公开(公告)号：US20250034177A1

公开(公告)日：2025-01-30

申请号：US18763512

申请日：2024-07-03

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Harue OSAKA ,  Satoko NUMATA ,  Nobuharu OHSAWA ,  Yuko KUBOTA ,  Kyoko TAKEDA ,  Hiromitsu KIDO

IPC: C07F7/08 ,  C09K11/06 ,  H10K85/40 ,  H10K85/60

Abstract: An organic compound having high heat resistance is provided. An organic compound represented by a general formula (G1) is provided. In the formula, Q represents carbon or silicon; each of R1 and R2 independently represents an alkyl group, a cycloalkyl group, or an aryl group; n represents an integer from 1 to 3; each of α1 to α4 independently represents a phenylene group or a biphenylene group; at least one of R15, R25, R31 and at least one of R45, R55, and R61 represent single bonds and the others thereof represent H, an alkyl group, or an aryl group; and R11 to R14, R21 to R24, R32 to R35, R41 to R44, R51 to R54, and R62 to R65 represent H, an alkyl group, a cycloalkyl group, or an aryl group.

公开(公告)号：US20230018126A1

公开(公告)日：2023-01-19

申请号：US17841856

申请日：2022-06-16

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Hideko YOSHIZUMI ,  Ryo NARUKAWA ,  Satoko NUMATA

IPC: H01L51/50 ,  H01L51/00

Abstract: A novel light-emitting device that is highly convenient, useful, or reliable is provided. The light-emitting device includes a first electrode, a second electrode, and a first unit. The first unit is located between the first electrode and the second electrode, and the first unit has a function of emitting light. The first unit contains a light-emitting organic compound and an organic compound HRM. The organic compound HRM has four or more rotatable bonds and a principal moment of inertia. The principal moment of inertia includes a first normalized principal moment of inertia NPR1 and a second normalized principal moment of inertia NPR2 in a predetermined region.

公开(公告)号：US20230329105A1

公开(公告)日：2023-10-12

申请号：US18130684

申请日：2023-04-04

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Satoko NUMATA ,  Harue OSAKA ,  Sachiko KAWAKAMI ,  Takashi SHINGU ,  Anna TADA ,  Yui YOSHIYASU ,  Yasuhiro NIIKURA ,  Eriko AOYAMA ,  Naoaki HASHIMOTO ,  Satoshi SEO

IPC: H10K85/60 ,  H10K85/30

CPC classification number: H10K85/6572 ,  H10K85/633 ,  H10K50/16 ,  H10K85/342 ,  H10K85/6574 ,  H10K85/636

Abstract: An organic semiconductor device that can achieve high resolution and favorable reliability is provided. The organic semiconductor device is one of a plurality of light-emitting devices formed over an insulating layer, which includes a first electrode, a second electrode, and an organic compound layer. The organic compound layer is positioned between the first electrode and the second electrode. The organic compound layer includes a layer containing a first compound. When differential scanning calorimetry is performed on the first compound in such a manner that a cooling step is performed from the state in which the first compound is melted in a first heating step and a second heating step is successively performed, an exothermic peak is not observed in the cooling step and an exothermic peak and a melting point peak are not observed in the second heating step.

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.