Patents by Inventor Sung Woong Chung

Sung Woong Chung 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).

  • Patent number: 11770980
    Abstract: An electronic device may include a semiconductor memory, and the semiconductor memory may include a multilayer synthetic anti-ferromagnetic (Multi SAF) structure including a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer interposed between the first ferromagnetic layer and the second ferromagnetic layer, wherein the spacer layer may include n non-magnetic layers and n?1 magnetic layers that are disposed such that each of the n non-magnetic layers and each of the n?1 magnetic layers are alternately stacked, wherein n indicates an odd number equal to or greater than 3, wherein the n?1 magnetic layers and n non-magnetic layers may be configured to effectuate an antiferromagnetic exchange coupling with at least one of the first ferromagnetic layer and the second ferromagnetic layer.
    Type: Grant
    Filed: August 12, 2020
    Date of Patent: September 26, 2023
    Assignee: SK HYNIX INC.
    Inventors: Tae Young Lee, Guk Cheon Kim, Soo Gil Kim, Min Seok Moon, Jong Koo Lim, Sung Woong Chung
  • Publication number: 20210184101
    Abstract: An electronic device may include a semiconductor memory, and the semiconductor memory may include a multilayer synthetic anti-ferromagnetic (Multi SAF) structure including a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer interposed between the first ferromagnetic layer and the second ferromagnetic layer, wherein the spacer layer may include n non-magnetic layers and n?1 magnetic layers that are disposed such that each of the n non-magnetic layers and each of the n?1 magnetic layers are alternately stacked, wherein n indicates an odd number equal to or greater than 3, wherein the n?1 magnetic layers and n non-magnetic layers may be configured to effectuate an antiferromagnetic exchange coupling with at least one of the first ferromagnetic layer and the second ferromagnetic layer.
    Type: Application
    Filed: August 12, 2020
    Publication date: June 17, 2021
    Inventors: Tae Young Lee, Guk Cheon Kim, Soo Gil Kim, Min Seok Moon, Jong Koo Lim, Sung Woong Chung
  • Patent number: 10580969
    Abstract: An electronic device may include a semiconductor memory, and the semiconductor memory may include a first magnetic layer; a second magnetic layer; and a spacer layer interposed between the first magnetic layer and the second magnetic layer, wherein the spacer layer includes a first layer, a second layer and an intermediate layer interposed between the first layer and the second layer, and wherein each of the first layer and the second layer includes an oxide, or a nitride, or a combination of an oxide and a nitride, the intermediate layer includes a multilayer structure including [Ru/x]n or [x/Ru]n, x includes a metal, an oxide, or a nitride, or a combination of a metal, an oxide and a nitride, and n represents an integer of 1 or greater.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: March 3, 2020
    Assignees: SK hynix Inc., Toshiba Memory Corporation
    Inventors: Tae-Young Lee, Jae-Hyoung Lee, Sung-Woong Chung, Eiji Kitagawa
  • Patent number: 10403345
    Abstract: An electronic device including a semiconductor memory. The semiconductor memory includes a bit line; a source line; a plurality of resistive memory cells among which a selected memory cell forms a current path between the bit line and the source line; a read current supply unit configured to supply read current to the bit line in a read operation; a sense amplifier configured to generate read data in response to a voltage level of the bit line in the read operation; and a variable switch element configured to flow current from the source line to a ground terminal in the read operation, and be decreased in its resistance value as a voltage level of the source line is high.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: September 3, 2019
    Assignee: SK hynix Inc.
    Inventors: Jae-Yun Yi, Sung-Woong Chung, Seok-Pyo Song
  • Publication number: 20190173001
    Abstract: An electronic device may include a semiconductor memory, and the semiconductor memory may include a first magnetic layer; a second magnetic layer; and a spacer layer interposed between the first magnetic layer and the second magnetic layer, wherein the spacer layer includes a first layer, a second layer and an intermediate layer interposed between the first layer and the second layer, and wherein each of the first layer and the second layer includes an oxide, or a nitride, or a combination of an oxide and a nitride, the intermediate layer includes a multilayer structure including [Ru/x]n or [x/Ru]n, x includes a metal, an oxide, or a nitride, or a combination of a metal, an oxide and a nitride, and n represents an integer of 1 or greater.
