公开(公告)号：US20250151595A1

公开(公告)日：2025-05-08

申请号：US19014628

申请日：2025-01-09

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Taisuke KAMADA ,  Ryo HATSUMI ,  Daisuke KUBOTA ,  Naoaki HASHIMOTO ,  Tsunenori SUZUKI ,  Harue OSAKA ,  Satoshi SEO

IPC: H10K65/00 ,  H10K39/32 ,  H10K50/16 ,  H10K50/17 ,  H10K50/86 ,  H10K59/12 ,  H10K59/40 ,  H10K101/30

Abstract: An object is to provide a highly reliable display unit having a function of sensing light. The display unit includes a light-receiving device and a light-emitting device. The light-receiving device includes an active layer between a pair of electrodes. The light-emitting device includes a hole-injection layer, a light-emitting layer, and an electron-transport layer between a pair of electrodes. The light-receiving device and the light-emitting device share one of the electrodes, and may further share another common layer between the pair of electrodes. The hole-injection layer is in contact with an anode and contains a first compound and a second compound. The electron-transport property of the electron-transport layer is low; hence, the light-emitting layer is less likely to have excess electrons. Here, the first compound is the material having a property of accepting electrons from the second compound.

公开(公告)号：US20250120299A1

公开(公告)日：2025-04-10

申请号：US18917737

申请日：2024-10-16

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Tsunenori SUZUKI ,  Naoaki HASHIMOTO ,  Eriko SAIJO ,  Satoshi SEO

IPC: H10K85/30 ,  H10K50/11 ,  H10K50/13 ,  H10K50/16 ,  H10K85/60 ,  H10K101/00 ,  H10K101/10 ,  H10K101/30

Abstract: A light-emitting element which includes a plurality of light-emitting layers between a pair of electrodes and has low driving voltage and high emission efficiency is provided. A light-emitting element including first to third light-emitting layers between a cathode and an anode is provided. The first light-emitting layer includes a first phosphorescent material and a first electron-transport material; the second light-emitting layer includes a second phosphorescent material and a second electron-transport material; the third light-emitting layer includes a fluorescent material and a third electron-transport material; the first to third light-emitting elements are provided in contact with an electron-transport layer positioned on a cathode side; and a triplet excitation energy level of a material included in the electron-transport layer is lower than triplet excitation energy levels of the first electron-transport material and the second electron-transport material.

公开(公告)号：US20250120278A1

公开(公告)日：2025-04-10

申请号：US18979744

申请日：2024-12-13

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

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

IPC: H10K59/35 ,  H10K50/11 ,  H10K50/12 ,  H10K50/13 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17 ,  H10K50/18 ,  H10K50/81 ,  H10K50/828 ,  H10K50/84 ,  H10K50/85 ,  H10K50/86 ,  H10K59/12 ,  H10K85/30 ,  H10K85/60 ,  H10K101/10 ,  H10K101/30

Abstract: A multicolor light-emitting element that utilizes fluorescence and phosphorescence and is advantageous for practical application is provided. The light-emitting element has a stacked-layer structure of a first light-emitting layer containing a host material and a fluorescent substance and a second light-emitting layer containing two kinds of organic compounds and a substance that can convert triplet excitation energy into luminescence. Note that light emitted from the first light-emitting layer has an emission peak on the shorter wavelength side than light emitted from the second light-emitting layer.

公开(公告)号：US20250115544A1

公开(公告)日：2025-04-10

申请号：US18937148

申请日：2024-11-05

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Satoshi SEO ,  Nobuharu OHSAWA ,  Tomohiro KUBOTA ,  Takeyoshi WATABE ,  Airi UEDA ,  Yasushi KITANO ,  Takao TOSU

IPC: H10K85/60 ,  H10K50/17 ,  H10K50/858 ,  H10K101/30

Abstract: To provide a novel arylamine compound with a low refractive index. The provided arylamine compound includes at least one aromatic group. The aromatic group includes a first benzene ring, a second benzene ring, a third benzene ring, and at least three alkyl groups. The first benzene ring, the second benzene ring, and the third benzene ring are directly bonded in this order. The first benzene ring is bonded to nitrogen of amine. The first benzene ring may further include a substituted or unsubstituted phenyl group. The second benzene ring or the third benzene ring may further include an alkylated phenyl group. Each of first positions and third positions of two or more of the first to third benzene rings is independently bonded to another benzene ring, a benzene ring of the alkylated phenyl group, any of the at least three alkyl groups, or the nitrogen of the amine.

公开(公告)号：US20250113711A1

公开(公告)日：2025-04-03

申请号：US18978174

申请日：2024-12-12

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kaoru HATANO ,  Satoshi SEO ,  Shunpei YAMAZAKI

IPC: H10K59/127 ,  H04M1/02 ,  H10K50/84 ,  H10K59/12 ,  H10K59/122 ,  H10K59/124 ,  H10K71/50 ,  H10K77/10 ,  H10K102/00

Abstract: The invention relates to: a light-emitting device which includes a first flexible substrate having a first electrode, a light-emitting layer over the first electrode, and a second electrode with a projecting portion over the light-emitting layer and a second flexible substrate having a semiconductor circuit and a third electrode electrically connected to the semiconductor circuit, in which the projecting portion of the second electrode and the third electrode are electrically connected to each other; a method for manufacturing the light-emitting device; and a cellular phone which includes a housing incorporating the light-emitting device and having a longitudinal direction and a lateral direction, in which the light-emitting device is disposed on a front side and in an upper portion in the longitudinal direction of the housing.

