公开(公告)号：US20210336176A1

公开(公告)日：2021-10-28

申请号：US17237262

申请日：2021-04-22

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yuta KAWANO ,  Airi UEDA ,  Takeyoshi WATABE ,  Nobuharu OHSAWA ,  Keito TOSU ,  Harue OSAKA ,  Satoshi SEO ,  Ryo NARUKAWA ,  Shiho NOMURA

IPC: H01L51/50 ,  H01L27/32

Abstract: A light-emitting device with high emission efficiency is provided. The light-emitting device includes an anode, a cathode, and an EL layer positioned between the anode and the cathode. The EL layer includes a light-emitting layer and an electron-transport layer; the light-emitting layer includes a light-emitting material; the electron-transport layer includes an organic compound having an electron-transport property and a metal complex of an alkali metal; the ordinary refractive index of the organic compound having an electron-transport property in a peak wavelength of light emitted from the light-emitting material is greater than or equal to 1.50 and less than or equal to 1.75; and the ordinary refractive index of the metal complex of an alkali metal in the peak wavelength of the light emitted from the light-emitting material is greater than or equal to 1.45 and less than or equal to 1.70.

公开(公告)号：US20240164134A1

公开(公告)日：2024-05-16

申请号：US18423895

申请日：2024-01-26

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yuta KAWANO ,  Airi UEDA ,  Takeyoshi WATABE ,  Nobuharu OHSAWA ,  Keito TOSU ,  Harue OSAKA ,  Satoshi SEO ,  Ryo NARUKAWA ,  Shiho NOMURA

IPC: H10K50/16 ,  H10K59/00 ,  H10K59/12

CPC classification number: H10K50/16 ,  H10K59/00 ,  H10K59/12 ,  H10K85/631

Abstract: A light-emitting device with high emission efficiency is provided. The light-emitting device includes an anode, a cathode, and an EL layer positioned between the anode and the cathode. The EL layer includes a light-emitting layer and an electron-transport layer; the light-emitting layer includes a light-emitting material; the electron-transport layer includes an organic compound having an electron-transport property and a metal complex of an alkali metal; the ordinary refractive index of the organic compound having an electron-transport property in a peak wavelength of light emitted from the light-emitting material is greater than or equal to 1.50 and less than or equal to 1.75; and the ordinary refractive index of the metal complex of an alkali metal in the peak wavelength of the light emitted from the light-emitting material is greater than or equal to 1.45 and less than or equal to 1.70.

公开(公告)号：US20220029105A1

公开(公告)日：2022-01-27

申请号：US17276289

申请日：2019-09-12

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Tomoka HARA ,  Keito TOSU ,  Hideko YOSHIZUMI ,  Toshiki SASAKI ,  Hiromitsu KIDO ,  Satoshi SEO

IPC: H01L51/00 ,  C07D519/00 ,  C07D491/048 ,  C07D495/04

Abstract: A novel organic compound, a benzofuropyrimidine derivative or a benzothienopyrimidine derivative is provided. The organic compound has a structure in which a benzothienocarbazolyl ring, a benzofurocarbazolyl ring, an indolocarbazolyl ring, or an indenocarbazolyl ring is bonded to the 8-position of a benzofuropyrimidine ring or a benzothienopyrimidine ring directly or through an aromatic hydrocarbon ring. That is, the organic compound is represented by General Formula (G1) below.

公开(公告)号：US20240373748A1

公开(公告)日：2024-11-07

申请号：US18760631

申请日：2024-07-01

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Tomoka HARA ,  Keito TOSU ,  Hideko YOSHIZUMI ,  Toshiki SASAKI ,  Hiromitsu KIDO ,  Satoshi SEO

IPC: H10K85/60 ,  C07D491/048 ,  C07D495/04 ,  C07D519/00 ,  H10K50/11 ,  H10K101/10

Abstract: A novel organic compound, a benzofuropyrimidine derivative or a benzothienopyrimidine derivative is provided. The organic compound has a structure in which a benzothienocarbazolyl ring, a benzofurocarbazolyl ring, an indolocarbazolyl ring, or an indenocarbazolyl ring is bonded to the 8-position of a benzofuropyrimidine ring or a benzothienopyrimidine ring directly or through an aromatic hydrocarbon ring. That is, the organic compound is represented by General Formula (G1) below.