    Type: Application
    Filed: December 4, 2018
    Publication date: June 6, 2019
    Inventors: Tae-Young LEE, Jae-Hyoung LEE, Sung-Woong CHUNG, Eiji KITAGAWA
  • Publication number: 20180277745
    Abstract: According to one embodiment, a magnetic memory device includes a magnetoresistive element, the magnetoresistive element including a first magnetic layer having a variable magnetization direction, a second magnetic layer having a fixed magnetization direction and a nonmagnetic layer provided between the first magnetic layer and the second magnetic layer. The first magnetic layer includes first and second sub-magnetic layers each containing at least iron (Fe) and boron (B), and a concentration of boron (B) contained in the first sub-magnetic layer is different from a concentration of boron (B) contained in the second sub-magnetic layer.
    Type: Application
    Filed: September 12, 2017
    Publication date: September 27, 2018
    Applicants: TOSHIBA MEMORY CORPORATION, SK HYNIX INC.
    Inventors: Tadaaki OIKAWA, Toshihiko NAGASE, Youngmin EEH, Daisuke WATANABE, Kazuya SAWADA, Kenichi YOSHINO, Hiroyuki OHTORI, Yang Kon KIM, Ku Youl JUNG, Jong Koo LIM, Jae Hyoung LEE, Soo Man SEO, Sung Woong CHUNG, Tae Young LEE
  • Publication number: 20180166114
    Abstract: An electronic device including a semiconductor memory. The semiconductor memory includes a bit line; a source line; a plurality of resistive memory cells among which a selected memory cell forms a current path between the bit line and the source line; a read current supply unit configured to supply read current to the bit line in a read operation; a sense amplifier configured to generate read data in response to a voltage level of the bit line in the read operation; and a variable switch element configured to flow current from the source line to a ground terminal in the read operation, and be decreased in its resistance value as a voltage level of the source line is high.
    Type: Application
    Filed: February 12, 2018
    Publication date: June 14, 2018
    Inventors: Jae-Yun Yi, Sung-Woong Chung, Seok-Pyo Song
  • Patent number: 9923026
    Abstract: Provided an electronic device including a semiconductor memory. The semiconductor memory may include: a selecting element; a variable resistance element electrically coupled to the selecting element through a first conductive plug; a first line electrically coupled to the variable resistance element through a second conductive plug; a second line electrically coupled to the selecting element through a third conductive plug; and one or more barrier layers arranged to form one or more electrical connections with the variable resistance element or the selecting element or the both and operated as an insulator or conductor according to a resistance state of the variable resistance element during a read operation.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: March 20, 2018
    Assignee: SK hynix Inc.
    Inventors: Yu-Jin Kim, Sung-Woong Chung
  • Patent number: 9892774
    Abstract: An electronic device including a semiconductor memory. The semiconductor memory includes a bit line; a source line; a plurality of resistive memory cells among which a selected memory cell forms a current path between the bit line and the source line; a read current supply unit configured to supply read current to the bit line in a read operation; a sense amplifier configured to generate read data in response to a voltage level of the bit line in the read operation; and a variable switch element configured to flow current from the source line to a ground terminal in the read operation, and be decreased in its resistance value as a voltage level of the source line is high.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: February 13, 2018
    Assignee: SK hynix Inc.
