Patents by Inventor Zihui Wang

Zihui Wang 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: 12284813
    Abstract: The present invention is directed to a nonvolatile memory device including a plurality of first conductive lines extending along a first direction; first and second plurality of second conductive lines extending along a second direction; an array of active regions, each active region having an elongated shape directed along a third direction substantially bisecting an angle formed between the first and second directions and including first and second drains formed at opposite ends thereof; and an array of first memory elements and an array of second memory elements formed at different levels, each first memory element and each second memory element being electrically connected to a respective first drain and a respective second drain, respectively. The first and second plurality of second conductive lines are electrically connected to the array of first memory elements and the array of second memory elements along the second direction, respectively.
    Type: Grant
    Filed: February 6, 2023
    Date of Patent: April 22, 2025
    Assignee: Avalanche Technology, Inc.
    Inventors: Zhiqiang Wei, Zihui Wang, Ebrahim Abedifard, Yiming Huai
  • Patent number: 12278195
    Abstract: A packaged semiconductor device includes one or more semiconductor dies with at least one MRAM die; a package substrate having first and second planar surfaces that are substantially larger than planar surfaces of the semiconductor dies, the first planar surface of the package substrate being disposed adjacent to the semiconductor dies and including a plurality of package bond pads that are electrically connected to the semiconductor dies, the second planar surface of the package substrate including a plurality of solder bumps electrically connected to the package bond pads; and a soft magnetic cap confronting the semiconductor dies and having an edge that extends toward and attaches to the package substrate, thereby encapsulating the semiconductor dies. The package substrate includes first and second outer conductive layers and a soft magnetic layer interposed between and separated from the first and second outer conductive layers by first and second insulating layers.
    Type: Grant
    Filed: December 16, 2023
    Date of Patent: April 15, 2025
    Assignee: Avalanche Technology, Inc.
    Inventors: Zihui Wang, Yiming Huai
  • Publication number: 20250063952
    Abstract: A magnetic memory element including first and second magnetic free layers having a variable magnetization direction substantially perpendicular to layer planes thereof; a first perpendicular enhancement layer (PEL) interposed between the first and second magnetic free layers; first and second magnetic reference layers having a first invariable magnetization direction substantially perpendicular to layer planes thereof; a second PEL interposed between the first and second magnetic reference layers; an insulating tunnel junction layer formed between the first magnetic free layer and reference layer; an anti-ferromagnetic coupling layer formed adjacent to the second magnetic reference layer; a magnetic fixed layer formed adjacent to the anti-ferromagnetic coupling layer and having a second invariable magnetization direction substantially opposite to the first invariable magnetization direction; and a cap layer formed adjacent to the second magnetic free layer and comprising iron, oxygen, and a metal element.
    Type: Application
    Filed: October 26, 2024
    Publication date: February 20, 2025
    Inventors: Zihui Wang, Yiming Huai
  • Patent number: 12133395
    Abstract: The present invention is directed to a perpendicular magnetic structure including a seed layer structure that includes a first seed layer comprising a metal element and oxygen; a second seed layer formed on top of the first seed layer and comprising cobalt, iron, and boron; and a third seed layer formed on top of the second seed layer and comprising chromium. The metal element is one of titanium, tantalum, or magnesium. The perpendicular magnetic structure further includes a magnetic fixed layer structure formed on top of the seed layer structure and having an invariable magnetization direction substantially perpendicular to a layer plane of the magnetic fixed layer structure. The magnetic fixed layer structure includes layers of a magnetic material interleaved with layers of a transition metal. The magnetic material includes cobalt. The transition metal is one of nickel, platinum, palladium, or iridium.
    Type: Grant
    Filed: September 2, 2023
    Date of Patent: October 29, 2024
    Assignee: Avalanche Technology, Inc.
    Inventors: Zihui Wang, Yiming Huai
  • Patent number: 12133471
    Abstract: A magnetic memory element including first and second magnetic free layers having a variable magnetization direction substantially perpendicular to layer planes thereof; a first perpendicular enhancement layer (PEL) interposed between the first and second magnetic free layers; first and second magnetic reference layers having a first invariable magnetization direction substantially perpendicular to layer planes thereof; a second PEL interposed between the first and second magnetic reference layers; an insulating tunnel junction layer formed between the first magnetic free layer and reference layer; an anti-ferromagnetic coupling layer formed adjacent to the second magnetic reference layer; a magnetic fixed layer formed adjacent to the anti-ferromagnetic coupling layer and having a second invariable magnetization direction substantially opposite to the first invariable magnetization direction; a non-magnetic layer comprising oxygen and a transition metal and formed adjacent to the second magnetic free layer; an
    Type: Grant
    Filed: August 26, 2023
    Date of Patent: October 29, 2024
    Assignee: Avalanche Technology, Inc.
