公开(公告)号：US20240172465A1

公开(公告)日：2024-05-23

申请号：US18382079

申请日：2023-10-20

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Nobuharu OHSAWA ,  Hiromitsu KIDO ,  Satoshi SEO ,  Hideko YOSHIZUMI

IPC: H10K50/12

CPC classification number: H10K50/121 ,  H10K2101/10

Abstract: A light-emitting device with high emission efficiency, reliability, and color purity is to be provided. The light-emitting device includes a first electrode, a second electrode, and an organic compound layer. The organic compound layer is between the first electrode and the second electrode and includes a light-emitting layer. The light-emitting layer includes a first substance and a second substance. The second substance causes light emission from a doublet excited state. The doublet excited level of the second substance is lower than the singlet excited level of the first substance and is higher than the triplet excited level of the first substance. The second substance emits light.

公开(公告)号：US20240138259A1

公开(公告)日：2024-04-25

申请号：US18262154

申请日：2022-01-12

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Yui YOSHIYASU ,  Hideko YOSHIZUMI ,  Nobuharu OHSAWA ,  Satoshi SEO

IPC: H10K85/60 ,  C07D491/22 ,  C09K11/06

CPC classification number: H10K85/6572 ,  C07D491/22 ,  C09K11/06 ,  H10K85/636 ,  H10K85/657 ,  H10K50/11

Abstract: A novel organic compound is to be provided. In other words, a novel organic compound effective in improving element characteristics is to be provided. The organic compound is represented by General Formula (G1) shown below.




In General Formula (G1) above, at least one or two of A1 to A4 represent nitrogen, and the others represent carbon. At least one or two of A5 to A8 represent nitrogen, and the others represent carbon. In addition, B1 and B2 each independently represent hydrogen, an alkyl group having 1 to 6 carbon atoms, or a cyano group. In addition, Htuni1 and Htuni2 each independently represent a hole-transport skeleton.

公开(公告)号：US20240130225A1

公开(公告)日：2024-04-18

申请号：US18262595

申请日：2022-01-21

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Nobuharu OHSAWA ,  Satoshi SEO ,  Yui YOSHIYASU ,  Hideko YOSHIZUMI

IPC: H10K85/60 ,  C09K11/06 ,  H10K85/30

CPC classification number: H10K85/633 ,  C09K11/06 ,  H10K85/342 ,  H10K85/636 ,  H10K85/654 ,  H10K85/6572 ,  H10K85/6576 ,  H10K50/11

Abstract: A novel light-emitting device that is highly convenient, useful, or reliable is provided. The light-emitting device includes a first electrode, a second electrode, and a first layer. The first layer is positioned between the first electrode and the second electrode. The first layer includes a light-emitting material, a first organic compound, and a first material. The light-emitting material has a function of emitting fluorescent light. The absorption spectrum of the light-emitting material has the longest-wavelength edge at a first wavelength. The first organic compound has a function of converting triplet excitation energy into light emission. The spectrum of the emitted light has the shortest-wavelength edge at a second wavelength. The second wavelength is positioned at a wavelength shorter than the first wavelength. The first organic compound includes a first substituent R1. The first substituent R1 is any of an alkyl group, a substituted or unsubstituted cycloalkyl group, and a trialkylsilyl group. The first material has a function of emitting delayed fluorescent light at room temperature. The difference between the HOMO level and the LUMO level of the first material is smaller than the difference between the HOMO level and the LUMO level of the first organic compound.

公开(公告)号：US20230112454A1

公开(公告)日：2023-04-13

申请号：US17981689

申请日：2022-11-07

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Miki KURIHARA ,  Hideko YOSHIZUMI ,  Satomi WATABE ,  Hiromitsu KIDO ,  Satoshi SEO

IPC: H01L51/00 ,  C07D491/048

Abstract: A novel organic compound is provided. That is, a novel organic compound that is effective in improving reliability of a light-emitting element is provided. The organic compound includes a condensed ring including a pyrimidine ring and is represented by General Formula (G1). In General Formula (G1), A represents a group having 6 to 100 carbon atoms and includes at least one of an aromatic ring and a heteroaromatic ring. The aromatic ring and the heteroaromatic ring may each include a substituent. Furthermore, Q represents oxygen or sulfur. A ring X represents a substituted or unsubstituted naphthalene ring or a substituted or unsubstituted phenanthrene ring.

