Patents by Inventor Kang Sik Choi

Kang Sik Choi 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: 11557600
    Abstract: A semiconductor device and a method of manufacturing a semiconductor device pertain to a semiconductor device having a channel pattern, wherein the channel pattern includes a pipe channel and vertical channels protruding in a first direction from the pipe channel. The semiconductor device also has interlayer insulating layers disposed over the pipe channel and gate electrodes disposed over the pipe channel, wherein the gate electrodes are alternately stacked with the interlayer insulating layers in the first direction, wherein the stacked interlayer insulating layers and gate electrodes surround the vertical channels, and wherein the gate electrodes include a first conductive pattern and second conductive patterns. The semiconductor device further has an etch stop pattern disposed over the first conductive pattern and under the second conductive patterns.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: January 17, 2023
    Assignee: SK hynix Inc.
    Inventor: Kang Sik Choi
  • Publication number: 20220399365
    Abstract: There are provided a semiconductor memory device and a manufacturing method of a semiconductor memory device. The semiconductor memory device includes a conductive gate contact penetrating a contact region of a stepped stack structure including a plurality of interlayer insulating layers and a plurality of conductive patterns, which are alternately stacked.
    Type: Application
    Filed: December 3, 2021
    Publication date: December 15, 2022
    Applicant: SK hynix Inc.
    Inventor: Kang Sik CHOI
  • Patent number: 11488962
    Abstract: The disclosure relates to a highly integrated memory device and a method for manufacturing the same. According to the disclosure, a memory device comprises a lower structure, an active layer horizontally oriented parallel to a surface of the lower structure, a bit line connected to a first end of the active layer and vertically oriented from the surface of the lower structure, a capacitor connected to a second end of the active layer, a word line horizontally oriented to be parallel with the active layer along a side surface of the active layer, and a fin channel layer horizontally extending from one side surface of the active layer, wherein the word line includes a protrusion covering the fin channel layer.
    Type: Grant
    Filed: February 3, 2021
    Date of Patent: November 1, 2022
    Assignee: SK hynix Inc.
    Inventor: Kang Sik Choi
  • Patent number: 11462559
    Abstract: A semiconductor device and a method of manufacturing a semiconductor device pertain to a semiconductor device having a channel pattern, wherein the channel pattern includes a pipe channel and vertical channels protruding in a first direction from the pipe channel. The semiconductor device also has interlayer insulating layers disposed over the pipe channel and gate electrodes disposed over the pipe channel, wherein the gate electrodes are alternately stacked with the interlayer insulating layers in the first direction, wherein the stacked interlayer insulating layers and gate electrodes surround the vertical channels, and wherein the gate electrodes include a first conductive pattern and second conductive patterns. The semiconductor device further has an etch stop pattern disposed over the first conductive pattern and under the second conductive patterns.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: October 4, 2022
    Assignee: SK hynix Inc.
    Inventor: Kang Sik Choi
  • Publication number: 20220285372
    Abstract: Provided herein is a semiconductor memory device and a method of manufacturing the semiconductor memory device. The semiconductor memory device includes a stacked body including conductive patterns and interlayer insulating layers that are alternately stacked, a lower channel portion passing through the stacked body, a memory layer disposed between the stacked body and the lower channel portion, a upper channel portion disposed on the lower channel portion, a gate insulating layer enclosing a sidewall of the upper channel portion, a first gate pattern enclosing a sidewall of the gate insulating layer, a separation insulating pattern contacting a first portion of the first gate pattern, and a second gate pattern contacting a second portion of the first gate pattern.
    Type: Application
    Filed: August 19, 2021
    Publication date: September 8, 2022
    Applicant: SK hynix Inc.
    Inventor: Kang Sik CHOI
  • Patent number: 11437390
    Abstract: Provided herein may be a semiconductor device. The semiconductor device may include a stack. The semiconductor device may include channel layers including channel patterns passing through the stack, dummy channel patterns passing through the stack, and a coupling pattern which may be disposed below the stack and couples the channel patterns with the dummy channel patterns. The semiconductor device may include a bit line which is disposed on the stack and coupled with the channel patterns. The semiconductor device may include a well pick-up line which is disposed on the stack and coupled with the dummy channel patterns.
    Type: Grant
    Filed: January 22, 2021
    Date of Patent: September 6, 2022
    Assignee: SK hynix Inc.
