Semiconductor Energy Laboratory Co., Ltd.

Other

Sharp Kabushiki Kaisha Corporation

Satoshi Seo

Nobuharu Ohsawa

Shunpei Yamazaki

Tsunenori Suzuki

Hideko Inoue

Sachiko Kawakami

Satoko Shitagaki

Hiromi Seo

Harue Osaka

Takahiro Ishisone

Toshiki Sasaki

Ryoji Nomura

Tatsuyoshi Takahashi

Hiroshi Kadoma

Takahiro Ushikubo

Takeyoshi Watabe

Hisao Ikeda

Naoaki Hashimoto

Daisuke Kumaki

Hiroki Suzuki

Hiromi Nowatari

Kunihiko Suzuki

Hiroko Abe

Kaoru Hatano

Hiroko Nomura

Junichiro Sakata

Hiromitsu Kido

Yusuke Takita

Harue Nakashima

Yuji Iwaki

Yusuke Nonaka

Masakazu Egawa

Kaori Ogita

Hiroko Yamazaki

Tetsuo Tsutsui

Hideaki Kuwabara

Mitsuaki Osame

Takahiro Kawakami

Tomoya Aoyama

Keisuke Miyagawa

Yoshifumi Tanada

Aya Anzai

Tomohiro Kubota

Yasuo Nakamura

Takuya Kawata

Yoshiaki Oikawa

Takashi Hamada

Masakazu Murakami

Hajime Kimura

Takeshi Nishi

Shingo Eguchi

Jun Koyama

Teppei Oguni

Yoshiharu Hirakata

Yu Yamazaki

Masataka Nakada

Hironobu Shoji

Masahiro Takahashi

Daisuke Kubota

Daiki Nakamura

Ryo Hatsumi

Yohei Momma

Yasuhiko Takemura

Yasuyuki Arai

Masaaki Hiroki

Keitaro Imai

Nozomu Sugisawa

Teruaki Ochiai

Taisuke Kamada

Koichiro Tanaka

Masahiko Hayakawa

Akihiro Chida

Kohei Yokoyama

Takuya Hirohashi

Ryota Fukumoto

Mayumi Mikami

Hiroyuki Miyake

Kei Takahashi

Hideto Ohnuma

Koji Kusunoki

Yasuhiro Jinbo

Akio Yamashita

Mayumi Mizukami

Takeshi Noda

Masahiro Katayama

Takahiro Ibe

Noriko Shibata

Kiyoshi Kato

Akihisa Shimomura

Hideaki Shishido

Takuya Tsurume

Yoshitaka Yamamoto

Kazutaka Inukai

Minoru Takahashi

Mikio Yukawa

Ikuko Kawamata

Seiichi Mitsui

Manabu Niboshi

Kunio Hosoya

Tomoyuki Iwabuchi

Provided is a light-emitting element which has an anode, a light-emitting layer over the anode, an electron-transport layer over and in contact with the light-emitting layer, an electron-injection layer over and in contact with the electron-transport layer, and a cathode over and in contact with the electron-injection layer. The light-emitting layer has an electron-transport property, and the electron-transport layer includes an anthracene derivative. The light-emitting layer further includes a phosphorescent substance. This device structure allows the formation of a highly efficient blue-emissive light-emitting element even though the phosphorescent substance has higher triplet energy than the anthracene derivative which directly contacts with the light-emitting layer.

Light-emitting element, light-emitting device, display device, lighting device, and electronic device

A novel display panel is provided. The display panel includes a first light-emitting device, a second light-emitting device, and a partition wall. The first light-emitting device includes a first electrode, a second electrode, and a first layer sandwiched therebetween. The first layer contains a first organic compound and a first metal. The first organic compound includes an unshared electron pair. The first metal belongs to Group 5, Group 7, Group 9, Group 11, or Group 13. The second light-emitting device includes a third electrode, a fourth electrode, and a second layer sandwiched therebetween. The second layer contains the first organic compound and the first metal. A first space is provided between the second layer and the first layer. The partition wall has a first opening and a second opening. The partition wall overlaps with the first space between the first opening and the second opening.

Display panel with a reduced driving voltage without using an alkali metal

A light-emitting element having low driving voltage and high emission efficiency is provided. In the light-emitting element, a combination of a guest material and a host material forms an exciplex. The guest material is capable of converting triplet excitation energy into light emission. Light emission from the light-emitting layer includes light emission from the guest material and light emission from the exciplex. The percentage of the light emission from the exciplex to the light emission from the light-emitting layer is greater than 0 percent and less than or equal to 60 percent. The energy after subtracting the energy of light emission from the exciplex from the energy of light emission from the guest material is greater than 0 eV and less than or equal to 0.23 eV.

Light-emitting element, display device, electronic device, and lighting device

An object of one embodiment of the present invention is to provide a novel organic compound. The organic compound is a triarylamine derivative. The triarylamine derivative has an aryl group including a skeleton in which a naphthyl group is bonded to a naphthylene group. The other two aryl groups are each independently a phenyl group, a biphenyl group, or a terphenyl group. These groups may each have a substituent. As the substituent, an alkyl group having 1 to 6 carbon atoms or a cycloalkyl group having 3 to 6 carbon atoms can be selected.

Organic compound, light-emitting element, light-emitting device, electronic device, display device, and lighting device

Provided is a novel light adjustment program that can make a human feel at ease. Provided is the light adjustment program that includes the steps of obtaining basic data having 1/f fluctuation characteristics; generating first smoothed data and second smoothed data by performing moving average processing with different periods on the basic data having 1/f fluctuation characteristics; generating light adjustment data by subjecting the first smoothed data and the second smoothed data to arithmetic processing; and changing luminance of a light-emitting device in time series in accordance with the light adjustment data.

