Patents by Inventor Seol Choi

Seol Choi 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: 10714685
    Abstract: Forming a semiconductor device that includes a memory cell array may include performing a switching firing operation on one or more memory cells of the memory array to cause a threshold voltage distribution associated with threshold switching devices in the memory cells to be reduced. The switching device firing operation may be performed such that the threshold voltage distribution is reduced while maintaining the one or more threshold switching devices in the amorphous state. Performing the switching device firing operation on a threshold switching device may include heating the threshold switching device, applying a voltage to the threshold switching device, applying a current to the threshold switching device, some combination thereof, or the like.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: July 14, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Min Kyu Yang, Seong Geon Park, Dong Jun Seong, Dong Ho Ahn, Jung Moo Lee, Seol Choi, Hideki Horii
  • Patent number: 10546894
    Abstract: A memory device includes a plurality of word lines extending along a first direction and spaced apart from each other along a second direction that is perpendicular to the first direction; a plurality of bit lines extending along the second direction and spaced apart from each other in the first direction, the plurality of bit lines being spaced apart from the plurality of word lines in a third direction that is perpendicular to both the first and second directions; and a plurality of memory cells being respectively arranged between the corresponding word and bit lines. Each of the memory cells includes a selection device layer, and a variable resistance layer, wherein the selection device layer includes a chalcogenide switching material having a composition according to a particular chemical formula.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: January 28, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Zhe Wu, Dong-ho Ahn, Hideki Horii, Soon-oh Park, Jeong-hee Park, Jin-woo Lee, Dong-jun Seong, Seol Choi
  • Publication number: 20190355905
    Abstract: Forming a semiconductor device that includes a memory cell array may include performing a switching firing operation on one or more memory cells of the memory array to cause a threshold voltage distribution associated with threshold switching devices in the memory cells to be reduced. The switching device firing operation may be performed such that the threshold voltage distribution is reduced while maintaining the one or more threshold switching devices in the amorphous state. Performing the switching device firing operation on a threshold switching device may include heating the threshold switching device, applying a voltage to the threshold switching device, applying a current to the threshold switching device, some combination thereof, or the like.
    Type: Application
    Filed: August 1, 2019
    Publication date: November 21, 2019
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Min Kyu YANG, Seong Geon PARK, Dong Jun SEONG, Dong Ho AHN, Jung Moo LEE, Seol CHOI, Hideki HORN
  • Patent number: 10403818
    Abstract: Forming a semiconductor device that includes a memory cell array may include performing a switching firing operation on one or more memory cells of the memory array to cause a threshold voltage distribution associated with threshold switching devices in the memory cells to be reduced. The switching device firing operation may be performed such that the threshold voltage distribution is reduced while maintaining the one or more threshold switching devices in the amorphous state. Performing the switching device firing operation on a threshold switching device may include heating the threshold switching device, applying a voltage to the threshold switching device, applying a current to the threshold switching device, some combination thereof, or the like.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: September 3, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Min Kyu Yang, Seong Geon Park, Dong Jun Seong, Dong Ho Ahn, Jung Moo Lee, Seol Choi, Hideki Horii
  • Publication number: 20190148456
    Abstract: A memory device includes a plurality of word lines extending along a first direction and spaced apart from each other along a second direction that is perpendicular to the first direction; a plurality of bit lines extending along the second direction and spaced apart from each other in the first direction, the plurality of bit lines being spaced apart from the plurality of word lines in a third direction that is perpendicular to both the first and second directions; and a plurality of memory cells being respectively arranged between the corresponding word and bit lines. Each of the memory cells includes a selection device layer, and a variable resistance layer, wherein the selection device layer includes a chalcogenide switching material having a composition according to a particular chemical formula.
