Patents by Inventor Jin-Haeng Lee

Jin-Haeng 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: 12183269
    Abstract: A display apparatus is capable of improving a dynamic false contour. The display apparatus may control to change an order of a plurality of pulses of which widths are modulated for an emission time set within one frame, or divide pulses corresponding to the most significant bit (MSB) and the second significant bit (MSB-1) of image data among the pulses into two or more sub-pulses, and output the sub-pulses.
    Type: Grant
    Filed: August 11, 2023
    Date of Patent: December 31, 2024
    Assignee: SAPIEN Semiconductors Inc.
    Inventors: Ji Haeng Lee, Jin Woong Jang, Ji Han Kim, Dae Young Jung, Jong Gu Jeon, Do Kyung Kim
  • Patent number: 12175937
    Abstract: Provided is a pixel driving circuit capable of reducing power consumed for pixel driving by reducing the number of times a capacitor is charged. The pixel driving circuit includes: a video memory configured to store video data related to driving of a plurality of light-emitting devices; a plurality of sub-pixel driving units, respectively corresponding to the plurality of light-emitting devices, configured to supply power to the plurality of light-emitting devices according to the video data stored in the video memory, each of the plurality of sub-pixel driving units having a capacitor unit for charging power required for driving each of the plurality of light-emitting devices; a charge control memory configured to store data related to charging of the capacitor unit; and a charge controller configured to control whether the capacitor unit is charged according to charge control data stored in the charge control memory.
    Type: Grant
    Filed: October 16, 2023
    Date of Patent: December 24, 2024
    Assignee: SAPIEN Semiconductors Inc.
    Inventors: Ji Han Kim, Jin Woong Jang, Ji Haeng Lee, Dae Young Jung, Jong Gu Jeon
  • Publication number: 20240416312
    Abstract: An apparatus for preparing lithium sulfide includes a reaction chamber that has a reaction space for generating lithium sulfide and is provided to move a supplied lithium raw material in a predetermined direction; a lithium raw material supply unit provided to continuously supply the lithium raw material to an upstream side of the reaction chamber in the predetermined direction; a hydrogen sulfide supply unit provided to supply hydrogen sulfide to the reaction chamber; a heating unit; a lithium sulfide recovery unit provided on a downstream side of the reaction chamber in the predetermined direction and provided to recover lithium sulfide that is generated by a reaction between the hydrogen sulfide and the lithium raw material in the reaction chamber; an inert gas supply unit provided to supply an inert gas to the upstream side of the reaction chamber in the predetermined direction; and a moisture removal unit.
    Type: Application
    Filed: August 27, 2024
    Publication date: December 19, 2024
    Applicant: LAKE TECHNOLOGY., LTD
    Inventors: Seong Hoon JEONG, Sang Yun LEE, Sung Yoon BAEK, Yong Hwan NA, Taek Seung YANG, Yik Haeng CHO, Chang Ho SONG, Jin Dong KIM
  • Patent number: 11676674
    Abstract: A memory device includes a cell group including a plurality of non-volatile memory cells capable of storing data and a control circuit configured to perform plural program loops for storing the data, each program loop including a program voltage application operation and a verification operation. During the respective program loop, the control circuit performs the verification operation for an N target level, an N?1 target level lower than the N target level, and an N+1 higher than the N target level, in response to the program voltage application operation for the N target level. When a quantity of non-volatile memory cells having threshold voltages over the N+1 target level satisfies a preset criterion, the control circuit skips a next verification for a target level lower than the N+1 target level, in response to a next program voltage application operation for the N+1 target level.
    Type: Grant
    Filed: September 1, 2021
    Date of Patent: June 13, 2023
    Assignee: SK hynix Inc.
