Patents by Inventor Si-Woo Lee

Si-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: 20240147693
    Abstract: Systems, methods, and apparatus including conductive line contact regions having multiple multi-direction conductive lines and staircase conductive line contact structures for semiconductor devices. One memory device comprises arrays of vertically stacked memory cells, having multiple multi-direction conductive lines arrays of vertically stacked memory cells, including a vertical stack of layers formed from repeating iterations of a group of layers, the group of layers comprising: a first dielectric material layer, a semiconductor material layer, and a second dielectric material layer, the second dielectric material layer having a conductive line formed in a horizontal plane therein, and the vertical stack of layers having multiple multi-direction conductive lines in an interconnection region with a first portion of the interconnection region formed in an array region and a second portion formed in a conductive line contact region that is spaced from the array region.
    Type: Application
    Filed: January 4, 2024
    Publication date: May 2, 2024
    Inventors: Byung Yoon Kim, Sheng Wei Yang, Si-Woo Lee, Mark Zaleski
  • Publication number: 20240101738
    Abstract: An ethylene/alpha-olefin copolymer having excellent physical properties showing reduced immersion time of a crosslinking agent and a high degree of crosslinking, and a composition for an encapsulant film, comprising the same, is described herein.
    Type: Application
    Filed: October 28, 2022
    Publication date: March 28, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Jin Sam Gong, Eun Jung Lee, Jeong Yon Jeong, Young Woo Lee, Jung Kyu Lee, Si Jung Lee, Hye Ji Lee
  • Publication number: 20240098969
    Abstract: Systems, methods and apparatus are provided for an array of vertically stacked memory cells having horizontally oriented access devices and storage nodes formed in tiers. And, more particularly, to multiple, alternating silicon germanium (SiGe) and single crystalline silicon (Si) in different thicknesses to form tiers in which to form the horizontal access devices in vertical three-dimensional (3D) memory. The horizontally oriented access devices can have a first source/drain regions and a second source drain regions separated by single crystalline silicon (Si) channel regions. The single crystalline silicon (Si) channel regions can include a dielectric material to provide support structure to the single crystalline channel regions when forming the horizontal access devices in vertical three-dimensional (3D) memory. Horizontally oriented access lines can connect to gate structures opposing the channel regions. Vertical digit lines coupled to the first source/drain regions.
    Type: Application
    Filed: September 15, 2022
    Publication date: March 21, 2024
    Inventors: David K. Hwang, Yoshitaka Nakamura, Scott E. Sills, Si-Woo Lee, Yuanzhi Ma, Glen H. Walters
  • Publication number: 20240098970
    Abstract: Systems, methods and apparatus are provided for an array of vertically stacked memory cells having horizontally oriented access devices and storage nodes. The horizontally oriented access devices having a first source/drain regions and a second source drain regions separated by silicon (Si) channel regions. A digit line having a global digit line (GDL) contact is formed in a trench adjacent to the first source/drain regions. In one example, the digit line is electrically isolated from a neighboring digit line at the bottom of the trench. In another example, the digit line is formed continuously along a bottom surface of trench to form shared digit lines between horizontal access devices, in two separate arrays, on opposing second vertical surfaces. The memory cells have horizontally oriented storage nodes coupled to the second source/drain regions and vertical digit lines coupled to the first source/drain regions.
    Type: Application
    Filed: September 16, 2022
    Publication date: March 21, 2024
    Inventors: Scott E. Sills, Si-Woo Lee, David K. Hwang, Yoshitaka Nakamura, Yuanzhi Ma, Glen H. Walters
  • Publication number: 20240074141
    Abstract: Methods and devices for a lateral three-dimensional memory device, are described herein. One method includes forming a thin film transistor including a first thermal process having a first range of temperatures, forming a capacitor bottom electrode of a capacitor structure including a second thermal process having a second range of temperature, wherein a maximum temperature in the second range of temperatures is less than a maximum temperature in the first range of temperatures, forming a CMOS structure including a third thermal process having a third range of temperatures, wherein a maximum temperature in the third range of temperatures is less than a maximum temperature in the second range of temperatures, and forming at least one other part of the capacitor structure.
