics ring system can be monocyclic or multi-ring, and that is, it can comprise a ring (such as phenyl) or multiple ring, It can also be (the such as naphthyl) condensing or (the such as xenyl) that be covalently attached, or the group comprising ring that condense and connection Close.

Preferably aromatics ring system is such as phenyl, biphenyl, terphenyl, [1,1':3', 1 "] terphenyl -2'- base, quaterphenyl, Naphthyl, anthracene, dinaphthalene, phenanthrene, dihydro phenanthrene, pyrene, dihydropyrene,, aphthacene, Benzo[b, benzopyrene, fluorenes, indenes, indenofluorene and spiral shell Two fluorenes.

Term " monocyclic or multi-ring heteroaromatic ring system " in this application is considered to refer to there is 5～60, preferably 5～30 And the aromatics ring system of particularly preferred 5～24 aromatic ring atom, wherein one or more of these atoms are hetero atoms.Described " monocyclic or multi-ring heteroaromatic ring system " need not only comprise aromatic group, but can also by short non-aromatic unit (<10% Atom outside H, preferably<Atom outside 5% H) interrupt, described non-aromatic unit is such as sp³The C atom of-hydridization or O Or N atom, CO group etc..

Described heteroaromatic ring system can be monocyclic or multi-ring, and that is, it can comprise a ring or multiple ring, and it is acceptable It is (such as pyridinylphenyl) that condense or covalent attachment, or the combination comprising ring that condense and connection.Preferably completely common The heteroaryl groups of yoke.

Preferably heteroaromatic ring system be, for example, 5 yuan of rings for example pyrroles, pyrazoles, imidazoles, 1,2,3- triazole, 1,2,4- triazole, four Azoles, furan, thiophene, selenophen,Azoles, differentAzoles, 1,2- thiazole, 1,3- thiazole, 1,2,3-Diazole, 1,2,4-Diazole, 1, 2,5-Diazole, 1,3,4-Diazole, 1,2,3- thiadiazoles, 1,2,4- thiadiazoles, 1,2,5- thiadiazoles, 1,3,4- thiadiazoles；6 Yuan of rings for example pyridine, pyridazine, pyrimidine, pyrazine, 1,3,5- triazine, 1,2,4- triazine, 1,2,3- triazine, 1,2,4,5- tetrazine, 1,2, 3,4- tetrazine, 1,2,3,5- tetrazine；Or there is group such as carbazole, indeno carbazole, indole, iso-indoles, indolizine, the Yin of multiple rings Azoles, benzimidazole, benzotriazole, purine, naphtho- imidazoles, phenanthro- imidazoles, pyridine-imidazole, pyrazine imidazoles, quinoxaline miaow Azoles, benzoAzoles, naphtho-Azoles, anthraAzoles, phenanthro-Azoles, differentAzoles, benzothiazole, benzofuran, isobenzofuran, Dibenzofurans, quinoline, isoquinolin, pteridine, benzo -5,6- quinoline, benzo -6,7- quinoline, benzo -7,8- quinoline, benzisoxa Quinoline, acridine, phenothiazine, fenPiperazine, benzo pyridazine, benzo pyrimidine, quinoxaline, azophenlyene, naphthyridines, azepine carbazole, benzo carboline, Phenanthridines, phenanthroline, thieno [2,3b] thiophene, thieno [3,2b] thiophene, dithienothiophene, isothiophene, dibenzo The combination of thiophene, Benzothiadiazole thiophene (benzothiadiazothiophene) or these groups.

Described monocyclic or multi-ring aromatics or heteroaromatic ring system can be unsubstituted or substituted.Replace in this application Refer to that described monocyclic or polycyclic aromatic or heteroaromatic ring system comprise one or more substituent R.

R is following group when occurring every time preferably identical or differently：H, D, F, Cl, Br, I, N (R¹)₂, CN, NO₂, Si (R¹)₃, B (OR¹)₂, C (=O) R¹, P (=O) (R¹)₂, S (=O) R¹, S (=O)₂R¹, OSO₂R¹, there is the straight of 1～40 C atom Alkyl group, alkoxyl or thio alkoxy group or there is the alkenyl or alkynyl group of 2～40 C atoms or there are 3～40 C The side chain of atom or cyclic alkyl, alkoxyl or thio alkoxy group, each in described group can be one or more Group R¹Replace, wherein one or more non-adjacent CH₂Group can be by R¹C=CR¹、C≡C、Si(R¹)₂, C=O, C=S, C= NR¹, P (=O) (R¹)、SO、SO₂、NR¹, O, S or CONR¹Replace and wherein one or more H atom can be by D, F, Cl, Br, I Or CN replaces, or there is aromatics or the heteroaromatic ring system of 5～60 aromatic ring atom, its in each case can by one or Multiple group R¹Replace, or there is aryloxy group or the heteroaryloxy group of 5～60 aromatic ring atom, it can be by one or many Individual group R¹Replace, or there is aralkyl or the heteroaralkyl group of 5～60 aromatic ring atom, it can be one or more Group R¹Replace, or it is miscellaneous to have the diarylamino groups of 10～40 aromatic ring atom, di (hetero) arylamino groups or aryl Arylamino groups, it can be by one or more group R¹Replace；Two or more groups R can also be formed each other herein Monocyclic or polycyclic aliphatic, aromatics and/or benzo-fused ring system.

R is following group when occurring every time particularly preferably identical or differently：H, D, F, Cl, Br, I, N (R¹)₂, Si (R¹)₃, B (OR¹)₂, C (=O) R¹, P (=O) (R¹)₂, there is the straight chained alkyl of 1～20 C atom or alkoxy base or have The alkenyl or alkynyl group of 2～20 C atoms or side chain or cyclic alkyl or the alkoxy base with 3～20 C atoms, institute Each stated in group can be by one or more group R¹Replace, wherein one or more non-adjacent CH₂Group can be by R¹C =CR¹、C≡C、Si(R¹)₂, C=O, C=NR¹, P (=O) (R¹)、NR¹, O or CONR¹Replace and wherein one or more H atom Can be replaced by F, Cl, Br or I, or there is aromatics or the heteroaromatic ring system of 5～30 aromatic ring atom, it is in each case Can be by one or more group R¹Replace, or there is aryloxy group or the heteroaryloxy group of 5～30 aromatic ring atom, it can With by one or more group R¹Replace, or there is aralkyl or the heteroaralkyl group of 5～30 aromatic ring atom, it is permissible By one or more group R¹Replace, or there are the diarylamino groups of 10～20 aromatic ring atom, two heteroaryl aminos Group or aryl heteroaryl amino group, it can be by one or more group R¹Replace；Two or more groups R is also herein Monocyclic or polycyclic aliphatic, aromatics and/or benzo-fused ring system can be formed each other.

R is very following group when occurring every time particularly preferably identical or differently：H, has 1～10 C atom Straight chained alkyl or alkoxy base or have 2～10 C atoms alkenyl or alkynyl group or have 3～10 C atoms Chain or cyclic alkyl or alkoxy base, each in described group can be by one or more group R¹Replace, one of Or multiple non-adjacent CH₂Group can be by R¹C=CR¹, C ≡ C, C=O, C=NR¹、NR¹, O or CONR¹Replace, or have 5～20 The aromatics of individual aromatic ring atom or heteroaromatic ring system, it in each case can be by one or more group R¹Replace, or tool There are aryloxy group or the heteroaryloxy group of 5～20 aromatic ring atom, it can be by one or more group R¹Replace, or have The aralkyl of 5～20 aromatic ring atom or heteroaralkyl group, it can be by one or more group R¹Replace, or have 10 The diarylamino groups of～20 aromatic ring atom, di (hetero) arylamino groups or aryl heteroaryl amino group, it is permissible By one or more group R¹Replace；Two or more groups R can also form monocyclic or polycyclic aliphatic, aromatics each other herein And/or benzo-fused ring system.

The compound of formula (I)～(X) preferably has≤molecular weight of 3000g/mol, more preferably have≤2000g/mol Molecular weight, most preferably has the≤molecular weight of 1500g/mol.

The compound of formula (I)～(X) preferably has >=molecular weight of 500g/mol, more preferably have >=700g/mol point Son amount, most preferably has the >=molecular weight of 900g/mol.

In an embodiment further preferably, except selected from formula (I)～(X) low-molecular-weight triarylamine compound it Outward, hole transmission layer 5B (the second hole transmission layer) also comprises the polymer of at least one construction unit containing following formula (XI)：

Wherein

R when occurring every time identical or differently be H, D, F, Cl, Br, I, N (R¹)₂, CN, NO₂, Si (R¹)₃, B (OR¹)₂, C (=O) R¹, P (=O) (R¹)₂, S (=O) R¹, S (=O)₂R¹, OSO₂R¹, there is straight chained alkyl, the alkoxyl of 1～40 C atom Or thio alkoxy group or side chain or cyclic alkyl, alkoxyl or the thio alkoxy group with 3～40 C atoms, institute Each stated in group can be by one or more group R¹Replace, wherein one or more non-adjacent CH₂Group can be by R¹C =CR¹、C≡C、Si(R¹)₂, C=O, C=S, C=NR¹, P (=O) (R¹)、SO、SO₂、NR¹, O, S or CONR¹Replacement and wherein one Individual or multiple H atom can be replaced by D, F, Cl, Br, I or CN, or has the monocyclic or multi-ring of 5～60 aromatic ring atom Aromatics or heteroaromatic ring system, described aromatics or heteroaromatic rings system in each case can be by one or more group R¹Replace, Or there is aryloxy group or the heteroaryloxy group of 5～60 aromatic ring atom, described aryloxy group or heteroaryloxy group can be by One or more group R¹Replace, or there is aralkyl or the heteroaralkyl group of 5～60 aromatic ring atom, described aralkyl Or heteroaralkyl group can be by one or more group R¹Replace, or there is the ammonia diaryl base of 10～40 aromatic ring atom Group, di (hetero) arylamino groups or aryl heteroaryl amino group, described diarylamino groups, di (hetero) arylamino groups Or aryl heteroaryl amino group can be by one or more group R¹Replace, two of which or more groups R can be with those This forms monocyclic or polycyclic aliphatic, aromatics and/or benzo-fused ring system；

R¹Identical or be differently H, D, F when occurring every time, or there is the aliphatic hydrocarbon group of 1～20 C atom, have The aromatics of 5～20 C atoms and/or heteroaromatic hydrocarbyl group, wherein one or more H atom can also be replaced by F；Two of which Or more substituent R¹Monocyclic or polycyclic aliphatic or aromatics ring system can also be formed each other；And

Dotted line represents the key connecting in the polymer with adjacent construction unit.

In a preferred embodiment, the construction unit of formula (XI) is characterised by, Ar³At at least one, preferably exist By Ar at one of two adjacent positions position⁴Replace, wherein Ar⁴It is there are 5～60 aromatic ring atom monocyclic or multi-ring Aromatics or heteroaromatic ring system, it can be replaced by one or more group R.

Ar herein⁴Directly can be connected to Ar by singly-bound or alternately through linking group X³.

