Patents by Inventor Ung Hwan Pi

Ung Hwan Pi 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: 11176982
    Abstract: A semiconductor device includes a storage layer including at least one first magnetic layer and a reference layer facing the storage layer and including at least one second magnetic layer. The device also includes a tunnel barrier layer between the storage layer and the reference layer. The device further includes at least one spin-orbit torque line adjacent the storage layer.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: November 16, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae Hoon Kim, Hee Ju Shin, Ung Hwan Pi
  • Patent number: 11170832
    Abstract: A magnetic memory device includes a first conductive line extending in a first direction on a substrate, a first magnetic pattern on the first conductive line, the first magnetic pattern including a first portion and a second portion that have different thicknesses, and a second conductive line on the first magnetic pattern and extending in a second direction intersecting the first direction.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: November 9, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ki Woong Kim, Juhyun Kim, Se Chung Oh, Ung Hwan Pi
  • Publication number: 20210305497
    Abstract: In one embodiment, the magnetic memory device includes a free layer structure having a variable magnetization direction. The free layer structure includes a first free layer, the first free layer being a first Heusler alloy; a coupling layer on the first free layer, the coupling layer including a metal oxide layer; and a second free layer on the metal oxide layer, the second free layer being a second Heusler alloy, the second Heusler alloy being different from the first Heusler alloy.
    Type: Application
    Filed: June 10, 2021
    Publication date: September 30, 2021
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Kwang Seok KIM, Young Man JANG, Ung Hwan PI
  • Patent number: 11121309
    Abstract: A magnetic memory device may include a perpendicular magnetic structure, an in-plane magnetic structure, a free magnetic pattern between the perpendicular magnetic structure and the in-plane magnetic structure, and a tunnel barrier pattern between the perpendicular magnetic structure and the free magnetic pattern. The perpendicular magnetic structure may include at least one pinned pattern which has a perpendicular magnetization direction that is pinned to a specific direction, and the free magnetic pattern may have a switchable perpendicular magnetization direction. The in-plane magnetic structure may include a first magnetic pattern and a second magnetic pattern, and each of the first and second magnetic patterns may have a different respective in-plane magnetization direction.
    Type: Grant
    Filed: June 15, 2020
    Date of Patent: September 14, 2021
    Inventors: Sung Chul Lee, Kwang Seok Kim, Jangeun Lee, Ung Hwan Pi
  • Publication number: 20210264957
    Abstract: A magnetic property measuring system includes coil structures configured to apply a magnetic field to a sample, a light source configured to irradiate incident light to the sample, and a detector configured to detect polarization of light reflected from the sample. The magnetic field is perpendicular to a surface of the sample. Each coil structure includes a pole piece and a coil surrounding an outer circumferential surface of the pole piece. A wavelength of the incident light is equal to or less than about 580 nm.
    Type: Application
    Filed: May 11, 2021
    Publication date: August 26, 2021
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Eunsun NOH, Juhyun KIM, Ung Hwan PI
  • Patent number: 11088319
    Abstract: In one embodiment, the magnetic memory device includes a free layer structure having a variable magnetization direction. The free layer structure includes a first free layer, the first free layer being a first Heusler alloy; a coupling layer on the first free layer, the coupling layer including a metal oxide layer; and a second free layer on the metal oxide layer, the second free layer being a second Heusler alloy, the second Heusler alloy being different from the first Heusler alloy.
    Type: Grant
    Filed: November 15, 2019
    Date of Patent: August 10, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kwang Seok Kim, Young Man Jang, Ung Hwan Pi
  • Patent number: 11004900
    Abstract: An MRAM device includes a first conductive pattern including a material generating a spin orbital torque, a torque transfer pattern contacting a portion of an upper surface of the first conductive pattern, an insulation pattern on a side of the torque transfer pattern and covering the first conductive pattern, and a magnetic tunnel junction (MTJ) structure on the torque transfer pattern, the MTJ structure including a free layer pattern, a tunnel barrier pattern, and a fixed layer pattern sequentially stacked.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: May 11, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hee-Ju Shin, Ung-Hwan Pi
  • Publication number: 20210104661
    Abstract: A magnetic memory device may include a perpendicular magnetic structure, an in-plane magnetic structure, a free magnetic pattern between the perpendicular magnetic structure and the in-plane magnetic structure, and a tunnel barrier pattern between the perpendicular magnetic structure and the free magnetic pattern. The perpendicular magnetic structure may include at least one pinned pattern which has a perpendicular magnetization direction that is pinned to a specific direction, and the free magnetic pattern may have a switchable perpendicular magnetization direction. The in-plane magnetic structure may include a first magnetic pattern and a second magnetic pattern, and each of the first and second magnetic patterns may have a different respective in-plane magnetization direction.
