公开(公告)号：US20170229648A1

公开(公告)日：2017-08-10

申请号：US15446528

申请日：2017-03-01

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Sachiko Kawakami ,  Naoaki Hashimoto ,  Tsunenori Suzuki ,  Satoshi Seo

IPC: H01L51/00 ,  C09K11/06 ,  C07D307/77

CPC classification number: H01L51/006 ,  C07C211/61 ,  C07D307/77 ,  C09K11/06 ,  C09K2211/1011 ,  C09K2211/1022 ,  C09K2211/1088 ,  H01L51/0054 ,  H01L51/0061 ,  H01L51/0073 ,  H01L51/5012

Abstract: An organic compound that emits blue light with high color purity and has a long lifetime is provided as a novel substance. The organic compound is a fluorescent organic compound having a structure in which benzonaphthofuranylamine is bonded to the 1-position and the 6-position of a pyrene skeleton.

公开(公告)号：US12185558B2

公开(公告)日：2024-12-31

申请号：US17431517

申请日：2020-02-12

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi Seo ,  Harue Osaka ,  Naoaki Hashimoto ,  Shunpei Yamazaki

IPC: H10K50/11 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17 ,  H10K101/30 ,  H10K101/40

Abstract: A light-emitting device with a long lifetime is provided. In a light-emitting device that includes an EL layer between a pair of electrodes, a light-emitting layer included in the EL layer has a functional stacked-layer structure, whereby the efficiency and reliability of the light-emitting device can be increased.

公开(公告)号：US20240306408A1

公开(公告)日：2024-09-12

申请号：US18615075

申请日：2024-03-25

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yusuke TAKITA ,  Tsunenori Suzuki ,  Naoaki Hashimoto ,  Takumu Okuyama ,  Satoshi Seo

IPC: H10K50/11 ,  H10K85/60 ,  H10K101/30 ,  H10K101/40

CPC classification number: H10K50/11 ,  H10K85/6574 ,  H10K2101/30 ,  H10K2101/40

Abstract: A novel light-emitting device is provided. Alternatively, a light-emitting device having a long driving lifetime at high temperature is provided. The light-emitting device ncludes an anode, a cathode, and an EL layer positioned between the anode and the cathode. The EL layer includes a first layer, a second layer, a third layer, and a light-emitting layer in this order from the anode side. The first layer includes a first organic compound and a second organic compound. The second layer includes a third organic compound. The third layer includes a fourth organic compound. The light-emitting layer includes a fifth organic compound and an emission center substance. The first organic compound exhibits an electron-accepting property with respect to the second organic compound. A difference between HOMO levels of the fourth organic compound and the fifth organic compound is less than or equal to 0.24 eV.

公开(公告)号：US11985890B2

公开(公告)日：2024-05-14

申请号：US17166217

申请日：2021-02-03

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Sachiko Kawakami ,  Anna Tada ,  Yusuke Takita ,  Tsunenori Suzuki ,  Naoaki Hashimoto ,  Satoshi Seo

IPC: H01L51/50 ,  C07C211/54 ,  C07C211/58 ,  H10K85/60 ,  H10K50/11 ,  H10K50/15 ,  H10K50/16 ,  H10K59/12 ,  H10K59/17 ,  H10K71/00 ,  H10K71/13 ,  H10K101/10 ,  H10K101/30 ,  H10K102/00

CPC classification number: H10K85/633 ,  C07C211/54 ,  C07C211/58 ,  H10K85/626 ,  H10K85/631 ,  C07C2601/16 ,  C07C2602/10 ,  H10K50/11 ,  H10K50/156 ,  H10K50/16 ,  H10K59/12 ,  H10K59/17 ,  H10K71/00 ,  H10K71/13 ,  H10K2101/10 ,  H10K2101/30 ,  H10K2102/311

Abstract: An object of one embodiment of the present invention is to provide a novel organic compound. The organic compound is a triarylamine derivative. The triarylamine derivative has an aryl group including a skeleton in which a naphthyl group is bonded to a naphthylene group. The other two aryl groups are each independently a phenyl group, a biphenyl group, or a terphenyl group. These groups may each have a substituent. As the substituent, an alkyl group having 1 to 6 carbon atoms or a cycloalkyl group having 3 to 6 carbon atoms can be selected.

