Patents by Inventor Dong Ki KEUM
Dong Ki KEUM 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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Publication number: 20240128304Abstract: A method for manufacturing an LED lighting device includes forming a separation film on a substrate, patterning the separation film, forming LEDs on the separation film, bonding a stretch film to top surfaces of the LEDs and spacing between the LEDs, separating the separation film from the substrate, stretching the stretch film, exposing the top surfaces of the LEDs, and forming electrodes on the top surfaces of the LEDs, and a bottom surface of the separation film or bottom surfaces of the LEDs.Type: ApplicationFiled: February 24, 2022Publication date: April 18, 2024Applicant: DONGWOO FINE-CHEM CO., LTD.Inventors: Byoungin KIM, Dong Ki KEUM, Jin LEE
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Patent number: 11360612Abstract: Provided is a conductive pattern having at least one unit conductive pattern forming one touch pixel according to an aspect of the present invention. The at least one unit conductive pattern includes a plurality of nanostructures each having opposite ends. A ratio of nanostructures, both opposite ends of which are in contact with edges of the at least one unit conductive pattern to all nanostructures included in the at least one unit conductive pattern is 70% or more.Type: GrantFiled: December 1, 2020Date of Patent: June 14, 2022Assignee: DONGWOO FINE-CHEM CO., LTD.Inventors: Byung Hoon Song, Dong Ki Keum, Dae Chul Park, Sun Young Song, Hwansil Jang
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Publication number: 20220123244Abstract: A transparent electrode structure according to an embodiment of the present invention includes a transparent substrate, a transparent electrode layer disposed on the transparent substrate and including a multi-layered structure of a transparent oxide electrode layer and a metal layer, and a barrier structure disposed between the transparent substrate and the transparent electrode layer and including at least one barrier material of an aluminum oxide-zinc oxide composite (AlZO) material, silazane, siloxane or a silicon-containing inorganic material. Electrical, optical and chemical stability may be improved by a combination of the transparent electrode layer and the barrier structure.Type: ApplicationFiled: January 3, 2022Publication date: April 21, 2022Inventors: Han Tae RYU, Dong Ki KEUM, Myeong Won LEE
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Patent number: 11011281Abstract: A conductive sheet according to an aspect of the present invention includes a first nanostructure and a second nanostructure disposed to intersect each other. A thickness of an intersect region of the first nanostructure and the second nanostructure is 0.6 to 0.9 times the sum of thicknesses of non-intersection regions of the first nanostructure and the second nanostructure.Type: GrantFiled: August 22, 2019Date of Patent: May 18, 2021Assignee: DONGWOO FINE-CHEM CO., LTD.Inventors: Byung Hoon Song, Dong Ki Keum, Dae Chul Park
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Publication number: 20210089151Abstract: Provided is a conductive pattern having at least one unit conductive pattern forming one touch pixel according to an aspect of the present invention. The at least one unit conductive pattern includes a plurality of nanostructures each having opposite ends. A ratio of nanostructures, both opposite ends of which are in contact with edges of the at least one unit conductive pattern to all nanostructures included in the at least one unit conductive pattern is 70% or more.Type: ApplicationFiled: December 1, 2020Publication date: March 25, 2021Applicant: DONGWOO FINE-CHEM CO., LTD.Inventors: Byung Hoon SONG, Dong Ki KEUM, Dae Chul PARK, Sun Young SONG, Hwansil JANG
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Patent number: 10884555Abstract: Provided is a conductive pattern having at least one unit conductive pattern forming one touch pixel according to an aspect of the present invention. The at least one unit conductive pattern includes a plurality of nanostructures each having opposite ends. A ratio of nanostructures, both opposite ends of which are in contact with edges of the at least one unit conductive pattern to all nanostructures included in the at least one unit conductive pattern is 70% or more.Type: GrantFiled: February 5, 2016Date of Patent: January 5, 2021Assignee: DONGWOO FINE-CHEM CO., LTD.Inventors: Byung Hoon Song, Dong Ki Keum, Dae Chul Park, Sun Young Song, Hwansil Jang