    Inventors: Zihui Wang, Yiming Huai
  • Patent number: 12126286
    Abstract: The present invention belongs to the technical field of electric automobiles and particularly relates to a fault tolerance decision-making method and system for sensor failure of a vehicular wheel hub driving system. The method comprises a current sensor failure diagnostic process, a position/velocity sensor failure diagnostic process and a selection process for a wheel hub motor fault tolerance control method. The system comprises a current sensor failure diagnostic module, a position/velocity sensor failure diagnostic module and a selection module for a wheel hub motor fault tolerance control method. The position/velocity sensor failure diagnostic module further comprises a fault tolerance control switching module.
    Type: Grant
    Filed: December 20, 2022
    Date of Patent: October 22, 2024
    Assignee: ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Zihui Wang, Weigong Zhao, Zhiyuan He, Jiongjiong Cai, Zhentao Qian
  • Publication number: 20240288604
    Abstract: The present disclosure provides a circuit and apparatus for generating a signal source for impedance measurement of rock and ore samples, including a smart mobile device; an integrated instrument, where the integrated instrument is connected to the smart mobile device via a wireless network, and a first electrode interface, a second electrode interface, a third electrode interface and a fourth electrode interface are fixedly arranged on the integrated instrument; and a sample rack, where the sample rack includes a first unpolarized electrode, a second unpolarized electrode, a third unpolarized electrode, and a fourth unpolarized electrode, rock and ore samples are placed between the second unpolarized electrode and the third unpolarized electrode, and a first end of the first unpolarized electrode is electrically connected to the first electrode interface by a triaxial cable.
    Type: Application
    Filed: December 27, 2022
    Publication date: August 29, 2024
    Applicant: GIANT SEQUOIA AI TECHNOLOGY (CHANGSHA) LIMITED
    Inventors: Xingsheng CHEN, Rujun CHEN, Xiaojie WANG, Shaoheng CHUN, Shengjie LI, Zihui WANG, Ruijie SHEN, Hongchun YAO, Zhitong LIU, Shenglan HOU, Feifei WANG
  • Publication number: 20240268125
    Abstract: The present invention is directed to a nonvolatile memory device including a plurality of first conductive lines extending along a first direction; first and second plurality of second conductive lines extending along a second direction; an array of active regions, each active region having an elongated shape directed along a third direction substantially bisecting an angle formed between the first and second directions and including first and second drains formed at opposite ends thereof; and an array of first memory elements and an array of second memory elements formed at different levels, each first memory element and each second memory element being electrically connected to a respective first drain and a respective second drain, respectively. The first and second plurality of second conductive lines are electrically connected to the array of first memory elements and the array of second memory elements along the second direction, respectively.
    Type: Application
    Filed: February 6, 2023
    Publication date: August 8, 2024
    Inventors: Zhiqiang Wei, Zihui Wang, Ebrahim Abedifard, Yiming Huai
  • Publication number: 20240219365
    Abstract: The present disclosure provides a system and method for remotely measuring impedance of rock and ore samples, and relates to the field of measurement of impedance of rock and ore samples. The method includes: establishing, by a wireless communication module, wireless network connection between a smart mobile device and a sample impedance tester; performing, by a parameter setting module in the smart mobile device, parameter acquisition setting and sample photographing, and storing acquired parameters and photos photographed for the samples; and sending, by the smart mobile device, a self-check command to the sample impedance tester to obtain self-check information of the sample impedance tester, and sending, by the smart mobile device, measurement configuration information and an acquisition command to an embedded control system.
    Type: Application
    Filed: December 27, 2022
    Publication date: July 4, 2024
    Applicant: GIANT SEQUOIA AI TECHNOLOGY (CHANGSHA) LIMITED
    Inventors: Xiaojie WANG, Rujun CHEN, Xingsheng CHEN, Shaoheng CHUN, Shengjie LI, Zihui WANG, Hongchun YAO, Ruijie SHEN, Zhitong LIU, Shenglan HOU, Feifei WANG
  • Publication number: 20240015986
    Abstract: The present invention is directed to a memory cell including first and second unidirectional selectors coupled in parallel to a nonvolatile memory element. Each of the first and second unidirectional selectors includes first, second, and third electrode layers; a first insulator layer interposed between the first and second electrode layers; and a second insulator layer interposed between the second and third electrode layers. The first insulator layer of the first unidirectional selector includes therein a permanent conductive path and the second insulator layer of the first unidirectional selector is operable to form therein a volatile conductive path upon application of a potential across the first unidirectional selector.
