公开(公告)号：US20240421445A1

公开(公告)日：2024-12-19

申请号：US18718903

申请日：2022-12-02

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Tatsuyoshi TAKAHASHI ,  Ryota TAJIMA ,  Kazutaka KURIKI ,  Mayumi MIKAMI

IPC: H01M50/533 ,  H01M50/105 ,  H01M50/178

Abstract: To provide a battery in which electrode distortion is suppressed in connecting an electrode terminal and a current collector exposed portion. The battery includes an electrode, an exterior body surrounding the electrode, and a lead extending from the inside to the outside of the exterior body. The electrode includes a current collector and an active material layer. The electrode includes a first region where the active material layer is provided over the current collector, and a second region where the current collector is exposed. The second region of the electrode includes a third region where the current collector is folded. The lead is connected to the electrode in the third region.

公开(公告)号：US20240292646A1

公开(公告)日：2024-08-29

申请号：US18647902

申请日：2024-04-26

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi SEO ,  Tatsuyoshi TAKAHASHI ,  Takeyoshi WATABE ,  Satomi MITSUMORI

IPC: H10K50/12 ,  C07F15/00 ,  C09K11/06 ,  H10K50/11 ,  H10K50/15 ,  H10K50/16 ,  H10K59/12 ,  H10K59/38 ,  H10K59/40 ,  H10K85/30 ,  H10K85/60 ,  H10K101/00 ,  H10K101/10 ,  H10K101/30 ,  H10K101/40

CPC classification number: H10K50/121 ,  C07F15/0033 ,  C09K11/06 ,  H10K50/11 ,  H10K50/15 ,  H10K50/16 ,  H10K59/12 ,  H10K59/38 ,  H10K59/40 ,  C09K2211/1007 ,  C09K2211/1011 ,  C09K2211/1059 ,  C09K2211/185 ,  H10K85/342 ,  H10K85/615 ,  H10K85/633 ,  H10K85/636 ,  H10K85/654 ,  H10K85/657 ,  H10K85/6572 ,  H10K85/6576 ,  H10K2101/10 ,  H10K2101/30 ,  H10K2101/40 ,  H10K2101/80 ,  H10K2101/90

Abstract: A light-emitting element with high emission efficiency. The light-emitting element includes a first organic compound, a second organic compound, and a guest material. The LUMO level of the first organic compound is lower than the LUMO level of the second organic compound. The HOMO level of the first organic compound is lower than the HOMO level of the second organic compound. The HOMO level of the guest material is higher than the HOMO level of the second organic compound. The energy difference between the LUMO level of the guest material and the HOMO level of the guest material is larger than the energy difference between the LUMO level of the first organic compound and the HOMO level of the second organic compound. The guest material has a function of converting triplet excitation energy into light emission. The first organic compound and the second organic compound form an exciplex.

公开(公告)号：US20240047655A1

公开(公告)日：2024-02-08

申请号：US18257335

申请日：2021-12-03

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kazutaka KURIKI ,  Taisuke NAKAO ,  Teruaki OCHIAI ,  Tatsuyoshi TAKAHASHI ,  Shunpei YAMAZAKI

IPC: H01M4/36 ,  H01M4/587 ,  H01M4/133 ,  H01M4/38 ,  H01M4/134 ,  H01M10/0568 ,  H01M10/0525

CPC classification number: H01M4/366 ,  H01M4/587 ,  H01M4/133 ,  H01M4/386 ,  H01M4/134 ,  H01M10/0568 ,  H01M10/0525 ,  H01M2004/027

Abstract: A secondary battery has a high capacity and little deterioration can be provided. Alternatively, a novel power storage device is provided. The secondary battery includes a positive electrode and a negative electrode. The negative electrode includes a first active material, a second active material, and a graphene compound. At least part of a surface of the first active material includes a region covered with the second active material. A surface of the second active material and at least part of the surface of the first active material each include a region covered with the graphene compound. The first active material includes graphite. The second active material includes silicon. The capacity of the positive electrode is greater than or equal to 50% and less than 100% of the capacity of the negative electrode.

