Patents by Inventor Joo-Yul Lee
Joo-Yul 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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Patent number: 11656545Abstract: The present invention relates to a roll stamp and a method of manufacturing the same, the roll stamp including a cylindrical metal mold including a debossed pattern formed on an outer side and a hollow portion formed on an inner side, and a dummy roller inserted into the hollow portion. Because a joining portion is not formed on the entire area of the cylindrical metal mold, a problem in which edge regions are separated does not occur. Also, due to the absence of the joining portion, it is possible to perform a patterning process continuously.Type: GrantFiled: November 15, 2018Date of Patent: May 23, 2023Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALSInventors: Man Kim, Joo Yul Lee, Sang Yeoul Lee, Ju Yeong Lee
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Publication number: 20220389606Abstract: Provided are a measurement method, an electrochemical measuring cell, and a measuring device which are capable of directly and continuously measuring the concentration of monovalent copper ions (Cu+), 3-mercaptopropyl sulfonate (MPS), or Cu+-MPS, which is a plating additive breakdown product, in a plating solution during a copper plating process.Type: ApplicationFiled: September 25, 2020Publication date: December 8, 2022Applicant: Korea Institute Of Materials ScienceInventors: Seung-hoe CHOE, Myeongjin HAN, Man KIM, Bung-uk YOO, Kyun-hwan LEE, Joo-yul LEE, Younghwon KWAN
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Patent number: 11291123Abstract: The present invention relates to a circuit board including: a base board having a circuit region and a terminal region; a circuit pattern formed on an upper portion of the base board; and a low-melting-metal layer formed on an upper portion of the circuit pattern. A circuit board capable of reducing manufacturing time and manufacturing costs may be manufactured by omitting a photoresist process.Type: GrantFiled: January 9, 2017Date of Patent: March 29, 2022Assignees: SAMWON ACT CO., LTD., EMOT CO., LTD., KOREA INSTITUTE OF MATERIALS SCIENCEInventors: Kyung Yul Lee, Kyung Wook Lee, Jun Sang Jeong, Yang Seok Lee, Man Kim, Joo Yul Lee, Sang Yeoul Lee
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Publication number: 20200355998Abstract: The present invention relates to a roll stamp and a method of manufacturing the same, the roll stamp including a cylindrical metal mold including a debossed pattern formed on an outer side and a hollow portion formed on an inner side, and a dummy roller inserted into the hollow portion. Because a joining portion is not formed on the entire area of the cylindrical metal mold, a problem in which edge regions are separated does not occur. Also, due to the absence of the joining portion, it is possible to perform a patterning process continuously.Type: ApplicationFiled: November 15, 2018Publication date: November 12, 2020Inventors: Man KIM, Joo Yul LEE, Sang Yeoul LEE, Ju Yeong LEE
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Patent number: 10276873Abstract: Provided are a current collector for a battery, including: a base material; adhesive layers positioned on the base material; and metal mesh layers positioned on the adhesive layers, in which the metal mesh layer includes a plurality of metal mesh patterns, and holes positioned between the metal mesh patterns, and a method of manufacturing the same. An active material is applied onto the metal mesh layer through the holes of the metal mesh layer, and thus a contact area of the metal mesh layer and the active material is increased, so that it is possible to restrict the active material from being deintercalated from the current collector and improve a cycle lifespan property of a battery.Type: GrantFiled: April 22, 2013Date of Patent: April 30, 2019Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALSInventors: Man Kim, Joo Yul Lee, Sang Yeoul Lee, Yong Soo Jeong, Do Yon Chang, Kyu Hwan Lee, Cheol Nam Yang, Chang Rae Lee, Seong Bong Yim, Dong Chan Lim, Jae Hong Lim, Young Sup Song, Sung Mo Moon, Su Sub Cha
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Publication number: 20190029124Abstract: The present invention relates to a circuit board including: a base board having a circuit region and a terminal region; a circuit pattern formed on an upper portion of the base board; and a low-melting-metal layer formed on an upper portion of the circuit pattern. A circuit board capable of reducing manufacturing time and manufacturing costs may be manufactured by omitting a photoresist process.Type: ApplicationFiled: January 9, 2017Publication date: January 24, 2019Applicants: Samwon Act Co., Ltd, Emot Co., Ltd., Korea Institute of Machinery & MaterialsInventors: Kyung Yul LEE, Kyung Wook LEE, Jun Sang JEONG, Yang Seok LEE, Man KIM, Joo Yul LEE, Sang Yeoul LEE
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Publication number: 20180199400Abstract: The present invention relates to a planar heating sheet, including a linear heating member including a single fiber body and a plurality of heating wires surrounding the single fiber body, wherein the heating wire includes a metal wire, an organic compound layer applied on the metal wire, and a metal oxide layer applied on the organic compound layer. Since the planar heating sheet is realized by a plurality of linear heating members each formed by coating a single fiber body with heating wires, each including a metal nanowire, an organic compound layer applied on the metal nanowire, and a metal oxide layer applied on the organic compound layer, this planar heating sheet can be naturally folded or bent like a general woven fabric, and thus can be used in a wide range.Type: ApplicationFiled: June 9, 2017Publication date: July 12, 2018Applicant: Korea Institute of Machinery & MaterialsInventors: Dong Chan LIM, Ki Hyon HONG, Min Kyung KIM, Jae Hong LIM, Jae Hoon JEONG, Sung Mook CHOI, Joo Yul LEE
