公开(公告)号：US20180047911A1

公开(公告)日：2018-02-15

申请号：US15797463

申请日：2017-10-30

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroshi KADOMA ,  Satomi MITSUMORI ,  Yuko KAWATA ,  Takao HAMADA ,  Satoshi SEO

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

CPC classification number: H01L51/0067 ,  C09K11/06 ,  H01L51/0072 ,  H01L51/0073 ,  H01L51/0074 ,  H01L51/5056 ,  H01L51/5072 ,  H01L51/5088 ,  H01L51/5092

Abstract: A novel organic compound that can be used as a carrier-transport material, a host material, or a light-emitting material in a light-emitting element is provided. Specifically, an organic compound that can give a light-emitting element having favorable characteristics even when the organic compound is used in a light-emitting element emitting phosphorescence is provided. The organic compound has a bipyridine skeleton formed by two pyridine skeletons to each of which a dibenzothiophenyl group or a dibenzofuranyl group is bonded via an arylene group.

公开(公告)号：US20190074442A1

公开(公告)日：2019-03-07

申请号：US16182689

申请日：2018-11-07

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takao HAMADA ,  Hiromi SEO ,  Kanta ABE ,  Kyoko TAKEDA ,  Satoshi SEO

IPC: H01L51/00 ,  C09K11/02 ,  C09K11/06 ,  C07D209/86 ,  H01L51/50

Abstract: A light-emitting element having a long lifetime is provided. A light-emitting element exhibiting high emission efficiency in a high luminance region is provided. A light-emitting element includes a light-emitting layer between a pair of electrodes. The light-emitting layer contains a first organic compound, a second organic compound, and a phosphorescent compound. The first organic compound is represented by a general formula (G0). The molecular weight of the first organic compound is greater than or equal to 500 and less than or equal to 2000. The second organic compound is a compound having an electron-transport property. In the general formula (G0), Ar1 and Ar2 each independently represent a fluorenyl group, a spirofluorenyl group, or a biphenyl group, and Ar3 represents a substituent including a carbazole skeleton.

公开(公告)号：US20160343942A1

公开(公告)日：2016-11-24

申请号：US15228557

申请日：2016-08-04

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takao HAMADA ,  Hiromi SEO ,  Kanta ABE ,  Kyoko TAKEDA ,  Satoshi SEO

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

CPC classification number: H01L51/006 ,  C07D209/86 ,  C09K11/025 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1044 ,  C09K2211/185 ,  H01L51/0052 ,  H01L51/0056 ,  H01L51/0058 ,  H01L51/0061 ,  H01L51/0067 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/0085 ,  H01L51/5016 ,  H01L51/5024 ,  H01L51/5056 ,  H01L51/5072 ,  H01L2251/5384

Abstract: A light-emitting element having a long lifetime is provided. A light-emitting element exhibiting high emission efficiency in a high luminance region is provided. A light-emitting element includes a light-emitting layer between a pair of electrodes. The light-emitting layer contains a first organic compound, a second organic compound, and a phosphorescent compound. The first organic compound is represented by a general formula (G0). The molecular weight of the first organic compound is greater than or equal to 500 and less than or equal to 2000. The second organic compound is a compound having an electron-transport property. In the general formula (G0), Ar1 and Ar2 each independently represent a fluorenyl group, a spirofluorenyl group, or a biphenyl group, and Ar3 represents a substituent including a carbazole skeleton.

Abstract translation: 提供具有长寿命的发光元件。 提供了在高亮度区域表现出高发光效率的发光元件。 发光元件包括在一对电极之间的发光层。 发光层含有第一有机化合物，第二有机化合物和磷光化合物。 第一有机化合物由通式（G0）表示。 第一有机化合物的分子量大于或等于500且小于或等于2000.第二有机化合物是具有电子传输性质的化合物。 在通式（G0）中，Ar 1和Ar 2各自独立地表示芴基，螺芴基或联苯基，Ar 3表示包含咔唑骨架的取代基。

公开(公告)号：US20250120314A1

公开(公告)日：2025-04-10

申请号：US18916130

申请日：2024-10-15

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi SEO ,  Takao HAMADA ,  Tatsuyoshi TAKAHASHI ,  Yasushi KITANO ,  Hiroki SUZUKI ,  Hideko INOUE

