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公开(公告)号：US10451918B2
公开(公告)日：2019-10-22
申请号：US15978006
申请日：2018-05-11
发明人： Hyungguen Yoon , Jaehong Park , Jiyun Park , Kyunghee Lee , Jaebok Chang
IPC分类号： G02F1/1347 , G02F1/1335 , G02F1/1343
摘要： A display device includes a display panel and a light source providing light to the display panel. The display panel includes a first polarizing layer to which the light is incident, a first base layer disposed on the first polarizing layer, a first liquid crystal layer disposed on the first base layer and including a plurality of first nanocapsules, a second liquid crystal layer disposed on the first liquid crystal layer and including a plurality of second nanocapsules, a second polarizing layer disposed between the first liquid crystal layer and the second liquid crystal layer, a second base layer disposed on the second liquid crystal layer, and a third polarizing layer disposed on the second base layer. Each of the first and second liquid crystal layers controls a transmittance of the light based on an intensity of an electric field between pixel electrodes and a common electrode.
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公开(公告)号：US20230193129A1
公开(公告)日：2023-06-22
申请号：US17988630
申请日：2022-11-16
发明人： Jaebok Chang , Kyungsig Lee , Seunghee Jang
IPC分类号： C09K11/88 , C09D11/104 , C09K11/02
CPC分类号： C09K11/883 , C09D11/104 , C09K11/02 , B82Y20/00
摘要： A quantum-dot containing complex includes: a first ligand, which is a hydrocarbon compound including a hydrophilic moiety and a lipophilic moiety and has an aspect ratio of 5 or more; and a second ligand, which is a hydrocarbon compound including a hydrophilic moiety and a lipophilic moiety and has an aspect ratio of 4 or less, wherein the hydrophile-lipophile balances (HLBs) of the first ligand and the second ligand are each independently 7 or more.
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公开(公告)号：US20190107752A1
公开(公告)日：2019-04-11
申请号：US15978006
申请日：2018-05-11
发明人： Hyungguen Yoon , Jaehong Park , Jiyun Park , Kyunghee Lee , Jaebok Chang
IPC分类号： G02F1/1335 , G02F1/1343
CPC分类号： G02F1/133528 , G02F1/1334 , G02F1/133514 , G02F1/133617 , G02F1/1343 , G02F1/134363 , G02F1/1347 , G02F1/13471 , G02F2201/121 , G02F2201/123
摘要： A display device includes a display panel and a light source providing light to the display panel. The display panel includes a first polarizing layer to which the light is incident, a first base layer disposed on the first polarizing layer, a first liquid crystal layer disposed on the first base layer and including a plurality of first nanocapsules, a second liquid crystal layer disposed on the first liquid crystal layer and including a plurality of second nanocapsules, a second polarizing layer disposed between the first liquid crystal layer and the second liquid crystal layer, a second base layer disposed on the second liquid crystal layer, and a third polarizing layer disposed on the second base layer. Each of the first and second liquid crystal layers controls a transmittance of the light based on an intensity of an electric field between pixel electrodes and a common electrode.
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公开(公告)号：US20240150645A1
公开(公告)日：2024-05-09
申请号：US18325291
申请日：2023-05-30
发明人： Jaebok Chang , Kyungsig Lee , Seunghee Jang , Seihwan Ahn , Sanghee Yu
IPC分类号： C09K11/02 , C09K11/08 , C09K11/88 , H10K50/115
CPC分类号： C09K11/025 , C09K11/0883 , C09K11/883 , H10K50/115 , B82Y20/00
摘要： Embodiments provide a method of manufacturing a quantum dot-containing complex that includes preparing quantum dots, reacting the quantum dots with a first ligand, and reacting a resultant product of the reaction between the quantum dots and the first ligand with a second ligand, wherein the first ligand is a compound having a pKa value less than or equal to about 8, and the second ligand is a compound having a pKa value greater than about 8.
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公开(公告)号：US20230309333A1
公开(公告)日：2023-09-28
申请号：US18187591
申请日：2023-03-21
发明人： Kyungsig Lee , Jaebok Chang , Junehyuk Jung
IPC分类号： H10K50/115 , B82Y30/00 , C09K11/70 , C09K11/88
CPC分类号： H10K50/115 , B82Y30/00 , C09K11/70 , C09K11/883
摘要： A quantum dot composition and an electronic apparatus including the quantum dot composition are provided. The quantum dot composition includes a first quantum dot and a second quantum dot, and the first quantum dot and the second quantum dot each independently include a core; and a shell covering at least part of the core, the core of the first quantum dot includes a first semiconductor compound, the core of the second quantum dot includes a second semiconductor compound, the first semiconductor compound and the second semiconductor compound are different from each other, and a maximum emission wavelength of a photoluminescence (PL) spectrum of the first quantum dot is greater than a maximum emission wavelength of a PL spectrum of the second quantum dot.
