Patents by Inventor Geng Wang

Geng Wang 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: 10090293
    Abstract: An integrated device is provided. The integrated device includes a substrate having a doped upper surface section and an insulator to define first and second substrate regions on opposite sides thereof. Vertical transistors are operably arranged on the doped upper surface section at the first substrate region. P-I-N diodes are operably arranged on the doped upper surface section at the second substrate region.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: October 2, 2018
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kangguo Cheng, Juntao Li, Geng Wang, Qintao Zhang
  • Patent number: 10079280
    Abstract: After forming a first-side epitaxial semiconductor region and a second-side epitaxial semiconductor region on recessed surfaces of a semiconductor portion that are not covered by a gate structure, at least one dielectric layer is formed to cover the first-side and the second-side epitaxial semiconductor regions and the gate structure. A second-side contact opening is formed within the at least one dielectric layer to expose an entirety of the second-side epitaxial semiconductor region. The exposed second-side epitaxial semiconductor region can be replaced by a new second-side epitaxial semiconductor region having a composition different from the first-side epitaxial semiconductor region or can be doped by additional dopants, thus creating an asymmetric first-side epitaxial semiconductor region and a second-side epitaxial semiconductor region. Each of the first-side epitaxial semiconductor region and the second-side epitaxial semiconducting region can function as either a source or a drain for a transistor.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: September 18, 2018
    Assignee: International Business Machines Corporation
    Inventors: Kangguo Cheng, Joseph Ervin, Juntao Li, Chengwen Pei, Geng Wang
  • Publication number: 20180261593
    Abstract: A semiconductor device includes a substrate and a field effect transistor (FET) arranged on the substrate. The FET includes a gate positioned on the substrate. The gate includes a nanosheet extending through a channel region of the gate. The FET includes a pair of source/drains arranged on opposing sides of the gate. The semiconductor device further includes a bipolar junction transistor (BJT) arranged adjacent to the FET on the substrate. The BJT includes an emitter and a collector. The BJT includes a nanosheet including a semiconductor material extending from the emitter to the collector, with a doped semiconductor material arranged above and below the nanosheet.
    Type: Application
    Filed: March 23, 2018
    Publication date: September 13, 2018
    Inventors: Kangguo Cheng, Juntao Li, Geng Wang, Qintao Zhang
  • Publication number: 20180261376
    Abstract: An inductor device includes a substrate, and a plurality of first trenches including a first metal on the substrate to form first metal layers. The first metal layers are arranged substantially parallel to the substrate. A plurality of second trenches including a second metal is over the first metal layers and includes first portions and second portions. The first portions are substantially parallel to and interdigitate the first metal layers. The second portions are substantially perpendicular to the first portions, extend from ends of the first portions, and are oriented in opposite directions such that the second portions extend over ends of adjacent first metal layers. A plurality of vias connects the first metal layers to the second metal layers. A plurality of magnetic trenches is over the first metal layers, under the second metal layers, and substantially parallel to the second portions of the plurality of second trenches.
    Type: Application
    Filed: March 10, 2017
    Publication date: September 13, 2018
    Inventors: Kangguo Cheng, Juntao Li, Geng Wang, Qintao Zhang
  • Publication number: 20180219064
    Abstract: Nanosheet FET devices having substrate isolation layers are provided, as well as methods for fabricating nanosheet FET devices with substrate isolation layers. For example, a semiconductor device includes a nanosheet stack structure formed on a substrate, which includes a rare earth oxide (REO) layer formed on the substrate, and a semiconductor channel layer disposed adjacent to the REO layer. A metal gate structure is formed over the nanosheet stack structure, and a gate insulating spacer is disposed on sidewalls of the metal gate structure, wherein end portions of the semiconductor channel layer are exposed through the gate insulating spacer. Source/drain regions are formed in contact with the exposed end portions of the semiconductor channel layer. A portion of the metal gate structure is disposed between the semiconductor channel layer and the REO layer, wherein the REO layer isolates the metal gate structure from the substrate.
