公开(公告)号：US11489133B2

公开(公告)日：2022-11-01

申请号：US16897709

申请日：2020-06-10

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

IPC: H01L51/50 ,  H01L51/00 ,  H01L51/52 ,  H01L27/32

Abstract: A novel light-emitting device is provided. A light-emitting device with high emission efficiency is provided. A light-emitting device with along 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：US10355219B2

公开(公告)日：2019-07-16

申请号：US15230693

申请日：2016-08-08

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

IPC: H01L51/50 ,  H01L51/00 ,  C07D409/10 ,  C07D209/86 ,  C09K11/06

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.

公开(公告)号：US09419237B2

公开(公告)日：2016-08-16

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 ,  C07D409/10 ,  C07D209/86

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：US20140034929A1

公开(公告)日：2014-02-06

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

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。