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公开(公告)号：US20230180598A1
公开(公告)日：2023-06-08
申请号：US17925619
申请日：2021-06-16
发明人： Yuta HIRAYAMA , Takeshi YAMAMOTO , Kouki KASE , Kazuyuki SURUGA , Shuichi HAYASHI , Soon-Wook CHA , Sung-Hoon JOO , Byung-Sun YANG , Ji-Hwan KIM
CPC分类号： H10K85/633 , H10K85/658 , C09K11/06 , H10K50/156
摘要： An objective of the present invention is to provide a material for organic EL devices offering excellent hole injectability and transportability, electron blockability, stability in a thin-film state, and durability, and also to provide an organic EL device having high efficiency, low driving voltage and long lifetime by employing, in combination, the aforementioned material and various materials for organic EL devices offering excellent hole/electron injectability and transportability, electron blockability, stability in a thin-film state, and durability, in a manner that the properties of each of the materials can be brought out effectively. The present invention relates to an organic EL device containing a specific arylamine compound as a material constituting a second hole transport layer, wherein the difference between the HOMO level of the second hole transport layer and the HOMO level of a first hole transport layer is 0.15 eV or less.
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公开(公告)号：US20220102635A1
公开(公告)日：2022-03-31
申请号：US17296347
申请日：2019-11-28
发明人： Sung-hoon JOO , Byung-sun YANG , Su-jin KIM , Ji-hwan KIM , Hyeon-jun JO , Sung-eun CHOI , Bong-ki SHIN , Young-hwan PARK , Shuichi HAYASHI , Takeshi YAMAMOTO , Shunji MOCHIZUKI , Yuta HIRAYAMA
摘要： An organic light-emitting element according to the present invention employs a polycyclic aromatic derivative compound in a light-emitting layer inside the element, and further comprises a capping layer. Thus, the organic light-emitting element can be made highly efficient and can be useful for a device selected from among a flat panel display device, a flexible display device, a monochrome or white flat panel lighting device, and a monochrome or white flexible lighting device.
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公开(公告)号：US20200287141A1
公开(公告)日：2020-09-10
申请号：US16650717
申请日：2018-09-21
发明人： Yuta HIRAYAMA , Takeshi YAMAMOTO , Kazuyuki SURUGA , Se-Jin LEE , Oun-Gyu LEE , Bong-Ki SHIN
摘要： [Object] It is an object of the present invention to provide an organic EL device in which various materials for an organic EL device, which is excellent in hole/electron injection/transport performance, electron blocking performance, stability in a thin film state, and durability, are combined as materials for an organic EL device that has high light emission efficiency and high durability so that properties of each of the materials can be effectively expressed, thereby achieving (1) high light emission efficiency and power efficiency, (2) a low light emission start voltage, (3) a low practical driving voltage, and particularly (4) a long lifetime.[Solving Means] There is provided an organic electroluminescence device, including at least an anode, a hole transport layer, a light-emitting layer, an electron transport layer, and a cathode in the stated order, the organic electroluminescence device being characterized in that the hole transport layer contains an arylamine compound represented by the following general formula (1), and the light-emitting layer contains a heterocyclic compound having a fused ring structure represented by the following general formula (2) or a heterocyclic compound having a fused ring structure represented by the following general formula (3).
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公开(公告)号：US20240032321A1
公开(公告)日：2024-01-25
申请号：US18034552
申请日：2021-10-29
发明人： Kazuyuki SURUGA , Sang-Won KO , Bong-Hyang LEE , Jung-Ho RYU , Takeshi YAMAMOTO , Junichi IZUMIDA , Soon-Wook CHA , Sung-Hoon JOO , Byung-Sun YANG , Ji-Hwan KIM , Bong-Ki SHIN
摘要： The present invention relates to an organic electroluminescent element (organic EL element) including at least an anode, a first hole transport layer, a second hole transport layer, a blue light-emitting layer, an electron transport layer, and a cathode in this order, in which the second hole transport layer contains an arylamine compound represented by the following general formula (1).
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公开(公告)号：US20230247850A1
公开(公告)日：2023-08-03
申请号：US18015893
申请日：2021-08-02
发明人： Yuta HIRAYAMA , Takeshi YAMAMOTO , Kouki KASE , Shuichi HAYASHI , Soon-Wook CHA , Sung-Hoon JOO , Byung-Sun YANG , Ji-Hwan KIM
CPC分类号： H10K50/15 , H10K85/631 , H10K85/6574 , H10K85/636 , H10K85/615 , H10K85/626 , H10K85/633 , H10K85/654 , H10K85/655 , H10K85/657 , H10K85/622
摘要： An objective of the present invention is to provide an organic EL device having high efficiency, low driving voltage and long lifetime by using a material for organic EL devices offering excellent hole injectability and transportability, electron blockability, stability in a thin-film state, and durability, and also by employing, in combination, the aforementioned material and various other materials for organic EL devices offering excellent hole/electron injectability and transportability, electron blockability, stability in a thin-film state, and durability, in a manner that the properties of each material can be brought out effectively. The present invention relates to an organic electroluminescence device having, between an anode and a cathode, at least a hole transport layer, a light-emitting layer, and an electron transport layer in this order from the anode side, wherein the hole transport layer contains a triarylamine compound having a specific structure.