公开(公告)号：US20240155863A1

公开(公告)日：2024-05-09

申请号：US18276750

申请日：2022-02-02

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Yui Yoshiyasu ,  Naoaki Hashimoto ,  Tatsuyoshi TAKAHASHI ,  Sachiko KAWAKAMI ,  Satoshi SEO

IPC: H10K50/16 ,  C09K11/06 ,  H10K50/13

CPC classification number: H10K50/166 ,  C09K11/06 ,  H10K50/13 ,  H10K85/633

Abstract: A light-emitting device having high heat resistance in a manufacturing process is provided. Provided is a light-emitting device which includes a second electrode over a first electrode with a first EL layer therebetween and in which the first EL layer includes at least a first light-emitting layer; a second EL layer is over the first EL layer; the second EL layer includes at least a second light-emitting layer, a first electron-transport layer, a second electron-transport layer, and an electron-injection layer; the first electron-transport layer is over the second light-emitting layer; the second electron-transport layer is over the first electron-transport layer; an insulating layer is in contact with the side surface of the first light-emitting layer, the side surface of the second light-emitting layer, the side surface of the first electron-transport layer, and the side surface of the second electron-transport layer; the electron-injection layer is over the second electron-transport layer; the insulating layer is positioned between the electron-injection layer and the side surface of the first light-emitting layer, the side surface of the second light-emitting layer, the side surface of the first electron-transport layer, and the side surface of the second electron-transport layer; and the second electron-transport layer includes a heteroaromatic compound including at least one heteroaromatic ring and an organic compound different from the heteroaromatic compound.

公开(公告)号：US11974447B2

公开(公告)日：2024-04-30

申请号：US17974143

申请日：2022-10-26

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi Seo ,  Hiromi Seo ,  Kunihiko Suzuki ,  Kanta Abe ,  Yuji Iwaki ,  Naoaki Hashimoto ,  Tsunenori Suzuki

IPC: H01L51/50 ,  H01L27/32 ,  H01L51/00 ,  H01L51/52 ,  H05B33/20 ,  H10K50/11 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17 ,  H10K50/81 ,  H10K50/82 ,  H10K59/00 ,  H10K59/12 ,  H10K85/30 ,  H10K101/40

CPC classification number: H10K50/16 ,  H10K50/11 ,  H10K50/15 ,  H10K50/171 ,  H10K50/81 ,  H10K50/82 ,  H10K59/00 ,  H10K85/321 ,  H10K2101/40

Abstract: A novel light-emitting device is provided. A light-emitting device with high emission efficiency is provided. A light-emitting device with a long lifetime is provided. A light-emitting device with low driving voltage is provided. The light-emitting device includes an anode, a cathode, and an EL layer between the anode and the cathode. The EL layer includes a hole-injection layer, a light-emitting layer, and an electron-transport layer. The hole-injection layer is positioned between the anode and the light-emitting layer. The electron-transport layer is positioned between the light-emitting layer and the cathode. The hole-injection layer contains a first substance and a second substance. The first substance is an organic compound which has a hole-transport property and a HOMO level higher than or equal to −5.7 eV and lower than or equal to −5.4 eV. The second substance exhibits an electron-accepting property with respect to the first substance. The electron-transport layer contains a material whose resistance decreases with current flowing therethrough.

