Patents by Inventor Seul Ki Park
Seul Ki Park 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: 20240134233Abstract: The present disclosure provides a partition wall for an image display device, the partition wall which satisfies 0.8?A/B<1.0 and 0.85?C/B<1.0 when the line width at a thickness of 95% from the lowermost end portion of the partition wall is A, the maximum line width at a thickness of 50 to 90% from the lowermost end portion of the partition wall is B, and the line width at a thickness of 10% from the lowermost end portion of the partition wall is C, with respect to the total thickness of the partition wall, a manufacturing method thereof, and an image display device including the partition wall. The partition wall for an image display device according to the present disclosure can be effectively applied to the manufacture of the color conversion pixels through the inkjet process, and the image display device including the partition wall has excellent luminance and maintains high luminance even when observed from the side surface, thereby exhibiting an effect of excellent viewing angle properties.Type: ApplicationFiled: February 24, 2022Publication date: April 25, 2024Inventors: Hun-Sik KIM, Tae-Gon KIM, Young-Soo KWON, Seul-Ki PARK
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Publication number: 20240113268Abstract: A display device includes a first electrode, an outer electrode surrounding the first electrode, a bank overlapping the outer electrode in a plan view, the bank including an opening that exposes the first electrode, a light emitting element disposed on the first electrode and in the opening of the bank, and a second electrode disposed on the light emitting element. The outer electrode may be electrically disconnected from the first electrode upon a bad contact between a light emitting member and the outer electrode. As a result, defective pixels can be repaired.Type: ApplicationFiled: May 30, 2023Publication date: April 4, 2024Applicant: Samsung Display Co., LTD.Inventors: Seul Ki KIM, Tae Jin KONG, Myeong Hee KIM, Ji Eun PARK, Myeong Su SO
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Publication number: 20240113151Abstract: A manufacturing method for a display device includes patterning a pixel defining pattern on a substrate; forming an emission stack structure; forming light emitting elements by etching the emission stack structure; and transferring the light emitting elements on a base layer and a pixel circuit layer including a pixel circuit on the base layer. The forming of the light emitting elements includes patterning the light emitting elements in an element forming area enclosed by the pixel defining pattern. The transferring of the light emitting elements includes disposing the light emitting elements in a sub-pixel area corresponding to the element forming area on the pixel circuit layer.Type: ApplicationFiled: June 2, 2023Publication date: April 4, 2024Applicant: Samsung Display Co., LTD.Inventors: Ji Eun PARK, Seul Ki KIM
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Publication number: 20240105934Abstract: A positive electrode active material for a lithium secondary battery has a mixture of microparticles having a predetermined average particle size (D50) and macroparticles having a larger average particle size (D50) than the microparticles. The microparticles have the average particle size (D50) of 1 to 10 ?m and are at least one selected from the group consisting of particles having a carbon material coating layer on all or part of a surface of primary macroparticles having an average particle size (D50) of 1 ?m or more, particles having a carbon material coating layer on all or part of a surface of secondary particles formed by agglomeration of the primary macroparticles, and a mixture thereof. The macroparticles are secondary particles having an average particle size (D50) of 5 to 20 ?m formed by agglomeration of primary microparticles having a smaller average particle size (D50) than the primary macroparticles.Type: ApplicationFiled: June 9, 2022Publication date: March 28, 2024Applicant: LG Energy Solution, Ltd.Inventors: Gi-Beom Han, Jong-Woo Kim, Eun-Sol Lho, Kang-Joon Park, Min Kwak, Seul-Ki Kim, Hyeong-Il Kim, Sang-Min Park, Sang-Wook Lee, Wang-Mo Jung
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Publication number: 20240077541Abstract: An apparatus for measuring voltage in a battery including battery cells connected in series includes a positive voltage sensing circuit to detect each voltage of the battery cells, received through sensing terminals, within a positive voltage range, a reverse voltage protection circuit including protection circuits, the printed circuits including first ends respectively connected to the plurality of sensing terminals different from each other, and second ends connected to each other, a boosting resistor including a first end connected to at least one electrode of the battery, and a reverse voltage sensing circuit to detect a voltage between the first node at which the second ends of the protection circuits are connected to each other and a second node to which a second end of the boosting resistor is connected, and based on the detection, output a signal indicating whether a reverse voltage is generated in the battery.Type: ApplicationFiled: August 21, 2023Publication date: March 7, 2024Applicant: HYUNDAI MOBIS CO., LTD.Inventors: Joon Ho PARK, Seul Ki Rom KIM
