Patents by Inventor Ruilong Li

Ruilong Li 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: 20240186219
    Abstract: A semiconductor structure includes a first backside power rail disposed on a portion of a sidewall and a bottom surface of a backside source/drain contact, a first sidewall spacer disposed on another sidewall of the backside source/drain contact, and a backside signal line disposed on the first sidewall spacer and separated from the backside source/drain contact.
    Type: Application
    Filed: December 5, 2022
    Publication date: June 6, 2024
    Inventors: Tsung-Sheng Kang, Tao Li, Ruilong Xie, Chih-Chao Yang
  • Publication number: 20240186246
    Abstract: A microelectronic architecture including a logic device and a header gate transistor located adjacent to a first side of the logic device. The header gate transistor has a parallel orientation to the logic device, and the header gate transistor is connected to a VSS source or a VDD source. Aa footer gate transistor located adjacent to a second side of the logic device and the footer gate transistor has parallel orientation to the logic device. The first side and the second side are opposite sides of the logic device and the footer gate transistor is connected to a VSS source or a VDD source. The footer gate transistor is connected to a different source than the header gate transistor and the logic device is connected to the VSS source and the VDD source through either footer gate transistor and the header gate transistor.
    Type: Application
    Filed: December 6, 2022
    Publication date: June 6, 2024
    Inventors: Tao Li, Ruilong Xie
  • Publication number: 20240178156
    Abstract: One or more systems, devices, and/or methods of fabrication provided herein relate to nanosheet transistors with support dielectric pillars. According to one embodiment, a transistor device can comprise an active transistor fin and a support dielectric pillar located adjacent to the active transistor fin, wherein the support dielectric pillar stabilizes the active transistor fin.
    Type: Application
    Filed: November 28, 2022
    Publication date: May 30, 2024
    Inventors: Juntao Li, Min Gyu Sung, Ruilong Xie, Julien Frougier, Chanro Park
  • Publication number: 20240180047
    Abstract: An apparatus includes a substrate that has an upper face; a first electrode that is attached to the upper face of the substrate; a second electrode that is attached to the upper face of the substrate at a distance from the first electrode; and a bridge of phase-change-memory material that is attached to and lies along the upper face of the substrate between and electrically connecting the first and second electrodes. At least a portion of the bridge is thermally switchable between a low resistance solid phase and a high resistance solid phase. In some embodiments, the apparatus also includes access devices that are disposed between the electrodes and the substrate, with the bridge being electrically connected between the access devices. At least a portion of the bridge is thermally switchable between a low resistance solid phase and a high resistance solid phase.
    Type: Application
    Filed: November 30, 2022
    Publication date: May 30, 2024
    Inventors: Kangguo Cheng, Juntao Li, Julien Frougier, Ruilong Xie
  • Publication number: 20240178142
    Abstract: According to the embodiment of the present invention, a semiconductor device includes a first nanodevice comprised of a plurality of first transistors and a second nanodevice comprised of a plurality of second transistors. The first nanodevice includes a first source/drain contact. The second nanodevice includes a second source/drain contact. The second nanodevice is located adjacent to and parallel to the first nanodevice. A power bar is located between the first nanodevice and the second nanodevice. The power bar is connected to the second source/drain contact. A top surface of the power bar and the second source/drain contact are substantially in a same plane. The top surface of the power bar and the second source/drain contact are substantially a same height.
    Type: Application
    Filed: November 30, 2022
    Publication date: May 30, 2024
    Inventors: Shravana Kumar Katakam, Tao Li, Indira Seshadri, Ruilong Xie
  • Publication number: 20240178143
    Abstract: A semiconductor chip device includes an electronic components layer supported by the substrate. The electronic components layer includes a plurality of active component structures. A power rail is positioned on a back side of the electronic components layer. A buried oxide layer is positioned between the electronic components layer and the power rail. A back side metal contact is buried in the buried oxide layer. The back side metal contact bridges one of the active components in the electronic components layer to the power rail.
