JP3456873B2 - Organic electroluminescence device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to various display devices, light sources or backlights of display devices, or organic electroluminescence devices used as light emitting devices used in optical communication equipment.

[0002]

2. Description of the Related Art An electroluminescence element is a light emitting device utilizing the electroluminescence of a solid fluorescent substance. At present, an inorganic electroluminescence element using an inorganic material as a light emitter has been put into practical use, and it is used as a backlight of a liquid crystal display. Some applications are being developed for flat displays and the like. However, the voltage required to emit light from an inorganic electroluminescent device is 100V.
Since it is high as described above and it is difficult to emit blue light, it is difficult to realize full color by the three primary colors of RGB.

On the other hand, research on an electroluminescence device using an organic material has been attracting attention for a long time, and various studies have been conducted. However, since the luminous efficiency is very poor, a full-scale practical research progresses. I didn't.

However, in 1987, Kodak C.I.
W. Tang et al. Proposed an organic electroluminescence device having a function-separated laminated structure in which an organic material is divided into two layers, a hole transport layer and a light emitting layer, and 1000 cd / m ² or more despite a low voltage of 10 V or less. It was revealed that a high emission luminance of [C. W. Tan
g and S. A. Vanslyke: Appl. P
hys. Lett, 51 (1987) 913, etc.].
Since then, the organic electroluminescence device has been suddenly attracting attention, and even now, much research is being conducted on the organic electroluminescence device having a similar function-separated laminated structure.

Here, a conventional organic electroluminescent device will be described with reference to FIG.

FIG. 1 is a block diagram of a conventional organic electroluminescence device. In FIG. 1, 1 is a substrate, 2 is an anode, 3 is a hole transport layer, 4 is a light emitting layer, and 5 is a cathode.

As shown in FIG. 1, the conventional organic electroluminescence device is composed of a transparent or semi-transparent substrate 1 made of glass or the like and a transparent material such as ITO formed on the substrate 1 by a sputtering method or a resistance heating vapor deposition method. 2 made of a conductive film, and N, N'-diphenyl-N, N'-bis (3-methylphenyl) -1,1'-diphenyl-formed on the anode 2 by resistance heating vapor deposition or the like. A hole transport layer 3 made of 4,4′-diamine (hereinafter abbreviated as TPD) or the like, and an 8-Hydroxyquinoline Alum formed on the hole transport layer 3 by a resistance heating vapor deposition method or the like.
The light emitting layer 4 is made of inum (hereinafter abbreviated as Alq) or the like, and the cathode 5 is made of a metal film having a thickness of 100 nm to 300 nm formed on the light emitting layer 4 by a resistance heating vapor deposition method or the like. There is.

When a DC voltage or a DC current is applied with the anode 2 of the organic electroluminescence device having the above structure as a positive pole and the cathode 5 as a negative pole, a voltage is applied from the anode 2 to the light emitting layer 4 via the hole transport layer 3. Holes are injected and electrons are injected from the cathode 5 into the light emitting layer 4. Light emitting layer 4
In this case, recombination of holes and electrons occurs, and a luminescence phenomenon occurs when the excitons generated accompanying this transition from the excited state to the ground state. When Alq is used for the light emitting layer in the above structure,
A green emission is obtained. Further, theoretically, any luminescent color can be obtained by changing the molecular structure of the organic compound. Therefore, the organic electroluminescence device can be applied to full-color display, and is promising as a display device in the future with the advantage of low voltage driving. In the above structure, the organic compound layer has a laminated structure of a hole transport layer that transports holes and a light emitting layer. A structure, a structure including a light emitting layer and a hole transporting layer, a structure including a mixed layer of a light emitting layer and an electron transporting layer, and the like can be selected depending on constituent materials. There is also a method in which a part of the light emitting layer is doped with an organic compound having a high fluorescence quantum yield as a dopant, and emitted light is extracted from the dopant.
(Host-Guest System) In this case, the host material is used to smoothly move excitons to the dopant.
It is necessary for the excitons to move smoothly along with their own light emission. Therefore, it must be selected so that the emission spectrum of the host material and the excitation wavelength of the dopant are largely overlapped with each other and the dopant is more likely to be oxidized and reduced than the host material. In addition, there are cases where light is emitted without the energy transfer of excitons from the guest depending on the device configuration in consideration of the energy barrier. In that case, as the material used for the host material, the property of efficiently injecting and transporting holes or electrons into the dopant is selected. Therefore, the emitted light can be extracted by mixing the dopant into the hole transport layer or the electron transport layer having no light emitting region. It is possible to provide a highly efficient device by taking out multicolor from blue to red due to the emission of light by the dopant and extracting strong emission of the dopant. In addition, the materials used as dopants generally have strong concentration quenching and do not show clear fluorescence in the solid state, but many materials that emit strong light in a dilute solution are a few mol%.
The following concentrations are preferably used. Therefore, the film forming property is not required as much as the material used for the thin film, and there is an advantage that the range of material selection is widened.