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公开(公告)号：US20230183568A1
公开(公告)日：2023-06-15
申请号：US18062727
申请日：2022-12-07
发明人： Juo Nam , Jaebok Chang , Junehyuk Jung , Sungjae Kim , Donghee Lee , Taekjoon Lee
CPC分类号： C09K11/62 , B82Y20/00 , C09K11/64 , H01L33/504 , H01L2933/0041
摘要： Provided are: a method of preparing a quantum dot, the method including preparing a first particle including a Group III-V compound including gallium (Ga) and treating the first particle with an aluminum (Al) composition including an aluminum (Al) precursor; a quantum dot manufactured by the method; an optical member including the quantum dot; and an electronic apparatus including the quantum dot.
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公开(公告)号：US20220204843A1
公开(公告)日：2022-06-30
申请号：US17546882
申请日：2021-12-09
发明人： Junehyuk Jung , Seungwon Park , Junghoon Song , Baekhee Lee , Junwoo Lee , Jaebok Chang
摘要： A quantum dot, a method of preparing the quantum dot, and an optical member and an electronic device, each including the quantum dot, are provided. The quantum dot includes: a core including a Group III-V semiconductor compound alloyed with gallium (Ga); a first shell surrounding the core; and a second shell surrounding the first shell, wherein the first shell includes a first compound that includes a Group II-VI semiconductor compound, a Group III-V semiconductor compound, or a Group III-VI semiconductor compound, the second shell includes a second compound that includes a Group II-VI semiconductor compound, a Group III-V semiconductor compound, or a Group III-VI semiconductor compound, the first compound and the second compound are different from each other, and the atomic percentages of specific elements in a material of the core, elemental ratios in the first shell and second shell with respect to the core satisfy certain ranges.
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公开(公告)号：US12101993B2
公开(公告)日：2024-09-24
申请号：US17216330
申请日：2021-03-29
发明人： Jaebok Chang , Maksym V. Kovalenko , Viktoriia Morad , Kawon Pak , Chulsoon Park , Duckjong Suh , Baekhee Lee , Junwoo Lee , Taekjoon Lee
摘要： Provided are an organometallic halide compound represented by Formula 1 and having a zero-dimensional non-perovskite structure, and a light-emitting device, an optical member, and an apparatus, each including the organometallic halide compound. The light-emitting device may include a first electrode, a second electrode facing the first electrode, and an emission layer between the first electrode and the second electrode, where the emission layer includes the organometallic halide compound.
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公开(公告)号：US20240279540A1
公开(公告)日：2024-08-22
申请号：US18490665
申请日：2023-10-19
发明人： Juo Nam , Joonhyung Kim , Kawon Pak , Kyungsig Lee , Taekjoon Lee , Seunghee Jang , Jaebok Chang
IPC分类号： C09K11/08 , C09D11/03 , C09K11/06 , H10K50/115
CPC分类号： C09K11/08 , C09D11/03 , C09K11/06 , H10K50/115
摘要： A quantum dot composite including a quantum dot and a quantum dot ligand located on a surface of the quantum dot is provided. The quantum dot ligand includes a hydrophilic linking portion including an oxygen atom, a bonding portion linked to one side of the linking portion and including different functional groups bonded to the quantum dot, and a terminal portion linked to the linking portion at a side opposite to the linking portion. The quantum dot ligand is configured to prevent or reduce aggregation of quantum dots and improve their dispersion in a solvent thereby improving the light and/or heat resistance of electronic apparatus that utilize the quantum dot composite.
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公开(公告)号：US11725142B2
公开(公告)日：2023-08-15
申请号：US17546882
申请日：2021-12-09
发明人： Junehyuk Jung , Seungwon Park , Junghoon Song , Baekhee Lee , Junwoo Lee , Jaebok Chang
CPC分类号： C09K11/883 , C09K11/0883 , C09K11/7492 , C09K11/75 , B82Y20/00 , B82Y40/00
摘要： A quantum dot, a method of preparing the quantum dot, and an optical member and an electronic device, each including the quantum dot, are provided. The quantum dot includes: a core including a Group III-V semiconductor compound alloyed with gallium (Ga); a first shell surrounding the core; and a second shell surrounding the first shell, wherein the first shell includes a first compound that includes a Group II-VI semiconductor compound, a Group III-V semiconductor compound, or a Group III-VI semiconductor compound, the second shell includes a second compound that includes a Group II-VI semiconductor compound, a Group III-V semiconductor compound, or a Group III-VI semiconductor compound, the first compound and the second compound are different from each other, and the atomic percentages of specific elements in a material of the core, elemental ratios in the first shell and second shell with respect to the core satisfy certain ranges.
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