Patents by Inventor Chang-Ho Oh
Chang-Ho Oh 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: 20240136531Abstract: A conductive composite material, a method of preparing the same, and a secondary battery including the same. The conductive composite material may increase the proportion of an active material when forming an electrode by chemically bonding a conductive material and a binder to each other. A method of preparing the conductive composite material comprises ionizing carbon-based particles in a predetermined polarity, ionizing PTFE particles in a polarity different from that of the carbon-based particles, and chemically bonding the ionized carbon-based particles and the ionized PTFE particles, which are ionized in different polarities, to each other.Type: ApplicationFiled: September 20, 2023Publication date: April 25, 2024Inventors: Seung Min Oh, Sung Ho Ban, Sang Hun Lee, Ko Eun Kim, Yoon Sung Lee, Chang Hoon Song, Hyeong Jun Choi, Jun Myoung Sheem, Jin Kyo Koo, Young Jun Kim
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Publication number: 20240120477Abstract: A positive electrode material for a lithium secondary battery has improved electron conductivity and surface stability because oxidation-treated carbon nanotubes are stably attached to the surface of an active material. According to one embodiment the positive electrode material includes a positive electrode active material core made of a Li—Ni—Co—Mn-M-O-based material (M=transition metal) and an oxidized carbon nanotube coating layer formed on the surface of the positive electrode active material core and including 1% to 3% by weight of oxidation-treated carbon nanotubes (OCNT) relative to 100% by weight of the positive electrode active material core.Type: ApplicationFiled: July 7, 2023Publication date: April 11, 2024Inventors: Seung Min Oh, Sung Ho Ban, Sang Hun Lee, Chang Hoon Song, Yoon Sung Lee, Ko Eun Kim, Van Chuong Ho, Jun Young Mun
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Publication number: 20240105918Abstract: A positive electrode material for a lithium secondary battery and a manufacturing method therefor are provided. The positive electrode material may have carbon nanotubes stably attached to a surface of an active material and may exhibit increased electron conductivity and improved surface stability. The positive electrode material for a lithium secondary battery may comprises: a positive electrode active material core comprising a Li—Ni—Co—Mn-M-O-based material, where M is a transition metal; and a carbon nanotube coating layer on a surface of the positive electrode active material core. Carbon nanotubes (CNT) may be in an amount of 1-5 wt %, based on 100 wt % of the positive electrode active material core.Type: ApplicationFiled: July 3, 2023Publication date: March 28, 2024Inventors: Seung Min Oh, Sung Ho Ban, Sang Hun Lee, Chang Hoon Song, Yoon Sung Lee, Ko Eun Kim, Van Chuong Ho, Jun Young Mun
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Patent number: 11940932Abstract: Provided is an operating method of a storage device. The method includes providing temperature information of each of a plurality of volatile memory devices in the storage device to a host device; and receiving a setting command related to a refresh operation of the plurality of volatile memory devices from the host device, wherein the plurality of volatile memory devices are classified into groups based on temperature information, and wherein the setting command indicates a number of rows of the plurality of volatile memory devices to be refreshed differently for each of the groups based on the temperature information.Type: GrantFiled: June 28, 2021Date of Patent: March 26, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Doo Hwan Oh, Seung-Hun Lee, Jin Hun Jeong, Chang Ho Yun, Kyung-Hee Han
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Publication number: 20240086603Abstract: A method of reinforcement learning of a neural network device for generating a verification vector for verifying a circuit design comprising a circuit block includes inputting a test vector to the circuit block, generating one or more rewards based on a coverage corresponding to the test vector, the coverage being determined based on a state transition of the circuit block based on the test vector, and applying the one or more rewards to a reinforcement learning.Type: ApplicationFiled: November 16, 2023Publication date: March 14, 2024Applicant: SAMSUNG ELECTRONICS CO, LTD.Inventors: In HUH, Jeong-hoon KO, Hyo-jin CHOI, Seung-ju KIM, Chang-wook JEONG, Joon-wan CHAI, Kwang-II PARK, Youn-sik PARK, Hyun-sun PARK, Young-min OH, Jun-haeng LEE, Tae-ho LEE
