公开(公告)号：US20220216445A1

公开(公告)日：2022-07-07

申请号：US17552638

申请日：2021-12-16

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Hiromi SEO ,  Takeyoshi WATABE ,  Airi UEDA ,  Yuta KAWANO ,  Nobuharu OHSAWA ,  Hiromitsu KIDO ,  Satoshi SEO

IPC: H01L51/50 ,  H01L51/00 ,  H01L51/42

Abstract: An organic semiconductor device with low driving voltage is provided. The organic semiconductor device includes a layer containing an organic compound between a pair of electrodes. The layer containing an organic compound includes a hole-transport region. The hole-transport region includes a first layer and a second layer. The first layer is positioned between the anode and the second layer. When a potential gradient of a surface potential of an evaporated film is set as GSP (mV/nm), a value obtained by subtracting GSP of an organic compound in the second layer from GSP of an organic compound in the first layer is less than or equal to 20 (mV/nm).

公开(公告)号：US20180053903A1

公开(公告)日：2018-02-22

申请号：US15674943

申请日：2017-08-11

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroki SUZUKI ,  Tomoya YAMAGUCHI ,  Hideko YOSHIZUMI ,  Satoshi SEO ,  Tatsuyoshi TAKAHASHI ,  Hiromitsu KIDO ,  Satomi WATABE

IPC: H01L51/00 ,  C09K11/06 ,  C07D491/048

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. The organic compound has a benzofuroquinoxaline skeleton or a benzothienoquinoxaline skeleton. The organic compound is represented by General Formula (G1). In the formula, Q represents O or S, and each of R1 to R8 independently represents any of hydrogen, a halogeno group, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted aryl group having 6 to 12 carbon atoms, and a substituted or unsubstituted heteroaryl group having 3 to 12 carbon atoms. At least one of R1 to R8 includes a substituted or unsubstituted condensed aromatic or heteroaromatic ring having 3 to 24 carbon atoms.

公开(公告)号：US20170288155A1

公开(公告)日：2017-10-05

申请号：US15471248

申请日：2017-03-28

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Miki KURIHARA ,  Yui YAMADA ,  Hideko INOUE ,  Satoshi SEO ,  Tatsuyoshi TAKAHASHI ,  Hiromitsu KIDO

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

CPC classification number: H01L51/0085 ,  C07F15/0033 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1044 ,  C09K2211/185 ,  H01L27/323 ,  H01L27/3244 ,  H01L51/5012 ,  H01L51/5016 ,  H01L51/5237 ,  H01L2251/5338 ,  H01L2251/5361

Abstract: To provide a novel organometallic complex. The organometallic complex is represented by General Formula (G1) and includes a central metal, a first ligand, and a second ligand. The first ligand and the second ligand are cyclometalated ligands. At least one of the first ligand and the second ligand includes a substituted or unsubstituted aryl group as a substituent. In General Formula (G1), each of R1 to R15 independently represents any of hydrogen, a halogen group, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, and a substituted or unsubstituted heteroaryl group having 3 to 12 carbon atoms. Note that at least one of R1 to R15 represents a substituted or unsubstituted aryl group having 6 to 13 carbon atoms.

公开(公告)号：US20240431130A1

公开(公告)日：2024-12-26

申请号：US18794017

申请日：2024-08-05

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

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

IPC: H10K50/11 ,  G09G3/3266 ,  G09G3/3275 ,  H01L27/146 ,  H10K50/14 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17 ,  H10K50/818 ,  H10K50/842 ,  H10K50/856 ,  H10K50/86 ,  H10K59/121 ,  H10K59/126 ,  H10K59/131 ,  H10K59/32 ,  H10K59/35 ,  H10K59/38 ,  H10K59/40 ,  H10K85/60 ,  H10K101/00 ,  H10K101/10

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：US20240059720A1

公开(公告)日：2024-02-22

申请号：US18267173

申请日：2021-12-16

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hideko YOSHIZUMI ,  Hiromitsu KIDO ,  Satomi WATABE ,  Satoshi SEO

IPC: C07F15/00 ,  H10K85/60

CPC classification number: C07F15/0033 ,  H10K85/654

Abstract: A novel organometallic complex is provided. An organometallic complex represented by General Formula (G1) includes iridium, a first ligand, and a second ligand. Each of the first ligand and the second ligand is a cyclometalated ligand. The first ligand has a quinoline ring coordinated to the iridium. The second ligand has a pyrimidine ring coordinated to the iridium. At least one of the first ligand and the second ligand includes a substituted or unsubstituted aryl group as a substituent. The proportion of the first ligand is twice the proportion of the second ligand.




(In General Formula (G1), R1 to R16 each independently represent any one of hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, and a substituted or unsubstituted heteroaryl group having 3 to 12 carbon atoms.)

