Patents by Inventor Hyoung-Kyu Kim
Hyoung-Kyu 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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Patent number: 11975991Abstract: A neutralization/water separation device for an esterified product including: a neutralization tank in which a crude product mixture containing alcohol and an ester compound, a neutralizing agent, and water are put to produce a neutralized mixture; a water separation tank disposed below the neutralization tank to divide the neutralization mixture into a floating layer and an aqueous layer; a partition wall extending downward from a ceiling of the water separation tank to provide a lower passage in the water separation tank; and a transfer line that transfers the neutralized mixture from the neutralization tank to the water separation tank, where the water separation tank includes: a first water separation part into which the neutralized mixture is introduced from the neutralization tank through the transfer line; and a second water separation part into which the neutralized mixture is introduced from the first water separation part through the lower passage, where the first water separation part and the seconType: GrantFiled: July 1, 2020Date of Patent: May 7, 2024Assignee: LG Chem, Ltd.Inventors: Yeon Uk Choo, Sung Kyu Lee, Hyun Kyu Kim, Chan Hyu Jin, Hyoung Jun, Jin Sung Park
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Publication number: 20240145019Abstract: A power source switching circuit for a memory device includes: a first power source voltage terminal for supplying a first power source voltage, a second power source voltage terminal for supplying a second power source voltage, a first metal-oxide-semiconductor field-effect transistor (MOSFET) and a second MOSFET connected in series with the first power source voltage terminal, a first level shifter connected to the first MOSFET and supplied with the first power source voltage, a second level shifter connected to the second MOSFET and supplied with the second power source voltage, a third MOSFET connected to the second MOSFET, and a third level shifter connected to the third MOSFET and supplied with a third power source voltage, and a memory cell of a non-volatile memory is programmed using the first power source voltage or the second power source voltage.Type: ApplicationFiled: June 7, 2023Publication date: May 2, 2024Applicant: Magnachip Semiconductor, Ltd.Inventors: Hyoung Kyu KIM, Il Jun KIM, Kwon Young OH, Sang Ho LEE
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Publication number: 20240014589Abstract: Disclosed is an elastic electric contact terminal that does not give an effect on a metal layer even when a core is pressed by external force. The elastic electric contact terminal includes an elastic core, a heat-resistant polymer film that surrounds the core and is attached to top and bottom surfaces of the core with an adhesive layer therebetween, and a metal layer disposed on an outer surface of the polymer film. At least one sidewall of the core is pressed inward to form a folded portion, and a space is defined between an inner surface of the polymer film and the sidewall of the core by the folded portion.Type: ApplicationFiled: July 11, 2023Publication date: January 11, 2024Inventors: Sun-Ki Kim, Byung-Joo Park, Jin-San Kim, Hyoung-Kyu Kim
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Publication number: 20230420157Abstract: Disclosed is an elastic electric contact terminal capable of implementing various electrical pathways. The electric contact terminal includes: an elastic core; a polymer film surrounding the core in a width direction thereof; and a conductive laminate in which a metal foil is laminated on an outer surface of the polymer film. The polymer film is bonded to top and bottom surfaces of the core with an adhesive layer therebetween, and one end of the conductive laminate extends lengthily to the outside of the core to form a terminal part.Type: ApplicationFiled: June 23, 2023Publication date: December 28, 2023Inventors: Sun-Ki Kim, Gang-Yeol Lee, Byung-Joo Park, Hyoung-Kyu Kim
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Publication number: 20230299526Abstract: Disclosed is an electrical contact terminal having elasticity, which is fitted into a through-hole defined on a substrate so as to electrically connect a conductive pattern defined on the substrate to an object. A core of the electrical contact terminal includes a body part having a first width with a uniform dimension in a longitudinal direction, an insertion part having a second width with a dimension less than that of the first width and extending vertically downward from the body part, and a contact part protruding in the form of a wing from each of both sides of an end of the insertion part in a width direction, wherein the body part, the insertion part, and the contact part are provided as a single body.Type: ApplicationFiled: March 14, 2023Publication date: September 21, 2023Inventors: Sun-Ki Kim, Byung-Joo Park, Hyoung-Kyu Kim, Jin-San Kim