    Type: Application
    Filed: September 26, 2022
    Publication date: January 11, 2024
    Inventors: Zhiqiang Wei, Zihui Wang
  • Publication number: 20230413577
    Abstract: The present invention is directed to a perpendicular magnetic structure including a seed layer structure that includes a first seed layer comprising a metal element and oxygen; a second seed layer formed on top of the first seed layer and comprising cobalt, iron, and boron; and a third seed layer formed on top of the second seed layer and comprising chromium. The metal element is one of titanium, tantalum, or magnesium. The perpendicular magnetic structure further includes a magnetic fixed layer structure formed on top of the seed layer structure and having an invariable magnetization direction substantially perpendicular to a layer plane of the magnetic fixed layer structure. The magnetic fixed layer structure includes layers of a magnetic material interleaved with layers of a transition metal. The magnetic material includes cobalt. The transition metal is one of nickel, platinum, palladium, or iridium.
    Type: Application
    Filed: September 2, 2023
    Publication date: December 21, 2023
    Inventors: Zihui Wang, Yiming Huai
  • Patent number: 11848039
    Abstract: The present invention is directed to a magnetic memory cell including a magnetic tunnel junction (MTJ) memory element and a two-terminal bidirectional selector coupled in series between two conductive lines. The MTJ memory element includes a magnetic free layer; a magnetic reference layer; and an insulating tunnel junction layer interposed therebetween. The two-terminal bidirectional selector includes a bottom electrode; a top electrode; a load-resistance layer interposed between the bottom and top electrodes and comprising a first tantalum oxide; a first volatile switching layer interposed between the bottom and top electrodes and comprising a metal dopant and a second tantalum oxide that has a higher oxygen content than the first tantalum oxide; and a second volatile switching layer in contact with the first volatile switching layer and comprising a third tantalum oxide that has a higher oxygen content than the first tantalum oxide.
    Type: Grant
    Filed: April 10, 2021
    Date of Patent: December 19, 2023
    Assignee: Avalanche Technology, Inc.
    Inventors: Zhiqiang Wei, Kimihiro Satoh, Woojin Kim, Zihui Wang
  • Publication number: 20230403945
    Abstract: A magnetic memory element including first and second magnetic free layers having a variable magnetization direction substantially perpendicular to layer planes thereof; a first perpendicular enhancement layer (PEL) interposed between the first and second magnetic free layers; first and second magnetic reference layers having a first invariable magnetization direction substantially perpendicular to layer planes thereof; a second PEL interposed between the first and second magnetic reference layers; an insulating tunnel junction layer formed between the first magnetic free layer and reference layer; an anti-ferromagnetic coupling layer formed adjacent to the second magnetic reference layer; a magnetic fixed layer formed adjacent to the anti-ferromagnetic coupling layer and having a second invariable magnetization direction substantially opposite to the first invariable magnetization direction; a non-magnetic layer comprising oxygen and a transition metal and formed adjacent to the second magnetic free layer; an
    Type: Application
    Filed: August 26, 2023
    Publication date: December 14, 2023
    Inventors: Zihui Wang, Yiming Huai
  • Patent number: 11785784
    Abstract: The present invention is directed to a perpendicular magnetic structure including a seed layer structure that includes a first seed layer comprising a metal element and oxygen, and a second seed layer formed on top of the first seed layer and comprising chromium. The metal element is one of titanium, tantalum, or magnesium. The perpendicular magnetic structure further includes a magnetic fixed layer structure formed on top of the seed layer structure and having an invariable magnetization direction substantially perpendicular to a layer plane of the magnetic fixed layer structure. The magnetic fixed layer structure includes layers of a magnetic material interleaved with layers of a transition metal. The magnetic material includes cobalt. The transition metal is one of nickel, platinum, palladium, or iridium.
    Type: Grant
    Filed: May 24, 2022
    Date of Patent: October 10, 2023
    Assignee: Avalanche Technology, Inc.
    Inventors: Zihui Wang, Yiming Huai
  • Patent number: 11758822
    Abstract: The present invention is directed to a magnetic memory element including a magnetic free layer structure incorporating two magnetic free layers separated by a perpendicular enhancement layer (PEL) and having a variable magnetization direction substantially perpendicular to layer planes thereof; an insulating tunnel junction layer formed adjacent to the magnetic free layer structure; a magnetic reference layer structure formed adjacent to the insulating tunnel junction layer opposite the magnetic free layer structure; an anti-ferromagnetic coupling layer formed adjacent to the magnetic reference layer structure; and a magnetic fixed layer formed adjacent to the anti-ferromagnetic coupling layer. The magnetic reference layer structure includes first, second, and third magnetic reference layers separated by two PELs and having a first invariable magnetization direction substantially perpendicular to layer planes thereof.