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Publication number: 20240071686Abstract: A dielectric ceramic composition for multi-layer ceramic capacitor for use in extreme environments is formed by mixing a main compos it ion and a composite oxide for low-temperature sintering, where the main composition includes 96.0 to 99.0 wt. % of BaTiO3 and 1.0 to 4.0 wt. % of Nb2O5 and Co3O4 as an additive. The main composition is formed by per forming a heat treatment for synthesis to form a core-shell structure having the BaTiO3 as a core and the Nb2O5 and Co3O4 covering the sur face of the BaTiO3. The composite oxide for low-temperature sintering is at least one selected from BaV2O6, Ba3V4O13 and Ba4V2O9.Type: ApplicationFiled: October 25, 2022Publication date: February 29, 2024Inventors: Young Joo OH, Jung Rag YOON, Chang Ho LEE
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Patent number: 11655530Abstract: The present disclosure relates to a copper alloy tube for a heat exchanger having excellent breaking strength and a method of manufacturing the same, and more particularly, to a Cu alloy tube having excellent breaking strength and thermal conductivity and suitable for use in a heat exchanger, and a method of manufacturing the same.Type: GrantFiled: May 20, 2021Date of Patent: May 23, 2023Assignee: LS METAL CO., LTD.Inventors: Ho Rim Chung, Chang Ho Oh, Dae Kyong Kim, Do Young Chung, Do Youl Lee, Dong Jun Kwak
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Publication number: 20220042154Abstract: The present disclosure relates to a copper alloy tube for a heat exchanger having excellent breaking strength and a method of manufacturing the same, and more particularly, to a Cu alloy tube having excellent breaking strength and thermal conductivity and suitable for use in a heat exchanger, and a method of manufacturing the same.Type: ApplicationFiled: May 20, 2021Publication date: February 10, 2022Inventors: Ho Rim CHUNG, Chang Ho OH, Dae Kyong KIM, Do Young CHUNG, Do Youl LEE, Dong Jun KWAK
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Patent number: 9362346Abstract: Disclosed is an organic light emitting display device that includes a first substrate; at least one pixel formed on the first substrate; a first power line formed on the first substrate, the first power line supplying a first voltage to the pixel; a second power line formed on the first substrate, the second power line supplying a second voltage to the pixel, the second voltage being different from the first voltage; and a second substrate formed over the first substrate, the second substrate including a first metal layer, a second metal layer, and an insulating layer formed between the first metal layer and the second metal layer, the insulating layer insulating the first metal layer and the second metal layer from each other, wherein the first metal layer is electrically connected with the first power line and the second metal layer is electrically connected to the second power line.Type: GrantFiled: December 3, 2014Date of Patent: June 7, 2016Assignee: LG DISPLAY CO., LTD.Inventors: Soon Il Yun, Chang Ho Oh, Ji Yeon Kang
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Patent number: 9158147Abstract: A liquid crystal display device includes first and second substrates and a liquid crystal layer interposed therebetween; a gate line, a data line and a common line over the first substrate in the display area; a thin film transistor connected to the gate line and the data line; a color filter layer over the thin film transistor; a first passivation layer over the color filter layer; an auxiliary common line, inner common electrodes and pixel electrodes over the first passivation layer, wherein the auxiliary common line includes a vertical portion and a horizontal portion, the inner common electrodes extend from the horizontal portion, and the pixel electrodes alternate the inner common electrodes; a light blocking pattern in the non-display area, wherein the light blocking pattern includes the same materials as the color filter layer.Type: GrantFiled: August 2, 2012Date of Patent: October 13, 2015Assignee: LG Display Co., Ltd.Inventors: Jong-Woo Kim, Chang-Ho Oh, Won-Hyung Yoo, Sang-Yoon Paik, Jun-Ki Kang
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Patent number: 9153192Abstract: Disclosed is a display device. The display device includes a panel in which a plurality of pixels are respectively formed in a plurality of pixel areas defined by intersections between a plurality of gate lines and a plurality of data lines, a source driving IC coupled to the plurality of data lines in a first non-display area of the panel and configured to respectively supply data voltages to the plurality of data lines, and an ESD circuit in which, to prevent static electricity from flowing into the plurality of data lines, in the first non-display area, a end of one side of the ESD circuit is coupled to a corresponding data line, a end of the other side is coupled to a power line, and a length of a channel through which a current flows is formed greater than a width of the channel.Type: GrantFiled: December 20, 2013Date of Patent: October 6, 2015Assignee: LG Display Co., LtdInventors: Ki Moon Jung, Chang Ho Oh, Shinji Takasugi
