公开(公告)号：US20150073147A1

公开(公告)日：2015-03-12

申请号：US14483743

申请日：2014-09-11

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hideko INOUE ,  Hiroki SUZUKI ,  Hiromi SEO ,  Tatsuyoshi TAKAHASHI ,  Satoshi SEO

IPC: H01L51/00

CPC classification number: H01L51/0072 ,  H01L51/0074 ,  H01L51/5016

Abstract: A novel organic compound is provided. In addition, a novel organic compound with high heat resistance is provided. In the organic compound, a dibenzoquinoxaline skeleton and a 4,4-bidibenzofuran skeleton or a 4,4′-bidibezothiophene skeleton are connected to each other through an arylene group.

Abstract translation: 提供了一种新颖的有机化合物。 另外，提供了具有高耐热性的新型有机化合物。 在有机化合物中，二苯并喹喔啉骨架和4,4'-二苯并呋喃骨架或4,4'-二溴噻吩骨架通过亚芳基彼此连接。

公开(公告)号：US20150005496A1

公开(公告)日：2015-01-01

申请号：US14313294

申请日：2014-06-24

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hideko INOUE ,  Miki KANAMOTO ,  Hiromi SEO ,  Tatsuyoshi TAKAHASHI ,  Satoshi SEO

IPC: H01L51/00

CPC classification number: H01L51/0085 ,  C07F15/00 ,  C07F15/0033 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1029 ,  C09K2211/1044 ,  C09K2211/1059 ,  C09K2211/185 ,  H01L51/5016

Abstract: Provided as a novel substance is a long-lifetime organometallic iridium complex emitting yellow light with high emission efficiency. The organometallic iridium complex is represented by General Formula (G1) and has a structure in which a phenyl group whose 2-position and 6-position are each substituted by an alkyl group is bonded to the 4-position of pyrimidine. In General Formula (G1), R1 and R2 each independently represent a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms.

Abstract translation: 作为一种新型物质提供长寿命有机金属铱络合物，发射具有高发射效率的黄光。 有机金属铱络合物由通式（G1）表示，其中2位和6位的苯基均被烷基取代的结构键合到嘧啶的4-位上。 在通式（G1）中，R 1和R 2各自独立地表示取代或未取代的碳原子数1〜6的烷基。

公开(公告)号：US20250048926A1

公开(公告)日：2025-02-06

申请号：US18805886

申请日：2024-08-15

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hideko INOUE ,  Miki Kanamoto ,  Hiromi Seo ,  Satoshi Seo ,  Tatsuyoshi Takahashi ,  Tomoka Nakagawa

IPC: H10K85/60 ,  C07D491/048 ,  H10K50/11 ,  H10K85/30 ,  H10K101/00 ,  H10K101/10

Abstract: Alight-emitting element having high emission efficiency is provided. A light-emitting element having a low driving voltage is provided. A novel compound which can be used for a transport layer or as a host material or a light-emitting material of a light-emitting element is provided. A novel compound with a benzofuropyrimidine skeleton is provided. Also provided is a light-emitting element which includes the compound with the benzofuropyrimidine skeleton between a pair of electrodes.

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：US20190189949A1

公开(公告)日：2019-06-20

申请号：US16283962

申请日：2019-02-25

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Satoko SHITAGAKI ,  Satoshi SEO ,  Nobuharu OHSAWA ,  Hideko INOUE ,  Masahiro TAKAHASHI ,  Kunihiko SUZUKI

IPC: H01L51/50 ,  H01L51/00 ,  H01L51/52 ,  C09K11/02 ,  C09K11/06 ,  H05B33/14

CPC classification number: H01L51/5016 ,  C09K11/025 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1044 ,  C09K2211/185 ,  H01L51/0052 ,  H01L51/0056 ,  H01L51/0058 ,  H01L51/006 ,  H01L51/0061 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/0085 ,  H01L51/5056 ,  H01L51/5072 ,  H01L51/5088 ,  H01L51/5092 ,  H01L51/5218 ,  H01L51/5234 ,  H01L2251/55 ,  H05B33/14