    Type: Application
    Filed: August 24, 2022
    Publication date: February 29, 2024
    Inventors: Yoshitaka Nakamura, Yuanzhi Ma, Scott E. Sills, Si-Woo Lee, David K. Hwang
  • Publication number: 20240072174
    Abstract: A variety of applications can include an apparatus having an electronic device including a number of transistors in a pair-wise arrangement that can address a floating body effect associated with the type of transistor implemented in the pair-wise arrangement. The transistors can be structured as thin film transistors having one-gate separated by a gate dielectric from a vertical channel structure. The pair-wise arrangement can include a conductive shield between a channel structure of a transistor of the pair and a channel structure of the other transistor of the other pair. A conductive body can be located below the conductive shield and shorted to the conductive shield, where the conductive body contacts the channel structures of the transistors of the pair-wise arrangement. The conductive shield can be coupled to node to be set at a constant voltage in operation.
    Type: Application
    Filed: August 23, 2023
    Publication date: February 29, 2024
    Inventors: Kamal M. Karda, Anthony J. Kanago, Haitao Liu, Si-Woo Lee, Soichi Sugiura
  • Publication number: 20240074144
    Abstract: Systems, methods and apparatus are provided for an array of vertically stacked memory cells having a bottom electrode contact for an array of vertically stacked memory cells. The bottom electrode contact is formed in a periphery region. The bottom electrode contact is electrically coupled to a number of bottom electrodes of capacitors that are also formed in the periphery region.
    Type: Application
    Filed: November 7, 2023
    Publication date: February 29, 2024
    Inventors: Yuichi Yokoyama, Si-Woo Lee
  • Publication number: 20240064972
    Abstract: Some embodiments include apparatuses and methods of forming the apparatuses. One of the apparatuses includes data lines; first structures located in a first region, electrically separated from each other, and including first conductive contacts coupled to the data lines; second conductive contacts located in the first region and coupled to memory elements of the apparatus; second structures located in a second region, electrically separated from each other, and including respective gates of transistors in the second region; a first dielectric material formed in the second region and including a first portion and a second portion, the first portion formed at a first side of a structure among the second structures, the second portion formed at a second side first of the structure; and a second dielectric material formed over the first structures and the second structure. A portion of the second dielectric material contacts the first portion of the first dielectric material.
    Type: Application
    Filed: August 22, 2022
    Publication date: February 22, 2024
    Inventors: Si-Woo Lee, Terrence B. Mcdaniel, Guangjun Yang, Vinay Nair
  • Publication number: 20240064966
    Abstract: Systems, methods and apparatus are provided for an array of vertically stacked memory cells. The vertically stacked memory cells have horizontally oriented access devices having a first source/drain region, a channel region, and a second source drain and horizontally oriented storage nodes that are vertically separated from the access devices. Horizontally oriented access lines are coupled to gates, separated from the respective channel regions by gate dielectrics, and vertically oriented digit lines are coupled to respective first source/drain regions. The horizontally oriented storage nodes each have a first electrode coupled to the second source/drain regions of the access devices and each first electrode opposes two different sides of the horizontal access devices including an electrical contact with a vertical side of the second source/drain regions.
    Type: Application
    Filed: August 19, 2022
    Publication date: February 22, 2024
    Inventors: Kamal M. Karda, Litao Yang, Haitao Liu, Si-Woo Lee
  • Publication number: 20240064956
    Abstract: Systems, methods and apparatus are provided for an array of vertically stacked memory cells. The vertically stacked memory cells have horizontally oriented access devices having a first source/drain region, a channel region, and a second source drain and horizontally oriented storage nodes that are vertically separated from the access devices. Vertically oriented gates are separated from the respective channel regions by gate dielectrics, and horizontally oriented digit lines are coupled to respective first source/drain regions. The horizontally oriented storage nodes each have a first electrode coupled to the second source/drain regions of the access devices and each first electrode opposes two different sides of the horizontal access devices including an electrical contact with a vertical side of the second source/drain regions.
