公开(公告)号：US10910579B2

公开(公告)日：2021-02-02

申请号：US16006024

申请日：2018-06-12

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiromi Nowatari ,  Satoshi Seo ,  Nobuharu Ohsawa ,  Takahiro Ushikubo ,  Tetsuo Tsutsui

IPC: H01L51/50 ,  B82Y10/00 ,  H01L51/52 ,  H01L51/00

Abstract: An object is to provide a light-emitting element capable of emitting light with a high luminance even at a low voltage, and having a long lifetime. The light-emitting element includes n EL layers between an anode and a cathode (n is a natural number of two or more), and also includes, between m-th EL layer from the anode and (m+1)-th EL layer (m is a natural number, 1≤m≤n−1), a first layer including a first donor material in contact with the m-th EL layer, a second layer including an electron-transport material and a second donor material in contact with the first layer, and a third layer including a hole-transport material and an acceptor material in contact with the second layer and the (m+1)-th EL layer.

公开(公告)号：US10181563B2

公开(公告)日：2019-01-15

申请号：US15436272

申请日：2017-02-17

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Harue Osaka ,  Takako Takasu ,  Hiroshi Kadoma ,  Yuko Kawata ,  Satoko Shitagaki ,  Hiromi Nowatari ,  Tsunenori Suzuki ,  Nobuharu Ohsawa ,  Satoshi Seo

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

Abstract: A novel substance with which an increase in life and emission efficiency of a light-emitting element can be achieved is provided. A carbazole compound having a structure represented by General Formula (G1) is provided. Note that a substituent which makes the HOMO level and the LUMO level of a compound in which a bond of the substituent is substituted with hydrogen deep and shallow, respectively is used as each of substituents in General Formula (G1) (R1, R2, Ar3, and α3). Further, a substituent which makes the band gap (Bg) and the T1 level of a compound in which a bond of the substituent is substituted with hydrogen wide and high is used as each of the substituents in General Formula (G1) (R1, R2, Ar3, and α3).

公开(公告)号：US10050221B2

公开(公告)日：2018-08-14

申请号：US15138565

申请日：2016-04-26

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiromi Nowatari ,  Satoshi Seo ,  Nobuharu Ohsawa ,  Takahiro Ushikubo ,  Tetsuo Tsutsui

IPC: H01L51/50 ,  B82Y10/00 ,  H01L51/52 ,  H01L51/00

Abstract: An object is to provide a light-emitting element capable of emitting light with a high luminance even at a low voltage, and having a long lifetime. The light-emitting element includes n EL layers between an anode and a cathode (n is a natural number of two or more), and also includes, between m-th EL layer from the anode and (m+1)-th EL layer (m is a natural number, 1≤m≤n−1), a first layer including a first donor material in contact with the m-th EL layer, a second layer including an electron-transport material and a second donor material in contact with the first layer, and a third layer including a hole-transport material and an acceptor material in contact with the second layer and the (m+1)-th EL layer.

公开(公告)号：US20140299861A1

公开(公告)日：2014-10-09

申请号：US14308310

申请日：2014-06-18

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Harue Osaka ,  Takako Takasu ,  Nobuharu Ohsawa ,  Hiromi Nowatari ,  Satoshi Seo

IPC: H01L51/00

CPC classification number: H01L51/0074 ,  C07D333/76 ,  C07D409/10 ,  H01L51/0059 ,  H01L51/006 ,  H01L51/0072 ,  H01L51/0081 ,  H01L51/0085 ,  H01L51/5016 ,  H01L51/5048 ,  H01L51/5088

Abstract: A substance having a hole-transport property and a wide band gap is provided. A heterocyclic compound represented by a general formula (G1) is provided. In the formula, α1 and α2 separately represent a substituted or unsubstituted arylene group having 6 to 13 carbon atoms; n and k separately represent 0 or 1; Q1 and Q2 separately represent sulfur or oxygen; and R1 to R22 separately represent hydrogen, an alkyl group having 1 to 12 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 14 carbon atoms.

Abstract translation: 提供具有空穴传输性和宽带隙的物质。 提供由通式（G1）表示的杂环化合物。 在该式中，α1和α2分别表示取代或未取代的碳原子数为6〜13的亚芳基。 n和k分别表示0或1; Q1和Q2分别代表硫或氧; R 1〜R 22分别表示氢，碳原子数1〜12的烷基或取代或未取代的碳原子数为6〜14的芳基。

公开(公告)号：US11139445B2

公开(公告)日：2021-10-05

申请号：US16558209

申请日：2019-09-02

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiromi Nowatari ,  Satoshi Seo ,  Nobuharu Ohsawa ,  Tetsuo Tsutsui

IPC: H01L51/50 ,  H01L51/00

Abstract: Light-emitting elements in which an increase of driving voltage can be suppressed are provided. Light-emitting devices whose power consumption is reduced by including such light-emitting elements are also provided. In a light-emitting element having an EL layer between an anode and a cathode, a first layer in which carriers can be produced is formed between the cathode and the EL layer and in contact with the cathode, a second layer which transfers electrons produced in the first layer is formed in contact with the first layer, and a third layer which injects the electrons received from the second layer into the EL layer is formed in contact with the second layer.

公开(公告)号：US20210151694A1

公开(公告)日：2021-05-20

申请号：US17137620

申请日：2020-12-30

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiromi Nowatari ,  Satoshi Seo ,  Harue Osaka ,  Takako Takasu

IPC: H01L51/00 ,  C09K11/06 ,  H05B33/14

Abstract: A composite material including an organic compound and an inorganic compound and having a high carrier-transport property is provided. A composite material having a high carrier-injection property to an organic compound is provided. A composite material in which light absorption due to charge transfer interaction is unlikely to occur is provided. A light-emitting element having high emission efficiency is provided by including the composite material. A light-emitting element having a low drive voltage is provided. A light-emitting element having a long lifetime is provided. A composite material including a heterocyclic compound having a dibenzothiophene skeleton or a dibenzofuran skeleton and an inorganic compound exhibiting an electron-accepting property with respect to the heterocyclic compound is provided.

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：US10121972B2

公开(公告)日：2018-11-06

申请号：US15819231

申请日：2017-11-21

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kaori Ogita ,  Hiromi Nowatari ,  Harue Osaka ,  Takahiro Ushikubo ,  Satoshi Seo ,  Takako Takasu

IPC: H01L51/54 ,  C09K11/06 ,  H01L51/00 ,  H05B33/14 ,  C07F15/00

Abstract: A composite material which includes an organic compound and an inorganic compound and has a high carrier-transport property is provided. A composite material having a good property of carrier injection into an organic compound is provided. A composite material in which light absorption due to charge-transfer interaction is unlikely to occur is provided. A composite material having a high visible-light-transmitting property is provided. A composite material including a hydrocarbon compound and an inorganic compound exhibiting an electron-accepting property with respect to the hydrocarbon compound is provided. The hydrocarbon compound has a substituent bonded to a naphthalene skeleton, a phenanthrene skeleton, or a triphenylene skeleton and has a molecular weight of 350 to 2000, and the substituent has one or more rings selected from a benzene ring, a naphthalene ring, a phenanthrene ring, and a triphenylene ring.

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。