公开(公告)号：US20240324386A1

公开(公告)日：2024-09-26

申请号：US18577764

申请日：2022-07-04

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

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

IPC: H10K59/38 ,  H10K59/80 ,  H10K101/30

CPC classification number: H10K59/38 ,  H10K59/879 ,  H10K2101/30

Abstract: A light-emitting device with high emission efficiency is provided. The light-emitting device includes a first electrode, a second electrode, and an EL layer positioned between the first electrode and the second electrode. The EL layer includes at least a light-emitting layer, a first layer, a second layer, and a third layer. The first layer is positioned between the first electrode and the light-emitting layer. The third layer is positioned between the first layer and the light-emitting layer. The second layer is positioned between the first layer and the third layer. The first layer includes a first organic compound. The second layer includes a second organic compound. The third layer includes a third organic compound. The ordinary refractive index of the second organic compound is higher than the ordinary refractive index of the first organic and the ordinary refractive index of the third organic compound.

公开(公告)号：US20220348534A1

公开(公告)日：2022-11-03

申请号：US17706887

申请日：2022-03-29

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Tomohiro KUBOTA ,  Takao TOSU ,  Takeyoshi WATABE ,  Airi UEDA ,  Yuta KAWANO ,  Nobuharu OHSAWA ,  Satoshi SEO

IPC: C07C211/61 ,  H01L51/00

Abstract: An organic compound having a hole-transport property and a low refractive index is provided. An organic compound represented by General Formula (G1) is provided. In the formula, Ar12 represents an aryl group having 6 to 10 carbon atoms in a ring and includes at least one branched-chain or cyclic alkyl group having 3 to 12 carbon atoms. The total number of carbon atoms of the branched-chain or cyclic alkyl group having 3 to 12 carbon atoms in Ar12 is 6 to 36. Ar11 and Ar21 each represent a substituted or unsubstituted arylene group having 6 to 13 carbon atoms in a ring. Ar22 represents a substituted or unsubstituted aryl group having 6 to 10 carbon atoms in a ring. In addition, n and m each independently represent an integer of 0 or 1. Ar1 represents a phenyl group including at least one alkyl group having 1 to 6 carbon atoms. Ar2 represents a phenyl group including at least one alkyl group having 1 to 6 carbon atoms, or an alkyl group having 1 to 4 carbon atoms.

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：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.

公开(公告)号：US20210214381A1

公开(公告)日：2021-07-15

申请号：US17137941

申请日：2020-12-30

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Tomoya YAMAGUCHI ,  Hideko YOSHIZUMI ,  Yuta KAWANO ,  Takeyoshi WATABE ,  Satoshi SEO

IPC: C07F15/00 ,  H01L51/00

Abstract: Providing a novel organometallic complex represented by Structure Formula (G1). A1 to A4 independently represent an alkyl group having 1 to 6 carbon atoms or a cycloalkyl group having 3 to 6 carbon atoms. R1 to R5 independently represent any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, and a cyano group, wherein at least one of R1 to R5 represents a cyano group. R11 to R14 independently represent an alkyl group having 2 to 6 carbon atoms or a cycloalkyl group having 3 to 6 carbon atoms. R15 and R16 independently represent any one of hydrogen, a methyl group, and an ethyl group. Note that R11 and R12 may be bonded to each other to form a ring, and R13 and R14 may be bonded to each other to form a ring.

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：US20240049578A1

公开(公告)日：2024-02-08

申请号：US18247672

申请日：2021-09-27

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takeyoshi WATABE ,  Airi UEDA ,  Yuta KAWANO ,  Tomohiro KUBOTA ,  Nobuharu OHSAWA ,  Satoshi SEO

IPC: H10K59/80 ,  H10K59/38

CPC classification number: H10K59/879 ,  H10K59/38 ,  H10K50/15

Abstract: A light-emitting device with low power consumption is provided. The light-emitting apparatus including a first light-emitting device and a first color conversion layer. The first light-emitting device includes an anode, a cathode, and an EL layer between the anode and the cathode. The EL layer includes a layer including a material with an ordinary refractive index higher than or equal to 1.50 and lower than 1.75 with respect to light with a wavelength longer than or equal to 455 nm and shorter than or equal to 465 nm. The first color conversion layer includes a first substance that absorbs light and emits light. An ordinary refractive index of the first color conversion layer with respect to light with a wavelength longer than or equal to 455 nm and shorter than or equal to 465 nm is higher than or equal to 1.40 and lower than or equal to 2.10. The first color conversion layer is on an optical path of the light emitted from the first light-emitting device to an outside of the light-emitting apparatus.

