Patents by Inventor Shawn George Thomas

Shawn George Thomas 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: 20190096745
    Abstract: A semiconductor on insulator multilayer structure is provided. The multilayer comprises a high resistivity single crystal semiconductor handle substrate, a textured oxide, nitride, or oxynitride layer, a polycrystalline silicon layer, a dielectric layer, and a single crystal semiconductor device layer. The multilayer structure is prepared in a manner that reduces wafer bow.
    Type: Application
    Filed: November 12, 2018
    Publication date: March 28, 2019
    Inventors: Gang Wang, Jeffrey L. Libbert, Shawn George Thomas, Igor Peidous
  • Publication number: 20180350661
    Abstract: A high resistivity single crystal semiconductor handle structure for use in the manufacture of SOI structure is provided. The handle structure comprises an intermediate semiconductor layer between the handle substrate and the buried oxide layer. The intermediate semiconductor layer comprises a polycrystalline, amorphous, nanocrystalline, or monocrystalline structure and comprises a material selected from the group consisting of Si1-xGex, Si1-xCx, Si1-x-yGexSny, Si1-x-y-zGexSnyCz, Ge1-xSnx, group IIIA-nitrides, semiconductor oxides, and any combination thereof.
    Type: Application
    Filed: August 8, 2018
    Publication date: December 6, 2018
    Inventors: Igor Peidous, Srikanth Kommu, Gang Wang, Shawn George Thomas
  • Patent number: 10145011
    Abstract: A system for depositing a layer on a substrate includes a processing chamber including a gas inlet, a plurality of gas flow controllers connected in fluid communication with a gas supply source, a gas distribution plate disposed between the plurality of gas flow controllers and the gas inlet, and a gas injection cap connected in fluid communication between the plurality of gas flow controllers and the gas distribution plate. The gas distribution plate defines a plurality of holes, and the gas injection cap defines a plurality of gas flow passages, each extending from an inlet connected to one of the gas flow controllers to an outlet connected in fluid communication with at least one of the holes in the gas distribution plate. Each of the gas flow controllers is disposed proximate to the gas injection cap.
    Type: Grant
    Filed: March 29, 2016
    Date of Patent: December 4, 2018
    Assignee: GlobalWafers Co., Ltd.
    Inventors: Arash Abedijaberi, John A. Pitney, Shawn George Thomas
  • Publication number: 20180294183
    Abstract: The disclosed method is suitable for producing a SiGe-on-insulator structure. According to some embodiments of the method, a layer comprising SiGe is deposited on silicon-on-insulator substrate comprising an ultra-thin silicon top layer. In some embodiments, the layer comprising SiGe is deposited by epitaxial deposition. In some embodiments, the SiGe epitaxial layer is high quality since it is produced by engineering the strain relaxation at the Si/buried oxide interface. In some embodiments, the method accomplishes elastic strain relaxation of SiGe grown on a few monolayer thick Si layer that is weakly bonded to the underline oxide.
    Type: Application
    Filed: May 18, 2016
    Publication date: October 11, 2018
    Inventors: Gang Wang, Shawn George Thomas
  • Publication number: 20180294182
    Abstract: The disclosed method is suitable for producing a semiconductor-on-insulator structure, such as a Ge(Si)-on-insulator structure or a Ge-on-insulator structure. According to the method, a multilayer comprising alternating pairs of layers, comprising a layer of silicon and a layer of germanium optionally with silicon is deposited on a silicon substrate comprising a germanium buffer layer. The multilayer is completed with a silicon passivation layer. A cleave plane is formed within the multilayer, and the multilayer structure is bonded to a handle substrate comprising a dielectric layer. The multilayer structure is cleaved along the cleave plane to thereby prepare a semiconductor-on-insulator structure comprising a semiconductor handle substrate, a dielectric layer, a silicon passivation layer, and at least a portion of the alternating pairs of layers, comprising a layer of silicon and a layer of germanium option ally with silicon.
    Type: Application
    Filed: May 23, 2016
    Publication date: October 11, 2018
    Inventors: Gang Wang, Shawn George Thomas
  • Publication number: 20180282865
    Abstract: A preheat ring (126) for use in a chemical vapor deposition system includes a first portion and a second portion selectively coupled to the first portion such that the first and second portions combine to form an opening configured to receive a susceptor therein. Each of the first and second portions is independently moveable with respect to each other.
