公开(公告)号：US20210284590A1

公开(公告)日：2021-09-16

申请号：US17256798

申请日：2020-02-05

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroki SUZUKI ,  Satoshi SEO ,  Hiroshi KADOMA ,  Tsunenori SUZUKI ,  Naoaki HASHIMOTO

IPC: C07C15/28 ,  H01L51/00

Abstract: A novel compound for a host material is provided. A compound for a host material that is capable of increasing the lifetime of a light-emitting device is provided. A light-emitting device with a long lifetime is provided. A material whose thermophysical properties such as a glass transition temperature are high is provided. An anthracene compound for a host material represented by General Formula (G1) below is provided. (Note that in General Formula (G1), R1 to R7 each independently represent hydrogen or an aryl group having 1 to 25 carbon atoms.)

公开(公告)号：US20210175435A1

公开(公告)日：2021-06-10

申请号：US16764715

申请日：2018-11-12

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroshi KADOMA ,  Tsunenori SUZUKI ,  Naoaki HASHIMOTO ,  Yusuke TAKITA ,  Satoshi SEO

IPC: H01L51/00 ,  C07D209/80 ,  C09K11/06

Abstract: An object is to provide a novel organic compound. Another object is to provide a novel light-emitting device. Another object is to provide a light-emitting device with favorable emission efficiency. Another object is to provide a light-emitting device with a favorable lifetime. Another object is to provide a light-emitting device with a low driving voltage. A dibenzo [c,g]carbazole derivative represented by the following general formula (G1) and a light-emitting device using it are provided. Note that at least one of R11 to R22 represents a substituent that has 14 to 60 carbon atoms in total and contains a condensed tricyclic to hexacyclic aromatic hydrocarbon skeleton, and the others independently represent any of hydrogen, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, and a substituted or unsubstituted aryl group having 6 to 25 carbon atoms.

公开(公告)号：US20200216428A1

公开(公告)日：2020-07-09

申请号：US16636732

申请日：2018-07-30

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kyoko Takeda ,  Harue OSAKA ,  Satoshi SEO ,  Tsunenori SUZUKI ,  Naoaki HASHIMOTO

IPC: C07D407/14 ,  C07D209/82 ,  H01L51/00

Abstract: A novel compound is provided. In addition, a light-emitting element with high emission efficiency and a long lifetime is provided. An organic compound represented by General Formula (G0), including a dibenzocarbazole skeleton and two amine skeletons. In General Formula (G0), A represents a substituted or unsubstituted dibenzocarbazole skeleton. The dibenzocarbazole skeleton and the amine skeletons may be bonded to each other through or not through an arylene group. In addition, a light-emitting element including the compound is provided.

公开(公告)号：US20190393420A1

公开(公告)日：2019-12-26

申请号：US16486181

申请日：2018-03-08

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kyoko TAKEDA ,  Harue OSAKA ,  Satoshi SEO ,  Tsunenori SUZUKI ,  Naoaki HASHIMOTO ,  Yusuke TAKITA

IPC: H01L51/00 ,  C07D493/04 ,  C09K11/06

Abstract: A novel organic compound is provided. An organic compound that emits light with high chromaticity is provided. An organic compound that emits blue light with high chromaticity is provided. An organic compound with high emission efficiency is provided. An organic compound having an excellent hole-transport property is provided. An organic compound having high reliability is provided. An organic compound that has a naphtho[2,3-b;7,6-b′]bisbenzofuran skeleton or a naphtho[2,3-b;7,6-b′]bisbenzothiophene skeleton and has a molecular weight of less than or equal to 5000 is provided. The present inventors have found that the organic compound is a significantly effective skeleton as a luminophor of a light-emitting element. The organic compound has high emission efficiency and exhibits favorable blue light emission; thus, a light-emitting element using the organic compound can be a blue light-emitting element with high emission efficiency.

公开(公告)号：US20190036036A1

公开(公告)日：2019-01-31

申请号：US16151659

申请日：2018-10-04

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kyoko Takeda ,  Harue OSAKA ,  Yusuke TAKITA ,  Naoaki HASHIMOTO ,  Tsunenori SUZUKI ,  Kunihiko SUZUKI ,  Satoshi SEO

IPC: H01L51/00 ,  C09K11/06 ,  H05B33/14 ,  C07D209/86 ,  H01L51/50

CPC classification number: H01L51/0072 ,  C07D209/86 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1011 ,  C09K2211/1018 ,  H01L51/0052 ,  H01L51/5012 ,  H01L51/5028 ,  H05B33/14

Abstract: To provide a novel fluorescent organic compound (a fluorescent compound). The organic compound is a substance that emits fluorescence and an organic compound (a host material) in which TTA can occur efficiently. In the organic compound, triplet excitons, which do not contribute to light emission, can be efficiently converted into singlet excitons. The use of such an organic compound can increase emission efficiency of a light-emitting element.

公开(公告)号：US20170062735A1

公开(公告)日：2017-03-02

申请号：US15251364

申请日：2016-08-30

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kyoko TAKEDA ,  Hiroshi KADOMA ,  Tsunenori SUZUKI ,  Naoaki HASHIMOTO ,  Satoshi SEO

IPC: H01L51/00 ,  C09K11/02 ,  C07D209/80 ,  C07D209/86 ,  C09K11/06

CPC classification number: H01L51/0072 ,  C07D209/80 ,  C07D209/86 ,  C09K11/02 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1011 ,  C09K2211/1029 ,  H01L51/0055 ,  H01L51/5012 ,  Y02P20/582

Abstract: A novel benzotriphenylene compound that can be suitably used as a host material in the case where a light-emitting substance is a fluorescent material. The benzotriphenylene compound is represented by General Formula (G1-1). In General Formula (G1-1), A represents a condensed ring. Each of R1 to R9 and R11 to R14 independently represents any of hydrogen, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, and a substituted or unsubstituted aryl group having 6 to 13 carbon atoms. Ar represents an arylene group having 6 to 13 carbon atoms.