    Inventor: Kang Sik Choi
  • Publication number: 20220189958
    Abstract: Provided herein may be a semiconductor device. The semiconductor device may include a first stacked body including a first stacked insulating layer and a first stacked conductive layer that are alternately stacked; a capacitor plug passing through the second stacked body; and a capacitor multi-layered layer configured to enclose the capacitor plug. The capacitor plug may include metal.
    Type: Application
    Filed: June 22, 2021
    Publication date: June 16, 2022
    Applicant: SK hynix Inc.
    Inventor: Kang Sik CHOI
  • Publication number: 20220173117
    Abstract: A method of manufacturing a semiconductor device may include forming a stack with alternately stacked first material layers and second material layers, forming a first opening that passes through the stack, forming a blocking layer in the first opening, forming a data storage layer in the blocking layer, forming a slit passing through the stack, forming second openings by selectively removing the second material layers through the slit, selectively forming a protective layer on exposed surfaces of the first material layers, etching the blocking layer through the second openings, oxidizing the protective layer, and forming insulating layers in the second openings.
    Type: Application
    Filed: June 10, 2021
    Publication date: June 2, 2022
    Applicant: SK hynix Inc.
    Inventor: Kang Sik CHOI
  • Publication number: 20220130860
    Abstract: A semiconductor memory device, and a method of manufacturing the semiconductor memory device, includes: a substrate including a peripheral circuit, a gate stack structure disposed over the substrate and including a cell array region and a stepped region that extends from the cell array region, a channel structure passing through the cell array region of the gate stack structure, a memory layer surrounding a sidewall of the channel structure, a first contact plug passing through the stepped region of the gate stack structure, and an insulating structure surrounding a sidewall of the first contact plug to insulate the first contact plug from the gate stack structure.
    Type: Application
    Filed: January 10, 2022
    Publication date: April 28, 2022
    Applicant: SK hynix Inc.
    Inventor: Kang Sik CHOI
  • Publication number: 20220115507
    Abstract: A semiconductor device and a manufacturing method thereof includes a source contact structure, a gate stack structure including a side region adjacent to the source contact structure, and a center region extending from the side region. The semiconductor device further includes a source gate pattern disposed under the side region of the first gate stack structure. The source gate pattern has an inclined surface facing the source contact structure. The semiconductor device also includes a channel pattern penetrating the center region of the gate stack structure, the channel pattern extending toward and contacting the source contact structure.
    Type: Application
    Filed: December 20, 2021
    Publication date: April 14, 2022
    Applicant: SK hynix Inc.
    Inventor: Kang Sik CHOI
  • Publication number: 20220102372
    Abstract: A semiconductor device including: a stack including first conductive layers and insulating layers that are alternately stacked; and second conductive layers disposed on the stack; a separation insulating structure disposed on the stack and configured to insulate the second conductive layers from each other; first channel layers passing through the stack; memory layers enclosing sidewalls of the first channel layers; second channel layers disposed on the stack and passing through the second conductive layers, and each having a width less than a width of the first channel layers; gate insulating layers enclosing sidewalls of the second channel layers; and third channel layers configured to respectively couple the first channel layers with the second channel layers and extending into the second channel layers.
    Type: Application
    Filed: March 25, 2021
    Publication date: March 31, 2022
    Applicant: SK hynix Inc.
    Inventor: Kang Sik CHOI
  • Publication number: 20220077156
    Abstract: The disclosure relates to a highly integrated memory device and a method for manufacturing the same. According to the disclosure, a memory device comprises a lower structure, an active layer horizontally oriented parallel to a surface of the lower structure, a bit line connected to a first end of the active layer and vertically oriented from the surface of the lower structure, a capacitor connected to a second end of the active layer, a word line horizontally oriented to be parallel with the active layer along a side surface of the active layer, and a fin channel layer horizontally extending from one side surface of the active layer, wherein the word line includes a protrusion covering the fin channel layer.
    Type: Application
    Filed: February 3, 2021
    Publication date: March 10, 2022
    Inventor: Kang Sik CHOI
  • Patent number: 11257843
    Abstract: A semiconductor memory device, and a method of manufacturing the semiconductor memory device, includes: a substrate including a peripheral circuit, a gate stack structure disposed over the substrate and including a cell array region and a stepped region that extends from the cell array region, a channel structure passing through the cell array region of the gate stack structure, a memory layer surrounding a sidewall of the channel structure, a first contact plug passing through the stepped region of the gate stack structure, and an insulating structure surrounding a sidewall of the first contact plug to insulate the first contact plug from the gate stack structure.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: February 22, 2022
    Assignee: SK hynix Inc.
