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公开(公告)号:US20240284766A1
公开(公告)日:2024-08-22
申请号:US18569497
申请日:2022-06-06
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor: Nobuharu OHSAWA , Takumu OKUYAMA , Satoshi SEO
IPC: H10K59/80 , H10K59/131
CPC classification number: H10K59/878 , H10K59/131
Abstract: A novel display device that is highly convenient, useful, or reliable is provided. The display device includes a first light-emitting device, a second light-emitting device, an insulating film, a conductive film, a first reflective film, and a second reflective film; the first light-emitting device includes a first electrode, a second electrode, and a first unit; and the first electrode is interposed between the first unit and the insulating film. The second light-emitting device includes a third electrode, a fourth electrode, and a second unit; the third electrode is interposed between the second unit and the insulating film; and a first gap is provided between the third electrode and the first electrode. The conductive film electrically connects the second electrode and the fourth electrode to each other, and the first gap is interposed between the conductive film and the insulating film. The first reflective film is interposed between the first electrode and the insulating film, and there is a first distance DR between the first reflective film and the second electrode. The second reflective film is interposed between the third electrode and the insulating film, and there is a second distance DG between the second reflective film and the fourth electrode. The second distance DG is longer than the first distance DR and the difference is larger than 20 nm and smaller than 85 nm.
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公开(公告)号:US20250040430A1
公开(公告)日:2025-01-30
申请号:US18887124
申请日:2024-09-17
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor: Naoaki HASHIMOTO , Satoshi SEO , Tsunenori SUZUKI , Yusuke TAKITA , Takumu OKUYAMA , Nobuharu OHSAWA , Shunpei YAMAZAKI , Toshiki SASAKI
IPC: H10K85/60 , H10K50/16 , H10K85/30 , H10K101/30
Abstract: A novel light-emitting device, a light-emitting device with high emission efficiency, a light-emitting device with a long lifetime, or a light-emitting device with low driving voltage is provided. An EL layer includes a first layer, a second layer, a third layer, a light-emitting layer, and a fourth layer in this order from the anode side. The first layer contains a first organic compound and a second organic compound. The fourth layer contains a seventh organic compound. The first organic compound exhibits an electron-accepting property with respect to the second organic compound. A HOMO level of the second organic compound is higher than or equal to −5.7 eV and lower than or equal to −5.4 eV. The fourth layer includes a region where the amount of seventh organic compound is large and a region where the amount of seventh organic compound is small in the thickness direction.
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公开(公告)号:US20220077397A1
公开(公告)日:2022-03-10
申请号:US17416754
申请日:2019-12-17
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor: Naoaki HASHIMOTO , Satoshi SEO , Tsunenori SUZUKI , Yusuke TAKITA , Takumu OKUYAMA , Nobuharu OHSAWA , Shunpei YAMAZAKI , Toshiki SASAKI
IPC: H01L51/00
Abstract: A novel light-emitting device, a light-emitting device with high emission efficiency, a light-emitting device with a long lifetime, or a light-emitting device with low driving voltage is provided. An EL layer includes a first layer, a second layer, a third layer, a light-emitting layer, and a fourth layer in this order from the anode side. The first layer contains a first organic compound and a second organic compound. The fourth layer contains a seventh organic compound. The first organic compound exhibits an electron-accepting property with respect to the second organic compound. A HOMO level of the second organic compound is higher than or equal to −5.7 eV and lower than or equal to −5.4 eV. The fourth layer includes a region where the amount of seventh organic compound is large and a region where the amount of seventh organic compound is small in the thickness direction.
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公开(公告)号:US20210159422A1
公开(公告)日:2021-05-27
申请号:US17263248
申请日:2019-07-24
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor: Sachiko KAWAKAMI , Rina SHIMAZAKI , Takumu OKUYAMA , Tsunenori SUZUKI , Satoshi SEO
IPC: H01L51/00 , C07D405/12
Abstract: A novel organic compound is provided. A novel organic compound having a hole-transport property is provided. A novel hole-transport material is provided. A novel light-emitting element is provided. A light-emitting element with a favorable lifetime is provided. A light-emitting element with favorable emission efficiency is provided. An organic compound having a substituted or unsubstituted benzonaphthofuran skeleton, a substituted or unsubstituted carbazole skeleton, and a substituted or unsubstituted amine skeleton is provided. Alternatively, a light-emitting element that uses the hole-transport material is provided.
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公开(公告)号:US20250008835A1
公开(公告)日:2025-01-02
申请号:US18825507
申请日:2024-09-05
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor: Sachiko KAWAKAMI , Rina SHIMAZAKI , Takumu OKUYAMA , Tsunenori SUZUKI , Satoshi SEO
IPC: H10K85/60 , C07D405/12 , H10K50/15
Abstract: A novel organic compound is provided. A novel organic compound having a hole-transport property is provided. A novel hole-transport material is provided. A novel light-emitting element is provided. A light-emitting element with a favorable lifetime is provided. A light-emitting element with favorable emission efficiency is provided. An organic compound having a substituted or unsubstituted benzonaphthofuran skeleton, a substituted or unsubstituted carbazole skeleton, and a substituted or unsubstituted amine skeleton is provided. Alternatively, a light-emitting element that uses the hole-transport material is provided.