Abstract: Provided is a light-emitting element with high external quantum efficiency, or a light-emitting element with a long lifetime. The light-emitting element includes, between a pair of electrodes, a light-emitting layer including a guest material and a host material, in which an emission spectrum of the host material overlaps with an absorption spectrum of the guest material, and phosphorescence is emitted by conversion of an excitation energy of the host material into an excitation energy of the guest material. By using the overlap between the emission spectrum of the host material and the absorption spectrum of the guest material, the energy smoothly transfers from the host material to the guest material, so that the energy transfer efficiency of the light-emitting element is high. Accordingly, a light-emitting element with high external quantum efficiency can be achieved.

公开(公告)号：US20180212154A1

公开(公告)日：2018-07-26

申请号：US15934070

申请日：2018-03-23

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei Yamazaki ,  Satoshi SEO ,  Nobuharu OHSAWA ,  Satoko SHITAGAKI ,  Hideko INOUE ,  Hiroshi KADOMA ,  Harue OSAKA ,  Kunihiko SUZUKI ,  Yasuhiko TAKEMURA

IPC: H01L51/00

CPC classification number: H01L51/0059 ,  H01L51/0067 ,  H01L2251/5384 ,  H01L2251/552

Abstract: A light-emitting element includes a light-emitting layer including a guest, an n-type host and a p-type host between a pair of electrodes, where the difference between the energy difference between a triplet excited state and a ground state of the n-type host (or p-type host) and the energy difference between a triplet excited state and a ground state of the guest is 0.15 eV or more. Alternatively, in such a light-emitting element, the LUMO level of the n-type host is higher than the LUMO level of the guest by 0.1 eV or more, or the HOMO level of the p-type host is lower than the HOMO level of the guest by 0.1 eV or more.

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.

公开(公告)号：US20170294594A1

公开(公告)日：2017-10-12

申请号：US15634114

申请日：2017-06-27

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hideko INOUE ,  Tomohiro KUBOTA ,  Satoshi SEO ,  Hayato YAMAWAKI ,  Yasushi KITANO

IPC: H01L51/00 ,  C09K11/06 ,  C07D409/10

CPC classification number: H01L51/0074 ,  C07D409/10 ,  C09K11/06 ,  C09K2211/1018 ,  H01L51/0072 ,  H01L51/5012

Abstract: A dibenzo[f,h]quinoxaline derivative in which impurities are reduced and a novel method of synthesizing the dibenzo[f,h]quinoxaline derivative in which impurities are reduced are provided. In addition, a light-emitting element, a light-emitting device, an electronic appliance, or a lighting device with high emission efficiency and high reliability in which the dibenzo[f,h]quinoxaline derivative is used as an EL material is provided. In the synthesis method, a 2-(chloroaryl)dibenzo[f,h]quinoxaline derivative is used as a synthetic intermediate in a synthetic pathway so that an impurity contained in a final product can be removed easily by purification by sublimation.

公开(公告)号：US20170288154A1

公开(公告)日：2017-10-05

申请号：US15471017

申请日：2017-03-28

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi SEO ,  Hideko INOUE ,  Miki KURIHARA ,  Yui YAMADA ,  Tatsuyoshi TAKAHASHI ,  Hiromitsu KIDO

IPC: H01L51/00 ,  C07F15/00 ,  C09K11/06 ,  H01L51/50

CPC classification number: H01L51/0085 ,  C07F15/0033 ,  C07F15/004 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1044 ,  C09K2211/1059 ,  C09K2211/185 ,  H01L51/5004 ,  H01L51/5012 ,  H01L51/5016 ,  H01L2251/552

Abstract: A novel organometallic complex with high reliability is provided. A light-emitting element includes an EL layer between a pair of electrodes. The EL layer includes at least a light-emitting layer. The light-emitting layer contains an organometallic complex. The organometallic complex includes a first ligand and a second ligand which are coordinated to a central metal. The HOMO is distributed over the first ligand, and the LUMO is distributed over the second ligand. The first ligand and the second ligand are cyclometalated ligands.