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Patent number: 11747850Abstract: A current generating circuit includes a current generator configured to supply a reference current, switches connected to the current generator, wherein one switch of the switches is selected and configured to operate, according to a switch selection signal, and one or more resistors, respectively connected to the switches, wherein a rate of current change according to a temperature change of the current generator is adjusted based on a temperature coefficient of resistance (TCR) of resistors connected to the one switch, according to adjustment of the one switch.Type: GrantFiled: April 12, 2021Date of Patent: September 5, 2023Assignee: MagnaChip Semiconductor, Ltd.Inventors: Jin Seop Noh, Hyoung Kyu Kim
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Patent number: 11480984Abstract: A low dropout voltage regulator includes a differential amplifier configured to output an amplified voltage by comparing a feedback voltage with a reference voltage, a pass transistor configured to receive a power input voltage into a source terminal, the amplified voltage into a gate terminal, and output an output voltage into a drain terminal, distribution resistors connected between the drain terminal and the ground terminal, configured to generate the feedback voltage, and an inrush preventer, connected in parallel between the differential amplifier and the pass transistor, and configured to output a regulated amplified voltage into the gate terminal according to a control signal, wherein the inrush preventer comprises a determiner configured to output an enable signal that is turned on during an initial driving period, and a limiter configured to output the regulated amplified voltage according to the enable signal.Type: GrantFiled: April 22, 2020Date of Patent: October 25, 2022Assignee: MagnaChip Semiconductor, Ltd.Inventors: Ju Sang Park, Hyung Sun Kim, Hyoung Kyu Kim
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Patent number: 11322066Abstract: A panel control circuit configured to control a display panel includes a plurality of pixels. The panel control circuit includes a controller configured to output an image data and a source driver, including an output circuit and an output control circuit, configured to generate data signals based on the image data. The controller is configured to output an output change signal for changing an output of the source driver. The output circuit is configured to output the data signals to the display panel, and the output control circuit is configured to output an adjusting current to the output circuit in a signal transition section of the output change signal.Type: GrantFiled: December 28, 2020Date of Patent: May 3, 2022Assignee: MagnaChip Semiconductor, Ltd.Inventors: Hyoung Kyu Kim, Yeon Kyoung Park, Dae Young Yoo
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Publication number: 20220004215Abstract: A current generating circuit includes a current generator configured to supply a reference current, switches connected to the current generator, wherein one switch of the switches is selected and configured to operate, according to a switch selection signal, and one or more resistors, respectively connected to the switches, wherein a rate of current change according to a temperature change of the current generator is adjusted based on a temperature coefficient of resistance (TCR) of resistors connected to the one switch, according to adjustment of the one switch.Type: ApplicationFiled: April 12, 2021Publication date: January 6, 2022Applicant: MagnaChip Semiconductor, Ltd.Inventors: Jin Seop NOH, Hyoung Kyu KIM
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Publication number: 20210358370Abstract: A panel control circuit configured to control a display panel includes a plurality of pixels. The panel control circuit includes a controller configured to output an image data and a source driver, including an output circuit and an output control circuit, configured to generate data signals based on the image data. The controller is configured to output an output change signal for changing an output of the source driver. The output circuit is configured to output the data signals to the display panel, and the output control circuit is configured to output an adjusting current to the output circuit in a signal transition section of the output change signal.Type: ApplicationFiled: December 28, 2020Publication date: November 18, 2021Applicant: Magnachip Semiconductor, Ltd.Inventors: Hyoung Kyu KIM, Yeon Kyoung PARK, Dae Young YOO