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Publication number: 20150125756Abstract: Provided are a current collector for a battery, including: a base material; adhesive layers positioned on the base material; and metal mesh layers positioned on the adhesive layers, in which the metal mesh layer includes a plurality of metal mesh patterns, and holes positioned between the metal mesh patterns, and a method of manufacturing the same. An active material is applied onto the metal mesh layer through the holes of the metal mesh layer, and thus a contact area of the metal mesh layer and the active material is increased, so that it is possible to restrict the active material from being deintercalated from the current collector and improve a cycle lifespan property of a battery.Type: ApplicationFiled: April 22, 2013Publication date: May 7, 2015Applicant: KOREA INSTITUTE OF MACHINERY & MATERIALSInventors: Man Kim, Joo Yul Lee, Sang Yeoul Lee, Yong Soo Jeong, Do Yon Chang, Kyu Hwan Lee, Cheol Nam Yang, Chang Rae Lee, Seong Bong Yim, Dong Chan Lim, Jae Hong Lim, Young Sup Song, Sung Mo Moon, Su Sub Cha
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Publication number: 20120291275Abstract: Provided is a method of forming a metal interconnection line on a flexible substrate, wherein the method includes: coating a hard mask layer on at least one surface of the flexible substrate, followed by performing photolithography thereon to form a predetermined hard mask pattern; etching a portion of the flexible substrate by using the hard mask pattern as a mask to form a trench; plasma treating the inside of the trench by using a treatment gas for pre-treating the flexible substrate; coating a seed layer inside the trench; removing the hard mask pattern; and filling the inside of the trench coated with the seed layer with metal. A metal interconnection line formed by using the method may have a strong adhesion force with respect to the flexible substrate.Type: ApplicationFiled: December 27, 2011Publication date: November 22, 2012Applicant: KOREA INSTITUTE OF MACHINERY & MATERIALSInventors: Jong-Joo RHA, Kee-Seok NAM, Jung-Dae KWON, Kyu-Hwan LEE, Jong-Soo BAE, Joo-Yul LEE, Jong-Soo KO
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Patent number: 8314753Abstract: A plasma display device having a first diode with an anode coupled to an electrode. A first switch is coupled between a cathode of the first diode and a first voltage source that supplies a first voltage. A first inductor and a second switch are coupled in series between a power recovery capacitor and the cathode of the first diode, and a third switch is coupled between the anode of the first diode and a second voltage source that supplies a second voltage lower than the first voltage.Type: GrantFiled: November 18, 2009Date of Patent: November 20, 2012Assignee: Samsung SDI Co., Ltd.Inventor: Joo-Yul Lee
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Patent number: 8111211Abstract: A plasma display includes a plurality of first electrodes divided into at least two groups. In the plasma display, first group cells corresponding to first electrodes of the first group are initialized, and light emitting cells are selected from the first group cells to be sustain-discharged. In addition, second group cells corresponding to the first electrodes of the second group are initialized, and light emitting cells are selected from the second group cells to be sustain-discharged.Type: GrantFiled: January 31, 2008Date of Patent: February 7, 2012Assignee: Samsung SDI Co., Ltd.Inventor: Joo-Yul Lee
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Publication number: 20120024714Abstract: Provided is hard trivalent chromium plating solution having improved covering power. The trivalent chromium plating solution comprises a trivalent chromium compound comprising a compound of formula (1) below; wherein Cr2(SO4)n(OH)6-2n (n<3) ??(1).Type: ApplicationFiled: July 22, 2011Publication date: February 2, 2012Inventors: Sik-Choi Kwon, Man Kim, Joo-Yul Lee, Sang-Yeoul Lee, Dae-Gun Kang, F.I. Danilov, V.S. Protsenko, V.O. Gordiienko, A.B. Velichenko
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Patent number: 8106855Abstract: A driving apparatus of a plasma display panel (PDP) operates stably and reliably. The driving apparatus to drive the PDP includes a pulse application unit which applies a pulse to the PDP; and an energy recovery unit which comprises an inductor which generates LC resonance with a panel capacitor element of the PDP, an energy recovery determiner which determines the accumulation of energy during the LC resonance or emission of the accumulated energy to the PDP, and an energy storage unit which stores the accumulated energy, wherein the energy recovery determiner comprises a first falling switching device which determines the accumulation of the energy; and a second falling switching device which is connected between the first falling switching device and the energy storage unit, in order for the second falling switching device to form a current path toward the energy storage unit.Type: GrantFiled: February 27, 2007Date of Patent: January 31, 2012Assignee: Samsung SDI Co., Ltd.Inventors: Hak-Ki Choi, Nam-Sung Jung, Jun-Weon Song, Joo-Yul Lee, Myoung-Kyu Lee
