Patents by Inventor Reinaldo A. Vega

Reinaldo A. Vega 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: 20220181439
    Abstract: Techniques are provided to fabricate semiconductor devices having a nanosheet field-effect transistor device disposed on a semiconductor substrate. The nanosheet field-effect transistor device includes a nanosheet stack structure including a semiconductor channel layer and a source/drain region in contact with an end portion of the semiconductor channel layer of the nanosheet stack structure. A trench formed in the source/drain region is filled with a metal-based material. The metal-based material filling the trench in the source/drain region mitigates the effect of source/drain material overfill on the contact resistance of the semiconductor device.
    Type: Application
    Filed: February 22, 2022
    Publication date: June 9, 2022
    Inventors: Heng Wu, Dechao Guo, Ruqiang Bao, Junli Wang, Lan Yu, Reinaldo Vega, Adra Carr
  • Publication number: 20220181252
    Abstract: An approach to forming a semiconductor device where the semiconductor device includes a first power rail with one or more vertically stacked contact vias connecting to the first power rail to a portion of a first de-coupling capacitor. The semiconductor device includes the first de-coupling capacitor in a first portion of a semiconductor substrate in a first gate cut trench.
    Type: Application
    Filed: December 3, 2020
    Publication date: June 9, 2022
    Inventors: Reinaldo Vega, David Wolpert, Takashi Ando, Praneet Adusumilli, Cheng Chi
  • Publication number: 20220173312
    Abstract: A mushroom-type Phase-Change Memory (PCM) device includes a substrate, a lower interconnect disposed in the substrate, a first dielectric layer disposed on the substrate, a bottom electrode disposed in the first dielectric layer and extending above an upper surface of the first dielectric layer, a type drift-mitigation liner encircling an upper portion of the bottom electrode extending above the upper surface of the first dielectric layer, a PCM element disposed on the liner and an upper surface of the bottom electrode, a top electrode disposed on the PCM element, and a second dielectric layer disposed on an exposed portion of the first dielectric layer and the top electrode, wherein the second dielectric layer is disposed on sidewalls of the liner, the PCM element, and the top electrode.
    Type: Application
    Filed: November 30, 2020
    Publication date: June 2, 2022
    Inventors: Praneet Adusumilli, Anirban Chandra, Takashi Ando, Cheng Chi, Reinaldo Vega
  • Patent number: 11342446
    Abstract: A method of forming a nanosheet device, including forming a channel stack on a substrate, where the channel stack includes at least one nanosheet channel layer and at least one sacrificial release layer, forming a stack cover layer on at least a portion of the channel stack, forming a dummy gate on at least a portion of the stack cover layer, wherein at least a portion of the at least one nanosheet channel layer and at least one sacrificial release layer is exposed on opposite sides of the dummy gate, removing at least a portion of the at least one sacrificial release layer on each side of the dummy gate to form a sacrificial supporting rib, and forming an inner spacer layer on exposed portions of the at least one nanosheet channel layer and at least one sacrificial supporting rib.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: May 24, 2022
    Assignee: Tessera, Inc.
    Inventors: Michael A. Guillorn, Terence B. Hook, Robert R. Robison, Reinaldo A. Vega, Rajasekhar Venigalla
  • Publication number: 20220158092
    Abstract: A resistive random access memory (ReRAM) device is provided. The ReRAM device includes a stack structure including a first electrode, a metal oxide layer in contact with the first electrode, and a second electrode in contact with the metal oxide layer. A portion of the stack structure is modified by ion implantation, and the modified portion of the stack structure is offset from edges of the stack structure.
    Type: Application
    Filed: November 19, 2020
    Publication date: May 19, 2022
    Inventors: Praneet Adusumilli, Takashi Ando, REINALDO VEGA, Cheng Chi
  • Publication number: 20220158091
    Abstract: A resistive random access memory (ReRAM) device is provided. The ReRAM device includes a first electrode, a first resistive structure in contact with the first electrode, a dielectric layer in contact with the first resistive structure, and a second resistive structure in contact with the dielectric layer. The second resistive structure includes a resistive material layer and a high work function metal core. The ReRAM device also includes a second electrode in contact with the second resistive structure.
