Patents by Inventor Hyo-Seop Kim
Hyo-Seop Kim 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: 20190245227Abstract: A method of diagnosing level sensor failure in a fuel cell water trap, the method may include: determining whether a water level of a level sensor is changed in a fuel cell water trap, adding an amount of charge according to an operating time and comparing the added amount of charge with a preset threshold amount of charge, according to the result of the, forcibly opening a drain valve according to determining whether a channel voltage of a specific channel is abnormal as the result of the comparison, and diagnosing a failure of the level sensor according to determining whether the channel voltage of the specific cell is recovered as a normal state when the drain valve is opened.Type: ApplicationFiled: September 26, 2018Publication date: August 8, 2019Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventor: Hyo-Seop KIM
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Patent number: 10082695Abstract: A display device includes a first substrate and a second substrate, which face each other, and each of which includes a display area and a non-display area disposed outside the display area, a first light-blocking layer disposed in the non-display area, and a dummy color layer, in which a boundary dividing the display area and the non-display area is defined, and which is disposed in the non-display area of the first substrate to be adjacent to the boundary, where the dummy color layer includes a section in which a distribution density of the dummy color layer is decreased from the boundary to the outside of the non-display area.Type: GrantFiled: June 15, 2016Date of Patent: September 25, 2018Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Hyun Woong Baek, Wan Soon Im, Jang Bog Ju, Seung Hwan Kim, Hyo Seop Kim, Seung Ho Lee, So Mi Jung, Kang Wook Heo
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Patent number: 10056629Abstract: A method for adjusting an output of a fuel cell system is capable of estimating a dry state of a fuel cell vehicle by comparing air flow rates, and adjusting a maximum output applicable to the fuel cell vehicle, thus enabling the fuel cell vehicle to be stably driven. The method for adjusting the output of the fuel cell system includes comparing an air flow rate required for driving and an actually introduced air flow rate to calculate an average air flow rate, and calculating an available output of the vehicle using preset mapping data with respect to the average air flow rate.Type: GrantFiled: June 15, 2016Date of Patent: August 21, 2018Assignee: Hyundai Motor CompanyInventor: Hyo Seop Kim
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Patent number: 9966616Abstract: An apparatus and method for controlling a purge valve of a fuel cell vehicle are provided to reduce a consumption amount of hydrogen and improve fuel efficiency. In particular, whether oxygen concentration in a channel of an anode of a fuel cell stack exceeds a reference value is estimated while restarting the vehicle after the vehicle is parked. Then, an open time of a purge valve is adjusted based on a parking time of a vehicle when the hydrogen concentration is greater than the reference value.Type: GrantFiled: November 11, 2015Date of Patent: May 8, 2018Assignee: Hyundai Motor CompanyInventors: Hyun Jae Lee, Hyo Seop Kim, Yei Sik Jeon, Bu Kil Kwon
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Patent number: 9893372Abstract: A perceiving method and system of a stack state for a fuel cell system is provided. The method includes determining whether a vehicle provided with the fuel cell system is started and calculating a time until first condensate water is discharged through a condensate water discharging valve provided in the fuel cell system after the vehicle starts. Then, an average time until the first condensate water is discharged after the vehicle starts, at the previous starting of the vehicle is calculated over a predetermined number of times. The two calculated times are compared to determine the state of the stack or cathode of the fuel cell system without requiring additional separate components.Type: GrantFiled: April 26, 2015Date of Patent: February 13, 2018Assignee: Hyundai Motor CompanyInventors: Hyun Jae Lee, Hyo Seop Kim, Yei Sik Jeon
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Publication number: 20170162885Abstract: A method for adjusting an output of a fuel cell system is capable of estimating a dry state of a fuel cell vehicle by comparing air flow rates, and adjusting a maximum output applicable to the fuel cell vehicle, thus enabling the fuel cell vehicle to be stably driven. The method for adjusting the output of the fuel cell system includes comparing an air flow rate required for driving and an actually introduced air flow rate to calculate an average air flow rate, and calculating an available output of the vehicle using preset mapping data with respect to the average air flow rate.Type: ApplicationFiled: June 15, 2016Publication date: June 8, 2017Inventor: Hyo Seop Kim