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Patent number: 8044890Abstract: A method for driving a plasma display device including first electrodes and second electrodes. In one embodiment, the plurality of first electrodes are divided into a plurality of groups including first and second groups. During a first period of a sustain period, a second voltage is applied to the first and second groups of the first electrodes while a first voltage is applied to the second electrodes, the second voltage being higher than the first voltage. During a second period of the sustain period, while the second voltage is applied to the second electrodes, the first voltage is applied to the first group of the first electrodes, and the first voltage is applied to the second group of the first electrodes a period of time after when the first voltage is initially applied to the first group of the first electrodes.Type: GrantFiled: November 14, 2007Date of Patent: October 25, 2011Assignee: Samsung SDI Co., Ltd.Inventor: Joo-Yul Lee
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Patent number: 7852295Abstract: A plasma display device including a first electrode, a second electrode, and a third electrode crossing the first electrode and the second electrode is disclosed. A plurality of first sustain pulses are applied to the first electrode and a plurality of second sustain pulses are applied to the second electrode during a sustain period of a first subfield. A voltage at the first electrode gradually decreases from a third voltage to a fourth voltage after the voltage at the first electrode gradually increases from a first voltage to a second voltage, during a sub-reset period of a second subfield being consecutive to the first subfield. The plurality of second sustain pulses includes a first group and a second group, the second group includes the last one of the second sustain pulses, and a second sustain pulse of the second group has a different characteristic (e.g., pulse width) from a second sustain pulse of the first group.Type: GrantFiled: November 15, 2006Date of Patent: December 14, 2010Assignee: Samsung SDI, Co., Ltd.Inventors: Joo-Yul Lee, Tae-Hyun Kim
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Patent number: 7839358Abstract: A plasma display panel sustain-discharge circuit. First and second signal lines for supplying first and second voltages and at least one inductor coupled between one end of the panel capacitor and a third voltage are formed. Energy is stored in the inductor through a path formed between the third voltage and the first signal line in a state where a voltage of one end of the panel capacitor is substantially fixed to the first voltage. The voltage of one end of the panel capacitor substantially decreases to the second voltage using resonance current generated between the inductor and the panel capacitor and the stored energy. Energy is stored in the inductor through a path formed between the third voltage and the second line in a state where a voltage of one end of the panel capacitor is substantially fixed to the second voltage.Type: GrantFiled: November 30, 2006Date of Patent: November 23, 2010Assignee: Samsung SDI Co., Ltd.Inventors: Joo-Yul Lee, Kyoung-Ho Kang, Hee-Hwan Kim
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Patent number: 7830338Abstract: A driving circuit and method for driving a plasma display cell array using the circuit is disclosed. The driving circuit comprises a first transistor configured to drive the cells, a first driving sub-circuit configured to turn the first transistor on, and a second driving sub-circuit configured to turn the first transistor off when the voltage driven to the cells reaches a selected value.Type: GrantFiled: April 2, 2007Date of Patent: November 9, 2010Assignee: Samsung SDI Co., Ltd.Inventor: Joo-Yul Lee
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Patent number: 7755574Abstract: In a plasma display device, a second terminal of a first transistor, whose first terminal is connected to an electrode, is connected to a power source for supplying a first voltage. A first driver is adapted to drive the first transistor to change the voltage of the electrode, and a second driver adapted to sustain the voltage of the electrode substantially at a second voltage differing from the first voltage by intercepting a path between the first transistor and the power source when the voltage of the electrode is changed into the second voltage in a first period, and to change the voltage of the electrode substantially back to the first voltage in a second period. In this way, it is possible to supply two or more voltages having a different voltage level by one power source.Type: GrantFiled: January 22, 2008Date of Patent: July 13, 2010Assignee: Samsung SDI Co., Ltd.Inventor: Joo-Yul Lee
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Publication number: 20100141157Abstract: A plasma display device having a first diode with an anode coupled to an electrode. A first switch is coupled between a cathode of the first diode and a first voltage source that supplies a first voltage. A first inductor and a second switch are coupled in series between a power recovery capacitor and the cathode of the first diode, and a third switch is coupled between the anode of the first diode and a second voltage source that supplies a second voltage lower than the first voltage.Type: ApplicationFiled: November 18, 2009Publication date: June 10, 2010Inventor: Joo-Yul Lee
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Patent number: 7652639Abstract: An operation of reducing a voltage at a scan electrode by as much as a predetermined voltage and floating the scan electrode is repeatedly performed in a reset period of a plasma display panel. When the voltage at the scan electrode is reduced and a discharge is generated, a discharge extinction is generated when the scan electrode is floated, and the voltage at the scan electrode increases. At this time, the voltage increase of the scan electrode is applied and the voltage at the scan electrode is greatly reduced when the voltage at the scan electrode is subsequently reduced.Type: GrantFiled: April 8, 2005Date of Patent: January 26, 2010Assignee: Samsung SDI Co., Ltd.Inventor: Joo-Yul Lee