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Patent number: 11170730Abstract: A driving device of a flat panel display configured to receive an image signal and a clock signal includes a driving circuit configured to convert the image signal into pixel data and output the pixel data, a timing controller configured to generate and output a vertical synchronization signal, a horizontal synchronization signal, a source change enable signal, and a display enable signal using the image signal and the clock signal, an output buffer including an input terminal configured to receive the pixel data and an output terminal connected to the flat panel display, and a buffer controller connected to the timing controller and the output buffer and configured to control a bias current, applied to the output buffer, to be decreased by a value during a period.Type: GrantFiled: June 7, 2019Date of Patent: November 9, 2021Assignee: MagnaChip Semiconductor, Ltd.Inventors: Hyoung Kyu Kim, Yeon Kyoung Park, Dae Young Yoo
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Patent number: 11030941Abstract: A display driving device for driving a display panel includes a first driving circuit configured to output a first image signal, a second driving circuit configured to output a second image signal, a first switch circuit connected to the first driving circuit, and configured to transmit the first image signal to a part of a first set of sub-pixels arranged in the display panel based on a first switching signal during a first horizontal time interval, and a second switch circuit connected to the second driving circuit, and configured to transmit the second image signal to a part of a second set of sub-pixels arranged in the display panel adjacent to the first set of sub-pixels based on a second switching signal during the first horizontal time interval, wherein a width of the first switching signal and a width of the second switching signal in the first horizontal time differ from each other.Type: GrantFiled: August 1, 2019Date of Patent: June 8, 2021Assignee: MagnaChip Semiconductor, LtdInventors: Yeon Kyoung Park, Hyoung Kyu Kim, Dae Young Yoo
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Publication number: 20210166791Abstract: An apparatus for constructing a library for deriving a material composition using empirical result, which enables acceleration of research on the material-properties relationship. By applying the empirical results of the material composition, missing data of the material compositions can be statistically calculated by using supervised non-linear imputation techniques. The completed composition information of the materials is passed as an input of machine learning material-properties relationship prediction.Type: ApplicationFiled: December 18, 2019Publication date: June 3, 2021Inventors: Seung Bum HONG, Eun Ae CHO, Jong Min YUK, Hye Ryung BYON, Yong Soo YANG, Pyuck Pa CHOI, Jong Hwa SHIN, Hyuck Mo LEE, CHI HAO LIOW, Seong Woo CHO, Gun PARK, Yong Ju LEE, Yoon Su SHIM, Moo Ny NA, Ho Sun JUN, Ki Hoon BANG, Myung Joon KIM, Chae Hwa JEONG, Seung Gu KIM, Chung Ik OH, Hong Jun KIM, Jae Gyu KIM, Ji Min OH, Ji Won YEOM, Seong Mun EOM, Hyoung Kyu KIM, Young Joon HAN, Dae Hee LEE, Ho Jun LEE, Jae Woon KIM, Jae Wook SHIN, Hyeon Muk KANG, Jae Yeol PARK, Han Beom JEONG, Jae Sang LEE, Joon Ha CHANG, Yo Han KIM, Su Jung KIM, Hyun Jeong OH, Arthur Baucour, Jae Wook HAN, Kyu Seon JANG, Hye Sung JO, Bo Ryung YOO, Hyeon Jin PARK, Min Gwan CHO, Jun Hyung PARK, Yea Eun KIM, Seok Hwan MIN, Jung Woo CHOI, Young Tae PARK, Doo Sun HONG
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Patent number: 10927101Abstract: The present invention relates to novel pyridine nucleoside compounds, Neopetroside A (NPS A) and Neopetroside B (NPS B) obtained by fractionating an extract of Neopetrosia sp. which is a marine sponge, with ethanol, into n-butanol (n-BuOH). When the NPS A was treated with myocardial cells, it activates oxidative phosphorylation, basal and mitochondrial respiration induced by ATP and ATP synthesis, and stimulates the glycolysis activity and when the NPS A was treated with an ischemic reperfusion injury model, the left ventricular pressure injured by ischemic reperfusion was recovered and the size of myocardial injury site was significantly reduced and as a result, can be provided as the pharmaceutical composition for preventing or treating ischemic heart disease or the health functional food for preventing or improving the same.Type: GrantFiled: May 30, 2017Date of Patent: February 23, 2021Assignee: INJE UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATIONInventors: Jin Han, Seung Hun Jeong, In-Sung Song, Hyoung Kyu Kim, Nari Kim, Larisa K. Shubina, Tatyana N. Makarieva, Valentin A. Stonik, Dmitry V. Yashunsky, Nikolay E. Nifantiev