Preferably be there is the structure of following formula (XIa) by the construction unit of this formula (XI)：

Q=0,1,2,3,4,5 or 6, preferably 0,1,2,3 or 4,

X=CR₂、NR、SiR₂, O, S, C=O or P=O, preferably CR₂, NR, O or S, and

R=0 or 1, preferably 0.

In this application, term polymer refers to polymerizable compound, oligomeric compound and dendritic macromole.According to this Bright polymerizable compound preferably comprises 10～10000, particularly preferred 10～5000, very particularly preferred 10～2000 structure lists First (i.e. repetitives).3～9 construction units are preferably comprised according to the oligomeric compound of the present invention.Polymer is branched herein The factor is between 0 (linear polymer, no branch point)～1 (completely branched dendritic macromole).

Polymer according to the present invention preferably has the molecular weight M of 1000～2000000g/mol_w, particularly preferably have The molecular weight M of 10000～1500000g/mol_w, particularly preferably there is the molecular weight M of 50000～1000000g/mol very much_w.Institute State molecular weight M_wDetermined using GPC (=gel permeation chromatography) based on polystyrene internal standard substance.

According to the polymer of the present invention be conjugation, the partly conjugated or polymer that is not conjugated.Preferably conjugation or partly conjugated Polymer.

According to the present invention, the construction unit of formula (XI) can be incorporated in main chain or the side chain of polymer.It is preferable, however, that by formula (XI) construction unit is incorporated in the main chain of polymer.In the case of being incorporated to the side chain of polymer, the construction unit of formula (XI) Can be univalent or bivalence, that is, its construction unit adjacent with polymer has one or two key.

" conjugated polymer " in the application meaning is to mainly contain sp in main chain²- hydridization (or optionally also have sp miscellaneous Change) carbon atom polymer, it also can be replaced by the hetero atom of correspondingly hydridization.In simplest situation it means that Alternately there is double bond and singly-bound in main chain, but the polymer comprising the such as unit of penylene that meta connects is also intended to be considered It is the conjugated polymer in the application meaning." main " refers to lead to the defect that the nature (spontaneous) being conjugated interruption occurs not affect Term " conjugated polymer ".Term conjugated polymer is equally applicable to the polymer with conjugated main chain and non-conjugated side chain.This Outward, if main chain comprise for example arylamine units, aryl phosphine unit, specific heterocycle (that is, being conjugated by N, O or S atom) and/ Or metal-organic complex (that is, being conjugated by metallic atom), then equally it is conjugated using term in this application.Analogue is fitted For conjugated dendritic macromole.In contrast to this, clearly will for example simple alkyl bridge base, (sulfur) ether, ester, amide or acyl The unit that imines connects is defined as not being conjugated fragment.

Polymer partly conjugated in this application is intended to refer to interrupt body containing by not conjugate moiety, specific conjugation (such as spacer groups) or side chain and the polymer of conjugate moiety that is separated from each other, for example, wherein pass through not conjugate moiety and interrupt master Relatively long conjugate moiety in chain, or it contains the relatively long conjugate moiety in polymer lateral chain, described polymer Main chain is not conjugated.Conjugation and partly conjugated polymer also can comprise conjugation, the dendroid being partly conjugated or not being conjugated Macromole.

Term " dendritic macromole " in the application be intended to refer to from multifunctional center (core) build highly branched Compound, branched monomer in the way of regular texture with described multifunctional center bonding and obtain tree.Said core The branched structure of any desired both can be adopted with described monomer, it comprises pure organo units and Organometallic compounds Both thing or coordination compound.Here " dendritic macromole " be typically aimed at be understood to as in such as M.Fischer and Described in F.Vogtle (Angew.Chem., Int.Ed. (applied chemistry world version) 1999,38,885).

Term " construction unit " in this application is thought and is referred to following unit, and it is from comprising at least two, preferably two The monomeric unit of reactive group begin through reaction and in the case of bonding the part as polymer backbone be incorporated to institute State and be present in the polymer of preparation in polymer backbone and thus as the repetitives connecting.

Term " monocyclic or multi-ring aromatics ring system " in this application is thought and is referred to have 6～60, preferably 6～30 and outstanding The aromatics ring system of its preferably 6～24 aromatic ring atom, it only need not comprise aromatic group, but plurality of aromatic units are also Can by short non-aromatic unit (<Atom outside 10% H, preferably<Atom outside 5% H) interrupt, described non-aromatic Unit is such as sp³The C atom of-hydridization or O or N atom, CO group etc..Thus, for example, such as 9,9 '-spiral shell two fluorenes, 9,9- bis- The system of aryl fluorenes and 9,9- dialkyl fluorene is also intended to be considered as aromatics ring system.

Preferably aromatics ring system is, for example, phenyl, biphenyl, terphenyl, [1,1':3', 1 "] terphenyl -2'- base, quaterphenyl, Naphthyl, anthracene, dinaphthalene, phenanthrene, dihydro phenanthrene, pyrene, dihydropyrene,, aphthacene, Benzo[b, benzopyrene, fluorenes, indenes, indenofluorene and spiral shell Two fluorenes.

Preferably heteroaromatic ring system be, for example, 5 yuan of rings for example pyrroles, pyrazoles, imidazoles, 1,2,3- triazole, 1,2,4- triazole, four Azoles, furan, thiophene, selenophen,Azoles, differentAzoles, 1,2- thiazole, 1,3- thiazole, 1,2,3-Diazole, 1,2,4-Diazole, 1, 2,5-Diazole, 1,3,4-Diazole, 1,2,3- thiadiazoles, 1,2,4- thiadiazoles, 1,2,5- thiadiazoles, 1,3,4- thiadiazoles；6 Yuan of rings for example pyridine, pyridazine, pyrimidine, pyrazine, 1,3,5- triazine, 1,2,4- triazine, 1,2,3- triazine, 1,2,4,5- tetrazine, 1,2, 3,4- tetrazine, 1,2,3,5- tetrazine；Or there is group such as carbazole, indeno carbazole, indole, iso-indoles, indolizine, the Yin of multiple rings Azoles, benzimidazole, benzotriazole, purine, naphtho- imidazoles, phenanthro- imidazoles, pyridine-imidazole, pyrazine imidazoles, quinoxaline miaow Azoles, benzoAzoles, naphtho-Azoles, anthraAzoles, phenanthro-Azoles, differentAzoles, benzothiazole, benzofuran, isobenzofuran, Dibenzofurans, quinoline, isoquinolin, pteridine, benzo -5,6- quinoline, benzo -6,7- quinoline, benzo -7,8- quinoline, benzisoxa Quinoline, acridine, phenothiazine, fenPiperazine, benzo pyridazine, benzo pyrimidine, quinoxaline, azophenlyene, naphthyridines, azepine carbazole, benzo carboline, Phenanthridines, phenanthroline, thieno [2,3b] thiophene, thieno [3,2b] thiophene, dithienothiophene, isothiophene, dibenzo The combination of thiophene, Benzothiadiazole thiophene or these groups.

R¹When occurring every time it is preferably identical or differently：H, D, F, or there is the aliphatic hydrocarbyl of 1～20 C atom Group, has aromatics and/or the heteroaromatic hydrocarbyl group of 5～20 C atoms, wherein one or more H atom can also be replaced by F； Two or more substituent R herein¹Monocyclic or polycyclic aliphatic or aromatics ring system can also be formed each other.

R¹When occurring every time it is particularly preferably identical or differently：H, D, or there is the aliphatic hydrocarbyl of 1～20 C atom Group, has aromatics and/or the heteroaromatic hydrocarbyl group of 5～20 C atoms；Two or more substituent R herein¹Can also be each other Form monocyclic or polycyclic aliphatic or aromatics ring system.

R¹When occurring every time it is very particularly preferably identical or differently：H, or there is the aliphatic hydrocarbon of 1～10 C atom Group, has aromatics and/or the heteroaromatic hydrocarbyl group of 5～10 C atoms.

In one embodiment, at least one construction unit of the formula (XI) of polymer is characterised by, Ar³At two By Ar at the position of one of adjacent position⁴Replace, and Ar³In addition in the meta position adjacent with described substituted position ortho Place is connected to Ar⁴.

Preferably be there is the structure of following formula (XIb) by the construction unit of this formula (XI)：

M=0,1,2,3 or 4,

N=0,1,2 or 3,

X=CR₂、NR、SiR₂, O, S, C=O or P=O, preferably CR₂, NR, O or S, and

S and t respectively 0 or 1, wherein (s+t) sum=1 or 2, preferably 1.

In a preferred embodiment, at least one construction unit of formula (XI) be selected from following formula (XII), (XIII) and (XIV) construction unit：

Wherein Ar¹、Ar²、Ar⁴Implication shown above can be adopted with R,

M=0,1,2,3 or 4,

N=0,1,2 or 3, and

X=CR₂、NR、SiR₂, O, S, C=O or P=O, preferably CR₂, NR, O or S.

In an especially preferred embodiment, at least one construction unit of formula (XII) is selected from the knot of following formula (XV) Structure unit：

Wherein Ar¹、Ar², R and m can using implication shown above, and

P=0,1,2,3,4 or 5.

The example delineation of the preferred structure unit of formula (XV) is in following table：

Wherein Ar¹、Ar², R, m, n and p can using implication shown above, and

K=0,1 or 2.

At one it is further particularly preferred that embodiment in, at least one construction unit of formula (XIII) is selected from following formula (XVI) Construction unit：

Wherein Ar¹、Ar², R, m and n can be using implications shown above.

The example delineation of the preferred structure unit of formula (XVI) is in following table：

Wherein Ar¹、Ar², R, m, n and p can be using implications shown above.

At one also in addition in especially preferred embodiment, at least one construction unit of formula (XIV) is selected from following formula (XVII) construction unit：

Wherein Ar¹、Ar², R, m and n can be using implications shown above.

The example delineation of the preferred structure unit of formula (XVII) is in following table：

Wherein Ar¹、Ar², R, m, n and p can be using implications shown above.

In a very especially preferred embodiment, at least one construction unit of formula (XV) is selected from following formula (XVIII) construction unit：

Wherein R, m and p can be using implications shown above.

The example delineation of the preferred structure unit of formula (XVIII) is in following table：

Wherein R, k, m, n and p can be using implications shown above.

In an other very especially preferred embodiment, at least one construction unit of formula (XVI) is selected from following formula (XIX) construction unit：

Wherein R, X, m and n can be using implications shown above.

The example delineation of the preferred structure unit of formula (XIX) is in following table：

Wherein R, m, n and p can adopt implication shown above, and

V=1～20, preferably 1～10.

In an other also very especially preferred embodiment, at least one construction unit of formula (XVII) is selected from down The construction unit of formula (XX)：

Wherein R, X, m and n can be using implications shown above.

The example delineation of the preferred structure unit of formula (XX) is in following table：

Wherein R, m and n can be using implications shown above.