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Publication number: 20150171155Abstract: Disclosed is an organic light emitting display device that includes a first substrate; at least one pixel formed on the first substrate; a first power line formed on the first substrate, the first power line supplying a first voltage to the pixel; a second power line formed on the first substrate, the second power line supplying a second voltage to the pixel, the second voltage being different from the first voltage; and a second substrate formed over the first substrate, the second substrate including a first metal layer, a second metal layer, and an insulating layer formed between the first metal layer and the second metal layer, the insulating layer insulating the first metal layer and the second metal layer from each other, wherein the first metal layer is electrically connected with the first power line and the second metal layer is electrically connected to the second power line.Type: ApplicationFiled: December 3, 2014Publication date: June 18, 2015Inventors: Soon Il YUN, Chang Ho OH, Ji Yeon KANG
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Patent number: 8994380Abstract: A display device, which can prevent defects in a drive power transmission line and damage which is caused to a common electrode by such defects, and a method for detecting line defects of the display device are provided. The display device includes a plurality of drive power transmission lines for transmitting drive power to pixels, at least one defect detection line that crosses at least one drive power transmission line, and a defect detector for outputting a defect detection signal to the at least one defect detection line, collecting a feedback signal generated from the defect detection line according to the defect detection signal, and determining whether or not there is a defect in the at least one drive power transmission line based on comparison between the defect detection signal and the feedback signal.Type: GrantFiled: December 20, 2012Date of Patent: March 31, 2015Assignee: LG Display Co., Ltd.Inventors: Soon-Il Yun, Chang-Ho Oh, Young-Hee Lee
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Publication number: 20140185169Abstract: Disclosed is a display device. The display device includes a panel in which a plurality of pixels are respectively formed in a plurality of pixel areas defined by intersections between a plurality of gate lines and a plurality of data lines, a source driving IC coupled to the plurality of data lines in a first non-display area of the panel and configured to respectively supply data voltages to the plurality of data lines, and an ESD circuit in which, to prevent static electricity from flowing into the plurality of data lines, in the first non-display area, a end of one side of the ESD circuit is coupled to a corresponding data line, a end of the other side is coupled to a power line, and a length of a channel through which a current flows is formed greater than a width of the channel.Type: ApplicationFiled: December 20, 2013Publication date: July 3, 2014Applicant: LG Display Co., Ltd.Inventors: Ki Moon Jung, Chang Ho Oh, Shinji Takasugi
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Publication number: 20140084941Abstract: A display device, which can prevent defects in a drive power transmission line and damage which is caused to a common electrode by such defects, and a method for detecting line defects of the display device are provided. The display device includes a plurality of drive power transmission lines for transmitting drive power to pixels, at least one defect detection line that crosses at least one drive power transmission line, and a defect detector for outputting a defect detection signal to the at least one defect detection line, collecting a feedback signal generated from the defect detection line according to the defect detection signal, and determining whether or not there is a defect in the at least one drive power transmission line based on comparison between the defect detection signal and the feedback signal.Type: ApplicationFiled: December 20, 2012Publication date: March 27, 2014Applicant: LG DISPLAY CO., LTD.Inventors: Soon-Il Yun, Chang-Ho Oh, Young-Hee Lee
