Patents by Inventor Ruilong Xie

Ruilong Xie 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: 11963456
    Abstract: Embodiments of present invention provide a method of improving yield of making MRAM arrays. More specifically, the method includes receiving an MRAM array; identifying a weak MRAM cell from the MRAM array wherein the weak MRAM cell includes an access transistor; and modifying the access transistor. In one embodiment, modifying the access transistor includes performing a hot carrier injection into a gate dielectric layer of the access transistor.
    Type: Grant
    Filed: April 12, 2022
    Date of Patent: April 16, 2024
    Assignee: International Business Machines Corporation
    Inventors: Dimitri Houssameddine, Kangguo Cheng, Julien Frougier, Ruilong Xie
  • Patent number: 11963469
    Abstract: A phase change memory (PCM) cell comprising a substrate a first electrode located on the substrate. A phase change material layer located adjacent to the first electrode, wherein a first side of the phase change material layer is in direct contact with the first electrode. A second electrode located adjacent to phase change material layer, wherein the second electrode is in direct contact with a second side of the phase change material layer, wherein the first side and the second side are different sides of the phase change material layer. An airgap is located directly above the phase change material layer, wherein the airgap provides space for the phase change material to expand or restrict.
    Type: Grant
    Filed: May 15, 2023
    Date of Patent: April 16, 2024
    Assignee: International Business Machines Corporation
    Inventors: Kangguo Cheng, Ruilong Xie, Carl Radens, Juntao Li
  • Patent number: 11961544
    Abstract: Embodiments of the invention include a method for fabricating a magnetoresistive random-access memory (MRAM) structure and the resulting structure. A first type of metal is formed on an interlayer dielectric layer with a plurality of embedded contacts, where the first type of metal exhibits spin Hall effect (SHE) properties. At least one spin-orbit torque (SOT) MRAM cell is formed on the first type of metal. One or more recesses surrounding the at least one SOT-MRAM cell are created by recessing exposed portions of the first type of metal. A second type of metal is formed in the one or more recesses, where the second type of metal has lower resistivity than the first type of metal.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: April 16, 2024
    Assignee: International Business Machines Corporation
    Inventors: Julien Frougier, Dimitri Houssameddine, Ruilong Xie, Kangguo Cheng
  • Publication number: 20240120372
    Abstract: A semiconductor structure includes a shallow trench isolation region disposed within a semiconductor substrate, and a conductive spacer disposed within the shallow trench isolation region.
    Type: Application
    Filed: October 10, 2022
    Publication date: April 11, 2024
    Inventors: Koichi Motoyama, Ruilong Xie, Kisik Choi, Chih-Chao Yang
  • Publication number: 20240121933
    Abstract: A semiconductor structure is presented including a bottom field effect transistor (FET) including a plurality of bottom source/drain (S/D) epi regions, a top FET including a plurality of top S/D epi regions, a bonding dielectric layer disposed directly between the bottom FET and the top FET, and a node contact advantageously extending from a bottom S/D epi region of the plurality of bottom S/D epi regions of the bottom FET through the bonding dielectric layer and into the top FET. The bottom FET includes an inverter gate. The top FET electrically connects to back-end-of-line (BEOL) components and the bottom FET electrically connects to a backside power delivery network (BSPDN).
    Type: Application
    Filed: October 5, 2022
    Publication date: April 11, 2024
    Inventors: Gen Tsutsui, Shogo Mochizuki, Ruilong Xie
  • Publication number: 20240120369
    Abstract: A semiconductor structure includes a capacitor structure at least partially disposed in a trench of an interlayer dielectric layer. The capacitor structure includes first and second electrode layers separated by a dielectric layer. A top surface of the first electrode layer is below a top surface of the second electrode layer and the dielectric layer. A spacer is disposed on the first electrode layer and a contact is disposed in the trench and connected to the second electrode layer and the spacer.
    Type: Application
    Filed: October 7, 2022
    Publication date: April 11, 2024
    Inventors: Ruilong Xie, Julien Frougier, Kangguo Cheng, Chanro Park, Min Gyu Sung
  • Publication number: 20240120256
    Abstract: A semiconductor device includes backside power rails located between N channel field effect transistor to N channel field effect transistor spaces, and between at least one P channel field effect transistor to P channel field effect transistor space; and backside local signal lines located between the backside power rails.
