Patents by Inventor Won-Hee Jeong
Won-Hee Jeong 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: 11621440Abstract: The present invention provides a composition for forming an insulating layer for a lithium secondary battery, which includes a binder polymer; a coloring agent including at least one selected from the group consisting of an organic dye, an oil-soluble dye and an organic phosphor; and a solvent, and has a viscosity of 1,000 cP or more at 25° C.Type: GrantFiled: February 1, 2019Date of Patent: April 4, 2023Inventors: Sung Chul Park, Ung Ju Lee, Koo Seung Chung, Won Hee Jeong, Jung Woo Yoo, Young Jae Kim
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Publication number: 20200388850Abstract: The present invention provides a composition for forming an insulating layer for a lithium secondary battery, which includes a binder polymer; a coloring agent including at least one selected from the group consisting of an organic dye, an oil-soluble dye and an organic phosphor; and a solvent, and has a viscosity of 1,000 cP or more at 25 ° C.Type: ApplicationFiled: February 1, 2019Publication date: December 10, 2020Applicant: LG Chem, Ltd.Inventors: Sung Chul Park, Ung Ju Lee, Koo Seung Chung, Won Hee Jeong, Jung Woo Yoo, Young Jae Kim
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Patent number: 10673068Abstract: The present disclosure relates to a negative electrode active material having excellent output characteristics and causing little gas generation, and an electrode including the negative electrode active material. The negative electrode active material includes metal oxide-lithium titanium oxide (MO-LTO) composite particles which have a shape of secondary particles formed by aggregation of primary particles, wherein the primary particles have a core-shell structure including a core and a shell totally or at least partially covering the surface of the core, the core includes primary particles of lithium titanium oxide (LTO), and the shell includes a metal oxide.Type: GrantFiled: December 26, 2016Date of Patent: June 2, 2020Assignee: LG Chem, Ltd.Inventors: Min-A Park, Dae-Hong Kim, Jae-Kyung Kim, Won-Hee Jeong
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Patent number: 10411249Abstract: The present disclosure relates to a lithium secondary battery using lithium titanium oxide (LTO) as a negative electrode active material. More specifically, the present disclosure relates to a secondary battery having improved input and output characteristics through the optimization of the pore ratio of the LTO. The lithium secondary battery including the lithium titanium oxide negative electrode active material according to the present disclosure provides an effect of significantly improved output density through the maximization of reaction active sites with electrolyte due to a porous structure.Type: GrantFiled: January 21, 2016Date of Patent: September 10, 2019Assignee: LG CHEM, LTD.Inventors: Soo-Hyun Lim, Dae-Hong Kim, Won-Hee Jeong, Tae-Jin Park
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Patent number: 10062902Abstract: Disclosed is a positive electrode for secondary batteries manufactured by coating and rolling a slurry for a positive electrode mix including positive electrode active material particles on a current collector, wherein the positive electrode active material particles include one or more selected from the group consisting of lithium iron phosphate particles having an olivine crystal structure and lithium nickel-manganese-cobalt composite oxide particles according to Formula 1, the lithium nickel-manganese-cobalt composite oxide particles existing as secondary particles formed by agglomeration of primary particles, in an amount of greater than 50% and less than 90% based on the total volume of lithium nickel-manganese-cobalt composite oxide, and the lithium iron phosphate particles existing as primary particles in an amount of greater than 50% and less than 100% based on the total volume of lithium iron phosphate (Formula 1 is the same as defined in Claim 1).Type: GrantFiled: September 2, 2014Date of Patent: August 28, 2018Assignee: LG Chem, Ltd.Inventors: Won Hee Jeong, Su Hwan Kim, Sin Kyu Kim, Kyungkoo Lee, Jae Hyun Lee, Sun Jung Hwang, Geun Chang Chung
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Publication number: 20180233741Abstract: The present disclosure relates to a negative electrode active material having excellent output characteristics and causing little gas generation, and an electrode including the negative electrode active material. The negative electrode active material includes metal oxide-lithium titanium oxide (MO-LTO) composite particles which have a shape of secondary particles formed by aggregation of primary particles, wherein the primary particles have a core-shell structure including a core and a shell totally or at least partially covering the surface of the core, the core includes primary particles of lithium titanium oxide (LTO), and the shell includes a metal oxide.Type: ApplicationFiled: December 26, 2016Publication date: August 16, 2018Applicant: LG Chem, Ltd.Inventors: Min-A Park, Dae-Hong Kim, Jae-Kyung Kim, Won-Hee Jeong
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Patent number: 10044029Abstract: Disclosed herein is a lithium secondary battery including a positive electrode including lithium iron phosphate and layered lithium nickel manganese cobalt oxide as a positive electrode active material and a negative electrode including a negative electrode active material having a potential difference of 3.10 V or higher from the lithium iron phosphate at a point of 50% state of charge (SOC) afforded by the entirety of the lithium iron phosphate.Type: GrantFiled: June 5, 2014Date of Patent: August 7, 2018Assignee: LG Chem, Ltd.Inventors: Won Hee Jeong, Min Sun Cho, Sin Kyu Kim, Min Hee Lee, Seung Ryul Choi, Jae Hyun Lee, Geun Chang Chung
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Publication number: 20180013128Abstract: The present disclosure relates to a lithium secondary battery using lithium titanium oxide (LTO) as a negative electrode active material. More specifically, the present disclosure relates to a secondary battery having improved input and output characteristics through the optimization of the pore ratio of the LTO. The lithium secondary battery including the lithium titanium oxide negative electrode active material according to the present disclosure provides an effect of significantly improved output density through the maximization of reaction active sites with electrolyte due to a porous structure.Type: ApplicationFiled: January 21, 2016Publication date: January 11, 2018Applicant: LG CHEM, LTD.Inventors: Soo-Hyun LIM, Dae-Hong KIM, Won-Hee JEONG, Tae-Jin PARK
