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公开(公告)号:US20250031546A1
公开(公告)日:2025-01-23
申请号:US18754598
申请日:2024-06-26
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor: Shunpei YAMAZAKI , Harue OSAKA
IPC: H10K59/38 , H10K59/12 , H10K101/30
Abstract: A display panel is provided. The display panel includes a display region, an insulating film, and a sealing film; the display region includes a pixel; and the pixel includes a display element and a color conversion layer. The insulating film covers the display element, the sealing film includes a region, the color conversion layer is sandwiched between the region and the insulating film, and the sealing film includes a region that is on the outside of the display region and in contact with the insulating film. The display element includes a first layer, a second layer, a third layer, and a fourth layer. The first layer contains a first material and a second material, the second layer contains a third material, the third layer contains a light-emitting material and a fourth material, the fourth layer contains a fifth material and a sixth material, the first material has a HOMO level higher than or equal to −5.7 eV and lower than or equal to −5.4 eV, the second material has an acceptor property, the third material has a lower HOMO level than the first material, the fifth material has a HOMO level higher than or equal to −6.0 eV, and the sixth material is an organic complex of alkali metal or an organic complex of alkaline earth metal.
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公开(公告)号:US20250011286A1
公开(公告)日:2025-01-09
申请号:US18768495
申请日:2024-07-10
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor: Hiroko NOMURA , Harue OSAKA , Takahiro USHIKUBO , Sachiko KAWAKAMI , Satoshi SEO , Satoko SHITAGAKI
IPC: C07D209/86 , H10K85/60
Abstract: To provide a light-emitting element having high luminous efficiency and to provide a light-emitting device and an electronic device which consumes low power and is driven at low voltage, a carbazole derivative represented by the general formula (1) is provided. In the formula, α1, α2, α3, and α4 each represent an arylene group having less than or equal to 13 carbon atoms; Ar1 and Ar2 each represent an aryl group having less than or equal to 13 carbon atoms; R1 represents any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group; and R2 represents any of an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group. In addition, l, m, and n are each independently 0 or 1.
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公开(公告)号:US20240341186A1
公开(公告)日:2024-10-10
申请号:US18592732
申请日:2024-03-01
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor: Takuya HARUYAMA , Harue OSAKA , Naoaki HASHIMOTO
IPC: H10K85/60 , C07F5/02 , C09K11/06 , H10K50/12 , H10K101/00
CPC classification number: H10K85/658 , C07F5/027 , C09K11/06 , C09K2211/1018 , H10K50/12 , H10K2101/27
Abstract: An organic compound is represented by General Formula (G1). In General Formula (G1), X1 to X4 each independently represent any one of groups represented by General Formulae (g1-1) to (g1-3). Two or three of X1 to X4 represent the group represented by General Formula (g1-1) or (g1-2). R1 to R14 each independently represent any one of hydrogen (including deuterium), a straight-chain alkyl group having 1 to 10 carbon atoms, a branched alkyl group having 3 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 12 carbon atoms, a substituted or unsubstituted cycloalkyl group having 4 to 10 carbon atoms and having a bridged structure, a trialkylsilyl group having 3 to 12 carbon atoms, a alkoxy group having 2 to 10 carbon atoms, and a fluoroalkyl group having 1 to 10 carbon atoms. Ar1 to Ar4 each independently represent a substituted or unsubstituted aryl group having 6 to 30 carbon atoms or a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms.
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4.
