公开(公告)号：US20160164035A1

公开(公告)日：2016-06-09

申请号：US15041329

申请日：2016-02-11

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiromi SEO ,  Satoko SHITAGAKI ,  Satoshi SEO ,  Takahiro USHIKUBO ,  Toshiki SASAKI ,  Shogo UESAKA

IPC: H01L51/52 ,  H01L51/50

CPC classification number: H01L51/5262 ,  C09K11/06 ,  H01L27/3206 ,  H01L51/0052 ,  H01L51/0058 ,  H01L51/006 ,  H01L51/0061 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/0085 ,  H01L51/5016 ,  H01L51/5028 ,  H01L51/504 ,  H01L51/5056 ,  H01L51/5072 ,  H01L51/5088 ,  H01L51/5092 ,  H01L51/5206 ,  H01L51/5221 ,  H01L51/5265 ,  H01L51/5278 ,  H01L2251/308 ,  H01L2251/5384

Abstract: A light-emitting element having high external quantum efficiency is provided. A light-emitting element having a long lifetime is provided. A light-emitting element includes a light-emitting layer between a pair of electrodes. The light-emitting layer contains at least a phosphorescent compound, a first organic compound (host material) having an electron-transport property, and a second organic compound (assist material) having a hole-transport property. The light-emitting layer has a stacked-layer structure including a first light-emitting layer and a second light-emitting layer, and the first light-emitting layer contains a higher proportion of the second organic compound than the second light-emitting layer. In the light-emitting layer (the first light-emitting layer and the second light-emitting layer), a combination of the first organic compound and the second organic compound forms an exciplex.

公开(公告)号：US20140061604A1

公开(公告)日：2014-03-06

申请号：US13795712

申请日：2013-03-12

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiromi SEO ,  Satoko SHITAGAKI ,  Satoshi SEO ,  Takahiro USHIKUBO ,  Toshiki SASAKI ,  Shogo UESAKA

IPC: H01L51/50

CPC classification number: H01L51/5016 ,  C07F15/0033 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1044 ,  C09K2211/185 ,  H01L27/3206 ,  H01L27/3209 ,  H01L51/0051 ,  H01L51/0052 ,  H01L51/0054 ,  H01L51/0058 ,  H01L51/0059 ,  H01L51/006 ,  H01L51/0061 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/0085 ,  H01L51/5004 ,  H01L51/5012 ,  H01L51/5028 ,  H01L51/504 ,  H01L51/5265 ,  H01L2251/5376

Abstract: A light-emitting element having high external quantum efficiency is provided. A light-emitting element having a long lifetime is provided. A light-emitting layer is provided between a pair of electrodes. The light-emitting layer is a stack of a first light-emitting layer, which contains a first phosphorescent compound, a first organic compound having an electron-transport property, and a second organic compound having a hole-transport property and is provided on the anode side, and a second light-emitting layer, which contains at least a second phosphorescent compound and the first organic compound having an electron-transport property. A combination of the first organic compound and the second organic compound forms an exciplex.

Abstract translation: 提供具有高外部量子效率的发光元件。 提供具有长寿命的发光元件。 在一对电极之间设置有发光层。 发光层是包含第一磷光化合物，具有电子传输性的第一有机化合物和具有空穴传输性的第二有机化合物的第一发光层的叠层，并且设置在第一发光层上 阳极侧和第二发光层，其含有至少第二磷光化合物和具有电子传输性质的第一有机化合物。 第一有机化合物和第二有机化合物的组合形成高分子复合物。

公开(公告)号：US20180019445A1

公开(公告)日：2018-01-18

申请号：US15718498

申请日：2017-09-28

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Tsunenori Suzuki ,  Shogo UESAKA ,  Ryohei YAMAOKA ,  Satoshi SEO

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

CPC classification number: H01L51/5278 ,  H01L27/3209 ,  H01L27/3211 ,  H01L27/322 ,  H01L51/0052 ,  H01L51/0054 ,  H01L51/0058 ,  H01L51/006 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/0077 ,  H01L51/0085 ,  H01L51/0091 ,  H01L51/5012 ,  H01L2251/53

Abstract: A tandem light-emitting element in which generation of crosstalk can be suppressed even when the element is applied to a high-definition display is provided. In the tandem light-emitting element, a layer in contact the anode side of an intermediate layer contains 2,9-bis(naphthalen-2-yl)-4,7-diphenyl-1,10-phenanthroline (abbreviation: NBPhen).

公开(公告)号：US20170256742A1

公开(公告)日：2017-09-07

申请号：US15447695

申请日：2017-03-02

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiromi SEO ,  Satoko SHITAGAKI ,  Satoshi SEO ,  Takahiro USHIKUBO ,  Toshiki SASAKI ,  Shogo UESAKA

IPC: H01L51/00

CPC classification number: H01L51/5262 ,  C09K11/06 ,  H01L27/3206 ,  H01L51/0052 ,  H01L51/0058 ,  H01L51/006 ,  H01L51/0061 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/0085 ,  H01L51/5016 ,  H01L51/5028 ,  H01L51/504 ,  H01L51/5056 ,  H01L51/5072 ,  H01L51/5088 ,  H01L51/5092 ,  H01L51/5206 ,  H01L51/5221 ,  H01L51/5265 ,  H01L51/5278 ,  H01L2251/308 ,  H01L2251/5384

Abstract: A light-emitting element having high external quantum efficiency is provided. A light-emitting element having a long lifetime is provided. A light-emitting element includes a light-emitting layer between a pair of electrodes. The light-emitting layer contains at least a phosphorescent compound, a first organic compound (host material) having an electron-transport property, and a second organic compound (assist material) having a hole-transport property. The light-emitting layer has a stacked-layer structure including a first light-emitting layer and a second light-emitting layer, and the first light-emitting layer contains a higher proportion of the second organic compound than the second light-emitting layer. In the light-emitting layer (the first light-emitting layer and the second light-emitting layer), a combination of the first organic compound and the second organic compound forms an exciplex.

