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公开(公告)号：US20240090252A1
公开(公告)日：2024-03-14
申请号：US18463385
申请日：2023-09-08
发明人： Sung Woo KIM , Tae Ho KIM , You Jung CHUNG , Taehyung KIM , Ilyoung LEE , Heejae LEE , Moon Gyu HAN
IPC分类号： H10K50/115 , C09K11/54 , C09K11/62 , H10K50/16
CPC分类号： H10K50/115 , C09K11/54 , C09K11/623 , H10K50/16 , B82Y20/00
摘要： An electroluminescent device including a first electrode and a second electrode facing each other; a light emitting layer disposed between the first electrode and the second electrode; and an electron transport layer disposed between the light emitting layer and the second electrode. The light emitting layer includes a plurality of semiconductor nanoparticles, and the electron transport layer includes a plurality of zinc oxide nanoparticles, the zinc oxide nanoparticles further include magnesium and gallium.
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公开(公告)号：US20220230581A1
公开(公告)日：2022-07-21
申请号：US17578173
申请日：2022-01-18
发明人： Oul CHO , Tae Hyung KIM , Ilyoung LEE , Eun Joo JANG , Won Sik YOON
IPC分类号： G09G3/32
摘要： A light emitting element includes a first electrode, a second electrode, and a light emission layer interposed between the first electrode and the second electrode, where an emission efficiency of the light emission layer varies based on a voltage applied to at least one selected from the first electrode and the second electrode.
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3.发明公开公开(公告)号：US20240224562A1
公开(公告)日：2024-07-04
申请号：US18400128
申请日：2023-12-29
发明人： Chan Su KIM , Sung Woo KIM , Ilyoung LEE , You Jung CHUNG , Moon Gyu HAN
IPC分类号： H10K50/115 , H10K50/16 , H10K71/12
CPC分类号： H10K50/115 , H10K50/16 , H10K71/12
摘要： Disclosed are an electroluminescent device including a first electrode and a second electrode spaced apart from each other; a light-emitting layer disposed between the first and second electrodes; and an electron transport layer between the light-emitting layer and the second electrode; a production method thereof; and a display device including the same. The light-emitting layer includes a semiconductor nanoparticle, the electron transport layer includes a zinc oxide nanoparticle having a size of 1 nm or more to 15 nm or less, and the zinc oxide nanoparticle further includes magnesium and aluminum, and an amount of aluminum in the zinc oxide nanoparticle is greater than or equal to about 0.5 mol % and less than or equal to about 30 mol % based on a total amount of zinc, magnesium, and aluminum.
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4.发明公开公开(公告)号：US20240099045A1
公开(公告)日：2024-03-21
申请号：US18368010
申请日：2023-09-13
发明人： Heejae LEE , Tae Ho KIM , Jun-Mo YOO , Ilyoung LEE , Shin Ae JUN , Dae Young CHUNG , Moon Gyu HAN
IPC分类号： H10K50/115 , H10K50/828 , H10K71/12
CPC分类号： H10K50/115 , H10K50/828 , H10K71/12 , H10K2102/351
摘要： Provided are an electroluminescent device, a method of manufacturing the same, and a display device including the same, the electroluminescent device including a first electron auxiliary layer, a first light emitting layer, and a first electrode disposed on a first surface of a transparent electrode; and a second electron auxiliary layer, a second light emitting layer, and a second electrode disposed on a second surface of the transparent electrode, wherein the first electron auxiliary layer and the second electron auxiliary layer each include a plurality of zinc oxide nanoparticles, a ratio (t1/t0) of a thickness (t1) of the first electron auxiliary layer to a thickness (t0) of the transparent electrode and a ratio (t2/t0) of a thickness (t2) of the second electron auxiliary layer to the thickness (t0) of the transparent electrode are each in the range of about 0.1 to about 4.0.
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5.发明公开公开(公告)号：US20230235220A1
公开(公告)日：2023-07-27
申请号：US18159871
申请日：2023-01-26
发明人： Jihyun MIN , Eun Joo JANG , Hyo Sook JANG , Yong Seok HAN , Ilyoung LEE , Oul CHO
IPC分类号： C09K11/70 , H10K50/115
CPC分类号： C09K11/70 , H10K50/115
摘要： An electroluminescent device including a first electrode, a second electrode, and a light-emitting layer disposed between the first electrode and the second electrode, the light-emitting layer including a plurality of semiconductor nanoparticles, wherein the light-emitting layer is configured to emit green light, wherein the plurality of semiconductor nanoparticles include a first semiconductor nanocrystal including indium, phosphorus, and optionally zinc, and a second semiconductor nanocrystal including a zinc chalcogenide, wherein the zinc chalcogenide includes zinc, selenium, and sulfur, wherein in the plurality of the semiconductor nanoparticles, a mole ratio of zinc to indium is greater than or equal to about 60:1, and
wherein the electroluminescent device is configured to exhibit a T90 of greater than or equal to about 120 hours as measured with an initial driving luminance of about 2700 nit.-
6.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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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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