Patents by Inventor Seok-Hwan Lee
Seok-Hwan Lee 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: 20200388891Abstract: A battery module includes a battery cell stack in which a plurality of battery cells are stacked; and a first plate and a second plate disposed on one side and the other side of the battery cell stack, respectively, to discharge heat generated by the plurality of battery cells externally. The plurality of battery cells include a receiving portion having a quadrangular shape, and a sealing portion, partially disposed on an outer periphery of the receiving portion. The battery cell stack is provided, by alternately stacking, at least one first battery cell of which a surface on which the sealing portion is not disposed faces the first plate, and at least one second battery cell of which a surface on which the sealing portion is not disposed faces the second plate.Type: ApplicationFiled: June 4, 2020Publication date: December 10, 2020Inventors: Ha Neul CHOI, Seok Hwan LEE, Hae Ryong JEON, Seung Hoon JU
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Publication number: 20200365956Abstract: A battery module includes a cell unit, including a plurality of battery cells disposed on both surfaces of a unit plate, and a case accommodating the cell unit and provided with a cooling device on at least one surface of the case. The unit plate includes a plurality of receiving spaces formed by a plate portion, having a flat surface, and a side portion protruding upwardly and downwardly of the plate portion from both sides of the plate portion. The plurality of battery cells are received in each of the receiving spaces.Type: ApplicationFiled: May 13, 2020Publication date: November 19, 2020Inventors: Hae Ryong JEON, Seok Min KIM, Seok Hwan LEE, Seung Hoon JU, Ha Neul CHOI
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Publication number: 20200365844Abstract: A battery module includes a cell unit, including a plurality of battery cells disposed on both surfaces of a unit plate, and a case accommodating the cell unit. The unit plate includes a plurality of receiving spaces, in which the plurality of battery cells are disposed, and a connection member disposed. between the receiving spaces to electrically connect the battery cells to each other.Type: ApplicationFiled: May 13, 2020Publication date: November 19, 2020Inventors: Hae Ryong JEON, Seok Hwan LEE, Seung Hoon JU, Ha Neul CHOI
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Publication number: 20200343604Abstract: A battery module includes at least one battery cell; a first plate disposed on one side of the at least one battery cell to dissipate heat generated by the at least one battery cell externally; and a second plate disposed on the other side of the at least one battery cell to dissipate heat generated by the at least one battery cell externally, wherein an electrode lead of the at least one battery cell is disposed between the first plate and the second plate, and is disposed to be biased toward the first plate.Type: ApplicationFiled: April 24, 2020Publication date: October 29, 2020Inventors: Seok Hwan Lee, Seok Min Kim, Hae Ryong Jeon, Seung Hoon Ju, Ha Neul Choi
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Publication number: 20190315626Abstract: Provided are a graphene-based compound, a preparation method thereof, a single-phase composition for preparing a graphene-based compound, and a graphene quantum dot. Specifically, provided are a graphene-based compound prepared from a single-phase composition for preparing a graphene-based compound including hydrocarbyl amine, a hydroxyl group-containing carbon source, and an acid, a preparation method thereof, a single-phase composition for preparing a graphene-based compound, and a graphene quantum dot.Type: ApplicationFiled: November 16, 2018Publication date: October 17, 2019Applicants: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY, KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATIONInventors: O Ok PARK, Seok Hwan LEE, Sang Hyuk IM
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Patent number: 10431140Abstract: A display device includes a display unit including pixels coupled to scan lines and data lines, a data driver which supplies a data signal to pixels through the data lines, a scan driver which generates a scan signal using a first scan voltage and a second scan voltage, and supplying the scan signal to the pixels through the scan lines, a processor which generates first scan voltage information by setting a first scan voltage level, based on an ambient temperature of the display device, a timing controller which generates a power control signal using the first scan voltage information and delta voltage information, and a power supply which generates the first scan voltage and a delta voltage using the power control signal, and generates the second scan voltage by dropping the delta voltage from the first scan voltage.Type: GrantFiled: April 20, 2016Date of Patent: October 1, 2019Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Se Young Heo, Jong Jae Lee, Seok Hwan Lee, Jun Ki Hong