    Type: Application
    Filed: December 20, 2018
    Publication date: May 16, 2019
    Inventors: Zhe Wu, Dong-ho Ahn, Hideki Horii, Soon-oh Park, Jeong-hee Park, Jin-woo Lee, Dong-jun Seong, Seol Choi
  • Patent number: 10252718
    Abstract: A method for controlling operation of a hydraulic idle stop and go (ISG) system using an electro hydraulic power steering (EHPS) system includes measuring a pressure in an accumulator, a steering angle, and a steering angular velocity; determining whether the measured pressure in the accumulator is less than an absolute value of a first reference pressure; determining whether the measured steering angle is less than an absolute value of a reference angle when the measured pressure in the accumulator is less than the absolute value of the first reference pressure; determining whether the measured steering angular velocity is less than an absolute value of a reference angular velocity when the measured steering angle is less than the absolute value of the reference angle; and opening a solenoid valve when the measured steering angular velocity is less than the absolute value of the reference angular velocity.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: April 9, 2019
    Assignee: HYUNDAI MOTOR COMPANY
    Inventor: Young-Seol Choi
  • Patent number: 10224371
    Abstract: A memory device includes a variable resistance layer and a selection device layer electrically connected to the variable resistance layer. The memory device further included a chalcogenide switching material that reduces leakage current and has, for example, a composition according to chemical formula 1 below, [GeXSiY(AsaTe1-a)Z](1-U)[N]U??(1) (where 0.05?X?0.1, 0.15?Y?0.25, 0.7?Z?0.8, X+Y+Z=1, 0.45?a?0.6, and 0.08?U?0.2).
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: March 5, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Zhe Wu, Dong-ho Ahn, Hideki Horii, Soon-oh Park, Jeong-hee Park, Jin-woo Lee, Dong-jun Seong, Seol Choi
  • Patent number: 10186552
    Abstract: A variable resistance memory device may include: a first electrode layer; a selection device layer on the first electrode layer, the selection device layer including a chalcogenide switching material consisting essentially of germanium (Ge), selenium (Se), and antimony (Sb), wherein a content of the Ge is less than a content of the Se based on an atomic weight; a second electrode layer on the selection device layer; a variable resistance layer on the second electrode layer, the variable resistance layer including a chalcogenide material; and a third electrode layer on the variable resistance layer.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: January 22, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seol Choi, Hideki Horii, Dong-ho Ahn, Seong-geon Park, Dong-jun Seong, Min-kyu Yang, Jung-moo Lee
  • Publication number: 20180040818
    Abstract: Forming a semiconductor device that includes a memory cell array may include performing a switching firing operation on one or more memory cells of the memory array to cause a threshold voltage distribution associated with threshold switching devices in the memory cells to be reduced. The switching device firing operation may be performed such that the threshold voltage distribution is reduced while maintaining the one or more threshold switching devices in the amorphous state. Performing the switching device firing operation on a threshold switching device may include heating the threshold switching device, applying a voltage to the threshold switching device, applying a current to the threshold switching device, some combination thereof, or the like.
    Type: Application
    Filed: January 9, 2017
    Publication date: February 8, 2018
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Min Kyu YANG, Seong Geon PARK, Dong Jun SEONG, Dong Ho AHN, Jung Moo LEE, Seol CHOI, Hideki HORII
  • Publication number: 20180033826
    Abstract: A variable resistance memory device may include: a first electrode layer; a selection device layer on the first electrode layer, the selection device layer including a chalcogenide switching material consisting essentially of germanium (Ge), selenium (Se), and antimony (Sb), wherein a content of the Ge is less than a content of the Se based on an atomic weight; a second electrode layer on the selection device layer; a variable resistance layer on the second electrode layer, the variable resistance layer including a chalcogenide material; and a third electrode layer on the variable resistance layer.