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Publication number: 20240072218Abstract: The present disclosure provides a display device and a method for fabricating the same. According to one or more embodiments, a display device includes a substrate, pixel electrodes above the substrate, light-emitting elements above the pixel electrodes, extending in a thickness direction of the substrate, and having a polyhedral shape in the thickness direction, a width of a middle portion of the polyhedral shape being greater than a width of an upper portion of the polyhedral shape and greater than a width of a lower portion of the polyhedral shape, and a common electrode above the light-emitting elements.Type: ApplicationFiled: May 2, 2023Publication date: February 29, 2024Inventors: Tae Jin KONG, Myeong Hee KIM, Seul Ki KIM, Ji Eun PARK, Myeong Su SO
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Patent number: 11866843Abstract: The present invention relates to an electrolytic copper foil for a secondary battery, having excellent physical properties at a low temperature, and a method for producing the electrolytic copper foil. The electrolytic copper foil for a secondary battery shows little change in the physical properties, such as tensile strength and elongation, of a copper foil even at a low temperature and thereby exhibits excellent cycle properties at the low temperature. The electrolytic copper foil for a secondary battery is produced from a plating solution, containing total organic carbon (TOC), cobalt, iron and zinc, by using a drum and coated with a cathode active material, wherein the ratio between the TOC, cobalt, iron and zinc contained in the electrolytic copper foil follows the following formula 1: TOC/(cobalt+iron+zinc)=1.0-1.2.Type: GrantFiled: April 13, 2021Date of Patent: January 9, 2024Assignee: LOTTE ENERGY MATERIALS CORPORATIONInventors: Sun Hyoung Lee, Tae Jin Jo, Seul-Ki Park, Ki Deok Song
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Patent number: 11749794Abstract: The present invention relates to an electrolytic copper foil for a secondary battery, and a method of producing the same. The electrolytic copper foil for a secondary battery exhibits a little change in a physical property caused by a difference in a crosshead speed when tensile strength and an elongation percentage of the electrolytic copper foil are measured, thereby achieving excellent charging and discharging characteristics of a battery and preventing exfoliation of an active material. The electrolytic copper foil for a secondary battery is produced from a plating solution containing Total Organic Carbon (TOC), cobalt, and iron by using a drum, in which a ratio of the TOC to the cobalt and the iron contained in the electrolytic copper foil follows Formula 1 below. TOC/(cobalt+iron)=1.3 to 1.Type: GrantFiled: May 2, 2021Date of Patent: September 5, 2023Assignee: ILJIN MATERIALS CO., LTD.Inventors: Sun Hyoung Lee, Tae Jin Jo, Seul-Ki Park, Ki Deok Song
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Patent number: 11629422Abstract: The present invention relates to an electrolytic copper foil for a secondary battery, having excellent flexural resistance, and a method for producing the electrolytic copper foil. The electrolytic copper foil for a secondary battery has excellent flexural resistance even without the use of many additives in a copper electrolyte when producing a copper foil. The electrolytic copper foil for a secondary battery according to the present invention is an electrolytic copper foil for a secondary battery, which is produced from a plating solution, containing total organic carbon (TOC), cobalt and arsenic, by using a drum and is coated with a negative electrode active material, wherein the ratio between the TOC, cobalt and arsenic contained in the electrolytic copper foil follows the following formula 1: TOC/(cobalt+arsenic)=1.30-1.55.Type: GrantFiled: April 13, 2021Date of Patent: April 18, 2023Assignee: ILJIN MATERIALS CO., LTD.Inventors: Sun Hyoung Lee, Tae Jin Jo, Seul-Ki Park, Ki Deok Song
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Patent number: 11626453Abstract: The present invention relates to a color filter including a color layer having at least one color, a quantum dot layer, and a partition wall in a unitary form for the color layer and the quantum dot layer, a method of manufacturing the color filter, and an image display device including the color filter. The color filter is capable of exhibiting a superior external light suppression effect, thereby improving luminous efficiency, and moreover, it is possible to simplify the process of manufacturing the color filter, thereby improving productivity. In addition, the image display device including the color filter can exhibit improved luminance to thus realize a high-quality image.Type: GrantFiled: August 26, 2019Date of Patent: April 11, 2023Assignee: DONGWOO FINE-CHEM CO., LTD.Inventors: Hun-Sik Kim, Seul-Ki Park, Jong-Soo Lee