[0009]

As described above, in the organic electroluminescence device, any luminescent color can be obtained by changing the molecular structure of the organic luminescent material used in the luminescent layer. Furthermore, various highly efficient light emitting devices based on host-guest systems have been proposed. However, the device characteristics lack sufficient brightness characteristics and durability at a level that can be put to practical use.

In view of the above problems, it is an object of the present invention to provide an organic electroluminescence device having high luminous efficiency and high stability.

[0011]

In order to solve the above-mentioned problems, the present invention provides an organic device having an anode for injecting at least holes, at least one organic compound layer, and a cathode for injecting electrons on a substrate. An organic electroluminescence element, wherein the organic compound layer contains any one or more of the organic compounds represented by the following general formula (Formula 1).

With this structure, the organic electroluminescence has a high luminous efficiency of the device and has a function of stably emitting light for a long time.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 is an organic electroluminescent device comprising an anode for injecting at least holes, a light emitting layer having a light emitting region, and a cathode for injecting electrons on a substrate. The light emitting layer has a structure in which one or more of the organic compounds represented by the general formula (Formula 1) of the present invention are mainly formed.

Hereinafter, the compound represented by the general formula (Formula 1) of the present invention will be described in detail. The benzene ring completed by Z1 and Z2 in the general formula (Formula 1) may have a substituent, and examples of the substituent include linear, branched or 1 to 8 carbon atoms, or Cyclic alkyl group, linear, branched or cyclic alkoxy group having 1 to 8 carbon atoms, aryl group having 6 to 12 carbon atoms, acyl group having 2 to 8 carbon atoms, 1 carbon atom Through 8
Alkylsulfonyl group, C6-12 aryloxy group, C1-8 sulfonamide group, C2-8 carbonamido group, C0-8 sulfamoyl group, carbon atom Carbamoyl group having 1 to 8 carbon atoms, carboxylic acid ester group having 2 to 8 carbon atoms, halogen atom (for example, F, Cl, B
r, I), a cyano group, a hydroxy group, a nitro group and the like.

Preferred as the alkyl group represented by R1, R2 and R3 is a straight chain having 1 to 8 carbon atoms,
It is a branched or cyclic alkyl group, which may further have a substituent, and examples of the substituent include a phenoxy group having 6 to 12 carbon atoms and optionally having a substituent. , An alkoxy group having 1 to 8 carbon atoms, an acyl group having 2 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, a halogen atom (F, Cl, Br, I), a hydroxy group and the like. .

The preferred aryl group represented by R1, R2 and R3 is a phenyl group having 6 to 12 carbon atoms or a substituted phenyl group, the substituent being an alkyl group having 1 to 8 carbon atoms. An alkoxy group having 1 to 8 carbon atoms, an acyl group having 2 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, a halogen atom (F, Cl, Br, I), a cyano group, a nitro group, or Examples thereof include a hydroxy group.

Particularly preferred as R1 is an unsubstituted alkyl group having 1 to 8 carbon atoms, particularly preferred as R2 is an unsubstituted alkyl group having 1 to 4 carbon atoms, and particularly preferred as R3 is phenyl. Base,
Or a substituted phenyl group (as a substituent, a chlorine atom, an alkyl group having 1 to 4 carbon atoms, a carbon atom having 1 to 4 carbon atoms)
Is an alkoxy group).

NR is a nitrogen atom substituted with a substituent R, and a preferred example of the alkyl group represented by R is an alkyl group having 1 to 8 carbon atoms, which further has a substituent. Also, as an example of the substituent, a phenyl group having 6 to 12 carbon atoms which may have a substituent, a phenoxy group having 6 to 12 carbon atoms which may have a substituent, C1-C8 alkoxy group, C2-C8 acyl group, C2-C8
Alkenyl groups, halogen atoms (F, Cl, Br, I)
Alternatively, a hydroxy group and the like can be mentioned.