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Patent number: 10424917Abstract: An overcurrent protective system includes a current detector which detects a current flowing in an element which is to be protected by the overcurrent protective system, an overcurrent counting unit which selects an overcurrent sensing level corresponding to the element among a plurality of overcurrent sensing levels which are threshold values becoming standards for determining whether the current detected by the current detector is a normal current or an overcurrent and which determines whether the current is the overcurrent or not by comparing the current with the selected overcurrent sensing level, and a controller which decreases an output voltage of a circuit which is to be protected by the overcurrent protective system and includes the element when the current flowing in the element is determined as the overcurrent.Type: GrantFiled: April 22, 2016Date of Patent: September 24, 2019Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jun ki Hong, Jong Jae Lee, Seok Hwan Lee, Se Young Heo
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Patent number: 10186960Abstract: A power supply includes a voltage converter circuit which converts an input voltage into an output voltage and outputs the output voltage, a voltage controller which controls the voltage converter circuit in response to a first feedback voltage or a second feedback voltage, a feedback terminal which supplies the first feedback voltage, an internal voltage divider circuit which supplies the second feedback voltage, and a switch unit which transfers the first feedback voltage or the second feedback voltage to the voltage controller.Type: GrantFiled: June 16, 2016Date of Patent: January 22, 2019Assignee: SAMSUNG DISPLAY CO. LTD.Inventors: Seok Hwan Lee, Jong Jae Lee, Yang Uk Nam, Se Young Heo, Jun Ki Hong
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Patent number: 9694340Abstract: In a reactor for solid ammonium salt, a method of controlling the reactor, and a NOx emission purification system using solid ammonium salt and selective catalytic reduction, the reactor includes a first chamber and a second chamber. The first chamber has an exhaust and a first heating element. Solid ammonium salt is in the first chamber. The second chamber has a second heating element and is formed at a side of the first chamber. The first chamber is connected with the second chamber. Solid ammonium salt is in the second chamber. An amount of the solid ammonium salt in the second chamber is more than that in the first chamber, so that the first chamber is heated and cooled faster than the second chamber.Type: GrantFiled: December 12, 2013Date of Patent: July 4, 2017Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALSInventors: Hong-Suk Kim, Gyu-Baek Cho, Yong-Jin Kim, Jun-Ho Lee, Young-Il Jeong, Seok-Hwan Lee, Cheol-Woong Park, Chang-Ki Kim, Sun-Youp Lee, Jang-Hee Lee, Seung-Mook Oh, Kern-Yong Kang
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Publication number: 20170170726Abstract: A power supply includes a voltage converter circuit which converts an input voltage into an output voltage and outputs the output voltage, a voltage controller which controls the voltage converter circuit in response to a first feedback voltage or a second feedback voltage, a feedback terminal which supplies the first feedback voltage, an internal voltage divider circuit which supplies the second feedback voltage, and a switch unit which transfers the first feedback voltage or the second feedback voltage to the voltage controller.Type: ApplicationFiled: June 16, 2016Publication date: June 15, 2017Inventors: Seok Hwan LEE, Jong Jae LEE, Yang Uk NAM, Se Young HEO, Jun Ki HONG
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Publication number: 20170098409Abstract: A display device includes a display unit including pixels coupled to scan lines and data lines, a data driver which supplies a data signal to pixels through the data lines, a scan driver which generates a scan signal using a first scan voltage and a second scan voltage, and supplying the scan signal to the pixels through the scan lines, a processor which generates first scan voltage information by setting a first scan voltage level, based on an ambient temperature of the display device, a timing controller which generates a power control signal using the first scan voltage information and delta voltage information, and a power supply which generates the first scan voltage and a delta voltage using the power control signal, and generates the second scan voltage by dropping the delta voltage from the first scan voltage.Type: ApplicationFiled: April 20, 2016Publication date: April 6, 2017Inventors: Se Young HEO, Jong Jae LEE, Seok Hwan LEE, Jun Ki HONG