    Type: Application
    Filed: September 29, 2016
    Publication date: October 4, 2018
    Inventors: Gang Wang, Shawn George Thomas
  • Publication number: 20180274862
    Abstract: A support ring for supporting a semiconductor wafer in a boat of a vertical furnace used in processing of the semiconductor wafer includes a semicircular segment. The semicircular segment has an upper surface, a lower surface opposite the upper surface, a radial inner wall defining an inner radius, and a radial outer wall defining an outer radius. The support ring further includes protrusions in the upper surface of the semicircular segment. The protrusions extend above the upper surface.
    Type: Application
    Filed: June 1, 2018
    Publication date: September 27, 2018
    Inventors: Qingmin Liu, William Lynn Luter, Shawn George Thomas
  • Patent number: 10079170
    Abstract: A high resistivity single crystal semiconductor handle structure for use in the manufacture of SOI structure is provided. The handle structure comprises an intermediate semiconductor layer between the handle substrate and the buried oxide layer. The intermediate semiconductor layer comprises a polycrystalline, amorphous, nanocrystalline, or monocrystalline structure and comprises a material selected from the group consisting of Si1-xGex, Si1-xCx, Si1-x-yGexSny, Si1-x-y-zGexSnyCz, Ge1-xSnx, group IIIA- nitrides, semiconductor oxides, and any combination thereof.
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: September 18, 2018
    Assignee: GlobalWafers Co., Ltd.
    Inventors: Igor Peidous, Srikanth Kommu, Gang Wang, Shawn George Thomas
  • Patent number: 10072892
    Abstract: A support ring for supporting a semiconductor wafer in a boat of a vertical furnace used in processing of the semiconductor wafer includes a semicircular segment. The semicircular segment has an upper surface, a lower surface opposite the upper surface, a radial inner wall defining an inner radius, and a radial outer wall defining an outer radius. The support ring further includes protrusions in the upper surface of the semicircular segment. The protrusions extend above the upper surface.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: September 11, 2018
    Assignee: GLOBALWAFERS CO., LTD.
    Inventors: Qingmin Liu, William Lynn Luter, Shawn George Thomas
  • Publication number: 20180233400
    Abstract: A semiconductor on insulator multilayer structure is provided. The multilayer comprises a high resistivity single crystal semiconductor handle substrate, a textured oxide, nitride, or oxynitride layer, a polycrystalline silicon layer, a dielectric layer, and a single crystal semiconductor device layer. The multilayer structure is prepared in a manner that reduces wafer bow.
    Type: Application
    Filed: February 25, 2016
    Publication date: August 16, 2018
    Inventors: Gang Wang, Jeffrey L. Libbert, Shawn George Thomas, Igor Peidous
  • Publication number: 20180114720
    Abstract: A multilayer semiconductor on insulator structure is provided in which the handle substrate and an epitaxial layer in interfacial contact with the handle substrate comprise electrically active dopants of opposite type. The epitaxial layer is depleted by the handle substrate free carriers, thereby resulting in a high apparent resistivity, which improves the function of the structure in RF devices.
    Type: Application
    Filed: October 9, 2017
    Publication date: April 26, 2018
    Inventors: Gang Wang, Jeffrey L. Libbert, Shawn George Thomas, Qingmin Liu
  • Publication number: 20180005872
    Abstract: Donor structures having a germanium buffer layer for preparing silicon-germanium-on-insulator structures by layer transfer are disclosed. Bonded structures and methods for preparing silicon-germanium-on-insulator structures by a layer transfer method are also disclosed.
    Type: Application
    Filed: December 29, 2015
    Publication date: January 4, 2018
    Inventors: Shawn George Thomas, Gang Wang
  • Patent number: 9853133
    Abstract: A multilayer composite structure and a method of preparing a multilayer composite structure are provided. The multilayer composite structure comprises a semiconductor handle substrate having a minimum bulk region resistivity of at least about 500 ohm-cm; a silicon dioxide layer on the surface of the semiconductor handle substrate; a carbon-doped amorphous silicon layer in contact with the silicon dioxide layer; a dielectric layer in contact with the carbon-doped amorphous silicon layer; and a semiconductor device layer in contact with the dielectric layer.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: December 26, 2017
    Assignee: SunEdison Semiconductor Limited (UEN201334164H)
    Inventors: Shawn George Thomas, Qingmin Liu
  • Publication number: 20170316968
    Abstract: A semiconductor on insulator multilayer structure is provided. The multilayer comprises a high resistivity single crystal semiconductor handle substrate, an optionally relaxed semiconductor layer comprising silicon, germanium, or silicon germanium, an optional polycrystalline silicon layer, a dielectric layer, and a single crystal semiconductor device layer.