公开(公告)号:US20230309385A1
公开(公告)日:2023-09-28
申请号:US17923834
申请日:2021-05-06
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor: Kyoko TAKEDA , Kunihiko SUZUKI , Harue OSAKA , Satoshi SEO , Tsunenori SUZUKI , Takuya ISHIMOTO , Naoaki HASHIMOTO
IPC: H10K85/60 , C07D493/14 , C09K11/06
CPC classification number: H10K85/636 , C07D493/14 , C09K11/06 , C09K2211/1018 , H10K59/12 , H10K85/6572 , H10K85/6574
Abstract: A novel organic compound is provided. Alternatively, an organic compound that emits light with favorable chromaticity is provided. Alternatively, an organic compound that emits blue light with favorable chromaticity is provided. Alternatively, a light-emitting element with favorable emission efficiency is provided. Alternatively, an organic compound with an excellent carrier-transport property is provided. The organic compound includes any of a substituted or unsubstituted dibenzofurobisbenzofuran skeleton, a substituted or unsubstituted dibenzothienobisbenzothiophene skeleton, a substituted or unsubstituted benzobisbenzothienobenzofuran skeleton, and a substituted or unsubstituted dibenzothienobisbenzofuran skeleton and one or two amino groups. In the organic compound, the amino group includes a substituted or unsubstituted heteroaryl group and any of a substituted or unsubstituted aromatic hydrocarbon group having 6 to 25 carbon atoms and a substituted or unsubstituted heteroaryl group having 5 to 25 carbon atoms.
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5.
公开(公告)号:US20230276700A1
公开(公告)日:2023-08-31
申请号:US18020490
申请日:2021-07-29
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor: Yuta Kawano , Airi UEDA , Takeyoshi WATABE , Nobuharu OHSAWA , Keito TOSU , Harue OSAKA , Satoshi SEO
IPC: H10K85/60 , H10K50/858 , H10K71/13 , C07D251/24 , C09K11/06
CPC classification number: H10K85/654 , H10K50/858 , H10K71/135 , C07D251/24 , C09K11/06 , H10K50/15
Abstract: An inexpensive light-emitting device with high emission efficiency is provided. A light-emitting device including an anode, a cathode, and an EL layer positioned between the anode and the cathode is provided. The EL layer includes a hole-transport region, a light-emitting layer, and an electron-transport region. The hole-transport region is positioned between the anode and the light-emitting layer. The electron-transport region is positioned between the cathode and the light-emitting layer. The hole-transport region contains a heteropoly acid and an organic compound having a π-electron rich aromatic ring or contains a heteropoly acid and an organic compound having a π-electron rich heteroaromatic ring. The electron-transport region contains an organic compound with an electron-transport property. The ordinary refractive index of the organic compound with an electron-transport property is higher than or equal to 1.50 and lower than or equal to 1.75 for light with a wavelength of greater than or equal to 455 nm and less than or equal to 465 nm.
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公开(公告)号:US20230129057A1
公开(公告)日:2023-04-27
申请号:US17798499
申请日:2021-02-01
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor: Tomoya Hirose , Yasuhiro NIIKURA , Hiroshi KADOMA , Nobuharu OHSAWA , Harue OSAKA , Satoshi SEO
IPC: C07D491/048 , C07D495/04
Abstract: An organic compound that easily exhibits thermally activated delayed fluorescence (TADF) is provided. An organic compound represented by General Formula (G1) is provided. In General Formula (G1), R1 to R8 are each independently any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 7 carbon atoms, and a substituted or unsubstituted diarylamino group; at least one of R1 to R8 is a substituted or unsubstituted diarylamino group; a is a substituted or unsubstituted phenylene group; n is an integer of 0 to 4; and A represents a substituted or unsubstituted benzofuropyrimidine skeleton or benzothienopyrimidine skeleton.
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公开(公告)号:US20230096419A1
公开(公告)日:2023-03-30
申请号:US17957181
申请日:2022-09-30
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor: Yusuke NONAKA , Satoshi SEO , Harue OSAKA , Tsunenori SUZUKI , Takeyoshi WATABE
Abstract: To increase emission efficiency of a fluorescent light-emitting element by efficiently utilizing a triplet exciton generated in a light-emitting layer. The light-emitting layer of the light-emitting element includes at least a host material and a guest material. The triplet exciton generated from the host material in the light-emitting layer is changed to a singlet exciton by triplet-triplet annihilation (TTA). The guest material (fluorescent dopant) is made to emit light by energy transfer from the singlet exciton. Thus, the emission efficiency of the light-emitting element is improved.