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Publication number: 20170070045Abstract: An overcurrent protective system includes a current detector which detects a current flowing in an element which is to be protected by the overcurrent protective system, an overcurrent counting unit which selects an overcurrent sensing level corresponding to the element among a plurality of overcurrent sensing levels which are threshold values becoming standards for determining whether the current detected by the current detector is a normal current or an overcurrent and which determines whether the current is the overcurrent or not by comparing the current with the selected overcurrent sensing level, and a controller which decreases an output voltage of a circuit which is to be protected by the overcurrent protective system and includes the element when the current flowing in the element is determined as the overcurrent.Type: ApplicationFiled: April 22, 2016Publication date: March 9, 2017Inventors: Jun ki HONG, Jong Jae LEE, Seok Hwan LEE, Se Young HEO
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Patent number: 9545038Abstract: Disclosed is an inverter housing which is installed in a vehicle, and more particularly, an inverter housing which is capable of having a high heat dissipation effect and realizing a compact size. To this end, the inverter housing according to the present invention includes a body having a plate shape; a plurality of capacitor insertion portions formed to be recessed in a first direction of the body, so that capacitors are inserted thereinto, and integrally arranged to be spaced from each other; a plurality of switching device installation portions configured as spaces in which switching devices are installed, and arranged between the capacitor insertion portions in a second direction of the body opposite to the first direction; and a plurality of heat dissipation fins installed in the first direction of the body to face the switching devices with the body interposed therebetween.Type: GrantFiled: June 17, 2015Date of Patent: January 10, 2017Assignee: MANDO CORPORATIONInventor: Seok Hwan Lee
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Patent number: 9529561Abstract: A display device is provided. The display device includes a display panel, a backlight unit, and a luminance comparison unit. The backlight unit is configured to supply light to the display panel. The luminance comparison unit is configured to compare a measured luminance of the display panel with a reference luminance range. The backlight unit includes a light source unit, a DC-DC converter, and a driving current controller. The DC-DC converter is configured to supply a driving voltage to the light source unit, and the driving current controller is configured to control a driving current flowing to the light source unit based on the comparison result of the luminance comparison unit.Type: GrantFiled: August 6, 2014Date of Patent: December 27, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Seok Hwan Lee, Dae-Sik Lee, Hwan Woong Lee, Seung Young Choi
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Patent number: 9514689Abstract: A display device includes at least one light source array configured to provide a display panel with light, a dimming signal generating unit configured to receive an image data signal and generate a dimming signal, a first comparator configured to receive the dimming signal output from the dimming signal generating unit and a preset critical value and generate a comparison signal, a dimming modulating unit configured to receive the comparison signal output from the first comparator and the dimming signal output from the dimming signal generating unit and modulate the dimming signal, a constant current controller configured to receive the dimming signal output from the dimming modulating unit and a voltage from a sensor node, and to control a light driving current driving the light source array, and a resistor controller configured to change resistors connected to the sensor node by the comparison signal output from the first comparator.Type: GrantFiled: March 10, 2015Date of Patent: December 6, 2016Assignee: Samsung Display Co., Ltd.Inventors: Seok Hwan Lee, Seung Young Choi, Byung Kyou Min, Dae Sik Lee
