Idemitsu Kosan Company, Limited

Sony Corporation

Hisayuki Kawamura

Chishio Hosokawa

Hiroaki Nakamura

Toshihiro Iwakuma

Nobuhiro Yabunouchi

Hiroshi Yamamoto

Hidetsugu Ikeda

Toshio Sakai

Masakazu Funahashi

Kazuyoshi Inoue

Mitsunori Ito

Masahide Matsuura

Satoshi Hachiya

Takashi Arakane

Masahiro Kawamura

Hitoshi Kuma

Tadashi Kusumoto

Hisahiro Higashi

Hidetoshi Koga

Hiromasa Arai

Yasunori Kijima

Tetsuya Inoue

Tadahiko Yoshinaga

Shigeyuki Matsunami

Hironobu Morishita

Mineyuki Kubota

Hiroyuki Matsui

Koji Hirota

The present invention provides a novel aromatic amine derivative having a specific structure and an organic electroluminescence device in which an organic thin film layer comprising a single layer or plural layers including at least a light emitting layer is interposed between a cathode and an anode, wherein at least one layer in the above organic thin film layer, particularly a hole injecting layer contains the aromatic amine derivative described above in the form of a single component or a mixed component. Use of the aromatic amine derivative described above materialize an organic electroluminescence device which reduces an operating voltage and makes molecules less liable to be crystallized and which enhances a yield in producing the organic EL device and has a long lifetime.

Aromatic amine derivatives and organic electroluminescent device using same

Disclosed is an organic electroluminescence device in which an organic thin film which is composed of one or more layers including at least a light-emitting layer is interposed between a cathode and an anode. Since at least one layer of the organic thin film contains a novel aromatic amine derivative, which has an asymmetric structure wherein two different amine units are bonded through a linking group, by itself or as a component of a mixture, molecules are hardly crystallized, thereby improving the production yield of the organic electroluminescence device. This organic electroluminescence device has a long life.

Aromatic amine derivative and organic electroluminescent device using same

Provided are a novel aromatic amine derivative having an asymmetric structure and an organic electroluminescence device in which, an organic thin film layer comprising a single layer or plural layers including at least a light emitting layer is interposed between a cathode and an anode, at least one layer in the above organic thin film layer contains the aromatic amine derivative described above in the form of a single component or a mixed component, whereby molecules are less liable to be crystallized; a yield in producing the organic electroluminescence device is enhanced; and a lifetime is extended.

An imide derivative represented by the following formula (A): wherein Rand Rare each a hydrogen atom, a halogen atom, a cyano group, an alkyl group, a fluoroalkyl group or an aryl group; at least one of Rand Ris a fluoroalkyl group; and Rand Rare each a substituted or unsubstituted benzyl group, an aryl group, a heterocycle, a fluoroalkyl group or an imide group.

Imide derivative, material for organic electroluminescent device and organic electroluminescent device using the same

A sintered article is fabricated which contains one or more of indium oxide, zinc oxide, and tin oxide as a component thereof and contains any one or more types of metal out of hafnium oxide, tantalum oxide, lanthanide oxide, and bismuth oxide. A backing plate is attached to this sintered article to constitute a sputtering target. This sputtering target is used to fabricate a conductive film on a predetermined substrate by sputtering. This conductive film achieves a large work function while maintaining as much transparency as heretofore. This conductive film can be used to achieve an EL device or the like of improved hole injection efficiency.

Sputtering target, sintered article, conductive film fabricated by utilizing the same, organic EL device, and substrate for use therein

The present invention provides a novel aromatic amine derivative having a specific structure and an organic electroluminescence device in which an organic thin film layer comprising a single layer or plural layers including at least a light emitting layer is interposed between a cathode and an anode, wherein at least one layer in the above organic thin film layer, particularly a hole transporting layer contains the aromatic amine derivative described above in the form of a single component or a mixed component. Use of the aromatic amine derivative described above materialize an organic electroluminescence device which reduces an operating voltage and makes molecules less liable to be crystallized and which enhances a yield in producing the organic EL device and has a long lifetime.

An organic electroluminescent device including in sequence an anode, a first emitting layer (), a carrier barrier layer (), a second emitting layer () and a cathode stacked; wherein the ionization potential of the carrier barrier layer () is more than the ionization potential of the first emitting layer () by 0.1 eV or more and the affinity level of the carrier barrier layer () is less than the affinity levels of the first emitting layer () and the second emitting layer () by 0.1 eV or more.

Organic electroluminescent device with carrier blocking layer interposed between two emitting layers

A fluorene-based derivative having a specific structure and an organic electroluminescence device in which an organic thin film layer comprising a single layer or plural layers including at least a light emitting layer is sandwiched between a cathode and an anode, wherein at least one layer of the organic thin film layers described above comprises the above fluorene-based derivative having a specific structure in the form of a single component or a mixed component. The organic electroluminescence device has a high luminous efficiency, and the fluorene-based derivative materializes the same.

Fluorene-based derivative and organic electroluminescence device employing the same

An aromatic amine derivative having a specific structure having m-terphenyl group and an organic electroluminescence device comprising a cathode, an anode and an organic thin film layer which is disposed between the cathode and the anode and comprises at least one layer comprising at least a light emitting layer, wherein at least one layer in the organic thin film layer comprises the aromatic amine derivative singly or as a component of a mixture. The organic electroluminescence device has a long life.

Aromatic amine derivative and organic electroluminescent element employing the same

Provided is a material for an organic electroluminescence device, which is composed of a compound having a specific structure; and is capable of providing an organic electroluminescence device having a high luminous efficiency, excellent heat resistance, and a long lifetime while having no pixel defects, and an organic electroluminescence device using the same. The organic electroluminescence device comprises an organic thin film layer composed of one or more layers including at least a light-emitting layer and sandwiched between a cathode and an anode. In the organic electroluminescence device, at least one layer of the organic thin film layer comprises the material for an organic electroluminescence device.

Material for organic electroluminescent device and organic electroluminescent device using same

An organic electroluminescent device including at least an anode, a first emitting layer, a hole barrier layer, a second emitting layer and a cathode in this order. The first emitting layer and the second emitting layer both include a hole transporting material. The organic EL device is small in chromaticity change and has high efficiency.

Organic electroluminescent device and display having multiple emitting layers

Arylamine compounds having at least one spiro bond are provided to the layers of an electroluminescent device. The compounds act as hole transporting and luminescent host materials for both fluorescent and phosphorescent emission. Electroluminescent devices employing the arylamine compounds exhibit excellent luminous efficiency, heat resistance and device life.

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Sodegaura, Japan

Hisayuki Kawamura