IPC: H10K85/60 ,  C07D403/14 ,  H10K85/30

Abstract: To provide a light-emitting element with an improved reliability, a light-emitting element with a high current efficiency (or a high quantum efficiency), and a novel dibenzo[f,h]quinoxaline derivative that is favorably used in a light-emitting element which is one embodiment of the present invention. A light-emitting element includes an EL layer between an anode and a cathode. The EL layer includes a light-emitting layer; the light-emitting layer contains a first organic compound having an electron-transport property and a hole-transport property, a second organic compound having a hole-transport property, and a light-emitting substance; the combination of the first organic compound and the second organic compound forms an exciplex; the HOMO level of the first organic compound is lower than the HOMO level of the second organic compound; and a difference between the HOMO level of the first organic compound and the HOMO level of the second organic compound is less than or equal to 0.4 eV.

公开(公告)号：US20200006673A1

公开(公告)日：2020-01-02

申请号：US16570062

申请日：2019-09-13

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi Seo ,  Takao HAMADA ,  Tatsuyoshi TAKAHASHI ,  Yasushi KITANO ,  Hiroki SUZUKI ,  Hideko INOUE

IPC: H01L51/00 ,  C07D403/14

Abstract: To provide a light-emitting element with an improved reliability, a light-emitting element with a high current efficiency (or a high quantum efficiency), and a novel dibenzo[f,h]quinoxaline derivative that is favorably used in a light-emitting element which is one embodiment of the present invention. A light-emitting element includes an EL layer between an anode and a cathode. The EL layer includes a light-emitting layer; the light-emitting layer contains a first organic compound having an electron-transport property and a hole-transport property, a second organic compound having a hole-transport property, and a light-emitting substance; the combination of the first organic compound and the second organic compound forms an exciplex; the HOMO level of the first organic compound is lower than the HOMO level of the second organic compound; and a difference between the HOMO level of the first organic compound and the HOMO level of the second organic compound is less than or equal to 0.4 eV.

公开(公告)号：US20160075718A1

公开(公告)日：2016-03-17

申请号：US14844284

申请日：2015-09-03

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satomi Mitsumori ,  Yuko OHE ,  Takao HAMADA

IPC: C07D495/04 ,  H01L27/32 ,  C09K11/06 ,  H01L51/00 ,  C07D491/048

CPC classification number: C07D495/04 ,  C07D491/048 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1029 ,  C09K2211/1033 ,  C09K2211/1037 ,  C09K2211/1044 ,  H01L51/0067 ,  H01L51/0071 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/0085 ,  H01L51/5008 ,  H01L51/5016 ,  H01L51/5072 ,  H01L2251/5384 ,  H05B33/14 ,  H05B33/20

Abstract: An organic compound represented by a general formula (G1). In the general formula (G1), Het represents a substituted or unsubstituted π-electron deficient divalent heteroaromatic group having 4 to 36 carbon atoms, Ar1 and Ar2 each independently represent a substituted or unsubstituted arylene group having 6 to 25 carbon atoms, in and n each independently represent a natural number greater than or equal to 1 and less than or equal to 5, and A1 and A2 each independently represent any of a substituted or unsubstituted benzothienocarbazolyl group, a substituted or unsubstituted benzofurocarbazolyl group, and a substituted or unsubstituted indenocarbazolyl group.

Abstract translation: 由通式（G1）表示的有机化合物。 在通式（G1）中，Het表示具有4至36个碳原子的取代或未取代的不饱和二价杂芳族基团，Ar 1和Ar 2各自独立地表示取代或未取代的碳原子数6〜25的亚芳基， n各自独立地表示大于或等于1且小于或等于5的自然数，并且A1和A2各自独立地表示取代或未取代的苯并噻吩并恶唑基，取代或未取代的苯并呋咔唑基，以及取代或未取代的茚代咔唑基 组。

公开(公告)号：US20240057474A1

公开(公告)日：2024-02-15

申请号：US18376537

申请日：2023-10-04

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takao HAMADA ,  Hiromi SEO ,  Kanta ABE ,  Kyoko TAKEDA ,  Satoshi SEO

IPC: H10K85/60 ,  C07D209/86 ,  H10K50/11 ,  H10K50/12 ,  H10K85/30 ,  C09K11/02 ,  C09K11/06

CPC classification number: H10K85/633 ,  C07D209/86 ,  H10K50/11 ,  H10K50/12 ,  H10K85/342 ,  H10K85/636 ,  H10K85/654 ,  H10K85/6572 ,  H10K85/6576 ,  C09K11/025 ,  C09K11/06 ,  H10K50/15