    Type: Application
    Filed: October 6, 2022
    Publication date: April 11, 2024
    Inventors: Albert M. Chu, Lawrence A. Clevenger, Nicholas Anthony Lanzillo, Huai Huang, Ruilong Xie
  • Publication number: 20240121966
    Abstract: A memory device includes a substrate and vertically stacked ferroelectric capacitors formed on the substrate. A first ferroelectric capacitor has a different capacitive output than a second ferroelectric capacitor when a constant voltage is applied. First and second electrodes are in electrical contact with the vertically stacked ferroelectric capacitors. In some instances, a first capacitor plate in the first ferroelectric capacitor and a second capacitor plate in the second ferroelectric capacitor have different thicknesses. The different thicknesses allow the capacitive output for each capacitor to produce different electric field outputs. Accordingly, a combination of different output signals can be produced based on different threshold voltage levels for each capacitor contributing to the output.
    Type: Application
    Filed: October 6, 2022
    Publication date: April 11, 2024
    Inventors: Julien Frougier, Kangguo Cheng, Ruilong Xie, Chanro Park, Min Gyu Sung
  • Publication number: 20240120380
    Abstract: Embodiments of present invention provide a semiconductor structure. The semiconductor structure includes a first nanosheet transistor having a first source/drain (S/D) region; and a second nanosheet transistor on top of the first nanosheet transistor, the second nanosheet transistor having a second S/D region, the second S/D region being separated from the first S/D region by a dielectric cap layer, wherein the first S/D region of the first nanosheet transistor has a substantially flat top surface adjacent to the dielectric cap layer and has at least one vertical edge that is substantially aligned with an edge of the dielectric cap layer. A method of manufacturing the semiconductor structure is also provided.
    Type: Application
    Filed: October 10, 2022
    Publication date: April 11, 2024
    Inventors: Chen Zhang, Ruilong Xie, Shogo Mochizuki, Tenko Yamashita
  • Publication number: 20240120271
    Abstract: A semiconductor structure is presented including a first level of interconnect wiring, a second level of interconnect wiring disposed above the first level of interconnect wiring, a third level of interconnect wiring disposed above the second level of interconnect wiring, and a skip via extending from the third level of interconnect wiring to the first level of interconnect wiring such that a sidewall of the skip via maintains electrical contact with the second level of interconnect wiring. A contact area between the sidewall of the skip via and the second level of interconnect wiring is greater than a contact area between a bottom portion of the skip via and a top portion of the first level of interconnect wiring.
    Type: Application
    Filed: October 11, 2022
    Publication date: April 11, 2024
    Inventors: Nicholas Anthony Lanzillo, Koichi Motoyama, Ruilong Xie, Lawrence A. Clevenger
  • Patent number: 11955526
    Abstract: An apparatus comprising a substrate and a thin gate oxide nanosheet device located on the substrate, having a first plurality of nanosheet layers, wherein each of the first plurality of nanosheet layers has a first thickness located at the center of the nanosheet. A thick gate oxide nanosheet device located on the substrate, having a second plurality of nanosheet layers, wherein each of the second plurality of nanosheet layers has a second thickness and wherein the first thickness is less than the second thickness.
    Type: Grant
    Filed: June 15, 2021
    Date of Patent: April 9, 2024
    Assignee: International Business Machines Corporation
    Inventors: Ruilong Xie, Kangguo Cheng, Julien Frougier, Chanro Park, Veeraraghavan S. Basker
  • Patent number: 11955369
    Abstract: An approach for creating a buried local interconnect around a DDB (double diffusion break) to reduce parasitic capacitance on a semiconductor device is disclosed. The approach utilizes a metal, as the local interconnect, buried in a cavity around the DDB region of a semiconductor substrate. The metal is disposed by two dielectric layers and the substrate. The two dielectric layers are recessed beneath two gate spacers. The buried local interconnect is recessed into the cavity where the top surface of the interconnect is situated below the top surface of the surrounding S/D (source/drain) epi (epitaxy). The metal of the local interconnect can be made from W, Ru or Co.
    Type: Grant
    Filed: June 8, 2021
    Date of Patent: April 9, 2024
    Assignee: International Business Machines Corporation
    Inventors: Lan Yu, Chen Zhang, Huimei Zhou, Ruilong Xie
  • Publication number: 20240113013
    Abstract: A semiconductor structure comprises a first portion of an interconnect line comprising a first conducting line segment and a second conducting line segment separated by an isolating layer, and a second portion of the interconnect line comprising a third conducting line segment vertically stacked over at least a portion of the first conducting line segment and at least a portion of the second conducting line segment.
    Type: Application
    Filed: September 29, 2022
    Publication date: April 4, 2024
    Inventors: Huai Huang, Nicholas Anthony Lanzillo, Hosadurga Shobha, Ruilong Xie, Lawrence A. Clevenger
  • Publication number: 20240113021
    Abstract: A first VTFET is provided on a wafer. A second VTFET is adjacent to the first VTFET on the wafer. A backside power deliver network is on a backside of the wafer. A shared frontside contact is on a frontside of the wafer. The shared frontside contact is connected to a first top source/drain region of the first VTFET, a second top source/drain region of the second VTFET, and the backside power delivery network.