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Patent number: 8378354Abstract: A liquid crystal display panel where pixel cells defined by gate lines and data lines which are located to cross each other are arranged in a matrix shape, wherein each of the pixel cells includes a thin film transistor located at a crossing of the gate line and the data line, a pixel electrode connected to the thin film transistor, and a protrusion that overlaps a gate electrode of the thin film transistor to form a parasitic capacitor with the gate electrode and is connected to the pixel electrode, wherein each protrusion in the pixel cells of the liquid crystal display panel have an area determined in accordance with a location of the pixel cell in the liquid crystal display panel.Type: GrantFiled: June 26, 2006Date of Patent: February 19, 2013Assignee: LG Display Co., Ltd.Inventors: Chang Ho Oh, Hyun Cheol Jin, Jin Young Park, Young Mi Tak
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Publication number: 20130033654Abstract: A liquid crystal display device includes first and second substrates and a liquid crystal layer interposed therebetween; a gate line, a data line and a common line over the first substrate in the display area; a thin film transistor connected to the gate line and the data line; a color filter layer over the thin film transistor; a first passivation layer over the color filter layer; an auxiliary common line, inner common electrodes and pixel electrodes over the first passivation layer, wherein the auxiliary common line includes a vertical portion and a horizontal portion, the inner common electrodes extend from the horizontal portion, and the pixel electrodes alternate the inner common electrodes; a light blocking pattern in the non-display area, wherein the light blocking pattern includes the same materials as the color filter layer.Type: ApplicationFiled: August 2, 2012Publication date: February 7, 2013Applicant: LG DISPLAY CO., LTD.,Inventors: Jong-Woo Kim, Chang-Ho Oh, Won-Hyung Yoo, Sang-Yoon Paik, Jun-Ki Kang
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Patent number: 8284373Abstract: A liquid crystal display (LCD) device includes a first substrate having a plurality of column spacers fixed thereto, a second substrate facing the first substrate, and having a plurality of projections at portions corresponding to the column spacers, the projections contacting the column spacers, and a liquid crystal layer between the first and second substrates.Type: GrantFiled: June 17, 2009Date of Patent: October 9, 2012Assignee: LG Display Co., Ltd.Inventors: Chang Ho Oh, Jeom Jae Kim, Hong Man Moon, Sung Hak Jo, Mon Soo Kang
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Patent number: 8184249Abstract: A liquid crystal display device includes: a first substrate having a black matrix, a color filter layer and a common electrode; a second substrate having gate lines, data lines and thin film transistors connected to pixel electrodes; a first alignment layer on the first substrate; a second alignment layer on the second substrate; and a liquid crystal layer having a plurality of liquid crystal molecules and positioned between the first and second alignment layers, wherein each of the first and second alignment layers has a first area with ion-altered side chains and a second area with non-altered side chains.Type: GrantFiled: June 24, 2008Date of Patent: May 22, 2012Assignee: LG Display Co., Ltd.Inventors: Kyung Chan Kim, Tae Hoon Yoon, Jae Chang Kim, Joo Hong Seo, Chang Ho Oh, Ji Chul Lim
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Publication number: 20120041102Abstract: The present invention relates to a novel epoxy resin having improved heat-resistance, thermal expansion properties and processability, and to a thermosetting resin composition comprising the same. To this end, the present invention provides an epoxy resin of Chemical Formula 1 as disclosed in the Description, an epoxy resin composition comprising the same, and a packaging, substrate and transistor formed thereof. When a composition that contains an epoxy resin with a specific side functional group according to the present invention and/or an epoxy resin with a specific core structure is cured, a filler forms a strong chemical bond with the epoxy resin, thereby maximizing filling effects of the filler for the epoxy resin. Moreover, with the specific core structure, heat resistance and heat expansion properties of a cured product are substantially improved (CTE is reduced), and enhanced glass transition properties, strength and processability are demonstrated.Type: ApplicationFiled: April 23, 2010Publication date: February 16, 2012Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGYInventors: Hyun-Aee Chun, Seung-Han Shin, Hyun-Ah Kim, Chang-Ho Oh, Yun-Ju Kim, Sang-Yong Tak, Myong-Hoon Lee, Tae-Yun Kang