    Type: Application
    Filed: November 16, 2015
    Publication date: November 2, 2017
    Applicant: SunEdison Semiconductor Limited (UEN201334164H)
    Inventors: Igor Peidous, Lu Fei, Jeffrey L. Libbert, Andrew M. Jones, Alex Usenko, Gang Wang, Shawn George Thomas, Srikanth Kommu
  • Publication number: 20170115063
    Abstract: A support ring for supporting a semiconductor wafer in a boat of a vertical furnace used in processing of the semiconductor wafer includes a semicircular segment. The semicircular segment has an upper surface, a lower surface opposite the upper surface, a radial inner wall defining an inner radius, and a radial outer wall defining an outer radius. The support ring further includes protrusions in the upper surface of the semicircular segment. The protrusions extend above the upper surface.
    Type: Application
    Filed: October 14, 2016
    Publication date: April 27, 2017
    Inventors: Qingmin Liu, William Lynn Luter, Shawn George Thomas
  • Publication number: 20170025306
    Abstract: Methods for preparing silicon-on-insulator structures and related intermediate structures are disclosed. In some embodiments, a single crystal silicon seed crystal is bonded to an amorphous silicon layer disposed on a substrate and the amorphous layer is crystallized to form a monocrystalline silicon layer.
    Type: Application
    Filed: June 24, 2016
    Publication date: January 26, 2017
    Applicant: SunEdison Semiconductor Limited (UEN201334164H)
    Inventors: Gang Wang, Jeffrey L. Libbert, Qingmin Liu, Alex Usenko, Shawn George Thomas
  • Publication number: 20160351437
    Abstract: A high resistivity single crystal semiconductor handle structure for use in the manufacture of SOI structure is provided. The handle structure comprises an intermediate semiconductor layer between the handle substrate and the buried oxide layer. The intermediate semiconductor layer comprises a polycrystalline, amorphous, nanocrystalline, or monocrystalline structure and comprises a material selected from the group consisting of Si1-xGex, Si1-xCx, Si1-x-yGexSny, Si1-x-y-zGexSnyCz, Ge1-xSnx, group IIIA-nitrides, semiconductor oxides, and any combination thereof.
    Type: Application
    Filed: December 29, 2014
    Publication date: December 1, 2016
    Inventors: Igor Peidous, Srikanth Kommu, Gang Wang, Shawn George Thomas
  • Publication number: 20160289830
    Abstract: A system for depositing a layer on a substrate includes a processing chamber including a gas inlet, a plurality of gas flow controllers connected in fluid communication with a gas supply source, a gas distribution plate disposed between the plurality of gas flow controllers and the gas inlet, and a gas injection cap connected in fluid communication between the plurality of gas flow controllers and the gas distribution plate. The gas distribution plate defines a plurality of holes, and the gas injection cap defines a plurality of gas flow passages, each extending from an inlet connected to one of the gas flow controllers to an outlet connected in fluid communication with at least one of the holes in the gas distribution plate. Each of the gas flow controllers is disposed proximate to the gas injection cap.
    Type: Application
    Filed: March 29, 2016
    Publication date: October 6, 2016
    Inventors: Arash Abedijaberi, John A. Pitney, Shawn George Thomas
  • Publication number: 20160071959
    Abstract: A multilayer composite structure and a method of preparing a multilayer composite structure are provided. The multilayer composite structure comprises a semiconductor handle substrate having a minimum bulk region resistivity of at least about 500 ohm-cm; a silicon dioxide layer on the surface of the semiconductor handle substrate; a carbon-doped amorphous silicon layer in contact with the silicon dioxide layer; a dielectric layer in contact with the carbon-doped amorphous silicon layer; and a semiconductor device layer in contact with the dielectric layer.
    Type: Application
    Filed: August 25, 2015
    Publication date: March 10, 2016
    Inventors: Shawn George Thomas, Qingmin Liu
  • Publication number: 20140224174
    Abstract: A liner assembly for a substrate processing system includes a first liner and a second liner. The first liner includes an annular body and an outer peripheral surface including a first fluid guide. The first fluid guide is curved about a circumferential line extending around the first liner. The second liner includes an annular body, an outer rim, an inner rim, a second fluid guide extending between the outer rim and the inner rim, and a plurality of partition walls extending outwardly from the second fluid guide. The second fluid guide is curved about the circumferential line when the first and second liners are positioned within the processing system.
    Type: Application
    Filed: February 10, 2014
    Publication date: August 14, 2014
    Inventors: Arash Abedijaberi, Shawn George Thomas