Formula (XVIII), (XIX) and (XX) and formula (XVIIIa)～(XVIIIh), (XIXa)～(XIXg) and (XXa)～ (XXc), in its preferred implementation, dotted line represents the key connecting in the polymer with adjacent construction unit.It can herein It is arranged in ortho position independently of one another identical or differently, in meta or para position, be preferably arranged in ortho position, meta or para position in the same manner On, particularly preferably it is arranged in meta or para position and be particularly preferably arranged in very much in para-position.

Formula (XI), (XII), (XIII), (XIV), (XV), (XVI), (XVII), the structure of (XVIII), (XIX) or (XX) Unit ratio in the polymer is 1～100mol%.

In one embodiment, described polymer only comprise a kind of formula (XI), (XII), (XIII), (XIV), (XV), (XVI), (XVII), the construction unit of (XVIII), (XIX) or (XX), that is, its ratio in the polymer is 100mol%.? In this situation, described polymer is homopolymer.

In this second embodiment, all copolymerizable as the construction unit presence in polymer based on 100mol% Monomer, formula (XI), (XII), (XIII), (XIV), (XV), (XVI), (XVII), the structure list of (XVIII), (XIX) or (XX) Unit's ratio in the polymer is 50～95mol%, particularly preferred 60～95mol%, that is, except formula (XI), (XII), (XIII), one or more of (XIV), (XV), (XVI), (XVII), (XVIII), (XIX) and/or (XX) construction unit it Outward, described polymer also comprise with formula (XI), (XII), (XIII), (XIV), (XV), (XVI), (XVII), (XVIII), (XIX) and/or (XX) the different other construction unit of construction unit.

In the third embodiment, all copolymerizable as the construction unit presence in polymer based on 100mol% Monomer, formula (XI), (XII), (XIII), (XIV), (XV), (XVI), (XVII), the structure list of (XVIII), (XIX) or (XX) Unit's ratio in the polymer is 5～50mol%, particularly preferred 25～50mol%, that is, except formula (XI), (XII), (XIII), (XIV), outside one or more of (XV), (XVI), (XVII), (XVIII), (XIX) and/or (XX) construction unit, described Polymer also comprises and formula (XI), (XII), (XIII), (XIV), (XV), (XVI), (XVII), (XVIII), (XIX) and (XX) The different other construction unit of construction unit.

With formula (XI), (XII), (XIII), (XIV), (XV), (XVI), (XVII), (XVIII), (XIX) and (XX) knot These different construction units of structure unit are especially disclosed in WO 02/077060 A1 and WO 2005/014689 A2 and wide General those construction units listed.Other construction unit for example may originate from following classification：

Group 1：The hole injection of impact polymer and/or the unit of hole transporting property；

Group 2：The impact electron injection of polymer and/or the unit of electronic transport property；

Group 3：There is the unit of the combination of single unit from group 1 and group 2；

Group 4：Enable to obtain the list that the mode of electroluminescent phosphorescence rather than electroluminescent fluorescent is modified to the characteristics of luminescence Unit；

Group 5：Promote from singlet state to the unit of the transition of triplet；

Group 6：The unit of the glow color of polymer that impact is obtained；

Group 7：It is typically used as the unit of polymer backbone；

Group 8：The film form of polymer and/or the unit of the rheological equationm of state that impact is obtained.

Preferably for wherein at least one construction unit, there are charge transport properties according to the polymer of the present invention to comprise Those polymer from the unit of group 1 and/or 2.

Have hole injection and/or the construction unit of hole transporting property from group 1 are, for example, triarylamine, biphenyl Amine, four aryl p-phenylenediamine, triaryl phosphine, phenothiazine, fenPiperazine, dihydrophenazine, thianthrene, dibenzo are to twoEnglish, fenThiophene (phenoxathiyne), carbazole, thiophene, pyrroles and furan derivatives and the other heterocycle containing O-, S- or N-.

The construction unit being following formula (1a)～(1q) from the preferred structure unit organizing 1：

Wherein R, k, m and n can be using implications shown above.

In formula (1a)～(1q), dotted line represents the possible key that the construction unit adjacent with polymer connects.If In formula exist two dotted lines, then construction unit have one or two, preferably two keys being connected with adjacent structural units.As Fruit in formula exist three dotted lines, then construction unit have one, two or three, preferably two with adjacent construction unit company The key connecing.If in formula exist four dotted lines, construction unit have one, two, three or four, preferably two with phase The key that adjacent construction unit connects.It can be arranged in ortho position, in meta or para position independently of one another identical or differently herein.

From group 2 the construction unit with electron injection and/or electronic transport property be, for example, pyridine, pyrimidine, pyridazine, Pyrazine,Diazole, quinoline, quinoxaline, anthracene, benzanthracene, pyrene, benzimidazole, triazine, ketone, phosphine oxide and phenazene derivative, But it is also triarylborane and the other heterocycle containing O-, S- or N-.

Described polymer can preferably comprise the structure of the impact hole mobility being wherein connected to each other directly from group 3 With the unit (that is, from the unit of group 1 and 2) of the structure improving electron mobility or comprise to increase hole mobility and electronics The structure of both mobilitys.Some of these units potentially act as luminous body and so that glow color switchs to green, yellow or red Color.Therefore, their purposes is applied to and for example produces other glow colors from the polymer of initial blue light-emitting.

Construction unit from group 4 is following construction unit, even if it still is able to efficiently send out from triplet at room temperature Light, that is, show electroluminescent phosphorescence rather than electroluminescent fluorescent, and this typically results in the raising of efficiency.Be applied to this purpose is to comprise first The compound of heavy atom, described heavy atom has the atomic number more than 36.Preferably comprise d- the or f- mistake meeting above-mentioned condition Cross the compound of metal.The corresponding construction of the element (Ru, Os, Rh, Ir, Pd, Pt) particularly preferably containing the 8th～10 race herein Unit.Be used herein to described polymer Suitable building blocks be for example WO 02/068435 A1, WO 02/081488 A1, Various complex described in EP 1239526 A2 and WO 2004/026886 A2.In WO 02/068435 A1 and WO In 2005/042548 A1, corresponding monomer is described.

The construction unit of group 5 is to promote from singlet state to those construction units of the transition of triplet, and uses it for propping up Hold from the structural element of group 4 and improve the phosphorescence of these structural elements.Especially it is adaptable to this purpose for carbazole With the carbazole dimerization body unit of bridging, as described in such as WO 2004/070772 A2 and WO 2004/113468 A1 's.In addition it is adaptable to this purpose for ketone, phosphine oxide, sulfoxide, sulfone, silane derivative and similar compound, such as in such as WO Described in 2005/040302 A1.

In addition to said structure unit, the construction unit of group 6 is following construction unit, and it has will not fall at above-mentioned group Interior at least one other aromatic structure or other conjugated structure, i.e. its only less shadow of mobility to electric charge carrier Ring, be not metal-organic complex or do not interfere with singlet state-triplet transition.Such structural element can affect institute The glow color of the polymer obtaining.Therefore, according to described unit, luminous body can be used them as.Preferred herein for having 6 The aromatic structure of～40 C atoms or tolan or Distyrylarylene derivatives, each in described group Can be replaced by one or more group R.Here particularly preferred 1,4- or 9,10- anthrylene, 1,6-, 2,7- or 4,9- Asia pyrenyl, 3,9- or 3,10- subunit (perylenylene), 4,4 '-sub- tolan base (tolanylene), 4,4'- subunit, benzene And thiadiazoles and corresponding oxygen derivant, quinoxaline, phenothiazine, fenPiperazine, dihydrophenazine, double (thiophenyl) arlydene, oligomeric Being incorporated to of (thiophenylene), azophenlyene, rubrene, Benzo[b or derivant, it is preferably substituted or preferred the pushing away of conjugation Pull system (system being replaced using donor and receptor substituent group) or for preferably substituted system such as side's acid cyanines (squarine) or Quinacridone.

The construction unit of group 7 is the unit containing the aromatic structure with 6～40 C atoms, is generally used as being polymerized Thing skeleton.These are, for example, 4,5- dihydro pyrene derivatives, 4,5,9,10- tetrahydrochysene pyrene derivatives, fluorene derivative, 9,9 '-spiral shell two fluorenes Derivant, phenanthrene derivative, 9,10- dihydro phenanthrene derivative, 5,7- dihydro-dibenzo oxygen pinane (dihydrodibenzoxepine) spread out Biological and cis-and trans-indeno fluorene derivative, and be also 1,2-, 1,3- or Isosorbide-5-Nitrae-phenylene, 1,2-, 1,3- or Isosorbide-5-Nitrae- Naphthylene, 2,2'-, 3,3'- or 4,4'- biphenylene, 2,2 "-, 3,3- " or 4,4 "-sub- terphenyl, 2,2'-, 3,3'- or Double -1,1'- the naphthylene of 4,4'- or 2,2 " ' -, 3,3 " '-or 4,4 " '-sub- tetrad phenyl derivatives.

The construction unit being following formula (7a)～(7o) from the preferred structure unit organizing 7：

Wherein R, k, m and n can be using implications shown above.

In formula (7a)～(7o), dotted line represents the possible key connecting in the polymer with adjacent construction unit.As Fruit in formula exist two dotted lines, then construction unit have one or two, preferably two keys being connected with adjacent structural units. If there is the dotted line of four or more a plurality of in the formula (formula (7g), (7h) and (7j)), construction unit have one, two, Three or four, preferably two keys connecting with adjacent construction unit.It can independently of one another identical or differently herein Be arranged in ortho position, in meta or para position.

The construction unit of group 8 is the impact film form of polymer and/or the construction unit such as siloxanes, alkyl of the rheological equationm of state Chain or fluorinated groups, are especially also rigidity or flexible unit, the unit forming liquid crystal or crosslinkable group.

Except formula (XI), (XII), (XIII), (XIV), (XV), (XVI), (XVII), (XVIII), (XIX) and/or (XX), outside construction unit, described polymer preferably also comprises one or more unit selected from group 1～8 simultaneously.Similarly, Preferably simultaneously exist from one group exceed a kind of other construction unit.

Except formula (XI), (XII), (XIII), (XIV), (XV), (XVI), (XVII), (XVIII), (XIX) and/or (XX), outside at least one construction unit, preferably described polymer also comprises the unit from group 7 herein.

Similarly, preferably described polymer comprises to improve electric charge transmission or the unit of electric charge injection, that is, be derived from group 1 and/ Or 2 unit.

Additionally, particularly preferably described polymer comprises the construction unit from group 7 and the unit from group 1 and/or 2.

Described polymer be homopolymer or copolymer, described homopolymer contained (XI), (XII), (XIII), (XIV), (XV), (XVI), (XVII), the construction unit of (XVIII), (XIX) or (XX).Described polymer can be linear or side chain, Preferably linear.Except formula (XI), (XII), (XIII), (XIV), (XV), (XVI), (XVII), (XVIII), (XIX) and/or (XX), outside one or more construction unit, described copolymer potentially can also have the one kind or many from above-mentioned group 1～8 Plant other structures.

Described copolymer can comprise randomly, alternately or block-wise structure or also have alternately arranged these structures multiple. Copolymer according to the present invention particularly preferably comprises random or alternating structure.Described copolymer is particularly preferably random or alternately common Polymers.In WO 2005/014688 A2, for example describe the mode being obtained in that the copolymer with block-wise structure in detail With the other structures key element being especially preferred for use in this purpose.