Preferred examples of the aryl group represented by R are:
A phenyl group having 6 to 12 carbon atoms or a substituted phenyl group, the substituent being an alkoxy group having 1 to 8 carbon atoms, an acyl group having 2 to 8 carbon atoms, or an alkyl group having 1 to 8 carbon atoms Alkyl group, 2 carbon atoms
To 8 alkenyl groups, halogen atoms (F, Cl, B
r, I), a cyano group, a nitro group, a hydroxy group or the like. Particularly preferred as R has 1 carbon atom.
To 4 unsubstituted alkyl groups.

Particularly preferred as Y1 and Y2 are sulfur atoms. The compound represented by the general formula (Formula 1) is Bull
etin de la Societe Chimie
Belges, Vol. 57, pages 364-372 (1
948), its abstract, Chemical A
It can be synthesized by the method described in btracts magazine, Vol. 44, columns 60c to 61d (published in 1950). That is, for example, compound 1 is 5- (3-methyl-2)
H-benzothiazolilidene) -4,5-dihydro-3-
Methyl 2- (methylthio) -4-oxothiazolium 4
-Methylbenzenesulfonate and 1-indanone are obtained by condensing under basic conditions. At this time, as the base, for example, organic amines, basic heterocyclic compounds, metal amides, metal alkoxides, metal hydrides and the like are preferably used. The method for synthesizing the compound represented by the general formula (Formula 1) of the present invention is not limited to the above description.

Specific examples of the compound represented by the chemical formula (1) of the present invention are shown below (Chemical formula 2), (Chemical formula 3), (Chemical formula 4) and (Chemical formula 5). It is not limited to these.

[0022]

[Chemical 2]

[0023]

[Chemical 3]

[0024]

[Chemical 4]

[0025]

[Chemical 5]