公开(公告)号：US20160336519A1

公开(公告)日：2016-11-17

申请号：US15154121

申请日：2016-05-13

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi Seo ,  Tsunenori SUZUKI ,  Naoaki HASHIMOTO

IPC: H01L51/00

CPC classification number: H01L51/0072 ,  H01L51/0052 ,  H01L51/0067 ,  H01L51/5004 ,  H01L51/5012 ,  H01L51/506 ,  H01L51/508 ,  H01L51/524 ,  H01L2251/552

Abstract: Provided is a novel light-emitting element, a light-emitting element with a long lifetime, or a light-emitting element with high emission efficiency. The light-emitting element includes an EL layer between a pair of electrodes. The EL layer includes at least a light-emitting layer containing a fluorescent substance and a host material, a first electron-transport layer containing a first electron-transport material, and a second electron-transport layer containing a second electron-transport material, which are in contact with each other and in this order. The LUMO level of each of the host material and the second electron-transport material is higher than the LUMO level of the first electron-transport material.

Abstract translation: 提供一种新颖的发光元件，寿命长的发光元件或发光效率高的发光元件。 发光元件包括一对电极之间的EL层。 EL层至少包括含有荧光物质和主体材料的发光层，含有第一电子传输材料的第一电子传输层和含有第二电子传输材料的第二电子传输层，其中 按照这个顺序相互联系。 主体材料和第二电子传输材料中的每一个的LUMO能级高于第一电子传输材料的LUMO能级。

公开(公告)号：US20160118605A1

公开(公告)日：2016-04-28

申请号：US14924027

申请日：2015-10-27

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Sachiko KAWAKAMI ,  Rina NAKAMURA ,  Nozomi KOMATSU ,  Naoaki HASHIMOTO ,  Toshiki HAMADA ,  Tsunenori SUZUKI ,  Satoshi SEO

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

CPC classification number: H01L51/0085 ,  C07F15/0033 ,  C09K11/06 ,  C09K2211/185 ,  H01L51/0025 ,  H01L51/5016 ,  H01L2251/5384

Abstract: A long-life light-emitting element is provided by reducing a specific kind of impurity in the light-emitting element, particularly an impurity originating in an iridium complex. The light-emitting element includes an iridium complex. The iridium complex includes an iridium metal and a ligand coordinated to the iridium metal. In analysis of the light-emitting element by liquid chromatography mass spectrometry using a chromatograph of a photodiode array detector, the proportion of the peak area of a ligand not coordinated to the iridium metal to the peak area of the iridium complex is greater than or equal to 0% and less than or equal to 10%.

Abstract translation: 通过减少发光元件中的特定种类的杂质，特别是源于铱络合物的杂质，提供长寿命的发光元件。 发光元件包括铱络合物。 铱络合物包括铱金属和与铱金属配位的配体。 在通过使用光电二极管阵列检测器的色谱仪的液相色谱质谱法分析发光元件时，不与铱金属配位的配体的峰面积与铱络合物的峰面积的比例大于或等于 至0％且小于或等于10％。

公开(公告)号：US20250122162A1

公开(公告)日：2025-04-17

申请号：US18897912

申请日：2024-09-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Masanori TAKEDA ,  Kazuki KAJIYAMA ,  Sachiko KAWAKAMI ,  Naoaki HASHIMOTO ,  Tsunenori SUZUKI

IPC: C07D307/91 ,  C07C211/61 ,  C07D333/76 ,  C07D335/02 ,  H10K50/11 ,  H10K59/35

Abstract: An organic compound that can provide a light-emitting device having a high hole-transport property and high reliability. An organic compound represented by General Formula (G1) shown below is provided. In General Formula (G1), X represents a sulfur atom or an oxygen atom, each of R1 to R22 independently represents any one of hydrogen, halogen, a nitrile group, an alkenyl group, a vinyl group, an alkynyl group, a straight-chain alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 10 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, an alkylsilyl group having 3 to 12 carbon atoms, an aryl group having 6 to 30 carbon atoms, and a heteroaryl group having 2 to 30 carbon atoms. At least one of R16 to R22 represents a naphthyl group, n represents an integer of 0 to 4, and Ar1 represents a fluorenyl group or a spirofluorenyl group.

公开(公告)号：US20250072260A1

公开(公告)日：2025-02-27

申请号：US18810137

申请日：2024-08-20

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Shunpei YAMAZAKI ,  Naoaki HASHIMOTO ,  Daiki NAKAMURA

IPC: H10K59/80 ,  H10K102/00

Abstract: To provide a display apparatus with high display quality. To provide a display apparatus which includes first and second light-emitting devices and in which the first and second light-emitting devices include a common electrode with a light-transmitting property, the first light-emitting device includes a first electrode, a first EL layer, and a first auxiliary electrode with a light-transmitting property, the second light-emitting device includes a second electrode, a second EL layer, and a second auxiliary electrode with a light-transmitting property, the first EL layer is between the first electrode and the common electrode, the second EL layer is between the second electrode and the common electrode, the first auxiliary electrode is between the first EL layer and the common electrode, the second auxiliary electrode is between the second EL layer and the common electrode, and the first auxiliary electrode has a larger thickness than the second auxiliary electrode.