公开(公告)号：US10573837B2

公开(公告)日：2020-02-25

申请号：US15985748

申请日：2018-05-22

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Naoaki Hashimoto ,  Tsunenori Suzuki ,  Satoshi Seo ,  Hiromi Seo ,  Hiromitsu Kido

IPC: H01L51/50 ,  H01L51/00

Abstract: A light-emitting element that includes a fluorescent material and has a high emission efficiency is provided. A light-emitting element in which a delayed fluorescence component due to TTA accounts for a high proportion of emissive components is provided. A novel light-emitting device with a high emission efficiency and a low power consumption is provided. A light-emitting element includes an anode, a cathode, and an EL layer. The EL layer includes a light-emitting layer including a host material and an electron-transport layer including a first material in contact with the light-emitting layer. The LUMO level of the first material is lower than that of the host material. The proportion of a delayed fluorescence component due to TTA is greater than or equal to 10 percent of the light emission from the EL layer. The proportion of the delayed fluorescence component due to TTA may be greater than or equal to 15 percent of the light emission.

公开(公告)号：US10207992B2

公开(公告)日：2019-02-19

申请号：US15334929

申请日：2016-10-26

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroki Suzuki ,  Satoshi Seo ,  Tsunenori Suzuki ,  Naoaki Hashimoto

IPC: C07D209/80 ,  H01L51/00 ,  C09K11/02 ,  C09K11/06 ,  H05B33/14 ,  H05B33/20 ,  H01L51/50

Abstract: A novel dibenzocarbazole compound with which a light-emitting element having low power consumption, high reliability, and high color purity can be fabricated is provided. In the dibenzocarbazole compound, an aryl group which has 14 to 30 carbon atoms and at least an anthracene skeleton is bonded to nitrogen of a dibenzo[a,g]carbazole skeleton or a dibenzo[a,i]carbazole skeleton. Furthermore, a light-emitting element including the dibenzocarbazole compound is provided.

公开(公告)号：US09586924B2

公开(公告)日：2017-03-07

申请号：US14809427

申请日：2015-07-27

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Sachiko Kawakami ,  Naoaki Hashimoto ,  Tsunenori Suzuki ,  Satoshi Seo

IPC: C07D307/77 ,  H01L51/00 ,  C07C211/61 ,  C09K11/06 ,  H01L51/50

CPC classification number: H01L51/006 ,  C07C211/61 ,  C07D307/77 ,  C09K11/06 ,  C09K2211/1011 ,  C09K2211/1022 ,  C09K2211/1088 ,  H01L51/0054 ,  H01L51/0061 ,  H01L51/0073 ,  H01L51/5012

Abstract: An organic compound that emits blue light with high color purity and has a long lifetime is provided as a novel substance. The organic compound is a fluorescent organic compound having a structure in which benzonaphthofuranylamine is bonded to the 1-position and the 6-position of a pyrene skeleton.

Abstract translation: 作为新物质，提供了发出高纯度且寿命长的蓝光的有机化合物。 有机化合物是具有苯并萘并呋喃胺与芘骨架的1位和6位结合的荧光有机化合物。

公开(公告)号：US20150243892A1

公开(公告)日：2015-08-27

申请号：US14625834

申请日：2015-02-19

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kaori Ogita ,  Tsunenori Suzuki ,  Naoaki Hashimoto ,  Toshiki Hamada ,  Kunihiko Suzuki ,  Shunsuke Hosoumi ,  Satoshi Seo

IPC: H01L51/00 ,  C07D307/91 ,  C07C211/61

CPC classification number: H01L51/006 ,  C07C211/61 ,  C07C2603/18 ,  C07C2603/50 ,  C07D307/91 ,  H01L51/0061 ,  H01L51/0073 ,  H01L51/5012

Abstract: A light-emitting element with high emission efficiency. The light-emitting element includes a pair of electrodes and an EL layer between the pair of electrodes. In the light-emitting element, the EL layer contains at least a light-emitting material, the light-emitting material is a 1,6-bis(diphenylamino)pyrene derivative, and a structural change between an excited state and a ground state in the 1,6-bis(diphenylamino)pyrene derivative is smaller than that in a 1,6-bis(diphenylamino)pyrene derivative in which hydrogen is bonded to ortho positions of two phenyl groups of each of two diphenylamino groups.

