公开(公告)号：US20240349531A1

公开(公告)日：2024-10-17

申请号：US18700081

申请日：2022-10-03

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takeyoshi WATABE ,  Nobuharu OHSAWA ,  Satoshi SEO

IPC: H10K50/858 ,  H10K50/13 ,  H10K50/17 ,  H10K59/80 ,  H10K102/00

CPC classification number: H10K50/858 ,  H10K50/13 ,  H10K50/17 ,  H10K50/171 ,  H10K59/879 ,  H10K2102/351

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, a first layer, a second layer, and a third layer. The first layer is interposed between the first electrode and the second electrode. The second layer is interposed between the second electrode and the first layer. The third layer is interposed between the second layer and the first layer. The first layer contains a first light-emitting material. The first light-emitting material has an emission spectrum having a peak at a wavelength λ1. The first layer has an ordinary refractive index n1 at the wavelength λ1. The second layer contains a second light-emitting material. The second light-emitting material has an emission spectrum having a peak at a wavelength λ2. The second layer has an ordinary refractive index n2 at the wavelength λ2. The third layer has an ordinary refractive index n31 which is lower than the ordinary refractive index n1 at the wavelength λ1. The third layer has an ordinary refractive index n32 which is lower than the ordinary refractive index n2 at the wavelength λ2.

公开(公告)号：US20240341166A1

公开(公告)日：2024-10-10

申请号：US18750384

申请日：2024-06-21

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takeyoshi WATABE ,  Satoshi SEO

IPC: H10K85/30 ,  C07F15/00 ,  C09K11/06 ,  H10K30/00 ,  H10K50/11 ,  H10K50/16 ,  H10K50/17 ,  H10K50/84 ,  H10K59/12 ,  H10K59/38 ,  H10K59/40 ,  H10K71/00 ,  H10K71/16 ,  H10K85/60 ,  H10K102/00

CPC classification number: H10K85/342 ,  C07F15/0033 ,  C09K11/06 ,  H10K85/615 ,  H10K85/626 ,  H10K85/631 ,  H10K85/633 ,  H10K85/636 ,  H10K85/654 ,  H10K85/6572 ,  H10K85/6576 ,  C09K2211/1029 ,  C09K2211/1044 ,  C09K2211/185 ,  H10K30/00 ,  H10K50/11 ,  H10K50/16 ,  H10K50/171 ,  H10K50/84 ,  H10K59/12 ,  H10K59/38 ,  H10K59/40 ,  H10K71/00 ,  H10K71/164 ,  H10K2102/351

Abstract: An electronic device with high outcoupling efficiency or a high light-trapping effect is provided.
The electronic device includes a first layer and a second layer between a first electrode and a second electrode, the first layer is included between the first electrode and the second layer, the first layer includes a first organic compound and a first substance, the refractive index of a thin film of the first organic compound is higher than or equal to 1 and lower than or equal to 1.75, the first substance has an electron-accepting property, and the second layer has a function of emitting or absorbing light.

公开(公告)号：US20240206225A1

公开(公告)日：2024-06-20

申请号：US18515345

申请日：2023-11-21

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takeyoshi WATABE ,  Hideko YOSHIZUMI ,  Nobuharu OHSAWA

IPC: H10K59/12 ,  H10K59/80 ,  H10K85/20

CPC classification number: H10K59/1201 ,  H10K59/805 ,  H10K85/20

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, a first unit, a second unit, and a first intermediate layer. The first unit is between the first electrode and the second electrode. The first unit contains a first light-emitting material. The second unit is between the first unit and the second electrode. The second unit contains a second light-emitting material. The first intermediate layer is between the first unit and the second unit. The first intermediate layer contains a first organic compound and a second organic compound. The first organic compound has an acid dissociation constant pKa larger than or equal to 8. The second organic compound has an acid dissociation constant pKa smaller than 4.

公开(公告)号：US20240008352A1

公开(公告)日：2024-01-04

申请号：US18343102

申请日：2023-06-28

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takeyoshi WATABE ,  Nobuharu OHSAWA

IPC: H10K71/20

CPC classification number: H10K71/233 ,  H10K2101/30

Abstract: An electronic device or a light-emitting device with high design flexibility and favorable reliability is provided by the following steps. A light-emitting layer containing a first organic compound and a second organic compound is formed over a substrate provided with a first electrode, the substrate is held under lighting of a light source whose shortest-wavelength emission edge among emission edges in an emission spectrum is positioned at a wavelength shorter than a wavelength of the longest-wavelength absorption edge among absorption edges in an absorption spectrum of the first organic compound and at a wavelength longer than a wavelength of the longest-wavelength absorption edge among absorption edges in an absorption spectrum of the second organic compound, a sacrificial layer is formed over the light-emitting layer, at least the light-emitting layer is processed into an island shape by a photolithography method, and a second electrode is formed over the light-emitting layer.

公开(公告)号：US20230422598A1

公开(公告)日：2023-12-28

申请号：US18367514

申请日：2023-09-13

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takeyoshi WATABE ,  Satoshi SEO ,  Satomi MITSUMORI

IPC: H10K85/30 ,  C09K11/02 ,  C09K11/06 ,  C07F15/00 ,  G06F3/044 ,  H05B33/14 ,  G09G3/3225 ,  H10K50/11 ,  H10K50/12

CPC classification number: H10K85/342 ,  C09K11/025 ,  C09K11/06 ,  C07F15/0033 ,  G06F3/044 ,  H05B33/14 ,  G09G3/3225 ,  H10K50/11 ,  H10K50/121 ,  C09K2211/1007 ,  C09K2211/1059 ,  C09K2211/185 ,  G09G2300/0452 ,  G09G2310/0267 ,  G09G2310/0272 ,  G09G2310/08 ,  G09G2330/021 ,  G06F3/0416

Abstract: To provide a light-emitting element with high emission efficiency and low driving voltage. The light-emitting element includes a guest material and a host material. A LUMO level of the host material is higher than a LUMO level of the host material, and a HOMO level of the guest material is lower than a HOMO level of the host material. The guest material has a function of converting triplet excitation energy into light emission. The difference between a singlet excitation energy level and a triplet excitation energy level of the host material is greater than 0 eV and less than or equal to 0.2 eV. The energy difference between the LUMO level and the HOMO level of the host material is larger than or equal to light emission energy of the guest material.

