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公开(公告)号：US20240360358A1
公开(公告)日：2024-10-31
申请号：US18681888
申请日：2022-09-20
Applicant: HODOGAYA CHEMICAL CO., LTD.
Inventor： Kouki KASE , Eriko CHIBA , Byung-Sun YANG , Moon-Chan HWANG , Yuta HIRAYAMA , Shuichi HAYASHI
CPC classification number: C09K11/06 , H10K50/11 , H10K85/6572 , C09K2211/1029
Abstract: It is an object of the present invention to provide a compound that has a high refractive index and a low extinction coefficient in a wavelength range of 450 to 750 nm, which is favorably used as a material for a capping layer of an organic EL element. Also, it is another object of the present invention to provide an organic EL element whose light extraction efficiency has been improved by using the compound. The present invention is directed to a compound represented by a general formula (1) or (2) below:
where A represents a substituted or unsubstituted aromatic hydrocarbon group or the like, B and C are optionally the same or different, and represent an unsubstituted naphthyl group, an unsubstituted quinolyl group, or the like, and each L is optionally the same or different, and represents a single bond, a substituted or unsubstituted divalent aromatic hydrocarbon group, or the like.-
公开(公告)号：US12037332B2
公开(公告)日：2024-07-16
申请号：US16981302
申请日：2019-03-20
Applicant: HODOGAYA CHEMICAL CO., LTD.
Inventor： Kouki Kase , Su-Jin Lee , Si-In Kim , Kazuyuki Suruga , Yuta Hirayama
IPC: H01L51/50 , C07D471/04 , H10K85/60 , H10K50/16 , H10K50/17
CPC classification number: C07D471/04 , H10K85/6572 , H10K50/16 , H10K50/171
Abstract: A compound including a benzimidazole ring structure, represented by general formula (1).
(In formula (1), X1 and X2 may be the same or different and each represent a specific carbon atom or a nitrogen atom, Ar represents a specific group, R1 and R2 may be the same or different and each represent a specific group, and m is an integer of 0-4.)-
公开(公告)号：US11999818B2
公开(公告)日：2024-06-04
申请号：US16972672
申请日：2019-07-01
Applicant: HODOGAYA CHEMICAL CO., LTD.
Inventor： Kazunori Togashi , Hideyoshi Kitahara , Junichi Izumida , Hiroki Hirai , Mika Shinoda
Abstract: It is an object of the present invention to provide a high molecular weight compound that has excellent hole injection and transport performance, is capable of blocking electrons, and is highly stable as a thin film. It is another object of the present invention to provide an organic EL element that includes an organic layer (thin film) made of the above-described high molecular weight compound, wherein the organic EL element has high light emission efficiency and a long lifespan. The high molecular weight compound according to the present invention includes a repeating unit represented by a general formula (3), that is constituted by a specific triarylamine structural unit and a specific bonding structural unit, and has a weight average molecular weight of 10,000 or more and less than 1,000,000 on a polystyrene basis.
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公开(公告)号：US20240116914A1
公开(公告)日：2024-04-11
申请号：US18273421
申请日：2022-02-10
Applicant: HODOGAYA CHEMICAL CO., LTD.
Inventor： Eriko CHIBA , Takeshi YAMAMOTO , Kouki KASE , Yuta HIRAYAMA , Shuichi HAYASHI
IPC: C07D413/14 , C07C15/24 , C07D209/90 , C07D239/26 , C07D307/91 , C07D401/10 , C07D401/14 , C07D417/14 , H10K85/20 , H10K85/60
CPC classification number: C07D413/14 , C07C15/24 , C07D209/90 , C07D239/26 , C07D307/91 , C07D401/10 , C07D401/14 , C07D417/14 , H10K85/20 , H10K85/615 , H10K85/654 , H10K85/6572 , H10K85/6574 , H10K85/6576
Abstract: It is an object of the present invention to provide a compound for a capping layer that has a high refractive index and a low extinction coefficient in a range of 450 nm to 750 nm to improve the light extraction efficiency of an organic EL element. The present invention has focused on the fact that compounds having a benzene skeleton at the center thereof are excellent in stability and also durability in the form of a thin film, and that the refractive index thereof can be improved by modifying the molecular structure, and thus, molecules have been designed. Provided is a compound represented by a general formula (1), and an organic EL element with excellent luminance efficiency is obtained by using that compound as a constituent material of a capping layer.