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6.发明申请公开(公告)号：US20220119360A1
公开(公告)日：2022-04-21
申请号：US17427772
申请日：2020-02-21
发明人： Shunji MOCHIZUKI , Takuya UEHARA , Kouki KASE , Yuta HIRAYAMA , Takeshi YAMAMOTO , Shuichi HAYASHI , Young-Tae CHOI , Se-Jin LEE , Seok-Bae PARK , Tae-Jung YU , Byung-Sun YANG
IPC分类号： C07D263/62 , H01L51/00 , C07D277/66 , C09K11/06 , H01L51/52
摘要： An objective of the invention is to provide an organic EL device that combines various materials of the device and a capping layer composed from a material that absorbs sunlight within the wavelength range of 400 nm to 410 nm to prevent impact on materials inside the organic EL device, has a high light absorption coefficient and a high refractive index to significantly improve light extraction efficiency, has excellent stability, durability and light resistance in a thin film, and has no absorption within the wavelength ranges of blue, green and red, to thereby effectively achieve the characteristics of the various materials of the device. The invention is an arylamine compound having a benzazole structure, and is also an organic EL device including a capping layer containing the arylamine compound and a light-emitting layer containing a host and a phosphorescent dopant.
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公开(公告)号：US20220077403A1
公开(公告)日：2022-03-10
申请号：US17417267
申请日：2019-12-18
发明人： Yuta HIRAYAMA , Takeshi YAMAMOTO , Shunji MOCHIZUKI , Shuichi HAYASHI , Se-Jin LEE , Oun-Gyu LEE , Bong-Ki SHIN
IPC分类号： H01L51/00
摘要： The present invention provides various organic electroluminescent elements using a material for a capping layer and a material for a luminous layer, in which the material for a capping layer uses an arylamine material that exhibit excellent stability and durability in the form of a thin film, especially a specific amine compound having a high refractive index and having a high absorbance within a wavelength range from 400 nm to 410 nm in the absorption spectrum at a concentration of 10−5 mol/L; and in which the material for a luminous layer uses a compound containing a heterocyclic compound that has a specific fused ring structure.
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公开(公告)号：US20230345817A1
公开(公告)日：2023-10-26
申请号：US18021251
申请日：2021-08-13
发明人： Junichi IZUMIDA , Sang-Won KO , Bong-Hyang LEE , Jung-Ho RYU , Takeshi YAMAMOTO , Kazuyuki SURUGA , Soon-Wook CHA , Sung-Hoon JOO , Byung-Sun YANG , Ji-Hwan KIM
CPC分类号： H10K85/633 , C07C211/54 , C09K11/06 , C07F7/081 , H10K85/40 , C07F5/027 , H10K85/658 , H10K50/156
摘要： An object is to provide a material for an organic EL device having excellent hole injection and transport performance, electron blocking ability, stability in a thin film state, and durability, and further to provide an organic EL device having high efficiency, a low driving voltage, and a long lifetime by combining the material with various materials for an organic EL device having excellent hole and electron injection and transport performance, electron blocking ability, stability in a thin film state, and durability in such a manner that the characteristics of each of the materials can be effectively exhibited. An organic EL device was fabricated by focusing on the fact that a triarylamine compound having a specific structure has excellent hole injection and transport ability, thin film stability, and durability, and selecting a specific arylamine compound as a material for forming a second hole transport layer, and the invention was completed.
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公开(公告)号：US20230101400A1
公开(公告)日：2023-03-30
申请号：US17792001
申请日：2021-01-21
发明人： Junichi IZUMIDA , Takeshi YAMAMOTO , Kouki KASE , Kazuyuki SURUGA , Shuichi HAYASHI , Soon-Wook CHA , Sung-Hoon JOO , Byung-Sun YANG , Ji-Hwan KIM
摘要： An organic electroluminescent element including an anode and a cathode and including, between the anode and the cathode, at least a first hole transport layer, a second hole transport layer, a blue-light-emitting layer, and an electron transport layer disposed in this order from the anode side, in which at least one of the layers disposed between the first hole transport layer and the electron transport layer includes an arylamine compound represented by general formula (1).
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公开(公告)号：US20220149291A1
公开(公告)日：2022-05-12
申请号：US17431195
申请日：2020-02-28
摘要： It is an object of the present invention to provide an organic EL element including a capping layer constituted by two layers consisting of a first capping layer and a second capping layer that has a refractive index that is higher than that of the first capping layer, in order to improve the light extraction efficiency compared with an organic EL element including a capping layer constituted by a single layer. The present invention provides an organic electroluminescent element at least including an anode, a hole transport layer, a light emitting layer, an electron transport layer, a cathode, and a capping layer arranged in this order, wherein the capping layer has a structure constituted by two layers consisting of a first capping layer and a second capping layer, a refractive index of the second capping layer is higher than a refractive index of the first capping layer throughout a wavelength range from 450 to 650 nm, and the second capping layer contains an arylamine compound having a specific structure.
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