    Type: Application
    Filed: June 15, 2020
    Publication date: April 8, 2021
    Inventors: Sung Chul Lee, Kwang Seok Kim, Jangeun Lee, Ung Hwan Pi
  • Publication number: 20210098686
    Abstract: A magnetic memory device includes a conductive line extending in a first direction, a magnetic line extending in a second direction intersecting the first direction on the conductive line, the magnetic line intersecting the conductive line, and a magnetic pattern disposed between the conductive line and the magnetic line. The magnetic pattern has first sidewalls opposite to each other in the first direction, and second sidewalls opposite to each other in the second direction. The second sidewalls of the magnetic pattern are aligned with sidewalls of the conductive line, respectively.
    Type: Application
    Filed: June 5, 2020
    Publication date: April 1, 2021
    Inventors: Ung Hwan Pi, Dongkyu Lee
  • Publication number: 20210050383
    Abstract: A magnetic memory device includes a first cell array structure including first and second free magnetic patterns which extend in a first direction parallel to a top surface of a substrate and are spaced apart from each other in a second direction intersecting the first direction, and a second cell array structure including a third free magnetic pattern between the first and second free magnetic patterns and a fourth free magnetic pattern spaced apart from the third free magnetic pattern with the second free magnetic pattern therebetween. The first cell array structure further includes a first transistor region including first transistors connected to the first and second free magnetic patterns. The second cell array structure further includes a second transistor region including second transistors connected to the third and fourth free magnetic patterns. The second transistor region is spaced apart from the first transistor region in the first direction.
    Type: Application
    Filed: May 27, 2020
    Publication date: February 18, 2021
    Inventors: Ung Hwan Pi, Sung Chul Lee, Jangeun Lee
  • Publication number: 20210050044
    Abstract: A magnetic memory device includes a first magnetic layer extending in a first direction, a second magnetic layer that extends on and parallel to the first magnetic layer, and a conductive layer extending between the first magnetic layer and the second magnetic layer. The first magnetic layer includes a first region having magnetic moments oriented in a first rotational direction along the first direction. The second magnetic layer includes a second region having magnetic moments oriented in a second rotational direction along the first direction. The second rotational direction is different from the first rotational direction.
    Type: Application
    Filed: March 24, 2020
    Publication date: February 18, 2021
    Inventors: Sung Chul Lee, Ung Hwan Pi
  • Publication number: 20210043681
    Abstract: Disclosed is a magnetic memory device including a first magnetic pattern that extends in a first direction and has a magnetization direction fixed in one direction, and a plurality of second magnetic patterns that extend across the first magnetic pattern. The second magnetic patterns extend in a second direction intersecting the first direction and are spaced apart from each other in the first direction. Each of the second magnetic patterns includes a plurality of magnetic domains that are spaced apart from each other in the second direction.
    Type: Application
    Filed: June 10, 2020
    Publication date: February 11, 2021
    Inventors: Ung Hwan Pi, Dongkyu Lee
  • Patent number: 10910552
    Abstract: A magnetic memory device, a method for manufacturing a magnetic memory device, and a substrate treating apparatus, the device including a substrate including a first memory region and a second memory region; a first magnetic tunnel junction pattern on the first memory region, the first magnetic tunnel junction pattern including a first free pattern and a first oxide pattern on the first free pattern; and a second magnetic tunnel junction pattern on the second memory region, the second magnetic tunnel junction pattern including a second free pattern and a second oxide pattern on the second free pattern, wherein a ratio of a thickness of the first oxide pattern to a thickness of the first free pattern is different from a ratio of a thickness of the second oxide pattern to a thickness of the second free pattern.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: February 2, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Joonmyoung Lee, Yong Sung Park, Jeong-Heon Park, Hyun Cho, Ung Hwan Pi
  • Publication number: 20210028228
    Abstract: A magnetic memory device includes a conductive line extending in a first direction, a bottom electrode provided on a portion of a bottom surface of the conductive line, a free layer and a pinned layer stacked on the conductive line, a spacer layer between the free layer and the pinned layer, and a top electrode provided on a portion of a top surface of the pinned layer. The conductive line, the free layer, the pinned layer and the spacer layer have side surfaces perpendicular to the first direction, and the side surfaces are aligned with each other.