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公开(公告)号：US11944004B2
公开(公告)日：2024-03-26
申请号：US16076586
申请日：2017-02-08
Applicant: HODOGAYA CHEMICAL CO., LTD.
Inventor： Norimasa Yokoyama , Shuichi Hayashi , Naoaki Kabasawa , Takeshi Yamamoto
IPC: H01L51/00 , H01L51/50 , H10K50/11 , H10K50/15 , H10K50/16 , H10K50/17 , H10K50/18 , H10K85/60 , H10K50/125 , H10K50/81 , H10K50/82 , H10K101/10
CPC classification number: H10K85/654 , H10K50/11 , H10K50/15 , H10K50/16 , H10K50/171 , H10K50/18 , H10K85/615 , H10K85/631 , H10K85/633 , H10K85/636 , H10K85/6572 , H10K50/125 , H10K50/17 , H10K50/81 , H10K50/82 , H10K85/626 , H10K2101/10
Abstract: According to the present invention, there is provided an organic electroluminescence element including at least an anode, a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, and a cathode in the stated order, the organic electroluminescence element being characterized in that: the hole injection layer contains an arylamine compound represented by the following general formula (1) and an electron acceptor. The organic EL element of the present invention has a high light emission efficiency and an excellent durability, as compared with the related art, while maintaining the existing low drive voltage.
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Patent Agency Ranking
6.发明公开公开(公告)号：US20240099128A1
公开(公告)日：2024-03-21
申请号：US18269881
申请日：2022-01-11
Applicant: HODOGAYA CHEMICAL CO., LTD.
Inventor： Yuya OHKURA , Hideaki TAKAHASHI , Hiroshi SATO
IPC: H10K85/60 , C07C225/22 , C07C229/44 , C07C255/42 , C07D209/86 , C07D239/66 , C07D265/38 , C07D279/28 , C07D333/22 , C07D409/14
CPC classification number: H10K85/633 , C07C225/22 , C07C229/44 , C07C255/42 , C07D209/86 , C07D239/66 , C07D265/38 , C07D279/28 , C07D333/22 , C07D409/14 , H10K85/636 , H10K30/86
Abstract: An object of the present invention is to provide a compound that is useful as a hole transport material for providing a device for converting light into electricity that is capable of extracting current with high efficiency, and a device for converting light into electricity and a solar cell that include the compound in a hole transport layer and have favorable light/electricity conversion characteristics. The present invention provides a compound represented by the general formula (1) below. In the formula, R1 to R20 each represent a hydrogen atom, an alkoxy group having 1 to 20 carbon atoms, or the like, and Y represents an oxygen atom or CR21R22, where R21 and R22 each represent a nitrile group, an acyl group having 1 to 10 carbon atoms, or the like.
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公开(公告)号：US11925114B2
公开(公告)日：2024-03-05
申请号：US16342410
申请日：2017-10-18
Applicant: HODOGAYA CHEMICAL CO., LTD.
Inventor： Takehiro Takahashi , Hideyoshi Kitahara , Junichi Izumida
IPC: H10K85/60 , C07D209/94 , C07D405/14 , C09K11/06 , H10K50/11 , H10K50/15 , H10K50/17 , H10K50/18 , H10K101/10
CPC classification number: H10K85/6572 , C07D209/94 , C07D405/14 , C09K11/06 , H10K85/6574 , C09K2211/1025 , H10K50/11 , H10K50/15 , H10K50/17 , H10K50/18 , H10K2101/10
Abstract: The present invention provides an indenocarbazole compound characterized by having hole transporting properties, being used as a constituent material of an organic electroluminescence device, and being represented by the following general formula (1), and an organic electroluminescence device having a pair of electrodes and at least one organic layer sandwiched therebetween is characterized in that the indenocarbazole compound is used as a constituent material of at least one organic layer. The indenocarbazole compound according to the present invention has (1) excellent hole transporting properties, (2) excellent electron blocking properties, (3) a stable thin film state, and excellent heat resistance. The organic electroluminescence device according to the present invention has a high light-emitting efficiency and high brightness.