公开(公告)号：US20230292544A1

公开(公告)日：2023-09-14

申请号：US18016717

申请日：2021-07-13

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yuta KAWANO ,  Airi UEDA ,  Takeyoshi WATABE ,  Nobuharu OHSAWA ,  Keito TOSU ,  Harue OSAKA ,  Satoshi SEO

IPC: H10K50/858 ,  H10K85/30 ,  H10K85/60 ,  C09K11/06 ,  H10K59/35

CPC classification number: H10K50/858 ,  C09K11/06 ,  H10K59/35 ,  H10K85/342 ,  H10K85/654 ,  H10K85/6572 ,  C09K2211/1029 ,  C09K2211/185 ,  H10K50/166

Abstract: Provided is an inexpensive light-emitting device with high emission efficiency. Provided is a light-emitting device including an anode, a cathode, an EL layer positioned between the anode and the cathode; the EL layer includes a hole-transport region, a light-emitting layer, and an electron-transport region; the hole-transport region is positioned between the anode and the light-emitting layer; the electron-transport region is positioned between the cathode and the light-emitting layer; the hole-transport region contains any one of a sulfonic acid compound, a fluorine compound, and a metal oxide; the electron-transport region contains an organic compound having an electron-transport property; and an ordinary refractive index of the organic compound having an electron-transport property with respect to light with a wavelength greater than or equal to 455 nm and less than or equal to 465 nm is higher than or equal to 1.50 and lower than or equal to 1.75.

公开(公告)号：US20230276700A1

公开(公告)日：2023-08-31

申请号：US18020490

申请日：2021-07-29

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yuta Kawano ,  Airi UEDA ,  Takeyoshi WATABE ,  Nobuharu OHSAWA ,  Keito TOSU ,  Harue OSAKA ,  Satoshi SEO

IPC: H10K85/60 ,  H10K50/858 ,  H10K71/13 ,  C07D251/24 ,  C09K11/06

CPC classification number: H10K85/654 ,  H10K50/858 ,  H10K71/135 ,  C07D251/24 ,  C09K11/06 ,  H10K50/15

Abstract: An inexpensive light-emitting device with high emission efficiency is provided. A light-emitting device including an anode, a cathode, and an EL layer positioned between the anode and the cathode is provided. The EL layer includes a hole-transport region, a light-emitting layer, and an electron-transport region. The hole-transport region is positioned between the anode and the light-emitting layer. The electron-transport region is positioned between the cathode and the light-emitting layer. The hole-transport region contains a heteropoly acid and an organic compound having a π-electron rich aromatic ring or contains a heteropoly acid and an organic compound having a π-electron rich heteroaromatic ring. The electron-transport region contains an organic compound with an electron-transport property. The ordinary refractive index of the organic compound with an electron-transport property is higher than or equal to 1.50 and lower than or equal to 1.75 for light with a wavelength of greater than or equal to 455 nm and less than or equal to 465 nm.

公开(公告)号：US20220140250A1

公开(公告)日：2022-05-05

申请号：US17516826

申请日：2021-11-02

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Yuta KAWANO ,  Takeyoshi WATABE ,  Airi UEDA ,  Nobuharu OHSAWA ,  Keito TOSU ,  Harue OSAKA ,  Ryo NARUKAWA ,  Satoshi SEO

IPC: H01L51/00

Abstract: A novel light-emitting device, a novel light-emitting apparatus, a novel electronic device, a novel display device, and a novel lighting device which are highly convenient, useful, or reliable are provided. The light-emitting device includes a first electrode, a second electrode, a first layer, and a second layer. The second electrode includes a region overlapping with the first electrode, the first layer includes a region sandwiched between the first electrode and the second electrode, the first layer includes a light-emitting material, the light-emitting material has a function of emitting photoluminescent light in a solution, the photoluminescent light has a first spectrum, the first spectrum has a maximum peak at a wavelength λ1, and the wavelength λ1 is in the range greater than or equal to 440 nm and less than or equal to 470 nm. The second layer includes a region sandwiched between the first layer and the second electrode, the second layer includes a first organic compound, the first organic compound has a first refractive index n1 with respect to light having the wavelength λ1, and the first refractive index n1 is more than or equal to 1.4 and less than or equal to 1.75.