    Type: Application
    Filed: February 19, 2020
    Publication date: January 28, 2021
    Inventors: Sung Chul Lee, Eunsun Noh, Jeong-Heon Park, Ung Hwan Pi
  • Publication number: 20210027822
    Abstract: A semiconductor device includes a storage layer including at least one first magnetic layer and a reference layer facing the storage layer and including at least one second magnetic layer. The device also includes a tunnel barrier layer between the storage layer and the reference layer. The device further includes at least one spin-orbit torque line adjacent the storage layer.
    Type: Application
    Filed: September 30, 2020
    Publication date: January 28, 2021
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae Hoon KIM, Hee Ju Shin, Ung Hwan Pi
  • Patent number: 10862025
    Abstract: A magnetic memory device includes a first magnetic tunnel junction pattern on a substrate, a second magnetic tunnel junction pattern on the first magnetic tunnel junction pattern, and a conductive line between the first magnetic tunnel junction pattern and the second magnetic tunnel junction pattern. The conductive line is configured such that a current flowing through the conductive line flows in parallel to an interface between the conductive line and each of the first and second magnetic tunnel junction patterns.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: December 8, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Joonmyoung Lee, Ung Hwan Pi, Eunsun Noh, Yong Sung Park
  • Patent number: 10825497
    Abstract: A semiconductor device includes a storage layer including at least one first magnetic layer and a reference layer facing the storage layer and including at least one second magnetic layer. The device also includes a tunnel barrier layer between the storage layer and the reference layer. The device further includes at least one spin-orbit torque line adjacent the storage layer.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: November 3, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae Hoon Kim, Hee Ju Shin, Ung Hwan Pi
  • Publication number: 20200251527
    Abstract: An MRAM device includes a first conductive pattern including a material generating a spin orbital torque, a torque transfer pattern contacting a portion of an upper surface of the first conductive pattern, an insulation pattern on a side of the torque transfer pattern and covering the first conductive pattern, and a magnetic tunnel junction (MTJ) structure on the torque transfer pattern, the MTJ structure including a free layer pattern, a tunnel barrier pattern, and a fixed layer pattern sequentially stacked.
    Type: Application
    Filed: July 16, 2019
    Publication date: August 6, 2020
    Inventors: Hee-Ju Shin, Ung-Hwan PI
  • Publication number: 20200251650
    Abstract: In one embodiment, the magnetic memory device includes a free layer structure having a variable magnetization direction. The free layer structure includes a first free layer, the first free layer being a first Heusler alloy; a coupling layer on the first free layer, the coupling layer including a metal oxide layer; and a second free layer on the metal oxide layer, the second free layer being a second Heusler alloy, the second Heusler alloy being different from the first Heusler alloy.
    Type: Application
    Filed: November 15, 2019
    Publication date: August 6, 2020
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Kwang Seok KIM, Young Man Jang, Ung Hwan PI
  • Publication number: 20200152700
    Abstract: A magnetic memory device includes a first magnetic tunnel junction pattern on a substrate, a second magnetic tunnel junction pattern on the first magnetic tunnel junction pattern, and a conductive line between the first magnetic tunnel junction pattern and the second magnetic tunnel junction pattern. The conductive line is configured such that a current flowing through the conductive line flows in parallel to an interface between the conductive line and each of the first and second magnetic tunnel junction patterns.
    Type: Application
    Filed: June 7, 2019
    Publication date: May 14, 2020
    Inventors: Joonmyoung LEE, Ung Hwan PI, Eunsun NOH, Yong Sung PARK