The thickness of hole transmission layer 5R, 5G and 5B is not particularly limited, preferably 15nm～25nm.

Additionally, the thickness t of hole transmission layer 7 is 2nm or less, preferably 0.1nm～1.5nm, more preferably 0.1nm～ 1nm, most preferably 0.1nm～0.9nm.In this way, in light-emitting component 1R and 1G, due to be arranged on light emitting functional layer 6R and 6G is very thin with the hole transmission layer 7 among light emitting functional layer 6B, so carrier (electronics) can transmit from light emitting functional layer 6B To light emitting functional layer 6R and 6G.Therefore, so that light emitting functional layer 6R and 6G can optionally send out in light-emitting component 1R and 1G Light and light emitting functional layer 6B is not lighted.Further, since hole transmission layer 7 is very thin, so can suppress by being arranged on luminous work( The driving voltage of light-emitting component 1R, 1G and 1B that hole transmission layer 7 among ergosphere 6R and 6G and light emitting functional layer 6B causes Raise.

Herein, because the constituent material of hole transmission layer 7 has electronic blocking property as above, so by using The electronic blocking property of the hole transmission layer 7 in light-emitting component 1B, light emitting functional layer 6B can be effectively luminous.On the contrary, luminous In element 1R and 1G, when the electronic blocking property of hole transmission layer 7 is high, light emitting functional layer 6R and 6G do not light or luminous effect Rate is decreased obviously.Therefore, in this case, by making, the thickness of hole transmission layer 7 is minimum to reduce light-emitting component 1R and 1G The electronic blocking property of hole-transporting layer 7 is exceedingly useful.

On the contrary, when the thickness t of hole transmission layer 7 is minimum, there is the above-mentioned effect producing by arranging hole transmission layer 7 Fruit becomes minimum trend.On the contrary, when the thickness t of hole transmission layer 7 is very big, the driving voltage of light-emitting component 1R and 1G is drastically Become big (luminous efficiency drastically step-down) or desired glow color can not be obtained, this is because light emitting functional layer 6B is in light-emitting component Launching light in 1R and 1G.

[light emitting functional layer]

In the way of contacting with hole transmission layer 5R, light emitting functional layer 6R is set.In addition, to contact with hole transmission layer 5G Mode light emitting functional layer 6G is set.Additionally, arranging light emitting functional layer 6B in the way of contacting with hole transmission layer 7.

Construct light emitting functional layer 6R, 6G and 6B by comprising luminescent material respectively.The example of luminescent material does not especially limit System, including various fluorescent materials and phosphor material, and can be in combination using one or more these material.Luminous work( Ergosphere 6R is used red fluorescence material or red phosphorescence material as luminescent material, and light emitting functional layer 6G uses green fluorescent material Or green phosphorescent material is as luminescent material, and light emitting functional layer 6B be used blue fluorescent material or blue phosphor materials as send out Luminescent material.

The example of red fluorescence material is not particularly limited, as long as described material transmitting red fluorescence, including：Spread out Biological such as two indeno derivants, europium complex, 1-benzopyran derivatives, rhodamine derivant, benzothioxanthene derivant, porphyrin Derivant, Nile red, 2- (1,1- dimethyl ethyl) -6- (2- (2,3,6,7- tetrahydrochysene -1,1,7,7- tetramethyl -1H, 5H- benzo (ij) quinolizine -9- base) vinyl) -4H- pyrans -4H- subunit) Cyanoacetyl-Cyacetazid (DCJTB), 4- (dicyano methylene) -2- methyl - 6- (to dimethylaminostyryl) -4H- pyrans (DCM) and ADS111RE (by American Dye Source Co., Ltd. (ADS) manufactures).

The example of red phosphorescence material is not particularly limited, as long as described material transmitting red phosphorescent, including：Iridium Complex such as Bt2Ir (acac) (double (2- phenylbenzothiazol root conjunction-N, C2') (acetopyruvic acid) iridium (III)) and Btp2Ir (acac) (double (2,2'- benzothienyl)-pyridine root conjunction-N, C3) (acetopyruvic acid) iridium), and the complex of platinum such as PtOEP (2,3,7,8,12,13,17,18- octaethyl -21H, 23H- porphyrin platinum (II)).

The example of green fluorescent material is not particularly limited, as long as described material transmitting green fluorescence, including：Quinoline a word used for translation Pyridine ketone such as coumarin derivative or quinacridone derivative and its derivant；Double [(9- ethyl -3- the carbazole)-sub- ethylene of 9,10- Base] anthracene, poly- (9,9- dihexyl -2,7- ethenylidene fluorenylidene), poly- [(9,9- dioctyl fluorene -2,7- diyl) -co- (1,4- bis- Phenylene vinylene -2- methoxyl group -5- { 2- ethyl hexyl oxy } benzene)], it is poly- that [(9,9- dioctyl -2,7- two ethenylidene is sub- Fluorenyl)-o- co- (2- methoxyl group -5- (2- ethyoxyl hexyloxy) -1,4- phenylene)] and ADS109GE (by American Dye Source Co., Ltd. manufacture).

The example of green phosphorescent material is not particularly limited, as long as described material transmitting green phosphorescence, including：Iridium network Compound such as Ir (ppy) 3 (facial-three (2- phenylpyridine) iridium) and Ppy2Ir (acac) (two (2- phenyl-pyridin root conjunction-N-C2) (acetylacetone,2,4-pentanedione) iridium).

The example of blue fluorescent material is not particularly limited, as long as described material transmitting blue-fluorescence, including：Hexichol Vinyl amine derivant such as diphenylethyllene diamine compounds；Fluoranthene derivative, pyrene derivatives, derivant, anthracene derive Thing, benzoZole derivatives, benzothiazole derivant, benzimidizole derivatives,Derivant, phenanthrene derivative, diphenylethyllene Double (9- ethyl -3- the carbazovinylene) -1,1'- biphenyl (BCzVBi) of benzene derivative, tetraphenylbutadiene, 4,4'-, poly- [(9, 9- dioctyl fluorene -2,7- diyl) -co- (2,5- dimethoxy benzene -1,4- diyl)], poly- [(9,9- bis- hexyloxy fluorenes -2,7- two Base)-o- co- (2- methoxyl group -5- { 2- ethyoxyl hexyloxy } phenylene -1,4- diyl)] and poly- [(9,9- dioctyl fluorene -2, 7- diyl) -co- (acetylenylbenzene)], ADS136BE (by American Dye Source Co., Ltd. manufactures).

The example of blue phosphor materials is not particularly limited, as long as described material transmitting blue phosphorescent, including：Iridium network Compound such as FIrpic (double (4,6- difluorophenyl-pyridine root conjunction-N, C2)-pyridine carboxylic acid iridium), Ir (pmb) 3 (iridium-three (1- benzene Base -3- tolimidazole quinoline -2- subunit-C, C (2) '), FIrN4 (double (conjunction of 4,6- difluorophenyl pyridinato root) (5- (pyridine -2- Base) tetrazolium root conjunction iridium (III))) and FIrtaz (double (conjunction of 4,6- difluorophenyl pyridinato root) (5- (pyridine -2- base) -1,2,4- Triazole root closes iridium (III))).

In addition, in addition to above-mentioned luminescent material, light emitting functional layer 6R, 6G and 6B can also comprise material of main part, to institute State material of main part and add the luminescent material as guest materials.Described material of main part has following function：By compound hole and Electronics and produce exciton and mobile (Foster (forster) is mobile or dexter to luminescent material by making exciton energy (dexter) mobile) and excitation light-emitting material.In the case of wherein using this material of main part, mixed by being used as dopant Material of main part can be used the luminescent material as guest materials.

The example of material of main part is not particularly limited, as long as described material is above-mentioned with respect to luminescent material displaying to be used Function, including：Low-molecular-weight material of main part such as TDAPB (1,3,5- tri--(N, N- couple-(4- methoxyl group-phenyl) aminobenzene Base)-benzene), CBP (4,4'- double (9- bis- carbazyl) 2,2'- biphenyl), BAlq (double-(conjunction of 2- methyl -8- quinolinol root) -4- (benzene Base phenol alcohol root close) aluminum), mCP (N, N- bis- carbazyl -3,5- benzene：CBP derivant), CDBP (double (the 9- carbazyl) -2 of 4,4'-, 2'- dimethyl-biphenyl), DCB (N, N'- bis- carbazyl -1,4- dimethylene-benzene), P06 (2,7- double (diphenyl phosphine oxide) - 9,9- dimethyl fluorene), SimCP (3,5- double (9- carbazyl) tetraphenyl silane) and UGH3 (W- couple (triphenyl-silyl) Benzene), and can be in combination using one or more these material.

Preferably, the constituent material of light emitting functional layer 6R and 6G dissolves in solvent, above-mentioned hole in described solvent The constituent material of transport layer 5R and 5G is solvable.In this way, using same solvent, luminous work(can be formed by liquid phase method Ergosphere 6R and 6G and hole transmission layer 5R and 5G.That is, when light emitting functional layer 6R is formed and during 6G by liquid phase method, can use with The identical solvent being used during hole transmission layer 5R and 5G is being formed by liquid phase method.Therefore, light emitting functional layer 6R and 6G with The adhesion at the interface between hole transmission layer 5R and 5G or affinity can increase and carrier (hole) is from hole transmission layer 5R and 5G can improve to the transporting of light emitting functional layer 6R and 6G.

Additionally, the constituent material of light emitting functional layer 6R and 6G is preferably constructed simultaneously by the low molecular weight material as main material Low-molecular-weight material of main part construction more preferably by low-molecular-weight guest materials with as main material.In this way, due to setting Put hole transmission layer 7, by improving the luminous efficiency of light emitting functional layer 6R and 6G, can compensate for the luminous effect of light-emitting component 1R and 1G The decline of rate.As a result, the light transmitting of light-emitting component 1R and 1G and light-emitting component 1B can excellently balance.From this point to consider, low Content in light emitting functional layer 6R and 6G for the molecular weight material is preferably 60 weight % or higher, more preferably 80 weight % or more Height, and most preferably 90 weight % or higher.

The thickness of each light emitting functional layer 6R, 6G and 6B is not particularly limited, preferably 5nm～100nm, more preferably 10nm ～50nm.

[electron transfer layer]

Electron transfer layer 8 has and will be transferred to light emitting functional layer 6B by electron injecting layer 9 from negative electrode 10 injected electrons Function.

