公开(公告)号：US10833282B2

公开(公告)日：2020-11-10

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 ,  Tsuneori Suzuki ,  Hiromi Nowatari ,  Hiroki Suzuki ,  Kyoko Takeda

IPC: H01L51/00 ,  C07D405/04 ,  C07D405/14 ,  C07D409/04 ,  C07D409/14 ,  H01L51/50

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：US10559762B2

公开(公告)日：2020-02-11

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

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：US09735372B2

公开(公告)日：2017-08-15

申请号：US14745804

申请日：2015-06-22

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi Seo ,  Harue Osaka ,  Sachiko Kawakami ,  Nobuharu Ohsawa ,  Tsunenori Suzuki ,  Hiromi Nowatari ,  Hiroki Suzuki ,  Kyoko Takeda

IPC: C09K11/06 ,  H01L51/50 ,  C07D409/14 ,  C07D403/10 ,  C07D209/82 ,  C07D209/86 ,  H01L51/00 ,  C07D405/04 ,  C07D405/14 ,  C07D409/04

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：US20150287934A1

公开(公告)日：2015-10-08

申请号：US14745804

申请日：2015-06-22

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 ,  C07D405/04 ,  C07D409/04 ,  C07D409/14 ,  C07D405/14

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.

Abstract translation: 本发明的目的是提供一种具有高发光效率的发光元件，其包括具有宽能隙的新型咔唑衍生物，可用于发光元件中的输送层或主体材料。 通过使用咔唑衍生物，能够使二苯并噻吩或二苯并呋喃的4-位与咔唑的2-或3-位相连的咔唑衍生物。 此外，通过使用咔唑衍生物，能够提供发光效率高的发光元件。

公开(公告)号：US20140284578A1

公开(公告)日：2014-09-25

申请号：US14220398

申请日：2014-03-20

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kyoko Takeda ,  Satoshi Seo ,  Hiromi Seo ,  Tatsuyoshi Takahashi

IPC: H01L51/00 ,  H01L51/50

CPC classification number: H01L51/006 ,  H01L51/0052 ,  H01L51/0061 ,  H01L51/0073 ,  H01L51/0074 ,  H01L51/5016

Abstract: An organic compound having a low HOMO level and a high hole-transport property is provided. The organic compound is represented by Formula (G1), where Ar1 represents a substituted or unsubstituted fluorenyl group, Ar2 represents a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, and A1 represents any one of a substituted or unsubstituted dibenzofuranyl group and a substituted or unsubstituted dibenzothiophenyl group. The low HOMO level and the high hole-transport property of the organic compound allow the formation of an exciplex with another organic compound, which leads to a highly efficient light-emitting element in the presence of a phosphorescent compound due to the effective overlapping between the emission of the exciplex and the longest absorption band of the phosphorescent compound.

Abstract translation: 提供具有低HOMO水平和高空穴传输性能的有机化合物。 有机化合物由式（G1）表示，其中Ar1表示取代或未取代的芴基，Ar2表示取代或未取代的碳原子数6〜13的芳基，A1表示取代或未取代的二苯并呋喃基和 取代或未取代的二苯并噻吩基。 有机化合物的低HOMO水平和高空穴传输性能允许与另一有机化合物形成激元复合物，这导致在磷光化合物存在下的高效发光元件，这是由于 磷光复合物的发射和磷光化合物的最长吸收带。