公开(公告)号：US20220029111A1

公开(公告)日：2022-01-27

申请号：US17296659

申请日：2019-11-19

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi SEO ,  Nobuharu OHSAWA ,  Toshiki SASAKI ,  Hiromitsu KIDO

IPC: H01L51/00 ,  C09K11/06 ,  C09D11/50 ,  C09D11/52 ,  C09D11/037

Abstract: Provided is a composition for a light-emitting device, which enables manufacture of a highly productive light-emitting device while device characteristics and reliability of the light-emitting device are maintained. The composition for a light-emitting device is formed by mixing a plurality of organic compounds. A first organic compound having a diazine skeleton (preferably, a benzofurodiazine skeleton, a naphthofurodiazine skeleton, a phenanthrofurodiazine skeleton, a benzothienodiazine skeleton, a naphthothienodiazine skeleton, or a phenanthrothienodiazine skeleton) and a second organic compound that is an aromatic amine compound are mixed to form the composition for a light-emitting device.

公开(公告)号：US20210371427A1

公开(公告)日：2021-12-02

申请号：US17285251

申请日：2019-10-07

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Tomoya Yamaguchi ,  Hiromitsu KIDO ,  Hideko YOSHIZUMI ,  Satoshi SEO

IPC: C07D495/00 ,  H01L51/00

Abstract: An organic compound with high heat resistance is provided. A novel organic compound that can be used for a light-emitting device that emits red light or near-infrared light is provided. An organic compound represented by General Formula (G0) is provided. In General Formula (G0), Q represents oxygen or sulfur, Ar1 represents a substituted or unsubstituted fused aromatic ring, R1 and R2 each independently represent hydrogen or a group with 1 to 100, inclusive, carbon atoms in total, and at least one of R1 and R2 has a hole-transport skeleton or a fused ring.

公开(公告)号：US20210111352A1

公开(公告)日：2021-04-15

申请号：US17039623

申请日：2020-09-30

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Tomoya YAMAGUCHI ,  Hideko YOSHIZUMI ,  Yuta KAWANO ,  Hiromitsu KIDO ,  Satoshi SEO

IPC: H01L51/00 ,  H01L51/50

Abstract: A novel organic compound is provided. The organic compound is represented by General Formulae (G1), (u1), and (g1), where Ar represents a substituted or unsubstituted condensed aromatic ring, one of R1 and R2 represents a group represented by General Formula (u1), and any one of R30 to R40 represents a bond. In addition, A is a group represented by General Formula (g1), and B represents a substituted or unsubstituted phenyl group. Moreover, n is an integer of 0 to 2, and Q1 and Q2 independently represent an oxygen atom or a sulfur atom.

公开(公告)号：US20200185634A1

公开(公告)日：2020-06-11

申请号：US16791231

申请日：2020-02-14

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Naoaki HASHIMOTO ,  Tsunenori SUZUKI ,  Satoshi SEO ,  Hiromi SEO ,  Hiromitsu KIDO

IPC: H01L51/50 ,  H01L27/32

Abstract: A light-emitting element that includes a fluorescent material and has a high emission efficiency is provided. A light-emitting element in which a delayed fluorescence component due to TTA accounts for a high proportion of emissive components is provided. A novel light-emitting device with a high emission efficiency and a low power consumption is provided. A light-emitting element includes an anode, a cathode, and an EL layer. The EL layer includes a light-emitting layer including a host material and an electron-transport layer including a first material in contact with the light-emitting layer. The LUMO level of the first material is lower than that of the host material. The proportion of a delayed fluorescence component due to TTA is greater than or equal to 10 percent of the light emission from the EL layer. The proportion of the delayed fluorescence component due to TTA may be greater than or equal to 15 percent of the light emission.

公开(公告)号：US20200013967A1

公开(公告)日：2020-01-09

申请号：US16468608

申请日：2017-12-08

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yui YAMADA ,  Hideko YOSHIZUMI ,  Takeyoshi WATABE ,  Tatsuyoshi TAKAHASHI ,  Hiromitsu KIDO ,  Satoshi SEO

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

Abstract: A novel organometallic complex with high emission efficiency is provided. The organometallic complex, which is represented by General Formula (G1), includes iridium and a ligand including an aryl group including a cyano group at the 1-position of a benzimidazole skeleton and a phenyl group at the 2-position of the benzimidazole skeleton. (In the formula, Ar1 represents an aryl group having one or more substituents and 6 to 13 carbon atoms, and Ar1 includes at least one cyano group as the substituent. Each of R1 to R8 separately represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 6 carbon atoms, a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 12 carbon atoms, and a cyano group.)