The organic compound according to the present invention can be formed alone as an organic material layer, but when concentration quenching is strong, it is used as a mixed layer with another organic compound. Further, a laminated structure of the organic compound exemplified in the present invention and another organic compound, a laminated structure of a mixed layer, or a structure dispersed in a polymer can be used. In addition, a laminated structure or a mixed layer of the organic compound of the present invention and another organic material layer having an electron transporting property or a hole transporting property or a light emitting material having an electron transporting property or a hole transporting property and having a light emitting region, or those It can also be used in a structure dispersed in a polymer. The structure of the present invention is a structure of an organic electroluminescence device including an anode for injecting at least holes, at least one organic compound layer, and a cathode for injecting electrons on a substrate, and the organic compound layer is a light emitting region. When an organic electroluminescence device is composed of only the light emitting layer, the organic compound according to the present invention is contained in the light emitting layer and contributes to light emission. In addition, when the hole transporting property is insufficient in the light emitting layer, the hole transporting layer is used as an IT.
It is also possible to select a laminated structure in which the electron transport layer is provided between the cathode and the cathode, or when the electron transport property is insufficient. In that case, the organic compound according to the present invention can be mixed in the hole transport layer and the electron transport layer. Further, a structure in which a material having a hole / electron transporting property is mixed in the light emitting layer can be selected. Also in that case, the organic compound according to the present invention can be mixed. Generally, an organic electroluminescence device has a laminated structure in which each layer has a function from the viewpoint of efficiently injecting holes and electrons and recombining them. The materials used for each layer are shown below. As the hole transport material, aromatic diamine compounds such as N, N'-diphenyl-N, N'-bis (3-methylphenyl) -1,1'-diphenyl-4,4'-diamine (TPD) are generally used. However, it is used as another one.
No. 1, JP-A-4-255692, and JP-A-4-255692.
132189, porphyrin compounds such as porphyrin, tetraphenylporphin copper, phthalocyanine, copper phthalocyanine, titanium phthalocyanine oxide, and 1,1-bis {4- (di-P
-Tolylamino) phenyl} cyclohexane, 4,
4 ′, 4 ″ -trimethyltriphenylamine, N,
N, N'N'-tetrakis (P-tolyl) -P-phenylenediamine, 1- (N, N-di-P-tolylamino)
Naphthalene, 4,4'-bis (dimethylamino) -2-
2'-dimethyltriphenylmethane, N, N, N ',
N'-tetraphenyl-4,4'-diaminobiphenyl, N, N ', diphenyl-N, N'-di-m-tolyl-4, N, N', diphenyl-N, N'-bis (3- Methylphenyl) -1, 1'-4, 4'-diamine, 4 '
-Aromatic tertiary amines such as diaminobiphenyl and N-phenylcarbazole, 4-di-P-tolylaminostilbene, 4- (di-P-tolylamino) -4 '-[4-di-
P-tolylamino) styryl] stilbene and other stilbene compounds, triazole derivatives, oxadiazole derivatives, imidazole derivatives, polyarylalkane derivatives, pyrazoline derivatives, pyrazolone derivatives, phenylenediamine derivatives, annealamine derivatives, amino-substituted chalcone derivatives, oxazole derivatives, Styrylanthracene derivative, fluorenone derivative, hydrazone derivative,
Examples thereof include silazane derivatives, polysilane-based aniline-based copolymers, polymer oligomers, styrylamine compounds, aromatic dimethylidin-based compounds, and poly-3-methylthiophene. It can also be used as a polymer dispersion system in which it is dispersed in a polymer such as polycarbonate. In addition, the organic compound of the present invention can form a light emitting layer by a guest-host system by a fluorescent organic material and a doping method. As an example of using the organic compound of the present invention as a dopant as a mixed layer as a part of a light emitting layer, Al
A light emitting material having an electron transporting property such as q is used. Al
q has an excellent film-forming property and an electron-transporting property, and can be used as a light-emitting layer, can be inserted as an electron-transporting layer between the light-emitting layer and the cathode, or can form a light-emitting layer and a mixed layer. Many of the materials used as the light emitting material of the organic electroluminescence device have an electron transporting property and can be combined with the organic compound of the present invention as an electron transporting layer or a mixed layer. That is, as described in JP-A-4-255692, benzothiazole-based, benzimidazole-based, benzoxazole-based optical brighteners, metal chelated oxinoid compounds, styrylbenzene-based compounds and the like can be mentioned. . As a typical example,
2,5-bis (5,7-di-t-pentyl-2-benzoxazolyl) -1,3,4-thiadiazole, 4,
4'-bis (5,7-benzil-2-benzoxazolyl) stilbene, 4,4'bis [5,7-di- (2-methyl-2-butyl) -2-benzoxazolyl] stilbene 2,5-bis (5,7, di-t-benzyl-2-
Benzoxazolyl) thiophene, 2,5-bis ([5
-Α, α-dimethylbenzyl] -2-benzoxazolyl) thiophene, 2,5-bis [5,7-di- (2-methyl-2-butyl) -2-benzoxazolyl] -3,
4-diphenylthiophene, 2,5, -bis (5-methyl-2-benzoxazolyl) thiophene, 4,4'-
Bis (2-benzoxazolyl) biphenyl, 5-methyl-2- [2- [4- (5-methyl-2-benzoxazolyl) phenyl] vinyl] benzoxazolyl, 2- [2- ( Benzoxazoles such as 4-chlorophenyl) vinyl] naphtho [1,2-d] oxazole, benzothiazoles such as benzothiazole such as 2,2 '-(P-phenylenedivinylene) -bisbenzothiazole, 2- [ 2- [4- (2-benzimidazolyl) phenyl] vinyl] benzimidazole, 2- [2
Examples include optical brighteners such as benzimidazole-based compounds such as-(4-carboxyphenyl) vinyl] benzimidazole. Examples of the metal chelated oxinoid include tris (8-quinolinol) aluminum, bis (8-quinolinol) magnesium, bis (benzo [f] -8-quinolinol) zinc, bis (2-methyl-).
8-quinolinolate) aluminum oxide, tris (8-quinolinol) indium, tris (5-methyl-8-quinolinol) aluminum, 8-quinolinol lithium, tris (5-chloro-8-quinolinol) gallium, bis (5-chloro- 8-quinolinol) calcium, poly [zinc (II) -bis (8-hydroxy-5)
-Quinolinonyl) methane] and other 8-hydroxyquinoline-based metal complexes, dilithium epindridione, and the like. Examples of the styrylbenzene compound include 1,4-bis (2-methylstyryl) benzene, 1,4- (3-methylstyryl) benzene, 1,4-bis- (2-methylstyryl) benzene, 1,4- (3-methylstyryl)
Benzene, 1,4-bis (4-methylstyryl) benzene, distyrylbenzene, 1,4-bis (2-ethylstyryl) benzene, 1,4-bis (3-ethylstyryl) benzene, 1,4-bis (2-methylstyryl)-
2-methylbenzene and the like can be mentioned. Further, a distilpyrazine derivative is also used, and typical examples thereof include 2,5
-Bis (4-methylstyryl) pyrazine, 2,5-bis (4-ethylstyryl) pyrazine, 2,5-bis [2-
(1-Naphthyl) vinyl] pyrazine, 2,5-bis (4
-Methoxystyryl) pyrazine, 2,5-bis [2-
Examples include (4-biphenyl) vinyl] pyrazine and 2,5-bis [2- (1-pyrenyl) vinyl] pyrazine. Furthermore, naphthalimide derivatives, perylene derivatives,
Oxadiazole derivative, aldazine derivative, cyclopentadiene derivative, styrylamine derivative, coumarin derivative, aromatic dimethylidin derivative, and further anthracene, salicylate, pyrene, coronene as described in JP-A-4-132189. And so on. A metal or alloy having a low work function is used as the cathode material, and Al, In, Mg, Ti,
Mg / Ag alloy, Al-Li alloy, etc. are used. Further, a sealing film for blocking the influence of oxygen and moisture in the atmosphere may be provided on the cathode by vapor deposition, sputtering, or a coating method. As its material, SiO, SiO
² , inorganic oxides such as Al ² O ³ , thermosetting and photocurable resins, and silane-based polymer materials having a sealing effect.

