Idemitsu Kosan Company, Limited

Sony Corporation

Universal Display Corporation

Joled Inc.

Idemitsu Petrochemical Co., Ltd.

Idemtisu Kosan Co., Ltd.

Tetsuya Inoue

Kazuki Nishimura

Mitsunori Ito

Nobuhiro Yabunouchi

Kumiko Hibino

Toshinari Ogiwara

Kiyoshi Ikeda

Kei Yoshida

Yumiko Mizuki

Tomoki Kato

Kumiko Gorai

Chishio Hosokawa

Toshihiro Iwakuma

Takayasu Sado

Mitsuru Eida

Masakazu Funahashi

Kenichi Fukuoka

Nobuhiko Ando

Hiroaki Nakagawa

Yoriyuki Takashima

Yukitoshi Jinde

Yutaka Tentaku

Yuuichi Suzuki

Fumiaki Nakano

Masahiro Kawamura

Julia J Brown

Makoto Ando

Kimihiro Saito

Michael Stewart Weaver

Yuichiro Kawamura

Noriaki Nishi

Hisayuki Kawamura

Tadahiko Yoshinaga

Masami Watanabe

Hitoshi Yamamoto

Takuji Okamoto

Noriyuki Tani

Kiyohiko Yokota

Takashi Kashiwamura

Masanori Sera

Toshiki Matsumoto

Fumio Moriwaki

Mitsugu Kanzawa

Kensaku Takahashi

Motohiro Takeshima

Hidehiro Matsunami

Kimiko Hibino

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

Aromatic amine derivative and elecroluminescence device using the same

Aromatic amine derivative and electroluminescence device using the same

A biscarbazole derivative having a specific group, which is represented by formula (1); and an organic electroluminescence device in which a plurality of organic thin-film layers including a light emitting layer are disposed between a cathode and an anode, and at least one of the organic thin-film layers include the biscarbazole derivative. The organic electroluminescence device exhibits high emission efficiency and has a long lifetime. In formula (1), each of Aand Aindependently represents a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms; each of Yto Yindependently represents C(R) or a nitrogen atom; each of R groups independently represents a hydrogen atom, etc.; and each of Land Lindependently represents a single bond, etc.; provided that at least one of A, Aand R represents a substituted or unsubstituted fluoranthenyl group, etc.

Biscarbazole derivative and organic electroluminescent element using same

The organic electroluminescence device includes an anode, a cathode, and at least an emitting layer between the anode and the cathode. The emitting layer includes a first host material, a second host material, and a phosphorescent dopant material. The first host material is a compound represented by a formula (1) below and the second host material is a compound represented by a formula (2) below. 

Organic electroluminescence element, and material for organic electroluminescence element

An organic EL multi-color emitting device including a substrate, and a first light-emitting element and a second light-emitting element arranged on the surface of the substrate; the first light-emitting element including, between an anode and a cathode, a first organic layer, a second organic layer and a third organic layer in this sequence in a direction perpendicular to the surface of the substrate; the second light-emitting element including, between an anode and a cathode, a second organic layer and a third organic layer in this sequence in a direction perpendicular to the surface of the substrate; the first organic layer including a first light-emitting dopant; the third organic layer including a second light-emitting dopant; the second organic layer including any of (A) a compound including an arylamine site, and a furan site or a thiophene site, (B) a compound including an arylamine site and a site comprising a nitrogen-containing six-membered ring structure, (C) a compound including a carbazole site, and a furan site or a thiophene site, and (D) a compound including a carbazole site and a site including a nitrogen-containing six-membered ring structure.

Organic EL multi-color light-emitting device

Provided are an organic electroluminescence device having high current efficiency and a long lifetime, and a biscarbazole derivative for realizing the device. The biscarbazole derivative has a specific substituent. The organic EL device has a plurality of organic thin-film layers including a light emitting layer between a cathode and an anode, and at least one layer of the organic thin-film layers contains the biscarbazole derivative.

Biscarbazole derivatives and organic electroluminescence device employing the same

A biscarbazole derivative of the invention is represented by a formula (1) below.  In the formula (1): Arepresents a substituted or unsubstituted nitrogen-containing heterocyclic group having 1 to 30 ring carbon atoms; Arepresents a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, or substituted or unsubstituted nitrogen-containing heterocyclic group having 1 to 30 ring carbon atoms; Xand Xeach are a linking group; Yto Yeach represent a substituent; p and q represent an integer of 1 to 4; and r and s represent an integer of 1 to 3.

Biscarbazole derivative, material for organic electroluminescence device and organic electroluminescence device using the same

A cross section of a luminous flux of returning light from a disc is split into a plurality of regions, and an operation is performed so that a weighting of a light amount of a region which has favorable symmetry in a radial direction and is formed on a circumference of an ellipse among the split regions is increased. Further, a lens shift detection signal is formed, and a lens shift detection signal is canceled from a push-pull signal.

Optical disc device

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

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

A biscarbazole derivative having a specific group, which is represented by formula (1): and an organic electroluminescence device in which a plurality of organic thin-film layers including a light emitting layer are disposed between a cathode and an anode, and at least one of the organic thin-film layers include the biscarbazole derivative. The organic electroluminescence device exhibits high emission efficiency and has a long lifetime. In formula (1), each of Aand Aindependently represents a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms; each of Yto Yindependently represents C(R) or a nitrogen atom; each of R groups independently represents a hydrogen atom, etc.; and each of Land Lindependently represents a single bond, etc.; provided that at least one of A, Aand R represents a substituted or unsubstituted fluoranthenyl group, etc.

An organic electroluminescence deviceincludes: an anodea cathodeopposed to the anodeand an emitting layerprovided between the anodeand the cathodeThe emitting layercontains first and second host materials and a luminescent material. The first host material has a partial structure represented by at least one of the following formulae (1) and (2) while the second host material has a partial structure represented by the following formula (3). Az represents a substituted or unsubstituted aromatic heterocyclic group containing a nitrogen-containing six-membered ring. Wis an aromatic hydrocarbon group substituted by at least one cyano group (CN) or an aromatic heterocyclic group substituted by at least one cyano group (CN). Aris a substituted or unsubstituted aromatic hydrocarbon group or a substituted or unsubstituted aromatic heterocyclic group, but is not an aromatic heterocyclic group containing a nitrogen-containing six-membered ring.&#x2014;Az&#x2014;(W)&#x2003;&#x2003;(1)&#x2014;Az&#x2014;(CN)&#x2003;&#x2003;(2)&#x2014;Ar&#x2014;(CN)&#x2003;&#x2003;(3)

Organic electroluminescence device

Growing community of inventors

Sodegaura, Japan

Tetsuya Inoue