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公开(公告)号：US10199436B2
公开(公告)日：2019-02-05
申请号：US15900021
申请日：2018-02-20
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Satoshi Seo , Toshiki Sasaki , Ryohei Yamaoka
Abstract: Provided is a light-emitting device that can display an image with a wide color gamut or a novel light-emitting element. The light-emitting device includes a plurality of light-emitting elements each of which includes an EL layer between a pair of electrodes. Light obtained from a first light-emitting element through a first color filter has, on chromaticity coordinates (x, y), a chromaticity x of greater than 0.680 and less than or equal to 0.720 and a chromaticity y of greater than or equal to 0.260 and less than or equal to 0.320. Light obtained from a second light-emitting element through a second color filter has, on chromaticity coordinates (x, y), a chromaticity x of greater than or equal to 0.130 and less than or equal to 0.250 and a chromaticity y of greater than 0.710 and less than or equal to 0.810. Light obtained from a third light-emitting element through a third color filter has, on chromaticity coordinates (x, y), a chromaticity x of greater than or equal to 0.120 and less than or equal to 0.170 and a chromaticity y of greater than or equal to 0.020 and less than 0.060.
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公开(公告)号：US20190036041A1
公开(公告)日：2019-01-31
申请号：US16136590
申请日：2018-09-20
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Hideko Inoue , Tomoya Yamaguchi , Satoshi Seo , Yui Yamada
Abstract: A high-purity organometallic iridium complex is provided. The organometallic iridium complex includes iridium and a plurality of ligands cyclometallated to the iridium. Each of the plurality of ligands includes a heteroaromatic ring having a coordinatable nitrogen atom. In LC analysis of the organometallic iridium complex, an impurity which has a monochlorinated ligand among the plurality of ligands is 0.1% or less by quantitating using peak area count with a PDA detector.
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公开(公告)号：US10193086B2
公开(公告)日：2019-01-29
申请号：US15890899
申请日：2018-02-07
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Hideko Inoue , Miki Kanamoto , Hiromi Seo , Satoshi Seo , Tatsuyoshi Takahashi , Tomoka Nakagawa
IPC: H01L51/54 , C09K11/06 , H01L51/00 , C07D491/048 , H01L51/50
Abstract: A light-emitting element having high emission efficiency is provided. A light-emitting element having a low driving voltage is provided. A novel compound which can be used for a transport layer or as a host material or a light-emitting material of a light-emitting element is provided. A novel compound with a benzofuropyrimidine skeleton is provided. Also provided is a light-emitting element which includes the compound with the benzofuropyrimidine skeleton between a pair of electrodes.
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公开(公告)号：US10164203B2
公开(公告)日：2018-12-25
申请号：US15910374
申请日：2018-03-02
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Satoshi Seo , Toshiki Sasaki , Ryohei Yamaoka
Abstract: A novel light-emitting element is provided. A light-emitting element that emits red light with high color purity and has high emission efficiency is provided. A full-color light-emitting device having low power consumption is provided. In the light-emitting element that exhibits white light emission, the emission wavelength range of red light is a specific range on the longer wavelength side than the conventional emission wavelength range of red light that is usually used, and an optical element having a specific transmittance in the specific wavelength range is used.
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公开(公告)号：US10164201B2
公开(公告)日：2018-12-25
申请号：US15584830
申请日：2017-05-02
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Satoshi Seo
Abstract: Provided is a light-emitting element with high external quantum efficiency and a low drive voltage. The light-emitting element includes a light-emitting layer which contains a phosphorescent compound and a material exhibiting thermally activated delayed fluorescence between a pair of electrodes, wherein a peak of a fluorescence spectrum and/or a peak of a phosphorescence spectrum of the material exhibiting thermally activated delayed fluorescence overlap(s) with a lowest-energy-side absorption band in an absorption spectrum of the phosphorescent compound, and wherein the phosphorescent compound exhibits phosphorescence in the light-emitting layer by voltage application between the pair of electrodes.