Abstract translation: 发光效率高的发光元件。 发光元件包括一对电极和一对电极之间的EL层。 在发光元件中，EL层至少含有发光材料，发光材料为1,6-双（二苯基氨基）芘衍生物，激发态与基态之间的结构变化为 1,6-双（二苯基氨基）芘衍生物小于1,6-双（二苯基氨基）芘衍生物，其中氢与两个二苯基氨基中的每一个的两个苯基的邻位键合。

公开(公告)号：US12302685B2

公开(公告)日：2025-05-13

申请号：US18645743

申请日：2024-04-25

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi Seo ,  Hiromi Seo ,  Kunihiko Suzuki ,  Kanta Abe ,  Yuji Iwaki ,  Naoaki Hashimoto ,  Tsunenori Suzuki

IPC: H10K50/16 ,  H10K50/11 ,  H10K50/15 ,  H10K50/17 ,  H10K50/81 ,  H10K50/82 ,  H10K59/00 ,  H10K85/00 ,  H10K85/30 ,  H10K101/40

Abstract: A novel light-emitting device is provided. A light-emitting device with high emission efficiency is provided. A light-emitting device with a long lifetime is provided. A light-emitting device with low driving voltage is provided. The light-emitting device includes an anode, a cathode, and an EL layer between the anode and the cathode. The EL layer includes a hole-injection layer, a light-emitting layer, and an electron-transport layer. The hole-injection layer is positioned between the anode and the light-emitting layer. The electron-transport layer is positioned between the light-emitting layer and the cathode. The hole-injection layer contains a first substance and a second substance. The first substance is an organic compound which has a hole-transport property and a HOMO level higher than or equal to −5.7 eV and lower than or equal to −5.4 eV. The second substance exhibits an electron-accepting property with respect to the first substance. The electron-transport layer contains a material whose resistance decreases with current flowing therethrough.

公开(公告)号：US12219873B2

公开(公告)日：2025-02-04

申请号：US18420214

申请日：2024-01-23

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi Seo ,  Tsunenori Suzuki ,  Naoaki Hashimoto

IPC: H01L51/50 ,  H10K50/11 ,  H10K50/155 ,  H10K50/16 ,  H10K50/84 ,  H10K85/60 ,  H10K101/30 ,  H10K101/40

Abstract: Provided is a novel light-emitting element, a light-emitting element with a long lifetime, or a light-emitting element with high emission efficiency. The light-emitting element includes an EL layer between a pair of electrodes. The EL layer includes at least a light-emitting layer containing a fluorescent substance and a host material, a first electron-transport layer containing a first electron-transport material, and a second electron-transport layer containing a second electron-transport material, which are in contact with each other and in this order. The LUMO level of each of the host material and the second electron-transport material is higher than the LUMO level of the first electron-transport material.

公开(公告)号：US20240397818A1

公开(公告)日：2024-11-28

申请号：US18793024

申请日：2024-08-02

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yui YOSHIYASU ,  Naoaki Hashimoto ,  Tatsuyoshi Takahashi ,  Sachiko Kawakami ,  Satoshi Seo

IPC: H10K85/60 ,  H10K50/16

Abstract: A novel mixed material for a light-emitting device with improved heat resistance is provided. The mixed material for a light-emitting device includes a first heteroaromatic compound and a second heteroaromatic compound. The first heteroaromatic compound includes a first heteroaromatic ring. The first heteroaromatic ring includes a ring including two or more nitrogen atoms and any one of a benzene ring and a pyridine ring or a ring including a diazine ring or a triazine ring. The second heteroaromatic compound includes a second heteroaromatic ring. The second heteroaromatic ring includes a ring including two or more nitrogen atoms and any one of a benzene ring and a pyridine ring or a ring including a diazine ring or a triazine ring. A structure of the first heteroaromatic ring is different from a structure of the second heteroaromatic ring.

公开(公告)号：US12063803B2

公开(公告)日：2024-08-13

申请号：US17356716

申请日：2021-06-24

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Naoaki Hashimoto ,  Tsunenori Suzuki ,  Satoshi Seo ,  Hiromi Seo ,  Hiromitsu Kido

IPC: H10K50/11 ,  H10K50/15 ,  H10K50/16 ,  H10K59/38 ,  G09G3/3266 ,  G09G3/3275 ,  H01L27/146 ,  H10K50/14 ,  H10K50/17 ,  H10K50/818 ,  H10K50/842 ,  H10K50/856 ,  H10K50/86 ,  H10K59/121 ,  H10K59/126 ,  H10K59/131 ,  H10K59/32 ,  H10K59/35 ,  H10K59/40 ,  H10K85/60 ,  H10K101/00 ,  H10K101/10

