Patents by Inventor Myeong-Han Kim
Myeong-Han 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: 10610926Abstract: Disclosed is a continuous rapid solidification apparatus, which includes a cooling roll configured to cool a molten metal supplied to an outer circumference surface thereof; a crucible configured to supply the cooling roll with the molten metal; and two or more molten metal supplies configured to melt raw material metal and alternately supply the crucible with the molten metal.Type: GrantFiled: October 19, 2015Date of Patent: April 7, 2020Assignee: ILJIN ELECTRIC CO., LTD.Inventors: Young Pil Choi, Cheol Ho Park, Min Hyun Kim, Myeong Han Kim
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Patent number: 10589350Abstract: Disclosed is a continuous rapid solidification apparatus, which has a cooling roll configured to cool a molten metal supplied to an outer circumference surface thereof; a crucible configured to supply the cooling roll with the molten metal; a molten metal supply configured to melt a raw material metal and supply the crucible with the molten metal; a first chamber configured to form a sealed space where the molten metal supplied from the crucible is cooled by the cooling roll; and a second chamber configured to be formed of a space separated from the first chamber and to form a sealed space where the molten metal is supplied to the crucible by the molten metal supply.Type: GrantFiled: October 19, 2015Date of Patent: March 17, 2020Assignee: ILJIN ELECTRIC CO., LTD.Inventors: Young Pil Choi, Cheol Ho Park, Min Hyun Kim, Myeong Han Kim
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Patent number: 10566616Abstract: Disclosed is a negative active material having a reduced volume change during charge/discharge. A fine crystalline region exists on a matrix of an alloy, and lithium is easily dispersed due to the fine crystalline region. In the negative active material, a ratio of the fine crystalline region is represented by an amorphization degree, and is optimized in designing a battery through a measurement of an expansion rate after 50 cycles. The negative active material is used for a secondary battery and includes an alloy formed by a chemical formula below: (a ratio of Ti to Fe is 1:1 and a ratio of Si:Ti or Si:Fe has a range of 5:1 to 9:1.) Si—?xTiyFezAlu where x, y, z, and u are at %, x: 1?(y+z+u), y: 0.09 to 0.14, z: 0.09 to 0.14, and u: larger than 0.01 and less than 0.2.Type: GrantFiled: December 1, 2015Date of Patent: February 18, 2020Assignee: ILJIN ELECTRIC CO., LTD.Inventors: Young Pil Choi, Cheol Ho Park, Min Hyun Kim, Myeong Han Kim, Seon Kyong Kim
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Patent number: 10297856Abstract: The present disclosure is to provide a negative electrode for a lithium secondary battery having high negative electrode efficiency and excellent capacity retention, and a lithium secondary battery including the negative electrode. In one aspect, there is provided a negative electrode for a lithium secondary battery, wherein the electrode contains 3 to 9% by weight of a silicon-based negative-electrode active material having a following composition formula (1); and 87.5 to 95.5% by weight of a graphite-based negative-electrode active material: SixTiyFezAlu??(1) where x, y, z and u are atomic %, x: 1?(y+z+u), y: 0.09 to 0.14, z: 0.09 to 0.14, u: 0.01 exclusive to 0.2 exclusive.Type: GrantFiled: February 26, 2016Date of Patent: May 21, 2019Assignee: ILJIN ELECTRIC CO., LTD.Inventors: Young Pil Choi, Cheol Ho Park, Min Hyun Kim, Myeong Han Kim, Seon Kyong Kim
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Publication number: 20180287149Abstract: Disclosed is a negative active material, which has a small change in a volume during charge/discharge, has enhanced initial efficiency and capacity maintenance characteristics. A fine crystalline region exists on a matrix of an alloy, and lithium is more easily dispersed due to the fine crystalline region. The negative active material for a secondary battery has an improved expansion rate, and is formed by a formula below, and its expansion rate after 50 cycles is 70 to 150%, and an amorphization degree on a matrix within an alloy has a range of 25% or more, and Si has a range of 60 to 70%, Ti has a range of 9 to 14%, Fe has a range of 9 to 14%, and Al has a range larger than 1% and less than 20%.Type: ApplicationFiled: November 18, 2015Publication date: October 4, 2018Applicant: ILJIN ELECTRIC CO., LTD.Inventors: Young Pil Choi, Cheol Ho Park, Min Hyun Kim, Myeong Han Kim, Seon Kyong Kim
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Publication number: 20170352911Abstract: The present disclosure is to provide a negative electrode for a lithium secondary battery having high negative electrode efficiency and excellent capacity retention, and a lithium secondary battery including the negative electrode. In one aspect, there is provided a negative electrode for a lithium secondary battery, wherein the electrode contains 3 to 9% by weight of a silicon-based negative-electrode active material having a following composition formula (1); and 87.5 to 95.5% by weight of a graphite-based negative-electrode active material: SixTiyFezAlu??(i) where x, y, z and u are atomic %, x: 1?(y+z+u), y: 0.09 to 0.14, z: 0.09 to 0.14, u: 0.01 exclusive to 0.2 exclusive.Type: ApplicationFiled: February 26, 2016Publication date: December 7, 2017Applicant: ILJIN ELECTRIC CO., LTD.Inventors: Young Pil Choi, Cheol Ho Park, Min Hyun Kim, Myeong Han Kim, Seon Kyong Kim