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Patent Agency Ranking
公开(公告)号：US20180366676A1
公开(公告)日：2018-12-20
申请号：US16113128
申请日：2018-08-27
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Satoshi Seo , Takahiro Ishisone
CPC classification number: H01L51/504 , H01L51/006 , H01L51/0067 , H01L51/0072 , H01L51/0074 , H01L2251/5384 , H01L2251/55
Abstract: A light-emitting element with high emission efficiency which includes fluorescent materials is provided. The light-emitting element includes a first light-emitting layer and a second light-emitting layer. The first light-emitting layer includes a first fluorescent material and a first host material, and the second light-emitting layer includes a second fluorescent material and a second host material. The second host material includes a first organic compound and a second organic compound. The first organic compound and the second organic compound form an exciplex. A singlet excited energy level of the first host material is higher than a singlet excited energy level of the first fluorescent material, and a triplet excited energy level of the first host material is lower than a triplet excited energy level of the first fluorescent material.
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公开(公告)号：US10121969B2
公开(公告)日：2018-11-06
申请号：US15174383
申请日：2016-06-06
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Shunpei Yamazaki , Satoshi Seo , Tsunenori Suzuki
Abstract: A light-emitting element and its fabrication method are provided. The light-emitting element includes an EL layer between a pair of electrode, and the EL layer is formed by evaporation of an organic compound. The evaporation is conducted so that the partial pressure of a component with a specific molecular weight in a film-formation chamber, which is monitored by a mass spectrometer, does not exceed a specific value during the evaporation. This method allows the formation of a light-emitting element having an improved lifetime.
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公开(公告)号：US10103341B2
公开(公告)日：2018-10-16
申请号：US14678467
申请日：2015-04-03
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Hideko Inoue , Satoshi Seo , Nobuharu Ohsawa
Abstract: An organometallic complex having a structure represented by the following general formula (G1) is provided. (In the formula, A represents an aromatic hydrocarbon group having 6 to 25 carbon atoms. Further, Z represents any one of hydrogen, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, or an aryl group having 6 to 25 carbon atoms. In addition, Ar1 represents an aryl group having 6 to 25 carbon atoms. R1 represents any one of hydrogen, an alkyl group having 1 to 4 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms. Further, M is a central metal and represents an element belonging to Group 9 or Group 10.)
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公开(公告)号：US10074822B2
公开(公告)日：2018-09-11
申请号：US14922636
申请日：2015-10-26
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Satoshi Seo , Tsunenori Suzuki , Takeyoshi Watabe , Kunihiko Suzuki , Toshiki Hamada , Rina Nakamura , Hayato Yamawaki , Ayumi Sato , Harue Osaka
CPC classification number: H01L51/5092 , H01L51/0025 , H01L51/0054 , H01L51/0058 , H01L51/006 , H01L51/0061 , H01L51/0072 , H01L51/0074 , H01L51/0085 , H01L51/5072
Abstract: To provide a novel light-emitting element or a highly reliable light-emitting element. To provide a light-emitting device, a display device, an electronic device, and a lighting device each of which can be manufactured at a low cost. To provide a light-emitting element including an anode, a cathode, and an EL layer between the anode and the cathode. The EL layer includes a light-emitting layer and an electron injection transport layer between the light-emitting layer and the cathode, and the amount of a halogen detected from a material forming the electron injection transport layer is less than or equal to 30 ppm.
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90.发明申请公开(公告)号：US20180182992A1
公开(公告)日：2018-06-28
申请号：US15854276
申请日：2017-12-26
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Satoshi Seo , Shunsuke Hosoumi , Shunpei Yamazaki
CPC classification number: H01L51/52 , H01L27/3213 , H01L27/323 , H01L27/3232 , H01L27/3267 , H01L27/3276 , H01L51/0031 , H01L51/50 , H01L51/5246 , H01L51/5275 , H01L2251/5338 , H01L2251/5361
Abstract: A highly reliable light-emitting element that shows a novel degradation curve when driven is provided. The degradation curve of a light-emitting element with a long lifetime is represented by a function composed of two exponential functions, which is a linear combination of an exponential function expressing an initial degradation component and an exponential function expressing a long-term degradation component. The initial degradation component is represented by a stretched exponential function, and the long-term degradation component is represented by a single exponential function. The light-emitting element is highly reliable when formed to show a degradation curve represented by the function composed of two exponential functions. In other words, the function composed of two exponential functions in one embodiment of the present invention is capable of accurately fitting the degradation curve of the highly reliable light-emitting element.
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