公开(公告)号：US20240008301A1

公开(公告)日：2024-01-04

申请号：US18214844

申请日：2023-06-27

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Toshiki Sasaki ,  Hiromitsu KIDO ,  Tsunenori SUZUKI ,  Nobuharu OHSAWA ,  Hideko YOSHIZUMI ,  Satoshi SEO ,  Satoko NUMATA ,  Eriko AOYAMA ,  Yui YOSHIYASU

IPC: H10K50/13 ,  H10K50/16 ,  H10K50/15 ,  H10K85/60 ,  C09K11/06

CPC classification number: H10K50/13 ,  H10K50/16 ,  H10K50/15 ,  H10K85/649 ,  C09K11/06 ,  H10K2101/27

Abstract: A green phosphorescent light-emitting device with a long lifetime is provided. The light-emitting device includes a first electrode, a second electrode, and a light-emitting layer. The light-emitting layer is between the first electrode and the second electrode. The light-emitting layer includes a first organic compound, a second organic compound, and a phosphorescent light-emitting substance. The first organic compound includes a heteroaromatic ring skeleton and an aromatic hydrocarbon group. The second organic compound includes a bicarbazole skeleton. The lowest triplet excited level of the first organic compound is derived from only the aromatic hydrocarbon group. The energy of the lowest triplet excited level of the second organic compound is higher than or equal to 2.20 eV and lower than or equal to 2.65 eV.

公开(公告)号：US20230203054A1

公开(公告)日：2023-06-29

申请号：US18068575

申请日：2022-12-20

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Sachiko KAWAKAMI ,  Yuki HAYASHI ,  Miyako MORIKUBO ,  Tomohiro KUBOTA ,  Hiromitsu KIDO ,  Tomoya YAMAGUCHI ,  Hideko YOSHIZUMI ,  Satoshi SEO

IPC: C07D491/048 ,  H10K10/46 ,  H10K85/60

CPC classification number: C07D491/048 ,  H10K10/46 ,  H10K85/6572 ,  H10K85/6574 ,  H10K85/657

Abstract: An organic compound with a long lifetime and high emission efficiency is provided. An organic compound represented by General Formula (G1) is provided. In the formula, any one of X1 to X4 represents N, another one represents C, and the others represent C or N. Any one of C is bonded to a group represented by General Formula (r1), and the others are bonded to hydrogen (H), an alkyl (R) group, a cycloalkyl (Cy) group, an aryl (Ar) group, or a heteroaryl (Het) group. Ar1 represents an aromatic hydrocarbon, and is fused to an adjacent ring at a given site. When Ar1 represents a benzene ring, the benzene ring includes an Ar group or a Het group. Q and Z represent O or S. Any of R31 to R34 represents a bond to any one of X1 to X4, and the others represent H, an R group, a Cy group, an Ar group, or a Het group. Any one of R35 to R38 represents a polycyclic ring aromatic hydrocarbon group or a Het group, and the others represent H, an R group, a Cy group, an Ar group, or a Het group.

公开(公告)号：US20170186971A1

公开(公告)日：2017-06-29

申请号：US15385064

申请日：2016-12-20

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Miki Kanamoto ,  Hideko INOUE ,  Tatsuyoshi TAKAHASHI ,  Hiromitsu KIDO ,  Satoshi SEO

IPC: H01L51/00 ,  C09K11/06 ,  C07D491/048

Abstract: A compound includes a benzofuropyrimidine skeleton or a benzothienopyrimidine skeleton, a first substituent, and a second substituent. Each of the first substituent and the second substituent includes a furan skeleton, a thiophene skeleton, or a pyrrole skeleton. The first substituent is bonded to a pyrimidine ring included in the benzofuropyrimidine skeleton or a pyrimidine ring included in the benzothienopyrimidine skeleton. The second substituent is bonded to a benzene ring included in the benzofuropyrimidine skeleton or a benzene ring included in the benzothienopyrimidine skeleton. The light-emitting element includes the compound.

公开(公告)号：US20170155072A1

公开(公告)日：2017-06-01

申请号：US15362932

申请日：2016-11-29

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

IPC: H01L51/50

CPC classification number: H01L51/5016 ,  H01L51/0052 ,  H01L51/0054 ,  H01L51/0058 ,  H01L51/006 ,  H01L51/0067 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/5056 ,  H01L51/5072

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：US20250151617A1

公开(公告)日：2025-05-08

申请号：US19018216

申请日：2025-01-13

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Miki KURIHARA ,  Hideko YOSHIZUMI ,  Satomi WATABE ,  Hiromitsu KIDO ,  Satoshi SEO

IPC: H10K85/60 ,  C07D491/048 ,  H10K50/11 ,  H10K59/12 ,  H10K71/16

Abstract: A novel organic compound is provided. That is, a novel organic compound that is effective in improving reliability of a light-emitting element is provided. The organic compound includes a condensed ring including a pyrimidine ring and is represented by General Formula (G1). In General Formula (G1), A represents a group having 6 to 100 carbon atoms and includes at least one of an aromatic ring and a heteroaromatic ring. The aromatic ring and the heteroaromatic ring may each include a substituent. Furthermore, Q represents oxygen or sulfur. A ring X represents a substituted or unsubstituted naphthalene ring or a substituted or unsubstituted phenanthrene ring.