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公开(公告)号:US20220140250A1
公开(公告)日:2022-05-05
申请号:US17516826
申请日:2021-11-02
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor: Yuta KAWANO , Takeyoshi WATABE , Airi UEDA , Nobuharu OHSAWA , Keito TOSU , Harue OSAKA , Ryo NARUKAWA , Satoshi SEO
IPC: H01L51/00
Abstract: A novel light-emitting device, a novel light-emitting apparatus, a novel electronic device, a novel display device, and a novel lighting device which are highly convenient, useful, or reliable are provided. The light-emitting device includes a first electrode, a second electrode, a first layer, and a second layer. The second electrode includes a region overlapping with the first electrode, the first layer includes a region sandwiched between the first electrode and the second electrode, the first layer includes a light-emitting material, the light-emitting material has a function of emitting photoluminescent light in a solution, the photoluminescent light has a first spectrum, the first spectrum has a maximum peak at a wavelength λ1, and the wavelength λ1 is in the range greater than or equal to 440 nm and less than or equal to 470 nm. The second layer includes a region sandwiched between the first layer and the second electrode, the second layer includes a first organic compound, the first organic compound has a first refractive index n1 with respect to light having the wavelength λ1, and the first refractive index n1 is more than or equal to 1.4 and less than or equal to 1.75.
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9.
公开(公告)号:US20200119276A1
公开(公告)日:2020-04-16
申请号:US16699991
申请日:2019-12-02
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor: Harue OSAKA , Satoko SHITAGAKI , Tsunenori SUZUKI , Nobuharu OHSAWA , Sachiko KAWAKAMI , Satoshi SEO
IPC: H01L51/00 , C07C209/10 , C07C211/54 , C09B57/00 , H05B33/20 , H05B33/14
Abstract: An object is to provide a light-emitting element having high light-emission efficiency by provision of a novel fluorene derivative as represented by General Formula (G1) below In the formula, R1 to R8 independently represent any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, or a substituted or unsubstituted biphenyl group. Further, α1 to α4 independently represent any of a substituted or unsubstituted arylene group having 6 to 12 carbon atoms. Furthermore, Ar1 and Ar2 independently represent any of an aryl group having 6 to 13 carbon atoms in a ring and Ar3 represents an alkyl group having 1 to 6 carbon atoms or a substituted or unsubstituted aryl group having 6 to 12 carbon atoms. J, k, m, and n each independently represent 0 or 1.
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10.
公开(公告)号:US20190067586A1
公开(公告)日:2019-02-28
申请号:US16170480
申请日:2018-10-25
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor: Kaori OGITA , Hiromi NOWATARI , Harue OSAKA , Takahiro USHIKUBO , Satoshi SEO , Takako TAKASU
CPC classification number: H01L51/0052 , C07F15/0033 , C09K11/06 , C09K2211/1007 , C09K2211/1011 , C09K2211/1014 , C09K2211/1029 , C09K2211/1044 , C09K2211/1092 , H01L51/0058 , H01L51/0072 , H01L51/0085 , H05B33/14
Abstract: A composite material which includes an organic compound and an inorganic compound and has a high carrier-transport property is provided. A composite material having a good property of carrier injection into an organic compound is provided. A composite material in which light absorption due to charge-transfer interaction is unlikely to occur is provided. A composite material having a high visible-light-transmitting property is provided. A composite material including a hydrocarbon compound and an inorganic compound exhibiting an electron-accepting property with respect to the hydrocarbon compound is provided. The hydrocarbon compound has a substituent bonded to a naphthalene skeleton, a phenanthrene skeleton, or a triphenylene skeleton and has a molecular weight of 350 to 2000, and the substituent has one or more rings selected from a benzene ring, a naphthalene ring, a phenanthrene ring, and a triphenylene ring.
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