Patents by Inventor Loi N. Nguyen

Loi N. Nguyen 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: 8853850
    Abstract: A packaging scheme for MEMS device is provided. A method of packaging MEMS device in a semiconductor structure includes forming an insulation fence that surrounds the MEMS device on the semiconductor structure. The method further includes attaching a wafer of dielectric material to the insulation fence. The lid wafer, the insulation fence, and the semiconductor structure enclose the MEMS device.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: October 7, 2014
    Assignee: STMicroelectronics, Inc.
    Inventors: Venkatesh Mohanakrishnaswamy, Loi N. Nguyen, Venkata Ramana Yogi Mallela
  • Patent number: 8853802
    Abstract: A method that includes forming a first layer having a first dopant concentration, the first layer having an integrated circuit region and a micro-electromechanical region and doping the micro-electromechanical region of the first layer to have a second dopant concentration is presented. The method includes forming a second layer having a third dopant concentration overlying the first layer, doping the second layer that overlies the micro-electromechanical region to have a fourth dopant concentration, forming a micro-electromechanical structure in the micro-electromechanical region using the first and second layers, and forming active components in the integrated circuit region using the second layer.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: October 7, 2014
    Assignees: STMicroelectronics, Inc., STMicroelectronics Asia Pacific PTE, Ltd.
    Inventors: Venkatesh Mohanakrishnaswamy, Olivier Le Neel, Loi N. Nguyen
  • Patent number: 8680631
    Abstract: A method that includes forming an opening between at least one first electrode and a second electrode by forming a recess in a first electrode layer, the recess having sidewalls that correspond to a surface of the at least one first electrode, forming a first sacrificial layer on the sidewalls of the recess, the first sacrificial layer having a first width that corresponds to a second width of the opening, forming a second electrode layer in the recess that corresponds to the second electrode, and removing the first sacrificial layer to form the opening between the second electrode and the at least one first electrode.
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: March 25, 2014
    Assignee: STMicroelectronics, Inc.
    Inventors: Venkatesh Mohanakrishnaswamy, Loi N. Nguyen
  • Publication number: 20130228881
    Abstract: A method that includes forming an opening between at least one first electrode and a second electrode by forming a recess in a first electrode layer, the recess having sidewalls that correspond to a surface of the at least one first electrode, forming a first sacrificial layer on the sidewalls of the recess, the first sacrificial layer having a first width that corresponds to a second width of the opening, forming a second electrode layer in the recess that corresponds to the second electrode, and removing the first sacrificial layer to form the opening between the second electrode and the at least one first electrode.
    Type: Application
    Filed: April 12, 2013
    Publication date: September 5, 2013
    Applicant: STMicroelectronics, Inc.
    Inventors: Venkatesh Mohanakrishnaswamy, Loi N. Nguyen
  • Patent number: 8432006
    Abstract: A method that includes forming an opening between at least one first electrode and a second electrode by forming a recess in a first electrode layer, the recess having sidewalls that correspond to a surface of the at least one first electrode, forming a first sacrificial layer on the sidewalls of the recess, the first sacrificial layer having a first width that corresponds to a second width of the opening, forming a second electrode layer in the recess that corresponds to the second electrode, and removing the first sacrificial layer to form the opening between the second electrode and the at least one first electrode.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: April 30, 2013
    Assignee: STMicroelectronics, Inc.
    Inventors: Venkatesh Mohanakrishnaswamy, Loi N. Nguyen
  • Patent number: 8405202
    Abstract: A packaging scheme for MEMS device is provided. A method of packaging MEMS device in a semiconductor structure includes forming an insulation fence that surrounds the MEMS device on the semiconductor structure. The method further includes attaching a wafer of dielectric material to the insulation fence. The lid wafer, the insulation fence, and the semiconductor structure enclose the MEMS device.
    Type: Grant
    Filed: December 31, 2009
    Date of Patent: March 26, 2013
    Assignee: STMicroelectronics, Inc.
    Inventors: Venkatesh Mohanakrishnaswamy, Loi N. Nguyen, Venkata Ramana Yogi Mallela
  • Publication number: 20120235254
    Abstract: A method that includes forming a first layer having a first dopant concentration, the first layer having an integrated circuit region and a micro-electromechanical region and doping the micro-electromechanical region of the first layer to have a second dopant concentration is presented. The method includes forming a second layer having a third dopant concentration overlying the first layer, doping the second layer that overlies the micro-electromechanical region to have a fourth dopant concentration, forming a micro-electromechanical structure in the micro-electromechanical region using the first and second layers, and forming active components in the integrated circuit region using the second layer.
    Type: Application
    Filed: May 31, 2012
    Publication date: September 20, 2012
    Applicants: STMICROELECTRONICS ASIA PACIFIC PTE, LTD., STMICROELECTRONICS, INC.
