公开(公告)号：US12219862B2

公开(公告)日：2025-02-04

申请号：US18592944

申请日：2024-03-01

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

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：US12127471B2

公开(公告)日：2024-10-22

申请号：US18216285

申请日：2023-06-29

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Tsunenori Suzuki ,  Naoaki Hashimoto ,  Eriko Saijo ,  Satoshi Seo

IPC: H01L51/00 ,  H01L51/50 ,  H10K50/11 ,  H10K50/13 ,  H10K50/16 ,  H10K85/30 ,  H10K85/60 ,  H10K101/00 ,  H10K101/10 ,  H10K101/30

CPC classification number: H10K85/342 ,  H10K50/11 ,  H10K50/13 ,  H10K50/16 ,  H10K85/622 ,  H10K85/631 ,  H10K85/633 ,  H10K85/6572 ,  H10K85/6576 ,  H10K2101/10 ,  H10K2101/27 ,  H10K2101/30 ,  H10K2101/90

Abstract: A light-emitting element which includes a plurality of light-emitting layers between a pair of electrodes and has low driving voltage and high emission efficiency is provided. A light-emitting element including first to third light-emitting layers between a cathode and an anode is provided. The first light-emitting layer includes a first phosphorescent material and a first electron-transport material; the second light-emitting layer includes a second phosphorescent material and a second electron-transport material; the third light-emitting layer includes a fluorescent material and a third electron-transport material; the first to third light-emitting elements are provided in contact with an electron-transport layer positioned on a cathode side; and a triplet excitation energy level of a material included in the electron-transport layer is lower than triplet excitation energy levels of the first electron-transport material and the second electron-transport material.

公开(公告)号：US12043618B2

公开(公告)日：2024-07-23

申请号：US18096204

申请日：2023-01-12

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takuya Haruyama ,  Sachiko Kawakami ,  Naoaki Hashimoto ,  Yusuke Takita ,  Tsunenori Suzuki ,  Satoshi Seo

IPC: C07D407/12 ,  H10K50/11 ,  H10K50/84 ,  H10K77/10 ,  H10K85/60 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17 ,  H10K101/10

CPC classification number: C07D407/12 ,  H10K50/11 ,  H10K50/84 ,  H10K77/10 ,  H10K85/633 ,  H10K85/6574 ,  H10K50/15 ,  H10K50/16 ,  H10K50/171 ,  H10K2101/10

Abstract: An organic compound has a benzonaphthofuran skeleton and is represented by General Formula (G1). In General Formula (G1), A represents a pyrene skeleton. In the case where the pyrene skeleton has a substituent, the substituent is a diarylamino group including two substituted or unsubstituted aryl groups each having 6 to 13 carbon atoms, a substituted or unsubstituted aryl group having 6 to 13 carbon atoms, an alkyl group having 1 to 7 carbon atoms, a substituted or unsubstituted monocyclic saturated hydrocarbon group having 3 to 20 carbon atoms, or a substituted or unsubstituted polycyclic saturated hydrocarbon group having 7 to 10 carbon atoms. The two aryl groups of the diarylamino group may be the same or different. In X1 represented by General Formula (G1-1), one of R6 and R7 is bonded to N in General Formula (G1), and the other of R6 and R7 represents an alkyl group having 1 to 7 carbon atoms, a substituted or unsubstituted monocyclic saturated hydrocarbon group having 3 to 20 carbon atoms, or a substituted or unsubstituted polycyclic saturated hydrocarbon group having 7 to 10 carbon atoms.

公开(公告)号：US11937498B2

公开(公告)日：2024-03-19

申请号：US17057830

申请日：2019-05-22

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Hiroshi Kadoma ,  Satoshi Seo ,  Hiroki Suzuki ,  Naoaki Hashimoto ,  Tsunenori Suzuki

IPC: H01L51/50 ,  C07C15/38 ,  H10K85/60 ,  H10K50/11 ,  H10K59/12 ,  H10K59/38 ,  H10K59/40 ,  H10K101/10

CPC classification number: H10K85/626 ,  C07C15/38 ,  H10K50/11 ,  H10K59/12 ,  H10K59/38 ,  H10K59/40 ,  H10K2101/10

Abstract: A novel compound is provided. Alight-emitting device having high emission efficiency and a long lifetime is also provided. An organic compound is represented by General Formula (G2), in which a benzo[a]anthracene skeleton is bonded to the 2-position of an anthracene skeleton. In General Formula (G2), R1 to R3, R5 to R12, and R21 to R29 each independently represent any one 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 in a ring. Another embodiment of the present invention is a light-emitting device including the compound.