    Type: Application
    Filed: October 20, 2017
    Publication date: August 2, 2018
    Inventors: Kangguo Cheng, Juntao Li, Geng Wang, Qintao Zhang
  • Patent number: 10032909
    Abstract: A method of forming a spacer for a vertical transistor is provided. The method includes forming a fin structure that includes a fin on a semiconductor substrate, forming a source junction or a drain junction at an upper surface of the semiconductor substrate and at a base of the fin and epitaxially growing a rare earth oxide (REO) spacer to have a substantially uniform thickness along respective upper surfaces of the source or drain junction and on opposite sides of the fin structure.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: July 24, 2018
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kangguo Cheng, Juntao Li, Geng Wang, Qintao Zhang
  • Publication number: 20180204796
    Abstract: Various embodiments include three-dimensional (3D) integrated circuit (IC) structures and methods of forming such structures. In some cases, a 3D IC structure includes: a substrate; a first set of transistors overlying the substrate; a first inter-level dielectric (ILD) overlying the first set of transistors and the substrate; a dielectric overlying the first ILD; a semiconductor layer overlying the dielectric; a second set of transistors overlying the semiconductor layer; a capacitor embedded within the dielectric; and a first contact extending through the semiconductor layer and the dielectric to contact one layer of the capacitor, and a second contact extending through the semiconductor layer and the dielectric to contact a second, distinct layer of the capacitor.
    Type: Application
    Filed: January 18, 2017
    Publication date: July 19, 2018
    Inventors: Geng Wang, Kangguo Cheng, Chengwen Pei, Juntao Li
  • Publication number: 20180197785
    Abstract: Embodiments are directed to a method and resulting structures for forming thin and thick gate dielectric nanosheet transistors on the same chip. A first nanosheet stack having a first sacrificial layer between a first nanosheet and a second nanosheet is formed on a substrate. A second nanosheet stack having a first sacrificial layer between a first nanosheet and a second nanosheet is formed on the substrate. The first nanosheet of the first nanosheet stack is doped and concurrently removed with the first sacrificial layer of the first nanosheet stack and the first sacrificial layer of the second nanosheet stack.
    Type: Application
    Filed: December 19, 2017
    Publication date: July 12, 2018
    Inventors: Kangguo Cheng, Juntao Li, Geng Wang, Qintao Zhang
  • Publication number: 20180197784
    Abstract: Embodiments are directed to a method and resulting structures for forming thin and thick gate dielectric nanosheet transistors on the same chip. A first nanosheet stack having a first sacrificial layer between a first nanosheet and a second nanosheet is formed on a substrate. A second nanosheet stack having a first sacrificial layer between a first nanosheet and a second nanosheet is formed on the substrate. The first nanosheet of the first nanosheet stack is doped and concurrently removed with the first sacrificial layer of the first nanosheet stack and the first sacrificial layer of the second nanosheet stack.
    Type: Application
    Filed: December 19, 2017
    Publication date: July 12, 2018
    Inventors: Kangguo Cheng, Juntao Li, Geng Wang, Qintao Zhang
  • Publication number: 20180158949
    Abstract: Embodiments of the present invention provide systems and methods for generating oxide spacers in a vertical field transistor. The fin of the channel facilitates the electrical current flowing between the source terminal and the drain terminal. By employing sacrificial spacers, implanted oxidation enhancement species on a silicon surface, an implanted oxidation enhancement species can be oxidized to oxide spacers.
    Type: Application
    Filed: February 21, 2018
    Publication date: June 7, 2018
    Inventors: Kangguo Cheng, Juntao Li, Geng Wang
  • Publication number: 20180158967
    Abstract: The present disclosure relates to semiconductor structures and, more particularly, to electrical and optical via connections on a same chip and methods of manufacture. The structure includes an optical through substrate via (TSV) comprising an optical material filling the TSV. The structure further includes an electrical TSV which includes a liner of the optical material and a conductive material filling remaining portions of the electrical TSV.
    Type: Application
    Filed: February 2, 2018
    Publication date: June 7, 2018
    Inventors: Juntao LI, Kangguo CHENG, Chengwen PEI, Geng WANG, Joseph ERVIN
  • Patent number: 9991254
    Abstract: A semiconductor device includes a substrate and a field effect transistor (FET) arranged on the substrate. The FET includes a gate positioned on the substrate. The gate includes a nanosheet extending through a channel region of the gate. The FET includes a pair of source/drains arranged on opposing sides of the gate. The semiconductor device further includes a bipolar junction transistor (BJT) arranged adjacent to the FET on the substrate. The BJT includes an emitter and a collector. The BJT includes a nanosheet including a semiconductor material extending from the emitter to the collector, with a doped semiconductor material arranged above and below the nanosheet.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: June 5, 2018
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kangguo Cheng, Juntao Li, Geng Wang, Qintao Zhang
  • Publication number: 20180151727
    Abstract: Embodiments of the present invention provide systems and methods for generating oxide spacers in a vertical field transistor. The fin of the channel facilitates the electrical current flowing between the source terminal and the drain terminal. By employing sacrificial spacers, implanted oxidation enhancement species on a silicon surface, an implanted oxidation enhancement species can be oxidized to oxide spacers.
