Patents by Inventor Keun-Hwan Lee

Keun-Hwan Lee 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: 12237535
    Abstract: Provided is a composite separator for an electrochemical device, and the composite separator according to the present invention includes a porous substrate and a crystalline metal salt. The composite separator may serve as a salt source to a liquid electrolyte of the electrochemical device, and additionally or independently, may have flame retardancy by the metal salt.
    Type: Grant
    Filed: June 21, 2021
    Date of Patent: February 25, 2025
    Assignee: UBATT INC.
    Inventors: Chang Kyoo Lee, Jung Hwan Kim, Keun Ho Choi, Geon Hee Lee
  • Patent number: 12217694
    Abstract: A display device includes: a plurality of pixels connected to gate lines and data lines; a gate driver to supply a gate signal to the gate lines; and a data driver to supply a data signal to the data lines. The gate driver includes: a first transistor including a first active layer at a first layer; and a second transistor including a second active layer at a second layer on the first layer.
    Type: Grant
    Filed: April 15, 2020
    Date of Patent: February 4, 2025
    Assignee: Samsung Display Co., Ltd.
    Inventors: Keun Woo Kim, Mee Jae Kang, Doo Na Kim, Yun Jung Oh, Yong Su Lee, Jae Hwan Chu
  • Patent number: 11238954
    Abstract: A storage device includes a plurality of nonvolatile memory devices; and a controller connected in common to the plurality of nonvolatile memory devices through data lines, the controller being configured to detect first offset information by performing a first training operation with respect to a first nonvolatile memory device from among the plurality of nonvolatile memory devices, the controller being further configured to, based on the first offset information, perform a second training operation with respect to a second nonvolatile memory device from among the plurality of nonvolatile memory devices.
    Type: Grant
    Filed: August 20, 2020
    Date of Patent: February 1, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jongmin Kim, Yeongjin Seo, Keun-Hwan Lee
  • Publication number: 20200381075
    Abstract: A storage device includes a plurality of nonvolatile memory devices; and a controller connected in common to the plurality of nonvolatile memory devices through data lines, the controller being configured to detect first offset information by performing a first training operation with respect to a first nonvolatile memory device from among the plurality of nonvolatile memory devices, the controller being further configured to, based on the first offset information, perform a second training operation with respect to a second nonvolatile memory device from among the plurality of nonvolatile memory devices.
    Type: Application
    Filed: August 20, 2020
    Publication date: December 3, 2020
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jongmin KIM, Yeongjin SEO, Keun-Hwan LEE
  • Patent number: 10755797
    Abstract: A storage device includes a plurality of nonvolatile memory devices; and a controller connected in common to the plurality of nonvolatile memory devices through data lines, the controller being configured to detect first offset information by performing a first training operation with respect to a first nonvolatile memory device from among the plurality of nonvolatile memory devices, the controller being further configured to, based on the first offset information, perform a second training operation with respect to a second nonvolatile memory device from among the plurality of nonvolatile memory devices.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: August 25, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jongmin Kim, Yeongjin Seo, Keun-Hwan Lee
  • Patent number: 10366023
    Abstract: An operation method performed at a nonvolatile memory device may include receiving a program command and an address from an external device through a data signal (DQ), receiving a specific pattern from the external device through the data signal and a data strobe signal (DQS) synchronized with the data signal in a pattern period, receiving user data from the external device through the data signal and the data strobe signal in a data period, and selectively performing a program operation on the user data or a recovery operation based on a determination of whether the specific pattern matches with a particular pattern. A rising edge or a falling edge of the data strobe signal may be aligned with a left edge or a right edge of a window of the data signal in the pattern period.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: July 30, 2019
    Inventors: YoungWook Kim, Hyung-jin Kim, Soong-Man Shin, Keun-Hwan Lee
  • Publication number: 20190122745
    Abstract: A storage device includes a plurality of nonvolatile memory devices; and a controller connected in common to the plurality of nonvolatile memory devices through data lines, the controller being configured to detect first offset information by performing a first training operation with respect to a first nonvolatile memory device from among the plurality of nonvolatile memory devices, the controller being further configured to, based on the first offset information, perform a second training operation with respect to a second nonvolatile memory device from among the plurality of nonvolatile memory devices.
    Type: Application
    Filed: June 1, 2018
    Publication date: April 25, 2019
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jongmin KIM, Yeongjin Seo, Keun-Hwan Lee
  • Publication number: 20190079882
    Abstract: An operation method performed at a nonvolatile memory device may include receiving a program command and an address from an external device through a data signal (DQ), receiving a specific pattern from the external device through the data signal and a data strobe signal (DQS) synchronized with the data signal in a pattern period, receiving user data from the external device through the data signal and the data strobe signal in a data period, and selectively performing a program operation on the user data or a recovery operation based on a determination of whether the specific pattern matches with a particular pattern. A rising edge or a falling edge of the data strobe signal may be aligned with a left edge or a right edge of a window of the data signal in the pattern period.
    Type: Application
    Filed: April 27, 2018
    Publication date: March 14, 2019
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: YoungWook KIM, Hyung-jin Kim, Soong-Man Shin, Keun-Hwan Lee