公开(公告)号：US11489133B2

公开(公告)日：2022-11-01

申请号：US16897709

申请日：2020-06-10

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

IPC: H01L51/50 ,  H01L51/00 ,  H01L51/52 ,  H01L27/32

Abstract: A novel light-emitting device is provided. A light-emitting device with high emission efficiency is provided. A light-emitting device with along 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：US10096783B2

公开(公告)日：2018-10-09

申请号：US15652799

申请日：2017-07-18

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kyoko Takeda ,  Harue Osaka ,  Yusuke Takita ,  Naoaki Hashimoto ,  Tsunenori Suzuki ,  Kunihiko Suzuki ,  Satoshi Seo

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

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：US09899603B2

公开(公告)日：2018-02-20

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 ,  C07D307/77 ,  C09K11/06 ,  H01L51/50

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：US12101997B2

公开(公告)日：2024-09-24

申请号：US17416754

申请日：2019-12-17

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Naoaki Hashimoto ,  Satoshi Seo ,  Tsunenori Suzuki ,  Yusuke Takita ,  Takumu Okuyama ,  Nobuharu Ohsawa ,  Shunpei Yamazaki ,  Toshiki Sasaki

IPC: H10K50/16 ,  H10K50/11 ,  H10K85/30 ,  H10K85/60 ,  H10K101/30

CPC classification number: H10K85/636 ,  H10K85/342 ,  H10K85/622 ,  H10K85/626 ,  H10K85/657 ,  H10K85/6572 ,  H10K85/6576 ,  H10K50/16 ,  H10K85/6574 ,  H10K2101/30

Abstract: A novel light-emitting device, a light-emitting device with high emission efficiency, a light-emitting device with a long lifetime, or a light-emitting device with low driving voltage is provided. An EL layer includes a first layer, a second layer, a third layer, a light-emitting layer, and a fourth layer in this order from the anode side. The first layer contains a first organic compound and a second organic compound. The fourth layer contains a seventh organic compound. The first organic compound exhibits an electron-accepting property with respect to the second organic compound. A HOMO level of the second organic compound is higher than or equal to −5.7 eV and lower than or equal to −5.4 eV. The fourth layer includes a region where the amount of seventh organic compound is large and a region where the amount of seventh organic compound is small in the thickness direction.

公开(公告)号：US11943944B2

公开(公告)日：2024-03-26

申请号：US17423665

申请日：2020-01-16

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 includes 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：US11917908B2

公开(公告)日：2024-02-27

申请号：US17116222

申请日：2020-12-09

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kyoko Takeda ,  Harue Osaka ,  Hiroshi Kadoma ,  Satoshi Seo ,  Tsunenori Suzuki ,  Naoaki Hashimoto

IPC: H01L51/00 ,  C07D493/04 ,  C09K11/06 ,  C07D209/88 ,  C07D405/12 ,  H10K85/60 ,  H10K50/11

CPC classification number: H10K85/636 ,  C07D209/88 ,  C07D405/12 ,  C07D493/04 ,  C09K11/06 ,  H10K85/633 ,  C09K2211/1022 ,  H10K50/11 ,  H10K85/615 ,  H10K85/622 ,  H10K85/6572 ,  H10K85/6574

Abstract: A novel organic compound represented by General Formula (G1) is provided. In General Formula (G1), X1 and X2 each independently represent a secondary or tertiary alkyl group having 3 to 6 carbon atoms and having a branched carbon atom which is bonded to a phenyl group. In addition, Ar1 represents a substituted or unsubstituted condensed aromatic ring skeleton having 10 to 60 carbon atoms and composed of two or more rings or a substituted or unsubstituted condensed heteroaromatic ring skeleton having 8 to 60 carbon atoms and composed of two or more rings. Furthermore, Ar2 represents a substituted or unsubstituted aryl group having 6 to 25 carbon atoms. Moreover, n represents any of 1 to 3, and in the case where n is 2 or more, two or more groups bonded to Ar1 may be identical or different.