    Type: Application
    Filed: September 29, 2022
    Publication date: April 4, 2024
    Inventors: Brent A. Anderson, Albert M. Chu, Ruilong Xie, Junli Wang
  • Publication number: 20240113176
    Abstract: A semiconductor device includes a field effect transistor (FET). The FET includes a gate and a first source or drain (S/D) region. A frontside S/D contact may be connected to and extend vertically upward from a top surface of the first S/D region. The FET further includes a second S/D region. The second S/D region includes a conduit liner and an inner column internal to the conduit liner that extends below a bottom surface of the wraparound gate. A backside S/D contact may be connected to and extend vertically downward from a bottom surface of the second S/D region.
    Type: Application
    Filed: October 4, 2022
    Publication date: April 4, 2024
    Inventors: Ruilong Xie, Lawrence A. Clevenger, Brent A. Anderson, Kisik Choi, Su Chen Fan, Shogo Mochizuki, SON NGUYEN
  • Publication number: 20240113125
    Abstract: A semiconductor chip device includes a substrate with a back end of line layer and a backside power delivery network. An input power line is electrically coupled to the backside power delivery network. Dummy transistors are positioned in a circuit with analog or digital circuit elements. A power gating transistor is positioned in the circuit between the dummy transistors and the analog or digital circuit elements. Power from the power input line is provided from the backside power delivery network, through the dummy transistors, and controlled by the power gating transistor for transfer to the analog or digital circuit elements. The device uses a backside delivery of power to the area of the dummy transistors to transfer power into the analog or digital circuit elements, which leaves more of the front side footprint for functional devices.
    Type: Application
    Filed: September 30, 2022
    Publication date: April 4, 2024
    Inventors: Tao Li, Ruilong Xie, Kangguo Cheng
  • Publication number: 20240113162
    Abstract: Embodiments of the present invention are directed to monolithic stacked field effect transistor (SFET) processing methods and resulting structures having dual middle dielectric isolation (MDI) separation. In a non-limiting embodiment of the invention, a first nanosheet is formed and a second nanosheet is vertically stacked over the first nanosheet. A gate is formed around a channel region of the first nanosheet and a channel region of the second nanosheet and a middle dielectric isolation structure is formed between the first nanosheet and the second nanosheet. The middle dielectric isolation structure includes a first middle dielectric isolation layer and a second middle dielectric isolation layer vertically stacked over the first middle dielectric isolation layer. A portion of the gate extends between the first middle dielectric isolation layer and the second middle dielectric isolation layer in the middle dielectric isolation structure.
    Type: Application
    Filed: September 29, 2022
    Publication date: April 4, 2024
    Inventors: Jingyun Zhang, Ruilong Xie, Julien Frougier, Ruqiang Bao, Prabudhya Roy Chowdhury
  • Publication number: 20240113023
    Abstract: A semiconductor device includes a backside power line located under a p-channel field effect transistor region and an n-channel field effect transistor region; a backside signal line located between the p-channel field effect transistor region and the n-channel field effect transistor region; and an airgap between the backside power line and the backside signal line.
    Type: Application
    Filed: September 29, 2022
    Publication date: April 4, 2024
    Inventors: Tao Li, Ruilong Xie, Nicolas Jean Loubet, Julien Frougier
  • Publication number: 20240113213
    Abstract: A semiconductor device including a channel region of stacked semiconductor layers arranged in at least one cluster, wherein each cluster includes a pair of the semiconductor sheets with a dielectric material present therebetween. The semiconductor device further includes a gate structure encapsulating the channel region of stacked semiconductor sheets arranged in clusters. Source and drain regions are present on opposing sides of the channel region.
    Type: Application
    Filed: September 30, 2022
    Publication date: April 4, 2024
    Inventors: Julien Frougier, Ruilong Xie, Kangguo Cheng, Andrew M. Greene, Sung Dae Suk
  • Publication number: 20240113219
    Abstract: A VTFET is provided on a wafer. A backside power delivery network is on a backside of the wafer. A first backside contact is connected to a bottom source/drain region of the VTFET and a first portion of the backside power delivery network. A second backside contact is connected to top source/drain region of the VTFET and a second portion of the backside power delivery network.
    Type: Application
    Filed: September 29, 2022
    Publication date: April 4, 2024
    Inventors: Brent A. Anderson, Albert M. Chu, Nicholas Anthony Lanzillo, Ruilong Xie, Lawrence A. Clevenger, REINALDO VEGA