公开(公告)号：US11963430B2

公开(公告)日：2024-04-16

申请号：US18134638

申请日：2023-04-14

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Taisuke Kamada ,  Ryo Hatsumi ,  Daisuke Kubota ,  Naoaki Hashimoto ,  Tsunenori Suzuki ,  Harue Osaka ,  Satoshi Seo

IPC: H10K65/00 ,  H10K39/32 ,  H10K50/16 ,  H10K50/17 ,  H10K50/86 ,  H10K59/12 ,  H10K59/40 ,  H10K101/30

CPC classification number: H10K65/00 ,  H10K39/32 ,  H10K50/16 ,  H10K50/17 ,  H10K50/865 ,  H10K59/12 ,  H10K59/40 ,  H10K2101/30

Abstract: An object is to provide a highly reliable display unit having a function of sensing light. The display unit includes a light-receiving device and a light-emitting device. The light-receiving device includes an active layer between a pair of electrodes. The light-emitting device includes a hole-injection layer, a light-emitting layer, and an electron-transport layer between a pair of electrodes. The light-receiving device and the light-emitting device share one of the electrodes, and may further share another common layer between the pair of electrodes. The hole-injection layer is in contact with an anode and contains a first compound and a second compound. The electron-transport property of the electron-transport layer is low; hence, the light-emitting layer is less likely to have excess electrons. Here, the first compound is the material having a property of accepting electrons from the second compound.

公开(公告)号：US11930703B2

公开(公告)日：2024-03-12

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: H10K85/60 ,  C07D493/04 ,  C09K11/06 ,  H10K50/11 ,  H10K101/10

CPC classification number: H10K85/636 ,  C07D493/04 ,  C09K11/06 ,  H10K85/615 ,  H10K85/626 ,  H10K85/633 ,  H10K85/6574 ,  C09K2211/1018 ,  H10K50/11 ,  H10K2101/10

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：US20240067664A1

公开(公告)日：2024-02-29

申请号：US18228150

申请日：2023-07-31

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kyoko Takeda ,  Harue Osaka ,  Naoaki Hashimoto ,  Tsunenori Suzuki

IPC: C07F5/02 ,  H10K50/30 ,  H10K85/60

CPC classification number: C07F5/02 ,  H10K50/30 ,  H10K85/658

Abstract: A novel organic compound that is highly convenient, useful, or reliable is to be provided. The organic compound is represented by General Formula (G0).




In General Formula (G0), X and Y each independently represent an oxygen atom or a sulfur atom. Ar1 to Ar4 each independently represent an aromatic ring or a nitrogen-containing heteroaromatic ring, the aromatic ring contains 6 to 10 carbon atoms, and the nitrogen-containing heteroaromatic ring is composed only of one or more six-membered rings and contains 4 to 9 carbon atoms. R, R11, R21, R21, R22, R31, R32, R41, and R42 each independently represent hydrogen, a straight-chain alkyl group having 1 to 6 carbon atoms, a branched alkyl group having 3 to 7 carbon atoms, a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, substituted or unsubstituted diarylamine having 6 to 13 carbon atoms, or substituted or unsubstituted heteroarylamine having 3 to 18 carbon atoms.

公开(公告)号：US20230103249A1

公开(公告)日：2023-03-30

申请号：US17866013

申请日：2022-07-15

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Sachiko Kawakami ,  Yui Yoshiyasu ,  Nobuharu Ohsawa ,  Tsunenori Suzuki ,  Toshiki Sasaki ,  Naoaki Hashimoto ,  Tomohiro Kubota ,  Satoshi Seo

IPC: H01L51/00

Abstract: A light-emitting device with high resistance to heat in a fabrication process is provided. The light-emitting device includes an EL layer between an anode and a cathode, and the EL layer includes at least a light-emitting layer. The light-emitting device includes, between the light-emitting layer and the cathode, a first layer in contact with the light-emitting layer. The light-emitting layer includes a light-emitting substance, a first organic compound, and a second organic compound. The first layer includes a third organic compound different from the first organic compound and the second organic compound. The light-emitting substance emits green to yellow light. The third organic compound includes a bicarbazole skeleton and a heteroaromatic ring skeleton including one selected from a pyridine ring, a diazine ring, and a triazine ring.