公开(公告)号：US20220029134A1

公开(公告)日：2022-01-27

申请号：US17299386

申请日：2019-11-27

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

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

IPC: H01L51/52 ,  C09K11/06

Abstract: A novel light-emitting device with a microcavity structure which can improve the emission efficiency compared to the conventional one is provided. In a light-emitting device with a microcavity structure that emits light in a near-infrared range, reflectance of one or both of a first electrode (reflective electrode) and a second electrode (semi-transmissive and semi-reflective electrode) with respect to light in a near-infrared range (e.g., light with a wavelength of 850 nm) is higher than the reflectance thereof with respect to light in a visible light range (greater than or equal to 400 nm and less than 750 nm).

公开(公告)号：US20210317069A1

公开(公告)日：2021-10-14

申请号：US17213709

申请日：2021-03-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

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

IPC: C07C211/56 ,  H01L51/00

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：US20210057668A1

公开(公告)日：2021-02-25

申请号：US17094374

申请日：2020-11-10

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Satoshi SEO ,  Nobuharu OHSAWA ,  Takeyoshi WATABE

IPC: H01L51/50

Abstract: Provided is a light-emitting element including a fluorescence-emitting material with high emission efficiency. The light-emitting element includes a pair of electrodes and an EL layer between the pair of electrodes. The EL layer includes a first organic compound, a second organic compound, and a guest material. The first organic compound has a function of emitting a thermally activated delayed fluorescence at room temperature. The guest material has a function of emitting fluorescence. A HOMO level of the first organic compound higher than or equal to a HOMO level of the second organic compound. A LUMO level of the first organic compound is lower than or equal to a LUMO level of the second organic compound.

公开(公告)号：US20210005814A1

公开(公告)日：2021-01-07

申请号：US16919291

申请日：2020-07-02

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

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

IPC: H01L51/00 ,  C07C211/61 ,  C09K11/06

Abstract: A material for a hole-transport layer includes a monoamine compound. The first aromatic group, the second aromatic group, and the third aromatic group are bonded to the nitrogen atom of the monoamine compound. The first and second aromatic groups each independently include 1 to 3 benzene rings. One or both of the first and second aromatic groups have one or more hydrocarbon groups each having 1 to 12 carbon atoms each forming a bond only by the sp3 hybrid orbitals. The total number of the carbon atoms in the hydrocarbon group in the first or second aromatic group is 6 or more. The total number of the carbon atoms in all of the hydrocarbon groups in the first and second aromatic groups is 8 or more. The third aromatic group is a substituted or unsubstituted monocyclic condensed ring or a substituted or unsubstituted bicyclic or tricyclic condensed ring.

公开(公告)号：US20200176692A1

公开(公告)日：2020-06-04

申请号：US16613245

申请日：2018-05-11

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takeyoshi WATABE ,  Satoshi SEO

IPC: H01L51/00 ,  C09K11/06 ,  C07F15/00

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：US20200013967A1

公开(公告)日：2020-01-09

申请号：US16468608

申请日：2017-12-08

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yui YAMADA ,  Hideko YOSHIZUMI ,  Takeyoshi WATABE ,  Tatsuyoshi TAKAHASHI ,  Hiromitsu KIDO ,  Satoshi SEO

IPC: H01L51/00 ,  C07F15/00 ,  C09K11/06

Abstract: A novel organometallic complex with high emission efficiency is provided. The organometallic complex, which is represented by General Formula (G1), includes iridium and a ligand including an aryl group including a cyano group at the 1-position of a benzimidazole skeleton and a phenyl group at the 2-position of the benzimidazole skeleton. (In the formula, Ar1 represents an aryl group having one or more substituents and 6 to 13 carbon atoms, and Ar1 includes at least one cyano group as the substituent. Each of R1 to R8 separately represents any of hydrogen, 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 aryl group having 6 to 13 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 12 carbon atoms, and a cyano group.)

公开(公告)号：US20190207124A1

公开(公告)日：2019-07-04

申请号：US16291710

申请日：2019-03-04

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Miki Kanamoto ,  Takeyoshi WATABE ,  Hideko INOUE ,  Satoshi SEO ,  Satomi MITSUMORI ,  Tatsuyoshi TAKAHASHI

IPC: H01L51/00 ,  C09K11/06 ,  C07F15/00 ,  C07D491/048

CPC classification number: H01L51/0072 ,  C07D491/048 ,  C07F15/0033 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1044 ,  C09K2211/1048 ,  C09K2211/1059 ,  C09K2211/185 ,  H01L27/322 ,  H01L27/323 ,  H01L51/0071 ,  H01L51/0085 ,  H01L51/5012 ,  H01L51/5016 ,  H01L51/5056 ,  H01L51/5072

Abstract: Provided is a novel compound or a light-emitting element with high emission efficiency. The provided novel compound includes a bicarbazole skeleton and a benzofuropyrimidine skeleton or a benzothienopyrimidine skeleton. The provided light-emitting element includes the compound.

公开(公告)号：US20170213989A1

公开(公告)日：2017-07-27

申请号：US15404329

申请日：2017-01-12

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Toshiaki TSUNOI ,  Hideko INOUE ,  Takahiro ISHISONE ,  Takeyoshi WATABE

IPC: H01L51/00 ,  C09K11/06 ,  C07F15/00

CPC classification number: H01L51/0085 ,  C07F15/0033 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1044 ,  C09K2211/1059 ,  C09K2211/185 ,  H01L51/5016 ,  H01L51/504 ,  H01L2251/5384 ,  H01L2251/552

Abstract: A novel organometallic complex having a low HOMO level and emitting blue to green phosphorescence is provided. The organometallic complex includes a structure represented by General Formula (G1). The organometallic complex includes iridium and a ligand. The ligand has an imidazole skeleton including nitrogen bonded to the iridium, and an N-carbazolyl group bonded to the 2-position of the imidazole skeleton through a phenylene group. The phenylene group is bonded to the iridium. In the formula, each of R1 to R14 independently represents any of hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted cycloalkyl group having 5 to 8 carbon atoms, a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, and a substituted or unsubstituted heteroaryl group having 3 to 12 carbon atoms.

公开(公告)号：US20130270525A1

公开(公告)日：2013-10-17

申请号：US13633900

申请日：2012-10-03

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hidekazu MIYAIRI ,  Takeyoshi WATABE ,  Takashi SHIMAZU

IPC: H01L29/786 ,  H01L51/52

CPC classification number: H01L29/78669 ,  H01L27/1288 ,  H01L29/78678 ,  H01L29/78696 ,  H01L51/52

Abstract: A thin film transistor includes a gate insulating layer covering a gate electrode, a semiconductor layer in contact with the gate insulating layer, and impurity semiconductor layers which are in contact with part of the semiconductor layer and which form a source region and a drain region. The semiconductor layer includes a microcrystalline semiconductor layer formed on the gate insulating layer and a microcrystalline semiconductor region containing nitrogen in contact with the microcrystalline semiconductor layer. The thin film transistor in which off-current is small and on-current is large can be manufactured with high productivity.

Abstract translation: 薄膜晶体管包括覆盖栅电极的栅极绝缘层，与栅极绝缘层接触的半导体层和与半导体层的一部分接触并形成源极区域和漏极区域的杂质半导体层。 半导体层包括形成在栅极绝缘层上的微晶半导体层和含有与微晶半导体层接触的氮的微晶半导体区域。 可以以高生产率制造截止电流小且导通电流大的薄膜晶体管。