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公开(公告)号：US20230257607A1
公开(公告)日：2023-08-17
申请号：US18169753
申请日：2023-02-15
发明人： Keigo FURUTA , Hiroko ENDO , Takao MOTOYAMA , Yukika YAMADA , Tomoyuki KIKUCHI , Eun Joo JANG , Hyo Sook JANG , Jun-Mo YOO , Tae Ho KIM , Yuho WON
IPC分类号： C09D11/36 , C09D11/38 , H10K50/115
CPC分类号： C09D11/36 , C09D11/38 , H10K50/115
摘要： A quantum dot ink composition including a plurality of quantum dots, and a mixed solvent including a Solvent a and a Solvent b, the ink composition having a surface tension of about 30 mN/m to about 40 mN/m, where Solvent a is a cycloalkane compound with at least one ring carbon having a linear C4 to C16 alkyl group, and Solvent b is an aromatic hydrocarbon compound having a linear C2 to C12 alkyl group. A quantum dot electroluminescent device including a light emitting layer formed from the quantum dot composition.
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公开(公告)号：US20230287231A1
公开(公告)日：2023-09-14
申请号：US18180419
申请日：2023-03-08
发明人： Hiroko ENDO , Keigo FURUTA , Takao MOTOYAMA , Yukika YAMADA , Tomoyuki KIKUCHI , Eun Joo JANG , Hyo Sook JANG , Jun-Mo YOO , Tae Ho KIM , Yuho WON
IPC分类号： C09D11/50 , C09D11/037 , C09D11/033 , C09D11/322 , C09D11/36 , C09K11/02 , C09K11/88 , C09K11/08 , H10K50/115 , H10K71/13
CPC分类号： C09D11/50 , C09D11/037 , C09D11/033 , C09D11/322 , C09D11/36 , C09K11/025 , C09K11/883 , C09K11/0883 , H10K50/115 , H10K71/135 , B82Y20/00
摘要： A quantum dot ink composition including a plurality of quantum dots, and a mixed solvent including a Solvent a and a Solvent b, a quantum dot electroluminescent device including a light emitting layer formed from the quantum dot composition, and a method of making the quantum dot electroluminescent device are provided, where Solvent a is a cycloalkane compound with at least one ring carbon having a linear C4 to C16 alkyl group, an aromatic hydrocarbon compound having a linear C2 to C12 alkyl group, or a combination thereof, and Solvent b is a fluorinated alcohol.
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公开(公告)号：US20220213022A1
公开(公告)日：2022-07-07
申请号：US17560931
申请日：2021-12-23
发明人： Fumiaki KATO , Tomoyuki KIKUCHI , Hiroko ENDO , Keigo FURUTA , Keisuke KORAI , Mitsunori ITO , Naotoshi SUGANUMA , Takao MOTOYAMA , Dae Young CHUNG , Eun Joo JANG , Ha Il KWON , Hyo Sook JANG , Soonmin CHA , Tae Ho KIM
IPC分类号： C07C211/54 , H01L51/00 , C07C211/61 , C07D209/82
摘要： Provided is a compound represented by Chemical Formula 1 capable of manufacturing an EL device by inkjet printing. In Chemical Formula 1, n is an integer of greater than or equal to 3 and less than or equal to 10, X is a group represented by Chemical Formula 2 and a plurality of X's may be the same or different from each other, and Y is a group represented by Chemical Formula 3 and a plurality of Y's may be the same or different from each other.
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4.发明申请公开(公告)号：US20220077394A1
公开(公告)日：2022-03-10
申请号：US17470884
申请日：2021-09-09
发明人： Fumiaki KATO , Masashi TSUJI , Takao MOTOYAMA , Yusaku KONISHI , Keigo FURUTA , Takahiro FUJIYAMA , Tae Ho KIM , Won Sik YOON , Ha Il KWON , Dae Young CHUNG , Eun Joo JANG
摘要： A copolymer having a structural unit represented by Chemical Formula 1 is provided. The copolymer may improve performance, e.g., luminous efficiency, of an electroluminescence device. In Chemical Formula 1, the definition of each substituent is as described in the detailed description.
