Patents by Inventor Julien Frougier

Julien Frougier 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: 20230040768
    Abstract: A spin-orbit torque magnetoresistive random-access memory device formed by fabricating a plurality of stacks of vertical magnetoresistive random-access memory (MRAM) cell stacks, each stack formed upon a different bottom electrode, each stack including: a first vertical MRAM cell stack, the first vertical MRAM cell stack disposed upon a first bottom electrode, a first metal layer disposed above and in electrical contact with the first MRAM cell stack, and a second vertical MRAM cell stack, the second MRAM cell stack disposed above and in electrical contact with the first metal layer. Further by fabricating a low resistivity layer between adjacent stacks of vertical MRAM cell stacks, the low resistivity layer in electrical contact with the spin-Hall-Effect layer of each of the adjacent stacks.
    Type: Application
    Filed: August 4, 2021
    Publication date: February 9, 2023
    Inventors: Julien Frougier, Kangguo Cheng, Dimitri Houssameddine, Ruilong Xie
  • Publication number: 20230038957
    Abstract: A complementary metal-oxide semiconductor device formed by fabricating CMOS nanosheet stacks, forming a dielectric pillar dividing the CMOS nanosheet stacks, forming CMOS FET pairs on either side of the dielectric pillar, and forming a gate contact for at least one of the FETs.
    Type: Application
    Filed: August 5, 2021
    Publication date: February 9, 2023
    Inventors: Ruilong Xie, Julien Frougier, Heng WU, Chen Zhang, Kangguo Cheng
  • Publication number: 20230040712
    Abstract: A complementary field effect transistor (CFET) structure including a first transistor disposed above a second transistor, a first source/drain region of the first transistor disposed above a second source/drain region of the second transistor, wherein the first source/drain region comprises a smaller cross-section than the second source/drain region, a first dielectric material disposed in contact with a bottom surface and vertical surfaces of the first source/drain region and further in contact with a vertical surface and top surface of the second source/drain region, and a second dielectric material disposed as an interlayer dielectric material encapsulating the first and second transistors.
    Type: Application
    Filed: August 3, 2021
    Publication date: February 9, 2023
    Inventors: Ruilong Xie, Kangguo Cheng, Julien Frougier, CHANRO PARK
  • Publication number: 20230031574
    Abstract: A uniform moon-shaped bottom spacer for a VTFET device is provided utilizing a replacement bottom spacer that is epitaxially grown above a bottom source/drain region. After filling a trench that is formed into a substrate with a dielectric fill material that also covers the replacement bottom spacer, the replacement bottom spacer is accessed, removed and then replaced with a moon-shaped bottom spacer.
    Type: Application
    Filed: July 29, 2021
    Publication date: February 2, 2023
    Inventors: Ruilong XIE, Chen ZHANG, Julien FROUGIER, Alexander REZNICEK, Shogo MOCHIZUKI
  • Publication number: 20230031589
    Abstract: An embedded eMRAM device for eFlash replacement including an MTJ pillar located between a top electrode and a bottom electrode for forming an MRAM array. The bottom electrode is disposed above a substrate and surrounded by a first dielectric spacer, while the top electrode is disposed above the MTJ pillar and surrounded by a second dielectric spacer. A bottom metal plate is disposed on opposing sides of the bottom electrode between first and second dielectric layers and is electrically separated from the bottom electrode by the first dielectric spacer. A top metal plate is disposed on opposing sides of the top electrode between third and fourth dielectric layers and is electrically separated from the top electrode by the second dielectric spacer. A bias voltage applied to the top metal plate and the bottom metal plate generates an external electric field on the MTJ pillar for creating a VCMA effect.