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Patent number: 11584973Abstract: Provided is a steel sheet having excellent image clarity after painting, including: carbon (C): 0.001% to 0.03%, silicon (Si): 0.001% to 0.35%, manganese (Mn): 0.05% to 2.2%, phosphorus (P): 0.003% to 0.1%, sulfur (S): 0.001% or 0.025%, aluminum (Al): 0.01% to 0.1%, nitrogen (N): 0.001% to 0.007%, and a remainder of iron (Fe) and inevitable impurities. The microstructure of the steel sheet mainly is ferrite phases. An R-cube texture of a surface layer of the steel sheet is 5% or less by area %.Type: GrantFiled: September 13, 2018Date of Patent: February 21, 2023Assignee: POSCO CO., LTDInventors: Doo-Jin Paik, Seul-Ki Park, Chung-Won Kim, Jung-Ki Kim, Sung-Il Kim, Hyeon-Seok Hwang, Je-Woong Lee, Jeong-Eun Kim, Cho-Rong Hong
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Patent number: 11508967Abstract: The present invention relates to an electrolytic copper foil for a secondary battery and a method of producing the same, and more particularly, to an electrolytic copper foil for a secondary battery, which has little change in a physical property of a copper foil before and after vacuum drying in a process of producing an electrolytic copper foil, thereby exhibiting excellent cycle life in a battery test at a high-density negative electrode, and preventing cracking. The electrolytic copper foil for a secondary battery is produced from a plating solution containing Total Organic Carbon (TOC), zinc, and iron by using a drum, in which a ratio of the TOC to the zinc and the iron contained in the electrolytic copper foil follows Formula 1 below: TOC/(zinc+iron)=1.3 to 1.5.Type: GrantFiled: January 10, 2021Date of Patent: November 22, 2022Assignee: ILJIN MATERIALS CO., LTD.Inventors: Sun Hyoung Lee, Tae Jin Jo, Seul-Ki Park, Ki Deok Song
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Patent number: 11380898Abstract: The present invention relates to an electrolytic copper foil for a secondary battery and a method of producing the same, and more particularly, to an electrolytic copper foil for a secondary battery, which has little change in a physical property of a copper foil before and after vacuum drying in a process of producing an electrolytic copper foil, thereby exhibiting excellent cycle life in a battery test at a high-density negative electrode, and preventing cracking. The electrolytic copper foil for a secondary battery is produced from a plating solution containing Total Organic Carbon (TOC), zinc, and iron by using a drum, in which a ratio of the TOC to the zinc and the iron contained in the electrolytic copper foil follows Formula 1 below: TOC/(zinc+iron)=1.3 to 1.Type: GrantFiled: March 28, 2017Date of Patent: July 5, 2022Assignee: ILJIN MATERIALS CO., LTD.Inventors: Sun Hyoung Lee, Tae Jin Jo, Seul-Ki Park, Ki Deok Song
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Patent number: 11362336Abstract: The present disclosure provides an electrolytic copper foil composed of a single layer or a stack of two or more layers, wherein the electrolytic copper foil has Total Organic Carbon (TOC) content equal to or smaller than 4 ppm, and has chlorine (Cl) content equal to or smaller than 10 ppm, wherein the electrolytic copper foil has a thickness, a tensile strength, and an elongation satisfying a relationship 1 below: relationship 1: thickness (?m)/(tensile strength (kgf/mm2)*elongation (%))?0.1.Type: GrantFiled: January 8, 2019Date of Patent: June 14, 2022Assignee: ILJIN MATERIALS CO., LTD.Inventors: Sun Hyoung Lee, Seul-Ki Park, Tae Jin Jo, Ki Deok Song
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Publication number: 20220072632Abstract: A cutting apparatus and a method for chamfering a film stack using the cutting apparatus. The chamfering method reduces microcracks generated in the film stack during curved surface chamfering, reduces the maximum stress applied to the film stack, prevents lifting, and enables processing of a curved surface.Type: ApplicationFiled: March 5, 2019Publication date: March 10, 2022Inventors: Young Tae KIM, Seul Ki PARK, Bum Seung LIM, Do Weon YANG, Yu Shik HONG