Next, the organic electroluminescent device of the present invention will be specifically described with reference to examples.

[0028]

【Example】

Example 1 An ITO substrate (made by Asahi Glass Co., Ltd., which was subjected to ultrasonic cleaning in acetone for 5 minutes and dried by dry compressed air)
Exemplified compound (5) according to the present invention on a sheet resistance of 15Ω)
Was evaporated from a heating board in vacuum (3 × 10 −6 torr) to deposit 100 nm on the substrate. When taken out after the deposition and observed, the deposited film was formed uniformly and densely. After that, it was left in the atmosphere (20 ° C, 40%).
When the surface was observed after 0 day, changes such as crystallization did not appear, and a uniform state was maintained. No clear fluorescence was observed in the thin film state.

Example 2 The exemplified compound (5) according to the present invention was dissolved in chloroform and 2 × 10 ^-5 mol% /
l of dilute solution was made. The solution was set in a fluorescence spectrophotometer (LS-50B manufactured by Perkin Elmer Co., Ltd.) and the fluorescence characteristics were measured. The results are shown in (Table 1).

[0030]

[Table 1]

When the vapor deposition substrate is set in an ionization potential measuring device (AC-1 manufactured by Riken Keiki Co., Ltd.) and measured, the ionization potential of the vapor deposition film of Exemplified Compound (5) is 4.
It was 98 eV.

Example 3 An organic electroluminescence device was prepared by using the exemplified compound (5) of the present invention as a dopant in a light emitting layer. TPD (manufactured by Trichemical Laboratories) on ITO (manufactured by Asahi Glass Co., Ltd., sheet resistance: 15Ω) that has been thoroughly washed is 0.1 to 0.2 nm from a tantalum board.
50 nm was deposited at a deposition rate of / sec. On top of that, Alq (manufactured by Trichemical Laboratories) at the same time as Exemplified Compound (5)
Was co-evaporated. Exemplified compound (5) was applied from a tantalum board at 0.01 to 0.05 nm / sec, and at the same time A
lq at 20 n at a deposition rate of 0.5 to 2.5 nm / sec
m was vapor-deposited. As for the ratio of the vapor deposition rates, the exemplified compound (5) was Alq.
It adjusted so that it might become 0.5-5.0 mol% in it.
Further, Alq is further continued on the co-deposited layer by 550n.
m was vapor-deposited. Further, Al-Li (manufactured by Kojundo Chemical Co., Ltd.) is formed on the organic compound layer to form an Al-Li alloy having a Li concentration of 15 at% with a film thickness of 200 nm from a tungsten board at a deposition rate of 0.5 nm / sec. , Completed the organic electroluminescence device.

