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Patent Agency Ranking
1.发明公开公开(公告)号：US20240081090A1
公开(公告)日：2024-03-07
申请号：US18229808
申请日：2023-08-03
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Akira NAGASAKA , Kunihiko SUZUKI , Ryo NARUKAWA
CPC classification number: H10K50/167 , H10K50/157 , H10K59/131 , H10K59/351 , H10K59/40 , H10K85/6572 , H10K85/6574 , H10K85/6576 , H10K2101/30
Abstract: The reliability of a light-emitting device is improved. Provided is a light-emitting device including a light-emitting layer between a first electrode and a second electrode. The light-emitting layer contains a light-emitting substance and a first organic compound. A difference between a sum of energy of the first organic compound in a ground state and energy of an oxygen molecule in a ground state and energy of a transition state formed by the first organic compound and the oxygen molecule is greater than or equal to 1.84 eV. A difference between the energy of the transition state formed by the first organic compound and the oxygen molecule and energy of an oxygen adduct of the first organic compound in a ground state is less than or equal to 0.87 eV.
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2.发明公开公开(公告)号：US20230143281A1
公开(公告)日：2023-05-11
申请号：US17910103
申请日：2021-03-15
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Yui YOSHIYASU , Akira NAGASAKA , Hideko YOSHIZUMI , Toshiki SASAKI , Satoshi SEO
CPC classification number: H01L51/0074 , H01L51/0071 , H01L51/0073 , H01L51/0072 , H01L51/0054 , H01L51/5012
Abstract: A composition for a light-emitting device is provided. The composition is formed by mixing a first organic compound having a benzofuropyrimidine skeleton, and a second organic compound represented by General Formula (Q1):
R1 to R14 each independently represent hydrogen, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted monocyclic saturated hydrocarbon having 5 to 7 carbon atoms in a ring, a substituted or unsubstituted polycyclic saturated hydrocarbon having 7 to 10 carbon atoms in a ring, a substituted or unsubstituted aryl group having 6 to 13 carbon atoms in a ring, or a substituted or unsubstituted heteroaryl group having 3 to 20 carbon atoms in a ring. Furthermore, β1 and β2 each represent any of an unsubstituted β-naphthyl group, an unsubstituted biphenyl group, and an unsubstituted terphenyl group, and at least one of β1 and β2 is an unsubstituted β-naphthyl group.-
公开(公告)号：US20250017109A1
公开(公告)日：2025-01-09
申请号：US18708907
申请日：2022-11-16
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Akira NAGASAKA , Yuji IWAKI , Sachiko KAWAKAMI , Tsunenori SUZUKI , Tatsuyoshi TAKAHASHI , Takuya HARUYAMA , Satoshi SEO
Abstract: A fluorescent light-emitting device using a host material that is less likely to form an oxygen adduct and having a high emission efficiency is provided. In addition, a highly reliable electronic device or light-emitting device is provided. A light-emitting device including at least a light-emitting layer between an anode and a cathode is provided. The light-emitting layer includes a first organic compound that is a light-emitting substance emitting fluorescent light and a second organic compound having a fluoranthene skeleton. The maximum peak wavelength of the first organic compound is λmax (nm), and in the case where λn (nm) represents a wavelength of an intensity corresponding to 1/e of a maximum peak intensity in an emission spectrum of the first organic compound, λ1 (nm) represents the shortest wavelength λn in a wavelength longer than the λmax, and λ2 (nm) represents the longest wavelength Ln in a wavelength shorter than λmax, a difference between the λ1 and the λ2 is greater than or equal to 5 nm and less than or equal to 45 nm.
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公开(公告)号：US20240349603A1
公开(公告)日：2024-10-17
申请号：US18626450
申请日：2024-04-04
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Eriko AOYAMA , Hayato YAMAWAKI , Hiromi SEO , Toshiki SASAKI , Akira NAGASAKA , Nobuharu OHSAWA , Sachiko KAWAKAMI , Harue OSAKA
IPC: H10K85/60 , H10K50/17 , H10K50/19 , H10K101/50
CPC classification number: H10K85/6572 , H10K50/19 , H10K85/624 , H10K85/654 , H10K50/171 , H10K2101/50
Abstract: A light-emitting device with high efficiency and high reliability. The light-emitting device includes an organic compound layer between a first electrode and a second electrode. The organic compound layer includes a first light-emitting unit, a second light-emitting unit, and an intermediate layer. The intermediate layer is positioned between the first light-emitting unit and the second light-emitting unit. The intermediate layer includes an organic compound. A peak current of electron oxidation is detected and a peak current of electron reduction is not detected in the case where the organic compound is measured by CV at a scan rate greater than or equal to 1 V/s and less than or equal to 100 V/s.
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公开(公告)号：US20210363151A1
公开(公告)日：2021-11-25
申请号：US17058435
申请日：2019-05-21
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Satoshi SEO , Satomi WATABE , Hideko YOSHIZUMI , Hiromitsu KIDO , Toshiki SASAKI , Akira NAGASAKA , Yuta KAWANO
IPC: C07D491/048 , C07D513/04 , C07D519/00 , H01L51/00
Abstract: A benzofuropyrimidine derivative or benzothienopyrimidine derivative that is a novel organic compound is provided. An organic compound represented by General Formula (G1) below. Q represents oxygen or sulfur. Ar1, Ar2, Ar3, and Ar4 each independently represent an aromatic hydrocarbon ring, and the number of carbon atoms included in the aromatic hydrocarbon ring is 6 to 25. m and n are each 0 or 1. A is a group having 12 to 100 carbon atoms in total and includes one or more of a benzene ring, a naphthalene ring, a fluorene ring, a phenanthrene ring, a triphenylene ring, a heteroaromatic ring including a dibenzothiophene ring, a heteroaromatic ring including a dibenzofuran ring, a heteroaromatic ring including a carbazole ring, a benzimidazole ring, and a triphenylamine structure.
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