公开(公告)号：US20230246198A1

公开(公告)日：2023-08-03

申请号：US17766336

申请日：2020-09-29

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kaori OGITA ,  Hiroshi KADOMA ,  Tomoya HIROSE ,  Yumiko YONEDA ,  Yuji IWAKI ,  Tatsuyoshi TAKAHASHI ,  Shunpei YAMAZAKI ,  Mayumi MIKAMI ,  Kazuki TANEMURA

IPC: H01M4/62 ,  H01M4/525 ,  H01M4/131 ,  H01M10/0525

CPC classification number: H01M4/628 ,  H01M4/525 ,  H01M4/131 ,  H01M10/0525 ,  H01M2004/028

Abstract: A positive electrode for a secondary battery having excellent cycle performance is provided. The positive electrode for a secondary battery includes a positive electrode current collector layer, a base film, a positive electrode active material layer, and a cap layer; the base film contains titanium nitride; the positive electrode active material layer contains lithium cobalt oxide; and the cap layer contains titanium oxide. The use of titanium nitride for the base film can inhibit oxidation of the positive electrode current collector and diffusion of metal atoms while ensuring an adequate conductivity. The use of titanium oxide for the cap layer can inhibit a side reaction between the positive electrode active material layer and an electrolyte and collapse of a crystal structure of the electrode active material, improving the cycle performance.

公开(公告)号：US20230165144A1

公开(公告)日：2023-05-25

申请号：US18094154

申请日：2023-01-06

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi Seo ,  Takao HAMADA ,  Tatsuyoshi TAKAHASHI ,  Yasushi KITANO ,  Hiroki SUZUKI ,  Hideko INOUE

IPC: H10K85/60 ,  C07D403/14

CPC classification number: H10K85/6572 ,  C07D403/14 ,  Y02P20/582 ,  H10K85/342

Abstract: To provide a light-emitting element with an improved reliability, a light-emitting element with a high current efficiency (or a high quantum efficiency), and a novel dibenzo[f,h]quinoxaline derivative that is favorably used in a light-emitting element which is one embodiment of the present invention. A light-emitting element includes an EL layer between an anode and a cathode. The EL layer includes a light-emitting layer; the light-emitting layer contains a first organic compound having an electron-transport property and a hole-transport property, a second organic compound having a hole-transport property, and a light-emitting substance; the combination of the first organic compound and the second organic compound forms an exciplex; the HOMO level of the first organic compound is lower than the HOMO level of the second organic compound; and a difference between the HOMO level of the first organic compound and the HOMO level of the second organic compound is less than or equal to 0.4 eV.

公开(公告)号：US20210288280A1

公开(公告)日：2021-09-16

申请号：US17329759

申请日：2021-05-25

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shunsuke HOSOUMI ,  Takahiro ISHISONE ,  Tatsuyoshi TAKAHASHI ,  Satoshi SEO

IPC: H01L51/50

Abstract: A light-emitting element containing a fluorescent material and having high emission efficiency is provided. The light-emitting element contains the fluorescent material and a host material. The host material contains a first organic compound and a second organic compound. The first organic compound and the second organic compound can form an exciplex. The minimum value of a distance between centroids of the fluorescent material and at least one of the first organic compound and the second organic compound is 0.7 nm or more and 5 nm or less.

公开(公告)号：US20200152887A1

公开(公告)日：2020-05-14

申请号：US16473372

申请日：2017-12-15

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Tomoya YAMAGUCHI ,  Hideko YOSHIZUMI ,  Hiromitsu KIDO ,  Tatsuyoshi TAKAHASHI ,  Satoshi SEO

IPC: H01L51/00 ,  C07D491/048

Abstract: A novel compound and a light-emitting element with high emission efficiency and a long lifetime are provided. The novel compound includes a benzofuropyrazine skeleton or a benzothienopyrazine skeleton, and each of a benzene ring and a pyrazine ring in the benzofuropyrazine skeleton or the benzothienopyrazine skeleton independently includes a substituent with a total number of carbon atoms of 6 to 100 inclusive. The light-emitting element includes the compound.