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Publication number: 20170160583Abstract: A display device includes a first substrate and a second substrate, which face each other, and each of which includes a display area and a non-display area disposed outside the display area, a first light-blocking layer disposed in the non-display area, and a dummy color layer, in which a boundary dividing the display area and the non-display area is defined, and which is disposed in the non-display area of the first substrate to be adjacent to the boundary, where the dummy color layer includes a section in which a distribution density of the dummy color layer is decreased from the boundary to the outside of the non-display area.Type: ApplicationFiled: June 15, 2016Publication date: June 8, 2017Inventors: Hyun Woong BAEK, Wan Soon IM, Jang Bog JU, Seung Hwan KIM, Hyo Seop KIM, Seung Ho LEE, So Mi JUNG, Kang Wook HEO
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Publication number: 20170059911Abstract: A display substrate has first and second conductive layers separated from one another by an insulation layer. The first and second conductive layers are used to integrally form on the display substrate, pixel units in a relatively central display area of the substrate and integrated gate driving circuitry as well as associated wirings thereof in one or more peripheral areas. The first and second conductive layers are covered by a first protection layer made of a first electrically insulative material. A second and supplementing protection layer is provided on top of the first protection layer. The supplementing protection layer (buffer layer) is formed of a material different from that of the first protection layer so as to provide supplemental resistance against corrosive chemical agents and supplemental resistance against formation of cracks.Type: ApplicationFiled: November 14, 2016Publication date: March 2, 2017Inventors: KOOK-HYUN CHOI, HYO-TAEK LIM, DONG-HO SHIN, YOUNG-JE CHO, YONG-JO KIM, SANG-YONG NO, SUNG-HOON KIM, HYO-SEOP KIM
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Publication number: 20160336607Abstract: An apparatus and method for controlling a purge valve of a fuel cell vehicle are provided to reduce a consumption amount of hydrogen and improve fuel efficiency. In particular, whether oxygen concentration in a channel of an anode of a fuel cell stack exceeds a reference value is estimated while restarting the vehicle after the vehicle is parked. Then, an open time of a purge valve is adjusted based on a parking time of a vehicle when the hydrogen concentration is greater than the reference value.Type: ApplicationFiled: November 11, 2015Publication date: November 17, 2016Inventors: Hyun Jae Lee, Hyo Seop Kim, Yei Sik Jeon, Bu Kil Kwon
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Patent number: 9494811Abstract: A display substrate has first and second conductive layers separated from one another by an insulation layer. The first and second conductive layers are used to integrally form on the display substrate, pixel units in a relatively central display area of the substrate and integrated gate driving circuitry as well as associated wirings thereof in one or more peripheral areas. The first and second conductive layers are covered by a first protection layer made of a first electrically insulative material. A second and supplementing protection layer is provided on top of the first protection layer. The supplementing protection layer (buffer layer) is formed of a material different from that of the first protection layer so as to provide supplemental resistance against corrosive chemical agents and supplemental resistance against formation of cracks.Type: GrantFiled: January 29, 2014Date of Patent: November 15, 2016Assignee: Samsung Display Co., Ltd.Inventors: Kook-Hyun Choi, Hyo-Taek Lim, Dong-Ho Shin, Young-Je Cho, Yong-Jo Kim, Sang-Yong No, Sung-Hoon Kim, Hyo-Seop Kim
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Patent number: 9401521Abstract: Disclosed is a technique of diagnosing a state of a fuel cell system. The technique includes configuring a processor to calculate a duty ratio and an average output current, based on real-time driving data for a preset driving period, during operation of a fuel cell vehicle; obtain a reference current value from the calculated duty ratio and the calculated average output current; and determine a state of a fuel cell system by choosing a state graph corresponding to the obtained reference current value among a plurality of state graphs which vary depending on each reference current value.Type: GrantFiled: July 1, 2014Date of Patent: July 26, 2016Assignee: Hyundai Motor CompanyInventors: Hyo Seop Kim, Il Hee Cho, Jong Hyun Lee
