Idemitsu Kosan Company, Limited

Tasuku Haketa

Hirokatsu Ito

Masahiro Kawamura

Yumiko Mizuki

Yu Kudo

Tomoharu Hayama

Yusuke Takahashi

Kazuki Nishimura

Ryota Takahashi

Masato Nakamura

Ryoji Maeda

Shota Tanaka

Yuki Nakano

Annemarie Wolleb

Yuichi Nishimae

Yoichi Ikeda

Tomoki Kato

Heinz Wolleb

Satomi Tasaki

Emiko Kambe

Takushi Shiomi

Tetsuya Masuda

Hideaki Nagashima

Mitsuru Shibata

Hiroaki Itoi

Hiroaki Toyoshima

Michelle Groarke

Keitaro Yamada

A compound that is capable of achieving an organic EL device that has a high external quantum efficiency and a long lifetime is to be provided, and a compound represented by the following formula (1) is used (wherein in the formula, Rto R, Rto R, Rto R, Rto R, Rto R, Rto R, and Lare defined in the description).

Compound and organic electroluminescent element using same

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

An organic electroluminescence device having an improved performance and a compound represented by formula (1), which is a novel material that enables the organic electroluminescence device:

Compound, material for organic electroluminescence device, organic electroluminescence device, and electronic device

The present invention relates to a compound represented by the formula (1): wherein Rto Rand Lto Lare those defined in the specification, and Ar is the following formula (A) or (B): wherein Rto Rand Rto Rare those defined in the specification, and Ar is one defined in the specification.

Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic device

Provided are a compound capable of more improving the performance of organic EL devices, an organic electroluminescent device having a more improved device performance, and an electronic device including such an organic electroluminescent device; precisely, a compound represented by the following formula (1) wherein X, X, X, L, Rto R, Rto R, Rto R, Rto R, Rto R, and Rto Rare as defined in the description, an organic electroluminescent device containing the compound, and an electronic device including such an organic electroluminescent device.

A compound represented by the following formula (1): The Rto R, Lto L, and Arto Arin the formula (1) are as defined in the description. An organic electroluminescence device contains the compound, and an electronic instrument includes the organic electroluminescence device.

Compound, material for organic electroluminescent element, organic electroluminescent element, and electronic device

Compound having naphthobenzofuranyl structure, material for organic electroluminescence device, organic electroluminescence device, and electronic instrument

Compound having dibenzofuran and naphthalene structures, and organic electroluminescent element using same

Specifically substituted benzofuro- and benzothienoquinolines and their use in electronic devices, especially electroluminescent devices. When used as charge transport material, charge blocker material and/or host material in electroluminescent devices, the specifically substituted benzofuro- and benzothienoquinolines may provide improved efficiency, stability, manufacturability, or spectral characteristics of electroluminescent devices and reduced driving voltage of electroluminescent devices.

Specifically substituted benzofuro- and benzothienoquinolines for organic light emitting diodes

A compound represented by the following formula (1) wherein the symbols are as defined in the description, and an organic electroluminescent device containing the compound. 

A compound represented by formula (A): wherein Ar, Rto R, Rto R, Rto R, Rto R, *1, and Rto Rare as defined in the description provides organic electroluminescence devices with improved device performance.

Compound, material for organic electroluminescence devices, organic electroluminescence device, and electronic device

An organic electroluminescence device having an improved performance and a compound represented by formula (1), which is a novel material that enables the organic electroluminescence device:  wherein, X, Arto Ar, Rto R, *a, and *b are the same as those defined in the specification.

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

A novel compound represented by formula (1): wherein Rto R, Rto R, Lto L, a to c, n, and Ar are as defined in the description,provides an organic electroluminescence device having a device lifetime further improved.

Growing community of inventors

Chiba, Japan

Tasuku Haketa