Patents by Inventor Keun-Woo Lee

Keun-Woo 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).

  • Publication number: 20240334673
    Abstract: A semiconductor device includes a lower substrate, a memory cell structure including a wordline on the lower substrate, a bitline disposed on the lower substrate and intersecting the wordline, and a cell capacitor connected to the lower substrate, an upper substrate having a back side adjacent to the lower substrate and a front side opposite to the back side, a circuit element disposed on the front side of the upper substrate and overlapping the memory cell structure in a vertical direction, and a through via penetrating the upper substrate and electrically connecting the memory cell structure and the circuit element with each other.
    Type: Application
    Filed: November 24, 2023
    Publication date: October 3, 2024
    Inventors: Ki Seok LEE, Hong Jun LEE, Hyun Geun CHOI, Keun Nam KIM, In Cheol NAM, Bo Won YOO, Jin Woo HAN
  • Publication number: 20240304726
    Abstract: A display device and method of fabricating the same are provided. The display device includes a substrate and a thin-film transistor formed on the substrate. The thin-film transistor includes a lower gate conductive layer disposed on the substrate, and a lower gate insulating film disposed on the lower gate conductive layer The lower gate insulating film includes an upper surface and sidewalls. The thin-film transistor includes an active layer disposed on the upper surface of the lower gate insulating film, the active layer including sidewalls. At least one of the sidewalls of the lower gate insulating film and at least one of the sidewalls of the active layer are aligned with each other.
    Type: Application
    Filed: May 15, 2024
    Publication date: September 12, 2024
    Applicant: Samsung Display Co., LTD.
    Inventors: Sang Sub KIM, Keun Woo KIM, Ji Yeong SHIN, Yong Su LEE, Myoung Geun CHA, Ki Seok CHOI, Sang Gun CHOI
  • Publication number: 20240306404
    Abstract: A semiconductor memory device including an active pattern on a first substrate and comprising a first and second surfaces opposite to each other in a first direction, a data storage pattern between the active pattern and the first substrate and connected to a first surface of the active pattern, a bit line on the active pattern, connected to a second surface of the active pattern, and extending in a second direction, a word line on a sidewall of the active pattern, a second substrate, a peripheral gate structure on a first surface of the second substrate, a first connection wiring structure on the first surface of the second substrate and connected to the peripheral gate structure and bit line, a second connection wiring structure on a second surface of the second substrate and a through via penetrating the second substrate and connecting the first and second connection wiring structures.
    Type: Application
    Filed: October 26, 2023
    Publication date: September 12, 2024
    Inventors: Hyun Geun CHOI, Ki Seok LEE, Keun Nam KIM, Seok Han PARK, Bo Won YOO, Jin Woo HAN
  • Publication number: 20240287924
    Abstract: The present invention provides method and apparatus for purifying exhaust gas of a vessel and a vessel including the same, in which a risk for a vessel and crew of being exposed to ammonia gas used to collect carbon dioxide included in exhaust gas emitted from a vessel may be minimized and an ammonia solution may be recycled and reused to collect carbon dioxide, in order to satisfy regulations on discharge of exhaust gas by the IMO. Also, the present invention provides an apparatus 1000 for purifying exhaust gas of a vessel and a method of purifying exhaust gas of a vessel using the same, in which carbon dioxide and sulfur dioxide included in exhaust gas emitted from a vessel may be collected by using a reaction solution and may be changed into a substance that does not affect the environment so as to be stored and transported to land.
    Type: Application
    Filed: December 21, 2021
    Publication date: August 29, 2024
    Applicants: HANWHA OCEAN CO., LTD., HI AIR KOREA
    Inventors: Keun Bae KIM, Gwang Hyun LEE, Hyung Ju ROH, Min Woo LEE, Won Kyeong SON, Byung Tak NAM, So Young CHOI, Seung Min JEON
  • Publication number: 20240286176
    Abstract: A substrate cleaning apparatus includes a stage on which a substrate is placed, a support unit configured to support the substrate and to rotate the substrate, and a cleaning unit configured to spray a dual fluid to clean the substrate, wherein the cleaning unit may include a spray nozzle including a spray hole opened toward the stage and configured to spray a dual fluid through the spray hole, a cover that may include an inlet surrounding at least a partial area of an outer circumferential surface of the spray hole, that may surround at least a partial area of an outer circumferential surface of the spray nozzle, and that may be spaced apart from the spray nozzle by a predetermined distance, and an air flow passage formed in a space between the cover and the spray nozzle and through which air sucked from the inlet flows.
    Type: Application
    Filed: September 18, 2023
    Publication date: August 29, 2024
    Applicant: KCTECH CO., LTD.
    Inventors: Keun Woo LEE, Dae Jung KANG, Byeong Jo PARK
  • Publication number: 20240266000
    Abstract: The present specification discloses a DNA encoding and decoding method capable of converting and storing data more efficiently, wherein the DNA encoding method according to the present specification may convert binary data into sequence information using basic base values and degenerate base values, the degenerate base value may be a combination of at least two basic base values among four basic bases and the DNA decoding method according to the present specification may divide the basic base value and the degenerate base value into binary data according to base types for the same position in a plurality of DNA strands.