(Comparative Example) TPD (manufactured by Tri-Chemical Laboratories) on ITO (manufactured by Asahi Glass Co., Ltd., sheet resistance: 15Ω) that has been thoroughly washed is used for 0.1 to 0.2 n from a tantalum board.
50nm vapor deposition at the vapor deposition rate of m / sec and Al on it
q (manufactured by Trichemical Laboratories) is deposited on a tantalum board at a deposition rate of 0.1 to 0.2 nm / sec to a thickness of 75 nm, and Al-Li (manufactured by Kojundo Chemical Co., Ltd.) is deposited on the organic compound layer as Li. Al-Li alloy having a concentration of 15 at% was formed with a film thickness of 200 nm from a tungsten board at a vapor deposition rate of 0.5 nm / sec to complete an organic electroluminescence device.

The emission spectra of the completed device of Example of the present invention (exemplified compound (5) contained in the co-deposited layer in an amount of 1.0 mol%) and the device of Comparative Example are L by Perkin Elmer.
It was measured by S-50B. As for the luminescent color, uniform green luminescence was obtained in both cases, but the device according to this example had a narrower half-value width and sharp spectral characteristics. The results are shown in (Table 2).

[0035]

[Table 2]

Further, in order to compare the luminance characteristics of the elements, the elements were experimentally manufactured by the methods shown in the examples and comparative examples, and the luminance characteristics were measured. The devices according to the examples were manufactured by changing the concentration of the exemplary compound (5) as a dopant. The brightness was measured with a BM-8 luminescent meter manufactured by Topcon Corp., and each characteristic of voltage, brightness and current of the device was measured. As the power source, a source measure unit 236 manufactured by Keithley Co. was used. The results are shown in (Table 3).

[0037]

[Table 3]

From the results of the examples, good results were shown when the concentration of the dopant was 5 mol% or less, and particularly preferable results were obtained when the concentration was as low as 1 mol% or less. From the above results, the presence of the organic compound according to the present invention in the light emitting layer makes it possible to provide a highly efficient organic electroluminescence device.

Further, the device was connected to a constant current power supply (Source Measure Unit 236 manufactured by Keithley), and a continuous drive test of the device was conducted. The device produced in the comparative example was driven at a constant current drive of 10.5 mA / cm ² with an initial luminance of 500 cd / m ² and an initial drive voltage of 10.3 V under drive conditions. When a continuous drive test was performed, the device halved after 90 hours of continuous drive.

Then, the device according to Example 1 (exemplified compound (5) 0.5 mol% doped) was driven for 6.8 m.
It was driven at a constant current of A / cm ² with an initial luminance of 500 cd / m ² and an initial driving voltage of 8.7V. When a continuous drive test was performed, the element was halved after 343 hours of continuous drive. From this result, the organic compound according to the present invention can be provided in the light emitting layer to provide an organic electroluminescence device having excellent stability.

[0041]

As described above, by using the organic compound according to the present invention, it is possible to provide a stable organic electroluminescence device having high luminous efficiency.

[Brief description of drawings]

FIG. 1 is a block diagram of a conventional organic ectoluminescence device.

[Explanation of symbols]

1 substrate 2 anode 3 Hole transport layer 4 Light emitting layer 5 cathode

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akira Gyoutoku 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Takahiro Komatsu 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. (72) Inventor Yoshio Inagaki 2-26-30 Nishiazabu, Minato-ku, Tokyo Fuji Photo Film Co., Ltd. (72) Inventor Tadahiro Soro 2-26-30 Nishiazabu, Minato-ku, Tokyo Fuji Photo Film Co., Ltd. (56) Reference JP-A-8-220757 (JP, A) JP-A-8-129257 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H05B 33/14 C09K 11 / 06 CA (STN) REGISTRY (STN)

Claims (4)

(57) [Claims] 1. An organic electroluminescence device comprising an anode for injecting holes, at least one organic compound layer, and a cathode for injecting electrons on a substrate, wherein the organic compound layer has the following general formula: (Chemical formula 1) [Chemical formula 1] An organic electroluminescent device comprising any one or more of the organic compounds represented by. 2. The organic compound layer, which has a light emitting layer having a light emitting region, and contains at least one or more of the organic compounds represented by the following general formula (Formula 1). Electroluminescent device. 3. The organic electroluminescence device according to claim 1, wherein the light emitting layer is made of at least two kinds of organic compounds, and at least one kind is formed of the organic compounds. 4. The light emitting layer is formed of a laminate or a mixed layer of the organic compound layer and another organic material layer having a light emitting region having an electron transporting property or a hole transporting property. The organic electroluminescent element according to claim 1.