    Type: Application
    Filed: November 30, 2022
    Publication date: May 30, 2024
    Inventors: Tao Li, Ruilong Xie, Kisik Choi, Nicholas Anthony Lanzillo
  • Publication number: 20240166012
    Abstract: An air spring with adjustable stiffness and a vehicle air suspension system are disclosed, belonging to the technical field of vehicle shock absorption device. The air spring comprises a main body consisting of an upper sealing plate, a lower sealing plate and a main air spring bellow, wherein an air spring bellow for adjustment is arranged in the main body, the air spring bellow for adjustment divides an inner space of the main body into different regions, with a region out of the air spring bellow for adjustment being a first region and a region inside the air spring bellow for adjustment being a second region. The first region and the second region are respectively connected to a high-pressure gas source, and a gas pressure in the first region and in the second region can be individually controlled.
    Type: Application
    Filed: June 27, 2023
    Publication date: May 23, 2024
    Inventors: Amir KHAJEPOUR, Yukun Lu, Ruilong Li, Ran Zhen, Yegang Liu, Guoqiang Li
  • Publication number: 20240170313
    Abstract: A method of wafer verification for split manufacturing is provided. The method includes capturing images of one or more different wafer features during manufacturing using a fiducial marker. The method further includes comparing the images from one stage to a next stage for at least two stages of manufacturing to verify a wafer identification based on a matching of the one of more different wafer features from the one stage to the next stage.
    Type: Application
    Filed: November 22, 2022
    Publication date: May 23, 2024
    Inventors: Carl Radens, Kangguo Cheng, Juntao Li, Ruilong Xie
  • Publication number: 20240153990
    Abstract: A semiconductor device includes a nanostructure field effect transistor (FET). The FET includes a gate and a source or drain (S/D) region. The FET also includes a backside S/D contact connected to a top surface of the S/D region. The backside S/D contact includes a lateral portion upon the top surface of the S/D region. The lateral portion further laterally extends adjacent to or past the first S/D region. The backside S/D contact includes a vertical portion that extends vertically downward from the lateral portion below the bottom surface of the substrate layer. The FET also includes a backside S/D mushroom that extends vertically downward from the vertical portion.
    Type: Application
    Filed: November 9, 2022
    Publication date: May 9, 2024
    Inventors: Chanro Park, Ruilong Xie, Julien Frougier, Min Gyu Sung, Juntao Li
  • Publication number: 20240154009
    Abstract: A semiconductor structure includes a source/drain region having a backside surface disposed in a backside interlayer dielectric layer, a backside contact disposed in the backside interlayer dielectric layer, wherein the backside contact is disposed on the backside surface of the source/drain region, backside sidewall spacers disposed between sidewalls of the backside interlayer dielectric layer and sidewalls of the backside contact and the backside surface of the source drain region, and a backside power rail connected to the source/drain region through the backside contact.
    Type: Application
    Filed: November 8, 2022
    Publication date: May 9, 2024
    Inventors: Tao Li, Julien Frougier, Min Gyu Sung, Ruilong Xie
  • Publication number: 20240147874
    Abstract: A device structure for a phase-change memory device is disclosed. The device structure includes a top electrode, a phase-change material that is recessed between two layers of resistive liner material, and a conductive material. The conductive material contacts the sidewall of the top electrode, the sidewall of the phase-change material, and a portion of a top surface and a bottom surface of each of the two layers of the resistive liner material. The device structure includes a heater contacting a bottom electrode and the bottom layer of the resistive liner material. The heater is in a first bilayer dielectric. A second bilayer dielectric is under the top electrode.
    Type: Application
    Filed: November 1, 2022
    Publication date: May 2, 2024
    Inventors: Guy M. Cohen, Kangguo Cheng, Juntao Li, Ruilong Xie, Julien Frougier
  • Publication number: 20240136253
    Abstract: A semiconductor device includes a backside power rail, a backside ground rail, and a backside isolation rail between the backside power rail and the backside ground rail. The backside isolation rail may provide adequate electrical isolation between the backside power rail and the backside ground rail, thereby enabling the backside power rail and the backside ground rail to be located relatively near to one another. The backside isolation rail may also cure actual electrical shorts between the backside power rail and the backside ground rail.