The example of the constituent material (electron transport material) of electron transfer layer 8 includes BAlq, OXD-1 (1,3,5- tri- (5- (4- tert-butyl-phenyl) -1,3,4-Diazole)), BCP (bathocuproine), PBD (2- (4- biphenyl) -5- (4- tert-butyl-phenyl) -1, 2,4-Diazole), (4,4'- is double, and (1,1- is double for TAZ (3- (4- biphenyl) -5- (4- tert-butyl-phenyl) -1,2,4- triazole), DPVBi Diphenylacetylene)-biphenyl), BND (double (1- naphthyl) -1,3,4- of 2,5-Diazole), the DTVBi (double (double (4- of 1,1- of 4,4'- Aminomethyl phenyl) vinyl) biphenyl), BBD (double (4- xenyl) -1,3,4- of 2,5-Diazole), three (conjunction of 8- quinolinol root) aluminum (Alq3)、Oxadiazole derivative,Zole derivatives, phenanthroline derivative, anthraquinone-diformazan alkane derivatives, quinone derivatives, naphthoquinone Derivant, anthraquinone derivative, four cyano anthraquinone diformazan alkane derivatives, fluorene derivative, diphenyl dicyanoethylene derivant, biphenyl Quinone derivative and 8-hydroxyquinoline derivative, and can be in combination using one or more these material.

The thickness of electron transfer layer 8 is not particularly limited, preferably 1nm～100nm, more preferably 5nm～50nm.

In addition, according to the constituent material of another layer or thickness, electron transfer layer 8 can be omitted.

[electron injecting layer]

Electron injecting layer 9 has the function of improving the electron injection efficiency from negative electrode 10.

The example of the constituent material (electron injection material) of electron injecting layer 9 includes various inorganic insulating materials and various nothing Machine semi-conducting material.

The example of inorganic insulating material includes alkali metal chalkogenide (oxide, sulfide, selenides or tellurides), alkali The halogenide of earth metal chalkogenide, alkali-metal halogenide and alkaline-earth metal, and can be in a joint manner using a kind of or many Plant these materials.Electron injection can be improved by using these materials as main material construction electron injecting layer further Matter.Especially, constructing electron injecting layer 9 by using these materials makes light-emitting component 1 be obtained in that high briliancy, this is because Alkali metal compound (alkali metal chalkogenide, alkali-metal halogenide etc.) has minimum work function.

The example of alkali metal chalkogenide includes Li₂O、LiO、Na₂S、Na₂Se and NaO.The reality of alkaline-earth metal chalkogenide Example includes CaO, BaO, SrO, BeO, BaS, MgO and CaSe.The example of alkali-metal halogenide include CsF, LiF, NaF, KF, LiCl, KCl and NaCl.The example of the halogenide of alkaline-earth metal includes CaF₂、BaF₂、SrF₂、MgF₂And BeF₂.

In addition, the example of inorganic semiconductor material includes oxide containing at least one element in following element, nitridation Thing or nitrogen oxides：Li, Na, Ba, Ca, Sr, Yb, Al, Ga, In, Cd, Mg, Si, Ta, Sb and Zn, and can make in a joint manner With one or more these material.

The thickness of electron injecting layer 9 is not particularly limited, preferably 0.01nm～10nm, more preferably 0.1nm～10nm.

In addition, according to the constituent material of another layer or thickness, electron injecting layer 9 can be omitted.

[negative electrode]

Negative electrode 10 is by the electrode of electron injection electron transfer layer 8 by electron injecting layer 9.Composition material as negative electrode 10 Material, preferably uses the material with little work function.

The example of the constituent material of negative electrode 10 includes：Li、Mg、Ca、Sr、La、Ce、Er、Eu、Sc、Y、Yb、Ag、Cu、Al、 Cs and Rb, or comprise the alloy of these elements, and can be in a joint manner using one or more these materials (for example multiple layer Layered product etc.).

Especially, in the case of the constituent material that alloy is used as negative electrode 10, preferably use and comprise stable metal element As the alloy of Ag, Al and Cu or the alloy of such as MgAg, AlLi or CuLi.By this alloy being used as the composition material of negative electrode 10 Material can improve electron injection efficiency and the stability of negative electrode 10.

The light-emitting component 1 being additionally, since present embodiment is bottom emission type, so negative electrode 10 can not have printing opacity Property.In the case that light-emitting component 1 is bottom emission type wherein, preferably metal or alloy such as Al, Ag, AlAg and AlNd are used as The constituent material of negative electrode 10.The electronics of negative electrode 10 can be improved by this metal or alloy being used as the constituent material of negative electrode 10 Injection efficiency and stability.

In the case of bottom emission type, the thickness of negative electrode 10 is not particularly limited, preferably 50nm～1000nm, more excellent Elect 100nm～500nm as.

In addition, in the case that light-emitting component 1 is top emission type wherein, preferably by metal or alloy such as MgAg, MgAl, MgAu and AlAg is used as the constituent material of negative electrode 10.Can be by this metal or alloy being used as the constituent material of negative electrode 10 Improve electron injection efficiency and the stability of negative electrode 10 while the light transmission guaranteeing negative electrode 10.

In the case of top emission type, the thickness of negative electrode 10 is not particularly limited, preferably 1nm～50nm, more preferably 5nm～20nm.

According to luminescent device 100 constructed as described above, form each hole transmission layer 5R, 5G respectively using liquid phase method With 5B with light emitting functional layer 6R and 6G for various elements and using vapor phase method difference in light-emitting component 1R, 1G and 1B jointly Form hole transmission layer 7 and light emitting functional layer 6B.Therefore, it is possible to high efficiency manufacture light-emitting component 1R, 1G and 1B.

When forming light-emitting component 1R, 1G and 1B in this way, can be by using the vapor phase method phase with light emitting functional layer 6B With the hole transmission layer 7 that formed of vapor phase method be arranged on hole transmission layer 5B in light-emitting component 1B and light emitting functional layer 6B it Between, and thus when from its hole-transporting layer 5B contact laminating by the manufacture different with the manufacture method of hole transmission layer 5B When situation in light emitting functional layer 6B of method manufacture is compared, and carrier is between hole transmission layer 5B and light emitting functional layer 6B Mobile related electronic barrier can reduce.Therefore, carrier (hole) smooth transport is to light emitting functional layer 6B such that it is able to carry High-luminous-efficiency.

On the other hand, in light-emitting component 1R and 1G, due to being arranged on light emitting functional layer 6R and 6G and light emitting functional layer 6B Between hole transmission layer 7 very thin, so carrier (electronics) can from light emitting functional layer 6B be delivered to light emitting functional layer 6R and 6G.Therefore, so that light emitting functional layer 6R and 6G can optionally light and light emitting functional layer 6B in light-emitting component 1R and 1G Do not light.

Additionally, because hole transmission layer 7 is very thin, the light-emitting component being caused by setting hole transmission layer 7 can be suppressed The rising of the driving voltage of 1R, 1G and 1B.

For these reasons, sending out in multiple light-emitting component 1R, 1G and the 1B comprising there is glow color different from each other In optical device 100, can improve each light-emitting component 1R, 1G and 1B luminous efficiency and can high efficiency manufacture luminescent device 100.

[method manufacturing luminescent device]

Hereinafter, the example of the method to the above-mentioned luminescent device 100 of manufacture is illustrated.

Fig. 2A～4C is the figure manufacturing the method for luminescent device shown in Fig. 1 for description.Hereinafter, respectively will walk by ordered pair Suddenly illustrate.

(1) first, prepare circuit substrate 20, described circuit substrate 20 forms anode 3R, 3G and 3B, and and then press figure Form spacer 31 shown in 2A.

Using electrode material, film forming is implemented on circuit substrate 20 in the gas phase membrane formation process using such as sedimentation or CVD Afterwards, form pattern by using etching etc. on electrode material, anode 3R, 3G and 3B can be obtained.

Additionally, by using photoetching process in the way of anode 3R, 3G and 3B expose formation figure on anode 3R, 3G and 3B Case, can form spacer 31.

Herein, the constituent material of spacer 31 is considering thermostability, liquid-repellant, the solvent resistance of ink and to circuit base Selected in the case of adhesion of plate 20 etc..Specifically, the example of spacer 31 includes acrylic resin, polyimides The organic material of resin, such as epoxy resin and such as SiO₂Inorganic material.

In addition, after forming anode 3R, 3G and 3B and spacer 31, can be to anode 3R, 3G and 3B and isolation The surface of thing 31 carries out oxygen plasma process.In this way, it is possible to lyophily property is applied to the surface of anode 3R, 3G and 3B To remove the organic substance that (washing off) adheres to the surface of anode 3R, 3G and 3B and spacer 31, and adjust anode 3R, 3G and 3B Work function in marginal surface.

Herein, the condition processing as oxygen plasma, the such as preferably from about plasma power of 100W～800W, about 50ml/ minute～the oxygen gas flow rate of 100ml/ minute, the pending component of about 0.5mm/ second～10mm/ second (anode 3R, 3G and Transmission speed 3B) and the temperature of about 70 DEG C～90 DEG C of circuit substrate 20.

In addition, after oxygen plasma is processed, preferably as processing gas such as CF₄Fluorine type gas under implement etc. Gas ions are processed.In this way, the surface only with the spacer 31 being made up of the photosensitive resin as organic material for the fluorine type gas React and repel liquid.Therefore, it is possible to decrease be applied to the unnecessary moistening spread of the liquid within spacer 31.

(2) next, as shown in Figure 2 B, from ink-spraying-head 200, the ink 4a being used for being formed hole transmission layer is applied Each anode 3R, 3G and 3B in spacer 31.

Ink 4a makes the constituent material of hole injection layer 4R, 4G and 4B or the dissolving of its precursor in a solvent or is dispersed in point In dispersion media.The example of described solvent or disperse medium includes multiple inorganic solvents, multiple organic solvent and the mixing comprising it Solvent.

Subsequently, (remove solvent or remove disperse medium) real on demand by being dried to the ink 4a on anode 3 Heat treatment, by formation hole injection layer 4R, 4G and 4B shown in Fig. 2 C.

Removed by ink being pressed its parent form under atmospheric pressure or in reduced atmosphere, and implement heat treatment, or injection Noble gases, can implement drying, but it is preferred that being dried under reduced pressure 10 minutes～1 hour in the vacuum of 5Pa or lower Afterwards, heat in baking oven under atmospheric pressure within the temperature range of 150 DEG C～250 DEG C and ink is dried 5 minutes～10 minutes. Therefore, it is possible to form hole injection layer 4R, 4G and 4B flat and that there is excellent specific property.

As described above, hole injection layer 4R, 4G and 4B are formed by liquid phase method using ink 4a.

(3) next, as illustrated in fig. 2d, from ink-spraying-head 200, the ink 5a being used for being formed hole transmission layer is applied Each hole injection layer 4R and 4G in spacer 31.

Ink 5a makes the constituent material of hole transmission layer 5R and 5G or the dissolving of its precursor in a solvent or be dispersed in dispersion In medium.The example of described solvent or disperse medium includes multiple inorganic solvents, multiple organic solvent and to comprise its mixing molten Agent.

Subsequently, by the ink 5a on hole injection layer 4R and 4G is dried with (remove solvent or remove disperse medium) And implement heat treatment on demand, by forming hole transmission layer 5R and 5G shown in Fig. 3 A.

Removed by ink being pressed its parent form under atmospheric pressure or in reduced atmosphere, and implement heat treatment, or injection Noble gases, can implement drying, but it is preferred that being dried under reduced pressure 10 minutes～1 hour in the vacuum of 5Pa or lower Afterwards, heat in baking oven under nitrogen atmosphere within the temperature range of 150 DEG C～250 DEG C and ink is dried 5 minutes～30 minutes. Therefore, it is possible to form hole transmission layer 5R and 5G flat and that there is excellent specific property.