公开(公告)号：US20230348400A1

公开(公告)日：2023-11-02

申请号：US18305609

申请日：2023-04-24

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takuya HARUYAMA ,  Sachiko KAWAKAMI ,  Yui YOSHIYASU ,  Nobuharu OHSAWA ,  Takeyoshi WATABE ,  Hideko YOSHIZUMI

IPC: C07F1/08 ,  H10K85/30 ,  C07F7/08 ,  C07D239/70 ,  C07F15/00 ,  H10K85/60 ,  H10K85/40

CPC classification number: C07D239/70 ,  C07F1/08 ,  C07F7/0812 ,  C07F15/0033 ,  H10K85/342 ,  H10K85/371 ,  H10K85/40 ,  H10K85/633 ,  H10K85/655 ,  C07B2200/05

Abstract: A novel organic compound is provided. The organic compound is represented by General Formula (G1). In General Formula (G1), R1 to R16 each independently represent any one of hydrogen (including deuterium), a substituted or unsubstituted straight-chain alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted branched alkyl group having 3 to 10 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 10 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 12 carbon atoms, a substituted or unsubstituted cycloalkyl group having 4 to 10 carbon atoms and having a bridged structure, a trialkylsilyl group having 3 to 12 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, and a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms; at least one of R1 to R16 represents a substituent represented by General Formula (g1-1); and one or more, preferably two or more of R1 to R16 in General Formula (G1) represent substituents other than hydrogen (including deuterium) and the substituent represented by General Formula (g1-1).

公开(公告)号：US20230329083A1

公开(公告)日：2023-10-12

申请号：US18025112

申请日：2021-08-30

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Yui YOSHIYASU ,  Masatoshi TAKABATAKE ,  Hideko YOSHIZUMI ,  Yuta KAWANO ,  Takeyoshi WATABE ,  Satoshi SEO

IPC: H10K85/30 ,  C07F15/00 ,  C09K11/06

CPC classification number: H10K85/342 ,  C07F15/0033 ,  C09K11/06 ,  H10K50/11

Abstract: A novel organometallic complex with high heat resistance is provided. The organometallic complex includes a structure represented by General Formula (G1) below, in which iridium and a ligand are included, the ligand includes a pyrazine skeleton, iridium is bonded to nitrogen at the 1-position of the pyrazine skeleton, an aryl group including a cyano group as a substituent is bonded at the 5-position of the pyrazine skeleton, and each of the 3-position and the 6-position of the pyrazine skeleton is independently bonded to any one of hydrogen, an alkyl group, and an alkoxy group.




(In the formula, A represents a substituted or unsubstituted aromatic hydrocarbon group having 6 to 25 carbon atoms. In addition, Ar represents an aryl group having 6 to 25 carbon atoms and at least one cyano group as a substituent. Each of R1 and R2 independently represents any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, and an alkoxy group having 1 to 6 carbon atoms.)

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：US20230232707A1

公开(公告)日：2023-07-20

申请号：US18150264

申请日：2023-01-05

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takeyoshi WATABE ,  Takuya ISHIMOTO ,  Nobuharu OHSAWA

IPC: H10K85/60 ,  H10K50/19 ,  H10K85/30

CPC classification number: H10K85/633 ,  H10K50/19 ,  H10K85/636 ,  H10K85/6576 ,  H10K85/657 ,  H10K85/6572 ,  H10K85/615 ,  H10K85/342 ,  H10K85/626 ,  H10K85/654 ,  H10K85/371 ,  H10K50/11

Abstract: A novel display apparatus that is highly convenient, useful, or reliable is provided. The display apparatus includes a first electrode, a second electrode, a first unit, a second unit, and a first intermediate layer; the first unit is located between the second electrode and the first electrode; and the first unit contains a first light-emitting material EM1. The second unit is located between the second electrode and the first unit and contains a second light-emitting material EM2. The first intermediate layer is located between the second unit and the first unit. The first intermediate layer includes a first layer and a second layer; the first layer is located between the second unit and the second layer; the first layer contains an organic compound having a halogen group or a cyano group or a transition metal oxide; and the second layer contains a first organic compound AM2 having an electron-accepting property, a second organic compound DM having an electron-donating property, and a third organic compound BM having basicity.

公开(公告)号：US20230096419A1

公开(公告)日：2023-03-30

申请号：US17957181

申请日：2022-09-30

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yusuke NONAKA ,  Satoshi SEO ,  Harue OSAKA ,  Tsunenori SUZUKI ,  Takeyoshi WATABE

IPC: H01L51/50 ,  H01L51/52

Abstract: To increase emission efficiency of a fluorescent light-emitting element by efficiently utilizing a triplet exciton generated in a light-emitting layer. The light-emitting layer of the light-emitting element includes at least a host material and a guest material. The triplet exciton generated from the host material in the light-emitting layer is changed to a singlet exciton by triplet-triplet annihilation (TTA). The guest material (fluorescent dopant) is made to emit light by energy transfer from the singlet exciton. Thus, the emission efficiency of the light-emitting element is improved.