    Inventor: Kang Sik Choi
  • Patent number: 11239333
    Abstract: A semiconductor device and a manufacturing method thereof includes a source contact structure, a gate stack structure including a side region adjacent to the source contact structure, and a center region extending from the side region. The semiconductor device further includes a source gate pattern disposed under the side region of the first gate stack structure. The source gate pattern has an inclined surface facing the source contact structure. The semiconductor device also includes a channel pattern penetrating the center region of the gate stack structure, the channel pattern extending toward and contacting the source contact structure.
    Type: Grant
    Filed: October 12, 2020
    Date of Patent: February 1, 2022
    Assignee: SK hynix Inc.
    Inventor: Kang Sik Choi
  • Patent number: 11217671
    Abstract: A semiconductor device and manufacturing method includes a well structure, a gate stack structure spaced apart from the well structure, the gate stack structure being disposed over the well structure, and a source contact structure facing a sidewall of the gate stack structure. The semiconductor device further includes a channel pattern having pillar parts penetrating the gate stack structure, a first connecting part extending along a bottom surface of the gate stack structure from the pillar parts, and a second connecting part extending from the first connecting part to contact a first surface of the source contact structure facing the well structure.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: January 4, 2022
    Assignee: SK hynix Inc.
    Inventor: Kang Sik Choi
  • Patent number: 11133328
    Abstract: A semiconductor device includes: a stack structure including horizontal conductive patterns and interlayer insulating layers, which are alternately stacked; gate patterns overlapping with both ends of the stack structure under the stack structure, the gate patterns being spaced apart from each other; and a channel pattern including vertical parts penetrating the stack structure, and a connection part disposed under the stack structure, the connection part connecting the vertical parts.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: September 28, 2021
    Assignee: SK hynix Inc.
    Inventor: Kang Sik Choi
  • Publication number: 20210249441
    Abstract: A semiconductor device includes: a first stack structure; a second stack structure adjacent to the first stack structure in a first direction; a first insulating layer including protrusion parts protruding in a second direction intersecting the first direction and including a concave part defined between the protrusion parts; and a second insulating layer located between the first stack structure and the second stack structure, the second insulating layer inserted into the concave part and the second insulating layer in contact with at least one protrusion part among the protrusion parts.
    Type: Application
    Filed: April 28, 2021
    Publication date: August 12, 2021
    Applicant: SK hynix Inc.
    Inventors: Sang Yong LEE, Sang Min KIM, Jung Ryul AHN, Sang Hyun OH, Seung Bum CHA, Kang Sik CHOI
  • Patent number: 11024647
    Abstract: A semiconductor device includes: a first stack structure; a second stack structure adjacent to the first stack structure in a first direction; a first insulating layer including protrusion parts protruding in a second direction intersecting the first direction and including a concave part defined between the protrusion parts; and a second insulating layer located between the first stack structure and the second stack structure, the second insulating layer inserted into the concave part and the second insulating layer in contact with at least one protrusion part among the protrusion parts.
    Type: Grant
    Filed: June 16, 2020
    Date of Patent: June 1, 2021
    Assignee: SK hynix Inc.
    Inventors: Sang Yong Lee, Sang Min Kim, Jung Ryul Ahn, Sang Hyun Oh, Seung Bum Cha, Kang Sik Choi
  • Publication number: 20210151453
    Abstract: Provided herein may be a semiconductor device. The semiconductor device may include a stack. The semiconductor device may include channel layers including channel patterns passing through the stack, dummy channel patterns passing through the stack, and a coupling pattern which may be disposed below the stack and couples the channel patterns with the dummy channel patterns. The semiconductor device may include a bit line which is disposed on the stack and coupled with the channel patterns. The semiconductor device may include a well pick-up line which is disposed on the stack and coupled with the dummy channel patterns.
    Type: Application
    Filed: January 22, 2021
    Publication date: May 20, 2021
    Applicant: SK hynix Inc.
    Inventor: Kang Sik CHOI
  • Publication number: 20210134821
    Abstract: A semiconductor memory device includes a first stack including lower conductive patterns separated from each other and stacked on a substrate to form a lower stepped structure, a support pillar passing through the first stack and including an insulating layer, a second stack including upper conductive patterns separated from each other and stacked on the first stack, the upper conductive patterns including an upper stepped structure that does not overlap with the lower stepped structure and the support pillar, a channel structure passing through the second stack and the first stack, and a memory layer surrounding a sidewall of the channel structure.
    Type: Application
    Filed: June 22, 2020
    Publication date: May 6, 2021
    Applicant: SK hynix Inc.
    Inventor: Kang Sik CHOI