    Inventors: Sung Hyun Hwang, Jin Haeng Lee
  • Patent number: 11636899
    Abstract: Provided herein may be a memory device capable of completing program operations for multiple pages in one ready/busy period. The memory device may include a plurality of memory cells configured to form a plurality of pages, a peripheral circuit configured to perform a first program operation and a second program operation and control logic configured to control the peripheral circuit to receive least significant bit (LSB) page data of a page adjacent to a selected page, center significant bit (CSB) page data, and most significant bit (MSB) page data of the selected page from a memory controller, and program the LSB page data of the page adjacent to the page adjacent to the selected page and to obtain LSB page data from the selected page, previously stored in the selected page, and program the LSB page data, the CSB page data and the MSB page data of the selected page to the selected page.
    Type: Grant
    Filed: July 21, 2021
    Date of Patent: April 25, 2023
    Assignee: SK hynix Inc.
    Inventors: Sung Hyun Hwang, Jin Haeng Lee
  • Patent number: 11626173
    Abstract: A memory device having an improved operation speed includes: a memory cell; a page buffer connected to the memory cell through a bit line; and a program operation controller for controlling an operation of the page buffer. The page buffer includes: a bit line voltage supply for providing a precharge voltage to the bit line; a sensing node voltage supply for providing a sensing node precharge voltage to a sensing node connected to the bit line; a first latch for storing first verify data; a sensing node connector for releasing connection between the bit line and the sensing node, after the first verify data is stored; and a second latch for storing second verify data determined according to the voltage of the sensing node, after the connection between the bit line and the sensing node is released.
    Type: Grant
    Filed: August 11, 2021
    Date of Patent: April 11, 2023
    Assignee: SK hynix Inc.
    Inventors: Sung Hyun Hwang, Jin Haeng Lee
  • Patent number: 11551762
    Abstract: Provided herein may be a memory device capable of completing a foggy-fine program operation in one ready/busy period. The memory device may include a plurality of memory cells configured to form a plurality of pages, a peripheral circuit configured to perform a first program operation on a page adjacent to a selected page among the plurality of pages, and perform a second program operation on the selected page and control logic configured to control the peripheral circuit, during the first program operation, to successively receive least significant bit (LSB) page data, center significant bit (CSB) page data, and most significant bit (MSB) page data from a memory controller, and program the LSB page data to the page adjacent to the selected page and during the second program operation, to program the LSB page data programmed to the page adjacent to the selected page, the CSB page data and the MSB page data to the selected page.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: January 10, 2023
    Assignee: SK hynix Inc.
    Inventors: Sung Hyun Hwang, Jin Haeng Lee
  • Publication number: 20220328113
    Abstract: A memory device includes a cell group including a plurality of non-volatile memory cells capable of storing data and a control circuit configured to perform plural program loops for storing the data, each program loop including a program voltage application operation and a verification operation. During the respective program loop, the control circuit performs the verification operation for an N target level, an N?1 target level lower than the N target level, and an N+1 higher than the N target level, in response to the program voltage application operation for the N target level. When a quantity of non-volatile memory cells having threshold voltages over the N+1 target level satisfies a preset criterion, the control circuit skips a next verification for a target level lower than the N+1 target level, in response to a next program voltage application operation for the N+1 target level.
    Type: Application
    Filed: September 1, 2021
    Publication date: October 13, 2022
    Inventors: Sung Hyun HWANG, Jin Haeng LEE
  • Publication number: 20220270697
    Abstract: A memory device having an improved operation speed includes: a memory cell; a page buffer circuit connected to the memory cell through a bit line; and a program operation controller for controlling an operation of the page buffer circuit. The page buffer circuit includes: a bit line voltage supply for providing a precharge voltage to the bit line; a sensing node voltage supply for providing a sensing node precharge voltage to a sensing node connected to the bit line; a first latch for storing first verify data; a sensing node connector for releasing connection between the bit line and the sensing node, after the first verify data is stored; and a second latch for storing second verify data determined according to the voltage of the sensing node, after the connection between the bit line and the sensing node is released.
