Patents by Inventor Dae-young Chung
Dae-young Chung has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11957046Abstract: An electroluminescent device includes a first electrode and a second electrode facing each other; an emission layer disposed between the first electrode and the second electrode and including a plurality of quantum dots and a first hole transporting material having a substituted or unsubstituted C4 to C20 alkyl group attached to a backbone structure; a hole transport layer disposed between the emission layer and the first electrode and including a second hole transporting material; and an electron transport layer disposed between the emission layer and the second electrode.Type: GrantFiled: September 6, 2019Date of Patent: April 9, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Moon Gyu Han, Dae Young Chung, Kwanghee Kim, Eun Joo Jang, Chan Su Kim, Kun Su Park, Won Sik Yoon
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Patent number: 11939422Abstract: A copolymer including a structural unit represented by Chemical Formula 1 wherein the copolymer is capable of improving luminous efficiency and durability, particularly, an improvement in luminescence life-span, of an electroluminescence device, particularly a quantum dot electroluminescence device.Type: GrantFiled: December 7, 2021Date of Patent: March 26, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Masashi Tsuji, Fumiaki Kato, Naotoshi Suganuma, Takahiro Fujiyama, Yusaku Konishi, Dae Young Chung, Ha Il Kwon, Soonmin Cha, Tae Ho Kim
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Publication number: 20240099045Abstract: 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.Type: ApplicationFiled: September 13, 2023Publication date: March 21, 2024Inventors: Heejae LEE, Tae Ho KIM, Jun-Mo YOO, Ilyoung LEE, Shin Ae JUN, Dae Young CHUNG, Moon Gyu HAN
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Publication number: 20240066565Abstract: A self-cleaning device comprises at least one first electrode disposed on a solid material layer, a first dielectric layer disposed on the first electrode, a hydrophobic layer disposed on the first dielectric layer, and at least one mechanical oscillation unit. Electrical oscillation for oscillating a droplet in a horizontal direction is generated by applying a first electric signal to the first electrode, thereby merging droplets formed on the hydrophobic layer, the mechanical oscillation unit moves the merged droplets in a specific direction or atomizes the merged droplets to remove the merged droplets by generating mechanical oscillation for oscillating the droplet in a vertical direction, and each of the droplets has a volume smaller than 3 ?l, and new droplet having a volume more than 3 ?l is generated by the merging.Type: ApplicationFiled: October 27, 2023Publication date: February 29, 2024Inventors: Sang Kug CHUNG, Kang Yong LEE, Jeong Min LEE, Dae Young LEE, Dae Geun KIM
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Patent number: 11917899Abstract: An arylamine-fluorene alternating copolymer having a structural unit (A) is represented by Chemical Formula (1): wherein Chemical Formula (1) is the same as described in the detailed description.Type: GrantFiled: March 5, 2021Date of Patent: February 27, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: 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
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Patent number: 11910697Abstract: 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.Type: GrantFiled: September 9, 2021Date of Patent: February 20, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: 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
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Patent number: 11910629Abstract: A light emitting device including a first electrode, a second electrode, a quantum dot layer disposed between the first electrode and the second electrode and a first auxiliary layer disposed between the quantum dot layer and the first electrode, wherein the first auxiliary layer includes nickel oxide nanoparticles having an average particle diameter of less than or equal to about nanometers (nm) and an organic ligand, a method of manufacturing the light emitting device, and a display device including the same.Type: GrantFiled: December 7, 2022Date of Patent: February 20, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Chan Su Kim, Kun Su Park, Tae Ho Kim, Eun Joo Jang, Dae Young Chung
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Patent number: 11812627Abstract: A quantum dot device including an anode; a cathode disposed substantially opposite to the anode; a hole injection layer disposed on the anode between the anode and the cathode; a hole transport layer disposed on the hole injection layer between the hole injection layer and the cathode; and a quantum dot layer disposed on the hole transport layer between the hole transport layer and the cathode, wherein the quantum dot layer includes a plurality of quantum dots, wherein the hole transport layer includes a hole transport material and an electron transport material, and wherein a lowest unoccupied molecular orbital (LUMO) energy level of the electron transport material and a lowest unoccupied molecular orbital (LUMO) energy level of the quantum dot layer is about 0.5 electron volts or less.Type: GrantFiled: October 27, 2021Date of Patent: November 7, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hongkyu Seo, Eun Joo Jang, Moon Gyu Han, Tae Ho Kim, Dae Young Chung