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8.发明公开公开(公告)号：US20230329080A1
公开(公告)日：2023-10-12
申请号：US18022101
申请日：2021-09-17
Applicant: HODOGAYA CHEMICAL CO., LTD.
Inventor： Yuta SAEGUSA , Mika SHINODA , Kazunori TOGASHI , Hiroki HIRAI
CPC classification number: H10K85/111 , C09K11/06 , H10K85/631 , H10K85/615 , H10K85/40 , H10K50/15 , H10K50/181 , C09K2211/1022 , C09K2211/1416 , C09K2211/1433
Abstract: It is an object of the present invention to provide a composition for light emitting diodes with which it is possible to obtain an organic EL element that includes an organic layer formed using a high molecular weight material and whose service life can be extended as compared with that of conventional organic EL elements. The present invention provides a composition for light emitting diodes containing a high molecular weight compound and a thermally crosslinkable low molecular weight compound, wherein the thermally crosslinkable low molecular weight compound includes a compound that has two or more thermally crosslinkable structures in a molecule. The thermally crosslinkable low molecular weight compound preferably includes a compound that contains two or more thermally crosslinkable structures selected from the group consisting of an acrylate structure, a methacrylate structure, and a maleimide structure in a molecule.
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公开(公告)号：US11672169B2
公开(公告)日：2023-06-06
申请号：US16480913
申请日：2018-03-09
Applicant: HODOGAYA CHEMICAL CO., LTD.
Inventor： Shunji Mochizuki , Takeshi Yamamoto , Naoaki Kabasawa
CPC classification number: H01L51/0059 , C09K11/06 , H01L51/0067 , H01L51/0072 , H01L51/0073 , H01L51/0074 , H01L51/0052 , H01L51/5064 , H01L51/5072
Abstract: An object of the present invention is to provide an organic EL element that has (1) high light emission efficiency and high power efficiency, (2) a low light-emission start voltage, (3) a low actual driving voltage, and (4) an especially long lifespan. According to the present invention, provided is an organic electroluminescent element, or organic EL element, having at least an anode, a hole injection layer, a first hole transport layer, a second hole transport layer, a light emitting layer, an electron transport layer, and a cathode, in this order, wherein the second hole transport layer contains an arylamine compound represented by the general formula (1) below, and the electron transport layer contains a pyrimidine derivative represented by the general formula (2) below. Note that A in the general formula (2) represents a monovalent group represented by the structural formula (3) below.
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公开(公告)号：US20230099897A1
公开(公告)日：2023-03-30
申请号：US17798144
申请日：2021-02-25
Applicant: HODOGAYA CHEMICAL CO., LTD.
Inventor： Kouki KASE , Sang-Won KO , Jung-Ho RYU , Bong-Hyang LEE , Junichi IZUMIDA
IPC: H01L51/00 , C07D307/93
Abstract: An object of the present invention is to provide a material for a highly efficient and highly durable organic EL device, and specifically, an organic compound with excellent properties including excellent hole-injecting/transporting performance, electron-blocking capability, and high stability in the form of a thin film. Another object of the present invention is to provide a highly efficient and highly durable organic EL device by using this compound. The present invention is directed to an arylamine compound having a fluorenyl skeleton-containing heterocycle structure, with excellent heat resistance and good hole-transporting capability. An organic EL device including this compound in its hole-transporting layer, electron-blocking layer, light-emitting layer, or hole-injecting layer exhibited good device characteristics.
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