公开(公告)号：US20190067615A1

公开(公告)日：2019-02-28

申请号：US16176018

申请日：2018-10-31

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi SEO ,  Hiromi SEO ,  Tatsuyoshi TAKAHASHI

IPC: H01L51/50 ,  H01L51/00 ,  C09K11/02 ,  C09K11/06

Abstract: To provide a light-emitting element which uses a fluorescent material as a light-emitting substance and has higher luminous efficiency. To provide a light-emitting element which includes a mixture of a thermally activated delayed fluorescent substance and a fluorescent material. By making the emission spectrum of the thermally activated delayed fluorescent substance overlap with an absorption band on the longest wavelength side in absorption by the fluorescent material in an S1 level of the fluorescent material, energy at an S1 level of the thermally activated delayed fluorescent substance can be transferred to the S1 of the fluorescent material. Alternatively, it is also possible that the S1 of the thermally activated delayed fluorescent substance is generated from part of the energy of a T1 level of the thermally activated delayed fluorescent substance, and is transferred to the S1 of the fluorescent material.

公开(公告)号：US20180006232A1

公开(公告)日：2018-01-04

申请号：US15704137

申请日：2017-09-14

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hideko INOUE ,  Yasushi KITANO ,  Hiromi SEO ,  Tatsuyoshi TAKAHASHI ,  Satoshi SEO

IPC: H01L51/00 ,  C07D241/38 ,  C09K11/06 ,  H01L51/50

Abstract: A novel heterocyclic compound is provided. A novel heterocyclic compound that can be used for a light-emitting element is provided. A novel heterocyclic compound that can improve the reliability of a light-emitting element when used for a light-emitting element is provided. A light-emitting element, a light-emitting device, an electronic appliance, or a lighting device which includes the novel heterocyclic compound and is highly reliable is provided. One embodiment of the present invention is a heterocyclic compound represented by a general formula (G0). In the general formula (G0), A represents a dibenzo[f,h]quinoxalinyl group, B represents a substituted or unsubstituted fluorenyl group, and Ar represents a substituted or unsubstituted arylene group having 6 to 25 carbon atoms. A—Ar—B   (G0)

公开(公告)号：US20170373257A1

公开(公告)日：2017-12-28

申请号：US15629128

申请日：2017-06-21

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Tomoka Hara ,  Hideko INOUE ,  Tatsuyoshi TAKAHASHI ,  Satoshi SEO

IPC: H01L51/00 ,  H01L27/32 ,  C09K11/02 ,  C07D409/10 ,  H01L51/56 ,  H01L51/50 ,  H01L51/52

CPC classification number: H01L51/0072 ,  C07D409/10 ,  C09K11/025 ,  H01L27/3262 ,  H01L51/0074 ,  H01L51/5016 ,  H01L51/5028 ,  H01L51/5076 ,  H01L51/508 ,  H01L51/5237 ,  H01L51/56

Abstract: A novel organic compound that is effective in improving the element characteristics and reliability is provided. The organic compound, which is represented by General Formula (G1), has a structure in which a dibenzoquinazoline ring is bonded to a skeleton with a hole-transport property via one or more arylene groups. Any one of R1 to R9 in General Formula (G1) is bonded to any one of R10 to R14 in General Formula (G1-1). Note that n is any of 0 to 3; m is 1 or 2; A represents a single bond, or an arylene group; B represents a ring having a dibenzofuran skeleton, dibenzothiophene skeleton, or carbazole skeleton; and each of R1 to R15 independently represents any of hydrogen, an alkyl group, a cycloalkyl group, and an aryl group.