Idemitsu Kosan Company, Limited

Universal Display Corporation

Mitsubishi Electric Corporation

Idemtisu Kosan Co., Ltd.

Kazuki Nishimura

Toshihiro Iwakuma

Chishio Hosokawa

Mitsunori Ito

Toshinari Ogiwara

Tetsuya Inoue

Kenichi Fukuoka

Masahiro Kawamura

Tomoki Kato

Kumiko Hibino

Masaki Numata

Yumiko Mizuki

Yoriyuki Takashima

Satomi Tasaki

Kei Yoshida

Nobuhiro Yabunouchi

Yuichiro Kawamura

Kiyoshi Ikeda

Tasuku Haketa

Masato Nakamura

Yuki Nakano

Hitoshi Kuma

Yukitoshi Jinde

Julia J Brown

Ryoji Maeda

Kumiko Gorai

Takayasu Sado

Hitoshi Yamamoto

Hiroaki Toyoshima

Michael Stewart Weaver

Mitsuru Eida

Emiko Kambe

Sayaka Mizutani

Tetsuya Masuda

Hiroyuki Saito

Tomoharu Hayama

Hiroaki Itoi

Masakazu Funahashi

Michael Stuart Weaver

Hirokatsu Ito

Hiroshi Yamamoto

Masatoshi Saito

Takushi Shiomi

Hideaki Nagashima

Jun Endo

Yusuke Takahashi

Yongguk Lee

Kengo Kishino

Taro Yamaki

Takashi Arakane

Brian D'Andrade

Toshio Sakai

Mitsuru Shibata

Keiji Okinaka

Toshiyuki Sawabe

Keiichi Yasukawa

Koki Takasaki

Yoshikazu Tanaka

Keitaro Yamada

Kimiko Hibino

An organic EL display device includes an anode and a cathode and includes a blue organic EL device, a green organic EL device, and a red organic EL device. The blue organic EL device includes a first emitting layer. The green organic EL device includes a second emitting layer. The red organic EL device includes a third emitting layer. The organic EL devices include a fourth emitting layer as a common layer. The fourth emitting layer is in direct contact with each of the emitting layers). The first emitting layer contains a compound represented by a formula (1) and having at least one group represented by a formula (11). The fourth emitting layer contains a second compound represented by a formula (2).

Organic EL display device, and electronic apparatus

An organic electroluminescence device includes an emitting region provided between a cathode and an anode, a first anode side organic layer, a second anode side organic layer, and a third anode side organic layer, in which the emitting region includes at least one emitting layer, the second anode side organic layer contains at least one compound different from the compound contained in the third anode side organic layer, the third anode side organic layer has a film thickness of 20 nm or more, and a difference NM−NMbetween a refractive index NMof a constituent material contained in the second anode side organic layer and a refractive index NMof a constituent material contained in the third anode side organic layer satisfies a relationship of a numerical formula (Numerical Formula N1) below,NM−NM≥0.05  (Numerical Formula N1).

Organic electroluminescent element, organic electroluminescent display device, and electronic device

Lens arrays of an image reading device in which lens bodies are arranged in a main scanning direction are connected with a gap therebetween. A plurality of first slit portions and a plurality of second slit portions are provided along the main scanning direction between the lens arrays and an image sensor. The first slit portion includes first light shielding plates that separate optical paths of light passed through the lens bodies. The second slit portion includes the first light shielding plates and a second light shielding plate that restricts an optical path of light passed through a lens body closest to the gap at a gap side. The position of the second light shielding plate in a direction along the optical path at the image sensor side is closer to the lens arrays than the first light shielding plates are.

Image reading device

An organic electroluminescence device including: at least a first pixel and a blue pixel apposed on a substrate, in which the first pixel and the blue pixel each have an anode and a cathode, and the first pixel and the blue pixel have a first emitting layer and a blue emitting layer, respectively; a hole transporting zone provided between the first emitting layer and the anode and between the blue emitting layer and the anode; and an electron transporting zone provided between the first emitting layer and the cathode and between the blue emitting layer and the cathode, in which the first emitting layer includes a delayed fluorescent second compound and a fluorescent first compound capable of emitting light ranging from 500 nm to 660 nm, and the electron transporting zone includes: a first common layer; and an additional layer provided between the first emitting layer and the cathode.

Organic electroluminescence element, display device, and electronic apparatus

An organic electroluminescence device comprising: a cathode; an anode; and an organic layer disposed between the cathode and the anode, wherein the organic layer includes an emitting layer and a first layer; the first layer is disposed between the cathode and the emitting layer; the emitting layer contains a compound represented by the following formula (A1); and the first layer contains a compound represented by the following formula (B1).

Organic electroluminescence device and electronic apparatus using the same

Provided are an organic electroluminescence device, which shows high luminous efficiency, is free of any pixel defect, and has a long lifetime, and a material for an organic electroluminescence device for realizing the device. The material for an organic electroluminescence device is a compound having a π-conjugated heteroacene skeleton crosslinked with a carbon atom, nitrogen atom, oxygen atom, or sulfur atom. The organic electroluminescence device has one or more 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 material for an organic electroluminescence device.