    Type: Application
    Filed: November 30, 2016
    Publication date: May 31, 2018
    Inventors: Kangguo Cheng, Juntao Li, Geng Wang
  • Publication number: 20180138175
    Abstract: Methods of forming semiconductor devices include forming structures having an inner vertical layer and spacers on sidewalls of the inner vertical layer on a first region and a second region of a gate layer. The inner vertical layer is etched in only the first region to expose inner sidewalls of the spacers in the first region. The gate layer is etched using the remaining inner vertical layers and the spacers as a mask to form first gates in the first region and second gates in the second region. The first gates have a smaller gate length than a gate length of the second gates.
    Type: Application
    Filed: December 21, 2017
    Publication date: May 17, 2018
    Inventors: Kangguo Cheng, Juntao Li, Geng Wang, Qintao Zhang
  • Publication number: 20180102359
    Abstract: Embodiments are directed to a method for forming a semiconductor structure by depositing a stack of alternating layers of two materials over a substrate and defining field-effect transistor (FET) and diode regions. The method further includes depositing a mask, where the mask covers only the FET region while leaving the diode region uncovered. The method further includes doping the material in the diode region with a dopant, implanting epitaxial material with another dopant to form PN junctions, stripping the mask from the structure, forming a metal gate conductor over the FET region, and depositing a metal over the substrate to create terminals.
    Type: Application
    Filed: November 7, 2017
    Publication date: April 12, 2018
    Inventors: Kangguo Cheng, Juntao Li, Geng Wang, Qintao Zhang
  • Publication number: 20180096881
    Abstract: A semiconductor device includes a buried epitaxially grown substrate and a silicon on insulator (SOI) layer. The device also includes a buried oxide (BOX) layer between the buried epitaxially grown substrate and the SOI layer, an isolation trench having first width (w1), a contact trench having a second width (w2) and a capacitive trench having a third width (w3). Methods are described that allow the formation of the trenches in a normal process flow.
    Type: Application
    Filed: October 3, 2017
    Publication date: April 5, 2018
    Inventors: Kangguo Cheng, Juntao Li, Geng Wang, Qintao Zhang
  • Patent number: 9935014
    Abstract: Embodiments are directed to a method and resulting structures for forming thin and thick gate dielectric nanosheet transistors on the same chip. A first nanosheet stack having a first sacrificial layer between a first nanosheet and a second nanosheet is formed on a substrate. A second nanosheet stack having a first sacrificial layer between a first nanosheet and a second nanosheet is formed on the substrate. The first nanosheet of the first nanosheet stack is doped and concurrently removed with the first sacrificial layer of the first nanosheet stack and the first sacrificial layer of the second nanosheet stack.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: April 3, 2018
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kangguo Cheng, Juntao Li, Geng Wang, Qintao Zhang
  • Publication number: 20180090605
    Abstract: A method of manufacturing an integrated circuit is provided. According to the method, a layered fin including a plurality of sacrificial layers and semiconductor layers wherein two adjacent semiconductor layers are separated by the sacrificial layer is provided on a semiconductor substrate. A gate over the layered fin and a spacer surrounding a sidewall of the gate are then formed. The sacrificial layers are subsequently removed to provide a structure in which two adjacent semiconductor layers are separated by a gap. The method further includes forming an insulator in the gap and forming source and drain regions located on the layered fin. The insulator includes a high-K dielectric material surrounded by a low-K dielectric material, both of which are in contact with the two adjacent semiconductor layers.
    Type: Application
    Filed: May 30, 2017
    Publication date: March 29, 2018
    Inventors: KANGGUO CHENG, JUNTAO LI, GENG WANG, QINTAO ZHANG
  • Publication number: 20180090488
    Abstract: Embodiments are directed to devices and methods for integrating laterally diffused metal oxide semiconductor (LDMOS) technology on vertical field effect transistor (VFET) technology, which enables VFET applications to be broadened to include power amplifiers. By providing a combined asymmetric underlapped drain, high current, low subthreshold slope and LDMOS lightly doped drain, high drain resistance and high drain voltage are enabled.
    Type: Application
    Filed: August 10, 2017
    Publication date: March 29, 2018
    Inventors: Kangguo Cheng, Juntao Li, Geng Wang, Qintao Zhang
  • Patent number: 9929290
    Abstract: The present disclosure relates to semiconductor structures and, more particularly, to electrical and optical via connections on a same chip and methods of manufacture. The structure includes an optical through substrate via (TSV) comprising an optical material filling the TSV. The structure further includes an electrical TSV which includes a liner of the optical material and a conductive material filling remaining portions of the electrical TSV.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: March 27, 2018
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Juntao Li, Kangguo Cheng, Chengwen Pei, Geng Wang, Joseph Ervin