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Publication number: 20160172693Abstract: A perceiving method and system of a stack state for a fuel cell system is provided. The method includes determining whether a vehicle provided with the fuel cell system is started and calculating a time until first condensate water is discharged through a condensate water discharging valve provided in the fuel cell system after the vehicle starts. Then, an average time until the first condensate water is discharged after the vehicle starts, at the previous starting of the vehicle is calculated over a predetermined number of times. The two calculated times are compared to determine the state of the stack or cathode of the fuel cell system without requiring additional separate components.Type: ApplicationFiled: April 26, 2015Publication date: June 16, 2016Inventors: Hyun Jae Lee, Hyo Seop Kim, Yei Sik Jeon
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Publication number: 20160141663Abstract: The present disclosure relates to a method of controlling an air flow in a fuel cell, capable of periodically supplying air to a cathode and alleviating a rate at which a hydrogen concentration of an anode is decreased in an Idle stop state in which air supply to the cathode of a stack is stopped in order to suppress dry phenomenon of the fuel cell.Type: ApplicationFiled: June 2, 2015Publication date: May 19, 2016Inventors: Jae Hoon Kim, Hyo Seop Kim, Yei Sik Jeon
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Patent number: 9343030Abstract: A gate driving circuit includes N stages (where N is a natural number greater than or equal to 2). The N stages are cascaded, and each of the N stages has a gate line connected thereto. A first stage group includes k stages of the N stages (where k is a natural number less than N), and the first stage group outputs a first output signal in response to a start signal. A second stage group (including N?k stages) generates a second output signal in response to the first output signal and outputs the second output signal to a corresponding gate line. The first stage group includes a first buffer and a second buffer, each of which receives the start signal. A size of the first buffer is smaller than a size of the second buffer.Type: GrantFiled: July 21, 2010Date of Patent: May 17, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Hyuk-Jin Kim, Kyung-ho Park, Sang Yong No, YoungJe Cho, Kook Hyun Choi, Yongjo Kim, Sung Hoon Kim, Hyo-Seop Kim
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Patent number: 9261749Abstract: A display device includes gate lines, data lines, first wires and second wires extending in the directions of the gate lines and data lines, and pixels having a first subpixel and a second subpixel each. The first subpixel has a first subpixel electrode and a first switching element, and the second subpixel has a second subpixel electrode and second and third switching elements. The control terminals of the three switching elements are connected to the same gate line, and the input terminals of the first and second switching elements are connected to the same data line. The first and second switching elements have output terminals connected to the first and second subpixel electrodes, respectively. The second switching element's output terminal connects to the third switching element, which has an output terminal connected to a second wire. The first wires and the second wires are connected in a pixel.Type: GrantFiled: January 7, 2015Date of Patent: February 16, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jae Hwa Park, Jong-In Kim, Yeo Geon Yoon, Min-Wook Park, Jang-Il Kim, Joon-Chul Goh, Hyo-Seop Kim, Bum Ki Baek, Young-Soo Yoon, Hak Bum Choi, Kyung Ho Kim
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Publication number: 20150244010Abstract: Disclosed is a technique of diagnosing a state of a fuel cell system. The technique includes configuring a processor to calculate a duty ratio and an average output current, based on real-time driving data for a preset driving period, during operation of a fuel cell vehicle; obtain a reference current value from the calculated duty ratio and the calculated average output current; and determine a state of a fuel cell system by choosing a state graph corresponding to the obtained reference current value among a plurality of state graphs which vary depending on each reference current value.Type: ApplicationFiled: July 1, 2014Publication date: August 27, 2015Inventors: Hyo Seop Kim, Il Hee Cho, Jong Hyun Lee