    Type: Application
    Filed: February 6, 2024
    Publication date: August 8, 2024
    Inventor: Keun Woo LEE
  • Patent number: 11919122
    Abstract: A substrate processing apparatus includes: a conveyor belt configured to have an outer surface on which a bottom surface of a substrate is seated; and a polishing head unit configured to face an upper surface of the substrate, wherein the polishing head unit includes: a polishing head connected to a driver; a polishing pad configured to face the polishing head; a polishing pad fixing ring disposed between the polishing head and the polishing pad; and a temperature sensor configured to overlap the polishing pad fixing ring and to be spaced apart from the polishing pad fixing ring.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: March 5, 2024
    Assignees: SAMSUNG DISPLAY CO., LTD., KCTECH CO., LTD.
    Inventors: Seung Bae Kang, Sung Hyeon Park, Jung Gun Nam, Joon-Hwa Bae, Kyung Bo Lee, Keun Woo Lee, Woo Jin Cho, Byoung Kwon Choo
  • Publication number: 20220076750
    Abstract: A memory device according to an embodiment of the present disclosure may include a string including a plurality of memory cells and a select transistor connected between a conductive line and the plurality of memory cells; a peripheral circuit configured to perform an erase operation of the string; and a control logic configured to control the peripheral circuit to increase a voltage level of an erase voltage applied to the conductive line for a first time period from time one to later time two at a first voltage-time slope, and increase the voltage level of the erase voltage for a second time period from time two to later time three at a second voltage-time slope, during the erase operation, wherein the second voltage-time slope is greater than the first voltage-time slope.
    Type: Application
    Filed: March 11, 2021
    Publication date: March 10, 2022
    Applicant: SK hynix Inc.
    Inventors: Seong Ju PARK, Keun Woo LEE, In Geun LIM
  • Patent number: 11238926
    Abstract: A memory controller having an improved operation speed controls a memory device including a plurality of memory blocks. The memory controller includes: a remaining count determiner configured to determine a remaining count that is a number of program and erase operations to be additionally performed in the memory device based on a program/erase count received from the memory device, a retention period calculator configured to determine a retention period based on a power-off time and a power-on time of the memory device and a read voltage determiner configured to generate a changed read voltage table based on a default read voltage table and a coefficient determined according to the remaining count, and determine a read voltage to be used in the memory device according to the retention period among read voltages included in the changed read voltage table.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: February 1, 2022
    Assignee: SK hynix Inc.
    Inventors: You Min Ji, Keun Woo Lee
  • Publication number: 20210114163
    Abstract: A substrate processing apparatus includes: a conveyor belt configured to have an outer surface on which a bottom surface of a substrate is seated; and a polishing head unit configured to face an upper surface of the substrate, wherein the polishing head unit includes: a polishing head connected to a driver; a polishing pad configured to face the polishing head; a polishing pad fixing ring disposed between the polishing head and the polishing pad; and a temperature sensor configured to overlap the polishing pad fixing ring and to be spaced apart from the polishing pad fixing ring.
    Type: Application
    Filed: September 29, 2020
    Publication date: April 22, 2021
    Inventors: Seung Bae KANG, Sung Hyeon PARK, Jung Gun NAM, Joon-Hwa BAE, Kyung Bo LEE, Keun Woo LEE, Woo Jin CHO, Byoung Kwon CHOO
  • Patent number: 10812425
    Abstract: A method, system, and quiz server for providing a quiz and an advertisement simultaneously in an IMS chat is provided. The method includes creating a chat room from a mobile terminal while inviting a pre-registered quizbot as a chat participant, displaying a quiz and an advertisement within the chat room on the mobile terminal in the form of a chat message composed by the quizbot, and displaying, within the chat room, an answer of a certain chat participant with respect to the quiz, and inputting a result of determination of whether the answer is correct into the chat room by using the quizbot, displaying, within the chat room, the answer of the certain chat participant with respect to the quiz, and inputting a result of determination of whether the answer is correct into the chat room by using the quizbot.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: October 20, 2020
    Inventors: Chang Sub Jeon, Keun Woo Lee
  • Patent number: 10777285
    Abstract: A memory system includes: a memory device; and a non-erase block management device suitable for determining, when an erase operation is performed on a first memory block included in the memory device, whether to perform a read operation on a second word line of a second memory block, according to a location of a first word line, which is a target word line for a read operation on the second memory block, wherein the second word line includes a target word line for a dummy read operation.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: September 15, 2020
    Assignee: SK hynix Inc.