    Type: Application
    Filed: October 23, 2022
    Publication date: April 25, 2024
    Inventors: Nicholas Anthony Lanzillo, Lawrence A. Clevenger, Hosadurga Shobha, Ruilong Xie, Baozhen Li
  • Publication number: 20240130256
    Abstract: Embodiments of present invention provide a method of forming a phase change memory device. The method includes forming a bottom electrode on a supporting structure; forming a first blanket dielectric layer, a phase-change material layer, a second blanket dielectric layer, and a hard mask sequentially on top of the bottom electrode; forming an inner spacer in an opening in the hard mask to modify the opening; extending the opening into the second blanket dielectric layer to create an extended opening; filling the extended opening with a heating element; etching the second blanket dielectric layer, the phase-change material layer, and the first blanket dielectric layer respectively into a second dielectric layer, a phase-change element, and a first dielectric layer; forming a conductive liner surrounding the phase-change element; and forming a top electrode on top of the heating element. A structure formed thereby is also provided.
    Type: Application
    Filed: October 18, 2022
    Publication date: April 18, 2024
    Inventors: Kangguo Cheng, Juntao Li, Arthur Roy Gasasira, Ruilong Xie, Julien Frougier, Min Gyu Sung, Chanro Park
  • 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
  • Publication number: 20240112984
    Abstract: A semiconductor device includes power rails formed in a backside of a wafer. A gate of a first transistor on the wafer is connected to a power rail through a via-to-backside power rail (VBPR) gate contact. A source/drain (S/D) region of a second transistor on the wafer is connected to a power rail through a VBPR S/D contact. The VBPR gate contact partially vertically overlaps a gate cut region between the first transistor and the second transistor.
    Type: Application
    Filed: September 29, 2022
    Publication date: April 4, 2024
    Inventors: Tao Li, Liqiao Qin, Ruilong Xie, Kisik Choi
  • Publication number: 20240113193
    Abstract: A semiconductor structure includes a first source-drain region; a second source-drain region; at least one channel region coupling the first and second source-drain regions; and a gate adjacent the at least one channel region. A bottom dielectric isolation region is located inward of the gate. First and second bottom silicon regions are respectively located inward of the first and second source-drain regions. A back side contact projects through the second bottom silicon region into the second source-drain region.
    Type: Application
    Filed: September 30, 2022
    Publication date: April 4, 2024
    Inventors: Tao Li, Shogo Mochizuki, Kisik Choi, Ruilong Xie
  • 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: 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: 20240105554
    Abstract: A semiconductor structure includes a source/drain region; a frontside source/drain contact disposed on the source/drain region, a via-to-backside power rail disposed on the frontside source/drain contact and on a portion of the source/drain region, and a backside power rail connected to the via-to-backside power rail.
    Type: Application
    Filed: September 22, 2022
    Publication date: March 28, 2024
    Inventors: Tao Li, Liqiao Qin, Devika Sarkar Grant, Nikhil Jain, Prabudhya Roy Chowdhury, Sagarika Mukesh, Kisik Choi, Ruilong Xie
  • Publication number: 20240105607
    Abstract: An approach to form a semiconductor structure with a plurality of buried power rails in a semiconductor substrate where at least one buried power rail extends below the backside of the semiconductor substrate. The semiconductor structure provides at least one portion of the first metal layer of the backside power delivery network that surrounds a bottom portion of the buried power rail below the backside of the semiconductor substrate. The bottom portion of the buried power rail is in direct contact with the portion of the first metal layer of the backside power delivery network where the buried power rail and the first metal layer are composed of the same conductive material. The semiconductor structure includes a portion of an interlayer dielectric material isolating the first metal layer of the backside power distribution network from the backside of the semiconductor substrate.
    Type: Application
    Filed: September 26, 2022
    Publication date: March 28, 2024
    Inventors: SOMNATH GHOSH, FEE LI LIE, Ruilong Xie, Kisik Choi