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.

公开(公告)号：US20250040429A1

公开(公告)日：2025-01-30

申请号：US18789774

申请日：2024-07-31

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Sachiko KAWAKAMI ,  Tsunenori SUZUKI ,  Yusuke TAKITA ,  Satoshi SEO

IPC: H10K85/60 ,  C07D307/77 ,  C09K11/06 ,  H10K50/11 ,  H10K50/15 ,  H10K59/121 ,  H10K101/30 ,  H10K101/40

Abstract: A novel light-emitting element is provided. A light-emitting element with a long lifetime is provided. A light-emitting element with high emission efficiency is provided. 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 hole-transport material including an organic compound having a substituted or unsubstituted benzonaphthofuran skeleton and a substituted or unsubstituted amine skeleton is provided. A light-emitting element using the hole-transport material is provided. An organic compound in which an amine skeleton including two aromatic hydrocarbon groups having 6 to 60 carbon atoms is bonded to the 6- or 8-position of the benzonaphthofuran skeleton is provided.

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.

公开(公告)号：US20210384440A1

公开(公告)日：2021-12-09

申请号：US17401948

申请日：2021-08-13

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Sachiko KAWAKAMI ,  Tsunenori SUZUKI ,  Yusuke TAKITA ,  Satoshi SEO

IPC: H01L51/00 ,  C07D307/77 ,  C09K11/06

Abstract: A novel light-emitting element is provided. A light-emitting element with a long lifetime is provided. A light-emitting element with high emission efficiency is provided. 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 hole-transport material including an organic compound having a substituted or unsubstituted benzonaphthofuran skeleton and a substituted or unsubstituted amine skeleton is provided. A light-emitting element using the hole-transport material is provided. An organic compound in which an amine skeleton including two aromatic hydrocarbon groups having 6 to 60 carbon atoms is bonded to the 6- or 8-position of the benzonaphthofuran skeleton is provided.

公开(公告)号：US20210175435A1

公开(公告)日：2021-06-10

申请号：US16764715

申请日：2018-11-12

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroshi KADOMA ,  Tsunenori SUZUKI ,  Naoaki HASHIMOTO ,  Yusuke TAKITA ,  Satoshi SEO

IPC: H01L51/00 ,  C07D209/80 ,  C09K11/06

Abstract: An object is to provide a novel organic compound. Another object is to provide a novel light-emitting device. Another object is to provide a light-emitting device with favorable emission efficiency. Another object is to provide a light-emitting device with a favorable lifetime. Another object is to provide a light-emitting device with a low driving voltage. A dibenzo [c,g]carbazole derivative represented by the following general formula (G1) and a light-emitting device using it are provided. Note that at least one of R11 to R22 represents a substituent that has 14 to 60 carbon atoms in total and contains a condensed tricyclic to hexacyclic aromatic hydrocarbon skeleton, and the others independently represent any of hydrogen, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, and a substituted or unsubstituted aryl group having 6 to 25 carbon atoms.

公开(公告)号：US20210139445A1

公开(公告)日：2021-05-13

申请号：US17052937

申请日：2019-04-30

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kyoko TAKEDA ,  Hiroshi KADOMA ,  Yusuke TAKITA ,  Tsunenori SUZUKI ,  Satoshi SEO

IPC: C07D307/79 ,  H01L51/00

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, a light-emitting device 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 having 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 bonded to any one of a substituted or unsubstituted naphthobisbenzofuran skeleton, a substituted or unsubstituted naphthobisbenzothiophene skeleton, and a substituted or unsubstituted naphthobenzothienobenzofuran skeleton is provided.

公开(公告)号：US20190393420A1

公开(公告)日：2019-12-26

申请号：US16486181

申请日：2018-03-08

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kyoko TAKEDA ,  Harue OSAKA ,  Satoshi SEO ,  Tsunenori SUZUKI ,  Naoaki HASHIMOTO ,  Yusuke TAKITA

IPC: H01L51/00 ,  C07D493/04 ,  C09K11/06

Abstract: A novel organic compound is provided. An organic compound that emits light with high chromaticity is provided. An organic compound that emits blue light with high chromaticity is provided. An organic compound with high emission efficiency is provided. An organic compound having an excellent hole-transport property is provided. An organic compound having high reliability is provided. An organic compound that has a naphtho[2,3-b;7,6-b′]bisbenzofuran skeleton or a naphtho[2,3-b;7,6-b′]bisbenzothiophene skeleton and has a molecular weight of less than or equal to 5000 is provided. The present inventors have found that the organic compound is a significantly effective skeleton as a luminophor of a light-emitting element. The organic compound has high emission efficiency and exhibits favorable blue light emission; thus, a light-emitting element using the organic compound can be a blue light-emitting element with high emission efficiency.