    Inventors: Won-Jin Jung, Keun-Woo Lee
  • Publication number: 20200202952
    Abstract: A controller, for use in memory system, includes: a processor configured to control a read operation for a target memory area of a memory device in response to a read command received from a host; and an error correction circuit configured to perform an error correction operation on read data corresponding to the read operation, wherein the processor selects an optimum read voltage set among a plurality of read voltage sets in a read retry table, based on an erase write cycling (EW) number of the target memory area and a fail bit number of the read data.
    Type: Application
    Filed: July 12, 2019
    Publication date: June 25, 2020
    Inventors: Keun Woo LEE, Hye Lyoung LEE, Yun Sik CHOI
  • Publication number: 20200168272
    Abstract: A memory controller having an improved operation speed controls a memory device including a plurality of memory blocks. The memory controller includes: a remaining count determiner configured to determine a remaining count that is a number of program and erase operations to be additionally performed in the memory device based on a program/erase count received from the memory device, a retention period calculator configured to determine a retention period based on a power-off time and a power-on time of the memory device and a read voltage determiner configured to generate a changed read voltage table based on a default read voltage table and a coefficient determined according to the remaining count, and determine a read voltage to be used in the memory device according to the retention period among read voltages included in the changed read voltage table.
    Type: Application
    Filed: July 16, 2019
    Publication date: May 28, 2020
    Inventors: You Min JI, Keun Woo LEE
  • Publication number: 20200044998
    Abstract: A method, system, and quiz server for providing a quiz and an advertisement simultaneously in an IMS chat is provided. The method includes creating a chat room from a mobile terminal while inviting a pre-registered quizbot as a chat participant, displaying a quiz and an advertisement within the chat room on the mobile terminal in the form of a chat message composed by the quizbot, and displaying, within the chat room, an answer of a certain chat participant with respect to the quiz, and inputting a result of determination of whether the answer is correct into the chat room by using the quizbot, displaying, within the chat room, the answer of the certain chat participant with respect to the quiz, and inputting a result of determination of whether the answer is correct into the chat room by using the quizbot.
    Type: Application
    Filed: September 29, 2017
    Publication date: February 6, 2020
    Inventors: Chang Sub JEON, Keun Woo LEE
  • Publication number: 20190267103
    Abstract: A memory system includes: a memory device; and a non-erase block management device suitable for determining, when an erase operation is performed on a first memory block included in the memory device, whether to perform a read operation on a second word line of a second memory block, according to a location of a first word line, which is a target word line for a read operation on the second memory block, wherein the second word line includes a target word line for a dummy read operation.
    Type: Application
    Filed: September 4, 2018
    Publication date: August 29, 2019
    Inventors: Won-Jin JUNG, Keun-Woo LEE
  • Publication number: 20190096485
    Abstract: A controller which controls an operation of a semiconductor memory device including a plurality of memory blocks. The controller includes a randomizer. The randomizer generates randomized data, based on a block address of a target memory block, and a program-erase count value or the target memory block. Accordingly, the performance of a memory system is improved.
    Type: Application
    Filed: April 25, 2018
    Publication date: March 28, 2019
    Inventors: Won Jin JUNG, Keun Woo LEE
  • Patent number: 10001937
    Abstract: A memory device may include: a memory cell array comprising a plurality of search regions, each of the search regions comprising a plurality of group regions, each of the group regions comprising a flag cell, each flag cell comprising information indicating whether the corresponding group region is programmed; a voltage generator suitable for generating a read bias voltage for the memory cell array according to a voltage control signal; and a memory controller suitable for selecting a search region and controlling the voltage generator to adjust the read bias voltage based on information of flag cell of the selected search region when a read command is received, and controlling a read operation for the selected search region based on the adjusted read bias voltage.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: June 19, 2018
    Assignee: SK Hynix Inc.
    Inventors: Won-Jin Jung, Ga-Ram Han, Keun-Woo Lee
  • Patent number: 9977735
    Abstract: An operating method of a data storage device includes setting a first page access unit using a first page electrically coupled with a first word line of a first plane and a second page electrically coupled with a second word line of a second plane; and setting a second page access unit using a third page electrically coupled with a second word line of the first plane and a fourth page electrically coupled with a first word line of the second plane.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: May 22, 2018
    Assignee: SK Hynix Inc.
    Inventors: Keun Woo Lee, Jong Hee Han
  • Publication number: 20180059971
    Abstract: A memory device may include: a memory cell array comprising a plurality of search regions, each of the search regions comprising a plurality of group regions, each of the group regions comprising a flag cell, each flag cell comprising information indicating whether the corresponding group region is programmed; a voltage generator suitable for generating a read bias voltage for the memory cell array according to a voltage control signal; and a memory controller suitable for selecting a search region and controlling the voltage generator to adjust the read bias voltage based on information of flag cell of the selected search region when a read command is received, and controlling a read operation for the selected search region based on the adjusted read bias voltage.
    Type: Application
    Filed: March 2, 2017
    Publication date: March 1, 2018
    Inventors: Won-Jin JUNG, Ga-Ram HAN, Keun-Woo LEE