As described above, hole transmission layer 5R and 5G is formed by liquid phase method using ink 5a.

(4) next, as shown in Figure 3 B, will be used for being formed ink 6a and 6b of light emitting functional layer from ink-spraying-head 200 It is applied to each hole transmission layer 5R and 5G in spacer 31.

Ink 6a makes the constituent material of light emitting functional layer 6R or the dissolving of its precursor in a solvent or be dispersed in disperse medium In.Ink 6b makes the constituent material of light emitting functional layer 6G or the dissolving of its precursor in a solvent or be dispersed in disperse medium.Institute State solvent or the example of described disperse medium includes multiple inorganic solvents, multiple organic solvent and the mixed solvent comprising it.

Subsequently, by ink 6a and 6b on hole transmission layer 5R and 5G is dried with (removing solvent or removing dispersion Medium) and implement heat treatment on demand, by forming light emitting functional layer 6R and 6G shown in Fig. 3 C.

Removed by ink being pressed its parent form under atmospheric pressure or in reduced atmosphere, and implement heat treatment, or injection Noble gases, can implement drying, but it is preferred that being dried under reduced pressure 10 minutes～1 hour in the vacuum of 5Pa or lower Afterwards, heat in baking oven under nitrogen atmosphere within the temperature range of 150 DEG C～250 DEG C and ink is dried 5 minutes～30 minutes. Therefore, it is possible to form light emitting functional layer 6R flat and that there is excellent specific property and 6G.

As described above, light emitting functional layer 6R and 6G are formed by liquid phase method using ink 6a and 6b.

(5) next, as shown in fig.3d, from ink-spraying-head 200, the ink 5b being used for being formed hole transmission layer 5B is applied It is added to the hole injection layer 4B in spacer 31.

Ink 5b makes the constituent material of hole transmission layer 5B or the dissolving of its precursor in a solvent or be dispersed in disperse medium In.The example of described solvent or described disperse medium includes multiple inorganic solvents, multiple organic solvent and to comprise its mixing molten Agent.

Subsequently, by the ink 5b on hole injection layer 4B being dried with (remove solvent or remove disperse medium) and pressing Need implement heat treatment, by formation hole transmission layer 5B shown in Fig. 4 A.

Removed by ink being pressed its parent form under atmospheric pressure or in reduced atmosphere, and implement heat treatment, or injection Noble gases, can implement drying, but it is preferred that being dried under reduced pressure 10 minutes～1 hour in the vacuum of 5Pa or lower Afterwards, heat in baking oven under nitrogen atmosphere within the temperature range of 150 DEG C～250 DEG C and ink is dried 5 minutes～30 minutes. Therefore, it is possible to form hole transmission layer 5B flat and that there is excellent specific property.

As described above, hole transmission layer 5B is formed by liquid phase method using ink 5b.

(6) next, as shown in Figure 4 B, light emitting functional layer 6R and 6G and hole transmission layer 5B sequentially form hole Transport layer 7, light emitting functional layer 6B, electron transfer layer 8, electron injecting layer 9 and negative electrode 10, thus crossing spacer 31 and covering and send out Light functional layer and hole injection layer.

Dry plating method using vacuum moulding machine etc. can form hole transmission layer 7, lighting function respectively by vapor phase method Layer 6B, electron transfer layer 8, electron injecting layer 9 and negative electrode 10.

(7) last, as shown in FIG. 4 C, hermetic sealing substrate 40 is adhered to negative electrode 10 by resin bed 32 (sealant).With This mode, can obtain luminescent device 100.

As set forth above, it is possible to form hole transmission layer 5R, 5G and 5B and light emitting functional layer 6R and 6G respectively using liquid phase method For various elements, and using vapor phase method, hole transmission layer 7 is jointly formed on light-emitting component 1R, 1G and 1B respectively and light Functional layer 6B.Therefore, it is possible to high efficiency manufacture light-emitting component 1R, 1G and 1B.

[electronic installation]

Fig. 5 is the perspective view of the construction of movement (or on knee) personal computer showing and applying electronic installation of the present invention.

In in figure, personal computer 1100 is by the main body 1104 including keyboard 1102 and the display unit including display portion 1106 compositions, and display unit 1106 rotates support by main body 1104 by hinge arrangement.

In personal computer 1100, including the display portion in display unit 1106 by above-mentioned luminescent device 100 structure Become.

Fig. 6 is the perspective view of the construction of mobile phone (including PHS) showing and applying electronic installation of the present invention.

In in figure, mobile phone 1200 includes multiple operation buttons 1202, earphone 1204, microphone 1206 and display portion.

In mobile phone 1200, display portion is made up of above-mentioned luminescent device 100.

Fig. 7 is the perspective view showing the construction of digital still camera applying electronic installation of the present invention.In addition, in figure The connection with external devices for the simple displaying.

Herein, although ordinary camera makes silver halide photography film expose by the optical imagery of object, digital still Photographing unit 1300 carries out opto-electronic conversion by using the image-forming component of such as charge-coupled image sensor (CCD) to the optical imagery of object And produce imaging signal (picture signal).

Display portion is arranged on the back side of the housing (main body) 1302 in digital still camera 1300, and with based on source The mode implementing to show and serve as the finder that object is shown as electronic image from the imaging signal of CCD constructs.

In digital still camera 1300, described display portion is made up of above-mentioned luminescent device 100.

Circuit substrate 1308 is arranged in the housing.The memorizer that (memory) imaging signal wherein can be stored is arranged in In circuit substrate 1308.

In addition, the light receiving unit 1304 comprising optical lenses (imaging optical system) or CCD is arranged on housing 1302 Front-surface side (the back surface side in the construction shown in figure) on.

When photographer confirms the object images being shown in display portion and presses shutter release button 1306, the imaging of CCD Signal is transferred and is stored in the memorizer of circuit substrate 1308.

In addition, in digital still camera 1300, the video signal output terminal 1312 of data communication and defeated will be used for Enter and be arranged on the side surface of housing 1302 with lead-out terminal 1314.Additionally, as illustrated, TV Monitor 1430 and individual are counted Calculation machine 1440 is connected respectively to video signal output terminal 1312 and input and output side for data communication as needed 1314.Additionally, being constructed to the imaging signal in the memorizer being stored in circuit substrate 1308 with defeated by predetermined operation Go out to TV Monitor 1430 and personal computer 1440.

The electronic installation of the present invention has excellent reliability.

In addition, except the number in the personal computer (mobile personal computer) in Fig. 5, the mobile phone and Fig. 7 in Fig. 6 Outside word still camera, the electronic installation of the present invention can be applied to such as TV, video camera, type magnetic tape video recorder of finding a view, Monitor direct viewing type magnetic tape video recorder, laptop PC, auto-navigation system, pager, electronic notebook (have logical Telecommunication function), e-dictionary, electronic calculator, electronic game machine, word processor, work station, videophone, for safety TV Monitor, electronics binoculars, POS terminal, the device (ATM of such as financial institution or automatic of inclusion contact panel Ticket machine), medical treatment device (such as electronic clinical thermometer, sphygomanometer, blood glucose meter, ECG display device, ultrasonic diagnostic equipment or interior peep Mirror display device), fish finder, various measurement apparatus, instrument (instrument of such as vehicle, aircraft and ship), aviation simulator, Various monitors and projection-type display apparatus such as projector.

Above, by reference to the embodiment shown in figure, the luminescent device of the present invention and electronic installation are retouched State, but the present invention is not restricted to this.

Embodiment：Part A

Next, embodiments of the present invention will be explained in detail.

(1. manufacturing light-emitting component)

[embodiment 1]

First, preparation has the transparent glass substrate of 0.5mm thickness.Next, tool is formed on substrate using sputtering method The ITO electrode (first anode, second plate and third anode) having 100nm thickness is using each pixel electrode as rgb pixel. Subsequently, form the insulating barrier be made up of acrylic resin, and by using photoetching process in the way of exposing each ITO electrode It is patterned on described insulating barrier form spacer (dike).

In addition, substrate being impregnated in acetone and then so that substrate is experienced at oxygen plasma after impregnating in 2- propanol Reason and argon plasma are processed, and are washed with ultrasound wave.The state at 70 DEG C～90 DEG C, each substrate being heated Under implement these corona treatments under 100w plasma power, under the gas flow rate of 20sccm and continue 5 seconds Process time.

Next, will be used for forming each spacer that the ink of hole injection layer is filled in rgb pixel using ink-jet method (partition) in, it is applied to ITO electrode, is dried under reduced pressure, and then carry out heat treatment (firing), be consequently formed and have The hole injection layer of 50nm thickness.

Herein, as the ink for forming hole injection layer, using PEDOT:The water of 0.5 weight % of PSS mixture Property dispersion.Additionally, firing under atmospheric pressure at a temperature of 200 DEG C 10 minutes.

Next, will be used for forming each spacer that the ink of hole transmission layer is filled in RG pixel using ink-jet method In, it is applied to hole injection layer, is dried under reduced pressure, and then carry out heat treatment (firing), be consequently formed with 20nm thickness Hole transmission layer (first and the 3rd hole transmission layer).

Herein, as the ink for forming hole transmission layer, using comprise 1.5 weight %TFB (poly- (9,9- dioctyls- Fluorenes -co- N- (4- butyl phenyl)-diphenylamines)) durol solution.Additionally, being filled with nitrogen at a temperature of 200 DEG C Glove box in fire 30 minutes.

Next, will be used for forming each spacer that the ink of light emitting functional layer is filled in RG pixel using ink-jet method In, it is applied to hole transmission layer, is dried under reduced pressure, and then carry out heat treatment (firing), be consequently formed with 20nm thickness Light emitting functional layer (first and the 3rd light emitting functional layer).

Herein, as the ink for forming light emitting functional layer, form durol solution (concentration 1.2 weight %), its In 90:10 weight is than lower by CBP (4,4'- pair of (9- bis- carbazyl) -2,2'- biphenyl) and Ir (ppy) 3 (facial-three (2- Phenylpyridine) iridium) it is mixed with each other.In addition, carrying out drying in 10 minutes under the vacuum of 5Pa or lower under reduced pressure.Additionally, Fire in the glove box being filled with nitrogen at a temperature of 220 DEG C 10 minutes.

Next, be filled in the spacer of B pixel the ink being used for being formed hole transmission layer using ink-jet method, apply To hole injection layer, it is dried under reduced pressure, and then carries out heat treatment (firing), be consequently formed the hole biography with 20nm thickness Defeated layer (the second hole transmission layer).

Herein, as the ink for forming hole transmission layer, using the CHB comprising α-NPD with the concentration of 0.3 weight % (cyclohexyl benzene), it is low-molecular-weight hole mobile material.Additionally, at a temperature of 160 DEG C in the glove box being filled with nitrogen Fire 10 minutes.