公开(公告)号：US20160315275A1

公开(公告)日：2016-10-27

申请号：US15204081

申请日：2016-07-07

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiromi SEO ,  Satoko SHITAGAKI ,  Satoshi SEO ,  Takahiro USHIKUBO ,  Toshiki SASAKI ,  Shogo UESAKA

IPC: H01L51/00 ,  C07F15/00 ,  C09K11/06 ,  H01L51/50 ,  H01L51/52

CPC classification number: H01L51/5016 ,  C07F15/0033 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1044 ,  C09K2211/185 ,  H01L27/3206 ,  H01L27/3209 ,  H01L51/0051 ,  H01L51/0052 ,  H01L51/0054 ,  H01L51/0058 ,  H01L51/0059 ,  H01L51/006 ,  H01L51/0061 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/0085 ,  H01L51/5004 ,  H01L51/5012 ,  H01L51/5028 ,  H01L51/504 ,  H01L51/5265 ,  H01L2251/5376

Abstract: A light-emitting element having high external quantum efficiency is provided. A light-emitting element having a long lifetime is provided. A light-emitting layer is provided between a pair of electrodes. The light-emitting layer is a stack of a first light-emitting layer, which contains at least a first phosphorescent compound, a first organic compound having an electron-transport property, and a second organic compound having a hole-transport property and is provided on the anode side, and a second light-emitting layer, which contains at least a second phosphorescent compound and the first organic compound having an electron-transport property. A combination of the first organic compound and the second organic compound forms an exciplex.

Abstract translation: 提供具有高外部量子效率的发光元件。 提供具有长寿命的发光元件。 在一对电极之间设置有发光层。 发光层是含有至少第一磷光化合物，具有电子传输性的第一有机化合物和具有空穴传输性的第二有机化合物的第一发光层的叠层体， 以及包含至少第二磷光化合物和具有电子传输性的第一有机化合物的第二发光层。 第一有机化合物和第二有机化合物的组合形成高分子复合物。

公开(公告)号：US20160043146A1

公开(公告)日：2016-02-11

申请号：US14820814

申请日：2015-08-07

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shogo UESAKA ,  Nobuharu OHSAWA

IPC: H01L27/32 ,  H01L51/50

CPC classification number: H01L27/3209 ,  H01L27/3206 ,  H01L27/322 ,  H01L51/5016 ,  H01L51/5024 ,  H01L51/504 ,  H01L51/5056 ,  H01L51/5088 ,  H01L51/5206 ,  H01L51/5218 ,  H01L51/5234 ,  H01L51/5268 ,  H01L2251/5376

Abstract: A light-emitting device in which different electrodes in a work function are used in a first light-emitting element and a second light-emitting element are provided. A light-emitting device includes a first light-emitting element and a second light-emitting element. The first light-emitting element includes a first electrode, an EL layer, and a second electrode in this order. The second light-emitting element includes a third electrode, the EL layer, and the second electrode in this order. The EL layer includes a first light-emitting layer, a layer, and a second light-emitting layer in this order. The structure of the first light-emitting layer is different from the structure of the second light-emitting layer. The first light-emitting element and the second light-emitting element are different in a carrier-injection property.

Abstract translation: 提供了在第一发光元件和第二发光元件中使用工作功能中的不同电极的发光器件。 发光装置包括第一发光元件和第二发光元件。 第一发光元件依次包括第一电极，EL层和第二电极。 第二发光元件依次包括第三电极，EL层和第二电极。 EL层依次包括第一发光层，第一发光层和第二发光层。 第一发光层的结构与第二发光层的结构不同。 第一发光元件和第二发光元件在载流子注入性方面是不同的。

公开(公告)号：US20130240851A1

公开(公告)日：2013-09-19

申请号：US13790604

申请日：2013-03-08

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Hiromi SEO ,  Satoko SHITAGAKI ,  Satoshi SEO ,  Takahiro USHIKUBO ,  Toshiki SASAKI ,  Shogo UESAKA

IPC: H01L51/52

CPC classification number: H01L51/5262 ,  C09K11/06 ,  H01L27/3206 ,  H01L51/0052 ,  H01L51/0058 ,  H01L51/006 ,  H01L51/0061 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/0085 ,  H01L51/5016 ,  H01L51/5028 ,  H01L51/504 ,  H01L51/5056 ,  H01L51/5072 ,  H01L51/5088 ,  H01L51/5092 ,  H01L51/5206 ,  H01L51/5221 ,  H01L51/5265 ,  H01L51/5278 ,  H01L2251/308 ,  H01L2251/5384

Abstract: A light-emitting element having high external quantum efficiency is provided. A light-emitting element having a long lifetime is provided. A light-emitting element includes a light-emitting layer between a pair of electrodes. The light-emitting layer contains at least a phosphorescent compound, a first organic compound (host material) having an electron-transport property, and a second organic compound (assist material) having a hole-transport property. The light-emitting layer has a stacked-layer structure including a first light-emitting layer and a second light-emitting layer, and the first light-emitting layer contains a higher proportion of the second organic compound than the second light-emitting layer. In the light-emitting layer (the first light-emitting layer and the second light-emitting layer), a combination of the first organic compound and the second organic compound forms an exciplex.