Material for organic electroluminescence device and organic electroluminescence device using the same

An organic electroluminescence device includes a first emitting unit, a first charge generating layer, a second emitting unit, a second charge generating layer, and a third emitting unit provided between an anode and a cathode in this order from the anode, in which the second charge generating layer includes an N layer close to the anode and a P layer close to the cathode, the third emitting layer contains a blue fluorescent compound, at least one of the first or second emitting layer contains a blue fluorescent compound, the third emitting unit includes a hole transporting zone between the second charge generating layer and the third emitting layer, the hole transporting zone is in contact with the second charge generating layer, and a thickness of the hole transporting zone is in a range from 5 nm to 40 nm and smaller than a thickness of the N layer.

Organic electroluminescent element and electronic device drivable at low voltage with improved lifetime

An organic electroluminescence device includes an anode, an emitting layer, and a cathode, in which the emitting layer contains a first compound and a second compound, the second compound satisfying (a), (b), (c), and (d) of: (a) a half bandwidth being 30 nm or less; (b) ionization potential being 6.0 eV or less; (c) a singlet energy S(M2) being 2.6 eV or more; and (d) a peak top in a toluene solution being 465 nm or less.

Organic electroluminescent element and electronic device

An organic electroluminescence device includes an anode, a cathode, a first emitting layer, and a second emitting layer disposed between the first emitting layer and the cathode, the first emitting layer containing a first host material in a form of a first compound represented by a formula (101) below, the second emitting layer containing a second host material in a form of a second compound represented by a formula (2) below, the first emitting layer and the second emitting layer being in direct contact with each other.

An organic electroluminescence device includes: an anode; a cathode; a first emitting layer, and a second emitting layer, in which the first emitting layer includes a first host material in a form of a first compound represented by a formula (1), the second emitting layer includes a second host material in a form of a second compound represented by a formula (2) and having at least one group represented by a formula (21), and the first emitting layer is in direct contact with the second emitting layer.

ABSTRACT An organic electroluminescence device includes an anode, a cathode, and at least one organic layer provided between the anode and the cathode, in which the at least one organic layer contains a first compound represented by a formula (1) and a second compound represented by a formula (2). In the formula (1), Ais a substituted or unsubstituted nitrogen-containing heterocyclic group having 5 to 24 ring atoms, and Lis a single bond, a substituted or unsubstituted divalent aryl group having 6 to 24 ring carbon atoms or a substituted or unsubstituted divalent heterocyclic group having 5 to 24 ring atoms. In the formula (2), Xis an oxygen atom or a sulfur atom. 

Organic electroluminescence element, electronic device, composition, material for organic electroluminescence element, and composition film

An organic electroluminescence device includes: an emitting region provided between a cathode and an anode; and a hole transporting zone provided between the anode and the emitting region, in which the hole transporting zone includes at least a first anode side organic layer and a second anode side organic layer, the first anode side organic layer is in direct contact with the second anode side organic layer, a total film thickness of the hole transporting zone is in a range from 20 nm to 80 nm, the first anode side organic layer contains no compound contained in the second anode side organic layer, the first anode side organic layer contains a first organic material and a second organic material, the first organic material is different from the second organic material, and a content of the first organic material in the first anode side organic layer is less than 50 mass %.

Organic electroluminescence device, light emitting device, organic electroluminescence display device and electronic device

An organic electroluminescence device includes two or more emitting units disposed between an anode and a cathode, and an intermediate layer, in which the intermediate layer contains a phenanthroline compound, the laminated emitting unit includes a first emitting layer containing a first host material and a second emitting layer containing a second host material, and a triplet energy T(H1) of the first host material and a triplet energy T(H2) of the second host material satisfy a relationship of a numerical formula (Numerical Formula 3),(1)&#x3e;(2)&#x2003;&#x2003;(Numerical Formula 3).

An organic electroluminescence device includes an anode, a cathode, a first emitting layer and a second emitting layer that are interposed between the anode and the cathode and are in a direct contact with each other, and a first electron transporting layer between the cathode and the first emitting layer and the second emitting layer being in a direct contact with each other. The first emitting layer contains a first compound represented by a formula (1) as a first host material, the first compound having at least one group represented by a formula (11). The second emitting layer contains a second compound represented by a formula (2) as a second host material. The first electron transporting layer contains a third compound represented by a formula (3). 

Organic electroluminescent device configured to emit light with high luminous efficiency

An organic electroluminescence device includes: a first emitting layer disposed between an anode and a cathode; a second emitting layer disposed between the first emitting layer and the cathode; and an electron blocking layer disposed between the first emitting layer and the anode, in which the first emitting layer and the second emitting layer are in direct contact with each other; the first emitting layer and the electron blocking layer are in direct contact with each other; the first emitting layer includes a first compound represented by a formula (1) below; the first compound includes at least one group represented by a formula (11) below; the second emitting layer includes a second compound represented by a formula (2); the electron blocking layer includes a third compound; and the third compound satisfies a formula (M1) below. 

Organic electroluminescent element emitting light at high luminous effiency and electronic device

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Kazuki Nishimura