公开(公告)号：US20190040009A1

公开(公告)日：2019-02-07

申请号：US16139412

申请日：2018-09-24

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroko Nomura ,  Harue OSAKA ,  Takahiro USHIKUBO ,  Sachiko KAWAKAMI ,  Satoshi SEO ,  Satoko SHITAGAKI

IPC: C07D209/86 ,  H01L51/00

Abstract: To provide a light-emitting element having high luminous efficiency and to provide a light-emitting device and an electronic device which consumes low power and is driven at low voltage, a carbazole derivative represented by the general formula (1) is provided. In the formula, α1, α2, α3, and α4 each represent an arylene group having less than or equal to 13 carbon atoms; Ar1 and Ar2 each represent an aryl group having less than or equal to 13 carbon atoms; R1 represents any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group; and R2 represents any of an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group. In addition, l, m, and n are each independently 0 or 1.

公开(公告)号：US20180301650A1

公开(公告)日：2018-10-18

申请号：US16006024

申请日：2018-06-12

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiromi NOWATARI ,  Satoshi SEO ,  Nobuharu OHSAWA ,  Takahiro USHIKUBO ,  Tetsuo TSUTSUI

IPC: H01L51/50 ,  H01L51/52

Abstract: An object is to provide a light-emitting element capable of emitting light with a high luminance even at a low voltage, and having a long lifetime. The light-emitting element includes n EL layers between an anode and a cathode (n is a natural number of two or more), and also includes, between m-th EL layer from the anode and (m+1)-th EL layer (m is a natural number, 1≤m≤n−1), a first layer including a first donor material in contact with the m-th EL layer, a second layer including an electron-transport material and a second donor material in contact with the first layer, and a third layer including a hole-transport material and an acceptor material in contact with the second layer and the (m+1)-th EL layer.

公开(公告)号：US20180269409A1

公开(公告)日：2018-09-20

申请号：US15981060

申请日：2018-05-16

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hideko Inoue ,  Tomoya YAMAGUCHI ,  Hiromi SEO ,  Tatsuyoshi TAKAHASHI ,  Satoshi SEO

IPC: H01L51/00 ,  C07F15/00

CPC classification number: H01L51/0085 ,  C07F15/0033

Abstract: An organometallic iridium complex that has high emission efficiency and a long lifetime and emits deep red light (emission wavelength: around 700 nm) is provided. The organometallic iridium complex has a ligand that is represented by General Formula (G0) and has at least a dimethyl phenyl group and a quinoxaline skeleton.In the formula, R1 to R3 separately represent an alkyl group having 1 to 6 carbon atoms, a phenyl group, or a phenyl group having an alkyl group having 1 to 6 carbon atoms as a substituent.

公开(公告)号：US20180261788A1

公开(公告)日：2018-09-13

申请号：US15911225

申请日：2018-03-05

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takahiro ISHISONE ,  Satoshi SEO ,  Yusuke NONAKA ,  Nobuharu OHSAWA

IPC: H01L51/50 ,  H01L51/00

Abstract: Provided is a light-emitting element which includes a first electrode, a second electrode over the first electrode, and first and second light-emitting layers therebetween. The first light-emitting layer contains a first host material and a first light-emitting material, and the second light-emitting layer contains a second host material and a second light-emitting material. The first light-emitting material is a fluorescent material, and the second light-emitting material is a phosphorescent material. The level of the lowest triplet excited state (T1 level) of the first light-emitting material is higher than the T1 level of the first host material. A light-emitting device, an electronic device, and a lighting device including the light-emitting element are further provided.

公开(公告)号：US20170365782A1

公开(公告)日：2017-12-21

申请号：US15673460

申请日：2017-08-10

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Harue OSAKA ,  Satoko SHITAGAKI ,  Tsunenori SUZUKI ,  Nobuharu OHSAWA ,  Sachiko KAWAKAMI ,  Satoshi SEO

IPC: H01L51/00 ,  C09B57/00 ,  H05B33/20 ,  C07C209/10 ,  H05B33/14 ,  H01L51/50 ,  C07C2603/18

Abstract: An object is to provide a light-emitting element having high light-emission efficiency by provision of a novel fluorene derivative as represented by General Formula (G1) below. In the formula, R1 to R8 independently represent any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, or a substituted or unsubstituted biphenyl group. Further, α1 to α4 independently represent any of a substituted or unsubstituted arylene group having 6 to 12 carbon atoms. Furthermore, Ar1 and Ar2 independently represent any of an aryl group having 6 to 13 carbon atoms in a ring and Ar3 represents an alkyl group having 1 to 6 carbon atoms or a substituted or unsubstituted aryl group having 6 to 12 carbon atoms. J, k, m, and n each independently represent 0 or 1.

公开(公告)号：US20170309852A1

公开(公告)日：2017-10-26

申请号：US15491536

申请日：2017-04-19

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi SEO ,  Shogo UESAKA ,  Toshiki SASAKI ,  Nobuharu OHSAWA

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

CPC classification number: H01L51/5004 ,  H01L27/3262 ,  H01L51/0052 ,  H01L51/0054 ,  H01L51/0058 ,  H01L51/006 ,  H01L51/0061 ,  H01L51/0072 ,  H01L51/0073 ,  H01L51/5012 ,  H01L51/5206 ,  H01L51/5218 ,  H01L51/5221 ,  H01L2251/301 ,  H01L2251/303 ,  H01L2251/308 ,  H01L2251/552

Abstract: To provide a light-emitting element with low drive voltage. The light-emitting element includes a first electrode, a second electrode, and an EL layer. The first electrode includes a first conductive layer and a second conductive layer including a region in contact with the first conductive layer. The first conductive layer has a function of reflecting light, and the second conductive layer has a function of transmitting light. The second conductive layer includes an oxide containing In and M (M represents one or more of Al, Si, Ti, Ga, Y, Zr, La, Ce, Nd, and Hf). The EL layer includes an organic acceptor material in a region in contact with the second conductive layer.