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Publication number: 20230345753Abstract: An electroluminescent device including a light emitting layer disposed between a first electrode and a second electrode, and an electron transport layer disposed between the multi-layered light emitting film and the second electrode, where the multi-layered light emitting film includes a first layer and a second layer disposed on the first layer, the first layer including a plurality of first semiconductor nanoparticles surrounded by a p-type organic semiconductor polymer, and the second layer including a plurality of second semiconductor nanoparticlesType: ApplicationFiled: April 21, 2023Publication date: October 26, 2023Inventors: Moon Gyu HAN, Dae Young CHUNG, Taehyung KIM, Heejae LEE
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Patent number: 11793011Abstract: A quantum dot device includes: a first electrode and a second electrode facing each other; a quantum dot layer between the first electrode and the second electrode, and an electron auxiliary layer between the quantum dot layer and the second electrode, the electron auxiliary layer including a first nanoparticle and a second nanoparticle which is larger than the first nanoparticle, wherein a work function of the first electrode is greater than a work function of the second electrode, and wherein a difference between a lowest unoccupied molecular orbital energy level of the quantum dot layer and a lowest unoccupied molecular orbital energy level of the electron auxiliary layer is less than about 1.1 electronvolts.Type: GrantFiled: July 28, 2021Date of Patent: October 17, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung Woo Kim, Tae Ho Kim, Eun Joo Jang, Hongkyu Seo, Sang Jin Lee, Dae Young Chung, Oul Cho
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Patent number: 11758746Abstract: An electroluminescent device includes a first electrode and a second electrode facing each other; a hole transport layer between the first electrode and the second electrode; a light emitting layer including a first light emitting layer disposed between the hole transport layer and the second electrode and including a first quantum dot and a second light emitting layer between the first light emitting layer and the second electrode and including a second quantum dot; and an electron transport layer between the light emitting layer and the second electrode. Each of the first and second light emitting layers emits first light, hole transport capability per unit area and electron transport capability per unit area of the first quantum dot are greater than hole transport capability per unit area and electron transport capability per unit area of the second quantum dot, respectively.Type: GrantFiled: August 22, 2022Date of Patent: September 12, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sujin Park, Yuho Won, Eun Joo Jang, Dae Young Chung, Sung Woo Kim, Jin A Kim, Yong Seok Han
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Publication number: 20230276643Abstract: A light emitting device includes: a first electrode and a second electrode with a surface facing the first electrode; an emission layer disposed between the first electrode and the second electrode and including a quantum dot (e.g., a plurality of quantum dots); and an electron auxiliary layer disposed between the emission layer and the second electrode. The electron auxiliary layer includes a first layer including a first metal oxide, and a second layer disposed on the first layer and including a second metal oxide. A roughness of an interface between the second layer and the second electrode is less than about 10 nm as determined by an electron microscopy analysis. An absolute value of a difference between a conduction band edge energy level of the second layer and a work function of the second electrode may be less than or equal to about 0.5 eV, and a conduction band edge energy level of the first layer may be less than the conduction band edge energy level of the second layer.Type: ApplicationFiled: April 14, 2023Publication date: August 31, 2023Inventors: Heejae LEE, Sung Woo KIM, Eun Joo JANG, Dae Young CHUNG, Moon Gyu HAN
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Publication number: 20230272277Abstract: Disclosed are a semiconductor nanocrystal particle including indium (In), zinc (Zn), and phosphorus (P), wherein a mole ratio of the zinc relative to the indium is greater than or equal to about 25:1, and the semiconductor nanocrystal particle includes a core including a first semiconductor material including indium, zinc, and phosphorus and a shell disposed on the core and including a second semiconductor material including zinc and sulfur, a method of producing the same, and an electronic device including the same. The semiconductor nanocrystal particle emits blue light having a maximum peak emission at a wavelength of less than or equal to about 470 nanometers.Type: ApplicationFiled: April 17, 2023Publication date: August 31, 2023Inventors: Tae Hyung KIM, Hyun A KANG, Eun Joo JANG, Dae Young CHUNG
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Patent number: 11744096Abstract: A light emitting device including a first electrode and a second electrode, and an emission layer disposed between the first electrode and the second electrode and including quantum dots, a first charge auxiliary layer disposed between the emission layer and the first electrode, and a second charge auxiliary layer disposed between the emission layer and the second electrode, wherein the emission layer comprises a first emission layer contacting the first charge auxiliary layer, a second emission layer disposed on the first emission layer, and a third emission layer disposed on the second emission layer. The hole mobility of the first emission layer decreases sequentially from the first emission layer to the third emission layer.Type: GrantFiled: February 15, 2022Date of Patent: August 29, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Dae Young Chung, Kwanghee Kim, Eun Joo Jang, Tae Hyung Kim, Hongkyu Seo, Heejae Lee, Jaejun Chang