公开(公告)号：US20230276647A1

公开(公告)日：2023-08-31

申请号：US18005981

申请日：2021-07-19

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

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

IPC: H10K50/15 ,  H10K50/858 ,  H10K85/60 ,  H10K85/30

CPC classification number: H10K50/156 ,  H10K50/858 ,  H10K85/633 ,  H10K85/636 ,  H10K85/657 ,  H10K85/6576 ,  H10K85/6572 ,  H10K85/654 ,  H10K85/342 ,  H10K2101/40

Abstract: A light-emitting device with high emission efficiency is provided. A light-emitting device with a low driving voltage is provided. The light-emitting device includes a first electrode, a first layer over the first electrode, a second layer over the first layer, a light-emitting layer over the second layer, and a second electrode over the light-emitting layer. The first layer includes a first organic compound, and the second layer includes a second organic compound. The proportion of carbon atoms forming bonds by the sp3 hybrid orbitals to the total number of carbon atoms in the first organic compound is higher than or equal to 23 percent and lower than or equal to 55 percent. The second organic compound contains fluorine.

公开(公告)号：US20210363151A1

公开(公告)日：2021-11-25

申请号：US17058435

申请日：2019-05-21

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi SEO ,  Satomi WATABE ,  Hideko YOSHIZUMI ,  Hiromitsu KIDO ,  Toshiki SASAKI ,  Akira NAGASAKA ,  Yuta KAWANO

IPC: C07D491/048 ,  C07D513/04 ,  C07D519/00 ,  H01L51/00

Abstract: A benzofuropyrimidine derivative or benzothienopyrimidine derivative that is a novel organic compound is provided. An organic compound represented by General Formula (G1) below. Q represents oxygen or sulfur. Ar1, Ar2, Ar3, and Ar4 each independently represent an aromatic hydrocarbon ring, and the number of carbon atoms included in the aromatic hydrocarbon ring is 6 to 25. m and n are each 0 or 1. A is a group having 12 to 100 carbon atoms in total and includes one or more of a benzene ring, a naphthalene ring, a fluorene ring, a phenanthrene ring, a triphenylene ring, a heteroaromatic ring including a dibenzothiophene ring, a heteroaromatic ring including a dibenzofuran ring, a heteroaromatic ring including a carbazole ring, a benzimidazole ring, and a triphenylamine structure.

公开(公告)号：US20230337453A1

公开(公告)日：2023-10-19

申请号：US18008868

申请日：2021-06-03

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

IPC: H10K50/13 ,  H10K50/858 ,  H10K59/121

CPC classification number: H10K50/13 ,  H10K50/858 ,  H10K59/1213 ,  H10K2102/3026

Abstract: A novel optical functional device that is highly convenient, useful, or reliable is provided. A light-emitting device includes a first electrode, a second electrode, and an EL layer. The first electrode has a first transmittance; the second electrode overlaps with the first electrode. The second electrode has a second transmittance higher than the first transmittance. The EL layer is interposed between the first electrode and the second electrode and includes a first region, a second region, and a third region. The first region is interposed between the second region and the third region. The second region is interposed between the first electrode and the first region and has a first refractive index. The third region is interposed between the first region and the second electrode and has a second refractive index. The second refractive index is lower than the first refractive index. The EL layer includes a first unit, a second unit, and an intermediate layer. The intermediate layer is interposed between the first unit and the second unit and has a function of supplying a hole to one of the first unit and the second unit and supplying an electron to the other.