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Publication number: 20220001463Abstract: Provided are a hole machining apparatus for an optical film, comprising: a clamping part for fixing a plurality of optical films in stacked laminated state; and a machining part for performing a hole operation on a predetermined region of the plurality of optical films so as to sequentially pass through the optical films along the laminated direction in a state where the optical films are fixed to the clamping part, wherein upon the hole operation, the machining part comprises a drill part provided to perform a primary hole machining operation and a bite unit provided to perform a secondary hole operation in the primary hole operation region. Also provided is a hole machining method for an optical film, comprising clamping a plurality of laminated optical films at a predetermined pressure in the hole machining apparatus.Type: ApplicationFiled: October 21, 2019Publication date: January 6, 2022Inventors: Seong Yong WE, Sung Wook HWANG, Bum Seung LIM, Byeong Chan CHOI, Seul Ki PARK, Ye Jin MUN, Woo Yong SONG, Zi Shuo ZHANG
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Patent number: 11171319Abstract: The present invention relates to an electrolytic copper foil for a secondary battery, and a method of producing the same. The electrolytic copper foil for a secondary battery exhibits a little change in a physical property caused by a difference in a crosshead speed when tensile strength and an elongation percentage of the electrolytic copper foil are measured, thereby achieving excellent charging and discharging characteristics of a battery and preventing exfoliation of an active material. The electrolytic copper foil for a secondary battery is produced from a plating solution containing Total Organic Carbon (TOC), cobalt, and iron by using a drum, in which a ratio of the TOC to the cobalt and the iron contained in the electrolytic copper foil follows Formula 1 below. TOC/(cobalt+iron)=1.3 to 1.Type: GrantFiled: March 28, 2017Date of Patent: November 9, 2021Assignee: ILJIN MATERIALS CO., LTD.Inventors: Sun Hyoung Lee, Tae Jin Jo, Seul-Ki Park, Ki Deok Song
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Patent number: 11162183Abstract: The present invention relates to an electrolytic copper foil for a secondary battery, having excellent physical properties at a low temperature, and a method for producing the electrolytic copper foil. The electrolytic copper foil for a secondary battery shows little change in the physical properties, such as tensile strength and elongation, of a copper foil even at a low temperature and thereby exhibits excellent cycle properties at the low temperature. The electrolytic copper foil for a secondary battery is produced from a plating solution, containing total organic carbon (TOC), cobalt, iron and zinc, by using a drum and coated with a negative electrode active material, wherein the ratio between the TOC, cobalt, iron and zinc contained in the electrolytic copper foil follows the following formula 1: TOC/(cobalt+iron+zinc)=1.0-1.2.Type: GrantFiled: March 28, 2017Date of Patent: November 2, 2021Assignee: ILJIN MATERIALS CO., LTD.Inventors: Sun Hyoung Lee, Tae Jin Jo, Seul-Ki Park, Ki Deok Song
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Patent number: 11142838Abstract: The present invention relates to an electrolytic copper foil for a secondary battery, having excellent flexural resistance, and a method for producing the electrolytic copper foil. The electrolytic copper foil for a secondary battery has excellent flexural resistance even without the use of many additives in a copper electrolyte when producing a copper foil. The electrolytic copper foil for a secondary battery according to the present invention is an electrolytic copper foil for a secondary battery, which is produced from a plating solution, containing total organic carbon (TOC), cobalt and arsenic, by using a drum and is coated with a negative electrode active material, wherein the ratio between the TOC, cobalt and arsenic contained in the electrolytic copper foil follows the following formula 1: TOC/(cobalt+arsenic)=1.30?1.55.Type: GrantFiled: March 28, 2017Date of Patent: October 12, 2021Assignee: ILJIN MATERIALS CO., LTD.Inventors: Sun Hyoung Lee, Tae Jin Jo, Seul-Ki Park, Ki Deok Song
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Patent number: 11118279Abstract: The present invention relates to an electrolytic copper foil for a secondary battery and a method of producing the same. The electrolytic copper foil for a secondary battery, in which a burr and curl of a negative electrode plate are inhibited from being formed after an electrolytic copper foil is coated with a negative electrode active material, thereby increasing the loading volume of a negative electrode and increasing a capacity. The electrolytic copper foil for a secondary battery is produced from a plating solution containing Total Organic Carbon (TOC) by using a drum, in which the electrolytic copper foil is formed of one surface that is in direct contact with the drum and the other surface that is an opposite surface of the one surface, and an average cross-sectional grain size of the one surface is 80% or less of an average cross-sectional grain size of the other surface.Type: GrantFiled: January 30, 2020Date of Patent: September 14, 2021Assignee: ILJIN MATERIALS CO., LTD.Inventors: Sun Hyoung Lee, Tae Jin Jo, Seul-Ki Park, Ki Deok Song