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Patent number: 11737301Abstract: An electroluminescent device including a first electrode, a hole transport layer disposed on the first electrode, a first emission layer disposed on the hole transport layer, the first emission layer including a first light emitting particle on which a first ligand and a second ligand having a hole transporting property are attached, a second emission layer disposed on the first emission layer, the second emission layer including a second light emitting particle on which a first ligand and a third ligand having an electron transporting property are attached, an electron transport layer disposed on the second emission layer, and a second electrode disposed on the electron transport layer, wherein a solubility of the second ligand in a solvent is different than a solubility of the third ligand in the solvent and a display device including the same.Type: GrantFiled: April 9, 2021Date of Patent: August 22, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Dae Young Chung, Moon Gyu Han, Oul Cho, Tae Hyung Kim, Sujin Park, Hongkyu Seo, Eun Joo Jang
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Patent number: 11718786Abstract: Quantum dots including semiconductor nanocrystals, methods of producing the same, and quantum dot solutions and electronic devices including the same. The quantum dots do not include cadmium, lead, or a combination thereof. The quantum dots include an organic ligand and a halogen on the surfaces, and the quantum dots are dispersible in an organic solvent to form organic solutions.Type: GrantFiled: February 18, 2022Date of Patent: August 8, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Tae Hyung Kim, Kwanghee Kim, Eun Joo Jang, Dae Young Chung, Sujin Park
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Patent number: 11690242Abstract: Provided are 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 a display device including the same. The emissive layer comprises: a first emission layer disposed on the first electrode and having a hole transporting property; a second emission layer and a third emission layer disposed on the first emission layer; wherein the second emission layer comprises an organic compound having a bipolar transport property and the third emission layer has a composition different from the first emission layer and the second emission layer; wherein the first emission layer, the second emission layer, and the third emission layer comprises a plurality of quantum dots, and wherein the first emission layer, the second emission layer, and the third emission layer are configured to emit light of a same color.Type: GrantFiled: March 7, 2022Date of Patent: June 27, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Moon Gyu Han, Kwanghee Kim, Heejae Lee, Eun Joo Jang, Dae Young Chung
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Patent number: 11659725Abstract: A light emitting device includes: a first electrode and a second electrode with a surface facing the first electrode; an emission layer disposed between the first electrode and the second electrode and including a quantum dot (e.g., a plurality of quantum dots); and an electron auxiliary layer disposed between the emission layer and the second electrode. The electron auxiliary layer includes a first layer including a first metal oxide, and a second layer disposed on the first layer and including a second metal oxide. A roughness of an interface between the second layer and the second electrode is less than about 10 nm as determined by an electron microscopy analysis. An absolute value of a difference between a conduction band edge energy level of the second layer and a work function of the second electrode may be less than or equal to about 0.5 eV, and a conduction band edge energy level of the first layer may be less than the conduction band edge energy level of the second layer.Type: GrantFiled: July 6, 2020Date of Patent: May 23, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Heejae Lee, Sung Woo Kim, Eun Joo Jang, Dae Young Chung, Moon Gyu Han
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Patent number: 11643597Abstract: Disclosed are a semiconductor nanocrystal particle including indium (In), zinc (Zn), and phosphorus (P), wherein a mole ratio of the zinc relative to the indium is greater than or equal to about 25:1, and the semiconductor nanocrystal particle includes a core including a first semiconductor material including indium, zinc, and phosphorus and a shell disposed on the core and including a second semiconductor material including zinc and sulfur, a method of producing the same, and an electronic device including the same. The semiconductor nanocrystal particle emits blue light having a maximum peak emission at a wavelength of less than or equal to about 470 nanometers.Type: GrantFiled: March 17, 2021Date of Patent: May 9, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Tae Hyung Kim, Hyun A Kang, Eun Joo Jang, Dae Young Chung
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Patent number: 11637259Abstract: An electroluminescent device and a display device including the device are disclosed, wherein the electroluminescent device includes a first electrode; a hole transport layer disposed on the first electrode; an emission layer disposed on the hole transport layer, the emission layer including quantum dots; a self-assembled monomolecular layer disposed on the emission layer, the self-assembled monomolecular layer including self-assembled monomolecules; an electron transport layer disposed on the self-assembled monomolecular layer; and a second electrode disposed on the electron transport layer.Type: GrantFiled: July 30, 2020Date of Patent: April 25, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yeonkyung Lee, Eun Joo Jang, Hongkyu Seo, Dae Young Chung