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Publication number: 20210026385Abstract: A low dropout voltage regulator includes a differential amplifier configured to output an amplified voltage by comparing a feedback voltage with a reference voltage, a pass transistor configured to receive a power input voltage into a source terminal, the amplified voltage into a gate terminal, and output an output voltage into a drain terminal, distribution resistors connected between the drain terminal and the ground terminal, configured to generate the feedback voltage, and an inrush preventer, connected in parallel between the differential amplifier and the pass transistor, and configured to output a regulated amplified voltage into the gate terminal according to a control signal, wherein the inrush preventer comprises a determiner configured to output an enable signal that is turned on during an initial driving period, and a limiter configured to output the regulated amplified voltage according to the enable signal.Type: ApplicationFiled: April 22, 2020Publication date: January 28, 2021Applicant: MagnaChip Semiconductor, Ltd.Inventors: Ju Sang PARK, Hyung Sun KIM, Hyoung Kyu KIM
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Patent number: 10891914Abstract: A control buffer in a source driver includes a first CMOS inverter configured to output a switch signal to control turning on and off of a switch, and a first tri-state inverter that is connected to the first CMOS inverter and configured to selectively adjust a size of the control buffer, wherein a slew rate of the switch signal is adjusted depending on the size of the control buffer.Type: GrantFiled: June 3, 2019Date of Patent: January 12, 2021Assignee: MagnaChip Semiconductor, Ltd.Inventors: Eun Kyu Seong, Hyoung Kyu Kim
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Patent number: 10614749Abstract: A source driver apparatus for a display panel includes source drivers and a slew rate controller. Each of the source drivers includes a data latch, a decoder, and an output buffer. The data latch is configured to hold sub-pixel data. The decoder is configured to decode the sub-pixel data held in the data latch to provide a driving signal. The output buffer has an adjustable slew rate and is configured to buffer the driving signal to provide a buffered driving signal. The slew rate controller is configured to analyze the sub-pixel data in the data latch in each of the source drivers and dynamically control the slew rate of the output buffer in each of the source drivers.Type: GrantFiled: February 8, 2018Date of Patent: April 7, 2020Assignee: MagnaChip Semiconductor, Ltd.Inventors: Hyoung Kyu Kim, Won Seok Lee, Jin Seok Yang, Dae Young Yoo
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Publication number: 20200051493Abstract: A display driving device for driving a display panel includes a first driving circuit configured to output a first image signal, a second driving circuit configured to output a second image signal, a first switch circuit connected to the first driving circuit, and configured to transmit the first image signal to a part of a first set of sub-pixels arranged in the display panel based on a first switching signal during a first horizontal time interval, and a second switch circuit connected to the second driving circuit, and configured to transmit the second image signal to a part of a second set of sub-pixels arranged in the display panel adjacent to the first set of sub-pixels based on a second switching signal during the first horizontal time interval, wherein a width of the first switching signal and a width of the second switching signal in the first horizontal time differ from each other.Type: ApplicationFiled: August 1, 2019Publication date: February 13, 2020Applicant: Magnachip Semiconductor, Ltd.Inventors: Yeon Kyoung PARK, Hyoung Kyu KIM, Dae Young YOO
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Publication number: 20200035193Abstract: A control buffer in a source driver includes a first CMOS inverter configured to output a switch signal to control turning on and off of a switch, and a first tri-state inverter that is connected to the first CMOS inverter and configured to selectively adjust a size of the control buffer, wherein a slew rate of the switch signal is adjusted depending on the size of the control buffer.Type: ApplicationFiled: June 3, 2019Publication date: January 30, 2020Applicant: Magnachip Semiconductor, Ltd.Inventors: Eun Kyu SEONG, Hyoung Kyu KIM
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Publication number: 20200035188Abstract: A driving device of a flat panel display configured to receive an image signal and a clock signal includes a driving circuit configured to convert the image signal into pixel data and output the pixel data, a timing controller configured to generate and output a vertical synchronization signal, a horizontal synchronization signal, a source change enable signal, and a display enable signal using the image signal and the clock signal, an output buffer including an input terminal configured to receive the pixel data and an output terminal connected to the flat panel display, and a buffer controller connected to the timing controller and the output buffer and configured to control a bias current, applied to the output buffer, to be decreased by a value during a period.Type: ApplicationFiled: June 7, 2019Publication date: January 30, 2020Applicant: Magnachip Semiconductor, Ltd.Inventors: Hyoung Kyu KIM, Yeon Kyoung PARK, Dae Young YOO