公开(公告)号：US20250098516A1

公开(公告)日：2025-03-20

申请号：US18967253

申请日：2024-12-03

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hideko INOUE ,  Tomoya YAMAGUCHI ,  Hiromi SEO ,  Satoshi SEO ,  Kunihiko SUZUKI ,  Miki KANAMOTO

IPC: H10K85/30 ,  C07F15/00 ,  C09K11/02 ,  C09K11/06 ,  H05B33/10 ,  H10K50/11 ,  H10K85/60 ,  H10K101/10

Abstract: As a novel substance having a novel skeleton, an organometallic complex with high emission efficiency which achieves improved color purity by a reduction of half width of an emission spectrum is provided. One embodiment of the present invention is an organometallic complex in which a β-diketone and a six-membered heteroaromatic ring including two or more nitrogen atoms inclusive of a nitrogen atom that is a coordinating atom are ligands. In General Formula (G1), X represents a substituted or unsubstituted six-membered heteroaromatic ring including two or more nitrogen atoms inclusive of a nitrogen atom that is a coordinating atom. Further, R1 to R4 each represent a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms.

公开(公告)号：US20250089560A1

公开(公告)日：2025-03-13

申请号：US18897415

申请日：2024-09-26

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi SEO ,  Tsunenori Suzuki ,  Naoaki Hashimoto

IPC: H10K85/60 ,  H10K50/11 ,  H10K50/155 ,  H10K50/16 ,  H10K50/84 ,  H10K101/30 ,  H10K101/40

Abstract: Provided is a novel light-emitting element, a light-emitting element with a long lifetime, or a light-emitting element with high emission efficiency. The light-emitting element includes an EL layer between a pair of electrodes. The EL layer includes at least a light-emitting layer containing a fluorescent substance and a host material, a first electron-transport layer containing a first electron-transport material, and a second electron-transport layer containing a second electron-transport material, which are in contact with each other and in this order. The LUMO level of each of the host material and the second electron-transport material is higher than the LUMO level of the first electron-transport material.

公开(公告)号：US20250084302A1

公开(公告)日：2025-03-13

申请号：US18814801

申请日：2024-08-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Miyako MORIKUBO ,  Yuki HAYASHI ,  Tsunenori SUZUKI ,  Takashi SHINGU ,  Sachiko KAWAKAMI ,  Harue OSAKA ,  Satoshi SEO

IPC: C09K11/06 ,  C07D209/86 ,  H10K50/858

Abstract: An organic compound is represented by General Formula (G1). In the formula, each of R1 to R4 independently represents any of hydrogen (including deuterium), 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 aromatic hydrocarbon group having 6 to 30 carbon atoms, and a substituent represented by General Formula (G1-1). Each of R5 to R8 independently represents any of hydrogen (including deuterium), 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 aromatic hydrocarbon group having 6 to 30 carbon atoms, and a substituent represented by General Formula (G1-3). At least one of R5 to R8 represents a substituent represented by General Formula (G1-3).

公开(公告)号：US20250081840A1

公开(公告)日：2025-03-06

申请号：US18598245

申请日：2024-03-07

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takuya HARUYAMA ,  Satoshi SEO ,  Nobuharu OHSAWA

IPC: H10K85/60 ,  C07C211/61 ,  C09K11/02 ,  C09K11/06 ,  H10K50/11 ,  H10K50/12 ,  H10K50/842 ,  H10K50/858 ,  H10K59/131 ,  H10K59/35 ,  H10K59/38 ,  H10K101/10 ,  H10K102/00

Abstract: A novel compound is provided. The novel compound is represented by General Formula (G1). In General Formula (G1), A represents a substituted or unsubstituted condensed aromatic ring having 10 to 30 carbon atoms or a substituted or unsubstituted condensed heteroaromatic ring having 10 to 30 carbon atoms, and R1 represents a substituted or unsubstituted aryl group having 6 to 25 carbon atoms. Each of Y1 and Y2 independently represents a cycloalkyl group having a bridge structure and having 7 to 10 carbon atoms.

公开(公告)号：US20250081715A1

公开(公告)日：2025-03-06

申请号：US18892023

申请日：2024-09-20

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi SEO ,  Nobuharu OHSAWA

IPC: H10K50/11 ,  H10K85/30 ,  H10K85/60 ,  H10K101/00 ,  H10K101/10 ,  H10K101/30

Abstract: A light-emitting element containing a light-emitting material with high luminous efficiency is provided. The light-emitting element includes a host material and a guest material. The host material includes a first organic compound and a second organic compound. In the first organic compound, a difference between a singlet excitation energy level and a triplet excitation energy level is larger than 0 eV and smaller than or equal to 0.2 eV. The HOMO level of one of the first organic compound and the second organic compound is higher than or equal to that of the other organic compound, and the LUMO level of the one of the organic compounds is higher than or equal to that of the other organic compound. The first organic compound and the second organic compound form an exciplex.