    Type: Application
    Filed: August 11, 2021
    Publication date: August 25, 2022
    Inventors: Sung Hyun HWANG, Jin Haeng LEE
  • Patent number: 11373718
    Abstract: Provided herein may be a memory device and a method of operating the same. The memory device may include a plurality of memory cells, each having an erased state or any one of a plurality of program states, a peripheral circuit configured to perform a program operation including a plurality of program loops, and an operation controller configured to control the peripheral circuit so that, in response to a pass in verification for an N-th program state among the plurality of program states in a verify phase included in an x-th program loop among the plurality of program loops, verification for an N+M-th program state among the plurality of program states starts in a verify phase included in an x+1-th program loop among the plurality of program loops.
    Type: Grant
    Filed: January 28, 2021
    Date of Patent: June 28, 2022
    Assignee: SK hynix Inc.
    Inventors: Sung Hyun Hwang, Jin Haeng Lee
  • Publication number: 20220122670
    Abstract: Provided herein may be a memory device capable of completing program operations for multiple pages in one ready/busy period. The memory device may include a plurality of memory cells configured to form a plurality of pages, a peripheral circuit configured to perform a first program operation and a second program operation and control logic configured to control the peripheral circuit to receive least significant bit (LSB) page data of a page adjacent to a selected page, center significant bit (CSB) page data, and most significant bit (MSB) page data of the selected page from a memory controller, and program the LSB page data of the page adjacent to the page adjacent to the selected page and to obtain LSB page data from the selected page, previously stored in the selected page, and program the LSB page data, the CSB page data and the MSB page data of the selected page to the selected page.
    Type: Application
    Filed: July 21, 2021
    Publication date: April 21, 2022
    Inventors: Sung Hyun HWANG, Jin Haeng LEE
  • Publication number: 20220122669
    Abstract: Provided herein may be a memory device capable of completing a foggy-fine program operation in one ready/busy period. The memory device may include a plurality of memory cells configured to form a plurality of pages, a peripheral circuit configured to perform a first program operation on a page adjacent to a selected page among the plurality of pages, and perform a second program operation on the selected page and control logic configured to control the peripheral circuit, during the first program operation, to successively receive least significant bit (LSB) page data, center significant bit (CSB) page data, and most significant bit (MSB) page data from a memory controller, and program the LSB page data to the page adjacent to the selected page and during the second program operation, to program the LSB page data programmed to the page adjacent to the selected page, the CSB page data and the MSB page data to the selected page.
    Type: Application
    Filed: April 20, 2021
    Publication date: April 21, 2022
    Inventors: Sung Hyun HWANG, Jin Haeng LEE
  • Publication number: 20220051739
    Abstract: Provided herein may be a memory device and a method of operating the same. The memory device may include a plurality of memory cells, each having an erased state or any one of a plurality of program states, a peripheral circuit configured to perform a program operation including a plurality of program loops, and an operation controller configured to control the peripheral circuit so that, in response to a pass in verification for an N-th program state among the plurality of program states in a verify phase included in an x-th program loop among the plurality of program loops, verification for an N+M-th program state among the plurality of program states starts in a verify phase included in an x+1-th program loop among the plurality of program loops.
    Type: Application
    Filed: January 28, 2021
    Publication date: February 17, 2022
    Inventors: Sung Hyun HWANG, Jin Haeng LEE
  • Patent number: 10818360
    Abstract: The present disclosure relates to a memory device and a memory system including the same. The memory device includes a memory cell storing data, a voltage generation circuit selectively outputting a program voltage and verify voltages in response to an operation control signal, a page buffer including first latches and second latches, and storing first data sensed by a first sensing current in the first latches and second data sensed by a sensing current greater than the first sensing current in the second latches during a verify operation using the verify voltages, and a pass/fail check circuit determining a pass or fail of the verify operation of the memory cell according to the first data and allowable bits.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: October 27, 2020
    Assignee: SK hynix Inc.