    Type: Application
    Filed: August 19, 2022
    Publication date: February 22, 2024
    Inventors: Kamal M. Karda, Si-Woo Lee, Haitao Liu
  • Publication number: 20240063114
    Abstract: A variety of applications can include an apparatus having one or more antifuses, where the antifuses are structured using components of a FinFET architecture. An antifuse can include a gate, multiple source/drain regions, and one or more fins separated from the gate by a dielectric and individually connected to selected ones of the multiple source/drain regions. The one or more fins connect to and can extend from its associated source/drain region to a terminal fin location under the gate.
    Type: Application
    Filed: August 19, 2022
    Publication date: February 22, 2024
    Inventor: Si-Woo Lee
  • Publication number: 20240057317
    Abstract: A variety of applications can include apparatus having a recessed channel FinFET. The recessed channel FinFET can include one or more fin structures between the source region and the drain region, where the one or more fin structures are recessed from a top level of the source region and from a top level of the drain region. The recessed channel FinFET can include a gate recessed from the top level of a source region and a drain region, where the gate can be separated from tip regions of the fin structures by a gate dielectric defining a channel between the source region and the drain region. Recessed channel FinFETs can be structured in a periphery to an array of a memory device and can be fabricated in a process merged with forming access lines to the array.
    Type: Application
    Filed: August 12, 2022
    Publication date: February 15, 2024
    Inventors: Sangmin Hwang, Si-Woo Lee
  • Patent number: 11903183
    Abstract: Systems, methods, and apparatus including conductive line contact regions having multiple multi-direction conductive lines and staircase conductive line contact structures for semiconductor devices. One memory device comprises arrays of vertically stacked memory cells, having multiple multi-direction conductive lines arrays of vertically stacked memory cells, including a vertical stack of layers formed from repeating iterations of a group of layers, the group of layers comprising: a first dielectric material layer, a semiconductor material layer, and a second dielectric material layer, the second dielectric material layer having a conductive line formed in a horizontal plane therein, and the vertical stack of layers having multiple multi-direction conductive lines in an interconnection region with a first portion of the interconnection region formed in an array region and a second portion formed in a conductive line contact region that is spaced from the array region.
    Type: Grant
    Filed: October 1, 2020
    Date of Patent: February 13, 2024
    Assignee: Micron Technology, Inc.
    Inventors: Byung Yoon Kim, Sheng Wei Yang, Si-Woo Lee, Mark Zaleski
  • Publication number: 20240038588
    Abstract: A method of forming a microelectronic device comprises forming interlayer dielectric material over a base structure comprising semiconductive structures separated from one another by insulative structures. Sacrificial line structures separated from one another by trenches are formed over the interlayer dielectric material. The sacrificial line structures horizontally overlap some of the semiconductive structures, and the trenches horizontally overlap some other of the semiconductive structures. Plug structures are formed within horizontal areas of the trenches and extend through the interlayer dielectric material and into the some other of the semiconductive structures. The sacrificial line structures are replaced with additional trenches. Conductive contact structures are formed within horizontal areas of the additional trenches and extend through the interlayer dielectric material and into the some of the semiconductive structures.
    Type: Application
    Filed: July 27, 2022
    Publication date: February 1, 2024
    Inventors: Terrence B. McDaniel, Vinay Nair, Russell A. Benson, Christopher W. Petz, Si-Woo Lee, Silvia Borsari, Ping Chieh Chiang, Luca Fumagalli
  • Patent number: 11869803
    Abstract: Systems, methods, and apparatus are provided for single crystalline silicon stack formation and bonding to a complimentary metal oxide semiconductor (CMOS) wafer for formation of vertical three dimensional (3D) memory. An example method for forming arrays of vertically stacked layers for formation of memory cells includes providing a silicon substrate, forming a layer of single crystal silicon germanium onto a surface of the substrate, epitaxially growing the silicon germanium to form a thicker silicon germanium layer, forming a layer of single crystal silicon onto a surface of the silicon germanium, epitaxially growing the silicon germanium to form a thicker silicon layer, and forming, in repeating iterations, layers of silicon germanium and silicon to form a vertical stack of alternating silicon and silicon germanium layers.
