Patents by Inventor Hyungrock Oh

Hyungrock Oh 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).

  • Publication number: 20240107739
    Abstract: A memory device configured as a dynamic random access memory is provided, comprising a first semiconductor device layer comprising a first bit cell and a second semiconductor device layer comprising a second DRAM bit cell. Further, at least one of a first and second interconnecting structure is provided, the first interconnecting structure extending vertically between the first and second semiconductor device layer and being arranged to form a write word line common to the gate terminal of the write transistors of the first and second bit cells, and the second interconnecting structure extending vertically between the first and second semiconductor device layer and being arranged to form a read word line common to a first source/drain terminal of the read transistors of the first and second bit cells.
    Type: Application
    Filed: September 21, 2023
    Publication date: March 28, 2024
    Inventors: Nouredine Rassoul, Hyungrock Oh, Romain Delhougne, Gouri Sankar Kar, Attilio Belmonte, Kaustuv Banerjee, Mohit Gupta
  • Patent number: 11449740
    Abstract: A synapse circuit with an arrayed structured memory for machine learning applications is disclosed. The synapse circuit comprises a controlled variable resistance, a controlled switch connected to a contact terminal of the controlled variable resistance, and a memory cell for storing a weight variable. The memory cell is operatively connected to a control terminal of the controlled switch. A control terminal of the controlled variable resistance is configured for receiving an activation signal. The controlled variable resistance has a first resistance value and a second resistance value substantially larger than the first resistance value. A ratio of the second resistance value to the first resistance value is at least one hundred.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: September 20, 2022
    Assignee: IMEC VZW
    Inventors: Bharani Chakravarthy Chava, Shairfe Muhammad Salahuddin, Hyungrock Oh
  • Publication number: 20200202202
    Abstract: A synapse circuit with an arrayed structured memory for machine learning applications is disclosed. The synapse circuit comprises a controlled variable resistance, a controlled switch connected to a contact terminal of the controlled variable resistance, and a memory cell for storing a weight variable. The memory cell is operatively connected to a control terminal of the controlled switch. A control terminal of the controlled variable resistance is configured for receiving an activation signal. The controlled variable resistance has a first resistance value and a second resistance value substantially larger than the first resistance value. A ratio of the second resistance value to the first resistance value is at least one hundred.
    Type: Application
    Filed: December 18, 2019
    Publication date: June 25, 2020
    Inventors: Bharani Chakravarthy Chava, Shairfe Muhammad Salahuddin, Hyungrock Oh
  • Patent number: 10403627
    Abstract: The disclosed technology relates to a memory device for a dynamic random access memory, or DRAM. In one aspect, the memory device includes a substrate supporting a semiconductor device layer in which a plurality of semiconductor devices are formed. The memory device may further include an interconnection portion formed above the substrate and including a number of metallization levels and dielectric layers, the interconnection portion being adapted to interconnect said semiconductor devices. The memory device may further include a plurality of bit cell stacks arranged in the interconnection portion, each bit cell stack including a plurality of bit cells. Further, such bit cells may include elements such as a charge storage element, a write transistor, and a read transistor.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: September 3, 2019
    Assignee: IMEC vzw
    Inventors: Jan Van Houdt, Julien Ryckaert, Hyungrock Oh
  • Publication number: 20180102365
    Abstract: The disclosed technology relates to a memory device for a dynamic random access memory, or DRAM. In one aspect, the memory device includes a substrate supporting a semiconductor device layer in which a plurality of semiconductor devices are formed. The memory device may further include an interconnection portion formed above the substrate and including a number of metallization levels and dielectric layers, the interconnection portion being adapted to interconnect said semiconductor devices. The memory device may further include a plurality of bit cell stacks arranged in the interconnection portion, each bit cell stack including a plurality of bit cells. Further, such bit cells may include elements such as a charge storage element, a write transistor, and a read transistor.
    Type: Application
    Filed: October 10, 2017
    Publication date: April 12, 2018
    Inventors: Jan Van Houdt, Julien Ryckaert, Hyungrock Oh