Idemitsu Kosan Company, Limited

Masahide Matsuura

Chishio Hosokawa

Toshihiro Iwakuma

Kenichi Fukuoka

Masakazu Funahashi

Hidetsugu Ikeda

Hiroshi Yamamoto

Mitsuru Eida

Hiroshi Tokailin

Tadashi Kusumoto

Yuki Nakano

Hiroaki Nakamura

Masahiro Kawamura

Hisayuki Kawamura

Mineyuki Kubota

Keiko Yamamichi

Mitsunori Ito

Kiyoshi Ikeda

Hideaki Nagashima

Shigeru Matsuo

Hironori Kawakami

Hidetoshi Ono

Akinori Yomogita

Chisio Hosokawa

Hisahiro Higashi

Ryoji Maeda

Takeki Kofuji

Mitsuru-Idemitsu Kosan Co Ltd Eida

Chishio-Idemitsu Kosan Co Ltd Hosokawa

A material for organic electroluminescence devices comprising a compound having a specific structure and an organic electroluminescence device comprising an organic thin film layer which comprises one layer or a plurality of layers comprising at least a light emitting layer and disposed between a cathode and an anode, wherein at least one layer in the organic thin film layer comprises the material for organic electroluminescence devices, are provided. The material provides the organic electroluminescence device exhibiting a great efficiency of light emission, having no defect pixels, exhibiting excellent heat resistance and having a long life.

Material for organic electroluminescence device and electroluminescence device employing the same

An organic electroluminescence device having a layer of an organic light emitting medium which comprises (A) a specific arylamine compound and (B) at least one compound selected from specific anthracene derivatives, spirofluorene derivatives, compounds having condensed rings and metal complex compounds and is disposed between a pair of electrodes and an organic light emitting medium comprising the above components (A) and (B) are provided. The organic electroluminescence device exhibits a high purity of color, has excellent heat resistance and a long life and efficiently emits bluish to yellowish light. The organic light emitting medium can be advantageously used for the organic electroluminescence device.

Organic electroluminescence device and organic light emitting medium

Provided are a polymer compound, which comprises a copolymer containing at least a unit B, and a unit A and/or a unit C referring to repeating units A, B and C, and which has a weight-average molecular weight of from 50,000 to 1,500,000; a material for electronic devices and a material for organic electroluminescent devices comprising the compound; an organic electroluminescent device having an anode, a cathode and an organic thin film layer, wherein at least one organic thin film layer contains the polymer compound; a coating liquid containing the polymer compound and a solvent; and a method for producing an organic electroluminescent device using the coating liquid. Also provided is a polymer compound suitable to a coating method; a material for electronic devices and a material for organic electroluminescent devices comprising the compound; and an organic EL device, a coating liquid and a method for producing an organic EL device using the compound.

Polymer compound, material for electronic elements, material for organic electroluminescent elements, and organic electroluminescent element

Provided are a copolymer having plural repeating units each having a specific structure, and having a weight-average molecular weight of from 100,000 to 3,000,000; a material for organic electronic devices and a material for organic electroluminescent devices containing the copolymer; a solution containing the copolymer and a solvent; and an organic electroluminescent device using the material for organic electroluminescent devices. The copolymer has not only charge transporting properties but also solubility and is suitable for forming a film according to a coating method. The present invention provides the copolymer, and a material for organic electronic devices and a material for organic electroluminescent devices containing the copolymer, an organic electroluminescent device, and a solution containing the copolymer.

Copolymer, material for organic electronic element, material for organic electroluminescent element, and organic electroluminescent element

In an organic electroluminescence display device () comprising an organic EL element () having a structure wherein an organic luminescent medium () is sandwiched between a top electrode () and a bottom electrode (), and a driving circuit () for driving the organic EL element (), the organic luminescent medium () comprises a host compound and a triplet-related luminous compound and the driving circuit () applies a electric pulse voltage or pulse current having a frequency of 30 Hz or more and a duty ratio of 1/5 or less. In this way, it is possible to provide an organic EL display device which consumes a low electric power and has a long luminous life span, and a method for driving the same.

Organic electroluminescence display device and method for driving the same

An organic electroluminescence element comprising: an anode; a first emitting layer comprising at least a first host material and a first dopant; a second emitting layer comprising at least a second host material and a second dopant; and a cathode in the order mentioned: wherein the energy gap Eof the first host material, the energy gap Eof the first dopant, the energy gap Eof the second host material, and the energy gap Eof the second dopant satisfy the following formulas; and the luminescent intensity Iat the maximum luminescent wavelength of an emission spectrum derived from the first emitting layer, and the luminescent intensity Iat the maximum luminescent wavelength of an emission spectrum derived from the second emitting layer satisfy the following formula:E1&#x3e;E1E2&#x3e;E2E1&#x3e;E21&#x3e;3.5&#xd7;2.

Organic electroluminescence element

A specified indenopyrene compound containing a disubstituted amino group substituted with a group having a carbon number of from 1 to 40, which is a useful indenopyrene compound as an organic electronics material, and in particular, an indenopyrene compound which when used for organic thin film solar cells, displays a photoelectric conversion characteristic with high efficiency, is provided.

Indenopyrene compound, organic thin film solar cell material using the same, and organic thin film solar cell

An organic electroluminescence device comprising a compound having a specific structure having a heteroatom and an organic electroluminescence device which comprises a cathode, an anode and an organic thin film layer which comprises at least one layer comprising at least a light emitting layer and is disposed between the cathode and the anode, wherein at least one layer in the organic thin film layer comprises the above compound. The device provides excellent efficiency of light emission, forms no defects in pixels, exhibits excellent heat resistance and has a long life.

Material containing two or three dibenzofuran groups, dibenzothiophene groups, or a combination thereof, which is operable for organic electroluminescence elements, and organic electroluminescence elements using the material

An organic EL deviceincluding a plurality of emitting layers () and () between a cathode () and () and an anode (), each of the emitting layers () and () made of a host material having a triplet energy gap of 2.52 eV or more and 3.7 eV or less, and a dopant having a light emitting property related to a triplet state, the dopant containing a metal complex with a heavy metal.

Organic electroluminescent device

An organic electroluminescent device () including an anode (), a cathode (), and at least a first layer (), a second layer (), and a third layer () provided between the anode () and the cathode () in that order from the anode side. At least one of the first to third layers (), (), and () includes a phosphorescent compound. At least one of the first to third layers (), (), and () is an emitting layer. At least three compounds respectively forming the first layer (), the second layer (), and the third layer () other than the phosphorescent compound are compounds of the following formula (). wherein Rto Reach represent a hydrogen atom or a substituent, provided that adjacent substituents may form a ring.

Organic electroluminescence device

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Sodegaura, Japan

Masahide Matsuura