    Type: Application
    Filed: July 30, 2021
    Publication date: February 2, 2023
    Inventors: Heng Wu, Ruilong Xie, Julien Frougier, Bruce B. Doris
  • Publication number: 20230032984
    Abstract: A magnetic shielding structure for protecting an MRAM array from adverse switching effects due to external magnetic fields of neighboring devices is provided. The magnetic shielding structure includes a bottom magnetic shield material-containing layer and a top magnetic shield material-containing layer within the MRAM array. The bottom and top magnetic shield material-containing layers can be connected by a vertical magnetic shield containing-material layer that is located near each end of the bottom and top magnetic shield material-containing layers. The bottom magnetic shield material-containing layer is located beneath a MTJ pillar of each MRAM device, but above, bottom electrically conductive structures that are in electrical contact with the MRAM devices. The top magnetic shield material-containing layer is located above the MRAM devices, and is located laterally adjacent to, but not above or below, top electrically conductive structures that are also in electrical contact with the MRAM devices.
    Type: Application
    Filed: August 2, 2021
    Publication date: February 2, 2023
    Inventors: Julien Frougier, Dimitri Houssameddine, Kangguo Cheng, Ruilong Xie
  • Patent number: 11569361
    Abstract: An embodiment includes a method of forming a semiconductor device and the resulting device. The method may include forming a source/drain on an exposed portion of a semiconductor layer of a layered nanosheet. The method may include forming a sacrificial material on the source/drain. The method may include forming a dielectric layer covering the sacrificial material. The method may include replacing the sacrificial material with a contact liner. The semiconductor device may include a first gate nanosheet stack and second gate nanosheet stack. The semiconductor device may include a first source/drain in contact with the first nanosheet stack and a second source/drain in contact with the second nanosheet stack. The semiconductor device may include a source/drain dielectric located between the first source/drain and the second source/drain. The semiconductor device may include a contact liner in contact with the first source/drain, the second source/drain and the source/drain dielectric.
    Type: Grant
    Filed: December 31, 2020
    Date of Patent: January 31, 2023
    Assignee: International Business Machines Corporation
    Inventors: Julien Frougier, Ruilong Xie, Kangguo Cheng, Chanro Park
  • Publication number: 20230029232
    Abstract: A field effect transistor (FET) structure upon a substrate formed by forming a stack of nanosheets upon a semiconductor substrate, the stack including alternating layers of a compound semiconductor material and an elemental semiconductor material, forming a dummy gate structure upon the stack of nanosheets, recessing the stack of nanosheets in alignment with the dummy gate structure, recessing the compound semiconductor layers beyond the edges of the dummy gate, yielding indentations between adjacent semiconductor nanosheets. Further by filling the indentations with a bi-layer dielectric material, epitaxially growing source/drain regions adjacent to the nanosheet stack and bi-layer dielectric material, removing remaining portions of the compound semiconductor nanosheet layers, recessing the bi-layer dielectric material to expose an inner material layer, and forming gate structure layers in contact with first and second dielectric materials of the bi-layer dielectric material.
    Type: Application
    Filed: July 21, 2021
    Publication date: January 26, 2023
    Inventors: Kangguo Cheng, Ruilong Xie, Julien Frougier, Juntao Li
  • Publication number: 20230027293
    Abstract: Provided is a semiconductor structure with shared gated devices. The semiconductor structure comprises a substrate and a bottom dielectric isolation (BDI) layer on top of the substrate. The structure further comprises a pFET region that includes a p-doped Source-Drain epitaxy material and a first nanowire matrix above the BDI layer. The structure further comprises an nFET region that includes a n-doped Source-Drain epitaxy material and a second nanowire matrix above the BDI layer. The structure further comprises a conductive gate material on top of a portion of the first nanowire matrix and the second nanowire matrix. The structure further comprises a vertical dielectric pillar separating the pFET region and the nFET region. The vertical dielectric pillar extends downward through the BDI layer into the substrate. The vertical dielectric pillar further extends upward through the conductive gate material to a dielectric located above the gate region.