Next, utilize to pass through to be deposited on for the material (for forming the material in intermediate layer) forming hole transmission layer Implement film forming on rgb pixel, be consequently formed the hole transmission layer (public hole transmission layer (intermediate layer)) with 1nm thickness.

Herein, as the material (for forming the material in intermediate layer) for forming hole transmission layer, using α-NPD, its For low-molecular-weight hole mobile material.

Next, utilizing for the material forming light emitting functional layer by being deposited on enforcement film forming on rgb pixel, by this shape Become there is the light emitting functional layer (the second light emitting functional layer) of 20nm thickness.

Herein, as the material for forming light emitting functional layer, using wherein to 90 mass parts CBP (4,4'- double (9- bis- Carbazyl) 2,2'- biphenyl) doping 10 mass parts FIrpic material.In addition, under the vacuum of 5Pa or lower under reduced pressure It is dried 10 minutes.

Next, utilizing Alq₃Film forming is implemented in the second light emitting functional layer by vacuum deposition method, is consequently formed and has The electron transfer layer of 20nm thickness.

Next, film forming is implemented on the electron transport layer by vacuum deposition method using lithium fluoride (LiF), it is consequently formed tool There is the electron injecting layer of 1nm thickness.

Next, film forming is implemented on electron injecting layer by vacuum deposition method using Al, it is consequently formed thick with 200nm The negative electrode being made up of Al of degree.

In the above-mentioned methods, manufactured the luminescent device comprising rgb pixel (the first to the 3rd light-emitting component).

[embodiment 2]

To have manufactured luminescent device with above-described embodiment 1 identical mode, difference is, will be empty as low-molecular-weight α-the NPD of hole transport materials and TFB (poly- (the 9,9- dioctyl-fluorenes -co- N- (4- fourth as high molecular hole mobile material Base phenyl) diphenylamines)) mixing material (be calculated as 50 in mass ratio:50 mixing ratio) passed with acting on the hole forming B pixel The material of defeated layer (the second transport layer).

[embodiment 3]

To have manufactured luminescent device with above-described embodiment 1 identical mode, difference is, utilizes luminous for being formed The ink of functional layer is coated to RG pixel, utilizes and for the ink forming hole transmission layer, B pixel is coated and divides Do not implement to be dried and fire in these pixels.

[embodiment 4]

To have manufactured luminescent device with above-described embodiment 2 identical mode, difference is, utilizes luminous for being formed The ink of functional layer is coated to RG pixel, utilizes and for the ink forming hole transmission layer, B pixel is coated and divides Do not implement to be dried and fire in these pixels.

[embodiment 5]

To have manufactured luminescent device with above-described embodiment 1 identical mode, difference is, 3- phenoxytoluene is used Make solvent for forming the ink of the light emitting functional layer for RG pixel and for formation for the hole transmission layer of B pixel Various ink in ink.

[embodiment 6]

To have manufactured luminescent device with above-described embodiment 2 identical mode, difference is, 3- phenoxytoluene is used Make solvent for forming the ink of the light emitting functional layer for RG pixel and for formation for the hole transmission layer of B pixel Various ink in ink.

[embodiment 7]

To have manufactured luminescent device with above-described embodiment 3 identical mode, difference is, 3- phenoxytoluene is used Make solvent for forming the ink of the light emitting functional layer for RG pixel and for formation for the hole transmission layer of B pixel Various ink in ink.

[embodiment 8]

To have manufactured luminescent device with above-described embodiment 4 identical mode, difference is, 3- phenoxytoluene is used Make solvent for forming the ink of the light emitting functional layer for RG pixel and for formation for the hole transmission layer of B pixel Various ink in ink.

[embodiment 9]

To have manufactured luminescent device with above-described embodiment 1 identical mode, difference is, by public hole transmission layer The thickness in (intermediate layer) is set to 1.5nm.

[embodiment 10]

To have manufactured luminescent device with above-described embodiment 1 identical mode, difference is, by public hole transmission layer The thickness in (intermediate layer) is set to 2nm.

(comparative example 1)

To have manufactured luminescent device with above-described embodiment 1 identical mode, difference is, by public hole transmission layer The thickness in (intermediate layer) is set to 3nm.

(comparative example 2)

To have manufactured luminescent device with above-described embodiment 1 identical mode, difference is, omits public hole transport The formation of layer (intermediate layer).

(2. evaluating)

When the sending out of measurement rgb pixel in the luminescent device of each embodiment manufacturing in the above described manner and each comparative example During life-span (LT50) of optical element, the life-span between the light-emitting component of the light-emitting component of R pixel and G pixel and B pixel is at each Obtain excellent balance in the luminescent device of embodiment and when compared with the luminescent device of each comparative example, each pixel luminous The life-span of element is excellent.

Measurement knot by the life-span of the light-emitting component of G pixel in the luminescent device with comparative example 1 and 2 for the embodiment 1,9 and 10 Fruit is shown in Fig. 8 A.In addition, the life-span by the light-emitting component of B pixel in the luminescent device with comparative example 1 and 2 for the embodiment 1 and 10 Measurement result be shown in Fig. 8 B.

Additionally, when compared with the luminescent device of embodiment 1, the light-emitting component tool of the G pixel of the luminescent device of embodiment 2 There is high light emission effciency.

Embodiment：Part B

The manufacture of the OLED based on solution

Document such as WO 2004/037887 has described many to the manufacture of such OLED based on solution Secondary.Additionally, the manufacture to the OLED based on vacuum describes repeatedly for example in WO 2004/058911.Next retouching In the embodiment stated, in an OLED, apply based on solution or the layer based on vacuum, wherein from solution implement include red The process of normal complexion green light emitting layer, but to subsequent layer, (public blue light-emitting layer, hole blocking layer and electronics pass in a vacuum Defeated layer) processed.Make the above-mentioned general condition (thickness, the change of material) processing adaptation and/or being attached to the application.

Red and green luminousing element structure is as follows：

- substrate

-ITO(50nm)

- hole injection layer (for green components be 60nm for 20nm and for red element)

- hole transmission layer (HTL) (20nm)

- luminescent layer (EML) (60nm)

- public blue light-emitting layer (BCL) (20nm)

- electron transfer layer (ETL) (20nm)

- negative electrode

The structure of blue light emitting device is as follows：

- substrate

-ITO(50nm)

- hole injection layer (20nm)

- hole transmission layer (HTL) (40nm)

- luminescent layer (BCL) (20nm)

- electron transfer layer (ETL) (20nm)

- negative electrode

In the case of green and red light-emitting component between luminescent layer and public blue light-emitting layer, and in blue-light-emitting In the case of element between hole transmission layer and public cyan coloring layer, introduce public hole transmission layer, also referred to as " surface changes for it Enter layer (SIL) ".Comparative example referenced below does not have this public hole transmission layer.

Substrate is served as with the glass plate that the thickness of 50nm is coated with structuring ITO (indium tin oxide).In order to more preferably process, Using PEDOT:PSS is coated to it.PEDOT:PSS (poly- (3,4- enedioxy -2,5- thiophene):Poly styrene sulfonate) Buying German Heraeus Precious Metals GmbH＆Co.KG (congratulating Li Shi noble metal company) certainly.In atmosphere from water Middle enforcement PEDOT:The spin coating of PSS.Subsequently, pass through heating at 180 DEG C on air to PEDOT:PSS is dried 10 minutes, from And remove the residue of water.Hole transmission layer and luminescent layer are applied to the glass plate of these coatings.The hole transmission layer using It is crosslinkable.The hole transport polymer of following structure is used for redness and green pixel, it can be according to WO2010/ 097155 synthesis.

Hole transport polymer is dissolved in toluene.If as realized for device typical 20nm here with spin coating Thickness degree, the typical solid content of this solution is about 5g/l.By in inert gas atmosphere, in this case for reality in argon Apply spin coating, apply described layer, and described layer was dried in 60 minutes by heating at 180 DEG C.

Red and luminescent layer is made up of at least one matrix material (material of main part) and light-emitting dopant (luminous body) all the time. Furthermore, it is possible to there is the mixture of multiple matrix materials and co-dopant.Such as H1 (40%):H2 (40%):D4's (20%) Statement is referred to herein as material H1 is present in luminescent layer with the ratio of 40 weight %, and material H2 is existed with the ratio of 40 weight % In luminescent layer, and dopant D4 is present in luminescent layer with the ratio of 20 weight %.The mixture being used for luminescent layer is dissolved in In toluene or optional chlorobenzene.If as realized the thickness degree for the typical 60nm of device, this solution here with spin coating Typical solid content be about 18g/l.By, in inert gas atmosphere, in this case for implementing spin coating in argon, applying institute State layer, and described layer was dried in 10 minutes by heating at 160 DEG C.The matrix material being used in the embodiment of the present invention is shown in In table 1.

Form the material for public blue light-emitting layer and electron transfer layer by thermal evaporation in a vacuum chamber.This Place, for example electron transfer layer can be constituted by exceeding a kind of material, by coevaporation, it is mixed with each other with specific volume ratio. Such as ETM1:ETM2 (50%:50%) statement is referred to herein as material ETM1 and ETM2 with 95%:5% volume ratio is present in In layer.The material being used in the embodiment of the present invention is shown in Table 1.

There is by thermal evaporation the aluminium lamination of 100nm thickness, form negative electrode.

Using standard technique, described OLED is characterized.For this reason, determining electroluminescent spectrum, assuming lambert's luminescence feature Current/voltage/luminous density characteristic curve (IUL characteristic curve) and (operation) life-span.Described IUL characteristic curve is used for determining specific Characteristic number under brightness such as working voltage (unit is V) and external quantum efficiency (unit is %).LT80@10000cd/m²It is OLED From 10000cd/m²Original intensity to drop to the 80% of initial strength be 8000cd/m²When life-span.

The photoelectric characteristic of different OLED is summarized in table 12～17.Embodiment Comp_R, Comp_G, Comp_B and Comp_B2～6 are the comparative examples according to prior art, and embodiment E_R, E_G, E_B and E_B2～8 show to have and used The data of the OLED of layer composition of material and the present invention.

Next, being described in detail to some embodiments, with the advantage being specifically used for the material in the present invention.However, It is noted that it only have selected the partial data being shown in table 12～17.

Described public hole transmission layer (layer (SIL) is improved on surface) and claimed at least one polymer and at least It is higher that the composite bed of kind small molecular weight compounds leads to the blue pixel in blue common layer OLED to have together OLED performance.Compared with the device without public hole transmission layer, once including public hole transmission layer, then efficiency and life-span Both improve.

As shown in embodiment E_B and comparative example Comp_B, for blue pixel, the life-span exceedes twice, and (20 hours little to 9 When), efficiency increases to over 10% and in 1000cd/m²Under driving voltage be down to 4.1V from 4.3V.For red and green picture Element, efficiency only slightly decreases (less than 3%).Red and green pixel life-span declines as trading off to realize more preferable blueness Performance.

All combinations of materials referring to show this actively impact to blue pixel performance.Redness and green pixel performance Only slightly decrease.

