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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：US20210119164A1
公开(公告)日：2021-04-22
申请号：US17132971
申请日：2020-12-23
发明人： Tae Ho KIM , Sung Woo KIM , Eun Joo JANG , Dae Young CHUNG
摘要： An electroluminescent device comprising a first electrode and a second electrode facing each other, an emission layer disposed between the first electrode and the second electrode and including at least two light emitting particles, a hole transport layer disposed between the first electrode and the emission layer, and an electron transport layer disposed between the emission layer and the second electrode, wherein the electron transport layer comprises an inorganic layer disposed on the emission layer, the inorganic layer comprising a plurality of inorganic nanoparticles; and an organic layer directly disposed on at least a portion of the inorganic layer on a side opposite the emission layer, wherein a work function of the organic layer is greater than a work function of the inorganic layer.
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公开(公告)号：US20210119161A1
公开(公告)日：2021-04-22
申请号：US17072436
申请日：2020-10-16
发明人： Moon Gyu HAN , Heejae LEE , Eun Joo JANG , Tae Ho KIM , Kun Su PARK , Won Sik YOON , Hyo Sook JANG
IPC分类号： H01L51/50
摘要： A quantum dot light-emitting device including first electrode and a second electrode, a quantum dot layer between the first electrode and the second electrode, a first electron transport layer and a second electron layer disposed between the quantum dot layer and the second electrode. The second electron transport layer is disposed between the quantum dot layer and the first electron transport layer, wherein each of the first electron transport layer and the second electron transport layer includes an inorganic material. A lowest unoccupied molecular orbital energy level of the second electron transport layer is shallower than a lowest unoccupied molecular orbital energy level of the first electron transport layer, and a lowest unoccupied molecular orbital energy level of the quantum dot layer is shallower than a lowest unoccupied molecular orbital energy level of the second electron transport layer. An electronic device including the quantum dot light-emitting device.
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公开(公告)号：US20210091327A1
公开(公告)日：2021-03-25
申请号：US17026622
申请日：2020-09-21
发明人： Tae Ho KIM , Moon Gyu HAN , Hongkyu SEO , Heejae LEE , Eun Joo JANG
摘要： An electroluminescent device and a display device including the same are disclosed, wherein the electroluminescent device includes a first electrode; a hole transport layer disposed on the first electrode; a light emitting layer including a first light emitting layer disposed on the hole transport layer, the first emitting layer including a first quantum dot, and a second light emitting layer including a second quantum dot and an n-type organic semiconductor, the second light emitting layer disposed on the first light emitting layer; an electron transport layer disposed on the second light emitting layer; and a second electrode disposed on the electron transport layer.
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公开(公告)号：US20190280235A1
公开(公告)日：2019-09-12
申请号：US16299944
申请日：2019-03-12
发明人： Tae Ho KIM , Sung Woo KIM , Eun Joo JANG , Dae Young CHUNG
摘要： An electroluminescent device comprising a first electrode and a second electrode facing each other, an emission layer disposed between the first electrode and the second electrode and including at least two light emitting particles, a hole transport layer disposed between the first electrode and the emission layer, and an electron transport layer disposed between the emission layer and the second electrode, wherein the electron transport layer comprises an inorganic layer disposed on the emission layer, the inorganic layer comprising a plurality of inorganic nanoparticles; and an organic layer directly disposed on at least a portion of the inorganic layer on a side opposite the emission layer, wherein a work function of the organic layer is greater than a work function of the inorganic layer.
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36.发明公开公开(公告)号：US20240224556A1
公开(公告)日：2024-07-04
申请号：US18399957
申请日：2023-12-29
发明人： You Jung CHUNG , Sung Woo KIM , Dongchan KIM , Ilyoung LEE , Tae Ho KIM , Hong Kyu SEO
CPC分类号： H10K50/11 , C09K11/0811 , H10K50/16 , H10K71/12
摘要： A method of producing an electroluminescent device, the method including: disposing a light emitting layer including a semiconductor nanoparticle on a first electrode; applying a composition including a zinc oxide nanoparticle onto the light emitting layer to form an electron transport layer, the zinc oxide nanoparticle including a first metal and an alkali metal; and disposing the second electrode on the electron transport layer to produce the electroluminescent device, wherein a preparation of the zinc oxide nanoparticle includes admixing a first solution including a zinc precursor and a first metal precursor in a solvent with a second base and optionally a first base to prepare the zinc oxide nanoparticle, wherein the first base includes an organic base containing a C1 to C50 organic group, and the second base includes an inorganic base including the alkali metal.
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37.发明公开公开(公告)号：US20240065018A1
公开(公告)日：2024-02-22
申请号：US18498727
申请日：2023-10-31
发明人： Hongkyu SEO , Kwanghee KIM , Eun Joo JANG , Won Sik YOON , Tae Hyung KIM , Tae Ho KIM
CPC分类号： H10K50/16 , H10K71/00 , H10K85/60 , H10K50/115
摘要： Light emitting device, method of manufacturing the light emitting device, and display device including the light emitting device are disclosed. The light emitting device includes a first electrode and a second electrode each having a surface opposite the other, a light emitting layer including quantum dots that is disposed between the first electrode and the second electrode, and an electron auxiliary layer disposed between the light emitting layer and the second electrode, wherein the electron auxiliary layer includes metal oxide nanoparticles including an anion of an organic acid bound to a surface of the metal oxide nanoparticle.
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公开(公告)号：US20230043694A1
公开(公告)日：2023-02-09
申请号：US17944394
申请日：2022-09-14
发明人： Tae Ho KIM , Won Sik YOON , Jeong Hee LEE , Eun Joo JANG , Oul CHO
摘要： A light emitting device includes: a first electrode and a second electrode facing each other, an emissive layer disposed between the first electrode and the second electrode and including a quantum dot, an electron auxiliary layer disposed between the emissive layer and the second electrode and including a plurality of nanoparticles, and a polymer layer between a portion of the second electrode and the electron auxiliary layer, wherein the nanoparticles include a metal oxide including zinc, wherein the second electrode has a first surface facing a surface of the electron auxiliary layer and a second surface opposite to the first surface, and the polymer layer is disposed on a portion of the second surface and a portion of the surface of the electron auxiliary layer, and wherein the polymer layer includes a polymerization product of a thiol compound and an unsaturated compound having at least two carbon-carbon unsaturated bonds.
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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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公开(公告)号：US20220140272A1
公开(公告)日：2022-05-05
申请号：US17515652
申请日：2021-11-01
发明人： Hyo Sook JANG , Eun Joo JANG , Ilyoung LEE , Tae Ho KIM , Kun Su PARK , Jun-Mo YOO
摘要： A light emitting device and a production method thereof. The light emitting device includes a light emitting layer including a plurality of quantum dots, and an electron auxiliary layer disposed on the light emitting layer, the electron auxiliary layer configured to transport electrons, inject electrons into the light emitting layer, or a combination thereof, wherein the electron auxiliary layer includes a plurality of metal oxide nanoparticles and a nitrogen-containing metal complex. The metal oxide nanoparticles include zinc and optionally a dopant metal, the dopant metal includes Mg, Co, Ga, Ca, Zr, W, Li, Ti, Y, Al, Co, or a combination thereof and a mole ratio of nitrogen to zinc in the electron auxiliary layer is greater than or equal to about 0.001:1.
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