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Publication number: 20170331105Abstract: Disclosed is a negative active material having a reduced volume change during charge/discharge. A fine crystalline region exists on a matrix of an alloy, and lithium is easily dispersed due to the fine crystalline region. In the negative active material, a ratio of the fine crystalline region is represented by an amorphization degree, and is optimized in designing a battery through a measurement of an expansion rate after 50 cycles. The negative active material is used for a secondary battery and includes an alloy formed by a chemical formula below: (a ratio of Ti to Fe is 1:1 and a ratio of Si:Ti or Si:Fe has a range of 5:1 to 9:1.) Si—?xTiyFezAlu where x, y, z, and u are at %, x: 1?(y+z+u), y: 0.09 to 0.14, z: 0.09 to 0.14, and u: larger than 0.01 and less than 0.2.Type: ApplicationFiled: December 1, 2015Publication date: November 16, 2017Applicant: ILJIN ELECTRIC CO., LTD.Inventors: Young Pil Choi, Cheol Ho Park, Min Hyun Kim, Myeong Han Kim, Seon Kyong Kim
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Publication number: 20170320130Abstract: Disclosed is a continuous rapid solidification apparatus, which comprises a cooling roll configured to cool a molten metal supplied to an outer circumference surface thereof; a crucible configured to supply the cooling roll with the molten metal; and two or more molten metal supplies configured to melt raw material metal and sequentially supply the crucible with the molten metal.Type: ApplicationFiled: October 19, 2015Publication date: November 9, 2017Applicant: ILJIN ELECTRIC CO., LTD.Inventors: Young Pil Choi, Cheol Ho Park, Min Hyun Kim, Myeong Han Kim
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Publication number: 20170312814Abstract: Disclosed is a continuous rapid solidification apparatus, which comprises a cooling roll configured to cool a molten metal supplied to an outer circumference surface thereof; a crucible configured to supply the cooling roll with the molten metal; a molten metal supply configured to melt a raw material metal and supply the crucible with the molten metal; a first chamber configured to form a sealed space where the molten metal supplied from the crucible is cooled by the cooling roll; and a second chamber configured to be formed of a space separated from the first chamber and to form a sealed space where the molten metal is supplied to the crucible by the molten metal supply.Type: ApplicationFiled: October 19, 2015Publication date: November 2, 2017Applicant: ILJIN ELECTRIC CO., LTD.Inventors: Young Pil Choi, Cheol Ho Park, Min Hyun Kim, Myeong Han Kim
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Patent number: 9722243Abstract: The present invention provides a negative active material for a secondary battery with an improved expansion rate, which is formed by a formula below, and in which an expansion rate of the negative active material after 50 cycles is 70 to 150%, and an amorphization degree on a matrix within an alloy has a range of 25% or more, and Si has a range of 60 to 70%, Ti has a range of 9 to 14%, Fe has a range of 9 to 14%, and Al has a range larger than 1% and less than 20%. Formula: SixTiyFezAlu (x, y, z, and u are at %, x: 1?(y+z+u)).Type: GrantFiled: November 18, 2015Date of Patent: August 1, 2017Assignee: ILJIN ELECTRIC CO., LTD.Inventors: Cheol-Ho Park, Seon-Kyong Kim, Young-Pil Choi, Min-Hyun Kim, Myeong-Han Kim
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Publication number: 20160149213Abstract: The present invention provides a negative active material for a secondary battery with an improved expansion rate, which is formed by a formula below, and in which an expansion rate of the negative active material after 50 cycles is 70 to 150%, and an amorphization degree on a matrix within an alloy has a range of 25% or more, and Si has a range of 60 to 70%, Ti has a range of 9 to 14%, Fe has a range of 9 to 14%, and Al has a range larger than 1% and less than 20%.Type: ApplicationFiled: November 18, 2015Publication date: May 26, 2016Applicant: ILJIN ELECTRIC CO., LTD.Inventors: Cheol-Ho Park, Seon-Kyong Kim, Young-Pil Choi, Min-Hyun Kim, Myeong-Han Kim
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Patent number: RE49992Abstract: An organic light-emitting diode display is disclosed. In one aspect, the display includes a scan line formed over a substrate, a data line formed over the substrate, and a driving voltage line configured to receive a driving voltage. The data line and driving voltage line cross the scan line and are electrically insulated from the scan line. A switching transistor is electrically connected to the scan line and the data line and includes a switching drain electrode. A driving transistor includes a driving source electrode electrically connected to the switching drain electrode and a driving gate electrode including a first storage electrode. A storage line includes a second storage electrode overlapping the first storage electrode. An OLED is electrically connected to the driving transistor, the second storage electrode including an extension at least partially overlapping the data line.Type: GrantFiled: April 18, 2022Date of Patent: May 28, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Seung-Kyu Lee, Chae Han Hyun, Mi Hae Kim, Myeong Hee Seo, Ki Myeong Eom, Ji-Eun Lee