Patents by Inventor Michael Lisiansky

Michael Lisiansky 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: 9741817
    Abstract: A method for manufacturing a metal insulator metal (MIM) trench capacitor, the method may include forming a cavity in an Intermetal Dielectric stack, wherein a bottom of the cavity exposes a lower metal layer; wherein the Intermetal Dielectric stack comprises a top dielectric layer; depositing a first metal layer on a bottom of a cavity and on sidewalls of the cavity; depositing a sacrificial layer over the first metal layer; filling the cavity with a filling material; removing, by a planarization process, a portion of the sacrificial layer positioned above the top dielectric layer and a portion of the first metal layer positioned above the top dielectric layer to expose an upper portion of the sacrificial layer and an upper portion of the first metal layer; forming a recess by removing the upper portion of the sacrificial layer and the upper portion the first metal layer while using the filling material as a mask; removing the filling material by a first removal process that is selective to the sacrificial l
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: August 22, 2017
    Assignee: TOWER SEMICONDUCTOR LTD.
    Inventors: Michael Lisiansky, Amos Fenigstein, Yakov Roizin, Hironori Matsuyoshi, Toshiaki Ohmi
  • Publication number: 20170213896
    Abstract: A method for manufacturing a metal insulator metal (MIM) trench capacitor, the method may include forming a cavity in an Intermetal Dielectric stack, wherein a bottom of the cavity exposes a lower metal layer; wherein the Intermetal Dielectric stack comprises a top dielectric layer; depositing a first metal layer on a bottom of a cavity and on sidewalls of the cavity; depositing a sacrificial layer over the first metal layer; filling the cavity with a filling material; removing, by a planarization process, a portion of the sacrificial layer positioned above the top dielectric layer and a portion of the first metal layer positioned above the top dielectric layer to expose an upper portion of the sacrificial layer and an upper portion of the first metal layer; forming a recess by removing the upper portion of the sacrificial layer and the upper portion the first metal layer while using the filling material as a mask; removing the filling material by a first removal process that is selective to the sacrificial l
    Type: Application
    Filed: January 21, 2016
    Publication date: July 27, 2017
    Inventors: Michael Lisiansky, Amos Fenigstein, Yakov Roizin, Hironori Matsuyoshi, Toshiaki Ohmi
  • Patent number: 8722484
    Abstract: A method for improving the reliability of a high-k dielectric layer or a high-k dielectric stack by forming an amorphous high-k dielectric layer over an insulating layer, doping the amorphous high-k dielectric layer with nitrogen atoms, and subsequently heating the resulting structure at a temperature greater than or equal to the crystallization temperature of the high-k dielectric material, thereby transforming the high-k dielectric material from an amorphous state to a crystalline state, and causing nitrogen atoms to diffuse into the insulating layer.
    Type: Grant
    Filed: January 14, 2008
    Date of Patent: May 13, 2014
    Assignee: Tower Semiconductor Ltd.
    Inventors: Michael Lisiansky, Yakov Roizin, Alexey Heiman, Amos Fenigstein
  • Patent number: 7754559
    Abstract: A capacitor structure is fabricated with only slight modifications to a conventional single-poly CMOS process. After front-end processing is completed, grooves are etched through the pre-metal dielectric layer to expose polysilicon structures, which may be salicided or non-salicided. A dielectric layer is formed over the exposed polysilicon structures. A conventional contact process module is then used to form contact openings through the pre-metal dielectric layer. The mask used to form the contact openings is then removed, and conventional contact metal deposition steps are performed, thereby simultaneously filling the contact openings and the grooves with the contact (electrode) metal stack. A planarization step removes the upper portion of the metal stack, thereby leaving metal contacts in the contact openings, and metal electrodes in the grooves. The metal electrodes may form, for example, transistor gates, EEPROM control gates or capacitor plates.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: July 13, 2010
    Assignee: Tower Semiconductor Ltd.
    Inventors: Efraim Aloni, Yakov Roizin, Alexey Heiman, Michael Lisiansky, Amos Fenigstein, Myriam Buchbinder
  • Publication number: 20090239351
    Abstract: A capacitor structure is fabricated with only slight modifications to a conventional single-poly CMOS process. After front-end processing is completed, grooves are etched through the pre-metal dielectric layer to expose polysilicon structures, which may be salicided or non-salicided. A dielectric layer is formed over the exposed polysilicon structures. A conventional contact process module is then used to form contact openings through the pre-metal dielectric layer. The mask used to form the contact openings is then removed, and conventional contact metal deposition steps are performed, thereby simultaneously filling the contact openings and the grooves with the contact (electrode) metal stack. A planarization step removes the upper portion of the metal stack, thereby leaving metal contacts in the contact openings, and metal electrodes in the grooves. The metal electrodes may form, for example, transistor gates, EEPROM control gates or capacitor plates.
    Type: Application
    Filed: March 19, 2008
    Publication date: September 24, 2009
    Applicant: TOWER SEMICONDUCTOR LTD.
    Inventors: Efraim Aloni, Yakov Roizin, Alexey Helman, Michael Lisiansky, Amos Fenigstein, Myriam Buchbinder
  • Publication number: 20090181530
    Abstract: A method for improving the reliability of a high-k dielectric layer or a high-k dielectric stack by forming an amorphous high-k dielectric layer over an insulating layer, doping the amorphous high-k dielectric layer with nitrogen atoms, and subsequently heating the resulting structure at a temperature greater than or equal to the crystallization temperature of the high-k dielectric material, thereby transforming the high-k dielectric material from an amorphous state to a crystalline state, and causing nitrogen atoms to diffuse into the insulating layer.
    Type: Application
    Filed: January 14, 2008
    Publication date: July 16, 2009
    Applicant: Tower Semiconductor Ltd.
    Inventors: Michael Lisiansky, Yakov Roizin, Alexey Heiman, Amos Fenigstein
  • Patent number: 5997659
    Abstract: The invention provides a method for treating devices based on semiconductor and dielectric materials for improving their electrical, photoelectric, optical, luminescent and noise characteristics, for decreasing internal residual stresses in heterostructures and for increasing the device lifetime and the stability of its parameters. The method comprises subjecting the device to acoustic vibrations in the frequency range of 0.01 to 100 MHz, at an amplitude of relative acoustic strain in the range of 0.2.multidot.10.sup.-5 to 8.multidot.10.sup.-5, for a period of at least 0.25 hour.
    Type: Grant
    Filed: August 21, 1997
    Date of Patent: December 7, 1999
    Inventors: Michael Lisiansky, Valentina Korchnoy