Abstract: A light-emitting element having a long lifetime is provided. A light-emitting element exhibiting high emission efficiency in a high luminance region is provided. A light-emitting element includes a light-emitting layer between a pair of electrodes. The light-emitting layer contains a first organic compound, a second organic compound, and a phosphorescent compound. The first organic compound is represented by a general formula (G0). The molecular weight of the first organic compound is greater than or equal to 500 and less than or equal to 2000. The second organic compound is a compound having an electron-transport property. In the general formula (G0), Ar1 and Ar2 each independently represent a fluorenyl group, a spirofluorenyl group, or a biphenyl group, and Ar3 represents a substituent including a carbazole skeleton.

公开(公告)号：US20230165144A1

公开(公告)日：2023-05-25

申请号：US18094154

申请日：2023-01-06

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi Seo ,  Takao HAMADA ,  Tatsuyoshi TAKAHASHI ,  Yasushi KITANO ,  Hiroki SUZUKI ,  Hideko INOUE

IPC: H10K85/60 ,  C07D403/14

CPC classification number: H10K85/6572 ,  C07D403/14 ,  Y02P20/582 ,  H10K85/342

Abstract: To provide a light-emitting element with an improved reliability, a light-emitting element with a high current efficiency (or a high quantum efficiency), and a novel dibenzo[f,h]quinoxaline derivative that is favorably used in a light-emitting element which is one embodiment of the present invention. A light-emitting element includes an EL layer between an anode and a cathode. The EL layer includes a light-emitting layer; the light-emitting layer contains a first organic compound having an electron-transport property and a hole-transport property, a second organic compound having a hole-transport property, and a light-emitting substance; the combination of the first organic compound and the second organic compound forms an exciplex; the HOMO level of the first organic compound is lower than the HOMO level of the second organic compound; and a difference between the HOMO level of the first organic compound and the HOMO level of the second organic compound is less than or equal to 0.4 eV.

公开(公告)号：US20210328145A1

公开(公告)日：2021-10-21

申请号：US17345430

申请日：2021-06-11

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takao HAMADA ,  Hiromi SEO ,  Kanta ABE ,  Kyoko TAKEDA ,  Satoshi SEO

IPC: H01L51/00 ,  H01L51/50 ,  C07D209/86 ,  C09K11/02 ,  C09K11/06

Abstract: A light-emitting element having a long lifetime is provided. A light-emitting element exhibiting high emission efficiency in a high luminance region is provided. A light-emitting element includes a light-emitting layer between a pair of electrodes. The light-emitting layer contains a first organic compound, a second organic compound, and a phosphorescent compound. The first organic compound is represented by a general formula (G0). The molecular weight of the first organic compound is greater than or equal to 500 and less than or equal to 2000. The second organic compound is a compound having an electron-transport property. In the general formula (G0), Ar1 and Ar2 each independently represent a fluorenyl group, a spirofluorenyl group, or a biphenyl group, and Ar3 represents a substituent including a carbazole skeleton.

公开(公告)号：US20170117487A1

公开(公告)日：2017-04-27

申请号：US15297639

申请日：2016-10-19

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Sachiko Kawakami ,  Yoshimi ISHIGURO ,  Tatsuyoshi TAKAHASHI ,  Takao HAMADA

IPC: H01L51/00 ,  C07D403/10 ,  C09K11/02 ,  C07D409/10

CPC classification number: H01L51/0072 ,  C07D403/10 ,  C07D409/10 ,  C09K11/025 ,  H01L27/3244 ,  H01L27/3255 ,  H01L51/0074 ,  H01L51/5012 ,  H01L51/5056 ,  H01L51/5072

Abstract: A novel heterocyclic compound is provided. In particular, a novel heterocyclic compound which can improve the element characteristics of a light-emitting element is provided. A novel light-emitting element with high emission efficiency and high heat resistance is provided. A heterocyclic compound represented by General Formula (G1). A represents any of a dibenzothiophenyl group, a dibenzofuranyl group, and a carbazolyl group. DBq represents a dibenzo[f,h]quinoxalinyl group. In addition, n is 0 or 1. Each of Ar1 to Ar4 independently represents a substituted or unsubstituted arylene group having 6 to 10 carbon atoms. In Ar1 to Ar4, the adjacent arylene groups may be bonded to each other to form a ring. When the adjacent arylene groups in Ar1 to Ar4 form a fluorene skeleton, the fluorene skeleton may have a substituent.