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公开(公告)号：US20200207748A1
公开(公告)日：2020-07-02
申请号：US16646980
申请日：2018-09-04
IPC分类号： C07D413/10 , C07D413/04 , C07D413/14 , C07D417/10 , C07D417/04 , C07D417/14 , C07C211/54 , C07C211/58 , C07D263/57 , C07D277/66 , C07D209/82 , C07D307/91 , C07D333/76 , H01L51/42 , H01L51/00
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 injection/transport performance, electron injection/transport performance, electron blocking performance, stability in a thin film state, and durability, are combined 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 EL 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 EL device being characterized in that the hole transport layer contains an arylamine compound represented by the following general formula (1), and the electron transport layer contains a compound having a benzoazole ring structure represented by the following general formula (2). (In the formula, Ar1 to Ar5 may be the same or different from each other, and represent a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted fused polycyclic aromatic group. Ar6 to Ar8 may be the same or different from each other, and represent a hydrogen atom, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted fused polycyclic aromatic group. n1 represents 0, 1, or 2. Ar3 and Ar4 may form a ring with a single bond or may be bonded to each other via a substituted or unsubstituted methylene group, an oxygen atom, or a sulfur atom to form a ring. Ar3 or Ar4 may form a ring with a benzene ring to which Ar3Ar4—N group is bonded, with a single bond or may be bonded to each other via a substituted or unsubstituted methylene group, an oxygen atom, or a sulfur atom to form a ring.) (In the formula, Ar9 and Ar10 may be the same or different from each other, and represent a hydrogen atom, a deuterium atom, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, a substituted or unsubstituted fused polycyclic aromatic group, or a substituted or unsubstituted alkyl group. Y1 represents a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, a substituted or unsubstituted fused polycyclic aromatic group, or a substituted or unsubstituted alkyl group. X represents an oxygen atom or a sulfur atom. Z1 and Z2 may be the same or different from each other, and represent a carbon atom or a nitrogen atom.)
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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：US20180362843A1
公开(公告)日：2018-12-20
申请号：US15781986
申请日：2016-12-07
IPC分类号： C09K11/06 , C07C211/54 , C07D495/04 , C07D403/04 , C07D403/10 , C07D491/048 , C07D495/14 , H01L51/00
摘要： The present invention provides an organic EL device having at least an anode, a hole transport layer, a luminous layer, an electron transport layer, and a cathode in this order, wherein the hole transport layer contains an arylamine compound represented by the following general formula (1), and the luminous layer contains a dihydroindenoindole derivative represented by the following general formula (2) or a carbazole derivative represented by the following general formula (3). The organic EL device of the present invention has a high efficiency, is driven at a low driving voltage, and has a particularly long lifetime.
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公开(公告)号：US20220255008A1
公开(公告)日：2022-08-11
申请号：US17616537
申请日：2020-05-29
发明人： Kazunori TOGASHI , Mika SHINODA , Hideyoshi KITAHARA , Shunji MOCHIZUKI , Hiroki HIRAI , Yuta SAEGUSA
摘要： [Object] To provide a polymer material having excellent hole injection/transport performance, electron blocking capability, high heat resistance, and high stability in a thin-film state for use in a polymer organic EL device, and provide an organic EL device having a low drive voltage, high light emission efficiency, and a long lifetime using this polymer material.
[Solving Means] A compound according to the present invention is a high-molecular-weight compound having at least one substituted triarylamine structural unit represented by the following general formula (1), further including a structural unit having at least one aromatic hydrocarbon ring or a structural unit having a triarylamine skeleton in addition to the at least one substituted triarylamine structural unit, and having a weight average molecular weight of 10,000 or more and 1,000,000 or less in terms of polystyrene and no a crosslinker, characterized in that the high-molecular-weight compound is used in an organic EL device as a constituent material of at least one organic layer.-
公开(公告)号：US20210226132A1
公开(公告)日：2021-07-22
申请号：US17259822
申请日：2019-07-17
发明人： Kouki KASE , Shunji MOCHIZUKI , Yuta HIRAYAMA
IPC分类号： H01L51/00 , C07D403/14 , C07D263/57 , C07D249/20 , C09K11/06 , H01L51/50
摘要： The present invention is an organic EL element in which a material used for a capping layer is a material having a high absorbance as measured at a wavelength of 400 to 410 nm in an absorption spectrum at a concentration of 10−5 mol/L, and the material is selected from an arylamine material which provides excellent stability and durability to a thin film, particularly selected from a diamine compound that has a particular benzazol ring structure having a high refractive index.
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6.发明申请公开(公告)号：US20200328355A1
公开(公告)日：2020-10-15
申请号：US16761615
申请日：2018-11-05
IPC分类号： H01L51/00
摘要： [Object] It is an object of the present invention to provide an organic compound having excellent properties such as excellent hole injection/transport performance, electron blocking performance, high stability in a thin-film state, and high light emission efficiency as a material for a highly efficient organic EL device having a high durability, and a highly efficient organic EL device having a high durability by using this compound.[Solving Means] An organic EL device, including, between an anode and a cathode, at least a first hole transport layer, a second hole transport layer, a green light-emitting layer, and an electron transport layer in the stated order from a side of the anode, the organic EL device being characterized in that the second hole transport layer, or at least one of stacked films disposed between the first hole transport layer and the electron transport layer contains a compound having an indenocarbazole ring structure, the compound being represented by the following general formula (1).
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公开(公告)号：US20240260457A1
公开(公告)日：2024-08-01
申请号：US18618748
申请日：2024-03-27
CPC分类号： H10K85/654 , H10K85/631 , H10K50/15 , H10K50/16 , H10K50/171
摘要： The present invention relates to an organic EL device having at least an anodic electrode, a hole transport layer, a light emitting layer, an electron transport layer, a cathodic electrode, and a capping layer in this order, in which the capping layer contains an amine compound having a benzazole ring structure represented by the following general formula (A-1).
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公开(公告)号：US20230100661A1
公开(公告)日：2023-03-30
申请号：US17796755
申请日：2021-02-17
发明人： Kazunori TOGASHI , Hideyoshi KITAHARA , Shunji MOCHIZUKI , Hiroki HIRAI , Mika SHINODA , Yuta SAEGUSA
摘要： It is an object of the present invention to provide a high molecular weight compound that has excellent hole-injecting/transporting performance, is capable of blocking electrons, and is highly stable in a thin film state. It is another object of the invention to provide a light emitting diode with high luminous efficacy and a long lifespan, containing an organic layer (thin film) made of the above-described high molecular weight compound. The high molecular weight compound according to the present invention includes a repeating unit constituted by a specific triarylamine structural unit and a specific bonding structural unit, and has a weight average molecular weight in terms of polystyrene of 10,000 or more and less than 1,000,000.
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9.发明申请公开(公告)号：US20220352469A1
公开(公告)日：2022-11-03
申请号：US17639792
申请日：2020-10-07
发明人： Kazunori TOGASHI , Mika SHINODA , Junichi IZUMIDA , Shunji MOCHIZUKI , Hiroki HIRAI , Yuta SAEGUSA
摘要： It is an object of the present invention to provide a polymer organic EL element that has a low driving voltage, high light emission efficiency, and a long lifespan. The present invention provides an organic electroluminescence element having a pair of electrodes and at least one organic layer between the electrodes, wherein the organic layer is constituted by two or more high molecular weight compounds including at least high molecular weight compounds α and β, and the high molecular weight compound α has a substituted triarylamine structural unit represented by a general formula (1) below and has a weight average molecular weight of 10,000 or more and less than 1,000,000 in terms of polystyrene. For the symbols in the formula, see the Description.
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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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