公开(公告)号：US20170279063A1

公开(公告)日：2017-09-28

申请号：US15492439

申请日：2017-04-20

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi SEO ,  Satoko SHITAGAKI ,  Nobuharu OHSAWA ,  Hideko INOUE ,  Kunihiko SUZUKI

IPC: H01L51/50 ,  C07D409/10

CPC classification number: H01L51/5028 ,  C07D409/10 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1011 ,  C09K2211/1029 ,  C09K2211/1044 ,  C09K2211/1088 ,  C09K2211/1092 ,  C09K2211/185 ,  H01L51/0056 ,  H01L51/0058 ,  H01L51/0059 ,  H01L51/006 ,  H01L51/0061 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/0085 ,  H01L51/5016 ,  H05B33/14

Abstract: A light-emitting element having high external quantum efficiency is provided. A light-emitting element having low drive voltage is provided. Provided is a light-emitting element which includes a light-emitting layer containing a phosphorescent compound, a first organic compound, and a second organic compound between a pair of electrodes. A combination of the first organic compound and the second organic compound forms an exciplex (excited complex). An emission spectrum of the exciplex overlaps with an absorption band located on the longest wavelength side of an absorption spectrum of the phosphorescent compound. A peak wavelength of the emission spectrum of the exciplex is longer than or equal to a peak wavelength of the absorption band located on the longest wavelength side of the absorption spectrum of the phosphorescent compound.

公开(公告)号：US20170256817A1

公开(公告)日：2017-09-07

申请号：US15445433

申请日：2017-02-28

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Hiroshi KADOMA ,  Teppei OGUNI ,  Satoshi SEO

IPC: H01M10/0565 ,  H01M2/02 ,  H01M10/0525

CPC classification number: H01M10/0565 ,  C01B32/194 ,  C01B32/198 ,  C01B32/23 ,  C01B2204/22 ,  H01M2/0275 ,  H01M10/0525 ,  H01M10/0585 ,  H01M2300/0082 ,  Y02E60/122 ,  Y02P70/54 ,  Y02T10/7011

Abstract: A material that can be used in a wide temperature range is provided. A graphene compound includes graphene or graphene oxide and a substituted or unsubstituted chain group, the chain group includes two or more ether bonds, and the chain group is bonded to the above graphene or graphene oxide through a Si atom. Alternatively, a method for forming a graphene compound includes a first step and a second step after the first step. In the first step, graphene oxide and a base are stirred under a nitrogen stream. In the second step, the mixture is cooled to room temperature, a silylating agent that has a group having two or more ether bonds is introduced into the mixture, and the obtained mixture is stirred. The base is butylamine, pentylamine, hexylamine, diethylamine, dipropylamine, dibutylamine, triethylamine, tripropylamine, or pyridine.

公开(公告)号：US20170222156A1

公开(公告)日：2017-08-03

申请号：US15416348

申请日：2017-01-26

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Sachiko KAWAKAMI ,  Tsunenori SUZUKI ,  Yusuke TAKITA ,  Satoshi SEO

IPC: H01L51/00 ,  C07D307/77 ,  C09K11/06

CPC classification number: H01L51/0061 ,  C07D307/77 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1011 ,  C09K2211/1014 ,  H01L27/3262 ,  H01L51/0054 ,  H01L51/0058 ,  H01L51/006 ,  H01L51/0072 ,  H01L51/0073 ,  H01L51/5004 ,  H01L51/5012 ,  H01L51/5056 ,  H01L51/5064 ,  H01L2251/552

Abstract: A novel light-emitting element is provided. A light-emitting element with a long lifetime is provided. A light-emitting element with high emission efficiency is provided. A novel organic compound is provided. A novel organic compound having a hole-transport property is provided. A novel hole-transport material is provided. A hole-transport material including an organic compound having a substituted or unsubstituted benzonaphthofuran skeleton and a substituted or unsubstituted amine skeleton is provided. A light-emitting element using the hole-transport material is provided. An organic compound in which an amine skeleton including two aromatic hydrocarbon groups having 6 to 60 carbon atoms is bonded to the 6- or 8-position of the benzonaphthofuran skeleton is provided.

公开(公告)号：US20170183368A1

公开(公告)日：2017-06-29

申请号：US15386432

申请日：2016-12-21

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Tomoka Hara ,  Miki KANAMOTO ,  Hideko INOUE ,  Satoshi SEO ,  Satomi MITSUMORI ,  Takeyoshi WATABE ,  Nobuharu OHSAWA

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

CPC classification number: C07F15/0086 ,  C07F15/0033 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1022 ,  C09K2211/1029 ,  C09K2211/1044 ,  C09K2211/1059 ,  C09K2211/1074 ,  C09K2211/1096 ,  C09K2211/185 ,  H01L51/0085 ,  H01L51/0087 ,  H01L51/0094 ,  H01L51/5012 ,  H01L51/5016 ,  Y02P20/582

Abstract: A novel light-emitting material is provided. A novel orgnometallic complex is provided. An orgnometallic complex having a high carrier-transport property is provided. An orgnometallic complex having a deep HOMO level and/or a deep LUMO level is provided. An orgnometallic complex having a high charge-injection property is provided. Another object is to provide an organometallic complex that can exhibit yellow to blue phosphorescence. An organometallic complex that has a high carrier-transport property and exhibits green to blue phosphorescence is provided. An organometallic complex including a ligand having a structure of 5-(2-pyridinyl)-5H-benzimidazo[1,2-a]benzimidazole and a light-emitting material including the organometallic complex are provided.