Table 1：Structural formula for the material in OLED

Table 2：Structural formula for the material in public hole transmission layer

Table 3：Structural formula for the polymer in the hole transmission layer of OLED

Table 4：Mixture for the polymer in the hole transmission layer of OLED and SIL material

Can use different from 50:Other mixing ratios of 50 polymer and corresponding SIL material are improving processability/printing Adaptive.

Next, showing the embodiment of device.In order to clear the reason, be not expressly mentioned all the time identical layer (HIL, HTL, BCL, ETL, negative electrode and anode).The complete structure of different pixels is by constituting as follows：

Table 5：The example arrangement of rgb pixel

Table 6：There is no the rgb pixel of public hole transmission layer (SIL)

Table 7：There is the rgb pixel of public hole transmission layer (SIL)

Table 8：Comparative example；There is no the blue pixel of public hole transmission layer (SIL)

Table 9：Device embodiments, have public hole transmission layer (SIL) blue pixel (identical hole transmission layer, no Same public hole transmission layer)

Table 10：Device embodiments, have blue pixel (different hole transmission layers, the identical of public hole transmission layer Public hole transmission layer)

Table 11：Device embodiments, (also the SIL in hole transmission layer divides to have the blue pixel of public hole transmission layer Son, identical polymer)

Table 12：There is no the rgb pixel of public hole transmission layer (SIL)

Table 13：There is the rgb pixel of public hole transmission layer (SIL)

Table 14：Comparative example, does not have the blue pixel of public hole transmission layer (SIL)

Table 15：Device embodiments, have public hole transmission layer (SIL) blue pixel (identical hole transmission layer, no Same public hole transmission layer)

Table 16：Device embodiments, have blue pixel (different hole transmission layers, the phase of public hole transmission layer (SIL) Same public hole transmission layer)

Table 17：Device embodiments, the blue pixel with public hole transmission layer (SIL) is (also in hole transmission layer SIL molecule, identical polymer)

[reference numerals list]

1 light-emitting component

1B light-emitting component

1G light-emitting component

1R light-emitting component

3 anodes

3B anode

3G anode

3R anode

4B hole injection layer

4G hole injection layer

4R hole injection layer

4a ink

5B hole transmission layer

5G hole transmission layer

5R hole transmission layer

5a ink

5b ink

6B light emitting functional layer

6G light emitting functional layer

6R light emitting functional layer

6a ink

6b ink

7 hole transmission layers

8 electron transfer layers

9 electron injecting layers

10 negative electrodes

20 circuit substrates

21 substrates

22 interlayer dielectrics

23 switch elements

24 electric wires

31 spacers

32 resin beds

40 hermetic sealing substrates

100 luminescent devices

100R sub-pixel

100G sub-pixel

100B sub-pixel

200 inkjet heads

231 semiconductor layers

232 gate insulators

233 grids

234 source electrodes

235 drain electrodes

1100 personal computers

1102 keyboards

1104 main bodys

1106 display units

1200 mobile phones

1202 operation buttons

1204 earphones

1206 microphones

1300 digital still cameras

1302 housings

1304 light receiving units

1306 shutter release buttons

1308 circuit substrates

1312 video signal output terminals

1314 input and output side

1430 TV Monitors

1440 personal computers

Claims

1. a kind of luminescent device, described luminescent device comprises：

First light-emitting component, described first light-emitting component include the first anode, common cathode, be arranged on the described first anode with described The first hole transmission layer between common cathode and be arranged on described first with the state contacting with described first hole transmission layer The first light emitting functional layer between hole transmission layer and described common cathode；With

Second light-emitting component, described second light-emitting component include second plate, described common cathode, be arranged on described second plate with The second hole transmission layer between described common cathode, it is arranged on described second with the state contacting with described second hole transmission layer Public hole transmission layer between hole transmission layer and described common cathode and the shape to contact with described public hole transmission layer State is arranged on the second light emitting functional layer between described public hole transmission layer and described common cathode,

Wherein said public hole transmission layer with the state contacting with described first light emitting functional layer be arranged on described common cathode with Between described first light emitting functional layer, and

The thickness of described public hole transmission layer is 2nm or less.

2. luminescent device according to claim 1,

Wherein form described first hole transmission layer, described first light emitting functional layer and described second hole respectively using liquid phase method Transport layer, and

Form described public hole transmission layer and described second light emitting functional layer using vapor phase method.

3. luminescent device according to claim 1 and 2,

Wherein construct described first hole transmission layer using high molecular hole mobile material, and

Construct described second hole transmission layer and described public hole transmission layer using low-molecular-weight hole mobile material respectively.

4. luminescent device according to claim 3, wherein said second hole transmission layer and described public hole transmission layer The triarylamine compound comprising to have three aromatics or heteroaromatic ring system is as low-molecular-weight hole mobile material.

5. luminescent device according to claim 4, wherein said triarylamine compound has lower formula (I)：

Wherein

Ar¹～Ar³It is that there is the monocyclic of 5～60 aromatic ring atom when occurring every time in each case identical or differently Or multi-ring aromatics or heteroaromatic ring system, described aromatics or heteroaromatic ring system can be replaced by one or more group R；

R when occurring every time identical or differently be H, D, F, Cl, Br, I, N (R¹)₂, CN, NO₂, Si (R¹)₃, B (OR¹)₂, C (= O)R¹, P (=O) (R¹)₂, S (=O) R¹, S (=O)₂R¹, OSO₂R¹, there is straight chained alkyl, alkoxyl or the sulfur of 1～40 C atom For alkoxy base, or there is side chain or cyclic alkyl, alkoxyl or the thio alkoxy group of 3～40 C atoms, described base Each in group can be by one or more group R¹Replace, wherein one or more non-adjacent CH₂Group can be by R¹C= CR¹、C≡C、Si(R¹)₂, C=O, C=S, C=NR¹, P (=O) (R¹)、SO、SO₂、NR¹, O, S or CONR¹Replace, and wherein one Individual or multiple H atom can be replaced by D, F, Cl, Br, I or CN, or has the monocyclic or multi-ring of 5～60 aromatic ring atom Aromatics or heteroaromatic ring system, described aromatics or heteroaromatic rings system in each case can be by one or more group R¹Replace, Or there is aryloxy group or the heteroaryloxy group of 5～60 aromatic ring atom, described aryloxy group or heteroaryloxy group can be by One or more group R¹Replace, or there is aralkyl or the heteroaralkyl group of 5～60 aromatic ring atom, described aralkyl Or heteroaralkyl group can be by one or more group R¹Replace, or there is the ammonia diaryl base of 10～40 aromatic ring atom Group, di (hetero) arylamino groups or aryl heteroaryl amino group, described diarylamino groups, di (hetero) arylamino groups Or aryl heteroaryl amino group can be by one or more group R¹Replace, or crosslinkable group Q, two of which or more Individual group R can also form monocyclic or multi-ring aliphatic series, aromatics and/or benzo-fused ring system each other；

R¹Identical or be differently H, D, F when occurring every time, or there is the aliphatic hydrocarbon group of 1～20 C atom, have 5～20 The aromatics of individual C atom and/or heteroaromatic hydrocarbyl group, wherein one or more H atom can also be replaced by F；Two of which or more Multiple substituent R¹Monocyclic or multi-ring aliphatic series or aromatics ring system can also be formed each other.

6. the luminescent device according to any one of Claims 1 to 5, wherein passes through to comprise to have to pass with described public hole The material of the same or similar characteristic of characteristic of the constituent material of defeated layer, constructs described second hole transmission layer.

7. the luminescent device according to any one of claim 3～6, wherein except described low-molecular-weight hole mobile material Outside, described second hole transmission layer is constructed in the way of also comprising high molecular hole mobile material.

8. luminescent device according to claim 7, wherein said high molecular hole mobile material is to comprise following formula (XI) At least one construction unit polymer：

Wherein

R when occurring every time identical or differently be H, D, F, Cl, Br, I, N (R¹)₂, CN, NO₂, Si (R¹)₃, B (OR¹)₂, C (= O)R¹, P (=O) (R¹)₂, S (=O) R¹, S (=O)₂R¹, OSO₂R¹, there is straight chained alkyl, alkoxyl or the sulfur of 1～40 C atom The side chain that for alkoxy base or there are 3～40 C atoms or cyclic alkyl, alkoxyl or thio alkoxy group, described base Each in group can be by one or more group R¹Replace, wherein one or more non-adjacent CH₂Group can be by R¹C= CR¹、C≡C、Si(R¹)₂, C=O, C=S, C=NR¹, P (=O) (R¹)、SO、SO₂、NR¹, O, S or CONR¹Replace, and wherein one Individual or multiple H atom can be replaced by D, F, Cl, Br, I or CN, or has the monocyclic or multi-ring of 5～60 aromatic ring atom Aromatics or heteroaromatic ring system, described aromatics or heteroaromatic rings system in each case can be by one or more group R¹Replace, Or there is aryloxy group or the heteroaryloxy group of 5～60 aromatic ring atom, described aryloxy group or heteroaryloxy group can be by One or more group R¹Replace, or there is aralkyl or the heteroaralkyl group of 5～60 aromatic ring atom, described aralkyl Or heteroaralkyl group can be by one or more group R¹Replace, or there is the ammonia diaryl base of 10～40 aromatic ring atom Group, di (hetero) arylamino groups or aryl heteroaryl amino group, described diarylamino groups, di (hetero) arylamino groups Or aryl heteroaryl amino group can be by one or more group R¹Replace, two of which or more groups R can be with those This forms monocyclic or multi-ring aliphatic series, aromatics and/or benzo-fused ring system；

R¹Identical or be differently when occurring every time：H, D, F, or there is the aliphatic hydrocarbon group of 1～20 C atom, have 5～ The aromatics of 20 C atoms and/or heteroaromatic hydrocarbyl group, wherein one or more H atom can also be replaced by F；Two of which or More substituent R¹Monocyclic or multi-ring aliphatic series or aromatics ring system can also be formed each other；And

9. the luminescent device according to any one of claim 1～8,

The described constituent material of wherein said public hole transmission layer has electronic blocking property.

10. the luminescent device according to any one of claim 1～9,

The constituent material of wherein said first light emitting functional layer is made up of as main material low molecular weight material.

11. luminescent devices according to any one of claim 1～10,

The thickness of wherein said public hole transmission layer is 1nm or less.

12. luminescent devices according to any one of claim 1～11,

Described luminescent device also comprises：

3rd light-emitting component, described 3rd light-emitting component include third anode, described common cathode, be arranged on described third anode with The 3rd hole transmission layer between described common cathode and be arranged on described with the state contacting with described 3rd hole transmission layer The 3rd light emitting functional layer between 3rd hole transmission layer and described common cathode,

Wherein said public hole transmission layer is contacted with described 3rd light emitting functional layer, and

Described first light-emitting component, described second light-emitting component and described 3rd light-emitting component have luminous face different from each other Color.

13. luminescent devices according to claim 12,

The glow color of wherein said first light-emitting component is red, and the glow color of described second light-emitting component is blue, and The glow color of described 3rd light-emitting component is green.

14. electronic installations, described electronic installation includes the luminescent device according to any one of claim 1～13.