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Publication number: 20150115275Abstract: A display device includes gate lines, data lines, first wires and second wires extending in the directions of the gate lines and data lines, and pixels having a first subpixel and a second subpixel each. The first subpixel has a first subpixel electrode and a first switching element, and the second subpixel has a second subpixel electrode and second and third switching elements. The control terminals of the three switching elements are connected to the same gate line, and the input terminals of the first and second switching elements are connected to the same data line. The first and second switching elements have output terminals connected to the first and second subpixel electrodes, respectively. The second switching element's output terminal connects to the third switching element, which has an output terminal connected to a second wire. The first wires and the second wires are connected in a pixel.Type: ApplicationFiled: January 7, 2015Publication date: April 30, 2015Inventors: Jae Hwa PARK, Jong-In KIM, Yeo Geon YOON, Min Wook PARK, Jang-Il KIM, Joon-Chul GOH, Hyo-Seop KIM, Bum Ki BAEK, Young-Soo YOON, Hak Bum CHOI, Kyung Ho KIM
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Patent number: 8952878Abstract: A display device includes gate lines, data lines, first wires and second wires extending in the directions of the gate lines and data lines, and pixels having a first subpixel and a second subpixel each. The first subpixel has a first subpixel electrode and a first switching element, and the second subpixel has a second subpixel electrode and second and third switching elements. The control terminals of the three switching elements are connected to the same gate line, and the input terminals of the first and second switching elements are connected to the same data line. The first and second switching elements have output terminals connected to the first and second subpixel electrodes, respectively. The second switching element's output terminal connects to the third switching element, which has an output terminal connected to a second wire. The first wires and the second wires are connected in a pixel.Type: GrantFiled: June 14, 2012Date of Patent: February 10, 2015Assignee: Samsung Display Co., Ltd.Inventors: Jae Hwa Park, Yeo Geon Yoon, Jang-Il Kim, Kyung Ho Kim, Jong-In Kim, Min-Wook Park, Bum Ki Baek, Joon-Chul Goh, Young-Soo Yoon, Hak Bum Choi, Hyo-Seop Kim
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Patent number: 8912991Abstract: A liquid crystal display includes: a first gate line; a first data line crossing the first gate line; a first switching element connected with the first gate line and the first data line; a second switching element connected with the first gate line and the first data line; a first liquid crystal capacitor connected with the first switching element; a second liquid crystal capacitor connected with the second switching element; a boost switching element which is turned on during a time period not overlapping a time period during which the first switching element is turned on; and a boost capacitor including a first terminal connected with the boost switching element and a second terminal connected with the first liquid crystal capacitor.Type: GrantFiled: July 22, 2011Date of Patent: December 16, 2014Assignee: Samsung Display Co., Ltd.Inventors: Jong-In Kim, Min-Wook Park, Eun-Guk Lee, Young-Goo Song, Kyoung-Tai Han, Hyuk-Jin Kim, Hak-Bum Choi, Hyo-Seop Kim
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Patent number: 8773626Abstract: A display substrate includes a gate line, a data line and a pixel electrode. The gate line is extended in a first direction on a base substrate. The data line is extended in a second direction crossing to the first direction. The pixel electrode is disposed on a pixel area of the base substrate. The pixel electrode includes a first sub-electrode and a second sub-electrode spaced apart by an opening portion, and receives a voltage having a same polarity. The opening portion includes a straight line portion extended in the first direction, a diagonal line portion extended in a third direction crossing the first and second directions, and a protrusion portion disposed in a length direction of the straight line portion at a portion of the pixel electrode where the straight line portion and the diagonal line portion meet.Type: GrantFiled: October 6, 2010Date of Patent: July 8, 2014Assignee: Samsung Display Co., Ltd.Inventors: Sung-Hoon Kim, Sang-Yong No, Young-Je Cho, Kook-Hyun Choi, Yong-Jo Kim, Hyo-Seop Kim