Light adjustment program, light-emitting apparatus, and lighting device

Provided is a light-emitting element including a fluorescence-emitting material with high emission efficiency. The light-emitting element includes a pair of electrodes and an EL layer between the pair of electrodes. The EL layer includes a first organic compound, a second organic compound, and a guest material. The first organic compound has a function of emitting a thermally activated delayed fluorescence at room temperature. The guest material has a function of emitting fluorescence. A HOMO level of the first organic compound higher than or equal to a HOMO level of the second organic compound. A LUMO level of the first organic compound is lower than or equal to a LUMO level of the second organic compound.

Light-emitting element and display device including TADF compound

A triarylamine derivative represented by a general formula (G1) given below is provided. Note that in the formula, Ar represents either a substituted or unsubstituted phenyl group or a substituted or unsubstituted biphenyl group; α represents a substituted or unsubstituted naphthyl group; β represents either hydrogen or a substituted or unsubstituted naphthyl group; n and m each independently represent 1 or 2; and Rto Reach independently represent any of hydrogen, an alkyl group having 1 to 6 carbon atoms, or a phenyl group.

Triarylamine derivative, light-emitting substance, light-emitting element, light-emitting device, and electronic device

A light-emitting element having high luminous efficiency is provided. The light-emitting element includes a first organic compound, a second organic compound, and a third organic compound. The first organic compound and the second organic compound, in combination, are capable of forming an exciplex. The first organic compound is a phosphorescent compound and the third organic compound is a fluorescent compound. Light emitted from the light-emitting element includes light emitted from the third organic compound to which excitation energy is supplied from the exciplex formed by the first organic compound and the second organic compound.

Objects of the present invention are to provide: a light-emitting element having a long lifetime and good emission efficiency and drive voltage. One embodiment of the invention is a light-emitting element including, between an anode and a cathode, at least a stack structure in which a first layer, a second layer, and a light-emitting layer are provided in order from the anode side. The first layer includes a first organic compound and an electron-accepting compound. The second layer includes a second organic compound having a HOMO level differing from the HOMO level of the first organic compound by from −0.2 eV to +0.2 eV. The light-emitting layer includes a third organic compound having a HOMO level differing from the HOMO level of the second organic compound by from −0.2 eV to +0.2 eV and a light-emitting substance having a hole-trapping property with respect to the third organic compound.

Light-emitting element, light-emitting device, electronic device, and lighting device

A novel light-emitting device that is highly convenient, useful, or reliable is provided. An organic compound in which a substituted or unsubstituted naphtho[2,3-c]carbazolyl group or a substituted or unsubstituted benzo[c]naphtho[2,3-g]carbazolyl group is bonded to a substituted or unsubstituted 9H-carbazolyl group or a substituted or unsubstituted anthryl group through a substituted or unsubstituted arylene group. The arylene group has 6 to 13, inclusive, carbon atoms.

Organic compound, light-emitting device, light-emitting apparatus, electronic device, display device, and lighting device

A light-emitting element with high luminous efficiency is provided. The light-emitting element contains a first organic compound and a second organic compound. The first and second organic compounds form an exciplex. The first organic compound emits no fluorescence but phosphorescence at a temperature ranging from low temperature to normal temperature. The luminescence quantum yield of the first organic compound is higher than or equal to 0% and lower than or equal to 40% at room temperature. Light emitted from the light-emitting element includes light emitted from an exciplex formed by the first organic compound and the second organic compound.

A novel organic compound is provided. A novel organic compound having a carrier-transport property is provided. A novel organic compound having a hole-transport property is provided. An organic compound having a low refractive index is provided. An organic compound having a low refractive index and a carrier-transport property is provided. An organic compound having a low refractive index and a hole-transport property is provided. An organic compound represented by the following general formula (G1) is provided.

Organic compound, light-emitting device, light-emitting apparatus, electronic equipment, lighting device, and electronic device

A novel organic compound is provided. That is, a novel organic compound that is effective in improving element characteristics and reliability is provided. The organic compound includes an anthracene skeleton and a carbazole skeleton, and is represented by the following general formula (G1). (In the formula, Ar represents a substituted or unsubstituted arylene group having 6 to 13 carbon atoms, and when the arylene group has substituents, the substituents may be bonded to each other to form a ring. Furthermore, Cz represents a substituted or unsubstituted carbazole skeleton. Furthermore, each of Rto Rand Rto Rindependently represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 6 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 13 carbon atoms. Furthermore, at least one of the following pairs may form a fused ring: Rand R; Rand R; Rand R; or Rand R.

Organic compound, light-emitting element, light-emitting device, electronic device, and lighting device

An organometallic complex having an emission peak in a long wavelength region (a visible region having a wavelength of 700 nm or greater or a near-infrared region) is provided. The organometallic complex has a structure represented by General Formula (G1), in which a ligand having a quinoxaline skeleton is coordinated to a central metal, and an electron-withdrawing group (e.g., fluorine, a cyano group, a trifluoromethyl group, a trifluoromethylsulfonyl group, or a pentafluorosulfanyl group) is included as a substituent at at least one substitutable position of the benzene ring of the quinoxaline skeleton of the ligand.

Organic compound, light-emitting device, light-emitting apparatus, electronic device, and lighting device

A novel organic compound with which the emission characteristics, emission efficiency, and reliability of a light-emitting element can be improved is provided. The organic compound has an imidazo[1,2-f]phenanthridine skeleton and a dibenzothiophene skeleton or a dibenzofuran skeleton bonded through an arylene group. The light-emitting element including the organic compound in a light-emitting layer shows high efficiency and low power consumption.

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Kanagawa, Japan

Satoshi Seo