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：US20170288153A1

公开(公告)日：2017-10-05

申请号：US15623799

申请日：2017-06-15

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi SEO ,  Harue OSAKA ,  Sachiko KAWAKAMI ,  Nobuharu OHSAWA ,  Tsunenori SUZUKI ,  Hiromi NOWATARI ,  Hiroki SUZUKI ,  Kyoko TAKEDA

IPC: H01L51/00

CPC classification number: H01L51/0074 ,  C07D405/04 ,  C07D405/14 ,  C07D409/04 ,  C07D409/14 ,  H01L51/0052 ,  H01L51/0054 ,  H01L51/006 ,  H01L51/0072 ,  H01L51/0073 ,  H01L51/0085 ,  H01L51/5012 ,  H01L51/5056

Abstract: An object is to provide a light-emitting element with high emission efficiency which includes a novel carbazole derivative that has a wide energy gap and can be used for a transport layer or a host material in a light-emitting element. A carbazole derivative in which the 4-position of dibenzothiophene or dibenzofuran is bonded to the 2- or 3-position of carbazole has been able to be provided by use of the carbazole derivative. Further, a light-emitting element having high emission efficiency has been able to be provided by use of the carbazole derivative.

公开(公告)号：US20170062735A1

公开(公告)日：2017-03-02

申请号：US15251364

申请日：2016-08-30

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kyoko TAKEDA ,  Hiroshi KADOMA ,  Tsunenori SUZUKI ,  Naoaki HASHIMOTO ,  Satoshi SEO

IPC: H01L51/00 ,  C09K11/02 ,  C07D209/80 ,  C07D209/86 ,  C09K11/06

CPC classification number: H01L51/0072 ,  C07D209/80 ,  C07D209/86 ,  C09K11/02 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1011 ,  C09K2211/1029 ,  H01L51/0055 ,  H01L51/5012 ,  Y02P20/582

Abstract: A novel benzotriphenylene compound that can be suitably used as a host material in the case where a light-emitting substance is a fluorescent material. The benzotriphenylene compound is represented by General Formula (G1-1). In General Formula (G1-1), A represents a condensed ring. Each of R1 to R9 and R11 to R14 independently represents 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 13 carbon atoms. Ar represents an arylene group having 6 to 13 carbon atoms.