    Type: Application
    Filed: July 23, 2021
    Publication date: January 26, 2023
    Inventors: Julien Frougier, Ruilong Xie, Kangguo Cheng, CHANRO PARK
  • Publication number: 20230018698
    Abstract: A cross-couple contact structure is provided that is located on, and physically contacts, a topmost surface of a functional gate structure that is located laterally adjacent to a gate cut region. The cross-couple contact structure extends into the laterally adjacent gate cut region and physically contacts a sidewall of the functional gate structure, an upper portion of a first sidewall of a dielectric plug that is present in the gate cut region, and an upper surface of a dielectric liner that is located on a lower portion of the first sidewall of the dielectric plug.
    Type: Application
    Filed: July 14, 2021
    Publication date: January 19, 2023
    Inventors: Ruilong Xie, Kangguo Cheng, CHANRO PARK, Julien Frougier
  • Publication number: 20230008763
    Abstract: A multiple gate dielectrics and dual work-functions field effect transistor (MGO-DWF-FET) is provided on an active region of a semiconductor substrate. The MGO-DWF-FET includes a first functional gate structure including a U-shaped first high-k gate dielectric material layer and a first work-function metal-containing structure, and a laterally adjacent, and contacting, second functional gate structure that includes a U-shaped second high-k gate dielectric material layer and a second work-function metal-containing structure. The first functional gate structure has a gate length that differs from a gate length of the second functional gate structure.
    Type: Application
    Filed: July 9, 2021
    Publication date: January 12, 2023
    Inventors: Kangguo Cheng, Ruilong Xie, Julien Frougier, CHANRO PARK
  • Publication number: 20220406664
    Abstract: A semiconductor structure may include a first nanosheet field-effect transistor formed on a first portion of a substrate, a second nanosheet field-effect transistor formed on a second portion of the substrate, and one or more metal contacts. The first field-effect transistor formed on the first portion of a substrate may include a first source drain epitaxy. A top surface of the first source drain epitaxy may be above a top surface of a top-most nanosheet channel layer. The second nanosheet field-effect transistor formed on the second portion of the substrate may include a second source drain epitaxy and a third source drain epitaxy. The second source drain epitaxy may be below the third source drain epitaxy. The third source drain epitaxy may be u-shaped and may be connected to at least one nanosheet channel layer.
    Type: Application
    Filed: June 17, 2021
    Publication date: December 22, 2022
    Inventors: Ruilong Xie, Julien Frougier, CHANRO PARK, Kangguo Cheng
  • Publication number: 20220406776
    Abstract: A semiconductor device comprising at least one first gate all around channel having a horizontal physical orientation, wherein the at least one first gate all around channel is comprised of a first material, wherein the at least one first gate all around channel has a sidewall surface with (100) crystal orientation. At least one second gate all around channel having a vertical physical orientation, wherein the second channel is located above the at least one first gate all around channel, wherein the at least one second gate all around channel is comprised of a second material, wherein the at least one second gate all around channel has a sidewall surface with (110) crystal orientation. A gate metal enclosing the at least one first gate all around channel and the at least one second gate all around channel.
    Type: Application
    Filed: June 21, 2021
    Publication date: December 22, 2022
    Inventors: Ruilong Xie, Eric Miller, Dechao Guo, Jeffrey C. Shearer, Su Chen Fan, Julien Frougier, Veeraraghavan S. Basker, Junli Wang, Sung Dae Suk
  • Publication number: 20220398068
    Abstract: According to one embodiment, a method, computer system, and computer program product for generating true random numbers is provided. The present invention may include applying an electrical current to an entirely on-chip magnetic tunnel junction (MTJ) to cause the MTJ to oscillate between a high resistance state and a low resistance state; responsive to removing the electrical current and allowing the MTJ to randomly relax into the high resistance state or the low resistance state, reading the resistance state of the MTJ.