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Publication number: 20160204423Abstract: Disclosed is a positive electrode for secondary batteries manufactured by coating and rolling a slurry for a positive electrode mix including positive electrode active material particles on a current collector, wherein the positive electrode active material particles include one or more selected from the group consisting of lithium iron phosphate particles having an olivine crystal structure and lithium nickel-manganese-cobalt composite oxide particles according to Formula 1, the lithium nickel-manganese-cobalt composite oxide particles existing as secondary particles formed by agglomeration of primary particles, in an amount of greater than 50% and less than 90% based on the total volume of lithium nickel-manganese-cobalt composite oxide, and the lithium iron phosphate particles existing as primary particles in an amount of greater than 50% and less than 100% based on the total volume of lithium iron phosphateType: ApplicationFiled: September 2, 2014Publication date: July 14, 2016Applicant: LG Chem, Ltd.Inventors: Won Hee Jeong, Su Hwan Kim, Sin Kyu Kim, Kyungkoo Lee, Jae Hyun Lee, Sun Jung Hwang, Geun Chang Chung
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Publication number: 20160099462Abstract: Disclosed herein is a lithium secondary battery including a positive electrode including lithium iron phosphate and layered lithium nickel manganese cobalt oxide as a positive electrode active material and a negative electrode including a negative electrode active material having a potential difference of 3.10 V or higher from the lithium iron phosphate at a point of 50% state of charge (SOC) afforded by the entirety of the lithium iron phosphate.Type: ApplicationFiled: June 5, 2014Publication date: April 7, 2016Applicant: LG CHEM, LTD.Inventors: Won Hee Jeong, Min Sun Cho, Sin Kyu Kim, Min Hee Lee, Seung Ryul Choi, Jae Hyun Lee, Geun Chang Chung
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Publication number: 20110050083Abstract: A plasma display panel (PDP) includes a front substrate and a rear substrate that face each other; a pair of base portions disposed between the front substrate and the rear substrate and are concavely indented in directions away from each other; a pair of barrier walls disposed on the pair of base portions to define a discharge cell; a scan electrode and a sustain electrode that generate a mutual discharge in the discharge cell; an address electrode to cross the scan electrode and that generates an address discharge together with the scan electrode; a phosphor layer disposed in the discharge cell; and a discharge gas injected into the discharge cell.Type: ApplicationFiled: July 29, 2010Publication date: March 3, 2011Inventors: Jun-Yong Park, Won-Hee Jeong, Su-Bin Song, Seung-Hyun Son, Joo-Sik Jung
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Publication number: 20100207916Abstract: A plasma display panel (PDP) having high efficiency includes a front substrate and a rear substrate facing each other; element portions interposed between the front and rear substrates, and including a first element and a second element disposed in both sides of a main discharge space and a third and a fourth element respectively having a narrow width and protruding on the first element and the second element, wherein the first and second elements, and the third and fourth elements partition stepped spaces along a stepped surface in the main discharge space; sustain electrode pairs alternately disposed on the front substrate, extending along a first direction and causing mutual discharge; dielectric layers which are formed on the front substrate to cover the sustain electrode pairs and in which grooves are formed along a direction that is substantially perpendicular to the first direction; and address electrodes formed on the rear substrate and extending in a second direction that crosses the first direction.Type: ApplicationFiled: February 12, 2010Publication date: August 19, 2010Applicant: Samsung SDI Co., Ltd.Inventors: Won-Hee Jeong, Jun-Yong Park, Joo-Sik Jung, Su-Bin Song, Eui-Jeong Hwang, Seung-Hyun Son
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Publication number: 20100007586Abstract: A plasma display panel (PDP) is disclosed. In one embodiment, the PDP includes: i) first and second substrates facing each other, ii) a plurality of first barrier ribs formed between the first and second substrates and configured to define a plurality of discharge cells and iii) a plurality of second barrier ribs dividing each of the discharge cells into a first sub-discharge cell and a second sub-discharge cell, wherein a phosphor layer is formed in the first sub-discharge cells and is not formed in the second sub-discharge cells. According to one embodiment, the PDP has high driving efficiency obtained by improving an address voltage margin, and high image quality obtained by removing noise brightness caused by discharge light resulting from an address discharge, and is suitable for an image display with high efficiency and high resolution.Type: ApplicationFiled: March 26, 2009Publication date: January 14, 2010Applicant: Samsung SDI Co., Ltd.Inventors: Jun-Yong Park, Won-Hee Jeong, Joo-Sick Jung, Su-Bin Song
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Publication number: 20070052832Abstract: Provided are a digital image processing apparatus which can control the size of a display, and accordingly control a picture format, and a method of displaying an image. The digital image processing apparatus includes: a display on which a preview image of an object to be photographed or a reproduced image is displayed; a cover element configured to selectively cover a portion of the display; and an image controlling unit which outputs a signal to the display, the signal corresponding to a picture format that is determined according to an orientation of the cover element and, therefore, a size of the display that is exposed.Type: ApplicationFiled: June 23, 2006Publication date: March 8, 2007Applicant: Samsung Techwin Co., Ltd.Inventors: Sung-cheol Bae, Joo-bok Kim, Won-hee Jeong