Idemitsu Kosan Company, Limited

Yusuke Takahashi

Tasuku Haketa

Hirokatsu Ito

Yu Kudo

Shota Tanaka

Kazuki Nishimura

Masato Nakamura

Emiko Kambe

Tetsuya Masuda

Hiroaki Itoi

Hiroaki Toyoshima

Keitaro Yamada

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

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.

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

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. 

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 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.

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 N*, Ar, *a, 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.

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Sodegaura, Japan

Yusuke Takahashi