    Type: Application
    Filed: June 9, 2021
    Publication date: December 15, 2022
    Inventors: Dimitri Houssameddine, Kangguo Cheng, Julien Frougier, Ruilong Xie
  • Publication number: 20220399450
    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: Application
    Filed: June 15, 2021
    Publication date: December 15, 2022
    Inventors: Ruilong Xie, Kangguo Cheng, Julien Frougier, CHANRO PARK, Veeraraghavan S. Basker
  • Patent number: 11527535
    Abstract: An embodiment of the invention may include a forkFET semiconductor structure, and the method of forming said structure. The structure may include a first FET device and a second FET device separated by a vertical dielectric pillar. The first FET device may include a first plurality of horizontal sheet channels. The second FET device may include a second plurality of horizontal sheet channels. The first plurality of horizontal sheet channels contains more horizontal sheets than the second plurality of horizontal sheet channels. This may enable adjustment of Weff for different devices on different sides of the pillar or different thicknesses of dielectrics used for the device.
    Type: Grant
    Filed: January 21, 2021
    Date of Patent: December 13, 2022
    Assignee: International Business Machines Corporation
    Inventors: Julien Frougier, Ruilong Xie, Kangguo Cheng, Chanro Park
  • Patent number: 11527446
    Abstract: Embodiments of the invention are directed to a fabrication method that includes forming a first-region channel over a first region of a substrate, wherein the first-region channel further includes lateral sidewalls having a length (L), a first end sidewall having a first width (W1), and a second end sidewall having a second width (W2). L is greater than W1, and L is greater than W2. A first stress anchor is formed on the first end sidewall of the first-region channel, and a second stress anchor is formed on the second end sidewall of the first-region channel. The first stress anchor is configured to impart strain through the first end sidewalls to the first-region channel. The second stress anchor is configured to impart strain through the second end sidewalls to the first-region channel.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: December 13, 2022
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kangguo Cheng, Juntao Li, Julien Frougier, Ruilong Xie
  • Patent number: 11521894
    Abstract: Contact designs for semiconductor FET devices are provided. In one aspect, a contact structure includes: a metal line(s); a first ILD surrounding the metal line(s), wherein a top surface of the first ILD is recessed below a top surface of the metal line(s); a liner disposed on the first ILD and on portions of the metal line(s); a top contact(s) disposed over, and in direct contact with, the metal line(s), wherein an upper portion of the top contact(s) has a width W1 and a height H1, wherein a lower portion of the top contact(s) has a width W2 and a height H2, and wherein W1<W2 and H1>H2; and a second ILD disposed over the liner and surrounding the top contact(s). A semiconductor FET device and methods for fabrication thereof are also provided.
    Type: Grant
    Filed: July 18, 2020
    Date of Patent: December 6, 2022
    Assignee: International Business Machines Corporation
    Inventors: Ruilong Xie, Julien Frougier, Ekmini Anuja De Silva, Eric Miller
  • Publication number: 20220383922
    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: Application
    Filed: May 27, 2021
    Publication date: December 1, 2022
    Inventors: Julien Frougier, Dimitri Houssameddine, Ruilong Xie, Kangguo Cheng
  • Publication number: 20220384568
    Abstract: An apparatus comprising a substrate, a first nanosheet device located on the substrate, and a second nanosheet device located on the substrate, wherein the second nanosheet device is adjacent to the first nanosheet device. At least one first gate located on the first nanosheet device, wherein the at least one first gate has a first width. At least one second gate located on the second nanosheet device, wherein the at least one second gate has a second width, wherein the first width and the second width are substantially the same. A diffusion break located between the first nanosheet device and the second nanosheet device, wherein the diffusion break prevents the first nanosheet device from contacting the second nanosheet device, wherein the diffusion break has a third width, wherein the third width is larger than the first width and the second width.
    Type: Application
    Filed: May 26, 2021
    Publication date: December 1, 2022
    Inventors: Eric Miller, Indira Seshadri, Andrew M. Greene, Julien Frougier, Veeraraghavan S. Basker