    Inventors: Jong Hoon Lee, Ji Hwan Kim, Kwang Ho Baek, Jin Haeng Lee
  • Publication number: 20200143886
    Abstract: The present disclosure relates to a memory device and a memory system including the same. The memory device includes a memory cell storing data, a voltage generation circuit selectively outputting a program voltage and verify voltages in response to an operation control signal, a page buffer including first latches and second latches, and storing first data sensed by a first sensing current in the first latches and second data sensed by a sensing current greater than the first sensing current in the second latches during a verify operation using the verify voltages, and a pass/fail check circuit determining a pass or fail of the verify operation of the memory cell according to the first data and allowable bits.
    Type: Application
    Filed: June 19, 2019
    Publication date: May 7, 2020
    Applicant: SK hynix Inc.
    Inventors: Jong Hoon LEE, Ji Hwan KIM, Kwang Ho BAEK, Jin Haeng LEE
  • Publication number: 20180291966
    Abstract: The present disclosure relates to a technology which effectively absorbs a gear shifting impact by sequential fastening discs or plates to one another by a friction element. The friction element includes: a multi-plate disc set having discs and/or plates, and a fastening device having springs. In particular, the springs may start to be compressed from a spring having the smallest spring constant to a spring having a greater spring constant so as to sequentially fasten the discs and plates to one another so that the amount of a change in a stroke of a piston with respect to a change in an operation force of the piston is sequentially reduced.
    Type: Application
    Filed: October 30, 2017
    Publication date: October 11, 2018
    Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Seong Eun YUN, Tae Seok SEO, Jin Haeng LEE
  • Publication number: 20130083600
    Abstract: A method of operating a semiconductor device includes selecting one of a plurality of memory cell blocks included in a memory cell array, programming even-numbered memory cells coupled to a selected word line among the word lines of the selected memory cell block, programming odd-numbered memory cells coupled to the selected word line, programming odd-numbered memory cells coupled to a next word line adjacent to the selected word line, and programming even-numbered memory cells coupled to the next word line, wherein the programming is repeated until programming on selected memory cells coupled to all the word lines of the selected memory cell block is completed.
    Type: Application
    Filed: September 14, 2012
    Publication date: April 4, 2013
    Applicant: SK hynix Inc.
    Inventor: Jin Haeng Lee
  • Patent number: 8335107
    Abstract: A semiconductor memory device comprises memory blocks having a plurality of memory cells coupled to a plurality of bit lines, a first latch group coupled to a sense node and configured to store data to be programmed into memory cells, where the memory cells are coupled to the bit lines and the sense node is coupled to at least one of the bit lines, a second latch group coupled to the sense node and configured to receive data of the first latch group, and a sense node voltage control circuit configured to control a voltage of the sense node according to data stored in the first latch group.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: December 18, 2012
    Assignee: Hynix Semiconductor Inc.
    Inventor: Jin Haeng Lee
  • Patent number: 8189394
    Abstract: The page buffer of a nonvolatile memory device utilizing a double verification method using first and second verification voltages when performing a program verification operation includes a first latch unit including a first latch configured to store input data and results of a program operation and a first verification operation using the first verification voltage, and a second latch unit including a second latch configured to have a higher latch trip point than the first latch and to store a result of a second verification operation using the second verification voltage, which is less than the first verification voltage, when the first verification operation is performed.
    Type: Grant
    Filed: December 28, 2009
    Date of Patent: May 29, 2012
    Assignee: Hynix Semiconductor Inc.
    Inventors: Hyun Jong Jin, Jin Haeng Lee
  • Publication number: 20120008406
    Abstract: A method of operating a nonvolatile memory device includes programming first memory cells to make threshold voltages of the first memory cells to reach a verification voltage determined based on program data of second memory cells to be programmed, and programming the second memory cells.
    Type: Application
    Filed: June 22, 2011
    Publication date: January 12, 2012
    Inventor: Jin Haeng LEE