    Inventors: Venkatesh Mohanakrishnaswamy, Olivier Le Neel, Loi N. Nguyen
  • Patent number: 8193595
    Abstract: A method that includes forming a first layer having a first dopant concentration, the first layer having an integrated circuit region and a micro-electromechanical region and doping the micro-electromechanical region of the first layer to have a second dopant concentration is presented. The method includes forming a second layer having a third dopant concentration overlying the first layer, doping the second layer that overlies the micro-electromechanical region to have a fourth dopant concentration, forming a micro-electromechanical structure in the micro-electromechanical region using the first and second layers, and forming active components in the integrated circuit region using the second layer.
    Type: Grant
    Filed: December 31, 2009
    Date of Patent: June 5, 2012
    Assignees: STMicroelectronics, Inc., STMicroelectronics Asia Pacific Pte Ltd.
    Inventors: Venkatesh Mohanakrishnaswamy, Olivier Le Neel, Loi N. Nguyen
  • Publication number: 20120056281
    Abstract: A method that includes forming an opening between at least one first electrode and a second electrode by forming a recess in a first electrode layer, the recess having sidewalls that correspond to a surface of the at least one first electrode, forming a first sacrificial layer on the sidewalls of the recess, the first sacrificial layer having a first width that corresponds to a second width of the opening, forming a second electrode layer in the recess that corresponds to the second electrode, and removing the first sacrificial layer to form the opening between the second electrode and the at least one first electrode.
    Type: Application
    Filed: August 29, 2011
    Publication date: March 8, 2012
    Applicant: STMICROELECTRONICS, INC.
    Inventors: Venkatesh Mohanakrishnaswamy, Loi N. Nguyen
  • Patent number: 8022491
    Abstract: A method that includes forming an opening between at least one first electrode and a second electrode by forming a recess in a first electrode layer, the recess having sidewalls that correspond to a surface of the at least one first electrode, forming a first sacrificial layer on the sidewalls of the recess, the first sacrificial layer having a first width that corresponds to a second width of the opening, forming a second electrode layer in the recess that corresponds to the second electrode, and removing the first sacrificial layer to form the opening between the second electrode and the at least one first electrode.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: September 20, 2011
    Assignee: STMicroelectronics, Inc.
    Inventors: Venkatesh Mohanakrishnaswamy, Loi N. Nguyen
  • Publication number: 20110156175
    Abstract: A method that includes forming a first layer having a first dopant concentration, the first layer having an integrated circuit region and a micro-electromechanical region and doping the micro-electromechanical region of the first layer to have a second dopant concentration is presented. The method includes forming a second layer having a third dopant concentration overlying the first layer, doping the second layer that overlies the micro-electromechanical region to have a fourth dopant concentration, forming a micro-electromechanical structure in the micro-electromechanical region using the first and second layers, and forming active components in the integrated circuit region using the second layer.
    Type: Application
    Filed: December 31, 2009
    Publication date: June 30, 2011
    Applicants: STMICROELECTRONICS, INC., STMICROELECTRONICS ASIA PACIFIC PTE LTD.
    Inventors: Venkatesh Mohanakrishnaswamy, Olivier Le Neel, Loi N. Nguyen
  • Publication number: 20110042801
    Abstract: A packaging scheme for MEMS device is provided. A method of packaging MEMS device in a semiconductor structure includes forming an insulation fence that surrounds the MEMS device on the semiconductor structure. The method further includes attaching a wafer of dielectric material to the insulation fence. The lid wafer, the insulation fence, and the semiconductor structure enclose the MEMS device.
    Type: Application
    Filed: December 31, 2009
    Publication date: February 24, 2011
    Applicant: STMICROELECTRONICS, INC.
    Inventors: Venkatesh Mohanakrishnaswamy, Loi N. Nguyen, Venkata Ramana Yogi Mallela
  • Publication number: 20100164024
    Abstract: A method that includes forming an opening between at least one first electrode and a second electrode by forming a recess in a first electrode layer, the recess having sidewalls that correspond to a surface of the at least one first electrode, forming a first sacrificial layer on the sidewalls of the recess, the first sacrificial layer having a first width that corresponds to a second width of the opening, forming a second electrode layer in the recess that corresponds to the second electrode, and removing the first sacrificial layer to form the opening between the second electrode and the at least one first electrode.
    Type: Application
    Filed: June 30, 2009
    Publication date: July 1, 2010
    Applicant: STMICROELECTRONICS, INC.
    Inventors: Venkatesh Mohanakrishnaswamy, Loi N. Nguyen
  • Patent number: 6472261
    Abstract: A technique for forming integrated circuit device contacts includes the formation of nitride spacers along side gate electrodes for LDD definition. In addition, a nitride cap layer is formed over the gate electrodes. When a contact opening is formed through the interlevel oxide dielectric, the nitride cap and sidewall spacers protect the gate electrode from damage and shorting. A highly doped poly plug is formed in the opening to make contact to the underlying substrate. Metalization is formed over the poly plug in the usual manner.