公开(公告)号：US20190036036A1

公开(公告)日：2019-01-31

申请号：US16151659

申请日：2018-10-04

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kyoko Takeda ,  Harue OSAKA ,  Yusuke TAKITA ,  Naoaki HASHIMOTO ,  Tsunenori SUZUKI ,  Kunihiko SUZUKI ,  Satoshi SEO

IPC: H01L51/00 ,  C09K11/06 ,  H05B33/14 ,  C07D209/86 ,  H01L51/50

CPC classification number: H01L51/0072 ,  C07D209/86 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1011 ,  C09K2211/1018 ,  H01L51/0052 ,  H01L51/5012 ,  H01L51/5028 ,  H05B33/14

Abstract: To provide a novel fluorescent organic compound (a fluorescent compound). The organic compound is a substance that emits fluorescence and an organic compound (a host material) in which TTA can occur efficiently. In the organic compound, triplet excitons, which do not contribute to light emission, can be efficiently converted into singlet excitons. The use of such an organic compound can increase emission efficiency of a light-emitting element.

公开(公告)号：US20230263055A1

公开(公告)日：2023-08-17

申请号：US18138161

申请日：2023-04-24

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Hiroshi KADOMA ,  Hiroki SUZUKI ,  Yusuke TAKITA ,  Tsunenori SUZUKI ,  Satoshi SEO

IPC: H10K85/60 ,  C07D209/86 ,  C09K11/06

CPC classification number: H10K85/6572 ,  C07D209/86 ,  C09K11/06 ,  H10K85/615 ,  C09K2211/1018 ,  H10K50/11

Abstract: A novel organic compound is provided. That is, a novel organic compound that is effective in improving element characteristics and reliability is provided.
The organic compound includes an anthracene skeleton and a carbazole skeleton, and is represented by the following general formula (G1).




(In the formula, Ar represents a substituted or unsubstituted arylene group having 6 to 13 carbon atoms, and when the arylene group has substituents, the substituents may be bonded to each other to form a ring. Furthermore, Cz represents a substituted or unsubstituted carbazole skeleton. Furthermore, each of R1 to R9 and R11 to R17 independently represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 6 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 13 carbon atoms. Furthermore, at least one of the following pairs may form a fused ring: R12 and R13; R14 and R15; R15 and R16; or R16 and R17.

公开(公告)号：US20230150988A1

公开(公告)日：2023-05-18

申请号：US18096204

申请日：2023-01-12

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takuya Haruyama ,  Sachiko KAWAKAMI ,  Naoaki HASHIMOTO ,  Yusuke TAKITA ,  Tsunenori SUZUKI ,  Satoshi SEO

IPC: C07D407/12

CPC classification number: C07D407/12 ,  H10K50/11 ,  H10K77/10 ,  H10K50/84 ,  H10K85/633 ,  H10K85/6574 ,  H10K2101/10 ,  H10K50/171 ,  H10K50/16 ,  H10K50/15

Abstract: An organic compound has a benzonaphthofuran skeleton and is represented by General Formula (G1). In General Formula (G1), A represents a pyrene skeleton. In the case where the pyrene skeleton has a substituent, the substituent is a diarylamino group including two substituted or unsubstituted aryl groups each having 6 to 13 carbon atoms, a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, an alkyl group having 1 to 7 carbon atoms, a substituted or unsubstituted monocyclic saturated hydrocarbon group having 3 to 20 carbon atoms, or a substituted or unsubstituted polycyclic saturated hydrocarbon group having 7 to 10 carbon atoms. The two aryl groups of the diarylamino group may be the same or different. In X1 represented by General Formula (G1-1), one of R6 and R7 is bonded to N in General Formula (G1), and the other of R6 and R7 represents an alkyl group having 1 to 7 carbon atoms, a substituted or unsubstituted monocyclic saturated hydrocarbon group having 3 to 20 carbon atoms, or a substituted or unsubstituted polycyclic saturated hydrocarbon group having 7 to 10 carbon atoms.