    Type: Grant
    Filed: July 22, 2022
    Date of Patent: September 12, 2023
    Assignee: Avalanche Technology, Inc.
    Inventors: Zihui Wang, Yiming Huai
  • Publication number: 20230278366
    Abstract: The present invention belongs to the technical field of electric automobiles and particularly relates to a fault tolerance decision-making method and system for sensor failure of a vehicular wheel hub driving system. The method comprises a current sensor failure diagnostic process, a position/velocity sensor failure diagnostic process and a selection process for a wheel hub motor fault tolerance control method. The system comprises a current sensor failure diagnostic module, a position/velocity sensor failure diagnostic module and a selection module for a wheel hub motor fault tolerance control method. The position/velocity sensor failure diagnostic module further comprises a fault tolerance control switching module.
    Type: Application
    Filed: December 20, 2022
    Publication date: September 7, 2023
    Inventors: Zihui WANG, Weigong ZHAO, Zhiyuan HE, Jiongjiong CAI, Zhentao QIAN
  • Publication number: 20220383920
    Abstract: The present invention is directed to a magnetic memory cell including a magnetic tunnel junction (MTJ) memory element and a two-terminal bidirectional selector coupled in series between two conductive lines. The MTJ memory element includes a magnetic free layer; a magnetic reference layer; and an insulating tunnel junction layer interposed therebetween. The two-terminal bidirectional selector includes a bottom electrode; a top electrode; a load-resistance layer interposed between the bottom and top electrodes and comprising a first tantalum oxide; a first volatile switching layer interposed between the bottom and top electrodes and comprising a metal dopant and a second tantalum oxide that has a higher oxygen content than the first tantalum oxide; and a second volatile switching layer in contact with the first volatile switching layer and comprising a third tantalum oxide that has a higher oxygen content than the first tantalum oxide.
    Type: Application
    Filed: April 10, 2021
    Publication date: December 1, 2022
    Inventors: Zhiqiang Wei, Kimihiro Satoh, Woojin Kim, Zihui Wang
  • Publication number: 20220376172
    Abstract: The present invention is directed to a magnetic memory element including a magnetic free layer structure incorporating two magnetic free layers separated by a perpendicular enhancement layer (PEL) and having a variable magnetization direction substantially perpendicular to layer planes thereof; an insulating tunnel junction layer formed adjacent to the magnetic free layer structure; a magnetic reference layer structure formed adjacent to the insulating tunnel junction layer opposite the magnetic free layer structure; an anti-ferromagnetic coupling layer formed adjacent to the magnetic reference layer structure; and a magnetic fixed layer formed adjacent to the anti-ferromagnetic coupling layer. The magnetic reference layer structure includes first, second, and third magnetic reference layers separated by two PELs and having a first invariable magnetization direction substantially perpendicular to layer planes thereof.
    Type: Application
    Filed: July 22, 2022
    Publication date: November 24, 2022
    Inventors: Zihui Wang, Yiming Huai
  • Publication number: 20220293677
    Abstract: The present invention is directed to a perpendicular magnetic structure including a seed layer structure that includes a first seed layer comprising a metal element and oxygen, and a second seed layer formed on top of the first seed layer and comprising chromium. The metal element is one of titanium, tantalum, or magnesium. The perpendicular magnetic structure further includes a magnetic fixed layer structure formed on top of the seed layer structure and having an invariable magnetization direction substantially perpendicular to a layer plane of the magnetic fixed layer structure. The magnetic fixed layer structure includes layers of a magnetic material interleaved with layers of a transition metal. The magnetic material includes cobalt. The transition metal is one of nickel, platinum, palladium, or iridium.
    Type: Application
    Filed: May 24, 2022
    Publication date: September 15, 2022
    Inventors: Zihui Wang, Yiming Huai
  • Patent number: 11417836
    Abstract: The present invention is directed to a magnetic memory element including a magnetic free layer structure incorporating three magnetic free layers separated by two perpendicular enhancement layers (PELs) and having a variable magnetization direction substantially perpendicular to layer planes thereof; an insulating tunnel junction layer formed adjacent to the magnetic free layer structure; a first magnetic reference layer formed adjacent to the insulating tunnel junction layer opposite the magnetic free layer structure; a second magnetic reference layer separated from the first magnetic reference layer by a third perpendicular enhancement layer; an anti-ferromagnetic coupling layer formed adjacent to the second magnetic reference layer; and a magnetic fixed layer formed adjacent to the anti-ferromagnetic coupling layer. The first and second magnetic reference layers have a first invariable magnetization direction substantially perpendicular to layer planes thereof.
    Type: Grant
    Filed: January 23, 2021
    Date of Patent: August 16, 2022
    Assignee: Avalanche Technology, Inc.
    Inventors: Yiming Huai, Zihui Wang