    Type: Application
    Filed: November 19, 2020
    Publication date: May 19, 2022
    Inventors: Takashi Ando, Praneet Adusumilli, REINALDO VEGA, Cheng Chi
  • Patent number: 11335730
    Abstract: A vertical resistive switching memory device is provided that includes a resistive random access memory (ReRAM) stack embedded in a material stack of alternating layers of an interlayer dielectric material and a recessed electrode material. A selector device encapsulates a portion of the ReRAM stack and is present in an undercut region that is laterally adjacent to each of the recessed electrode material layers of the material stack.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: May 17, 2022
    Assignee: International Business Machines Corporation
    Inventors: Takashi Ando, Praneet Adusumilli, Reinaldo Vega, Cheng Chi
  • Patent number: 11289573
    Abstract: Techniques are provided to fabricate semiconductor devices having a nanosheet field-effect transistor device disposed on a semiconductor substrate. The nanosheet field-effect transistor device includes a nanosheet stack structure including a semiconductor channel layer and a source/drain region in contact with an end portion of the semiconductor channel layer of the nanosheet stack structure. A trench formed in the source/drain region is filled with a metal-based material. The metal-based material filling the trench in the source/drain region mitigates the effect of source/drain material overfill on the contact resistance of the semiconductor device.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: March 29, 2022
    Assignee: International Business Machines Corporation
    Inventors: Heng Wu, Dechao Guo, Ruqiang Bao, Junli Wang, Lan Yu, Reinaldo Vega, Adra Carr
  • Patent number: 11244864
    Abstract: A method for fabricating a semiconductor device includes forming a shared source/drain connection at a first planar level to connect a first source/drain contact structure disposed on a first source/drain region to a second source/drain contact structure disposed on a second source/drain region, and forming a shared gate connection to connect a first gate structure to a second gate structure. The shared gate connection is formed at a second planar level different from the first planar level to reduce parasitic capacitance between the shared source/drain connection and the shared gate connection.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: February 8, 2022
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Ruilong Xie, Reinaldo Vega, Alexander Reznicek, Kangguo Cheng
  • Patent number: 11245020
    Abstract: One example of an apparatus includes a conducting channel region. The conducting channel region includes a plurality of epitaxially grown, in situ doped conducting channels arranged in a spaced apart relation relative to each other. A source positioned at a first end of the conducting channel region, and a drain positioned at a second end of the conducting channel region. A gate surrounds all sides of the conducting channel region and fills in spaces between the plurality of epitaxially grown, in situ doped conducting channels.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: February 8, 2022
    Assignee: International Business Machines Corporation
    Inventors: Ruqiang Bao, Michael A. Guillorn, Terence Hook, Robert R. Robison, Reinaldo Vega, Tenko Yamashita
  • Publication number: 20220006009
    Abstract: A method is presented for enabling heat dissipation in resistive random access memory (RRAM) devices. The method includes forming a first thermal conducting layer over a bottom electrode, depositing a metal oxide liner over the first thermal conducting layer, forming a second thermal conducting layer over the metal oxide liner, recessing the second thermal conducting layer to expose the first thermal conducting layer, and forming a top electrode in direct contact with the first and second thermal conducting layers.
    Type: Application
    Filed: September 21, 2021
    Publication date: January 6, 2022
    Inventors: Takashi Ando, Praneet Adusumilli, Jianshi Tang, Reinaldo Vega
  • Publication number: 20210408233
    Abstract: Embodiments of the invention are directed to a method of performing fabrication operations to form a transistor, wherein the fabrication operations include forming a source or drain (S/D) region having stacked, spaced-apart, and doped S/D layers. The fabrication operations further include forming a multi-region S/D contact structure configured to contact a top surface, a bottom surface, and sidewalls of each of the stacked, spaced-apart, and doped S/D layers.