公开(公告)号：US20230018126A1

公开(公告)日：2023-01-19

申请号：US17841856

申请日：2022-06-16

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Hideko YOSHIZUMI ,  Ryo NARUKAWA ,  Satoko NUMATA

IPC: H01L51/50 ,  H01L51/00

Abstract: A novel light-emitting device that is highly convenient, useful, or reliable is provided. The light-emitting device includes a first electrode, a second electrode, and a first unit. The first unit is located between the first electrode and the second electrode, and the first unit has a function of emitting light. The first unit contains a light-emitting organic compound and an organic compound HRM. The organic compound HRM has four or more rotatable bonds and a principal moment of inertia. The principal moment of inertia includes a first normalized principal moment of inertia NPR1 and a second normalized principal moment of inertia NPR2 in a predetermined region.

公开(公告)号：US20220173327A1

公开(公告)日：2022-06-02

申请号：US17601797

申请日：2020-04-01

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Tomoka HARA ,  Hideko YOSHIZUMI ,  Toshiki SASAKI ,  Satoshi SEO

IPC: H01L51/00 ,  C07D491/048 ,  C09K11/06

Abstract: A benzofuropyrimidine derivative or a benzothienopyrimidine derivative, which is a novel organic compound, is provided. The organic compound is represented by General Formula (G1) below. In General Formula (G1), Q represents oxygen or sulfur. A represents any one of a substituted or unsubstituted condensed aromatic hydrocarbon ring having 6 to 13 carbon atoms in the ring and a substituted or unsubstituted π-electron rich condensed heteroaromatic ring having 6 to 13 carbon atoms in the ring; and R1 to R19 each independently represent any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 7 carbon atoms in the ring, and a substituted or unsubstituted aryl group having 6 to 13 carbon atoms in the ring.

公开(公告)号：US20210206775A1

公开(公告)日：2021-07-08

申请号：US17056625

申请日：2019-05-21

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satomi WATABE ,  Hideko YOSHIZUMI ,  Satoshi SEO ,  Hiromitsu KIDO ,  Toshiki SASAKI

IPC: C07D491/048 ,  C07D519/00 ,  H01L51/00

Abstract: Provided is a novel organic compound, a benzofuropyrimidine derivative or a benzothienopyrimidine derivative, which is an organic compound represented by General Formula (G1) below. In General Formula (G1), Q represents oxygen or sulfur. Furthermore, 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.

公开(公告)号：US20200259099A1

公开(公告)日：2020-08-13

申请号：US16647602

申请日：2018-09-06

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Miki KURIHARA ,  Hideko YOSHIZUMI ,  Hiromitsu KIDO ,  Satomi WATABE ,  Satoshi SEO

IPC: H01L51/00 ,  C07D491/048 ,  C09K11/02

Abstract: A benzofuropyrimidine derivative or a benzothienopyrimidine derivative that is a novel organic compound is provided. The organic compound has a benzofuropyrimidine skeleton or a benzothienopyrimidine skeleton and is represented by General Formula (G1) below. In General Formula (G1), Q represents oxygen or sulfur. Each of A1 and A2 independently represents a substituted or unsubstituted polycyclic aromatic hydrocarbon. Furthermore, m represents any one of integers from 0 to 4. Furthermore, n represents any one of integers from 1 to 4. Each of R1 to R12 independently represents any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 7 carbon atoms, and a substituted or unsubstituted aryl group having 6 to 13 carbon atoms.

公开(公告)号：US20200152887A1

公开(公告)日：2020-05-14

申请号：US16473372

申请日：2017-12-15

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Tomoya YAMAGUCHI ,  Hideko YOSHIZUMI ,  Hiromitsu KIDO ,  Tatsuyoshi TAKAHASHI ,  Satoshi SEO

IPC: H01L51/00 ,  C07D491/048

Abstract: A novel compound and a light-emitting element with high emission efficiency and a long lifetime are provided. The novel compound includes a benzofuropyrazine skeleton or a benzothienopyrazine skeleton, and each of a benzene ring and a pyrazine ring in the benzofuropyrazine skeleton or the benzothienopyrazine skeleton independently includes a substituent with a total number of carbon atoms of 6 to 100 inclusive. The light-emitting element includes the compound.

公开(公告)号：US20200083462A1

公开(公告)日：2020-03-12

申请号：US16493842

申请日：2018-03-07

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Miki KURIHARA ,  Hideko YOSHIZUMI ,  Satomi WATABE ,  Hiromitsu KIDO ,  Satoshi SEO

IPC: H01L51/00 ,  C07D491/048

Abstract: A novel organic compound is provided. That is, a novel organic compound that is effective in improving reliability of a light-emitting element is provided. The organic compound includes a condensed ring including a pyrimidine ring and is represented by General Formula (G1). In General Formula (G1), A represents a group having 6 to 100 carbon atoms and includes at least one of an aromatic ring and a heteroaromatic ring. The aromatic ring and the heteroaromatic ring may each include a substituent. Furthermore, Q represents oxygen or sulfur. A ring X represents a substituted or unsubstituted naphthalene ring or a substituted or unsubstituted phenanthrene ring.