    Inventors: Jae-Yun Yi, Sung-Woong Chung, Seok-Pyo Song
  • Patent number: 9570511
    Abstract: Electronic devices having semiconductor elements and methods for fabricating such devices including, a method for fabricating an electronic device including a semiconductor memory, which includes: forming a sacrificial layer on a substrate including a first region and a second region; selectively etching the sacrificial layer and the substrate of the first region to form a trench; forming a first gate that fills a part of the trench in the first region; forming a gate protection layer on the first gate to fill the remaining part of the trench; removing the sacrificial layer of the first region to form a grooved portion surrounded by the gate protection layer; forming a conductive plug to cover the grooved portion; removing the sacrificial layer of the second region; and forming a second gate on the substrate of the second region.
    Type: Grant
    Filed: April 30, 2016
    Date of Patent: February 14, 2017
    Assignee: SK hynix Inc.
    Inventors: Seok-Pyo Song, Sung-Woong Chung, Jong-Han Shin
  • Patent number: 9520187
    Abstract: This patent document relates to memory circuits or devices and their applications in electronic devices or systems. The disclosed technology in this patent document includes memory circuits or devices and their applications in electronic devices or systems and various implementations of an electronic device in which an electronic device capable of reducing an area, improving device characteristics due to a reduction in the resistance of a switching transistor, simplifying the process, and reducing a cost is provided. In accordance with the electronic device of this patent document, an area can be reduced, device characteristics can be improved due to a reduction in the resistance of the switching transistor, the process can be simplified, and a cost can be reduced.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: December 13, 2016
    Assignee: SK hynix Inc.
    Inventors: Jae-Yun Yi, Sung-Woong Chung, Seok-Pyo Song
  • Publication number: 20160351241
    Abstract: An electronic device including a semiconductor memory. The semiconductor memory includes a bit line; a source line; a plurality of resistive memory cells among which a selected memory cell forms a current path between the bit line and the source line; a read current supply unit configured to supply read current to the bit line in a read operation; a sense amplifier configured to generate read data in response to a voltage level of the bit line in the read operation; and a variable switch element configured to flow current from the source line to a ground terminal in the read operation, and be decreased in its resistance value as a voltage level of the source line is high.
    Type: Application
    Filed: August 8, 2016
    Publication date: December 1, 2016
    Inventors: Jae-Yun Yi, Sung-Woong Chung, Seok-Pyo Song
  • Publication number: 20160308114
    Abstract: Provided an electronic device including a semiconductor memory. The semiconductor memory may include: a selecting element; a variable resistance element electrically coupled to the selecting element through a first conductive plug; a first line electrically coupled to the variable resistance element through a second conductive plug; a second line electrically coupled to the selecting element through a third conductive plug; and one or more barrier layers arranged to form one or more electrical connections with the variable resistance element or the selecting element or the both and operated as an insulator or conductor according to a resistance state of the variable resistance element during a read operation.
    Type: Application
    Filed: September 24, 2015
    Publication date: October 20, 2016
    Inventors: Yu-Jin Kim, Sung-Woong Chung
  • Publication number: 20160247856
    Abstract: Electronic devices having semiconductor elements and methods for fabricating such devices including, a method for fabricating an electronic device including a semiconductor memory, which includes: forming a sacrificial layer on a substrate including a first region and a second region; selectively etching the sacrificial layer and the substrate of the first region to form a trench; forming a first gate that fills a part of the trench in the first region; forming a gate protection layer on the first gate to fill the remaining part of the trench; removing the sacrificial layer of the first region to form a grooved portion surrounded by the gate protection layer; forming a conductive plug to cover the grooved portion; removing the sacrificial layer of the second region; and forming a second gate on the substrate of the second region.
    Type: Application
    Filed: April 30, 2016
    Publication date: August 25, 2016
    Inventors: Seok-Pyo Song, Sung-Woong Chung, Jong-Han Shin
  • Patent number: 9412444
    Abstract: An electronic device including a semiconductor memory. The semiconductor memory includes a bit line; a source line; a plurality of resistive memory cells among which a selected memory cell forms a current path between the bit line and the source line; a read current supply unit configured to supply read current to the bit line in a read operation; a sense amplifier configured to generate read data in response to a voltage level of the bit line in the read operation; and a variable switch element configured to flow current from the source line to a ground terminal in the read operation, and be decreased in its resistance value as a voltage level of the source line is high.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: August 9, 2016
    Assignee: SK hynix Inc.