公开(公告)号：US20180277783A1

公开(公告)日：2018-09-27

申请号：US15985748

申请日：2018-05-22

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Naoaki HASHIMOTO ,  Tsunenori SUZUKI ,  Satoshi SEO ,  Hiromi SEO ,  Hiromitsu KIDO

IPC: H01L51/50 ,  H01L51/00

Abstract: A light-emitting element that includes a fluorescent material and has a high emission efficiency is provided. A light-emitting element in which a delayed fluorescence component due to TTA accounts for a high proportion of emissive components is provided. A novel light-emitting device with a high emission efficiency and a low power consumption is provided. A light-emitting element includes an anode, a cathode, and an EL layer. The EL layer includes a light-emitting layer including a host material and an electron-transport layer including a first material in contact with the light-emitting layer. The LUMO level of the first material is lower than that of the host material. The proportion of a delayed fluorescence component due to TTA is greater than or equal to 10 percent of the light emission from the EL layer. The proportion of the delayed fluorescence component due to TTA may be greater than or equal to 15 percent of the light emission.

公开(公告)号：US20180182976A1

公开(公告)日：2018-06-28

申请号：US15843870

申请日：2017-12-15

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Miki KURIHARA ,  Hideko YOSHIZUMI ,  Hiromitsu KIDO ,  Tatsuyoshi TAKAHASHI ,  Satoshi SEO

IPC: H01L51/00 ,  C07D491/048 ,  C07D495/04

CPC classification number: H01L51/0072 ,  C07D491/048 ,  C07D495/04 ,  H01L51/0052 ,  H01L51/0054 ,  H01L51/0071 ,  H01L51/0073 ,  H01L51/0074 ,  H01L51/0085 ,  H01L51/5016 ,  H01L51/508

Abstract: A novel organic compound is provided. Moreover, a light-emitting element with high emission efficiency and a long lifetime is provided. A novel organic compound having a bicarbazole skeleton and a benzofuropyrimidine skeleton or a benzothienopyrimidine skeleton that includes at least one condensed ring or two condensed rings is provided. Moreover, a light-emitting element including the organic compound is provided.

公开(公告)号：US20180108847A1

公开(公告)日：2018-04-19

申请号：US15730065

申请日：2017-10-11

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroki Suzuki ,  Satoshi SEO ,  Tatsuyoshi TAKAHASHI ,  Hiromitsu KIDO

IPC: H01L51/00 ,  H01L51/52 ,  H01L51/50 ,  C07D405/10 ,  C07D409/10

Abstract: A novel organic compound is provided. That is, a novel organic compound that is effective in improving the element characteristics and reliability is provided. An organic compound has a benzonaphthofuran skeleton and a triazine skeleton and is represented by General Formula (G1) below. (In the formula, Ar1, Ar2, and Ar3 separately represent a substituted or unsubstituted phenylene group, and each of m and n is independently 0 or 1. R1 and R2 separately represent hydrogen, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, a substituted or unsubstituted fluorenyl group, a substituted or unsubstituted methylfluorenyl group, a substituted or unsubstituted dimethylfluorenyl group, a substituted or unsubstituted spirofluorenyl group, a substituted or unsubstituted naphthyl group, or a substituted or unsubstituted phenanthrenyl group. B1 to B3 separately represent nitrogen or carbon, and at least one of B1 to B3 represents nitrogen. In addition, A is represented by General Formula (G1-1). Any one of R3 to R12 is bonded to Ar1, and the others separately represent hydrogen, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, a substituted or unsubstituted fluorenyl group, a substituted or unsubstituted methylfluorenyl group, a substituted or unsubstituted dimethylfluorenyl group, a substituted or unsubstituted spirofluorenyl group, a substituted or unsubstituted naphthyl group, or a substituted or unsubstituted phenanthrenyl group. Furthermore, Q represents S or O.)