    Type: Grant
    Filed: March 17, 1999
    Date of Patent: October 29, 2002
    Assignee: STMicroelectronics, Inc.
    Inventor: Loi N. Nguyen
  • Publication number: 20020000627
    Abstract: A technique for forming integrated circuit device contacts includes the formation of nitride spacers along side gate electrodes for LDD definition. In addition, a nitride cap layer is formed over the gate electrodes. When a contact opening is formed through the interlevel oxide dielectric, the nitride cap and sidewall spacers protect the gate electrode from damage and shorting. A highly doped poly plug is formed in the opening to make contact to the underlying substrate. Metalization is formed over the poly plug in the usual manner.
    Type: Application
    Filed: March 17, 1999
    Publication date: January 3, 2002
    Inventor: LOI N. NGUYEN
  • Patent number: 6251713
    Abstract: An SRAM cell includes a pair of N channel transistors acting as inverting circuits, a pair of N channel transistors which perform the control function for the cell, and a pair of N channel thin film transistors in depletion mode with gate and source shorted to provide load devices for the N channel inverter transistors of the SRAM cell.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: June 26, 2001
    Assignee: STMicroelectronics, Inc.
    Inventors: Tsiu Chiu Chan, Loi N. Nguyen
  • Patent number: 6093963
    Abstract: A dual landing pad structure is formed with a dielectric pocket. A first opening is formed through a first dielectric layer to expose a portion of a diffused region. A first polysilicon landing pad is formed over the first dielectric layer and in the opening. This landing pad will provide for smaller geometries and meet stringent design rules such as that for contact space to gate. A dielectric pocket is formed over the polysilicon landing pad over the active region. A second conductive landing pad is formed over the polysilicon landing pad and the dielectric pocket. A second dielectric layer is formed over the landing pad having a second opening therethrough exposing a portion of the landing pad. A conductive contact, such as aluminum, is formed in the second contact opening. The conductive contact will electrically connect with the diffused region through the landing pad. Misalignment of the conductive contact opening over the landing pad may be tolerated without invading design rules.
    Type: Grant
    Filed: October 2, 1997
    Date of Patent: July 25, 2000
    Assignee: STMicroelectronics, Inc.
    Inventors: Tsiu C. Chan, Frank R. Bryant, Loi N. Nguyen, Artur P. Balasinski
  • Patent number: 6057604
    Abstract: A technique for forming integrated circuit device contacts includes the formation of nitride spacers along side gate electrodes for LDD definition. In addition, a nitride cap layer is formed over the gate electrodes. When a contact opening is formed through the interlevel oxide dielectric, the nitride cap and sidewall spacers protect the gate electrode from damage and shorting. A highly doped poly plug is formed in the opening to make contact to the underlying substrate. Metalization is formed over the poly plug in the usual manner.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: May 2, 2000
    Assignee: STMicroelectronics, Inc.
    Inventor: Loi N. Nguyen
  • Patent number: 5956615
    Abstract: A method is provided for forming an improved landing pad of a semiconductor integrated circuit, and an integrated circuit formed according to the same. A first opening is formed through a first dielectric layer to expose a portion of a diffused region. A landing pad is formed over the first dielectric layer and in the opening. The landing pad preferably comprises a doped polysilicon layer disposed in the first opening and over a portion of the first dielectric layer. The landing pad will provide for smaller geometries and meet stringent design rules such as that for contact space to gate. A second dielectric layer having an opening therethrough is formed over the landing pad having an opening therethrough exposing a portion of the landing pad. A conductive contact, such as aluminum, is formed in the contact opening. The conductive contact will electrically connect with the diffused region through the landing pad.
    Type: Grant
    Filed: December 22, 1994
    Date of Patent: September 21, 1999
    Assignee: STMicroelectronics, Inc.
    Inventors: Loi N. Nguyen, Frank R. Bryant
  • Patent number: RE36938
    Abstract: A method is provided for forming an improved landing pad of a semiconductor integrated circuit, and an integrated circuit formed according to the same. A first opening is formed through a first dielectric layer to expose a portion of a diffused region. A first polysilicon landing pad is formed over the first dielectric layer and in the opening. This landing pad will provide for smaller geometries and meet stringent design rules such as that for contact space to gate. A dielectric pocket is formed over the polysilicon landing pad over the active region. A second conductive landing pad is formed over the polysilicon landing pad and the dielectric pocket. A second dielectric layer is formed over the landing pad having a second opening therethrough exposing a portion of the landing pad. A conductive contact, such as aluminum, is formed in the second contact opening. The conductive contact will electrically connect with the diffused region through the landing pad.
    Type: Grant
    Filed: August 17, 1998
    Date of Patent: October 31, 2000
    Assignee: STMicroelectronics, Inc.
    Inventors: Tsiu C. Chan, Frank R. Bryant, Loi N. Nguyen