    Type: Grant
    Filed: May 20, 2022
    Date of Patent: January 9, 2024
    Assignee: Micron Technology, Inc.
    Inventors: Si-Woo Lee, Byung Yoon Kim
  • Publication number: 20240006478
    Abstract: An example apparatus includes a first source/drain region and a second source/drain region formed in a substrate to form an active area of the apparatus. The first source/drain region and the second source/drain region are separated by a channel. The apparatus includes a gate opposing the channel. A sense line is coupled to the first source/drain region and a storage node is coupled to the second source/drain region. An isolation trench is adjacent to the active area. The trench includes a dielectric material with a conductive bias opposing the conductive bias of the channel in the active area.
    Type: Application
    Filed: September 18, 2023
    Publication date: January 4, 2024
    Inventors: Kamal M. Karda, Haitao Liu, Si-Woo Lee, Fatma Arzum Simsek-Ege, Deepak Chandra Pandey, Chandra V. Mouli, John A. Smythe, III
  • Patent number: 11849573
    Abstract: Systems, methods and apparatus are provided for an array of vertically stacked memory cells having a bottom electrode contact for an array of vertically stacked memory cells. The bottom electrode contact is formed in a periphery region. The bottom electrode contact is electrically coupled to a number of bottom electrodes of capacitors that are also formed in the periphery region.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: December 19, 2023
    Assignee: Micron Technology, Inc.
    Inventors: Yuichi Yokoyama, Si-Woo Lee
  • Publication number: 20230397390
    Abstract: Systems, methods and apparatus are provided for an array of vertically stacked memory cells having horizontally oriented access devices and storage nodes formed in tiers. And, more particularly, to multiple, alternating epitaxially grown silicon germanium (SiGe) and single crystalline silicon (Si) in different thicknesses to form tiers in which to form the horizontal access devices in vertical three dimensional (3D) memory. The horizontally oriented access devices can have a first source/drain regions and a second source drain regions separated by epitaxially grown, single crystalline silicon (Si) channel regions. Horizontally oriented access lines can connect to gate all around (GAA) structures opposing the channel regions. Vertical digit lines coupled to the first source/drain regions.
    Type: Application
    Filed: August 15, 2022
    Publication date: December 7, 2023
    Inventors: David K. Hwang, John F. Kaeding, Matthew S. Thorum, Yuanzhi Ma, Scott E. Sills, Si-Woo Lee, Yoshitaka Nakamura, Glen H. Walters
  • Publication number: 20230397391
    Abstract: Systems, methods and apparatus are provided for an array of vertically stacked memory cells having horizontally oriented access devices and storage nodes. The horizontally oriented access devices having a first source/drain regions and a second source drain regions separated by epitaxially grown, single crystalline silicon (Si) channel regions. A support structure is provided to the epitaxially grown, single crystalline Si. Horizontally oriented access lines connect to gates opposing the channel regions formed fully around every surface of the channel region as gate all around (GAA) structures separated from the channel regions by gate dielectrics. The memory cells have horizontally oriented storage nodes coupled to the second source/drain regions and vertical digit lines coupled to the first source/drain regions.
    Type: Application
    Filed: August 15, 2022
    Publication date: December 7, 2023
    Inventors: Si-Woo Lee, Scott E. Sills, David K. Hwang, Yoshitaka Nakamura, Yuanzhi Ma, Glen H. Walters
  • Publication number: 20230397402
    Abstract: A microelectronic device comprises vertical stacks of memory cells, each of the vertical stacks of memory cells comprising a vertical stack of access devices, a vertical stack of capacitors horizontally neighboring the vertical stack of access devices, and a conductive pillar structure in contact with the vertical stack of access devices. The microelectronic device further comprises transistor structures vertically overlying the vertical stacks of memory cells and comprising semiconductive material, and a protective liner material horizontally intervening between the semiconductive material and the conductive pillar structure of each of the vertical stacks of memory cells. Related methods are also described.
    Type: Application
    Filed: November 10, 2022
    Publication date: December 7, 2023
    Inventor: Si-Woo Lee