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公开(公告)号:US20240423005A1
公开(公告)日:2024-12-19
申请号:US18814781
申请日:2024-08-26
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor: Satoshi SEO , Tsunenori SUZUKI , Takumu OKUYAMA , Yusuke TAKITA , Naoaki HASHIMOTO , Hiromi SEO , Nobuharu OHSAWA , Toshiki SASAKI , Shunpei YAMAZAKI
IPC: H10K50/11 , H10K50/15 , H10K50/16 , H10K50/17 , H10K85/30 , H10K85/60 , H10K101/10 , H10K101/30 , H10K101/40
Abstract: A novel light-emitting device is provided. Alternatively, a light-emitting device with high emission efficiency is provided. Alternatively, a light-emitting device having a long lifetime is provided. Alternatively, a light-emitting device having low driving voltage is provided. A light-emitting device including an EL layer including a first layer, a second layer, a third layer, a light-emitting layer, and a fourth layer in this order from the anode side is provided. The first layer includes a first organic compound and a second organic compound. The fourth layer includes a seventh organic compound. The first organic compound exhibits an electron-accepting property with respect to the second organic compound. The HOMO level of the second organic compound is from −5.7 eV to −5.4 eV. The HOMO level of the seventh organic compound is −6.0 eV or higher.
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公开(公告)号:US20230301126A1
公开(公告)日:2023-09-21
申请号:US18134847
申请日:2023-04-14
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor: Satoshi SEO , Tsunenori SUZUKI , Yusuke TAKITA , Takumu OKUYAMA , Anna TADA
CPC classification number: H10K50/11 , H10K50/15 , H10K2101/40
Abstract: A novel light-emitting device is provided. Alternatively, a light-emitting device with favorable emission efficiency is provided. Alternatively, a light-emitting device with a favorable lifetime is provided. Alternatively, a light-emitting device with a low driving voltage is provided. Provided is a light-emitting device including an anode, a cathode, and a layer including an organic compound that is positioned between the anode and the cathode, in which the layer including the organic compound includes a first layer, a second layer, and a light-emitting layer in this order from the anode side, the first layer includes a first substance and a second substance, the second layer includes a third substance, the first substance is an organic compound a HOMO level of which is higher than or equal to -5.8 eV and lower than or equal to -5.4 eV, the second substance is a substance that has an electron-acceptor property with respect to the first substance, and the third substance is an organic compound having a structure in which at least two substituents comprising carbazole rings are bonded to a naphthalene ring.
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公开(公告)号:US20210126213A1
公开(公告)日:2021-04-29
申请号:US16981793
申请日:2019-03-13
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor: Satoshi SEO , Tsunenori SUZUKI , Yusuke TAKITA , Takumu OKUYAMA , Anna TADA
IPC: H01L51/50
Abstract: A novel light-emitting device is provided. Alternatively, a light-emitting device with favorable emission efficiency is provided. Alternatively, a light-emitting device with a favorable lifetime is provided. Alternatively, a light-emitting device with a low driving voltage is provided. Provided is a light-emitting device including an anode, a cathode, and a layer including an organic compound that is positioned between the anode and the cathode, in which the layer including the organic compound includes a first layer, a second layer, and a light-emitting layer in this order from the anode side, the first layer includes a first substance and a second substance, the second layer includes a third substance, the first substance is an organic compound a HOMO level of which is higher than or equal to −5.8 eV and lower than or equal to −5.4 eV, the second substance is a substance that has an electron-acceptor property with respect to the first substance, and the third substance is an organic compound having a structure in which at least two substituents comprising carbazole rings are bonded to a naphthalene ring.
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公开(公告)号:US20220367816A1
公开(公告)日:2022-11-17
申请号:US17640843
申请日:2020-09-16
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor: Anna TADA , Sachiko KAWAKAMI , Takumu OKUYAMA , Tsunenori SUZUKI , Satoshi SEO
IPC: H01L51/00 , C07D307/77 , C09K11/06 , F21V31/00
Abstract: A novel organic compound is provided. An organic compound represented by General Formula (G1) below is provided. Note that in General Formula (G1), one of A and B represents a group represented by General Formula (g1) below, and the other of A and B, R1 to R8, and R11 to R14 each independently represent any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, a cyclic hydrocarbon group having 3 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, a cyano group, a halogen, a haloalkyl group having 1 to 6 carbon atoms, and a substituted or unsubstituted aromatic hydrocarbon group having 6 to 60 carbon atoms. R9 and R10 each independently represent any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, a cyclic hydrocarbon group having 3 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, a cyano group, a halogen, a haloalkyl group having 1 to 6 carbon atoms, and a substituted or unsubstituted phenyl group. Ar represents a substituted or unsubstituted aryl group having 6 to 13 carbon atoms.
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公开(公告)号:US20220069246A1
公开(公告)日:2022-03-03
申请号:US17610760
申请日:2020-05-07
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor: Satoshi SEO , Hiroshi KADOMA , Takumu OKUYAMA , Naoaki HASHIMOTO , Yusuke TAKITA , Tsunenori SUZUKI
IPC: H01L51/50
Abstract: A light-emitting device having a long lifetime is provided. In a light-emitting device that includes an EL layer between a pair of electrodes, the carrier balance is controlled with a hole-injection layer and an electron-transport layer of the EL layer having certain structures, so that the carrier balance spontaneously changes during driving and the initial degradation of the light-emitting device is inhibited. In addition, at this time, the rate of the spontaneous change is low when an electron-injection barrier at the interface between a light-emitting layer and the electron-transport layer of the EL layer which are stacked is high; thus, it is possible to obtain a light-emitting device which is excellent in terms of long-term degradation.
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