    Type: Application
    Filed: June 30, 2020
    Publication date: December 30, 2021
    Inventors: Ruilong Xie, Reinaldo Vega, Kangguo Cheng, Chanro Park, Juntao Li
  • Patent number: 11211429
    Abstract: Vertically stacked memory devices and methods of manufacture are provided. The structures include a substrate stack including a first row of horizontal electrodes disposed over a first insulating layer and first insulating layer disposed over a substrate. The substrate stack further includes a second row of horizontal electrodes separated from the first row of horizontal electrodes by a second insulating layer, and the first row of horizontal electrodes is form over and substantially parallel to the second row of horizontal electrodes. A third insulating layer is formed over the second row of horizontal electrodes. A plurality of vertical gate trenches formed through the third insulating layer, the second row of horizontal electrodes, the second insulating layer, the first row of horizontal electrodes and the first insulating layer. The plurality of vertical gate trenches filled with a layer of channel material, a layer of electrolyte material and filled with a metal.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: December 28, 2021
    Assignee: International Business Machines Corporation
    Inventors: Jianshi Tang, Takashi Ando, Reinaldo Vega
  • Patent number: 11211452
    Abstract: Embodiments of the invention are directed to a method of performing fabrication operations to form a transistor, wherein the fabrication operations include forming a source or drain (S/D) region having stacked, spaced-apart, and doped S/D layers. The fabrication operations further include forming a multi-region S/D contact structure configured to contact a top surface, a bottom surface, and sidewalls of each of the stacked, spaced-apart, and doped S/D layers.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: December 28, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Ruilong Xie, Reinaldo Vega, Kangguo Cheng, Chanro Park, Juntao Li
  • Patent number: 11189786
    Abstract: Tapered resistive memory devices with interface dipoles are provided. In one aspect, a ReRAM device includes: a bottom electrode; a core dielectric that is thermally conductive disposed on the bottom electrode; an oxide resistive memory cell disposed along outer sidewalls of the core dielectric, wherein the oxide resistive memory cell has inner edges adjacent to the core dielectric, and outer edges that are tapered; an outer coating disposed adjacent to the outer edges of the oxide resistive memory cell; and a top electrode disposed on the core dielectric, the oxide resistive memory cell, and the outer coating. A method of forming a ReRAM device as well as a method of operating a ReRAM device are also provided.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: November 30, 2021
    Assignee: International Business Machines Corporation
    Inventors: Reinaldo Vega, Takashi Ando, Jianshi Tang, Praneet Adusumilli
  • Patent number: 11177436
    Abstract: A method is presented for enabling heat dissipation in resistive random access memory (RRAM) devices. The method includes forming a first thermal conducting layer over a bottom electrode, depositing a metal oxide liner over the first thermal conducting layer, forming a second thermal conducting layer over the metal oxide liner, recessing the second thermal conducting layer to expose the first thermal conducting layer, and forming a top electrode in direct contact with the first and second thermal conducting layers.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: November 16, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Takashi Ando, Praneet Adusumilli, Jianshi Tang, Reinaldo Vega
  • Patent number: 11164908
    Abstract: A semiconductor device with an array of vertically stacked electrochemical random-access memory (ECRAM) devices, includes holes formed in a vertical stack of horizontal electrodes. The horizontal electrodes are horizontally aligned and stacked vertically at different vertical levels within the vertical stack and separated by first fill layers. The semiconductor device includes a stack deposition, including a channel layer, and an electrolyte layer, formed over the vertical stack and holes. Selector layers fill holes. The selector layers include an inner selector layer and outer selector layers. The channel layer, the electrolyte layer and outer selector layers are recessed to the inner selector layer and a fill layer is deposited over the vertical stack. The fill layer has been reduced down to the top of the inner selector layer.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: November 2, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Jianshi Tang, Takashi Ando, Reinaldo Vega, Praneet Adusumilli
  • Publication number: 20210327762
    Abstract: A method for fabricating a semiconductor device includes forming a shared source/drain connection at a first planar level to connect a first source/drain contact structure disposed on a first source/drain region to a second source/drain contact structure disposed on a second source/drain region, and forming a shared gate connection to connect a first gate structure to a second gate structure. The shared gate connection is formed at a second planar level different from the first planar level to reduce parasitic capacitance between the shared source/drain connection and the shared gate connection.
    Type: Application
    Filed: April 21, 2020
    Publication date: October 21, 2021
    Inventors: Ruilong Xie, Reinaldo Vega, Alexander Reznicek, Kangguo Cheng
  • Patent number: 11145811
    Abstract: Resistive memory with core and shell oxides and interface dipoles for controlled filament formation is provided. In one aspect, a ReRAM device includes at least one ReRAM cell having a substrate; a bottom electrode disposed on the substrate; spacers formed from a low group electron negativity material disposed on the bottom electrode; a core formed from a high group electron negativity material present between the spacers; and a top electrode over and in contact with the spacers and the core, wherein a combination of the low group electron negativity material for the spacers and the high group electron negativity material for the core generates an interface dipole pointing toward the core. Methods of forming and operating a ReRAM device are also provided.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: October 12, 2021
    Assignee: International Business Machines Corporation
    Inventors: Takashi Ando, Jianshi Tang, Praneet Adusumilli, Reinaldo Vega
  • Patent number: 11137418
    Abstract: A test probe assembly for use in testing a semiconductor wafer includes a probe card, a plurality of test probes mounted to the probe card and one or more piezoelectric elements mounted to each test probe. The piezoelectric elements are configured to move respective probe ends of the individual test probes in at least one direction to facilitate realignment of the probe ends for semiconductor wafer testing.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: October 5, 2021
    Assignee: International Business Machines Corporation
    Inventors: Kushagra Sinha, Pablo Nieves, Reinaldo Vega