    Type: Application
    Filed: March 1, 2017
    Publication date: February 1, 2018
    Inventors: Seol Choi, Hideki Horii, Dong-ho Ahn, Seong-geon Park, Dong-jun Seong, Min-kyu Yang, Jung-moo Lee
  • Publication number: 20180026077
    Abstract: A memory device includes a variable resistance layer and a selection device layer electrically connected to the variable resistance layer. The memory device further included a chalcogenide switching material that reduces leakage current and has, for example, a composition according to chemical formula 1 below, [GeXSiY(AsaTe1-a)Z](1-U)[N]U??(1) (where 0.05?X?0.1, 0.15?Y?0.25, 0.7?Z?0.8, X+Y+Z=1, 0.45?a?0.6, and 0.08?U?0.2).
    Type: Application
    Filed: February 1, 2017
    Publication date: January 25, 2018
    Inventors: Zhe Wu, Dong-ho Ahn, Hideki Horii, Soon-oh Park, Jeong-hee Park, Jin-woo Lee, Dong-jun Seong, Seol Choi
  • Publication number: 20170106868
    Abstract: A method for controlling operation of a hydraulic idle stop and go (ISG) system using an electro hydraulic power steering (EHPS) system includes measuring a pressure in an accumulator, a steering angle, and a steering angular velocity; determining whether the measured pressure in the accumulator is less than an absolute value of a first reference pressure; determining whether the measured steering angle is less than an absolute value of a reference angle when the measured pressure in the accumulator is less than the absolute value of the first reference pressure; determining whether the measured steering angular velocity is less than an absolute value of a reference angular velocity when the measured steering angle is less than the absolute value of the reference angle; and opening a solenoid valve when the measured steering angular velocity is less than the absolute value of the reference angular velocity.
    Type: Application
    Filed: September 12, 2016
    Publication date: April 20, 2017
    Inventor: Young-Seol CHOI
  • Patent number: 9381937
    Abstract: An electro-hydraulic power steering apparatus for an environment-friendly vehicle and a method of controlling the same is provided. In particular, a gear box assists in a steering force of a steering wheel, and a reservoir tank stores hydraulic oil therein. An electro-hydraulic power pump pumps the hydraulic oil via an electric motor to supply the hydraulic oil to the gear box. A first valve is mounted to a hydraulic line through which the hydraulic oil flows from the electro-hydraulic power pump to the gear box, and a second valve is mounted to a hydraulic line through which the hydraulic oil returns from the gear box to the reservoir tank.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: July 5, 2016
    Assignee: Hyundai Motor Company
    Inventor: Young Seol Choi
  • Publication number: 20150041239
    Abstract: An electro-hydraulic power steering apparatus for an environment-friendly vehicle and a method of controlling the same is provided. In particular, a gear box assists in a steering force of a steering wheel, and a reservoir tank stores hydraulic oil therein. An electro-hydraulic power pump pumps the hydraulic oil via an electric motor to supply the hydraulic oil to the gear box. A first valve is mounted to a hydraulic line through which the hydraulic oil flows from the electro-hydraulic power pump to the gear box, and a second valve is mounted to a hydraulic line through which the hydraulic oil returns from the gear box to the reservoir tank.
    Type: Application
    Filed: December 31, 2013
    Publication date: February 12, 2015
    Applicant: HYUNDAI MOTOR COMPANY
    Inventor: Young Seol Choi
  • Publication number: 20100260712
    Abstract: The present invention provides a use of a human antibody against a hepatitis B virus (HBV) surface antigen (HBsAg). The antibody exhibits an excellent HBV neutralizing ability, and thus, is useful for the prevention or treatment of the HBV infection or a disease caused thereby.
    Type: Application
    Filed: November 21, 2008
    Publication date: October 14, 2010
    Applicant: GREEN CROSS CORPORATION
    Inventors: Se-Ho Kim, Kwang-Won Hong, Yong-Nam Shin, Yong-Won Shin, Ki-Hwan Chang, Kyung-Hwan Ryoo, Jin-Seol Choi, Pan-Kyung Kim, Ki-Tae Bong, Dong-Hyuck Seo, Sun-Jeong Oh