    Inventors: Jae-Yun Yi, Sung-Woong Chung, Seok-Pyo Song
  • Patent number: 9406380
    Abstract: Provided is an electronic device including a semiconductor memory unit. The semiconductor memory unit may include: a storage cell comprising a variable resistance element; a first selecting element coupled to one end of the storage cell and having a threshold voltage set to a first voltage; and a second selecting element coupled to the other end of the storage cell and having a threshold voltage set to a second voltage higher than the first voltage.
    Type: Grant
    Filed: July 28, 2014
    Date of Patent: August 2, 2016
    Assignee: SK hynix Inc.
    Inventors: Jae-Yun Yi, Sung-Woong Chung, Seok-Pyo Song
  • Patent number: 9331267
    Abstract: Electronic devices having semiconductor elements and methods for fabricating such devices including, a method for fabricating an electronic device including a semiconductor memory, which includes: forming a sacrificial layer on a substrate including a first region and a second region; selectively etching the sacrificial layer and the substrate of the first region to form a trench; forming a first gate that fills a part of the trench in the first region; forming a gate protection layer on the first gate to fill the remaining part of the trench; removing the sacrificial layer of the first region to form a grooved portion surrounded by the gate protection layer; forming a conductive plug to cover the grooved portion; removing the sacrificial layer of the second region; and forming a second gate on the substrate of the second region.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: May 3, 2016
    Assignee: SK hynix Inc.
    Inventors: Seok-Pyo Song, Sung-Woong Chung, Jong-Han Shin
  • Publication number: 20160019956
    Abstract: This patent document relates to memory circuits or devices and their applications in electronic devices or systems. The disclosed technology in this patent document includes memory circuits or devices and their applications in electronic devices or systems and various implementations of an electronic device in which an electronic device capable of reducing an area, improving device characteristics due to a reduction in the resistance of a switching transistor, simplifying the process, and reducing a cost is provided. In accordance with the electronic device of this patent document, an area can be reduced, device characteristics can be improved due to a reduction in the resistance of the switching transistor, the process can be simplified, and a cost can be reduced.
    Type: Application
    Filed: September 28, 2015
    Publication date: January 21, 2016
    Inventors: Jae-Yun Yi, Sung-Woong Chung, Seok-Pyo Song
  • Patent number: 9147442
    Abstract: This patent document relates to memory circuits or devices and their applications in electronic devices or systems. The disclosed technology in this patent document includes memory circuits or devices and their applications in electronic devices or systems and various implementations of an electronic device in which an electronic device capable of reducing an area, improving device characteristics due to a reduction in the resistance of a switching transistor, simplifying the process, and reducing a cost is provided. In accordance with the electronic device of this patent document, an area can be reduced, device characteristics can be improved due to a reduction in the resistance of the switching transistor, the process can be simplified, and a cost can be reduced.
    Type: Grant
    Filed: March 21, 2014
    Date of Patent: September 29, 2015
    Assignee: SK hynix Inc.
    Inventors: Jae-Yun Yi, Sung-Woong Chung, Seok-Pyo Song
  • Publication number: 20150248932
    Abstract: Provided is an electronic device including a semiconductor memory unit. The semiconductor memory unit may include: a storage cell comprising a variable resistance element; a first selecting element coupled to one end of the storage cell and having a threshold voltage set to a first voltage; and a second selecting element coupled to the other end of the storage cell and having a threshold voltage set to a second voltage higher than the first voltage.
    Type: Application
    Filed: July 28, 2014
    Publication date: September 3, 2015
    Inventors: Jae-Yun Yi, Sung-Woong Chung, Seok-Pyo Song