公开(公告)号：US11043637B2

公开(公告)日：2021-06-22

申请号：US15999406

申请日：2018-08-20

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takao Hamada ,  Hiromi Seo ,  Kanta Abe ,  Kyoko Takeda ,  Satoshi Seo

IPC: H01L51/50 ,  H01L51/00 ,  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：US10897012B2

公开(公告)日：2021-01-19

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: H01L51/50 ,  H01L51/00 ,  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：US10749112B2

公开(公告)日：2020-08-18

申请号：US16385472

申请日：2019-04-16

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi Seo ,  Tatsuyoshi Takahashi ,  Kyoko Takeda ,  Kanta Abe ,  Hiroki Suzuki

IPC: H01L51/00 ,  H01L27/32 ,  C07F15/00 ,  C09K11/06 ,  G06F3/041 ,  G06F3/045 ,  H01L51/50 ,  H05B33/14 ,  H05B33/20

Abstract: A light-emitting element with a lower voltage and higher emission efficiency is provided. The light-emitting element includes a first organic compound, a second organic compound, and a guest material. The LUMO level of the first organic compound is lower than the LUMO level of the second organic compound, and a difference between them is larger than 0 eV and smaller than or equal to 0.5 eV. Furthermore, the HOMO level of the first organic compound is lower than the HOMO level of the second organic compound. The guest material has a function of converting triplet excitation energy into light emission. The first organic compound and the second organic compound form an exciplex.

公开(公告)号：US10270039B2

公开(公告)日：2019-04-23

申请号：US15812703

申请日：2017-11-14

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi Seo ,  Tatsuyoshi Takahashi ,  Kyoko Takeda ,  Kanta Abe ,  Hiroki Suzuki

IPC: G06F3/045 ,  H01L51/00 ,  C07F15/00 ,  C09K11/06 ,  G06F3/041 ,  H01L51/50 ,  H05B33/14 ,  H05B33/20 ,  H01L27/32

Abstract: A light-emitting element with a lower voltage and higher emission efficiency is provided. The light-emitting element includes a first organic compound, a second organic compound, and a guest material. The LUMO level of the first organic compound is lower than the LUMO level of the second organic compound, and a difference between them is larger than 0 eV and smaller than or equal to 0.5 eV. Furthermore, the HOMO level of the first organic compound is lower than the HOMO level of the second organic compound. The guest material has a function of converting triplet excitation energy into light emission. The first organic compound and the second organic compound form an exciplex.

公开(公告)号：US20140034928A1

公开(公告)日：2014-02-06

申请号：US13957023

申请日：2013-08-01

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoko Shitagaki ,  Takao Hamada ,  Kanta Abe ,  Satoshi Seo

IPC: H01L51/50 ,  H01L51/00

CPC classification number: H01L51/0061 ,  C07D209/86 ,  C07D409/10 ,  C09K11/06 ,  C09K2211/185 ,  H01L51/0052 ,  H01L51/0058 ,  H01L51/006 ,  H01L51/0067 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/0085 ,  H01L51/5016 ,  H01L51/5056 ,  H01L51/5088 ,  H01L2251/5384

Abstract: A novel organic compound having a high hole-transport property is provided. A long-lifetime light-emitting element is provided. An organic compound represented by General Formula (G0) is provided. In General Formula (G0), Ar1 represents a substituted or unsubstituted naphthyl group, Ar2 represents a substituted or unsubstituted carbazolyl group, Ar3 represents a substituted or unsubstituted fluorenyl group or a substituted or unsubstituted spirofluorenyl group, and α1 and α2 each independently represent a substituted or unsubstituted phenylene group or a substituted or unsubstituted biphenyldiyl group.

Abstract translation: 提供了具有高空穴传输性能的新型有机化合物。 提供长寿命的发光元件。 提供由通式（G0）表示的有机化合物。 在通式（G0）中，Ar 1表示取代或未取代的萘基，Ar 2表示取代或未取代的咔唑基，Ar 3表示取代或未取代的芴基或取代或未取代的芴基，α1和α2各自独立地表示取代 或未取代的亚苯基或取代或未取代的联苯二基。

公开(公告)号：US11974447B2

公开(公告)日：2024-04-30

申请号：US17974143

申请日：2022-10-26

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi Seo ,  Hiromi Seo ,  Kunihiko Suzuki ,  Kanta Abe ,  Yuji Iwaki ,  Naoaki Hashimoto ,  Tsunenori Suzuki

IPC: H01L51/50 ,  H01L27/32 ,  H01L51/00 ,  H01L51/52 ,  H05B33/20 ,  H10K50/11 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17 ,  H10K50/81 ,  H10K50/82 ,  H10K59/00 ,  H10K59/12 ,  H10K85/30 ,  H10K101/40

CPC classification number: H10K50/16 ,  H10K50/11 ,  H10K50/15 ,  H10K50/171 ,  H10K50/81 ,  H10K50/82 ,  H10K59/00 ,  H10K85/321 ,  H10K2101/40

Abstract: A novel light-emitting device is provided. A light-emitting device with high emission efficiency is provided. A light-emitting device with a long lifetime is provided. A light-emitting device with low driving voltage is provided. The light-emitting device includes an anode, a cathode, and an EL layer between the anode and the cathode. The EL layer includes a hole-injection layer, a light-emitting layer, and an electron-transport layer. The hole-injection layer is positioned between the anode and the light-emitting layer. The electron-transport layer is positioned between the light-emitting layer and the cathode. The hole-injection layer contains a first substance and a second substance. The first substance is an organic compound which has a hole-transport property and a HOMO level higher than or equal to −5.7 eV and lower than or equal to −5.4 eV. The second substance exhibits an electron-accepting property with respect to the first substance. The electron-transport layer contains a material whose resistance decreases with current flowing therethrough.

公开(公告)号：US20190013468A1

公开(公告)日：2019-01-10

申请号：US15999406

申请日：2018-08-20

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：US10069076B2

公开(公告)日：2018-09-04

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: H01L51/50 ,  H01L51/00 ,  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：US09412962B2

公开(公告)日：2016-08-09

申请号：US13957082

申请日：2013-08-01

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takao Hamada ,  Hiromi Seo ,  Kanta Abe ,  Kyoko Takeda ,  Satoshi Seo

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

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中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：US11968889B2

公开(公告)日：2024-04-23

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: H01L51/50 ,  C07D209/86 ,  C09K11/02 ,  C09K11/06 ,  H10K50/11 ,  H10K50/12 ,  H10K85/30 ,  H10K85/60 ,  H10K50/15 ,  H10K50/16 ,  H10K101/00 ,  H10K101/10

CPC classification number: H10K85/633 ,  C07D209/86 ,  C09K11/025 ,  C09K11/06 ,  H10K50/11 ,  H10K50/12 ,  H10K85/342 ,  H10K85/636 ,  H10K85/654 ,  H10K85/6572 ,  H10K85/6576 ,  C09K2211/1007 ,  C09K2211/1044 ,  C09K2211/185 ,  H10K50/15 ,  H10K50/16 ,  H10K85/615 ,  H10K85/624 ,  H10K85/626 ,  H10K2101/10 ,  H10K2101/90

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 (GO). 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 (GO), 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.