CPC classification number: H10K50/11 ,  H10K50/15 ,  H10K50/16 ,  H10K59/38 ,  G09G3/3266 ,  G09G3/3275 ,  G09G2300/0408 ,  G09G2300/0804 ,  H01L27/14678 ,  H10K50/14 ,  H10K50/17 ,  H10K50/171 ,  H10K50/818 ,  H10K50/8426 ,  H10K50/856 ,  H10K50/865 ,  H10K59/1216 ,  H10K59/126 ,  H10K59/131 ,  H10K59/32 ,  H10K59/35 ,  H10K59/40 ,  H10K85/615 ,  H10K85/622 ,  H10K85/626 ,  H10K85/633 ,  H10K85/654 ,  H10K85/6572 ,  H10K85/6576 ,  H10K2101/10 ,  H10K2101/90

Abstract: A light-emitting element that includes a fluorescent material and has a high emission efficiency is provided. A light-emitting element in which a delayed fluorescence component due to TTA accounts for a high proportion of emissive components is provided. A novel light-emitting device with a high emission efficiency and a low power consumption is provided. A light-emitting element includes an anode, a cathode, and an EL layer. The EL layer includes a light-emitting layer including a host material and an electron-transport layer including a first material in contact with the light-emitting layer. The LUMO level of the first material is lower than that of the host material. The proportion of a delayed fluorescence component due to TTA is greater than or equal to 10 percent of the light emission from the EL layer. The proportion of the delayed fluorescence component due to TTA may be greater than or equal to 15 percent of the light emission.

公开(公告)号：US20240124477A1

公开(公告)日：2024-04-18

申请号：US18382640

申请日：2023-10-23

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kyoko Takeda ,  Harue Osaka ,  Satoshi Seo ,  Tsunenori Suzuki ,  Naoaki Hashimoto ,  Yusuke Takita

IPC: C07D491/048 ,  C07D495/00 ,  H10K85/60

CPC classification number: C07D491/048 ,  C07D495/00 ,  H10K85/636 ,  H10K85/6572 ,  H10K85/6574 ,  H10K85/6576

Abstract: A novel organic compound is provided. Alternatively, an organic compound that exhibits light emission with favorable chromaticity is provided. Alternatively, an organic compound that exhibits blue light emission with favorable chromaticity is provided. Alternatively, an organic compound with favorable emission efficiency is provided. Alternatively, an organic compound having a high carrier-transport property is provided. Alternatively, an organic compound with favorable reliability is provided. An organic compound including at least one amino group in which any one of a substituted or unsubstituted dibenzofuranyl group, a substituted or unsubstituted dibenzothiophenyl group, and a substituted or unsubstituted carbazolyl group is boneded to any one of a substituted or unsubstituted naphthobisbenzofuran skeleton, a substituted or unsubstituted naphthobisbenzothiophene skeleton, and a substituted or unsubstituted naphthobenzofuranobenzothiophene skeleton is provided.

公开(公告)号：US11925109B2

公开(公告)日：2024-03-05

申请号：US17116031

申请日：2020-12-09

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kyoko Takeda ,  Harue Osaka ,  Hiroshi Kadoma ,  Satoshi Seo ,  Tsunenori Suzuki ,  Naoaki Hashimoto

IPC: H01L51/00 ,  H10K85/60 ,  C07D493/04 ,  C09K11/06 ,  H10K50/11

CPC classification number: H10K85/636 ,  C07D493/04 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1018 ,  H10K50/11 ,  H10K85/6572 ,  H10K85/6574

Abstract: A novel organic compound with favorable thermophysical properties is provided. An organic compound represented by General Formula (G1) is provided. At least one of X1 to X5 is a secondary or tertiary alkyl group having 3 to 6 carbon atoms in which a carbon atom bonded to a phenyl group branches. Each of R1 to R7 is independently any of hydrogen, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms, and an unsubstituted or alkyl-substituted aryl group having 6 to 13 carbon atoms. Ar1 represents a substituted or unsubstituted condensed heteroaromatic ring skeleton having 8 to 60 carbon atoms and composed of two or more aromatic rings, and Ar2 represents a substituted or unsubstituted aryl group having 6 to 25 carbon atoms. Furthermore, n is any of 1 to 3.