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Publication number: 20190377439Abstract: A conductive sheet according to an aspect of the present invention includes a first nanostructure and a second nanostructure disposed to intersect each other. A thickness of an intersect region of the first nanostructure and the second nanostructure is 0.6 to 0.9 times the sum of thicknesses of non-intersection regions of the first nanostructure and the second nanostructure.Type: ApplicationFiled: August 22, 2019Publication date: December 12, 2019Applicant: DONGWOO FINE-CHEM CO., LTD.Inventors: Byung Hoon SONG, Dong Ki KEUM, Dae Chul PARK
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Patent number: 10437112Abstract: A transparent electrode includes a first metal oxide layer, a metal layer and a second metal oxide layer. The first metal oxide layer, the metal layer and the second metal oxide layer are sequentially stacked to form a mesh pattern. A reflectivity at a wavelength of 550 nm of the mesh pattern is in a range from 5% to 20%.Type: GrantFiled: July 27, 2017Date of Patent: October 8, 2019Assignee: DONGWOO FINE-CHEM CO., LTD.Inventors: Euk Kun Yoon, Sung Jin Noh, Han Tae Ryu, Dong Ki Keum, Min Soo Seo, Eung Goo Cho
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Patent number: 10430003Abstract: A conductive sheet according to an aspect of the present invention includes a first nanostructure and a second nanostructure disposed to intersect each other. A thickness of an intersect region of the first nanostructure and the second nanostructure is 0.6 to 0.9 times the sum of thicknesses of non-intersection regions of the first nanostructure and the second nanostructure.Type: GrantFiled: February 5, 2016Date of Patent: October 1, 2019Assignee: DONGWOO FINE-CHEM CO.. LTD.Inventors: Byung Hoon Song, Dong Ki Keum, Dae Chul Park
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Publication number: 20190095025Abstract: The present invention relates to a force touch sensor and a manufacturing method thereof. The force touch sensor according to the present invention includes a lower electrode layer bonded to a display, an upper electrode layer bonded to a polarizing plate, and a transparent dielectric layer bonded to the lower electrode layer and the upper electrode layer. According to the present invention, thin film characteristics and flexible characteristics may be improved, manufacturing costs and manufacturing time may be reduced, and manufacturing processes may be simplified and product yield may be improved by simplifying functional layers constituting the force touch sensor.Type: ApplicationFiled: September 20, 2018Publication date: March 28, 2019Inventors: Dong Ki Keum, Ji Yeon Kim, Gwang Yong Tak
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Publication number: 20180046005Abstract: A transparent electrode includes a first metal oxide layer, a metal layer and a second metal oxide layer. The first metal oxide layer, the metal layer and the second metal oxide layer are sequentially stacked to form a mesh pattern. A reflectivity at a wavelength of 550 nm of the mesh pattern is in a range from 5% to 20%.Type: ApplicationFiled: July 27, 2017Publication date: February 15, 2018Inventors: Euk Kun YOON, Sung Jin NOH, Han Tae RYU, Dong Ki KEUM, Min Soo SEO, Eung Goo CHO
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Publication number: 20180024671Abstract: Provided is a conductive pattern having at least one unit conductive pattern forming one touch pixel according to an aspect of the present invention. The at least one unit conductive pattern includes a plurality of nanostructures each having opposite ends. A ratio of nanostructures, both opposite ends of which are in contact with edges of the at least one unit conductive pattern to all nanostructures included in the at least one unit conductive pattern is 70% or more.Type: ApplicationFiled: February 5, 2016Publication date: January 25, 2018Applicant: DONGWOO FINE-CHEM CO., LTD.Inventors: Byung Hoon SONG, Dong Ki KEUM, Dae Chul PARK, Sun Young SONG, Hwansil JANG
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Publication number: 20180018040Abstract: A conductive sheet according to an aspect of the present invention includes a first nanostructure and a second nanostructure disposed to intersect each other. A thickness of an intersect region of the first nanostructure and the second nanostructure is 0.6 to 0.9 times the sum of thicknesses of non-intersection regions of the first nanostructure and the second nanostructure.Type: ApplicationFiled: February 5, 2016Publication date: January 18, 2018Applicant: DONGWOO FINE-CHEM CO., LTD.Inventors: Byung Hoon SONG, Dong Ki KEUM, Dae Chul PARK