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公开(公告)号：US20200212306A1
公开(公告)日：2020-07-02
申请号：US16729646
申请日：2019-12-30
发明人： Yusaku KONISHI , Takahiro FUJIYAMA , Fumiaki KATO , Keigo FURUTA , Kiyohiko TSUTSUMI , Masashi TSUJI , Takao MOTOYAMA
IPC分类号： H01L51/00
摘要： A device having design film thicknesses, to suppress non-uniformity of a light emitting surface, to provide a quantum dot electroluminescence device with good luminous efficiency and light emitting life-span, and to provide an excellent quantum dot electroluminescence device with luminous efficiency and light emitting life-span. A quantum dot electroluminescence device including a hole transport layer, an electron transport layer, and a light emitting layer disposed between the hole transport layer and the electron transport layer, wherein the hole transport layer includes a polymer material and a low molecular material, the light emitting layer includes a quantum dot having a core-shell structure, and a residual film ratio of the hole transport layer is greater than or equal to about 95%.
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公开(公告)号：US20240114765A1
公开(公告)日：2024-04-04
申请号：US18128470
申请日：2023-03-30
发明人： Yusaku KONISHI , Takahiro FUJIYAMA , Fumiaki KATO , Keigo FURUTA , Kiyohiko TSUTSUMI , Masashi TSUJI , Takao MOTOYAMA
IPC分类号： H10K85/10
CPC分类号： H10K85/151 , H10K50/15
摘要： A device having design film thicknesses, to suppress non-uniformity of a light emitting surface, to provide a quantum dot electroluminescence device with good luminous efficiency and light emitting life-span, and to provide an excellent quantum dot electroluminescence device with luminous efficiency and light emitting life-span. A quantum dot electroluminescence device including a hole transport layer, an electron transport layer, and a light emitting layer disposed between the hole transport layer and the electron transport layer, wherein the hole transport layer includes a polymer material and a low molecular material, the light emitting layer includes a quantum dot having a core-shell structure, and a residual film ratio of the hole transport layer is greater than or equal to about 95%.
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公开(公告)号：US20210288258A1
公开(公告)日：2021-09-16
申请号：US17193078
申请日：2021-03-05
发明人： Masashi TSUJI , Takahiro FUJIYAMA , Yusaku KONISHI , Dae Young CHUNG , Fumiaki KATO , Jaejun CHANG , Keigo FURUTA , Takao MOTOYAMA , Eun Joo JANG , Hyo Sook JANG , Tae Ho KIM , Tomoyuki KIKUCHI , Yuho WON
摘要： The present disclosure provides a technique capable of improving durability (particularly luminescence life-span) of an electroluminescence. In order to solve the above problems, the present disclosure provides an arylamine-fluorene alternating copolymer having a structural unit (A) represented by Chemical Formula (1).
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8.发明申请公开(公告)号：US20200212322A1
公开(公告)日：2020-07-02
申请号：US16729628
申请日：2019-12-30
发明人： Fumiaki KATO , Masashi TSUJI , Takahiro FUJIYAMA , Keigo FURUTA , Takao MOTOYAMA , Yusaku KONISHI
IPC分类号： H01L51/00 , C08G73/02 , C09D179/02 , C09D5/24
摘要： An electroluminescent device with an improved luminous efficiency. The device includes a light emitting layer with an arylamine polymer including a structural unit (A) represented by Chemical Formula (1).
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公开(公告)号：US20190214566A1
公开(公告)日：2019-07-11
申请号：US16244164
申请日：2019-01-10
发明人： Fujiyama TAKAHIRO , Fumiaki KATO , Takao MOTOYAMA , Yusaku KONISHI , Mitsunori ITO , Furuta KEIGO
摘要： A polymer material includes a structural unit represented by Chemical Formula 1 X—Y Chemical Formula 1 wherein, in Chemical Formula 1, X and Y are as defined herein.
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