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Patent number: 9459138Abstract: An ultrasonic transducer, and an ultrasonic wave generating apparatus and an ultrasonic system including the same. The ultrasonic transducer includes a light-absorbing layer configured to absorb light incident on the light-absorbing layer and to generate heat based on the absorbed light; and a thermoelastic layer which is disposed on the light-absorbing layer and which is configured to thermally expand based on the heat to generate ultrasonic waves.Type: GrantFiled: July 31, 2013Date of Patent: October 4, 2016Assignees: SAMSUNG ELECTRONICS CO., LTD., SEOUL NATIONAL UNIVERSITY R&DB FOUNDATIONInventors: Yong-seop Yoon, Sung-chan Kang, Yong-hyup Kim, Mi-ae Park, Jai-ick Yoh, Seok-hwan Lee, Woon-bae Kim, Jong-seok Kim, Hye-lynn Song, Eui-yun Jang
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Patent number: 9381466Abstract: The present invention relates to a technology of reducing nitrogen oxide (NOx) which is harmful discharge gas discharged from an internal combustion engine or a combustor, and to an exhaust gas purification system which inputs solid ammonium salt such as ammonium carbamate or ammonium carbonate into a reactor, thermally decomposes and converts the solid ammonium salt into the ammonia by using engine cooling water, exhaust gas, or an electric heater, which are installed in the reactor, and reduces the nitrogen oxide included in the exhaust pipe on a selective catalytic reduction into nitrogen by injecting the ammonia by using a pressure regulator and a dosing valve.Type: GrantFiled: April 2, 2013Date of Patent: July 5, 2016Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALSInventors: Hong Suk Kim, Gyu Baek Cho, Jun Ho Lee, Seok Hwan Lee, Yong Gyu Lee, Se-Jong Woo
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Publication number: 20160078821Abstract: A display device includes at least one light source array configured to provide a display panel with light, a dimming signal generating unit configured to receive an image data signal and generate a dimming signal, a first comparator configured to receive the dimming signal output from the dimming signal generating unit and a preset critical value and generate a comparison signal, a dimming modulating unit configured to receive the comparison signal output from the first comparator and the dimming signal output from the dimming signal generating unit and modulate the dimming signal, a constant current controller configured to receive the dimming signal output from the dimming modulating unit and a voltage from a sensor node, and to control a light driving current driving the light source array, and a resistor controller configured to change resistors connected to the sensor node by the comparison signal output from the first comparator.Type: ApplicationFiled: March 10, 2015Publication date: March 17, 2016Inventors: Seok Hwan LEE, Seung Young CHOI, Byung Kyou MIN, Dae Sik LEE
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Publication number: 20150373870Abstract: Disclosed is an inverter housing which is installed in a vehicle, and more particularly, an inverter housing which is capable of having a high heat dissipation effect and realizing a compact size. To this end, the inverter housing according to the present invention includes a body having a plate shape; a plurality of capacitor insertion portions formed to be recessed in a first direction of the body, so that capacitors are inserted thereinto, and integrally arranged to be spaced from each other; a plurality of switching device installation portions configured as spaces in which switching devices are installed, and arranged between the capacitor insertion portions in a second direction of the body opposite to the first direction; and a plurality of heat dissipation fins installed in the first direction of the body to face the switching devices with the body interposed therebetween.Type: ApplicationFiled: June 17, 2015Publication date: December 24, 2015Inventor: Seok Hwan LEE
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Publication number: 20150231595Abstract: In a reactor for solid ammonium salt, a method of controlling the reactor, and a NOx emission purification system using solid ammonium salt and selective catalytic reduction, the reactor includes a first chamber and a second chamber. The first chamber has an exhaust and a first heating element. Solid ammonium salt is in the first chamber. The second chamber has a second heating element and is formed at a side of the first chamber. The first chamber is connected with the second chamber. Solid ammonium salt is in the second chamber. An amount of the solid ammonium salt in the second chamber is more than that in the first chamber, so that the first chamber is heated and cooled faster than the second chamber.Type: ApplicationFiled: December 12, 2013Publication date: August 20, 2015Inventors: Hong-Suk Kim, Gyu-Baek Cho, Yong-Jin Kim, Jun-Ho Lee, Young-Il Jeong, Seok-Hwan Lee, Cheol-Woong Park, Chang-Ki Kim, Sun-Youp Lee, Jang-Hee Lee, Seung-Mook Oh, Kern-Yong Kang